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编辑当前文件:/home/qrafawbu/abrokyireboyz.com/assets/app.js

/******/ (() => { // webpackBootstrap
/******/ 	var __webpack_modules__ = ({

/***/ "./node_modules/gsap/CSSPlugin.js":
/*!****************************************!*\
  !*** ./node_modules/gsap/CSSPlugin.js ***!
  \****************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "CSSPlugin": () => (/* binding */ CSSPlugin),
/* harmony export */   "_createElement": () => (/* binding */ _createElement),
/* harmony export */   "_getBBox": () => (/* binding */ _getBBox),
/* harmony export */   "checkPrefix": () => (/* binding */ _checkPropPrefix),
/* harmony export */   "default": () => (/* binding */ CSSPlugin)
/* harmony export */ });
/* harmony import */ var _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gsap-core.js */ "./node_modules/gsap/gsap-core.js");
/*!
 * CSSPlugin 3.11.4
 * https://greensock.com
 *
 * Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */

var _win,
    _doc,
    _docElement,
    _pluginInitted,
    _tempDiv,
    _tempDivStyler,
    _recentSetterPlugin,
    _reverting,
    _windowExists = function _windowExists() {
  return typeof window !== "undefined";
},
    _transformProps = {},
    _RAD2DEG = 180 / Math.PI,
    _DEG2RAD = Math.PI / 180,
    _atan2 = Math.atan2,
    _bigNum = 1e8,
    _capsExp = /([A-Z])/g,
    _horizontalExp = /(left|right|width|margin|padding|x)/i,
    _complexExp = /[\s,\(]\S/,
    _propertyAliases = {
  autoAlpha: "opacity,visibility",
  scale: "scaleX,scaleY",
  alpha: "opacity"
},
    _renderCSSProp = function _renderCSSProp(ratio, data) {
  return data.set(data.t, data.p, Math.round((data.s + data.c * ratio) * 10000) / 10000 + data.u, data);
},
    _renderPropWithEnd = function _renderPropWithEnd(ratio, data) {
  return data.set(data.t, data.p, ratio === 1 ? data.e : Math.round((data.s + data.c * ratio) * 10000) / 10000 + data.u, data);
},
    _renderCSSPropWithBeginning = function _renderCSSPropWithBeginning(ratio, data) {
  return data.set(data.t, data.p, ratio ? Math.round((data.s + data.c * ratio) * 10000) / 10000 + data.u : data.b, data);
},
    //if units change, we need a way to render the original unit/value when the tween goes all the way back to the beginning (ratio:0)
_renderRoundedCSSProp = function _renderRoundedCSSProp(ratio, data) {
  var value = data.s + data.c * ratio;
  data.set(data.t, data.p, ~~(value + (value < 0 ? -.5 : .5)) + data.u, data);
},
    _renderNonTweeningValue = function _renderNonTweeningValue(ratio, data) {
  return data.set(data.t, data.p, ratio ? data.e : data.b, data);
},
    _renderNonTweeningValueOnlyAtEnd = function _renderNonTweeningValueOnlyAtEnd(ratio, data) {
  return data.set(data.t, data.p, ratio !== 1 ? data.b : data.e, data);
},
    _setterCSSStyle = function _setterCSSStyle(target, property, value) {
  return target.style[property] = value;
},
    _setterCSSProp = function _setterCSSProp(target, property, value) {
  return target.style.setProperty(property, value);
},
    _setterTransform = function _setterTransform(target, property, value) {
  return target._gsap[property] = value;
},
    _setterScale = function _setterScale(target, property, value) {
  return target._gsap.scaleX = target._gsap.scaleY = value;
},
    _setterScaleWithRender = function _setterScaleWithRender(target, property, value, data, ratio) {
  var cache = target._gsap;
  cache.scaleX = cache.scaleY = value;
  cache.renderTransform(ratio, cache);
},
    _setterTransformWithRender = function _setterTransformWithRender(target, property, value, data, ratio) {
  var cache = target._gsap;
  cache[property] = value;
  cache.renderTransform(ratio, cache);
},
    _transformProp = "transform",
    _transformOriginProp = _transformProp + "Origin",
    _saveStyle = function _saveStyle(property, isNotCSS) {
  var _this = this;

var target = this.target,
      style = target.style;

if (property in _transformProps) {
    this.tfm = this.tfm || {};

if (property !== "transform") {
      property = _propertyAliases[property] || property;
      ~property.indexOf(",") ? property.split(",").forEach(function (a) {
        return _this.tfm[a] = _get(target, a);
      }) : this.tfm[property] = target._gsap.x ? target._gsap[property] : _get(target, property); // note: scale would map to "scaleX,scaleY", thus we loop and apply them both.
    }

if (this.props.indexOf(_transformProp) >= 0) {
      return;
    }

if (target._gsap.svg) {
      this.svgo = target.getAttribute("data-svg-origin");
      this.props.push(_transformOriginProp, isNotCSS, "");
    }

property = _transformProp;
  }

(style || isNotCSS) && this.props.push(property, isNotCSS, style[property]);
},
    _removeIndependentTransforms = function _removeIndependentTransforms(style) {
  if (style.translate) {
    style.removeProperty("translate");
    style.removeProperty("scale");
    style.removeProperty("rotate");
  }
},
    _revertStyle = function _revertStyle() {
  var props = this.props,
      target = this.target,
      style = target.style,
      cache = target._gsap,
      i,
      p;

for (i = 0; i < props.length; i += 3) {
    // stored like this: property, isNotCSS, value
    props[i + 1] ? target[props[i]] = props[i + 2] : props[i + 2] ? style[props[i]] = props[i + 2] : style.removeProperty(props[i].replace(_capsExp, "-$1").toLowerCase());
  }

if (this.tfm) {
    for (p in this.tfm) {
      cache[p] = this.tfm[p];
    }

if (cache.svg) {
      cache.renderTransform();
      target.setAttribute("data-svg-origin", this.svgo || "");
    }

i = _reverting();

if (i && !i.isStart && !style[_transformProp]) {
      _removeIndependentTransforms(style);

cache.uncache = 1; // if it's a startAt that's being reverted in the _initTween() of the core, we don't need to uncache transforms. This is purely a performance optimization.
    }
  }
},
    _getStyleSaver = function _getStyleSaver(target, properties) {
  var saver = {
    target: target,
    props: [],
    revert: _revertStyle,
    save: _saveStyle
  };
  properties && properties.split(",").forEach(function (p) {
    return saver.save(p);
  });
  return saver;
},
    _supports3D,
    _createElement = function _createElement(type, ns) {
  var e = _doc.createElementNS ? _doc.createElementNS((ns || "http://www.w3.org/1999/xhtml").replace(/^https/, "http"), type) : _doc.createElement(type); //some servers swap in https for http in the namespace which can break things, making "style" inaccessible.

return e.style ? e : _doc.createElement(type); //some environments won't allow access to the element's style when created with a namespace in which case we default to the standard createElement() to work around the issue. Also note that when GSAP is embedded directly inside an SVG file, createElement() won't allow access to the style object in Firefox (see https://greensock.com/forums/topic/20215-problem-using-tweenmax-in-standalone-self-containing-svg-file-err-cannot-set-property-csstext-of-undefined/).
},
    _getComputedProperty = function _getComputedProperty(target, property, skipPrefixFallback) {
  var cs = getComputedStyle(target);
  return cs[property] || cs.getPropertyValue(property.replace(_capsExp, "-$1").toLowerCase()) || cs.getPropertyValue(property) || !skipPrefixFallback && _getComputedProperty(target, _checkPropPrefix(property) || property, 1) || ""; //css variables may not need caps swapped out for dashes and lowercase.
},
    _prefixes = "O,Moz,ms,Ms,Webkit".split(","),
    _checkPropPrefix = function _checkPropPrefix(property, element, preferPrefix) {
  var e = element || _tempDiv,
      s = e.style,
      i = 5;

if (property in s && !preferPrefix) {
    return property;
  }

property = property.charAt(0).toUpperCase() + property.substr(1);

while (i-- && !(_prefixes[i] + property in s)) {}

return i < 0 ? null : (i === 3 ? "ms" : i >= 0 ? _prefixes[i] : "") + property;
},
    _initCore = function _initCore() {
  if (_windowExists() && window.document) {
    _win = window;
    _doc = _win.document;
    _docElement = _doc.documentElement;
    _tempDiv = _createElement("div") || {
      style: {}
    };
    _tempDivStyler = _createElement("div");
    _transformProp = _checkPropPrefix(_transformProp);
    _transformOriginProp = _transformProp + "Origin";
    _tempDiv.style.cssText = "border-width:0;line-height:0;position:absolute;padding:0"; //make sure to override certain properties that may contaminate measurements, in case the user has overreaching style sheets.

_supports3D = !!_checkPropPrefix("perspective");
    _reverting = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap.core.reverting;
    _pluginInitted = 1;
  }
},
    _getBBoxHack = function _getBBoxHack(swapIfPossible) {
  //works around issues in some browsers (like Firefox) that don't correctly report getBBox() on SVG elements inside a <defs> element and/or <mask>. We try creating an SVG, adding it to the documentElement and toss the element in there so that it's definitely part of the rendering tree, then grab the bbox and if it works, we actually swap out the original getBBox() method for our own that does these extra steps whenever getBBox is needed. This helps ensure that performance is optimal (only do all these extra steps when absolutely necessary...most elements don't need it).
  var svg = _createElement("svg", this.ownerSVGElement && this.ownerSVGElement.getAttribute("xmlns") || "http://www.w3.org/2000/svg"),
      oldParent = this.parentNode,
      oldSibling = this.nextSibling,
      oldCSS = this.style.cssText,
      bbox;

_docElement.appendChild(svg);

svg.appendChild(this);
  this.style.display = "block";

if (swapIfPossible) {
    try {
      bbox = this.getBBox();
      this._gsapBBox = this.getBBox; //store the original

this.getBBox = _getBBoxHack;
    } catch (e) {}
  } else if (this._gsapBBox) {
    bbox = this._gsapBBox();
  }

if (oldParent) {
    if (oldSibling) {
      oldParent.insertBefore(this, oldSibling);
    } else {
      oldParent.appendChild(this);
    }
  }

_docElement.removeChild(svg);

this.style.cssText = oldCSS;
  return bbox;
},
    _getAttributeFallbacks = function _getAttributeFallbacks(target, attributesArray) {
  var i = attributesArray.length;

while (i--) {
    if (target.hasAttribute(attributesArray[i])) {
      return target.getAttribute(attributesArray[i]);
    }
  }
},
    _getBBox = function _getBBox(target) {
  var bounds;

try {
    bounds = target.getBBox(); //Firefox throws errors if you try calling getBBox() on an SVG element that's not rendered (like in a <symbol> or <defs>). https://bugzilla.mozilla.org/show_bug.cgi?id=612118
  } catch (error) {
    bounds = _getBBoxHack.call(target, true);
  }

bounds && (bounds.width || bounds.height) || target.getBBox === _getBBoxHack || (bounds = _getBBoxHack.call(target, true)); //some browsers (like Firefox) misreport the bounds if the element has zero width and height (it just assumes it's at x:0, y:0), thus we need to manually grab the position in that case.

return bounds && !bounds.width && !bounds.x && !bounds.y ? {
    x: +_getAttributeFallbacks(target, ["x", "cx", "x1"]) || 0,
    y: +_getAttributeFallbacks(target, ["y", "cy", "y1"]) || 0,
    width: 0,
    height: 0
  } : bounds;
},
    _isSVG = function _isSVG(e) {
  return !!(e.getCTM && (!e.parentNode || e.ownerSVGElement) && _getBBox(e));
},
    //reports if the element is an SVG on which getBBox() actually works
_removeProperty = function _removeProperty(target, property) {
  if (property) {
    var style = target.style;

if (property in _transformProps && property !== _transformOriginProp) {
      property = _transformProp;
    }

if (style.removeProperty) {
      if (property.substr(0, 2) === "ms" || property.substr(0, 6) === "webkit") {
        //Microsoft and some Webkit browsers don't conform to the standard of capitalizing the first prefix character, so we adjust so that when we prefix the caps with a dash, it's correct (otherwise it'd be "ms-transform" instead of "-ms-transform" for IE9, for example)
        property = "-" + property;
      }

style.removeProperty(property.replace(_capsExp, "-$1").toLowerCase());
    } else {
      //note: old versions of IE use "removeAttribute()" instead of "removeProperty()"
      style.removeAttribute(property);
    }
  }
},
    _addNonTweeningPT = function _addNonTweeningPT(plugin, target, property, beginning, end, onlySetAtEnd) {
  var pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(plugin._pt, target, property, 0, 1, onlySetAtEnd ? _renderNonTweeningValueOnlyAtEnd : _renderNonTweeningValue);
  plugin._pt = pt;
  pt.b = beginning;
  pt.e = end;

plugin._props.push(property);

return pt;
},
    _nonConvertibleUnits = {
  deg: 1,
  rad: 1,
  turn: 1
},
    _nonStandardLayouts = {
  grid: 1,
  flex: 1
},
    //takes a single value like 20px and converts it to the unit specified, like "%", returning only the numeric amount.
_convertToUnit = function _convertToUnit(target, property, value, unit) {
  var curValue = parseFloat(value) || 0,
      curUnit = (value + "").trim().substr((curValue + "").length) || "px",
      // some browsers leave extra whitespace at the beginning of CSS variables, hence the need to trim()
  style = _tempDiv.style,
      horizontal = _horizontalExp.test(property),
      isRootSVG = target.tagName.toLowerCase() === "svg",
      measureProperty = (isRootSVG ? "client" : "offset") + (horizontal ? "Width" : "Height"),
      amount = 100,
      toPixels = unit === "px",
      toPercent = unit === "%",
      px,
      parent,
      cache,
      isSVG;

if (unit === curUnit || !curValue || _nonConvertibleUnits[unit] || _nonConvertibleUnits[curUnit]) {
    return curValue;
  }

curUnit !== "px" && !toPixels && (curValue = _convertToUnit(target, property, value, "px"));
  isSVG = target.getCTM && _isSVG(target);

if ((toPercent || curUnit === "%") && (_transformProps[property] || ~property.indexOf("adius"))) {
    px = isSVG ? target.getBBox()[horizontal ? "width" : "height"] : target[measureProperty];
    return (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(toPercent ? curValue / px * amount : curValue / 100 * px);
  }

style[horizontal ? "width" : "height"] = amount + (toPixels ? curUnit : unit);
  parent = ~property.indexOf("adius") || unit === "em" && target.appendChild && !isRootSVG ? target : target.parentNode;

if (isSVG) {
    parent = (target.ownerSVGElement || {}).parentNode;
  }

if (!parent || parent === _doc || !parent.appendChild) {
    parent = _doc.body;
  }

cache = parent._gsap;

if (cache && toPercent && cache.width && horizontal && cache.time === _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._ticker.time && !cache.uncache) {
    return (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(curValue / cache.width * amount);
  } else {
    (toPercent || curUnit === "%") && !_nonStandardLayouts[_getComputedProperty(parent, "display")] && (style.position = _getComputedProperty(target, "position"));
    parent === target && (style.position = "static"); // like for borderRadius, if it's a % we must have it relative to the target itself but that may not have position: relative or position: absolute in which case it'd go up the chain until it finds its offsetParent (bad). position: static protects against that.

parent.appendChild(_tempDiv);
    px = _tempDiv[measureProperty];
    parent.removeChild(_tempDiv);
    style.position = "absolute";

if (horizontal && toPercent) {
      cache = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._getCache)(parent);
      cache.time = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._ticker.time;
      cache.width = parent[measureProperty];
    }
  }

return (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(toPixels ? px * curValue / amount : px && curValue ? amount / px * curValue : 0);
},
    _get = function _get(target, property, unit, uncache) {
  var value;
  _pluginInitted || _initCore();

if (property in _propertyAliases && property !== "transform") {
    property = _propertyAliases[property];

if (~property.indexOf(",")) {
      property = property.split(",")[0];
    }
  }

if (_transformProps[property] && property !== "transform") {
    value = _parseTransform(target, uncache);
    value = property !== "transformOrigin" ? value[property] : value.svg ? value.origin : _firstTwoOnly(_getComputedProperty(target, _transformOriginProp)) + " " + value.zOrigin + "px";
  } else {
    value = target.style[property];

if (!value || value === "auto" || uncache || ~(value + "").indexOf("calc(")) {
      value = _specialProps[property] && _specialProps[property](target, property, unit) || _getComputedProperty(target, property) || (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._getProperty)(target, property) || (property === "opacity" ? 1 : 0); // note: some browsers, like Firefox, don't report borderRadius correctly! Instead, it only reports every corner like  borderTopLeftRadius
    }
  }

return unit && !~(value + "").trim().indexOf(" ") ? _convertToUnit(target, property, value, unit) + unit : value;
},
    _tweenComplexCSSString = function _tweenComplexCSSString(target, prop, start, end) {
  // note: we call _tweenComplexCSSString.call(pluginInstance...) to ensure that it's scoped properly. We may call it from within a plugin too, thus "this" would refer to the plugin.
  if (!start || start === "none") {
    // some browsers like Safari actually PREFER the prefixed property and mis-report the unprefixed value like clipPath (BUG). In other words, even though clipPath exists in the style ("clipPath" in target.style) and it's set in the CSS properly (along with -webkit-clip-path), Safari reports clipPath as "none" whereas WebkitClipPath reports accurately like "ellipse(100% 0% at 50% 0%)", so in this case we must SWITCH to using the prefixed property instead. See https://greensock.com/forums/topic/18310-clippath-doesnt-work-on-ios/
    var p = _checkPropPrefix(prop, target, 1),
        s = p && _getComputedProperty(target, p, 1);

if (s && s !== start) {
      prop = p;
      start = s;
    } else if (prop === "borderColor") {
      start = _getComputedProperty(target, "borderTopColor"); // Firefox bug: always reports "borderColor" as "", so we must fall back to borderTopColor. See https://greensock.com/forums/topic/24583-how-to-return-colors-that-i-had-after-reverse/
    }
  }

var pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(this._pt, target.style, prop, 0, 1, _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._renderComplexString),
      index = 0,
      matchIndex = 0,
      a,
      result,
      startValues,
      startNum,
      color,
      startValue,
      endValue,
      endNum,
      chunk,
      endUnit,
      startUnit,
      endValues;
  pt.b = start;
  pt.e = end;
  start += ""; // ensure values are strings

end += "";

if (end === "auto") {
    target.style[prop] = end;
    end = _getComputedProperty(target, prop) || end;
    target.style[prop] = start;
  }

a = [start, end];

(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._colorStringFilter)(a); // pass an array with the starting and ending values and let the filter do whatever it needs to the values. If colors are found, it returns true and then we must match where the color shows up order-wise because for things like boxShadow, sometimes the browser provides the computed values with the color FIRST, but the user provides it with the color LAST, so flip them if necessary. Same for drop-shadow().

start = a[0];
  end = a[1];
  startValues = start.match(_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._numWithUnitExp) || [];
  endValues = end.match(_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._numWithUnitExp) || [];

if (endValues.length) {
    while (result = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._numWithUnitExp.exec(end)) {
      endValue = result[0];
      chunk = end.substring(index, result.index);

if (color) {
        color = (color + 1) % 5;
      } else if (chunk.substr(-5) === "rgba(" || chunk.substr(-5) === "hsla(") {
        color = 1;
      }

if (endValue !== (startValue = startValues[matchIndex++] || "")) {
        startNum = parseFloat(startValue) || 0;
        startUnit = startValue.substr((startNum + "").length);
        endValue.charAt(1) === "=" && (endValue = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._parseRelative)(startNum, endValue) + startUnit);
        endNum = parseFloat(endValue);
        endUnit = endValue.substr((endNum + "").length);
        index = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._numWithUnitExp.lastIndex - endUnit.length;

if (!endUnit) {
          //if something like "perspective:300" is passed in and we must add a unit to the end
          endUnit = endUnit || _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units[prop] || startUnit;

if (index === end.length) {
            end += endUnit;
            pt.e += endUnit;
          }
        }

if (startUnit !== endUnit) {
          startNum = _convertToUnit(target, prop, startValue, endUnit) || 0;
        } // these nested PropTweens are handled in a special way - we'll never actually call a render or setter method on them. We'll just loop through them in the parent complex string PropTween's render method.

pt._pt = {
          _next: pt._pt,
          p: chunk || matchIndex === 1 ? chunk : ",",
          //note: SVG spec allows omission of comma/space when a negative sign is wedged between two numbers, like 2.5-5.3 instead of 2.5,-5.3 but when tweening, the negative value may switch to positive, so we insert the comma just in case.
          s: startNum,
          c: endNum - startNum,
          m: color && color < 4 || prop === "zIndex" ? Math.round : 0
        };
      }
    }

pt.c = index < end.length ? end.substring(index, end.length) : ""; //we use the "c" of the PropTween to store the final part of the string (after the last number)
  } else {
    pt.r = prop === "display" && end === "none" ? _renderNonTweeningValueOnlyAtEnd : _renderNonTweeningValue;
  }

_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._relExp.test(end) && (pt.e = 0); //if the end string contains relative values or dynamic random(...) values, delete the end it so that on the final render we don't actually set it to the string with += or -= characters (forces it to use the calculated value).

this._pt = pt; //start the linked list with this new PropTween. Remember, we call _tweenComplexCSSString.call(pluginInstance...) to ensure that it's scoped properly. We may call it from within another plugin too, thus "this" would refer to the plugin.

return pt;
},
    _keywordToPercent = {
  top: "0%",
  bottom: "100%",
  left: "0%",
  right: "100%",
  center: "50%"
},
    _convertKeywordsToPercentages = function _convertKeywordsToPercentages(value) {
  var split = value.split(" "),
      x = split[0],
      y = split[1] || "50%";

if (x === "top" || x === "bottom" || y === "left" || y === "right") {
    //the user provided them in the wrong order, so flip them
    value = x;
    x = y;
    y = value;
  }

split[0] = _keywordToPercent[x] || x;
  split[1] = _keywordToPercent[y] || y;
  return split.join(" ");
},
    _renderClearProps = function _renderClearProps(ratio, data) {
  if (data.tween && data.tween._time === data.tween._dur) {
    var target = data.t,
        style = target.style,
        props = data.u,
        cache = target._gsap,
        prop,
        clearTransforms,
        i;

if (props === "all" || props === true) {
      style.cssText = "";
      clearTransforms = 1;
    } else {
      props = props.split(",");
      i = props.length;

while (--i > -1) {
        prop = props[i];

if (_transformProps[prop]) {
          clearTransforms = 1;
          prop = prop === "transformOrigin" ? _transformOriginProp : _transformProp;
        }

_removeProperty(target, prop);
      }
    }

if (clearTransforms) {
      _removeProperty(target, _transformProp);

if (cache) {
        cache.svg && target.removeAttribute("transform");

_parseTransform(target, 1); // force all the cached values back to "normal"/identity, otherwise if there's another tween that's already set to render transforms on this element, it could display the wrong values.

cache.uncache = 1;

_removeIndependentTransforms(style);
      }
    }
  }
},
    // note: specialProps should return 1 if (and only if) they have a non-zero priority. It indicates we need to sort the linked list.
_specialProps = {
  clearProps: function clearProps(plugin, target, property, endValue, tween) {
    if (tween.data !== "isFromStart") {
      var pt = plugin._pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(plugin._pt, target, property, 0, 0, _renderClearProps);
      pt.u = endValue;
      pt.pr = -10;
      pt.tween = tween;

plugin._props.push(property);

return 1;
    }
  }
  /* className feature (about 0.4kb gzipped).
  , className(plugin, target, property, endValue, tween) {
  	let _renderClassName = (ratio, data) => {
  			data.css.render(ratio, data.css);
  			if (!ratio || ratio === 1) {
  				let inline = data.rmv,
  					target = data.t,
  					p;
  				target.setAttribute("class", ratio ? data.e : data.b);
  				for (p in inline) {
  					_removeProperty(target, p);
  				}
  			}
  		},
  		_getAllStyles = (target) => {
  			let styles = {},
  				computed = getComputedStyle(target),
  				p;
  			for (p in computed) {
  				if (isNaN(p) && p !== "cssText" && p !== "length") {
  					styles[p] = computed[p];
  				}
  			}
  			_setDefaults(styles, _parseTransform(target, 1));
  			return styles;
  		},
  		startClassList = target.getAttribute("class"),
  		style = target.style,
  		cssText = style.cssText,
  		cache = target._gsap,
  		classPT = cache.classPT,
  		inlineToRemoveAtEnd = {},
  		data = {t:target, plugin:plugin, rmv:inlineToRemoveAtEnd, b:startClassList, e:(endValue.charAt(1) !== "=") ? endValue : startClassList.replace(new RegExp("(?:\\s|^)" + endValue.substr(2) + "(?![\\w-])"), "") + ((endValue.charAt(0) === "+") ? " " + endValue.substr(2) : "")},
  		changingVars = {},
  		startVars = _getAllStyles(target),
  		transformRelated = /(transform|perspective)/i,
  		endVars, p;
  	if (classPT) {
  		classPT.r(1, classPT.d);
  		_removeLinkedListItem(classPT.d.plugin, classPT, "_pt");
  	}
  	target.setAttribute("class", data.e);
  	endVars = _getAllStyles(target, true);
  	target.setAttribute("class", startClassList);
  	for (p in endVars) {
  		if (endVars[p] !== startVars[p] && !transformRelated.test(p)) {
  			changingVars[p] = endVars[p];
  			if (!style[p] && style[p] !== "0") {
  				inlineToRemoveAtEnd[p] = 1;
  			}
  		}
  	}
  	cache.classPT = plugin._pt = new PropTween(plugin._pt, target, "className", 0, 0, _renderClassName, data, 0, -11);
  	if (style.cssText !== cssText) { //only apply if things change. Otherwise, in cases like a background-image that's pulled dynamically, it could cause a refresh. See https://greensock.com/forums/topic/20368-possible-gsap-bug-switching-classnames-in-chrome/.
  		style.cssText = cssText; //we recorded cssText before we swapped classes and ran _getAllStyles() because in cases when a className tween is overwritten, we remove all the related tweening properties from that class change (otherwise class-specific stuff can't override properties we've directly set on the target's style object due to specificity).
  	}
  	_parseTransform(target, true); //to clear the caching of transforms
  	data.css = new gsap.plugins.css();
  	data.css.init(target, changingVars, tween);
  	plugin._props.push(...data.css._props);
  	return 1;
  }
  */

/*
 * --------------------------------------------------------------------------------------
 * TRANSFORMS
 * --------------------------------------------------------------------------------------
 */
_identity2DMatrix = [1, 0, 0, 1, 0, 0],
    _rotationalProperties = {},
    _isNullTransform = function _isNullTransform(value) {
  return value === "matrix(1, 0, 0, 1, 0, 0)" || value === "none" || !value;
},
    _getComputedTransformMatrixAsArray = function _getComputedTransformMatrixAsArray(target) {
  var matrixString = _getComputedProperty(target, _transformProp);

return _isNullTransform(matrixString) ? _identity2DMatrix : matrixString.substr(7).match(_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._numExp).map(_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round);
},
    _getMatrix = function _getMatrix(target, force2D) {
  var cache = target._gsap || (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._getCache)(target),
      style = target.style,
      matrix = _getComputedTransformMatrixAsArray(target),
      parent,
      nextSibling,
      temp,
      addedToDOM;

if (cache.svg && target.getAttribute("transform")) {
    temp = target.transform.baseVal.consolidate().matrix; //ensures that even complex values like "translate(50,60) rotate(135,0,0)" are parsed because it mashes it into a matrix.

matrix = [temp.a, temp.b, temp.c, temp.d, temp.e, temp.f];
    return matrix.join(",") === "1,0,0,1,0,0" ? _identity2DMatrix : matrix;
  } else if (matrix === _identity2DMatrix && !target.offsetParent && target !== _docElement && !cache.svg) {
    //note: if offsetParent is null, that means the element isn't in the normal document flow, like if it has display:none or one of its ancestors has display:none). Firefox returns null for getComputedStyle() if the element is in an iframe that has display:none. https://bugzilla.mozilla.org/show_bug.cgi?id=548397
    //browsers don't report transforms accurately unless the element is in the DOM and has a display value that's not "none". Firefox and Microsoft browsers have a partial bug where they'll report transforms even if display:none BUT not any percentage-based values like translate(-50%, 8px) will be reported as if it's translate(0, 8px).
    temp = style.display;
    style.display = "block";
    parent = target.parentNode;

if (!parent || !target.offsetParent) {
      // note: in 3.3.0 we switched target.offsetParent to _doc.body.contains(target) to avoid [sometimes unnecessary] MutationObserver calls but that wasn't adequate because there are edge cases where nested position: fixed elements need to get reparented to accurately sense transforms. See https://github.com/greensock/GSAP/issues/388 and https://github.com/greensock/GSAP/issues/375
      addedToDOM = 1; //flag

nextSibling = target.nextElementSibling;

_docElement.appendChild(target); //we must add it to the DOM in order to get values properly

}

matrix = _getComputedTransformMatrixAsArray(target);
    temp ? style.display = temp : _removeProperty(target, "display");

if (addedToDOM) {
      nextSibling ? parent.insertBefore(target, nextSibling) : parent ? parent.appendChild(target) : _docElement.removeChild(target);
    }
  }

return force2D && matrix.length > 6 ? [matrix[0], matrix[1], matrix[4], matrix[5], matrix[12], matrix[13]] : matrix;
},
    _applySVGOrigin = function _applySVGOrigin(target, origin, originIsAbsolute, smooth, matrixArray, pluginToAddPropTweensTo) {
  var cache = target._gsap,
      matrix = matrixArray || _getMatrix(target, true),
      xOriginOld = cache.xOrigin || 0,
      yOriginOld = cache.yOrigin || 0,
      xOffsetOld = cache.xOffset || 0,
      yOffsetOld = cache.yOffset || 0,
      a = matrix[0],
      b = matrix[1],
      c = matrix[2],
      d = matrix[3],
      tx = matrix[4],
      ty = matrix[5],
      originSplit = origin.split(" "),
      xOrigin = parseFloat(originSplit[0]) || 0,
      yOrigin = parseFloat(originSplit[1]) || 0,
      bounds,
      determinant,
      x,
      y;

if (!originIsAbsolute) {
    bounds = _getBBox(target);
    xOrigin = bounds.x + (~originSplit[0].indexOf("%") ? xOrigin / 100 * bounds.width : xOrigin);
    yOrigin = bounds.y + (~(originSplit[1] || originSplit[0]).indexOf("%") ? yOrigin / 100 * bounds.height : yOrigin);
  } else if (matrix !== _identity2DMatrix && (determinant = a * d - b * c)) {
    //if it's zero (like if scaleX and scaleY are zero), skip it to avoid errors with dividing by zero.
    x = xOrigin * (d / determinant) + yOrigin * (-c / determinant) + (c * ty - d * tx) / determinant;
    y = xOrigin * (-b / determinant) + yOrigin * (a / determinant) - (a * ty - b * tx) / determinant;
    xOrigin = x;
    yOrigin = y;
  }

if (smooth || smooth !== false && cache.smooth) {
    tx = xOrigin - xOriginOld;
    ty = yOrigin - yOriginOld;
    cache.xOffset = xOffsetOld + (tx * a + ty * c) - tx;
    cache.yOffset = yOffsetOld + (tx * b + ty * d) - ty;
  } else {
    cache.xOffset = cache.yOffset = 0;
  }

cache.xOrigin = xOrigin;
  cache.yOrigin = yOrigin;
  cache.smooth = !!smooth;
  cache.origin = origin;
  cache.originIsAbsolute = !!originIsAbsolute;
  target.style[_transformOriginProp] = "0px 0px"; //otherwise, if someone sets  an origin via CSS, it will likely interfere with the SVG transform attribute ones (because remember, we're baking the origin into the matrix() value).

if (pluginToAddPropTweensTo) {
    _addNonTweeningPT(pluginToAddPropTweensTo, cache, "xOrigin", xOriginOld, xOrigin);

_addNonTweeningPT(pluginToAddPropTweensTo, cache, "yOrigin", yOriginOld, yOrigin);

_addNonTweeningPT(pluginToAddPropTweensTo, cache, "xOffset", xOffsetOld, cache.xOffset);

_addNonTweeningPT(pluginToAddPropTweensTo, cache, "yOffset", yOffsetOld, cache.yOffset);
  }

target.setAttribute("data-svg-origin", xOrigin + " " + yOrigin);
},
    _parseTransform = function _parseTransform(target, uncache) {
  var cache = target._gsap || new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.GSCache(target);

if ("x" in cache && !uncache && !cache.uncache) {
    return cache;
  }

var style = target.style,
      invertedScaleX = cache.scaleX < 0,
      px = "px",
      deg = "deg",
      cs = getComputedStyle(target),
      origin = _getComputedProperty(target, _transformOriginProp) || "0",
      x,
      y,
      z,
      scaleX,
      scaleY,
      rotation,
      rotationX,
      rotationY,
      skewX,
      skewY,
      perspective,
      xOrigin,
      yOrigin,
      matrix,
      angle,
      cos,
      sin,
      a,
      b,
      c,
      d,
      a12,
      a22,
      t1,
      t2,
      t3,
      a13,
      a23,
      a33,
      a42,
      a43,
      a32;
  x = y = z = rotation = rotationX = rotationY = skewX = skewY = perspective = 0;
  scaleX = scaleY = 1;
  cache.svg = !!(target.getCTM && _isSVG(target));

if (cs.translate) {
    // accommodate independent transforms by combining them into normal ones.
    if (cs.translate !== "none" || cs.scale !== "none" || cs.rotate !== "none") {
      style[_transformProp] = (cs.translate !== "none" ? "translate3d(" + (cs.translate + " 0 0").split(" ").slice(0, 3).join(", ") + ") " : "") + (cs.rotate !== "none" ? "rotate(" + cs.rotate + ") " : "") + (cs.scale !== "none" ? "scale(" + cs.scale.split(" ").join(",") + ") " : "") + (cs[_transformProp] !== "none" ? cs[_transformProp] : "");
    }

style.scale = style.rotate = style.translate = "none";
  }

matrix = _getMatrix(target, cache.svg);

if (cache.svg) {
    if (cache.uncache) {
      // if cache.uncache is true (and maybe if origin is 0,0), we need to set element.style.transformOrigin = (cache.xOrigin - bbox.x) + "px " + (cache.yOrigin - bbox.y) + "px". Previously we let the data-svg-origin stay instead, but when introducing revert(), it complicated things.
      t2 = target.getBBox();
      origin = cache.xOrigin - t2.x + "px " + (cache.yOrigin - t2.y) + "px";
      t1 = "";
    } else {
      t1 = !uncache && target.getAttribute("data-svg-origin"); //  Remember, to work around browser inconsistencies we always force SVG elements' transformOrigin to 0,0 and offset the translation accordingly.
    }

_applySVGOrigin(target, t1 || origin, !!t1 || cache.originIsAbsolute, cache.smooth !== false, matrix);
  }

xOrigin = cache.xOrigin || 0;
  yOrigin = cache.yOrigin || 0;

if (matrix !== _identity2DMatrix) {
    a = matrix[0]; //a11

b = matrix[1]; //a21

c = matrix[2]; //a31

d = matrix[3]; //a41

x = a12 = matrix[4];
    y = a22 = matrix[5]; //2D matrix

if (matrix.length === 6) {
      scaleX = Math.sqrt(a * a + b * b);
      scaleY = Math.sqrt(d * d + c * c);
      rotation = a || b ? _atan2(b, a) * _RAD2DEG : 0; //note: if scaleX is 0, we cannot accurately measure rotation. Same for skewX with a scaleY of 0. Therefore, we default to the previously recorded value (or zero if that doesn't exist).

skewX = c || d ? _atan2(c, d) * _RAD2DEG + rotation : 0;
      skewX && (scaleY *= Math.abs(Math.cos(skewX * _DEG2RAD)));

if (cache.svg) {
        x -= xOrigin - (xOrigin * a + yOrigin * c);
        y -= yOrigin - (xOrigin * b + yOrigin * d);
      } //3D matrix

} else {
      a32 = matrix[6];
      a42 = matrix[7];
      a13 = matrix[8];
      a23 = matrix[9];
      a33 = matrix[10];
      a43 = matrix[11];
      x = matrix[12];
      y = matrix[13];
      z = matrix[14];
      angle = _atan2(a32, a33);
      rotationX = angle * _RAD2DEG; //rotationX

if (angle) {
        cos = Math.cos(-angle);
        sin = Math.sin(-angle);
        t1 = a12 * cos + a13 * sin;
        t2 = a22 * cos + a23 * sin;
        t3 = a32 * cos + a33 * sin;
        a13 = a12 * -sin + a13 * cos;
        a23 = a22 * -sin + a23 * cos;
        a33 = a32 * -sin + a33 * cos;
        a43 = a42 * -sin + a43 * cos;
        a12 = t1;
        a22 = t2;
        a32 = t3;
      } //rotationY

angle = _atan2(-c, a33);
      rotationY = angle * _RAD2DEG;

if (angle) {
        cos = Math.cos(-angle);
        sin = Math.sin(-angle);
        t1 = a * cos - a13 * sin;
        t2 = b * cos - a23 * sin;
        t3 = c * cos - a33 * sin;
        a43 = d * sin + a43 * cos;
        a = t1;
        b = t2;
        c = t3;
      } //rotationZ

angle = _atan2(b, a);
      rotation = angle * _RAD2DEG;

if (angle) {
        cos = Math.cos(angle);
        sin = Math.sin(angle);
        t1 = a * cos + b * sin;
        t2 = a12 * cos + a22 * sin;
        b = b * cos - a * sin;
        a22 = a22 * cos - a12 * sin;
        a = t1;
        a12 = t2;
      }

if (rotationX && Math.abs(rotationX) + Math.abs(rotation) > 359.9) {
        //when rotationY is set, it will often be parsed as 180 degrees different than it should be, and rotationX and rotation both being 180 (it looks the same), so we adjust for that here.
        rotationX = rotation = 0;
        rotationY = 180 - rotationY;
      }

scaleX = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(Math.sqrt(a * a + b * b + c * c));
      scaleY = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(Math.sqrt(a22 * a22 + a32 * a32));
      angle = _atan2(a12, a22);
      skewX = Math.abs(angle) > 0.0002 ? angle * _RAD2DEG : 0;
      perspective = a43 ? 1 / (a43 < 0 ? -a43 : a43) : 0;
    }

if (cache.svg) {
      //sense if there are CSS transforms applied on an SVG element in which case we must overwrite them when rendering. The transform attribute is more reliable cross-browser, but we can't just remove the CSS ones because they may be applied in a CSS rule somewhere (not just inline).
      t1 = target.getAttribute("transform");
      cache.forceCSS = target.setAttribute("transform", "") || !_isNullTransform(_getComputedProperty(target, _transformProp));
      t1 && target.setAttribute("transform", t1);
    }
  }

if (Math.abs(skewX) > 90 && Math.abs(skewX) < 270) {
    if (invertedScaleX) {
      scaleX *= -1;
      skewX += rotation <= 0 ? 180 : -180;
      rotation += rotation <= 0 ? 180 : -180;
    } else {
      scaleY *= -1;
      skewX += skewX <= 0 ? 180 : -180;
    }
  }

uncache = uncache || cache.uncache;
  cache.x = x - ((cache.xPercent = x && (!uncache && cache.xPercent || (Math.round(target.offsetWidth / 2) === Math.round(-x) ? -50 : 0))) ? target.offsetWidth * cache.xPercent / 100 : 0) + px;
  cache.y = y - ((cache.yPercent = y && (!uncache && cache.yPercent || (Math.round(target.offsetHeight / 2) === Math.round(-y) ? -50 : 0))) ? target.offsetHeight * cache.yPercent / 100 : 0) + px;
  cache.z = z + px;
  cache.scaleX = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(scaleX);
  cache.scaleY = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(scaleY);
  cache.rotation = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(rotation) + deg;
  cache.rotationX = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(rotationX) + deg;
  cache.rotationY = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(rotationY) + deg;
  cache.skewX = skewX + deg;
  cache.skewY = skewY + deg;
  cache.transformPerspective = perspective + px;

if (cache.zOrigin = parseFloat(origin.split(" ")[2]) || 0) {
    style[_transformOriginProp] = _firstTwoOnly(origin);
  }

cache.xOffset = cache.yOffset = 0;
  cache.force3D = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.force3D;
  cache.renderTransform = cache.svg ? _renderSVGTransforms : _supports3D ? _renderCSSTransforms : _renderNon3DTransforms;
  cache.uncache = 0;
  return cache;
},
    _firstTwoOnly = function _firstTwoOnly(value) {
  return (value = value.split(" "))[0] + " " + value[1];
},
    //for handling transformOrigin values, stripping out the 3rd dimension
_addPxTranslate = function _addPxTranslate(target, start, value) {
  var unit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(start);
  return (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(parseFloat(start) + parseFloat(_convertToUnit(target, "x", value + "px", unit))) + unit;
},
    _renderNon3DTransforms = function _renderNon3DTransforms(ratio, cache) {
  cache.z = "0px";
  cache.rotationY = cache.rotationX = "0deg";
  cache.force3D = 0;

_renderCSSTransforms(ratio, cache);
},
    _zeroDeg = "0deg",
    _zeroPx = "0px",
    _endParenthesis = ") ",
    _renderCSSTransforms = function _renderCSSTransforms(ratio, cache) {
  var _ref = cache || this,
      xPercent = _ref.xPercent,
      yPercent = _ref.yPercent,
      x = _ref.x,
      y = _ref.y,
      z = _ref.z,
      rotation = _ref.rotation,
      rotationY = _ref.rotationY,
      rotationX = _ref.rotationX,
      skewX = _ref.skewX,
      skewY = _ref.skewY,
      scaleX = _ref.scaleX,
      scaleY = _ref.scaleY,
      transformPerspective = _ref.transformPerspective,
      force3D = _ref.force3D,
      target = _ref.target,
      zOrigin = _ref.zOrigin,
      transforms = "",
      use3D = force3D === "auto" && ratio && ratio !== 1 || force3D === true; // Safari has a bug that causes it not to render 3D transform-origin values properly, so we force the z origin to 0, record it in the cache, and then do the math here to offset the translate values accordingly (basically do the 3D transform-origin part manually)

if (zOrigin && (rotationX !== _zeroDeg || rotationY !== _zeroDeg)) {
    var angle = parseFloat(rotationY) * _DEG2RAD,
        a13 = Math.sin(angle),
        a33 = Math.cos(angle),
        cos;

angle = parseFloat(rotationX) * _DEG2RAD;
    cos = Math.cos(angle);
    x = _addPxTranslate(target, x, a13 * cos * -zOrigin);
    y = _addPxTranslate(target, y, -Math.sin(angle) * -zOrigin);
    z = _addPxTranslate(target, z, a33 * cos * -zOrigin + zOrigin);
  }

if (transformPerspective !== _zeroPx) {
    transforms += "perspective(" + transformPerspective + _endParenthesis;
  }

if (xPercent || yPercent) {
    transforms += "translate(" + xPercent + "%, " + yPercent + "%) ";
  }

if (use3D || x !== _zeroPx || y !== _zeroPx || z !== _zeroPx) {
    transforms += z !== _zeroPx || use3D ? "translate3d(" + x + ", " + y + ", " + z + ") " : "translate(" + x + ", " + y + _endParenthesis;
  }

if (rotation !== _zeroDeg) {
    transforms += "rotate(" + rotation + _endParenthesis;
  }

if (rotationY !== _zeroDeg) {
    transforms += "rotateY(" + rotationY + _endParenthesis;
  }

if (rotationX !== _zeroDeg) {
    transforms += "rotateX(" + rotationX + _endParenthesis;
  }

if (skewX !== _zeroDeg || skewY !== _zeroDeg) {
    transforms += "skew(" + skewX + ", " + skewY + _endParenthesis;
  }

if (scaleX !== 1 || scaleY !== 1) {
    transforms += "scale(" + scaleX + ", " + scaleY + _endParenthesis;
  }

target.style[_transformProp] = transforms || "translate(0, 0)";
},
    _renderSVGTransforms = function _renderSVGTransforms(ratio, cache) {
  var _ref2 = cache || this,
      xPercent = _ref2.xPercent,
      yPercent = _ref2.yPercent,
      x = _ref2.x,
      y = _ref2.y,
      rotation = _ref2.rotation,
      skewX = _ref2.skewX,
      skewY = _ref2.skewY,
      scaleX = _ref2.scaleX,
      scaleY = _ref2.scaleY,
      target = _ref2.target,
      xOrigin = _ref2.xOrigin,
      yOrigin = _ref2.yOrigin,
      xOffset = _ref2.xOffset,
      yOffset = _ref2.yOffset,
      forceCSS = _ref2.forceCSS,
      tx = parseFloat(x),
      ty = parseFloat(y),
      a11,
      a21,
      a12,
      a22,
      temp;

rotation = parseFloat(rotation);
  skewX = parseFloat(skewX);
  skewY = parseFloat(skewY);

if (skewY) {
    //for performance reasons, we combine all skewing into the skewX and rotation values. Remember, a skewY of 10 degrees looks the same as a rotation of 10 degrees plus a skewX of 10 degrees.
    skewY = parseFloat(skewY);
    skewX += skewY;
    rotation += skewY;
  }

if (rotation || skewX) {
    rotation *= _DEG2RAD;
    skewX *= _DEG2RAD;
    a11 = Math.cos(rotation) * scaleX;
    a21 = Math.sin(rotation) * scaleX;
    a12 = Math.sin(rotation - skewX) * -scaleY;
    a22 = Math.cos(rotation - skewX) * scaleY;

if (skewX) {
      skewY *= _DEG2RAD;
      temp = Math.tan(skewX - skewY);
      temp = Math.sqrt(1 + temp * temp);
      a12 *= temp;
      a22 *= temp;

if (skewY) {
        temp = Math.tan(skewY);
        temp = Math.sqrt(1 + temp * temp);
        a11 *= temp;
        a21 *= temp;
      }
    }

a11 = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(a11);
    a21 = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(a21);
    a12 = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(a12);
    a22 = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(a22);
  } else {
    a11 = scaleX;
    a22 = scaleY;
    a21 = a12 = 0;
  }

if (tx && !~(x + "").indexOf("px") || ty && !~(y + "").indexOf("px")) {
    tx = _convertToUnit(target, "x", x, "px");
    ty = _convertToUnit(target, "y", y, "px");
  }

if (xOrigin || yOrigin || xOffset || yOffset) {
    tx = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(tx + xOrigin - (xOrigin * a11 + yOrigin * a12) + xOffset);
    ty = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(ty + yOrigin - (xOrigin * a21 + yOrigin * a22) + yOffset);
  }

if (xPercent || yPercent) {
    //The SVG spec doesn't support percentage-based translation in the "transform" attribute, so we merge it into the translation to simulate it.
    temp = target.getBBox();
    tx = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(tx + xPercent / 100 * temp.width);
    ty = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._round)(ty + yPercent / 100 * temp.height);
  }

temp = "matrix(" + a11 + "," + a21 + "," + a12 + "," + a22 + "," + tx + "," + ty + ")";
  target.setAttribute("transform", temp);
  forceCSS && (target.style[_transformProp] = temp); //some browsers prioritize CSS transforms over the transform attribute. When we sense that the user has CSS transforms applied, we must overwrite them this way (otherwise some browser simply won't render the transform attribute changes!)
},
    _addRotationalPropTween = function _addRotationalPropTween(plugin, target, property, startNum, endValue) {
  var cap = 360,
      isString = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._isString)(endValue),
      endNum = parseFloat(endValue) * (isString && ~endValue.indexOf("rad") ? _RAD2DEG : 1),
      change = endNum - startNum,
      finalValue = startNum + change + "deg",
      direction,
      pt;

if (isString) {
    direction = endValue.split("_")[1];

if (direction === "short") {
      change %= cap;

if (change !== change % (cap / 2)) {
        change += change < 0 ? cap : -cap;
      }
    }

if (direction === "cw" && change < 0) {
      change = (change + cap * _bigNum) % cap - ~~(change / cap) * cap;
    } else if (direction === "ccw" && change > 0) {
      change = (change - cap * _bigNum) % cap - ~~(change / cap) * cap;
    }
  }

plugin._pt = pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(plugin._pt, target, property, startNum, change, _renderPropWithEnd);
  pt.e = finalValue;
  pt.u = "deg";

plugin._props.push(property);

return pt;
},
    _assign = function _assign(target, source) {
  // Internet Explorer doesn't have Object.assign(), so we recreate it here.
  for (var p in source) {
    target[p] = source[p];
  }

return target;
},
    _addRawTransformPTs = function _addRawTransformPTs(plugin, transforms, target) {
  //for handling cases where someone passes in a whole transform string, like transform: "scale(2, 3) rotate(20deg) translateY(30em)"
  var startCache = _assign({}, target._gsap),
      exclude = "perspective,force3D,transformOrigin,svgOrigin",
      style = target.style,
      endCache,
      p,
      startValue,
      endValue,
      startNum,
      endNum,
      startUnit,
      endUnit;

if (startCache.svg) {
    startValue = target.getAttribute("transform");
    target.setAttribute("transform", "");
    style[_transformProp] = transforms;
    endCache = _parseTransform(target, 1);

_removeProperty(target, _transformProp);

target.setAttribute("transform", startValue);
  } else {
    startValue = getComputedStyle(target)[_transformProp];
    style[_transformProp] = transforms;
    endCache = _parseTransform(target, 1);
    style[_transformProp] = startValue;
  }

for (p in _transformProps) {
    startValue = startCache[p];
    endValue = endCache[p];

if (startValue !== endValue && exclude.indexOf(p) < 0) {
      //tweening to no perspective gives very unintuitive results - just keep the same perspective in that case.
      startUnit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(startValue);
      endUnit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(endValue);
      startNum = startUnit !== endUnit ? _convertToUnit(target, p, startValue, endUnit) : parseFloat(startValue);
      endNum = parseFloat(endValue);
      plugin._pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(plugin._pt, endCache, p, startNum, endNum - startNum, _renderCSSProp);
      plugin._pt.u = endUnit || 0;

plugin._props.push(p);
    }
  }

_assign(endCache, startCache);
}; // handle splitting apart padding, margin, borderWidth, and borderRadius into their 4 components. Firefox, for example, won't report borderRadius correctly - it will only do borderTopLeftRadius and the other corners. We also want to handle paddingTop, marginLeft, borderRightWidth, etc.

(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._forEachName)("padding,margin,Width,Radius", function (name, index) {
  var t = "Top",
      r = "Right",
      b = "Bottom",
      l = "Left",
      props = (index < 3 ? [t, r, b, l] : [t + l, t + r, b + r, b + l]).map(function (side) {
    return index < 2 ? name + side : "border" + side + name;
  });

_specialProps[index > 1 ? "border" + name : name] = function (plugin, target, property, endValue, tween) {
    var a, vars;

if (arguments.length < 4) {
      // getter, passed target, property, and unit (from _get())
      a = props.map(function (prop) {
        return _get(plugin, prop, property);
      });
      vars = a.join(" ");
      return vars.split(a[0]).length === 5 ? a[0] : vars;
    }

a = (endValue + "").split(" ");
    vars = {};
    props.forEach(function (prop, i) {
      return vars[prop] = a[i] = a[i] || a[(i - 1) / 2 | 0];
    });
    plugin.init(target, vars, tween);
  };
});

var CSSPlugin = {
  name: "css",
  register: _initCore,
  targetTest: function targetTest(target) {
    return target.style && target.nodeType;
  },
  init: function init(target, vars, tween, index, targets) {
    var props = this._props,
        style = target.style,
        startAt = tween.vars.startAt,
        startValue,
        endValue,
        endNum,
        startNum,
        type,
        specialProp,
        p,
        startUnit,
        endUnit,
        relative,
        isTransformRelated,
        transformPropTween,
        cache,
        smooth,
        hasPriority,
        inlineProps;
    _pluginInitted || _initCore(); // we may call init() multiple times on the same plugin instance, like when adding special properties, so make sure we don't overwrite the revert data or inlineProps

this.styles = this.styles || _getStyleSaver(target);
    inlineProps = this.styles.props;
    this.tween = tween;

for (p in vars) {
      if (p === "autoRound") {
        continue;
      }

endValue = vars[p];

if (_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._plugins[p] && (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._checkPlugin)(p, vars, tween, index, target, targets)) {
        // plugins
        continue;
      }

type = typeof endValue;
      specialProp = _specialProps[p];

if (type === "function") {
        endValue = endValue.call(tween, index, target, targets);
        type = typeof endValue;
      }

if (type === "string" && ~endValue.indexOf("random(")) {
        endValue = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._replaceRandom)(endValue);
      }

if (specialProp) {
        specialProp(this, target, p, endValue, tween) && (hasPriority = 1);
      } else if (p.substr(0, 2) === "--") {
        //CSS variable
        startValue = (getComputedStyle(target).getPropertyValue(p) + "").trim();
        endValue += "";
        _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._colorExp.lastIndex = 0;

if (!_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._colorExp.test(startValue)) {
          // colors don't have units
          startUnit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(startValue);
          endUnit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(endValue);
        }

endUnit ? startUnit !== endUnit && (startValue = _convertToUnit(target, p, startValue, endUnit) + endUnit) : startUnit && (endValue += startUnit);
        this.add(style, "setProperty", startValue, endValue, index, targets, 0, 0, p);
        props.push(p);
        inlineProps.push(p, 0, style[p]);
      } else if (type !== "undefined") {
        if (startAt && p in startAt) {
          // in case someone hard-codes a complex value as the start, like top: "calc(2vh / 2)". Without this, it'd use the computed value (always in px)
          startValue = typeof startAt[p] === "function" ? startAt[p].call(tween, index, target, targets) : startAt[p];
          (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._isString)(startValue) && ~startValue.indexOf("random(") && (startValue = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._replaceRandom)(startValue));
          (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(startValue + "") || (startValue += _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units[p] || (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(_get(target, p)) || ""); // for cases when someone passes in a unitless value like {x: 100}; if we try setting translate(100, 0px) it won't work.

(startValue + "").charAt(1) === "=" && (startValue = _get(target, p)); // can't work with relative values
        } else {
          startValue = _get(target, p);
        }

startNum = parseFloat(startValue);
        relative = type === "string" && endValue.charAt(1) === "=" && endValue.substr(0, 2);
        relative && (endValue = endValue.substr(2));
        endNum = parseFloat(endValue);

if (p in _propertyAliases) {
          if (p === "autoAlpha") {
            //special case where we control the visibility along with opacity. We still allow the opacity value to pass through and get tweened.
            if (startNum === 1 && _get(target, "visibility") === "hidden" && endNum) {
              //if visibility is initially set to "hidden", we should interpret that as intent to make opacity 0 (a convenience)
              startNum = 0;
            }

inlineProps.push("visibility", 0, style.visibility);

_addNonTweeningPT(this, style, "visibility", startNum ? "inherit" : "hidden", endNum ? "inherit" : "hidden", !endNum);
          }

if (p !== "scale" && p !== "transform") {
            p = _propertyAliases[p];
            ~p.indexOf(",") && (p = p.split(",")[0]);
          }
        }

isTransformRelated = p in _transformProps; //--- TRANSFORM-RELATED ---

if (isTransformRelated) {
          this.styles.save(p);

if (!transformPropTween) {
            cache = target._gsap;
            cache.renderTransform && !vars.parseTransform || _parseTransform(target, vars.parseTransform); // if, for example, gsap.set(... {transform:"translateX(50vw)"}), the _get() call doesn't parse the transform, thus cache.renderTransform won't be set yet so force the parsing of the transform here.

smooth = vars.smoothOrigin !== false && cache.smooth;
            transformPropTween = this._pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(this._pt, style, _transformProp, 0, 1, cache.renderTransform, cache, 0, -1); //the first time through, create the rendering PropTween so that it runs LAST (in the linked list, we keep adding to the beginning)

transformPropTween.dep = 1; //flag it as dependent so that if things get killed/overwritten and this is the only PropTween left, we can safely kill the whole tween.
          }

if (p === "scale") {
            this._pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(this._pt, cache, "scaleY", cache.scaleY, (relative ? (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._parseRelative)(cache.scaleY, relative + endNum) : endNum) - cache.scaleY || 0, _renderCSSProp);
            this._pt.u = 0;
            props.push("scaleY", p);
            p += "X";
          } else if (p === "transformOrigin") {
            inlineProps.push(_transformOriginProp, 0, style[_transformOriginProp]);
            endValue = _convertKeywordsToPercentages(endValue); //in case something like "left top" or "bottom right" is passed in. Convert to percentages.

if (cache.svg) {
              _applySVGOrigin(target, endValue, 0, smooth, 0, this);
            } else {
              endUnit = parseFloat(endValue.split(" ")[2]) || 0; //handle the zOrigin separately!

endUnit !== cache.zOrigin && _addNonTweeningPT(this, cache, "zOrigin", cache.zOrigin, endUnit);

_addNonTweeningPT(this, style, p, _firstTwoOnly(startValue), _firstTwoOnly(endValue));
            }

continue;
          } else if (p === "svgOrigin") {
            _applySVGOrigin(target, endValue, 1, smooth, 0, this);

continue;
          } else if (p in _rotationalProperties) {
            _addRotationalPropTween(this, cache, p, startNum, relative ? (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._parseRelative)(startNum, relative + endValue) : endValue);

continue;
          } else if (p === "smoothOrigin") {
            _addNonTweeningPT(this, cache, "smooth", cache.smooth, endValue);

continue;
          } else if (p === "force3D") {
            cache[p] = endValue;
            continue;
          } else if (p === "transform") {
            _addRawTransformPTs(this, endValue, target);

continue;
          }
        } else if (!(p in style)) {
          p = _checkPropPrefix(p) || p;
        }

if (isTransformRelated || (endNum || endNum === 0) && (startNum || startNum === 0) && !_complexExp.test(endValue) && p in style) {
          startUnit = (startValue + "").substr((startNum + "").length);
          endNum || (endNum = 0); // protect against NaN

endUnit = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.getUnit)(endValue) || (p in _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units ? _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units[p] : startUnit);
          startUnit !== endUnit && (startNum = _convertToUnit(target, p, startValue, endUnit));
          this._pt = new _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.PropTween(this._pt, isTransformRelated ? cache : style, p, startNum, (relative ? (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._parseRelative)(startNum, relative + endNum) : endNum) - startNum, !isTransformRelated && (endUnit === "px" || p === "zIndex") && vars.autoRound !== false ? _renderRoundedCSSProp : _renderCSSProp);
          this._pt.u = endUnit || 0;

if (startUnit !== endUnit && endUnit !== "%") {
            //when the tween goes all the way back to the beginning, we need to revert it to the OLD/ORIGINAL value (with those units). We record that as a "b" (beginning) property and point to a render method that handles that. (performance optimization)
            this._pt.b = startValue;
            this._pt.r = _renderCSSPropWithBeginning;
          }
        } else if (!(p in style)) {
          if (p in target) {
            //maybe it's not a style - it could be a property added directly to an element in which case we'll try to animate that.
            this.add(target, p, startValue || target[p], relative ? relative + endValue : endValue, index, targets);
          } else if (p !== "parseTransform") {
            (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._missingPlugin)(p, endValue);

continue;
          }
        } else {
          _tweenComplexCSSString.call(this, target, p, startValue, relative ? relative + endValue : endValue);
        }

isTransformRelated || (p in style ? inlineProps.push(p, 0, style[p]) : inlineProps.push(p, 1, startValue || target[p]));
        props.push(p);
      }
    }

hasPriority && (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._sortPropTweensByPriority)(this);
  },
  render: function render(ratio, data) {
    if (data.tween._time || !_reverting()) {
      var pt = data._pt;

while (pt) {
        pt.r(ratio, pt.d);
        pt = pt._next;
      }
    } else {
      data.styles.revert();
    }
  },
  get: _get,
  aliases: _propertyAliases,
  getSetter: function getSetter(target, property, plugin) {
    //returns a setter function that accepts target, property, value and applies it accordingly. Remember, properties like "x" aren't as simple as target.style.property = value because they've got to be applied to a proxy object and then merged into a transform string in a renderer.
    var p = _propertyAliases[property];
    p && p.indexOf(",") < 0 && (property = p);
    return property in _transformProps && property !== _transformOriginProp && (target._gsap.x || _get(target, "x")) ? plugin && _recentSetterPlugin === plugin ? property === "scale" ? _setterScale : _setterTransform : (_recentSetterPlugin = plugin || {}) && (property === "scale" ? _setterScaleWithRender : _setterTransformWithRender) : target.style && !(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._isUndefined)(target.style[property]) ? _setterCSSStyle : ~property.indexOf("-") ? _setterCSSProp : (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._getSetter)(target, property);
  },
  core: {
    _removeProperty: _removeProperty,
    _getMatrix: _getMatrix
  }
};
_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap.utils.checkPrefix = _checkPropPrefix;
_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap.core.getStyleSaver = _getStyleSaver;

(function (positionAndScale, rotation, others, aliases) {
  var all = (0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._forEachName)(positionAndScale + "," + rotation + "," + others, function (name) {
    _transformProps[name] = 1;
  });

(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._forEachName)(rotation, function (name) {
    _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units[name] = "deg";
    _rotationalProperties[name] = 1;
  });

_propertyAliases[all[13]] = positionAndScale + "," + rotation;

(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._forEachName)(aliases, function (name) {
    var split = name.split(":");
    _propertyAliases[split[1]] = all[split[0]];
  });
})("x,y,z,scale,scaleX,scaleY,xPercent,yPercent", "rotation,rotationX,rotationY,skewX,skewY", "transform,transformOrigin,svgOrigin,force3D,smoothOrigin,transformPerspective", "0:translateX,1:translateY,2:translateZ,8:rotate,8:rotationZ,8:rotateZ,9:rotateX,10:rotateY");

(0,_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._forEachName)("x,y,z,top,right,bottom,left,width,height,fontSize,padding,margin,perspective", function (name) {
  _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__._config.units[name] = "px";
});

_gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap.registerPlugin(CSSPlugin);

/***/ }),

/***/ "./node_modules/gsap/CSSRulePlugin.js":
/*!********************************************!*\
  !*** ./node_modules/gsap/CSSRulePlugin.js ***!
  \********************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "CSSRulePlugin": () => (/* binding */ CSSRulePlugin),
/* harmony export */   "default": () => (/* binding */ CSSRulePlugin)
/* harmony export */ });
/*!
 * CSSRulePlugin 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */
var gsap,
    _coreInitted,
    _win,
    _doc,
    CSSPlugin,
    _windowExists = function _windowExists() {
  return typeof window !== "undefined";
},
    _getGSAP = function _getGSAP() {
  return gsap || _windowExists() && (gsap = window.gsap) && gsap.registerPlugin && gsap;
},
    _checkRegister = function _checkRegister() {
  if (!_coreInitted) {
    _initCore();

if (!CSSPlugin) {
      console.warn("Please gsap.registerPlugin(CSSPlugin, CSSRulePlugin)");
    }
  }

return _coreInitted;
},
    _initCore = function _initCore(core) {
  gsap = core || _getGSAP();

if (_windowExists()) {
    _win = window;
    _doc = document;
  }

if (gsap) {
    CSSPlugin = gsap.plugins.css;

if (CSSPlugin) {
      _coreInitted = 1;
    }
  }
};

var CSSRulePlugin = {
  version: "3.11.4",
  name: "cssRule",
  init: function init(target, value, tween, index, targets) {
    if (!_checkRegister() || typeof target.cssText === "undefined") {
      return false;
    }

var div = target._gsProxy = target._gsProxy || _doc.createElement("div");

this.ss = target;
    this.style = div.style;
    div.style.cssText = target.cssText;
    CSSPlugin.prototype.init.call(this, div, value, tween, index, targets); //we just offload all the work to the regular CSSPlugin and then copy the cssText back over to the rule in the render() method. This allows us to have all of the updates to CSSPlugin automatically flow through to CSSRulePlugin instead of having to maintain both
  },
  render: function render(ratio, data) {
    var pt = data._pt,
        style = data.style,
        ss = data.ss,
        i;

while (pt) {
      pt.r(ratio, pt.d);
      pt = pt._next;
    }

i = style.length;

while (--i > -1) {
      ss[style[i]] = style[style[i]];
    }
  },
  getRule: function getRule(selector) {
    _checkRegister();

var ruleProp = _doc.all ? "rules" : "cssRules",
        styleSheets = _doc.styleSheets,
        i = styleSheets.length,
        pseudo = selector.charAt(0) === ":",
        j,
        curSS,
        cs,
        a;
    selector = (pseudo ? "" : ",") + selector.split("::").join(":").toLowerCase() + ","; //note: old versions of IE report tag name selectors as upper case, so we just change everything to lowercase.

if (pseudo) {
      a = [];
    }

while (i--) {
      //Firefox may throw insecure operation errors when css is loaded from other domains, so try/catch.
      try {
        curSS = styleSheets[i][ruleProp];

if (!curSS) {
          continue;
        }

j = curSS.length;
      } catch (e) {
        console.warn(e);
        continue;
      }

while (--j > -1) {
        cs = curSS[j];

if (cs.selectorText && ("," + cs.selectorText.split("::").join(":").toLowerCase() + ",").indexOf(selector) !== -1) {
          //note: IE adds an extra ":" to pseudo selectors, so .myClass:after becomes .myClass::after, so we need to strip the extra one out.
          if (pseudo) {
            a.push(cs.style);
          } else {
            return cs.style;
          }
        }
      }
    }

return a;
  },
  register: _initCore
};
_getGSAP() && gsap.registerPlugin(CSSRulePlugin);

/***/ }),

/***/ "./node_modules/gsap/Observer.js":
/*!***************************************!*\
  !*** ./node_modules/gsap/Observer.js ***!
  \***************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "Observer": () => (/* binding */ Observer),
/* harmony export */   "_getProxyProp": () => (/* binding */ _getProxyProp),
/* harmony export */   "_getScrollFunc": () => (/* binding */ _getScrollFunc),
/* harmony export */   "_getTarget": () => (/* binding */ _getTarget),
/* harmony export */   "_getVelocityProp": () => (/* binding */ _getVelocityProp),
/* harmony export */   "_horizontal": () => (/* binding */ _horizontal),
/* harmony export */   "_isViewport": () => (/* binding */ _isViewport),
/* harmony export */   "_proxies": () => (/* binding */ _proxies),
/* harmony export */   "_scrollers": () => (/* binding */ _scrollers),
/* harmony export */   "_vertical": () => (/* binding */ _vertical),
/* harmony export */   "default": () => (/* binding */ Observer)
/* harmony export */ });
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

/*!
 * Observer 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */
var gsap,
    _coreInitted,
    _clamp,
    _win,
    _doc,
    _docEl,
    _body,
    _isTouch,
    _pointerType,
    ScrollTrigger,
    _root,
    _normalizer,
    _eventTypes,
    _context,
    _getGSAP = function _getGSAP() {
  return gsap || typeof window !== "undefined" && (gsap = window.gsap) && gsap.registerPlugin && gsap;
},
    _passThrough = function _passThrough(p) {
  return p;
},
    _startup = 1,
    _observers = [],
    _scrollers = [],
    _proxies = [],
    _getTime = Date.now,
    _bridge = function _bridge(name, value) {
  return value;
},
    _integrate = function _integrate() {
  var core = ScrollTrigger.core,
      data = core.bridge || {},
      scrollers = core._scrollers,
      proxies = core._proxies;
  scrollers.push.apply(scrollers, _scrollers);
  proxies.push.apply(proxies, _proxies);
  _scrollers = scrollers;
  _proxies = proxies;

_bridge = function _bridge(name, value) {
    return data[name](value);
  };
},
    _getProxyProp = function _getProxyProp(element, property) {
  return ~_proxies.indexOf(element) && _proxies[_proxies.indexOf(element) + 1][property];
},
    _isViewport = function _isViewport(el) {
  return !!~_root.indexOf(el);
},
    _addListener = function _addListener(element, type, func, nonPassive, capture) {
  return element.addEventListener(type, func, {
    passive: !nonPassive,
    capture: !!capture
  });
},
    _removeListener = function _removeListener(element, type, func, capture) {
  return element.removeEventListener(type, func, !!capture);
},
    _scrollLeft = "scrollLeft",
    _scrollTop = "scrollTop",
    _onScroll = function _onScroll() {
  return _normalizer && _normalizer.isPressed || _scrollers.cache++;
},
    _scrollCacheFunc = function _scrollCacheFunc(f, doNotCache) {
  var cachingFunc = function cachingFunc(value) {
    // since reading the scrollTop/scrollLeft/pageOffsetY/pageOffsetX can trigger a layout, this function allows us to cache the value so it only gets read fresh after a "scroll" event fires (or while we're refreshing because that can lengthen the page and alter the scroll position). when "soft" is true, that means don't actually set the scroll, but cache the new value instead (useful in ScrollSmoother)
    if (value || value === 0) {
      _startup && (_win.history.scrollRestoration = "manual"); // otherwise the new position will get overwritten by the browser onload.

var isNormalizing = _normalizer && _normalizer.isPressed;
      value = cachingFunc.v = Math.round(value) || (_normalizer && _normalizer.iOS ? 1 : 0); //TODO: iOS Bug: if you allow it to go to 0, Safari can start to report super strange (wildly inaccurate) touch positions!

f(value);
      cachingFunc.cacheID = _scrollers.cache;
      isNormalizing && _bridge("ss", value); // set scroll (notify ScrollTrigger so it can dispatch a "scrollStart" event if necessary
    } else if (doNotCache || _scrollers.cache !== cachingFunc.cacheID || _bridge("ref")) {
      cachingFunc.cacheID = _scrollers.cache;
      cachingFunc.v = f();
    }

return cachingFunc.v + cachingFunc.offset;
  };

cachingFunc.offset = 0;
  return f && cachingFunc;
},
    _horizontal = {
  s: _scrollLeft,
  p: "left",
  p2: "Left",
  os: "right",
  os2: "Right",
  d: "width",
  d2: "Width",
  a: "x",
  sc: _scrollCacheFunc(function (value) {
    return arguments.length ? _win.scrollTo(value, _vertical.sc()) : _win.pageXOffset || _doc[_scrollLeft] || _docEl[_scrollLeft] || _body[_scrollLeft] || 0;
  })
},
    _vertical = {
  s: _scrollTop,
  p: "top",
  p2: "Top",
  os: "bottom",
  os2: "Bottom",
  d: "height",
  d2: "Height",
  a: "y",
  op: _horizontal,
  sc: _scrollCacheFunc(function (value) {
    return arguments.length ? _win.scrollTo(_horizontal.sc(), value) : _win.pageYOffset || _doc[_scrollTop] || _docEl[_scrollTop] || _body[_scrollTop] || 0;
  })
},
    _getTarget = function _getTarget(t) {
  return gsap.utils.toArray(t)[0] || (typeof t === "string" && gsap.config().nullTargetWarn !== false ? console.warn("Element not found:", t) : null);
},
    _getScrollFunc = function _getScrollFunc(element, _ref) {
  var s = _ref.s,
      sc = _ref.sc;
  // we store the scroller functions in an alternating sequenced Array like [element, verticalScrollFunc, horizontalScrollFunc, ...] so that we can minimize memory, maximize performance, and we also record the last position as a ".rec" property in order to revert to that after refreshing to ensure things don't shift around.
  _isViewport(element) && (element = _doc.scrollingElement || _docEl);

var i = _scrollers.indexOf(element),
      offset = sc === _vertical.sc ? 1 : 2;

!~i && (i = _scrollers.push(element) - 1);
  _scrollers[i + offset] || element.addEventListener("scroll", _onScroll); // clear the cache when a scroll occurs

var prev = _scrollers[i + offset],
      func = prev || (_scrollers[i + offset] = _scrollCacheFunc(_getProxyProp(element, s), true) || (_isViewport(element) ? sc : _scrollCacheFunc(function (value) {
    return arguments.length ? element[s] = value : element[s];
  })));
  func.target = element;
  prev || (func.smooth = gsap.getProperty(element, "scrollBehavior") === "smooth"); // only set it the first time (don't reset every time a scrollFunc is requested because perhaps it happens during a refresh() when it's disabled in ScrollTrigger.

return func;
},
    _getVelocityProp = function _getVelocityProp(value, minTimeRefresh, useDelta) {
  var v1 = value,
      v2 = value,
      t1 = _getTime(),
      t2 = t1,
      min = minTimeRefresh || 50,
      dropToZeroTime = Math.max(500, min * 3),
      update = function update(value, force) {
    var t = _getTime();

if (force || t - t1 > min) {
      v2 = v1;
      v1 = value;
      t2 = t1;
      t1 = t;
    } else if (useDelta) {
      v1 += value;
    } else {
      // not totally necessary, but makes it a bit more accurate by adjusting the v1 value according to the new slope. This way we're not just ignoring the incoming data. Removing for now because it doesn't seem to make much practical difference and it's probably not worth the kb.
      v1 = v2 + (value - v2) / (t - t2) * (t1 - t2);
    }
  },
      reset = function reset() {
    v2 = v1 = useDelta ? 0 : v1;
    t2 = t1 = 0;
  },
      getVelocity = function getVelocity(latestValue) {
    var tOld = t2,
        vOld = v2,
        t = _getTime();

(latestValue || latestValue === 0) && latestValue !== v1 && update(latestValue);
    return t1 === t2 || t - t2 > dropToZeroTime ? 0 : (v1 + (useDelta ? vOld : -vOld)) / ((useDelta ? t : t1) - tOld) * 1000;
  };

return {
    update: update,
    reset: reset,
    getVelocity: getVelocity
  };
},
    _getEvent = function _getEvent(e, preventDefault) {
  preventDefault && !e._gsapAllow && e.preventDefault();
  return e.changedTouches ? e.changedTouches[0] : e;
},
    _getAbsoluteMax = function _getAbsoluteMax(a) {
  var max = Math.max.apply(Math, a),
      min = Math.min.apply(Math, a);
  return Math.abs(max) >= Math.abs(min) ? max : min;
},
    _setScrollTrigger = function _setScrollTrigger() {
  ScrollTrigger = gsap.core.globals().ScrollTrigger;
  ScrollTrigger && ScrollTrigger.core && _integrate();
},
    _initCore = function _initCore(core) {
  gsap = core || _getGSAP();

if (gsap && typeof document !== "undefined" && document.body) {
    _win = window;
    _doc = document;
    _docEl = _doc.documentElement;
    _body = _doc.body;
    _root = [_win, _doc, _docEl, _body];
    _clamp = gsap.utils.clamp;

_context = gsap.core.context || function () {};

_pointerType = "onpointerenter" in _body ? "pointer" : "mouse"; // isTouch is 0 if no touch, 1 if ONLY touch, and 2 if it can accommodate touch but also other types like mouse/pointer.

_isTouch = Observer.isTouch = _win.matchMedia && _win.matchMedia("(hover: none), (pointer: coarse)").matches ? 1 : "ontouchstart" in _win || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0 ? 2 : 0;
    _eventTypes = Observer.eventTypes = ("ontouchstart" in _docEl ? "touchstart,touchmove,touchcancel,touchend" : !("onpointerdown" in _docEl) ? "mousedown,mousemove,mouseup,mouseup" : "pointerdown,pointermove,pointercancel,pointerup").split(",");
    setTimeout(function () {
      return _startup = 0;
    }, 500);

_setScrollTrigger();

_coreInitted = 1;
  }

return _coreInitted;
};

_horizontal.op = _vertical;
_scrollers.cache = 0;
var Observer = /*#__PURE__*/function () {
  function Observer(vars) {
    this.init(vars);
  }

var _proto = Observer.prototype;

_proto.init = function init(vars) {
    _coreInitted || _initCore(gsap) || console.warn("Please gsap.registerPlugin(Observer)");
    ScrollTrigger || _setScrollTrigger();
    var tolerance = vars.tolerance,
        dragMinimum = vars.dragMinimum,
        type = vars.type,
        target = vars.target,
        lineHeight = vars.lineHeight,
        debounce = vars.debounce,
        preventDefault = vars.preventDefault,
        onStop = vars.onStop,
        onStopDelay = vars.onStopDelay,
        ignore = vars.ignore,
        wheelSpeed = vars.wheelSpeed,
        event = vars.event,
        onDragStart = vars.onDragStart,
        onDragEnd = vars.onDragEnd,
        onDrag = vars.onDrag,
        onPress = vars.onPress,
        onRelease = vars.onRelease,
        onRight = vars.onRight,
        onLeft = vars.onLeft,
        onUp = vars.onUp,
        onDown = vars.onDown,
        onChangeX = vars.onChangeX,
        onChangeY = vars.onChangeY,
        onChange = vars.onChange,
        onToggleX = vars.onToggleX,
        onToggleY = vars.onToggleY,
        onHover = vars.onHover,
        onHoverEnd = vars.onHoverEnd,
        onMove = vars.onMove,
        ignoreCheck = vars.ignoreCheck,
        isNormalizer = vars.isNormalizer,
        onGestureStart = vars.onGestureStart,
        onGestureEnd = vars.onGestureEnd,
        onWheel = vars.onWheel,
        onEnable = vars.onEnable,
        onDisable = vars.onDisable,
        onClick = vars.onClick,
        scrollSpeed = vars.scrollSpeed,
        capture = vars.capture,
        allowClicks = vars.allowClicks,
        lockAxis = vars.lockAxis,
        onLockAxis = vars.onLockAxis;
    this.target = target = _getTarget(target) || _docEl;
    this.vars = vars;
    ignore && (ignore = gsap.utils.toArray(ignore));
    tolerance = tolerance || 1e-9;
    dragMinimum = dragMinimum || 0;
    wheelSpeed = wheelSpeed || 1;
    scrollSpeed = scrollSpeed || 1;
    type = type || "wheel,touch,pointer";
    debounce = debounce !== false;
    lineHeight || (lineHeight = parseFloat(_win.getComputedStyle(_body).lineHeight) || 22); // note: browser may report "normal", so default to 22.

var id,
        onStopDelayedCall,
        dragged,
        moved,
        wheeled,
        locked,
        axis,
        self = this,
        prevDeltaX = 0,
        prevDeltaY = 0,
        scrollFuncX = _getScrollFunc(target, _horizontal),
        scrollFuncY = _getScrollFunc(target, _vertical),
        scrollX = scrollFuncX(),
        scrollY = scrollFuncY(),
        limitToTouch = ~type.indexOf("touch") && !~type.indexOf("pointer") && _eventTypes[0] === "pointerdown",
        // for devices that accommodate mouse events and touch events, we need to distinguish.
    isViewport = _isViewport(target),
        ownerDoc = target.ownerDocument || _doc,
        deltaX = [0, 0, 0],
        // wheel, scroll, pointer/touch
    deltaY = [0, 0, 0],
        onClickTime = 0,
        clickCapture = function clickCapture() {
      return onClickTime = _getTime();
    },
        _ignoreCheck = function _ignoreCheck(e, isPointerOrTouch) {
      return (self.event = e) && ignore && ~ignore.indexOf(e.target) || isPointerOrTouch && limitToTouch && e.pointerType !== "touch" || ignoreCheck && ignoreCheck(e, isPointerOrTouch);
    },
        onStopFunc = function onStopFunc() {
      self._vx.reset();

self._vy.reset();

onStopDelayedCall.pause();
      onStop && onStop(self);
    },
        update = function update() {
      var dx = self.deltaX = _getAbsoluteMax(deltaX),
          dy = self.deltaY = _getAbsoluteMax(deltaY),
          changedX = Math.abs(dx) >= tolerance,
          changedY = Math.abs(dy) >= tolerance;

onChange && (changedX || changedY) && onChange(self, dx, dy, deltaX, deltaY); // in ScrollTrigger.normalizeScroll(), we need to know if it was touch/pointer so we need access to the deltaX/deltaY Arrays before we clear them out.

if (changedX) {
        onRight && self.deltaX > 0 && onRight(self);
        onLeft && self.deltaX < 0 && onLeft(self);
        onChangeX && onChangeX(self);
        onToggleX && self.deltaX < 0 !== prevDeltaX < 0 && onToggleX(self);
        prevDeltaX = self.deltaX;
        deltaX[0] = deltaX[1] = deltaX[2] = 0;
      }

if (changedY) {
        onDown && self.deltaY > 0 && onDown(self);
        onUp && self.deltaY < 0 && onUp(self);
        onChangeY && onChangeY(self);
        onToggleY && self.deltaY < 0 !== prevDeltaY < 0 && onToggleY(self);
        prevDeltaY = self.deltaY;
        deltaY[0] = deltaY[1] = deltaY[2] = 0;
      }

if (moved || dragged) {
        onMove && onMove(self);

if (dragged) {
          onDrag(self);
          dragged = false;
        }

moved = false;
      }

locked && !(locked = false) && onLockAxis && onLockAxis(self);

if (wheeled) {
        onWheel(self);
        wheeled = false;
      }

id = 0;
    },
        onDelta = function onDelta(x, y, index) {
      deltaX[index] += x;
      deltaY[index] += y;

self._vx.update(x);

self._vy.update(y);

debounce ? id || (id = requestAnimationFrame(update)) : update();
    },
        onTouchOrPointerDelta = function onTouchOrPointerDelta(x, y) {
      if (lockAxis && !axis) {
        self.axis = axis = Math.abs(x) > Math.abs(y) ? "x" : "y";
        locked = true;
      }

if (axis !== "y") {
        deltaX[2] += x;

self._vx.update(x, true); // update the velocity as frequently as possible instead of in the debounced function so that very quick touch-scrolls (flicks) feel natural. If it's the mouse/touch/pointer, force it so that we get snappy/accurate momentum scroll.

}

if (axis !== "x") {
        deltaY[2] += y;

self._vy.update(y, true);
      }

debounce ? id || (id = requestAnimationFrame(update)) : update();
    },
        _onDrag = function _onDrag(e) {
      if (_ignoreCheck(e, 1)) {
        return;
      }

e = _getEvent(e, preventDefault);
      var x = e.clientX,
          y = e.clientY,
          dx = x - self.x,
          dy = y - self.y,
          isDragging = self.isDragging;
      self.x = x;
      self.y = y;

if (isDragging || Math.abs(self.startX - x) >= dragMinimum || Math.abs(self.startY - y) >= dragMinimum) {
        onDrag && (dragged = true);
        isDragging || (self.isDragging = true);
        onTouchOrPointerDelta(dx, dy);
        isDragging || onDragStart && onDragStart(self);
      }
    },
        _onPress = self.onPress = function (e) {
      if (_ignoreCheck(e, 1)) {
        return;
      }

self.axis = axis = null;
      onStopDelayedCall.pause();
      self.isPressed = true;
      e = _getEvent(e); // note: may need to preventDefault(?) Won't side-scroll on iOS Safari if we do, though.

prevDeltaX = prevDeltaY = 0;
      self.startX = self.x = e.clientX;
      self.startY = self.y = e.clientY;

self._vx.reset(); // otherwise the t2 may be stale if the user touches and flicks super fast and releases in less than 2 requestAnimationFrame ticks, causing velocity to be 0.

self._vy.reset();

_addListener(isNormalizer ? target : ownerDoc, _eventTypes[1], _onDrag, preventDefault, true);

self.deltaX = self.deltaY = 0;
      onPress && onPress(self);
    },
        _onRelease = function _onRelease(e) {
      if (_ignoreCheck(e, 1)) {
        return;
      }

_removeListener(isNormalizer ? target : ownerDoc, _eventTypes[1], _onDrag, true);

var isTrackingDrag = !isNaN(self.y - self.startY),
          wasDragging = self.isDragging && (Math.abs(self.x - self.startX) > 3 || Math.abs(self.y - self.startY) > 3),
          // some touch devices need some wiggle room in terms of sensing clicks - the finger may move a few pixels.
      eventData = _getEvent(e);

if (!wasDragging && isTrackingDrag) {
        self._vx.reset();

self._vy.reset();

if (preventDefault && allowClicks) {
          gsap.delayedCall(0.08, function () {
            // some browsers (like Firefox) won't trust script-generated clicks, so if the user tries to click on a video to play it, for example, it simply won't work. Since a regular "click" event will most likely be generated anyway (one that has its isTrusted flag set to true), we must slightly delay our script-generated click so that the "real"/trusted one is prioritized. Remember, when there are duplicate events in quick succession, we suppress all but the first one. Some browsers don't even trigger the "real" one at all, so our synthetic one is a safety valve that ensures that no matter what, a click event does get dispatched.
            if (_getTime() - onClickTime > 300 && !e.defaultPrevented) {
              if (e.target.click) {
                //some browsers (like mobile Safari) don't properly trigger the click event
                e.target.click();
              } else if (ownerDoc.createEvent) {
                var syntheticEvent = ownerDoc.createEvent("MouseEvents");
                syntheticEvent.initMouseEvent("click", true, true, _win, 1, eventData.screenX, eventData.screenY, eventData.clientX, eventData.clientY, false, false, false, false, 0, null);
                e.target.dispatchEvent(syntheticEvent);
              }
            }
          });
        }
      }

self.isDragging = self.isGesturing = self.isPressed = false;
      onStop && !isNormalizer && onStopDelayedCall.restart(true);
      onDragEnd && wasDragging && onDragEnd(self);
      onRelease && onRelease(self, wasDragging);
    },
        _onGestureStart = function _onGestureStart(e) {
      return e.touches && e.touches.length > 1 && (self.isGesturing = true) && onGestureStart(e, self.isDragging);
    },
        _onGestureEnd = function _onGestureEnd() {
      return (self.isGesturing = false) || onGestureEnd(self);
    },
        onScroll = function onScroll(e) {
      if (_ignoreCheck(e)) {
        return;
      }

var x = scrollFuncX(),
          y = scrollFuncY();
      onDelta((x - scrollX) * scrollSpeed, (y - scrollY) * scrollSpeed, 1);
      scrollX = x;
      scrollY = y;
      onStop && onStopDelayedCall.restart(true);
    },
        _onWheel = function _onWheel(e) {
      if (_ignoreCheck(e)) {
        return;
      }

e = _getEvent(e, preventDefault);
      onWheel && (wheeled = true);
      var multiplier = (e.deltaMode === 1 ? lineHeight : e.deltaMode === 2 ? _win.innerHeight : 1) * wheelSpeed;
      onDelta(e.deltaX * multiplier, e.deltaY * multiplier, 0);
      onStop && !isNormalizer && onStopDelayedCall.restart(true);
    },
        _onMove = function _onMove(e) {
      if (_ignoreCheck(e)) {
        return;
      }

onStopDelayedCall = self._dc = gsap.delayedCall(onStopDelay || 0.25, onStopFunc).pause();
    self.deltaX = self.deltaY = 0;
    self._vx = _getVelocityProp(0, 50, true);
    self._vy = _getVelocityProp(0, 50, true);
    self.scrollX = scrollFuncX;
    self.scrollY = scrollFuncY;
    self.isDragging = self.isGesturing = self.isPressed = false;

_context(this);

self.enable = function (e) {
      if (!self.isEnabled) {
        _addListener(isViewport ? ownerDoc : target, "scroll", _onScroll);

type.indexOf("scroll") >= 0 && _addListener(isViewport ? ownerDoc : target, "scroll", onScroll, preventDefault, capture);
        type.indexOf("wheel") >= 0 && _addListener(target, "wheel", _onWheel, preventDefault, capture);

if (type.indexOf("touch") >= 0 && _isTouch || type.indexOf("pointer") >= 0) {
          _addListener(target, _eventTypes[0], _onPress, preventDefault, capture);

_addListener(ownerDoc, _eventTypes[2], _onRelease);

_addListener(ownerDoc, _eventTypes[3], _onRelease);

allowClicks && _addListener(target, "click", clickCapture, false, true);
          onClick && _addListener(target, "click", _onClick);
          onGestureStart && _addListener(ownerDoc, "gesturestart", _onGestureStart);
          onGestureEnd && _addListener(ownerDoc, "gestureend", _onGestureEnd);
          onHover && _addListener(target, _pointerType + "enter", _onHover);
          onHoverEnd && _addListener(target, _pointerType + "leave", _onHoverEnd);
          onMove && _addListener(target, _pointerType + "move", _onMove);
        }

self.isEnabled = true;
        e && e.type && _onPress(e);
        onEnable && onEnable(self);
      }

return self;
    };

self.disable = function () {
      if (self.isEnabled) {
        // only remove the _onScroll listener if there aren't any others that rely on the functionality.
        _observers.filter(function (o) {
          return o !== self && _isViewport(o.target);
        }).length || _removeListener(isViewport ? ownerDoc : target, "scroll", _onScroll);

if (self.isPressed) {
          self._vx.reset();

self._vy.reset();

_removeListener(isNormalizer ? target : ownerDoc, _eventTypes[1], _onDrag, true);
        }

_removeListener(isViewport ? ownerDoc : target, "scroll", onScroll, capture);

_removeListener(target, "wheel", _onWheel, capture);

_removeListener(target, _eventTypes[0], _onPress, capture);

_removeListener(ownerDoc, _eventTypes[2], _onRelease);

_removeListener(ownerDoc, _eventTypes[3], _onRelease);

_removeListener(target, "click", clickCapture, true);

_removeListener(target, "click", _onClick);

_removeListener(ownerDoc, "gesturestart", _onGestureStart);

_removeListener(ownerDoc, "gestureend", _onGestureEnd);

_removeListener(target, _pointerType + "enter", _onHover);

_removeListener(target, _pointerType + "leave", _onHoverEnd);

_removeListener(target, _pointerType + "move", _onMove);

self.isEnabled = self.isPressed = self.isDragging = false;
        onDisable && onDisable(self);
      }
    };

self.kill = self.revert = function () {
      self.disable();

var i = _observers.indexOf(self);

i >= 0 && _observers.splice(i, 1);
      _normalizer === self && (_normalizer = 0);
    };

_observers.push(self);

isNormalizer && _isViewport(target) && (_normalizer = self);
    self.enable(event);
  };

_createClass(Observer, [{
    key: "velocityX",
    get: function get() {
      return this._vx.getVelocity();
    }
  }, {
    key: "velocityY",
    get: function get() {
      return this._vy.getVelocity();
    }
  }]);

return Observer;
}();
Observer.version = "3.11.4";

Observer.create = function (vars) {
  return new Observer(vars);
};

Observer.register = _initCore;

Observer.getAll = function () {
  return _observers.slice();
};

Observer.getById = function (id) {
  return _observers.filter(function (o) {
    return o.vars.id === id;
  })[0];
};

_getGSAP() && gsap.registerPlugin(Observer);

/***/ }),

/***/ "./node_modules/gsap/ScrollTrigger.js":
/*!********************************************!*\
  !*** ./node_modules/gsap/ScrollTrigger.js ***!
  \********************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "ScrollTrigger": () => (/* binding */ ScrollTrigger),
/* harmony export */   "default": () => (/* binding */ ScrollTrigger)
/* harmony export */ });
/* harmony import */ var _Observer_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./Observer.js */ "./node_modules/gsap/Observer.js");
/*!
 * ScrollTrigger 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */

var gsap,
    _coreInitted,
    _win,
    _doc,
    _docEl,
    _body,
    _root,
    _resizeDelay,
    _toArray,
    _clamp,
    _time2,
    _syncInterval,
    _refreshing,
    _pointerIsDown,
    _transformProp,
    _i,
    _prevWidth,
    _prevHeight,
    _autoRefresh,
    _sort,
    _suppressOverwrites,
    _ignoreResize,
    _normalizer,
    _ignoreMobileResize,
    _baseScreenHeight,
    _baseScreenWidth,
    _fixIOSBug,
    _context,
    _scrollRestoration,
    _limitCallbacks,
    // if true, we'll only trigger callbacks if the active state toggles, so if you scroll immediately past both the start and end positions of a ScrollTrigger (thus inactive to inactive), neither its onEnter nor onLeave will be called. This is useful during startup.
_startup = 1,
    _getTime = Date.now,
    _time1 = _getTime(),
    _lastScrollTime = 0,
    _enabled = 0,
    _pointerDownHandler = function _pointerDownHandler() {
  return _pointerIsDown = 1;
},
    _pointerUpHandler = function _pointerUpHandler() {
  return _pointerIsDown = 0;
},
    _passThrough = function _passThrough(v) {
  return v;
},
    _round = function _round(value) {
  return Math.round(value * 100000) / 100000 || 0;
},
    _windowExists = function _windowExists() {
  return typeof window !== "undefined";
},
    _getGSAP = function _getGSAP() {
  return gsap || _windowExists() && (gsap = window.gsap) && gsap.registerPlugin && gsap;
},
    _isViewport = function _isViewport(e) {
  return !!~_root.indexOf(e);
},
    _getBoundsFunc = function _getBoundsFunc(element) {
  return (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(element, "getBoundingClientRect") || (_isViewport(element) ? function () {
    _winOffsets.width = _win.innerWidth;
    _winOffsets.height = _win.innerHeight;
    return _winOffsets;
  } : function () {
    return _getBounds(element);
  });
},
    _getSizeFunc = function _getSizeFunc(scroller, isViewport, _ref) {
  var d = _ref.d,
      d2 = _ref.d2,
      a = _ref.a;
  return (a = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(scroller, "getBoundingClientRect")) ? function () {
    return a()[d];
  } : function () {
    return (isViewport ? _win["inner" + d2] : scroller["client" + d2]) || 0;
  };
},
    _getOffsetsFunc = function _getOffsetsFunc(element, isViewport) {
  return !isViewport || ~_Observer_js__WEBPACK_IMPORTED_MODULE_0__._proxies.indexOf(element) ? _getBoundsFunc(element) : function () {
    return _winOffsets;
  };
},
    _maxScroll = function _maxScroll(element, _ref2) {
  var s = _ref2.s,
      d2 = _ref2.d2,
      d = _ref2.d,
      a = _ref2.a;
  return (s = "scroll" + d2) && (a = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(element, s)) ? a() - _getBoundsFunc(element)()[d] : _isViewport(element) ? (_docEl[s] || _body[s]) - (_win["inner" + d2] || _docEl["client" + d2] || _body["client" + d2]) : element[s] - element["offset" + d2];
},
    _iterateAutoRefresh = function _iterateAutoRefresh(func, events) {
  for (var i = 0; i < _autoRefresh.length; i += 3) {
    (!events || ~events.indexOf(_autoRefresh[i + 1])) && func(_autoRefresh[i], _autoRefresh[i + 1], _autoRefresh[i + 2]);
  }
},
    _isString = function _isString(value) {
  return typeof value === "string";
},
    _isFunction = function _isFunction(value) {
  return typeof value === "function";
},
    _isNumber = function _isNumber(value) {
  return typeof value === "number";
},
    _isObject = function _isObject(value) {
  return typeof value === "object";
},
    _callIfFunc = function _callIfFunc(value) {
  return _isFunction(value) && value();
},
    _combineFunc = function _combineFunc(f1, f2) {
  return function () {
    var result1 = _callIfFunc(f1),
        result2 = _callIfFunc(f2);

return function () {
      _callIfFunc(result1);

_callIfFunc(result2);
    };
  };
},
    _endAnimation = function _endAnimation(animation, reversed, pause) {
  return animation && animation.progress(reversed ? 0 : 1) && pause && animation.pause();
},
    _callback = function _callback(self, func) {
  if (self.enabled) {
    var result = func(self);
    result && result.totalTime && (self.callbackAnimation = result);
  }
},
    _abs = Math.abs,
    _scrollLeft = "scrollLeft",
    _scrollTop = "scrollTop",
    _left = "left",
    _top = "top",
    _right = "right",
    _bottom = "bottom",
    _width = "width",
    _height = "height",
    _Right = "Right",
    _Left = "Left",
    _Top = "Top",
    _Bottom = "Bottom",
    _padding = "padding",
    _margin = "margin",
    _Width = "Width",
    _Height = "Height",
    _px = "px",
    _getComputedStyle = function _getComputedStyle(element) {
  return _win.getComputedStyle(element);
},
    _makePositionable = function _makePositionable(element) {
  // if the element already has position: absolute or fixed, leave that, otherwise make it position: relative
  var position = _getComputedStyle(element).position;

element.style.position = position === "absolute" || position === "fixed" ? position : "relative";
},
    _setDefaults = function _setDefaults(obj, defaults) {
  for (var p in defaults) {
    p in obj || (obj[p] = defaults[p]);
  }

return obj;
},
    _getBounds = function _getBounds(element, withoutTransforms) {
  var tween = withoutTransforms && _getComputedStyle(element)[_transformProp] !== "matrix(1, 0, 0, 1, 0, 0)" && gsap.to(element, {
    x: 0,
    y: 0,
    xPercent: 0,
    yPercent: 0,
    rotation: 0,
    rotationX: 0,
    rotationY: 0,
    scale: 1,
    skewX: 0,
    skewY: 0
  }).progress(1),
      bounds = element.getBoundingClientRect();
  tween && tween.progress(0).kill();
  return bounds;
},
    _getSize = function _getSize(element, _ref3) {
  var d2 = _ref3.d2;
  return element["offset" + d2] || element["client" + d2] || 0;
},
    _getLabelRatioArray = function _getLabelRatioArray(timeline) {
  var a = [],
      labels = timeline.labels,
      duration = timeline.duration(),
      p;

for (p in labels) {
    a.push(labels[p] / duration);
  }

return a;
},
    _getClosestLabel = function _getClosestLabel(animation) {
  return function (value) {
    return gsap.utils.snap(_getLabelRatioArray(animation), value);
  };
},
    _snapDirectional = function _snapDirectional(snapIncrementOrArray) {
  var snap = gsap.utils.snap(snapIncrementOrArray),
      a = Array.isArray(snapIncrementOrArray) && snapIncrementOrArray.slice(0).sort(function (a, b) {
    return a - b;
  });
  return a ? function (value, direction, threshold) {
    if (threshold === void 0) {
      threshold = 1e-3;
    }

var i;

if (!direction) {
      return snap(value);
    }

if (direction > 0) {
      value -= threshold; // to avoid rounding errors. If we're too strict, it might snap forward, then immediately again, and again.

for (i = 0; i < a.length; i++) {
        if (a[i] >= value) {
          return a[i];
        }
      }

return a[i - 1];
    } else {
      i = a.length;
      value += threshold;

while (i--) {
        if (a[i] <= value) {
          return a[i];
        }
      }
    }

return a[0];
  } : function (value, direction, threshold) {
    if (threshold === void 0) {
      threshold = 1e-3;
    }

if (~eqIndex) {
      value.indexOf("%") > eqIndex && (relative *= size / 100);
      value = value.substr(0, eqIndex - 1);
    }

value = relative + (value in _keywords ? _keywords[value] * size : ~value.indexOf("%") ? parseFloat(value) * size / 100 : parseFloat(value) || 0);
  }

return value;
},
    _createMarker = function _createMarker(type, name, container, direction, _ref4, offset, matchWidthEl, containerAnimation) {
  var startColor = _ref4.startColor,
      endColor = _ref4.endColor,
      fontSize = _ref4.fontSize,
      indent = _ref4.indent,
      fontWeight = _ref4.fontWeight;

var e = _doc.createElement("div"),
      useFixedPosition = _isViewport(container) || (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(container, "pinType") === "fixed",
      isScroller = type.indexOf("scroller") !== -1,
      parent = useFixedPosition ? _body : container,
      isStart = type.indexOf("start") !== -1,
      color = isStart ? startColor : endColor,
      css = "border-color:" + color + ";font-size:" + fontSize + ";color:" + color + ";font-weight:" + fontWeight + ";pointer-events:none;white-space:nowrap;font-family:sans-serif,Arial;z-index:1000;padding:4px 8px;border-width:0;border-style:solid;";

css += "position:" + ((isScroller || containerAnimation) && useFixedPosition ? "fixed;" : "absolute;");
  (isScroller || containerAnimation || !useFixedPosition) && (css += (direction === _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical ? _right : _bottom) + ":" + (offset + parseFloat(indent)) + "px;");
  matchWidthEl && (css += "box-sizing:border-box;text-align:left;width:" + matchWidthEl.offsetWidth + "px;");
  e._isStart = isStart;
  e.setAttribute("class", "gsap-marker-" + type + (name ? " marker-" + name : ""));
  e.style.cssText = css;
  e.innerText = name || name === 0 ? type + "-" + name : type;
  parent.children[0] ? parent.insertBefore(e, parent.children[0]) : parent.appendChild(e);
  e._offset = e["offset" + direction.op.d2];

_positionMarker(e, 0, direction, isStart);

return e;
},
    _positionMarker = function _positionMarker(marker, start, direction, flipped) {
  var vars = {
    display: "block"
  },
      side = direction[flipped ? "os2" : "p2"],
      oppositeSide = direction[flipped ? "p2" : "os2"];
  marker._isFlipped = flipped;
  vars[direction.a + "Percent"] = flipped ? -100 : 0;
  vars[direction.a] = flipped ? "1px" : 0;
  vars["border" + side + _Width] = 1;
  vars["border" + oppositeSide + _Width] = 0;
  vars[direction.p] = start + "px";
  gsap.set(marker, vars);
},
    _triggers = [],
    _ids = {},
    _rafID,
    _sync = function _sync() {
  return _getTime() - _lastScrollTime > 34 && (_rafID || (_rafID = requestAnimationFrame(_updateAll)));
},
    _onScroll = function _onScroll() {
  // previously, we tried to optimize performance by batching/deferring to the next requestAnimationFrame(), but discovered that Safari has a few bugs that make this unworkable (especially on iOS). See https://codepen.io/GreenSock/pen/16c435b12ef09c38125204818e7b45fc?editors=0010 and https://codepen.io/GreenSock/pen/JjOxYpQ/3dd65ccec5a60f1d862c355d84d14562?editors=0010 and https://codepen.io/GreenSock/pen/ExbrPNa/087cef197dc35445a0951e8935c41503?editors=0010
  if (!_normalizer || !_normalizer.isPressed || _normalizer.startX > _body.clientWidth) {
    // if the user is dragging the scrollbar, allow it.
    _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache++;

if (_normalizer) {
      _rafID || (_rafID = requestAnimationFrame(_updateAll));
    } else {
      _updateAll(); // Safari in particular (on desktop) NEEDS the immediate update rather than waiting for a requestAnimationFrame() whereas iOS seems to benefit from waiting for the requestAnimationFrame() tick, at least when normalizing. See https://codepen.io/GreenSock/pen/qBYozqO?editors=0110

}

_lastScrollTime || _dispatch("scrollStart");
    _lastScrollTime = _getTime();
  }
},
    _setBaseDimensions = function _setBaseDimensions() {
  _baseScreenWidth = _win.innerWidth;
  _baseScreenHeight = _win.innerHeight;
},
    _onResize = function _onResize() {
  _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache++;
  !_refreshing && !_ignoreResize && !_doc.fullscreenElement && !_doc.webkitFullscreenElement && (!_ignoreMobileResize || _baseScreenWidth !== _win.innerWidth || Math.abs(_win.innerHeight - _baseScreenHeight) > _win.innerHeight * 0.25) && _resizeDelay.restart(true);
},
    // ignore resizes triggered by refresh()
_listeners = {},
    _emptyArray = [],
    _softRefresh = function _softRefresh() {
  return _removeListener(ScrollTrigger, "scrollEnd", _softRefresh) || _refreshAll(true);
},
    _dispatch = function _dispatch(type) {
  return _listeners[type] && _listeners[type].map(function (f) {
    return f();
  }) || _emptyArray;
},
    _savedStyles = [],
    // when ScrollTrigger.saveStyles() is called, the inline styles are recorded in this Array in a sequential format like [element, cssText, gsCache, media]. This keeps it very memory-efficient and fast to iterate through.
_revertRecorded = function _revertRecorded(media) {
  for (var i = 0; i < _savedStyles.length; i += 5) {
    if (!media || _savedStyles[i + 4] && _savedStyles[i + 4].query === media) {
      _savedStyles[i].style.cssText = _savedStyles[i + 1];
      _savedStyles[i].getBBox && _savedStyles[i].setAttribute("transform", _savedStyles[i + 2] || "");
      _savedStyles[i + 3].uncache = 1;
    }
  }
},
    _revertAll = function _revertAll(kill, media) {
  var trigger;

for (_i = 0; _i < _triggers.length; _i++) {
    trigger = _triggers[_i];

if (trigger && (!media || trigger._ctx === media)) {
      if (kill) {
        trigger.kill(1);
      } else {
        trigger.revert(true, true);
      }
    }
  }

media && _revertRecorded(media);
  media || _dispatch("revert");
},
    _clearScrollMemory = function _clearScrollMemory(scrollRestoration, force) {
  // zero-out all the recorded scroll positions. Don't use _triggers because if, for example, .matchMedia() is used to create some ScrollTriggers and then the user resizes and it removes ALL ScrollTriggers, and then go back to a size where there are ScrollTriggers, it would have kept the position(s) saved from the initial state.
  _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache++;
  (force || !_refreshingAll) && _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.forEach(function (obj) {
    return _isFunction(obj) && obj.cacheID++ && (obj.rec = 0);
  });
  _isString(scrollRestoration) && (_win.history.scrollRestoration = _scrollRestoration = scrollRestoration);
},
    _refreshingAll,
    _refreshID = 0,
    _queueRefreshID,
    _queueRefreshAll = function _queueRefreshAll() {
  // we don't want to call _refreshAll() every time we create a new ScrollTrigger (for performance reasons) - it's better to batch them. Some frameworks dynamically load content and we can't rely on the window's "load" or "DOMContentLoaded" events to trigger it.
  if (_queueRefreshID !== _refreshID) {
    var id = _queueRefreshID = _refreshID;
    requestAnimationFrame(function () {
      return id === _refreshID && _refreshAll(true);
    });
  }
},
    _refreshAll = function _refreshAll(force, skipRevert) {
  if (_lastScrollTime && !force) {
    _addListener(ScrollTrigger, "scrollEnd", _softRefresh);

return;
  }

_refreshingAll = ScrollTrigger.isRefreshing = true;

_Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.forEach(function (obj) {
    return _isFunction(obj) && obj.cacheID++ && (obj.rec = obj());
  }); // force the clearing of the cache because some browsers take a little while to dispatch the "scroll" event and the user may have changed the scroll position and then called ScrollTrigger.refresh() right away

var refreshInits = _dispatch("refreshInit");

_sort && ScrollTrigger.sort();
  skipRevert || _revertAll();

_Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.forEach(function (obj) {
    if (_isFunction(obj)) {
      obj.smooth && (obj.target.style.scrollBehavior = "auto"); // smooth scrolling interferes

obj(0);
    }
  });

_triggers.slice(0).forEach(function (t) {
    return t.refresh();
  }); // don't loop with _i because during a refresh() someone could call ScrollTrigger.update() which would iterate through _i resulting in a skip.

_triggers.forEach(function (t, i) {
    // nested pins (pinnedContainer) with pinSpacing may expand the container, so we must accommodate that here.
    if (t._subPinOffset && t.pin) {
      var prop = t.vars.horizontal ? "offsetWidth" : "offsetHeight",
          original = t.pin[prop];
      t.revert(true, 1);
      t.adjustPinSpacing(t.pin[prop] - original);
      t.revert(false, 1);
    }
  });

_triggers.forEach(function (t) {
    return t.vars.end === "max" && t.setPositions(t.start, Math.max(t.start + 1, _maxScroll(t.scroller, t._dir)));
  }); // the scroller's max scroll position may change after all the ScrollTriggers refreshed (like pinning could push it down), so we need to loop back and correct any with end: "max".

refreshInits.forEach(function (result) {
    return result && result.render && result.render(-1);
  }); // if the onRefreshInit() returns an animation (typically a gsap.set()), revert it. This makes it easy to put things in a certain spot before refreshing for measurement purposes, and then put things back.

_Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.forEach(function (obj) {
    if (_isFunction(obj)) {
      obj.smooth && requestAnimationFrame(function () {
        return obj.target.style.scrollBehavior = "smooth";
      });
      obj.rec && obj(obj.rec);
    }
  });

_clearScrollMemory(_scrollRestoration, 1);

_resizeDelay.pause();

_refreshID++;

_updateAll(2);

_triggers.forEach(function (t) {
    return _isFunction(t.vars.onRefresh) && t.vars.onRefresh(t);
  });

_refreshingAll = ScrollTrigger.isRefreshing = false;

_dispatch("refresh");
},
    _lastScroll = 0,
    _direction = 1,
    _primary,
    _updateAll = function _updateAll(force) {
  if (!_refreshingAll || force === 2) {
    ScrollTrigger.isUpdating = true;
    _primary && _primary.update(0); // ScrollSmoother uses refreshPriority -9999 to become the primary that gets updated before all others because it affects the scroll position.

var l = _triggers.length,
        time = _getTime(),
        recordVelocity = time - _time1 >= 50,
        scroll = l && _triggers[0].scroll();

_direction = _lastScroll > scroll ? -1 : 1;
    _lastScroll = scroll;

if (recordVelocity) {
      if (_lastScrollTime && !_pointerIsDown && time - _lastScrollTime > 200) {
        _lastScrollTime = 0;

_dispatch("scrollEnd");
      }

_time2 = _time1;
      _time1 = time;
    }

if (_direction < 0) {
      _i = l;

while (_i-- > 0) {
        _triggers[_i] && _triggers[_i].update(0, recordVelocity);
      }

_direction = 1;
    } else {
      for (_i = 0; _i < l; _i++) {
        _triggers[_i] && _triggers[_i].update(0, recordVelocity);
      }
    }

ScrollTrigger.isUpdating = false;
  }

_rafID = 0;
},
    _propNamesToCopy = [_left, _top, _bottom, _right, _margin + _Bottom, _margin + _Right, _margin + _Top, _margin + _Left, "display", "flexShrink", "float", "zIndex", "gridColumnStart", "gridColumnEnd", "gridRowStart", "gridRowEnd", "gridArea", "justifySelf", "alignSelf", "placeSelf", "order"],
    _stateProps = _propNamesToCopy.concat([_width, _height, "boxSizing", "max" + _Width, "max" + _Height, "position", _margin, _padding, _padding + _Top, _padding + _Right, _padding + _Bottom, _padding + _Left]),
    _swapPinOut = function _swapPinOut(pin, spacer, state) {
  _setState(state);

var cache = pin._gsap;

if (cache.spacerIsNative) {
    _setState(cache.spacerState);
  } else if (pin._gsap.swappedIn) {
    var parent = spacer.parentNode;

if (parent) {
      parent.insertBefore(pin, spacer);
      parent.removeChild(spacer);
    }
  }

pin._gsap.swappedIn = false;
},
    _swapPinIn = function _swapPinIn(pin, spacer, cs, spacerState) {
  if (!pin._gsap.swappedIn) {
    var i = _propNamesToCopy.length,
        spacerStyle = spacer.style,
        pinStyle = pin.style,
        p;

while (i--) {
      p = _propNamesToCopy[i];
      spacerStyle[p] = cs[p];
    }

spacerStyle.position = cs.position === "absolute" ? "absolute" : "relative";
    cs.display === "inline" && (spacerStyle.display = "inline-block");
    pinStyle[_bottom] = pinStyle[_right] = "auto";
    spacerStyle.flexBasis = cs.flexBasis || "auto";
    spacerStyle.overflow = "visible";
    spacerStyle.boxSizing = "border-box";
    spacerStyle[_width] = _getSize(pin, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal) + _px;
    spacerStyle[_height] = _getSize(pin, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical) + _px;
    spacerStyle[_padding] = pinStyle[_margin] = pinStyle[_top] = pinStyle[_left] = "0";

_setState(spacerState);

pinStyle[_width] = pinStyle["max" + _Width] = cs[_width];
    pinStyle[_height] = pinStyle["max" + _Height] = cs[_height];
    pinStyle[_padding] = cs[_padding];

if (pin.parentNode !== spacer) {
      pin.parentNode.insertBefore(spacer, pin);
      spacer.appendChild(pin);
    }

pin._gsap.swappedIn = true;
  }
},
    _capsExp = /([A-Z])/g,
    _setState = function _setState(state) {
  if (state) {
    var style = state.t.style,
        l = state.length,
        i = 0,
        p,
        value;
    (state.t._gsap || gsap.core.getCache(state.t)).uncache = 1; // otherwise transforms may be off

for (; i < l; i += 2) {
      value = state[i + 1];
      p = state[i];

if (value) {
        style[p] = value;
      } else if (style[p]) {
        style.removeProperty(p.replace(_capsExp, "-$1").toLowerCase());
      }
    }
  }
},
    _getState = function _getState(element) {
  // returns an Array with alternating values like [property, value, property, value] and a "t" property pointing to the target (element). Makes it fast and cheap.
  var l = _stateProps.length,
      style = element.style,
      state = [],
      i = 0;

for (; i < l; i++) {
    state.push(_stateProps[i], style[_stateProps[i]]);
  }

state.t = element;
  return state;
},
    _copyState = function _copyState(state, override, omitOffsets) {
  var result = [],
      l = state.length,
      i = omitOffsets ? 8 : 0,
      // skip top, left, right, bottom if omitOffsets is true
  p;

for (; i < l; i += 2) {
    p = state[i];
    result.push(p, p in override ? override[p] : state[i + 1]);
  }

result.t = state.t;
  return result;
},
    _winOffsets = {
  left: 0,
  top: 0
},
    // // potential future feature (?) Allow users to calculate where a trigger hits (scroll position) like getScrollPosition("#id", "top bottom")
// _getScrollPosition = (trigger, position, {scroller, containerAnimation, horizontal}) => {
// 	scroller = _getTarget(scroller || _win);
// 	let direction = horizontal ? _horizontal : _vertical,
// 		isViewport = _isViewport(scroller);
// 	_getSizeFunc(scroller, isViewport, direction);
// 	return _parsePosition(position, _getTarget(trigger), _getSizeFunc(scroller, isViewport, direction)(), direction, _getScrollFunc(scroller, direction)(), 0, 0, 0, _getOffsetsFunc(scroller, isViewport)(), isViewport ? 0 : parseFloat(_getComputedStyle(scroller)["border" + direction.p2 + _Width]) || 0, 0, containerAnimation ? containerAnimation.duration() : _maxScroll(scroller), containerAnimation);
// },
_parsePosition = function _parsePosition(value, trigger, scrollerSize, direction, scroll, marker, markerScroller, self, scrollerBounds, borderWidth, useFixedPosition, scrollerMax, containerAnimation) {
  _isFunction(value) && (value = value(self));

if (_isString(value) && value.substr(0, 3) === "max") {
    value = scrollerMax + (value.charAt(4) === "=" ? _offsetToPx("0" + value.substr(3), scrollerSize) : 0);
  }

var time = containerAnimation ? containerAnimation.time() : 0,
      p1,
      p2,
      element;
  containerAnimation && containerAnimation.seek(0);

if (!_isNumber(value)) {
    _isFunction(trigger) && (trigger = trigger(self));
    var offsets = (value || "0").split(" "),
        bounds,
        localOffset,
        globalOffset,
        display;
    element = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(trigger) || _body;
    bounds = _getBounds(element) || {};

if ((!bounds || !bounds.left && !bounds.top) && _getComputedStyle(element).display === "none") {
      // if display is "none", it won't report getBoundingClientRect() properly
      display = element.style.display;
      element.style.display = "block";
      bounds = _getBounds(element);
      display ? element.style.display = display : element.style.removeProperty("display");
    }

localOffset = _offsetToPx(offsets[0], bounds[direction.d]);
    globalOffset = _offsetToPx(offsets[1] || "0", scrollerSize);
    value = bounds[direction.p] - scrollerBounds[direction.p] - borderWidth + localOffset + scroll - globalOffset;
    markerScroller && _positionMarker(markerScroller, globalOffset, direction, scrollerSize - globalOffset < 20 || markerScroller._isStart && globalOffset > 20);
    scrollerSize -= scrollerSize - globalOffset; // adjust for the marker
  } else if (markerScroller) {
    _positionMarker(markerScroller, scrollerSize, direction, true);
  }

if (marker) {
    var position = value + scrollerSize,
        isStart = marker._isStart;
    p1 = "scroll" + direction.d2;

_positionMarker(marker, position, direction, isStart && position > 20 || !isStart && (useFixedPosition ? Math.max(_body[p1], _docEl[p1]) : marker.parentNode[p1]) <= position + 1);

if (useFixedPosition) {
      scrollerBounds = _getBounds(markerScroller);
      useFixedPosition && (marker.style[direction.op.p] = scrollerBounds[direction.op.p] - direction.op.m - marker._offset + _px);
    }
  }

if (containerAnimation && element) {
    p1 = _getBounds(element);
    containerAnimation.seek(scrollerMax);
    p2 = _getBounds(element);
    containerAnimation._caScrollDist = p1[direction.p] - p2[direction.p];
    value = value / containerAnimation._caScrollDist * scrollerMax;
  }

containerAnimation && containerAnimation.seek(time);
  return containerAnimation ? value : Math.round(value);
},
    _prefixExp = /(webkit|moz|length|cssText|inset)/i,
    _reparent = function _reparent(element, parent, top, left) {
  if (element.parentNode !== parent) {
    var style = element.style,
        p,
        cs;

if (parent === _body) {
      element._stOrig = style.cssText; // record original inline styles so we can revert them later

cs = _getComputedStyle(element);

for (p in cs) {
        // must copy all relevant styles to ensure that nothing changes visually when we reparent to the <body>. Skip the vendor prefixed ones.
        if (!+p && !_prefixExp.test(p) && cs[p] && typeof style[p] === "string" && p !== "0") {
          style[p] = cs[p];
        }
      }

style.top = top;
      style.left = left;
    } else {
      style.cssText = element._stOrig;
    }

gsap.core.getCache(element).uncache = 1;
    parent.appendChild(element);
  }
},
    // _mergeAnimations = animations => {
// 	let tl = gsap.timeline({smoothChildTiming: true}).startTime(Math.min(...animations.map(a => a.globalTime(0))));
// 	animations.forEach(a => {let time = a.totalTime(); tl.add(a); a.totalTime(time); });
// 	tl.smoothChildTiming = false;
// 	return tl;
// },
// returns a function that can be used to tween the scroll position in the direction provided, and when doing so it'll add a .tween property to the FUNCTION itself, and remove it when the tween completes or gets killed. This gives us a way to have multiple ScrollTriggers use a central function for any given scroller and see if there's a scroll tween running (which would affect if/how things get updated)
_getTweenCreator = function _getTweenCreator(scroller, direction) {
  var getScroll = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getScrollFunc)(scroller, direction),
      prop = "_scroll" + direction.p2,
      // add a tweenable property to the scroller that's a getter/setter function, like _scrollTop or _scrollLeft. This way, if someone does gsap.killTweensOf(scroller) it'll kill the scroll tween.
  lastScroll1,
      lastScroll2,
      getTween = function getTween(scrollTo, vars, initialValue, change1, change2) {
    var tween = getTween.tween,
        onComplete = vars.onComplete,
        modifiers = {};
    initialValue = initialValue || getScroll();
    change2 = change1 && change2 || 0; // if change1 is 0, we set that to the difference and ignore change2. Otherwise, there would be a compound effect.

change1 = change1 || scrollTo - initialValue;
    tween && tween.kill();
    lastScroll1 = Math.round(initialValue);
    vars[prop] = scrollTo;
    vars.modifiers = modifiers;

modifiers[prop] = function (value) {
      value = Math.round(getScroll()); // round because in some [very uncommon] Windows environments, it can get reported with decimals even though it was set without.

if (value !== lastScroll1 && value !== lastScroll2 && Math.abs(value - lastScroll1) > 3 && Math.abs(value - lastScroll2) > 3) {
        // if the user scrolls, kill the tween. iOS Safari intermittently misreports the scroll position, it may be the most recently-set one or the one before that! When Safari is zoomed (CMD-+), it often misreports as 1 pixel off too! So if we set the scroll position to 125, for example, it'll actually report it as 124.
        tween.kill();
        getTween.tween = 0;
      } else {
        value = initialValue + change1 * tween.ratio + change2 * tween.ratio * tween.ratio;
      }

lastScroll2 = lastScroll1;
      return lastScroll1 = Math.round(value);
    };

vars.onUpdate = function () {
      _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache++;

_updateAll();
    };

vars.onComplete = function () {
      getTween.tween = 0;
      onComplete && onComplete.call(tween);
    };

tween = getTween.tween = gsap.to(scroller, vars);
    return tween;
  };

scroller[prop] = getScroll;

getScroll.wheelHandler = function () {
    return getTween.tween && getTween.tween.kill() && (getTween.tween = 0);
  };

_addListener(scroller, "wheel", getScroll.wheelHandler); // Windows machines handle mousewheel scrolling in chunks (like "3 lines per scroll") meaning the typical strategy for cancelling the scroll isn't as sensitive. It's much more likely to match one of the previous 2 scroll event positions. So we kill any snapping as soon as there's a wheel event.

return getTween;
};

var ScrollTrigger = /*#__PURE__*/function () {
  function ScrollTrigger(vars, animation) {
    _coreInitted || ScrollTrigger.register(gsap) || console.warn("Please gsap.registerPlugin(ScrollTrigger)");
    this.init(vars, animation);
  }

var _proto = ScrollTrigger.prototype;

_proto.init = function init(vars, animation) {
    this.progress = this.start = 0;
    this.vars && this.kill(true, true); // in case it's being initted again

if (!_enabled) {
      this.update = this.refresh = this.kill = _passThrough;
      return;
    }

vars = _setDefaults(_isString(vars) || _isNumber(vars) || vars.nodeType ? {
      trigger: vars
    } : vars, _defaults);

var _vars = vars,
        onUpdate = _vars.onUpdate,
        toggleClass = _vars.toggleClass,
        id = _vars.id,
        onToggle = _vars.onToggle,
        onRefresh = _vars.onRefresh,
        scrub = _vars.scrub,
        trigger = _vars.trigger,
        pin = _vars.pin,
        pinSpacing = _vars.pinSpacing,
        invalidateOnRefresh = _vars.invalidateOnRefresh,
        anticipatePin = _vars.anticipatePin,
        onScrubComplete = _vars.onScrubComplete,
        onSnapComplete = _vars.onSnapComplete,
        once = _vars.once,
        snap = _vars.snap,
        pinReparent = _vars.pinReparent,
        pinSpacer = _vars.pinSpacer,
        containerAnimation = _vars.containerAnimation,
        fastScrollEnd = _vars.fastScrollEnd,
        preventOverlaps = _vars.preventOverlaps,
        direction = vars.horizontal || vars.containerAnimation && vars.horizontal !== false ? _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal : _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical,
        isToggle = !scrub && scrub !== 0,
        scroller = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(vars.scroller || _win),
        scrollerCache = gsap.core.getCache(scroller),
        isViewport = _isViewport(scroller),
        useFixedPosition = ("pinType" in vars ? vars.pinType : (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(scroller, "pinType") || isViewport && "fixed") === "fixed",
        callbacks = [vars.onEnter, vars.onLeave, vars.onEnterBack, vars.onLeaveBack],
        toggleActions = isToggle && vars.toggleActions.split(" "),
        markers = "markers" in vars ? vars.markers : _defaults.markers,
        borderWidth = isViewport ? 0 : parseFloat(_getComputedStyle(scroller)["border" + direction.p2 + _Width]) || 0,
        self = this,
        onRefreshInit = vars.onRefreshInit && function () {
      return vars.onRefreshInit(self);
    },
        getScrollerSize = _getSizeFunc(scroller, isViewport, direction),
        getScrollerOffsets = _getOffsetsFunc(scroller, isViewport),
        lastSnap = 0,
        lastRefresh = 0,
        scrollFunc = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getScrollFunc)(scroller, direction),
        tweenTo,
        pinCache,
        snapFunc,
        scroll1,
        scroll2,
        start,
        end,
        markerStart,
        markerEnd,
        markerStartTrigger,
        markerEndTrigger,
        markerVars,
        change,
        pinOriginalState,
        pinActiveState,
        pinState,
        spacer,
        offset,
        pinGetter,
        pinSetter,
        pinStart,
        pinChange,
        spacingStart,
        spacerState,
        markerStartSetter,
        pinMoves,
        markerEndSetter,
        cs,
        snap1,
        snap2,
        scrubTween,
        scrubSmooth,
        snapDurClamp,
        snapDelayedCall,
        prevProgress,
        prevScroll,
        prevAnimProgress,
        caMarkerSetter,
        customRevertReturn;

_context(self);

self._dir = direction;
    anticipatePin *= 45;
    self.scroller = scroller;
    self.scroll = containerAnimation ? containerAnimation.time.bind(containerAnimation) : scrollFunc;
    scroll1 = scrollFunc();
    self.vars = vars;
    animation = animation || vars.animation;

if ("refreshPriority" in vars) {
      _sort = 1;
      vars.refreshPriority === -9999 && (_primary = self); // used by ScrollSmoother
    }

scrollerCache.tweenScroll = scrollerCache.tweenScroll || {
      top: _getTweenCreator(scroller, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical),
      left: _getTweenCreator(scroller, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal)
    };
    self.tweenTo = tweenTo = scrollerCache.tweenScroll[direction.p];

self.scrubDuration = function (value) {
      scrubSmooth = _isNumber(value) && value;

if (!scrubSmooth) {
        scrubTween && scrubTween.progress(1).kill();
        scrubTween = 0;
      } else {
        scrubTween ? scrubTween.duration(value) : scrubTween = gsap.to(animation, {
          ease: "expo",
          totalProgress: "+=0.001",
          duration: scrubSmooth,
          paused: true,
          onComplete: function onComplete() {
            return onScrubComplete && onScrubComplete(self);
          }
        });
      }
    };

if (animation) {
      animation.vars.lazy = false;
      animation._initted || animation.vars.immediateRender !== false && vars.immediateRender !== false && animation.duration() && animation.render(0, true, true);
      self.animation = animation.pause();
      animation.scrollTrigger = self;
      self.scrubDuration(scrub);
      snap1 = 0;
      id || (id = animation.vars.id);
    }

_triggers.push(self);

if (snap) {
      // TODO: potential idea: use legitimate CSS scroll snapping by pushing invisible elements into the DOM that serve as snap positions, and toggle the document.scrollingElement.style.scrollSnapType onToggle. See https://codepen.io/GreenSock/pen/JjLrgWM for a quick proof of concept.
      if (!_isObject(snap) || snap.push) {
        snap = {
          snapTo: snap
        };
      }

"scrollBehavior" in _body.style && gsap.set(isViewport ? [_body, _docEl] : scroller, {
        scrollBehavior: "auto"
      }); // smooth scrolling doesn't work with snap.

_Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.forEach(function (o) {
        return _isFunction(o) && o.target === (isViewport ? _doc.scrollingElement || _docEl : scroller) && (o.smooth = false);
      }); // note: set smooth to false on both the vertical and horizontal scroll getters/setters

snapFunc = _isFunction(snap.snapTo) ? snap.snapTo : snap.snapTo === "labels" ? _getClosestLabel(animation) : snap.snapTo === "labelsDirectional" ? _getLabelAtDirection(animation) : snap.directional !== false ? function (value, st) {
        return _snapDirectional(snap.snapTo)(value, _getTime() - lastRefresh < 500 ? 0 : st.direction);
      } : gsap.utils.snap(snap.snapTo);
      snapDurClamp = snap.duration || {
        min: 0.1,
        max: 2
      };
      snapDurClamp = _isObject(snapDurClamp) ? _clamp(snapDurClamp.min, snapDurClamp.max) : _clamp(snapDurClamp, snapDurClamp);
      snapDelayedCall = gsap.delayedCall(snap.delay || scrubSmooth / 2 || 0.1, function () {
        var scroll = scrollFunc(),
            refreshedRecently = _getTime() - lastRefresh < 500,
            tween = tweenTo.tween;

if ((refreshedRecently || Math.abs(self.getVelocity()) < 10) && !tween && !_pointerIsDown && lastSnap !== scroll) {
          var progress = (scroll - start) / change,
              totalProgress = animation && !isToggle ? animation.totalProgress() : progress,
              velocity = refreshedRecently ? 0 : (totalProgress - snap2) / (_getTime() - _time2) * 1000 || 0,
              change1 = gsap.utils.clamp(-progress, 1 - progress, _abs(velocity / 2) * velocity / 0.185),
              naturalEnd = progress + (snap.inertia === false ? 0 : change1),
              endValue = _clamp(0, 1, snapFunc(naturalEnd, self)),
              endScroll = Math.round(start + endValue * change),
              _snap = snap,
              onStart = _snap.onStart,
              _onInterrupt = _snap.onInterrupt,
              _onComplete = _snap.onComplete;

if (scroll <= end && scroll >= start && endScroll !== scroll) {
            if (tween && !tween._initted && tween.data <= _abs(endScroll - scroll)) {
              // there's an overlapping snap! So we must figure out which one is closer and let that tween live.
              return;
            }

if (snap.inertia === false) {
              change1 = endValue - progress;
            }

tweenTo(endScroll, {
              duration: snapDurClamp(_abs(Math.max(_abs(naturalEnd - totalProgress), _abs(endValue - totalProgress)) * 0.185 / velocity / 0.05 || 0)),
              ease: snap.ease || "power3",
              data: _abs(endScroll - scroll),
              // record the distance so that if another snap tween occurs (conflict) we can prioritize the closest snap.
              onInterrupt: function onInterrupt() {
                return snapDelayedCall.restart(true) && _onInterrupt && _onInterrupt(self);
              },
              onComplete: function onComplete() {
                self.update();
                lastSnap = scrollFunc();
                snap1 = snap2 = animation && !isToggle ? animation.totalProgress() : self.progress;
                onSnapComplete && onSnapComplete(self);
                _onComplete && _onComplete(self);
              }
            }, scroll, change1 * change, endScroll - scroll - change1 * change);
            onStart && onStart(self, tweenTo.tween);
          }
        } else if (self.isActive && lastSnap !== scroll) {
          snapDelayedCall.restart(true);
        }
      }).pause();
    }

id && (_ids[id] = self);
    trigger = self.trigger = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(trigger || pin); // if a trigger has some kind of scroll-related effect applied that could contaminate the "y" or "x" position (like a ScrollSmoother effect), we needed a way to temporarily revert it, so we use the stRevert property of the gsCache. It can return another function that we'll call at the end so it can return to its normal state.

customRevertReturn = trigger && trigger._gsap && trigger._gsap.stRevert;
    customRevertReturn && (customRevertReturn = customRevertReturn(self));
    pin = pin === true ? trigger : (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(pin);
    _isString(toggleClass) && (toggleClass = {
      targets: trigger,
      className: toggleClass
    });

if (pin) {
      pinSpacing === false || pinSpacing === _margin || (pinSpacing = !pinSpacing && pin.parentNode && pin.parentNode.style && _getComputedStyle(pin.parentNode).display === "flex" ? false : _padding); // if the parent is display: flex, don't apply pinSpacing by default. We should check that pin.parentNode is an element (not shadow dom window)

self.pin = pin;
      pinCache = gsap.core.getCache(pin);

if (!pinCache.spacer) {
        // record the spacer and pinOriginalState on the cache in case someone tries pinning the same element with MULTIPLE ScrollTriggers - we don't want to have multiple spacers or record the "original" pin state after it has already been affected by another ScrollTrigger.
        if (pinSpacer) {
          pinSpacer = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(pinSpacer);
          pinSpacer && !pinSpacer.nodeType && (pinSpacer = pinSpacer.current || pinSpacer.nativeElement); // for React & Angular

pinCache.spacerIsNative = !!pinSpacer;
          pinSpacer && (pinCache.spacerState = _getState(pinSpacer));
        }

pinCache.spacer = spacer = pinSpacer || _doc.createElement("div");
        spacer.classList.add("pin-spacer");
        id && spacer.classList.add("pin-spacer-" + id);
        pinCache.pinState = pinOriginalState = _getState(pin);
      } else {
        pinOriginalState = pinCache.pinState;
      }

vars.force3D !== false && gsap.set(pin, {
        force3D: true
      });
      self.spacer = spacer = pinCache.spacer;
      cs = _getComputedStyle(pin);
      spacingStart = cs[pinSpacing + direction.os2];
      pinGetter = gsap.getProperty(pin);
      pinSetter = gsap.quickSetter(pin, direction.a, _px); // pin.firstChild && !_maxScroll(pin, direction) && (pin.style.overflow = "hidden"); // protects from collapsing margins, but can have unintended consequences as demonstrated here: https://codepen.io/GreenSock/pen/1e42c7a73bfa409d2cf1e184e7a4248d so it was removed in favor of just telling people to set up their CSS to avoid the collapsing margins (overflow: hidden | auto is just one option. Another is border-top: 1px solid transparent).

_swapPinIn(pin, spacer, cs);

pinState = _getState(pin);
    }

if (markers) {
      markerVars = _isObject(markers) ? _setDefaults(markers, _markerDefaults) : _markerDefaults;
      markerStartTrigger = _createMarker("scroller-start", id, scroller, direction, markerVars, 0);
      markerEndTrigger = _createMarker("scroller-end", id, scroller, direction, markerVars, 0, markerStartTrigger);
      offset = markerStartTrigger["offset" + direction.op.d2];

var content = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)((0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(scroller, "content") || scroller);

markerStart = this.markerStart = _createMarker("start", id, content, direction, markerVars, offset, 0, containerAnimation);
      markerEnd = this.markerEnd = _createMarker("end", id, content, direction, markerVars, offset, 0, containerAnimation);
      containerAnimation && (caMarkerSetter = gsap.quickSetter([markerStart, markerEnd], direction.a, _px));

if (!useFixedPosition && !(_Observer_js__WEBPACK_IMPORTED_MODULE_0__._proxies.length && (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getProxyProp)(scroller, "fixedMarkers") === true)) {
        _makePositionable(isViewport ? _body : scroller);

gsap.set([markerStartTrigger, markerEndTrigger], {
          force3D: true
        });
        markerStartSetter = gsap.quickSetter(markerStartTrigger, direction.a, _px);
        markerEndSetter = gsap.quickSetter(markerEndTrigger, direction.a, _px);
      }
    }

if (containerAnimation) {
      var oldOnUpdate = containerAnimation.vars.onUpdate,
          oldParams = containerAnimation.vars.onUpdateParams;
      containerAnimation.eventCallback("onUpdate", function () {
        self.update(0, 0, 1);
        oldOnUpdate && oldOnUpdate.apply(oldParams || []);
      });
    }

self.previous = function () {
      return _triggers[_triggers.indexOf(self) - 1];
    };

self.next = function () {
      return _triggers[_triggers.indexOf(self) + 1];
    };

self.revert = function (revert, temp) {
      if (!temp) {
        return self.kill(true);
      } // for compatibility with gsap.context() and gsap.matchMedia() which call revert()

var r = revert !== false || !self.enabled,
          prevRefreshing = _refreshing;

if (r !== self.isReverted) {
        if (r) {
          // if (!self.scroll.rec && (_refreshing || _refreshingAll)) {
          // 	self.scroll.rec = scrollFunc();
          // 	_refreshingAll && scrollFunc(0);
          // }
          prevScroll = Math.max(scrollFunc(), self.scroll.rec || 0); // record the scroll so we can revert later (repositioning/pinning things can affect scroll position). In the static refresh() method, we first record all the scroll positions as a reference.

prevProgress = self.progress;
          prevAnimProgress = animation && animation.progress();
        }

markerStart && [markerStart, markerEnd, markerStartTrigger, markerEndTrigger].forEach(function (m) {
          return m.style.display = r ? "none" : "block";
        });

if (r) {
          _refreshing = 1;
          self.update(r); // make sure the pin is back in its original position so that all the measurements are correct. do this BEFORE swapping the pin out
        }

if (pin && (!pinReparent || !self.isActive)) {
          if (r) {
            _swapPinOut(pin, spacer, pinOriginalState);
          } else {
            _swapPinIn(pin, spacer, _getComputedStyle(pin), spacerState);
          }
        }

r || self.update(r); // when we're restoring, the update should run AFTER swapping the pin into its pin-spacer.

_refreshing = prevRefreshing; // restore. We set it to true during the update() so that things fire properly in there.

self.isReverted = r;
      }
    };

self.refresh = function (soft, force) {
      if ((_refreshing || !self.enabled) && !force) {
        return;
      }

if (pin && soft && _lastScrollTime) {
        _addListener(ScrollTrigger, "scrollEnd", _softRefresh);

return;
      }

!_refreshingAll && onRefreshInit && onRefreshInit(self);
      _refreshing = 1;
      lastRefresh = _getTime();

if (tweenTo.tween) {
        tweenTo.tween.kill();
        tweenTo.tween = 0;
      }

scrubTween && scrubTween.pause();
      invalidateOnRefresh && animation && animation.revert({
        kill: false
      }).invalidate();
      self.isReverted || self.revert(true, true);
      self._subPinOffset = false; // we'll set this to true in the sub-pins if we find any

var size = getScrollerSize(),
          scrollerBounds = getScrollerOffsets(),
          max = containerAnimation ? containerAnimation.duration() : _maxScroll(scroller, direction),
          offset = 0,
          otherPinOffset = 0,
          parsedEnd = vars.end,
          parsedEndTrigger = vars.endTrigger || trigger,
          parsedStart = vars.start || (vars.start === 0 || !trigger ? 0 : pin ? "0 0" : "0 100%"),
          pinnedContainer = self.pinnedContainer = vars.pinnedContainer && (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(vars.pinnedContainer),
          triggerIndex = trigger && Math.max(0, _triggers.indexOf(self)) || 0,
          i = triggerIndex,
          cs,
          bounds,
          scroll,
          isVertical,
          override,
          curTrigger,
          curPin,
          oppositeScroll,
          initted,
          revertedPins,
          forcedOverflow;

while (i--) {
        // user might try to pin the same element more than once, so we must find any prior triggers with the same pin, revert them, and determine how long they're pinning so that we can offset things appropriately. Make sure we revert from last to first so that things "rewind" properly.
        curTrigger = _triggers[i];
        curTrigger.end || curTrigger.refresh(0, 1) || (_refreshing = 1); // if it's a timeline-based trigger that hasn't been fully initialized yet because it's waiting for 1 tick, just force the refresh() here, otherwise if it contains a pin that's supposed to affect other ScrollTriggers further down the page, they won't be adjusted properly.

curPin = curTrigger.pin;

if (curPin && (curPin === trigger || curPin === pin) && !curTrigger.isReverted) {
          revertedPins || (revertedPins = []);
          revertedPins.unshift(curTrigger); // we'll revert from first to last to make sure things reach their end state properly

curTrigger.revert(true, true);
        }

if (curTrigger !== _triggers[i]) {
          // in case it got removed.
          triggerIndex--;
          i--;
        }
      }

_isFunction(parsedStart) && (parsedStart = parsedStart(self));
      start = _parsePosition(parsedStart, trigger, size, direction, scrollFunc(), markerStart, markerStartTrigger, self, scrollerBounds, borderWidth, useFixedPosition, max, containerAnimation) || (pin ? -0.001 : 0);
      _isFunction(parsedEnd) && (parsedEnd = parsedEnd(self));

if (_isString(parsedEnd) && !parsedEnd.indexOf("+=")) {
        if (~parsedEnd.indexOf(" ")) {
          parsedEnd = (_isString(parsedStart) ? parsedStart.split(" ")[0] : "") + parsedEnd;
        } else {
          offset = _offsetToPx(parsedEnd.substr(2), size);
          parsedEnd = _isString(parsedStart) ? parsedStart : start + offset; // _parsePosition won't factor in the offset if the start is a number, so do it here.

parsedEndTrigger = trigger;
        }
      }

end = Math.max(start, _parsePosition(parsedEnd || (parsedEndTrigger ? "100% 0" : max), parsedEndTrigger, size, direction, scrollFunc() + offset, markerEnd, markerEndTrigger, self, scrollerBounds, borderWidth, useFixedPosition, max, containerAnimation)) || -0.001;
      change = end - start || (start -= 0.01) && 0.001;
      offset = 0;
      i = triggerIndex;

while (i--) {
        curTrigger = _triggers[i];
        curPin = curTrigger.pin;

if (curPin && curTrigger.start - curTrigger._pinPush <= start && !containerAnimation && curTrigger.end > 0) {
          cs = curTrigger.end - curTrigger.start;

if ((curPin === trigger && curTrigger.start - curTrigger._pinPush < start || curPin === pinnedContainer) && !_isNumber(parsedStart)) {
            // numeric start values shouldn't be offset at all - treat them as absolute
            offset += cs * (1 - curTrigger.progress);
          }

curPin === pin && (otherPinOffset += cs);
        }
      }

start += offset;
      end += offset;
      self._pinPush = otherPinOffset;

if (markerStart && offset) {
        // offset the markers if necessary
        cs = {};
        cs[direction.a] = "+=" + offset;
        pinnedContainer && (cs[direction.p] = "-=" + scrollFunc());
        gsap.set([markerStart, markerEnd], cs);
      }

if (pin) {
        cs = _getComputedStyle(pin);
        isVertical = direction === _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical;
        scroll = scrollFunc(); // recalculate because the triggers can affect the scroll

pinStart = parseFloat(pinGetter(direction.a)) + otherPinOffset;

if (!max && end > 1) {
          // makes sure the scroller has a scrollbar, otherwise if something has width: 100%, for example, it would be too big (exclude the scrollbar). See https://greensock.com/forums/topic/25182-scrolltrigger-width-of-page-increase-where-markers-are-set-to-false/
          forcedOverflow = (isViewport ? _doc.scrollingElement || _docEl : scroller).style;
          forcedOverflow = {
            style: forcedOverflow,
            value: forcedOverflow["overflow" + direction.a.toUpperCase()]
          };
          forcedOverflow["overflow" + direction.a.toUpperCase()] = "scroll";
        }

_swapPinIn(pin, spacer, cs);

pinState = _getState(pin); // transforms will interfere with the top/left/right/bottom placement, so remove them temporarily. getBoundingClientRect() factors in transforms.

bounds = _getBounds(pin, true);
        oppositeScroll = useFixedPosition && (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getScrollFunc)(scroller, isVertical ? _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal : _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical)();

if (pinSpacing) {
          spacerState = [pinSpacing + direction.os2, change + otherPinOffset + _px];
          spacerState.t = spacer;
          i = pinSpacing === _padding ? _getSize(pin, direction) + change + otherPinOffset : 0;
          i && spacerState.push(direction.d, i + _px); // for box-sizing: border-box (must include padding).

_setState(spacerState);

if (pinnedContainer) {
            // in ScrollTrigger.refresh(), we need to re-evaluate the pinContainer's size because this pinSpacing may stretch it out, but we can't just add the exact distance because depending on layout, it may not push things down or it may only do so partially.
            _triggers.forEach(function (t) {
              if (t.pin === pinnedContainer && t.vars.pinSpacing !== false) {
                t._subPinOffset = true;
              }
            });
          }

useFixedPosition && scrollFunc(prevScroll);
        }

if (useFixedPosition) {
          override = {
            top: bounds.top + (isVertical ? scroll - start : oppositeScroll) + _px,
            left: bounds.left + (isVertical ? oppositeScroll : scroll - start) + _px,
            boxSizing: "border-box",
            position: "fixed"
          };
          override[_width] = override["max" + _Width] = Math.ceil(bounds.width) + _px;
          override[_height] = override["max" + _Height] = Math.ceil(bounds.height) + _px;
          override[_margin] = override[_margin + _Top] = override[_margin + _Right] = override[_margin + _Bottom] = override[_margin + _Left] = "0";
          override[_padding] = cs[_padding];
          override[_padding + _Top] = cs[_padding + _Top];
          override[_padding + _Right] = cs[_padding + _Right];
          override[_padding + _Bottom] = cs[_padding + _Bottom];
          override[_padding + _Left] = cs[_padding + _Left];
          pinActiveState = _copyState(pinOriginalState, override, pinReparent);
          _refreshingAll && scrollFunc(0);
        }

if (animation) {
          // the animation might be affecting the transform, so we must jump to the end, check the value, and compensate accordingly. Otherwise, when it becomes unpinned, the pinSetter() will get set to a value that doesn't include whatever the animation did.
          initted = animation._initted; // if not, we must invalidate() after this step, otherwise it could lock in starting values prematurely.

_suppressOverwrites(1);

animation.render(animation.duration(), true, true);
          pinChange = pinGetter(direction.a) - pinStart + change + otherPinOffset;
          pinMoves = Math.abs(change - pinChange) > 1;
          useFixedPosition && pinMoves && pinActiveState.splice(pinActiveState.length - 2, 2); // transform is the last property/value set in the state Array. Since the animation is controlling that, we should omit it.

animation.render(0, true, true);
          initted || animation.invalidate(true);
          animation.parent || animation.totalTime(animation.totalTime()); // if, for example, a toggleAction called play() and then refresh() happens and when we render(1) above, it would cause the animation to complete and get removed from its parent, so this makes sure it gets put back in.

_suppressOverwrites(0);
        } else {
          pinChange = change;
        }

forcedOverflow && (forcedOverflow.value ? forcedOverflow.style["overflow" + direction.a.toUpperCase()] = forcedOverflow.value : forcedOverflow.style.removeProperty("overflow-" + direction.a));
      } else if (trigger && scrollFunc() && !containerAnimation) {
        // it may be INSIDE a pinned element, so walk up the tree and look for any elements with _pinOffset to compensate because anything with pinSpacing that's already scrolled would throw off the measurements in getBoundingClientRect()
        bounds = trigger.parentNode;

while (bounds && bounds !== _body) {
          if (bounds._pinOffset) {
            start -= bounds._pinOffset;
            end -= bounds._pinOffset;
          }

bounds = bounds.parentNode;
        }
      }

revertedPins && revertedPins.forEach(function (t) {
        return t.revert(false, true);
      });
      self.start = start;
      self.end = end;
      scroll1 = scroll2 = _refreshingAll ? prevScroll : scrollFunc(); // reset velocity

if (!containerAnimation && !_refreshingAll) {
        scroll1 < prevScroll && scrollFunc(prevScroll);
        self.scroll.rec = 0;
      }

self.revert(false, true);

if (snapDelayedCall) {
        lastSnap = -1;
        self.isActive && scrollFunc(start + change * prevProgress); // just so snapping gets re-enabled, clear out any recorded last value

snapDelayedCall.restart(true);
      }

_refreshing = 0;
      animation && isToggle && (animation._initted || prevAnimProgress) && animation.progress() !== prevAnimProgress && animation.progress(prevAnimProgress, true).render(animation.time(), true, true); // must force a re-render because if saveStyles() was used on the target(s), the styles could have been wiped out during the refresh().

if (prevProgress !== self.progress || containerAnimation) {
        // ensures that the direction is set properly (when refreshing, progress is set back to 0 initially, then back again to wherever it needs to be) and that callbacks are triggered.
        animation && !isToggle && animation.totalProgress(prevProgress, true); // to avoid issues where animation callbacks like onStart aren't triggered.

self.progress = (scroll1 - start) / change === prevProgress ? 0 : prevProgress;
      }

pin && pinSpacing && (spacer._pinOffset = Math.round(self.progress * pinChange)); //			scrubTween && scrubTween.invalidate();

onRefresh && !_refreshingAll && onRefresh(self); // when refreshing all, we do extra work to correct pinnedContainer sizes and ensure things don't exceed the maxScroll, so we should do all the refreshes at the end after all that work so that the start/end values are corrected.
    };

self.getVelocity = function () {
      return (scrollFunc() - scroll2) / (_getTime() - _time2) * 1000 || 0;
    };

self.endAnimation = function () {
      _endAnimation(self.callbackAnimation);

if (animation) {
        scrubTween ? scrubTween.progress(1) : !animation.paused() ? _endAnimation(animation, animation.reversed()) : isToggle || _endAnimation(animation, self.direction < 0, 1);
      }
    };

self.labelToScroll = function (label) {
      return animation && animation.labels && (start || self.refresh() || start) + animation.labels[label] / animation.duration() * change || 0;
    };

self.getTrailing = function (name) {
      var i = _triggers.indexOf(self),
          a = self.direction > 0 ? _triggers.slice(0, i).reverse() : _triggers.slice(i + 1);

return (_isString(name) ? a.filter(function (t) {
        return t.vars.preventOverlaps === name;
      }) : a).filter(function (t) {
        return self.direction > 0 ? t.end <= start : t.start >= end;
      });
    };

self.update = function (reset, recordVelocity, forceFake) {
      if (containerAnimation && !forceFake && !reset) {
        return;
      }

var scroll = _refreshingAll ? prevScroll : self.scroll(),
          p = reset ? 0 : (scroll - start) / change,
          clipped = p < 0 ? 0 : p > 1 ? 1 : p || 0,
          prevProgress = self.progress,
          isActive,
          wasActive,
          toggleState,
          action,
          stateChanged,
          toggled,
          isAtMax,
          isTakingAction;

if (recordVelocity) {
        scroll2 = scroll1;
        scroll1 = containerAnimation ? scrollFunc() : scroll;

if (snap) {
          snap2 = snap1;
          snap1 = animation && !isToggle ? animation.totalProgress() : clipped;
        }
      } // anticipate the pinning a few ticks ahead of time based on velocity to avoid a visual glitch due to the fact that most browsers do scrolling on a separate thread (not synced with requestAnimationFrame).

anticipatePin && !clipped && pin && !_refreshing && !_startup && _lastScrollTime && start < scroll + (scroll - scroll2) / (_getTime() - _time2) * anticipatePin && (clipped = 0.0001);

if (clipped !== prevProgress && self.enabled) {
        isActive = self.isActive = !!clipped && clipped < 1;
        wasActive = !!prevProgress && prevProgress < 1;
        toggled = isActive !== wasActive;
        stateChanged = toggled || !!clipped !== !!prevProgress; // could go from start all the way to end, thus it didn't toggle but it did change state in a sense (may need to fire a callback)

self.direction = clipped > prevProgress ? 1 : -1;
        self.progress = clipped;

if (stateChanged && !_refreshing) {
          toggleState = clipped && !prevProgress ? 0 : clipped === 1 ? 1 : prevProgress === 1 ? 2 : 3; // 0 = enter, 1 = leave, 2 = enterBack, 3 = leaveBack (we prioritize the FIRST encounter, thus if you scroll really fast past the onEnter and onLeave in one tick, it'd prioritize onEnter.

if (isToggle) {
            action = !toggled && toggleActions[toggleState + 1] !== "none" && toggleActions[toggleState + 1] || toggleActions[toggleState]; // if it didn't toggle, that means it shot right past and since we prioritize the "enter" action, we should switch to the "leave" in this case (but only if one is defined)

isTakingAction = animation && (action === "complete" || action === "reset" || action in animation);
          }
        }

preventOverlaps && (toggled || isTakingAction) && (isTakingAction || scrub || !animation) && (_isFunction(preventOverlaps) ? preventOverlaps(self) : self.getTrailing(preventOverlaps).forEach(function (t) {
          return t.endAnimation();
        }));

if (!isToggle) {
          if (scrubTween && !_refreshing && !_startup) {
            scrubTween._dp._time - scrubTween._start !== scrubTween._time && scrubTween.render(scrubTween._dp._time - scrubTween._start); // if there's a scrub on both the container animation and this one (or a ScrollSmoother), the update order would cause this one not to have rendered yet, so it wouldn't make any progress before we .restart() it heading toward the new progress so it'd appear stuck thus we force a render here.

if (scrubTween.resetTo) {
              scrubTween.resetTo("totalProgress", clipped, animation._tTime / animation._tDur);
            } else {
              // legacy support (courtesy), before 3.10.0
              scrubTween.vars.totalProgress = clipped;
              scrubTween.invalidate().restart();
            }
          } else if (animation) {
            animation.totalProgress(clipped, !!_refreshing);
          }
        }

if (pin) {
          reset && pinSpacing && (spacer.style[pinSpacing + direction.os2] = spacingStart);

if (!useFixedPosition) {
            pinSetter(_round(pinStart + pinChange * clipped));
          } else if (stateChanged) {
            isAtMax = !reset && clipped > prevProgress && end + 1 > scroll && scroll + 1 >= _maxScroll(scroller, direction); // if it's at the VERY end of the page, don't switch away from position: fixed because it's pointless and it could cause a brief flash when the user scrolls back up (when it gets pinned again)

if (pinReparent) {
              if (!reset && (isActive || isAtMax)) {
                var bounds = _getBounds(pin, true),
                    _offset = scroll - start;

_reparent(pin, _body, bounds.top + (direction === _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical ? _offset : 0) + _px, bounds.left + (direction === _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical ? 0 : _offset) + _px);
              } else {
                _reparent(pin, spacer);
              }
            }

_setState(isActive || isAtMax ? pinActiveState : pinState);

pinMoves && clipped < 1 && isActive || pinSetter(pinStart + (clipped === 1 && !isAtMax ? pinChange : 0));
          }
        }

snap && !tweenTo.tween && !_refreshing && !_startup && snapDelayedCall.restart(true);
        toggleClass && (toggled || once && clipped && (clipped < 1 || !_limitCallbacks)) && _toArray(toggleClass.targets).forEach(function (el) {
          return el.classList[isActive || once ? "add" : "remove"](toggleClass.className);
        }); // classes could affect positioning, so do it even if reset or refreshing is true.

onUpdate && !isToggle && !reset && onUpdate(self);

if (stateChanged && !_refreshing) {
          if (isToggle) {
            if (isTakingAction) {
              if (action === "complete") {
                animation.pause().totalProgress(1);
              } else if (action === "reset") {
                animation.restart(true).pause();
              } else if (action === "restart") {
                animation.restart(true);
              } else {
                animation[action]();
              }
            }

onUpdate && onUpdate(self);
          }

if (toggled || !_limitCallbacks) {
            // on startup, the page could be scrolled and we don't want to fire callbacks that didn't toggle. For example onEnter shouldn't fire if the ScrollTrigger isn't actually entered.
            onToggle && toggled && _callback(self, onToggle);
            callbacks[toggleState] && _callback(self, callbacks[toggleState]);
            once && (clipped === 1 ? self.kill(false, 1) : callbacks[toggleState] = 0); // a callback shouldn't be called again if once is true.

if (!toggled) {
              // it's possible to go completely past, like from before the start to after the end (or vice-versa) in which case BOTH callbacks should be fired in that order
              toggleState = clipped === 1 ? 1 : 3;
              callbacks[toggleState] && _callback(self, callbacks[toggleState]);
            }
          }

if (fastScrollEnd && !isActive && Math.abs(self.getVelocity()) > (_isNumber(fastScrollEnd) ? fastScrollEnd : 2500)) {
            _endAnimation(self.callbackAnimation);

scrubTween ? scrubTween.progress(1) : _endAnimation(animation, action === "reverse" ? 1 : !clipped, 1);
          }
        } else if (isToggle && onUpdate && !_refreshing) {
          onUpdate(self);
        }
      } // update absolutely-positioned markers (only if the scroller isn't the viewport)

if (markerEndSetter) {
        var n = containerAnimation ? scroll / containerAnimation.duration() * (containerAnimation._caScrollDist || 0) : scroll;
        markerStartSetter(n + (markerStartTrigger._isFlipped ? 1 : 0));
        markerEndSetter(n);
      }

caMarkerSetter && caMarkerSetter(-scroll / containerAnimation.duration() * (containerAnimation._caScrollDist || 0));
    };

self.enable = function (reset, refresh) {
      if (!self.enabled) {
        self.enabled = true;

_addListener(scroller, "resize", _onResize);

_addListener(isViewport ? _doc : scroller, "scroll", _onScroll);

onRefreshInit && _addListener(ScrollTrigger, "refreshInit", onRefreshInit);

if (reset !== false) {
          self.progress = prevProgress = 0;
          scroll1 = scroll2 = lastSnap = scrollFunc();
        }

refresh !== false && self.refresh();
      }
    };

self.getTween = function (snap) {
      return snap && tweenTo ? tweenTo.tween : scrubTween;
    };

self.setPositions = function (newStart, newEnd) {
      // doesn't persist after refresh()! Intended to be a way to override values that were set during refresh(), like you could set it in onRefresh()
      if (pin) {
        pinStart += newStart - start;
        pinChange += newEnd - newStart - change;
        pinSpacing === _padding && self.adjustPinSpacing(newEnd - newStart - change);
      }

self.start = start = newStart;
      self.end = end = newEnd;
      change = newEnd - newStart;
      self.update();
    };

self.adjustPinSpacing = function (amount) {
      if (spacerState) {
        var i = spacerState.indexOf(direction.d) + 1;
        spacerState[i] = parseFloat(spacerState[i]) + amount + _px;
        spacerState[1] = parseFloat(spacerState[1]) + amount + _px;

_setState(spacerState);
      }
    };

self.disable = function (reset, allowAnimation) {
      if (self.enabled) {
        reset !== false && self.revert(true, true);
        self.enabled = self.isActive = false;
        allowAnimation || scrubTween && scrubTween.pause();
        prevScroll = 0;
        pinCache && (pinCache.uncache = 1);
        onRefreshInit && _removeListener(ScrollTrigger, "refreshInit", onRefreshInit);

if (snapDelayedCall) {
          snapDelayedCall.pause();
          tweenTo.tween && tweenTo.tween.kill() && (tweenTo.tween = 0);
        }

if (!isViewport) {
          var i = _triggers.length;

while (i--) {
            if (_triggers[i].scroller === scroller && _triggers[i] !== self) {
              return; //don't remove the listeners if there are still other triggers referencing it.
            }
          }

_removeListener(scroller, "resize", _onResize);

_removeListener(scroller, "scroll", _onScroll);
        }
      }
    };

self.kill = function (revert, allowAnimation) {
      self.disable(revert, allowAnimation);
      scrubTween && !allowAnimation && scrubTween.kill();
      id && delete _ids[id];

var i = _triggers.indexOf(self);

i >= 0 && _triggers.splice(i, 1);
      i === _i && _direction > 0 && _i--; // if we're in the middle of a refresh() or update(), splicing would cause skips in the index, so adjust...
      // if no other ScrollTrigger instances of the same scroller are found, wipe out any recorded scroll position. Otherwise, in a single page application, for example, it could maintain scroll position when it really shouldn't.

i = 0;

_triggers.forEach(function (t) {
        return t.scroller === self.scroller && (i = 1);
      });

i || _refreshingAll || (self.scroll.rec = 0);

if (animation) {
        animation.scrollTrigger = null;
        revert && animation.revert({
          kill: false
        });
        allowAnimation || animation.kill();
      }

markerStart && [markerStart, markerEnd, markerStartTrigger, markerEndTrigger].forEach(function (m) {
        return m.parentNode && m.parentNode.removeChild(m);
      });
      _primary === self && (_primary = 0);

if (pin) {
        pinCache && (pinCache.uncache = 1);
        i = 0;

_triggers.forEach(function (t) {
          return t.pin === pin && i++;
        });

i || (pinCache.spacer = 0); // if there aren't any more ScrollTriggers with the same pin, remove the spacer, otherwise it could be contaminated with old/stale values if the user re-creates a ScrollTrigger for the same element.
      }

vars.onKill && vars.onKill(self);
    };

self.enable(false, false);
    customRevertReturn && customRevertReturn(self);
    !animation || !animation.add || change ? self.refresh() : gsap.delayedCall(0.01, function () {
      return start || end || self.refresh();
    }) && (change = 0.01) && (start = end = 0); // if the animation is a timeline, it may not have been populated yet, so it wouldn't render at the proper place on the first refresh(), thus we should schedule one for the next tick. If "change" is defined, we know it must be re-enabling, thus we can refresh() right away.

pin && _queueRefreshAll(); // pinning could affect the positions of other things, so make sure we queue a full refresh()
  };

ScrollTrigger.register = function register(core) {
    if (!_coreInitted) {
      gsap = core || _getGSAP();
      _windowExists() && window.document && ScrollTrigger.enable();
      _coreInitted = _enabled;
    }

return _coreInitted;
  };

ScrollTrigger.defaults = function defaults(config) {
    if (config) {
      for (var p in config) {
        _defaults[p] = config[p];
      }
    }

return _defaults;
  };

ScrollTrigger.disable = function disable(reset, kill) {
    _enabled = 0;

_triggers.forEach(function (trigger) {
      return trigger[kill ? "kill" : "disable"](reset);
    });

_removeListener(_win, "wheel", _onScroll);

_removeListener(_doc, "scroll", _onScroll);

clearInterval(_syncInterval);

_removeListener(_doc, "touchcancel", _passThrough);

_removeListener(_body, "touchstart", _passThrough);

_multiListener(_removeListener, _doc, "pointerdown,touchstart,mousedown", _pointerDownHandler);

_multiListener(_removeListener, _doc, "pointerup,touchend,mouseup", _pointerUpHandler);

_resizeDelay.kill();

_iterateAutoRefresh(_removeListener);

for (var i = 0; i < _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.length; i += 3) {
      _wheelListener(_removeListener, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i], _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i + 1]);

_wheelListener(_removeListener, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i], _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i + 2]);
    }
  };

ScrollTrigger.enable = function enable() {
    _win = window;
    _doc = document;
    _docEl = _doc.documentElement;
    _body = _doc.body;

if (gsap) {
      _toArray = gsap.utils.toArray;
      _clamp = gsap.utils.clamp;
      _context = gsap.core.context || _passThrough;
      _suppressOverwrites = gsap.core.suppressOverwrites || _passThrough;
      _scrollRestoration = _win.history.scrollRestoration || "auto";
      gsap.core.globals("ScrollTrigger", ScrollTrigger); // must register the global manually because in Internet Explorer, functions (classes) don't have a "name" property.

if (_body) {
        _enabled = 1;
        _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.register(gsap); // isTouch is 0 if no touch, 1 if ONLY touch, and 2 if it can accommodate touch but also other types like mouse/pointer.

ScrollTrigger.isTouch = _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.isTouch;
        _fixIOSBug = _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.isTouch && /(iPad|iPhone|iPod|Mac)/g.test(navigator.userAgent); // since 2017, iOS has had a bug that causes event.clientX/Y to be inaccurate when a scroll occurs, thus we must alternate ignoring every other touchmove event to work around it. See https://bugs.webkit.org/show_bug.cgi?id=181954 and https://codepen.io/GreenSock/pen/ExbrPNa/087cef197dc35445a0951e8935c41503

_addListener(_win, "wheel", _onScroll); // mostly for 3rd party smooth scrolling libraries.

_root = [_win, _doc, _docEl, _body];

if (gsap.matchMedia) {
          ScrollTrigger.matchMedia = function (vars) {
            var mm = gsap.matchMedia(),
                p;

for (p in vars) {
              mm.add(p, vars[p]);
            }

return mm;
          };

gsap.addEventListener("matchMediaInit", function () {
            return _revertAll();
          });
          gsap.addEventListener("matchMediaRevert", function () {
            return _revertRecorded();
          });
          gsap.addEventListener("matchMedia", function () {
            _refreshAll(0, 1);

_dispatch("matchMedia");
          });
          gsap.matchMedia("(orientation: portrait)", function () {
            // when orientation changes, we should take new base measurements for the ignoreMobileResize feature.
            _setBaseDimensions();

return _setBaseDimensions;
          });
        } else {
          console.warn("Requires GSAP 3.11.0 or later");
        }

_setBaseDimensions();

_addListener(_doc, "scroll", _onScroll); // some browsers (like Chrome), the window stops dispatching scroll events on the window if you scroll really fast, but it's consistent on the document!

var bodyStyle = _body.style,
            border = bodyStyle.borderTopStyle,
            AnimationProto = gsap.core.Animation.prototype,
            bounds,
            i;
        AnimationProto.revert || Object.defineProperty(AnimationProto, "revert", {
          value: function value() {
            return this.time(-0.01, true);
          }
        }); // only for backwards compatibility (Animation.revert() was added after 3.10.4)

bodyStyle.borderTopStyle = "solid"; // works around an issue where a margin of a child element could throw off the bounds of the _body, making it seem like there's a margin when there actually isn't. The border ensures that the bounds are accurate.

bounds = _getBounds(_body);
        _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical.m = Math.round(bounds.top + _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical.sc()) || 0; // accommodate the offset of the <body> caused by margins and/or padding

_Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal.m = Math.round(bounds.left + _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal.sc()) || 0;
        border ? bodyStyle.borderTopStyle = border : bodyStyle.removeProperty("border-top-style"); // TODO: (?) maybe move to leveraging the velocity mechanism in Observer and skip intervals.

_syncInterval = setInterval(_sync, 250);
        gsap.delayedCall(0.5, function () {
          return _startup = 0;
        });

_addListener(_doc, "touchcancel", _passThrough); // some older Android devices intermittently stop dispatching "touchmove" events if we don't listen for "touchcancel" on the document.

_addListener(_body, "touchstart", _passThrough); //works around Safari bug: https://greensock.com/forums/topic/21450-draggable-in-iframe-on-mobile-is-buggy/

_multiListener(_addListener, _doc, "pointerdown,touchstart,mousedown", _pointerDownHandler);

_multiListener(_addListener, _doc, "pointerup,touchend,mouseup", _pointerUpHandler);

_transformProp = gsap.utils.checkPrefix("transform");

_stateProps.push(_transformProp);

_coreInitted = _getTime();
        _resizeDelay = gsap.delayedCall(0.2, _refreshAll).pause();
        _autoRefresh = [_doc, "visibilitychange", function () {
          var w = _win.innerWidth,
              h = _win.innerHeight;

if (_doc.hidden) {
            _prevWidth = w;
            _prevHeight = h;
          } else if (_prevWidth !== w || _prevHeight !== h) {
            _onResize();
          }
        }, _doc, "DOMContentLoaded", _refreshAll, _win, "load", _refreshAll, _win, "resize", _onResize];

_iterateAutoRefresh(_addListener);

_triggers.forEach(function (trigger) {
          return trigger.enable(0, 1);
        });

for (i = 0; i < _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.length; i += 3) {
          _wheelListener(_removeListener, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i], _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i + 1]);

_wheelListener(_removeListener, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i], _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers[i + 2]);
        }
      }
    }
  };

ScrollTrigger.config = function config(vars) {
    "limitCallbacks" in vars && (_limitCallbacks = !!vars.limitCallbacks);
    var ms = vars.syncInterval;
    ms && clearInterval(_syncInterval) || (_syncInterval = ms) && setInterval(_sync, ms);
    "ignoreMobileResize" in vars && (_ignoreMobileResize = ScrollTrigger.isTouch === 1 && vars.ignoreMobileResize);

if ("autoRefreshEvents" in vars) {
      _iterateAutoRefresh(_removeListener) || _iterateAutoRefresh(_addListener, vars.autoRefreshEvents || "none");
      _ignoreResize = (vars.autoRefreshEvents + "").indexOf("resize") === -1;
    }
  };

ScrollTrigger.scrollerProxy = function scrollerProxy(target, vars) {
    var t = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(target),
        i = _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.indexOf(t),
        isViewport = _isViewport(t);

if (~i) {
      _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.splice(i, isViewport ? 6 : 2);
    }

if (vars) {
      isViewport ? _Observer_js__WEBPACK_IMPORTED_MODULE_0__._proxies.unshift(_win, vars, _body, vars, _docEl, vars) : _Observer_js__WEBPACK_IMPORTED_MODULE_0__._proxies.unshift(t, vars);
    }
  };

ScrollTrigger.clearMatchMedia = function clearMatchMedia(query) {
    _triggers.forEach(function (t) {
      return t._ctx && t._ctx.query === query && t._ctx.kill(true, true);
    });
  };

ScrollTrigger.isInViewport = function isInViewport(element, ratio, horizontal) {
    var bounds = (_isString(element) ? (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(element) : element).getBoundingClientRect(),
        offset = bounds[horizontal ? _width : _height] * ratio || 0;
    return horizontal ? bounds.right - offset > 0 && bounds.left + offset < _win.innerWidth : bounds.bottom - offset > 0 && bounds.top + offset < _win.innerHeight;
  };

ScrollTrigger.positionInViewport = function positionInViewport(element, referencePoint, horizontal) {
    _isString(element) && (element = (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(element));
    var bounds = element.getBoundingClientRect(),
        size = bounds[horizontal ? _width : _height],
        offset = referencePoint == null ? size / 2 : referencePoint in _keywords ? _keywords[referencePoint] * size : ~referencePoint.indexOf("%") ? parseFloat(referencePoint) * size / 100 : parseFloat(referencePoint) || 0;
    return horizontal ? (bounds.left + offset) / _win.innerWidth : (bounds.top + offset) / _win.innerHeight;
  };

ScrollTrigger.killAll = function killAll(allowListeners) {
    _triggers.slice(0).forEach(function (t) {
      return t.vars.id !== "ScrollSmoother" && t.kill();
    });

if (allowListeners !== true) {
      var listeners = _listeners.killAll || [];
      _listeners = {};
      listeners.forEach(function (f) {
        return f();
      });
    }
  };

return ScrollTrigger;
}();
ScrollTrigger.version = "3.11.4";

ScrollTrigger.saveStyles = function (targets) {
  return targets ? _toArray(targets).forEach(function (target) {
    // saved styles are recorded in a consecutive alternating Array, like [element, cssText, transform attribute, cache, matchMedia, ...]
    if (target && target.style) {
      var i = _savedStyles.indexOf(target);

i >= 0 && _savedStyles.splice(i, 5);

_savedStyles.push(target, target.style.cssText, target.getBBox && target.getAttribute("transform"), gsap.core.getCache(target), _context());
    }
  }) : _savedStyles;
};

ScrollTrigger.revert = function (soft, media) {
  return _revertAll(!soft, media);
};

ScrollTrigger.create = function (vars, animation) {
  return new ScrollTrigger(vars, animation);
};

ScrollTrigger.refresh = function (safe) {
  return safe ? _onResize() : (_coreInitted || ScrollTrigger.register()) && _refreshAll(true);
};

ScrollTrigger.update = function (force) {
  return ++_Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache && _updateAll(force === true ? 2 : 0);
};

ScrollTrigger.clearScrollMemory = _clearScrollMemory;

ScrollTrigger.maxScroll = function (element, horizontal) {
  return _maxScroll(element, horizontal ? _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal : _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical);
};

ScrollTrigger.getScrollFunc = function (element, horizontal) {
  return (0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getScrollFunc)((0,_Observer_js__WEBPACK_IMPORTED_MODULE_0__._getTarget)(element), horizontal ? _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal : _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical);
};

ScrollTrigger.getById = function (id) {
  return _ids[id];
};

ScrollTrigger.getAll = function () {
  return _triggers.filter(function (t) {
    return t.vars.id !== "ScrollSmoother";
  });
}; // it's common for people to ScrollTrigger.getAll(t => t.kill()) on page routes, for example, and we don't want it to ruin smooth scrolling by killing the main ScrollSmoother one.

ScrollTrigger.isScrolling = function () {
  return !!_lastScrollTime;
};

ScrollTrigger.snapDirectional = _snapDirectional;

ScrollTrigger.addEventListener = function (type, callback) {
  var a = _listeners[type] || (_listeners[type] = []);
  ~a.indexOf(callback) || a.push(callback);
};

ScrollTrigger.removeEventListener = function (type, callback) {
  var a = _listeners[type],
      i = a && a.indexOf(callback);
  i >= 0 && a.splice(i, 1);
};

ScrollTrigger.batch = function (targets, vars) {
  var result = [],
      varsCopy = {},
      interval = vars.interval || 0.016,
      batchMax = vars.batchMax || 1e9,
      proxyCallback = function proxyCallback(type, callback) {
    var elements = [],
        triggers = [],
        delay = gsap.delayedCall(interval, function () {
      callback(elements, triggers);
      elements = [];
      triggers = [];
    }).pause();
    return function (self) {
      elements.length || delay.restart(true);
      elements.push(self.trigger);
      triggers.push(self);
      batchMax <= elements.length && delay.progress(1);
    };
  },
      p;

for (p in vars) {
    varsCopy[p] = p.substr(0, 2) === "on" && _isFunction(vars[p]) && p !== "onRefreshInit" ? proxyCallback(p, vars[p]) : vars[p];
  }

if (_isFunction(batchMax)) {
    batchMax = batchMax();

_addListener(ScrollTrigger, "refresh", function () {
      return batchMax = vars.batchMax();
    });
  }

_toArray(targets).forEach(function (target) {
    var config = {};

for (p in varsCopy) {
      config[p] = varsCopy[p];
    }

config.trigger = target;
    result.push(ScrollTrigger.create(config));
  });

return result;
}; // to reduce file size. clamps the scroll and also returns a duration multiplier so that if the scroll gets chopped shorter, the duration gets curtailed as well (otherwise if you're very close to the top of the page, for example, and swipe up really fast, it'll suddenly slow down and take a long time to reach the top).

target === _docEl && _allowNativePanning(_body, direction);
},
    _overflow = {
  auto: 1,
  scroll: 1
},
    _nestedScroll = function _nestedScroll(_ref5) {
  var event = _ref5.event,
      target = _ref5.target,
      axis = _ref5.axis;

var node = (event.changedTouches ? event.changedTouches[0] : event).target,
      cache = node._gsap || gsap.core.getCache(node),
      time = _getTime(),
      cs;

if (!cache._isScrollT || time - cache._isScrollT > 2000) {
    // cache for 2 seconds to improve performance.
    while (node && node !== _body && (node.scrollHeight <= node.clientHeight && node.scrollWidth <= node.clientWidth || !(_overflow[(cs = _getComputedStyle(node)).overflowY] || _overflow[cs.overflowX]))) {
      node = node.parentNode;
    }

cache._isScroll = node && node !== target && !_isViewport(node) && (_overflow[(cs = _getComputedStyle(node)).overflowY] || _overflow[cs.overflowX]);
    cache._isScrollT = time;
  }

if (cache._isScroll || axis === "x") {
    event.stopPropagation();
    event._gsapAllow = true;
  }
},
    // capture events on scrollable elements INSIDE the <body> and allow those by calling stopPropagation() when we find a scrollable ancestor
_inputObserver = function _inputObserver(target, type, inputs, nested) {
  return _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.create({
    target: target,
    capture: true,
    debounce: false,
    lockAxis: true,
    type: type,
    onWheel: nested = nested && _nestedScroll,
    onPress: nested,
    onDrag: nested,
    onScroll: nested,
    onEnable: function onEnable() {
      return inputs && _addListener(_doc, _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.eventTypes[0], _captureInputs, false, true);
    },
    onDisable: function onDisable() {
      return _removeListener(_doc, _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer.eventTypes[0], _captureInputs, true);
    }
  });
},
    _inputExp = /(input|label|select|textarea)/i,
    _inputIsFocused,
    _captureInputs = function _captureInputs(e) {
  var isInput = _inputExp.test(e.target.tagName);

if (isInput || _inputIsFocused) {
    e._gsapAllow = true;
    _inputIsFocused = isInput;
  }
},
    _getScrollNormalizer = function _getScrollNormalizer(vars) {
  _isObject(vars) || (vars = {});
  vars.preventDefault = vars.isNormalizer = vars.allowClicks = true;
  vars.type || (vars.type = "wheel,touch");
  vars.debounce = !!vars.debounce;
  vars.id = vars.id || "normalizer";

var offset = _round(self.deltaY / 2),
          scroll = scrollClampY(scrollFuncY.v - offset);

if (content && scroll !== scrollFuncY.v + scrollFuncY.offset) {
        scrollFuncY.offset = scroll - scrollFuncY.v;

var y = _round((parseFloat(content && content._gsap.y) || 0) - scrollFuncY.offset);

content.style.transform = "matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, " + y + ", 0, 1)";
        content._gsap.y = y + "px";
        scrollFuncY.cacheID = _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache;

_updateAll();
      }

return true;
    }

scrollFuncY.offset && removeContentOffset();
    skipTouchMove = true;
  },
      tween,
      startScrollX,
      startScrollY,
      onStopDelayedCall,
      onResize = function onResize() {
    // if the window resizes, like on an iPhone which Apple FORCES the address bar to show/hide even if we event.preventDefault(), it may be scrolling too far now that the address bar is showing, so we must dynamically adjust the momentum tween.
    updateClamps();

if (tween.isActive() && tween.vars.scrollY > maxY) {
      scrollFuncY() > maxY ? tween.progress(1) && scrollFuncY(maxY) : tween.resetTo("scrollY", maxY);
    }
  };

content && gsap.set(content, {
    y: "+=0"
  }); // to ensure there's a cache (element._gsap)

vars.ignoreCheck = function (e) {
    return _fixIOSBug && e.type === "touchmove" && ignoreDrag(e) || scale > 1.05 && e.type !== "touchstart" || self.isGesturing || e.touches && e.touches.length > 1;
  };

vars.onPress = function () {
    var prevScale = scale;
    scale = _round((_win.visualViewport && _win.visualViewport.scale || 1) / initialScale);
    tween.pause();
    prevScale !== scale && _allowNativePanning(target, scale > 1.01 ? true : normalizeScrollX ? false : "x");
    startScrollX = scrollFuncX();
    startScrollY = scrollFuncY();
    updateClamps();
    lastRefreshID = _refreshID;
  };

vars.onRelease = vars.onGestureStart = function (self, wasDragging) {
    scrollFuncY.offset && removeContentOffset();

if (!wasDragging) {
      onStopDelayedCall.restart(true);
    } else {
      _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers.cache++; // make sure we're pulling the non-cached value
      // alternate algorithm: durX = Math.min(6, Math.abs(self.velocityX / 800)),	dur = Math.max(durX, Math.min(6, Math.abs(self.velocityY / 800))); dur = dur * (0.4 + (1 - _power4In(dur / 6)) * 0.6)) * (momentumSpeed || 1)

var dur = resolveMomentumDuration(),
          currentScroll,
          endScroll;

if (normalizeScrollX) {
        currentScroll = scrollFuncX();
        endScroll = currentScroll + dur * 0.05 * -self.velocityX / 0.227; // the constant .227 is from power4(0.05). velocity is inverted because scrolling goes in the opposite direction.

dur *= _clampScrollAndGetDurationMultiplier(scrollFuncX, currentScroll, endScroll, _maxScroll(target, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._horizontal));
        tween.vars.scrollX = scrollClampX(endScroll);
      }

currentScroll = scrollFuncY();
      endScroll = currentScroll + dur * 0.05 * -self.velocityY / 0.227; // the constant .227 is from power4(0.05)

dur *= _clampScrollAndGetDurationMultiplier(scrollFuncY, currentScroll, endScroll, _maxScroll(target, _Observer_js__WEBPACK_IMPORTED_MODULE_0__._vertical));
      tween.vars.scrollY = scrollClampY(endScroll);
      tween.invalidate().duration(dur).play(0.01);

if (_fixIOSBug && tween.vars.scrollY >= maxY || currentScroll >= maxY - 1) {
        // iOS bug: it'll show the address bar but NOT fire the window "resize" event until the animation is done but we must protect against overshoot so we leverage an onUpdate to do so.
        gsap.to({}, {
          onUpdate: onResize,
          duration: dur
        });
      }
    }
  };

vars.onWheel = function () {
    tween._ts && tween.pause();

if (_getTime() - wheelRefresh > 1000) {
      // after 1 second, refresh the clamps otherwise that'll only happen when ScrollTrigger.refresh() is called or for touch-scrolling.
      lastRefreshID = 0;
      wheelRefresh = _getTime();
    }
  };

vars.onChange = function (self, dx, dy, xArray, yArray) {
    _refreshID !== lastRefreshID && updateClamps();
    dx && normalizeScrollX && scrollFuncX(scrollClampX(xArray[2] === dx ? startScrollX + (self.startX - self.x) : scrollFuncX() + dx - xArray[1])); // for more precision, we track pointer/touch movement from the start, otherwise it'll drift.

if (dy) {
      scrollFuncY.offset && removeContentOffset();
      var isTouch = yArray[2] === dy,
          y = isTouch ? startScrollY + self.startY - self.y : scrollFuncY() + dy - yArray[1],
          yClamped = scrollClampY(y);
      isTouch && y !== yClamped && (startScrollY += yClamped - y);
      scrollFuncY(yClamped);
    }

(dy || dx) && _updateAll();
  };

vars.onEnable = function () {
    _allowNativePanning(target, normalizeScrollX ? false : "x");

ScrollTrigger.addEventListener("refresh", onResize);

_addListener(_win, "resize", onResize);

if (scrollFuncY.smooth) {
      scrollFuncY.target.style.scrollBehavior = "auto";
      scrollFuncY.smooth = scrollFuncX.smooth = false;
    }

inputObserver.enable();
  };

vars.onDisable = function () {
    _allowNativePanning(target, true);

_removeListener(_win, "resize", onResize);

ScrollTrigger.removeEventListener("refresh", onResize);
    inputObserver.kill();
  };

vars.lockAxis = vars.lockAxis !== false;
  self = new _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer(vars);
  self.iOS = _fixIOSBug; // used in the Observer getCachedScroll() function to work around an iOS bug that wreaks havoc with TouchEvent.clientY if we allow scroll to go all the way back to 0.

_fixIOSBug && !scrollFuncY() && scrollFuncY(1); // iOS bug causes event.clientY values to freak out (wildly inaccurate) if the scroll position is exactly 0.

_fixIOSBug && gsap.ticker.add(_passThrough); // prevent the ticker from sleeping

onStopDelayedCall = self._dc;
  tween = gsap.to(self, {
    ease: "power4",
    paused: true,
    scrollX: normalizeScrollX ? "+=0.1" : "+=0",
    scrollY: "+=0.1",
    onComplete: onStopDelayedCall.vars.onComplete
  });
  return self;
};

ScrollTrigger.sort = function (func) {
  return _triggers.sort(func || function (a, b) {
    return (a.vars.refreshPriority || 0) * -1e6 + a.start - (b.start + (b.vars.refreshPriority || 0) * -1e6);
  });
};

ScrollTrigger.observe = function (vars) {
  return new _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer(vars);
};

ScrollTrigger.normalizeScroll = function (vars) {
  if (typeof vars === "undefined") {
    return _normalizer;
  }

if (vars === true && _normalizer) {
    return _normalizer.enable();
  }

if (vars === false) {
    return _normalizer && _normalizer.kill();
  }

var normalizer = vars instanceof _Observer_js__WEBPACK_IMPORTED_MODULE_0__.Observer ? vars : _getScrollNormalizer(vars);
  _normalizer && _normalizer.target === normalizer.target && _normalizer.kill();
  _isViewport(normalizer.target) && (_normalizer = normalizer);
  return normalizer;
};

ScrollTrigger.core = {
  // smaller file size way to leverage in ScrollSmoother and Observer
  _getVelocityProp: _Observer_js__WEBPACK_IMPORTED_MODULE_0__._getVelocityProp,
  _inputObserver: _inputObserver,
  _scrollers: _Observer_js__WEBPACK_IMPORTED_MODULE_0__._scrollers,
  _proxies: _Observer_js__WEBPACK_IMPORTED_MODULE_0__._proxies,
  bridge: {
    // when normalizeScroll sets the scroll position (ss = setScroll)
    ss: function ss() {
      _lastScrollTime || _dispatch("scrollStart");
      _lastScrollTime = _getTime();
    },
    // a way to get the _refreshing value in Observer
    ref: function ref() {
      return _refreshing;
    }
  }
};
_getGSAP() && gsap.registerPlugin(ScrollTrigger);

/***/ }),

/***/ "./node_modules/gsap/SplitText.js":
/*!****************************************!*\
  !*** ./node_modules/gsap/SplitText.js ***!
  \****************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "SplitText": () => (/* binding */ SplitText),
/* harmony export */   "default": () => (/* binding */ SplitText)
/* harmony export */ });
/* harmony import */ var _utils_strings_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./utils/strings.js */ "./node_modules/gsap/utils/strings.js");
/*!
 * SplitText: 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */

var _doc,
    _win,
    _coreInitted,
    gsap,
    _context,
    _toArray,
    _stripExp = /(?:\r|\n|\t\t)/g,
    //find carriage returns, new line feeds and double-tabs.
_multipleSpacesExp = /(?:\s\s+)/g,
    _initCore = function _initCore(core) {
  _doc = document;
  _win = window;
  gsap = gsap || core || _win.gsap || console.warn("Please gsap.registerPlugin(SplitText)");

if (gsap) {
    _toArray = gsap.utils.toArray;

_context = gsap.core.context || function () {};

_coreInitted = 1;
  }
},
    _bonusValidated = 1,
    //<name>SplitText</name>
_getComputedStyle = function _getComputedStyle(element) {
  return _win.getComputedStyle(element);
},
    _isAbsolute = function _isAbsolute(vars) {
  return vars.position === "absolute" || vars.absolute === true;
},
    //some characters are combining marks (think diacritics/accents in European languages) which involve 2 or 4 characters that combine in the browser to form a single character. Pass in the remaining text and an array of the special characters to search for and if the text starts with one of those special characters, it'll spit back the number of characters to retain (often 2 or 4). Used in the specialChars features that was introduced in 0.6.0.
_findSpecialChars = function _findSpecialChars(text, chars) {
  var i = chars.length,
      s;

while (--i > -1) {
    s = chars[i];

if (text.substr(0, s.length) === s) {
      return s.length;
    }
  }
},
    _divStart = " style='position:relative;display:inline-block;'",
    _cssClassFunc = function _cssClassFunc(cssClass, tag) {
  if (cssClass === void 0) {
    cssClass = "";
  }

var iterate = ~cssClass.indexOf("++"),
      num = 1;

if (iterate) {
    cssClass = cssClass.split("++").join("");
  }

return function () {
    return "<" + tag + _divStart + (cssClass ? " class='" + cssClass + (iterate ? num++ : "") + "'>" : ">");
  };
},
    _swapText = function _swapText(element, oldText, newText) {
  var type = element.nodeType;

if (type === 1 || type === 9 || type === 11) {
    for (element = element.firstChild; element; element = element.nextSibling) {
      _swapText(element, oldText, newText);
    }
  } else if (type === 3 || type === 4) {
    element.nodeValue = element.nodeValue.split(oldText).join(newText);
  }
},
    _pushReversed = function _pushReversed(a, merge) {
  var i = merge.length;

while (--i > -1) {
    a.push(merge[i]);
  }
},
    _isBeforeWordDelimiter = function _isBeforeWordDelimiter(e, root, wordDelimiter) {
  var next;

while (e && e !== root) {
    next = e._next || e.nextSibling;

if (next) {
      return next.textContent.charAt(0) === wordDelimiter;
    }

e = e.parentNode || e._parent;
  }
},
    _deWordify = function _deWordify(e) {
  var children = _toArray(e.childNodes),
      l = children.length,
      i,
      child;

for (i = 0; i < l; i++) {
    child = children[i];

if (child._isSplit) {
      _deWordify(child);
    } else {
      if (i && child.previousSibling && child.previousSibling.nodeType === 3) {
        child.previousSibling.nodeValue += child.nodeType === 3 ? child.nodeValue : child.firstChild.nodeValue;
        e.removeChild(child);
      } else if (child.nodeType !== 3) {
        e.insertBefore(child.firstChild, child);
        e.removeChild(child);
      }
    }
  }
},
    _getStyleAsNumber = function _getStyleAsNumber(name, computedStyle) {
  return parseFloat(computedStyle[name]) || 0;
},
    _setPositionsAfterSplit = function _setPositionsAfterSplit(element, vars, allChars, allWords, allLines, origWidth, origHeight) {
  var cs = _getComputedStyle(element),
      paddingLeft = _getStyleAsNumber("paddingLeft", cs),
      lineOffsetY = -999,
      borderTopAndBottom = _getStyleAsNumber("borderBottomWidth", cs) + _getStyleAsNumber("borderTopWidth", cs),
      borderLeftAndRight = _getStyleAsNumber("borderLeftWidth", cs) + _getStyleAsNumber("borderRightWidth", cs),
      padTopAndBottom = _getStyleAsNumber("paddingTop", cs) + _getStyleAsNumber("paddingBottom", cs),
      padLeftAndRight = _getStyleAsNumber("paddingLeft", cs) + _getStyleAsNumber("paddingRight", cs),
      lineThreshold = _getStyleAsNumber("fontSize", cs) * (vars.lineThreshold || 0.2),
      textAlign = cs.textAlign,
      charArray = [],
      wordArray = [],
      lineArray = [],
      wordDelimiter = vars.wordDelimiter || " ",
      tag = vars.tag ? vars.tag : vars.span ? "span" : "div",
      types = vars.type || vars.split || "chars,words,lines",
      lines = allLines && ~types.indexOf("lines") ? [] : null,
      words = ~types.indexOf("words"),
      chars = ~types.indexOf("chars"),
      absolute = _isAbsolute(vars),
      linesClass = vars.linesClass,
      iterateLine = ~(linesClass || "").indexOf("++"),
      spaceNodesToRemove = [],
      isFlex = cs.display === "flex",
      prevInlineDisplay = element.style.display,
      i,
      j,
      l,
      node,
      nodes,
      isChild,
      curLine,
      addWordSpaces,
      style,
      lineNode,
      lineWidth,
      offset;

iterateLine && (linesClass = linesClass.split("++").join(""));
  isFlex && (element.style.display = "block"); //copy all the descendant nodes into an array (we can't use a regular nodeList because it's live and we may need to renest things)

j = element.getElementsByTagName("*");
  l = j.length;
  nodes = [];

for (i = 0; i < l; i++) {
    nodes[i] = j[i];
  } //for absolute positioning, we need to record the x/y offsets and width/height for every <div>. And even if we're not positioning things absolutely, in order to accommodate lines, we must figure out where the y offset changes so that we can sense where the lines break, and we populate the lines array.

if (lines || absolute) {
    for (i = 0; i < l; i++) {
      node = nodes[i];
      isChild = node.parentNode === element;

if (isChild || absolute || chars && !words) {
        offset = node.offsetTop;

if (lines && isChild && Math.abs(offset - lineOffsetY) > lineThreshold && (node.nodeName !== "BR" || i === 0)) {
          //we found some rare occasions where a certain character like ‑ could cause the offsetTop to be off by 1 pixel, so we build in a threshold.
          curLine = [];
          lines.push(curLine);
          lineOffsetY = offset;
        }

if (absolute) {
          //record offset x and y, as well as width and height so that we can access them later for positioning. Grabbing them at once ensures we don't trigger a browser paint & we maximize performance.
          node._x = node.offsetLeft;
          node._y = offset;
          node._w = node.offsetWidth;
          node._h = node.offsetHeight;
        }

if (lines) {
          if (node._isSplit && isChild || !chars && isChild || words && isChild || !words && node.parentNode.parentNode === element && !node.parentNode._isSplit) {
            curLine.push(node);
            node._x -= paddingLeft;

if (_isBeforeWordDelimiter(node, element, wordDelimiter)) {
              node._wordEnd = true;
            }
          }

if (node.nodeName === "BR" && (node.nextSibling && node.nextSibling.nodeName === "BR" || i === 0)) {
            //two consecutive <br> tags signify a new [empty] line. Also, if the entire block of content STARTS with a <br>, add a line.
            lines.push([]);
          }
        }
      }
    }
  }

for (i = 0; i < l; i++) {
    node = nodes[i];
    isChild = node.parentNode === element;

if (node.nodeName === "BR") {
      if (lines || absolute) {
        node.parentNode && node.parentNode.removeChild(node);
        nodes.splice(i--, 1);
        l--;
      } else if (!words) {
        element.appendChild(node);
      }

continue;
    }

if (absolute) {
      style = node.style;

if (!words && !isChild) {
        node._x += node.parentNode._x;
        node._y += node.parentNode._y;
      }

style.left = node._x + "px";
      style.top = node._y + "px";
      style.position = "absolute";
      style.display = "block"; //if we don't set the width/height, things collapse in older versions of IE and the origin for transforms is thrown off in all browsers.

style.width = node._w + 1 + "px"; //IE is 1px short sometimes. Avoid wrapping

style.height = node._h + "px";
    }

if (!words && chars) {
      //we always start out wrapping words in their own <div> so that line breaks happen correctly, but here we'll remove those <div> tags if necessary and re-nest the characters directly into the element rather than inside the word <div>
      if (node._isSplit) {
        node._next = j = node.nextSibling;
        node.parentNode.appendChild(node); //put it at the end to keep the order correct.

while (j && j.nodeType === 3 && j.textContent === " ") {
          // if there are nodes that are just a space right afterward, go ahead and append them to the end so they're not out of order.
          node._next = j.nextSibling;
          node.parentNode.appendChild(j);
          j = j.nextSibling;
        }
      } else if (node.parentNode._isSplit) {
        node._parent = node.parentNode;

if (!node.previousSibling && node.firstChild) {
          node.firstChild._isFirst = true;
        }

if (node.nextSibling && node.nextSibling.textContent === " " && !node.nextSibling.nextSibling) {
          //if the last node inside a nested element is just a space (like T<span>nested </span>), remove it otherwise it'll get placed in the wrong order. Don't remove it right away, though, because we need to sense when words/characters are before a space like _isBeforeWordDelimiter(). Removing it now would make that a false negative.
          spaceNodesToRemove.push(node.nextSibling);
        }

node._next = node.nextSibling && node.nextSibling._isFirst ? null : node.nextSibling;
        node.parentNode.removeChild(node);
        nodes.splice(i--, 1);
        l--;
      } else if (!isChild) {
        offset = !node.nextSibling && _isBeforeWordDelimiter(node.parentNode, element, wordDelimiter); //if this is the last letter in the word (and we're not breaking by lines and not positioning things absolutely), we need to add a space afterwards so that the characters don't just mash together

node.parentNode._parent && node.parentNode._parent.appendChild(node);
        offset && node.parentNode.appendChild(_doc.createTextNode(" "));

if (tag === "span") {
          node.style.display = "inline"; //so that word breaks are honored properly.
        }

charArray.push(node);
      }
    } else if (node.parentNode._isSplit && !node._isSplit && node.innerHTML !== "") {
      wordArray.push(node);
    } else if (chars && !node._isSplit) {
      if (tag === "span") {
        node.style.display = "inline";
      }

charArray.push(node);
    }
  }

i = spaceNodesToRemove.length;

while (--i > -1) {
    spaceNodesToRemove[i].parentNode.removeChild(spaceNodesToRemove[i]);
  }

if (lines) {
    //the next 7 lines just give us the line width in the most reliable way and figure out the left offset (if position isn't relative or absolute). We must set the width along with text-align to ensure everything works properly for various alignments.
    if (absolute) {
      lineNode = _doc.createElement(tag);
      element.appendChild(lineNode);
      lineWidth = lineNode.offsetWidth + "px";
      offset = lineNode.offsetParent === element ? 0 : element.offsetLeft;
      element.removeChild(lineNode);
    }

style = element.style.cssText;
    element.style.cssText = "display:none;"; //to improve performance, set display:none on the element so that the browser doesn't have to worry about reflowing or rendering while we're renesting things. We'll revert the cssText later.
    //we can't use element.innerHTML = "" because that causes IE to literally delete all the nodes and their content even though we've stored them in an array! So we must loop through the children and remove them.

while (element.firstChild) {
      element.removeChild(element.firstChild);
    }

addWordSpaces = wordDelimiter === " " && (!absolute || !words && !chars);

for (i = 0; i < lines.length; i++) {
      curLine = lines[i];
      lineNode = _doc.createElement(tag);
      lineNode.style.cssText = "display:block;text-align:" + textAlign + ";position:" + (absolute ? "absolute;" : "relative;");

if (linesClass) {
        lineNode.className = linesClass + (iterateLine ? i + 1 : "");
      }

lineArray.push(lineNode);
      l = curLine.length;

for (j = 0; j < l; j++) {
        if (curLine[j].nodeName !== "BR") {
          node = curLine[j];
          lineNode.appendChild(node);
          addWordSpaces && node._wordEnd && lineNode.appendChild(_doc.createTextNode(" "));

if (absolute) {
            if (j === 0) {
              lineNode.style.top = node._y + "px";
              lineNode.style.left = paddingLeft + offset + "px";
            }

node.style.top = "0px";

if (offset) {
              node.style.left = node._x - offset + "px";
            }
          }
        }
      }

if (l === 0) {
        //if there are no nodes in the line (typically meaning there were two consecutive <br> tags, just add a non-breaking space so that things display properly.
        lineNode.innerHTML = " ";
      } else if (!words && !chars) {
        _deWordify(lineNode);

_swapText(lineNode, String.fromCharCode(160), " ");
      }

if (absolute) {
        lineNode.style.width = lineWidth;
        lineNode.style.height = node._h + "px";
      }

element.appendChild(lineNode);
    }

element.style.cssText = style;
  } //if everything shifts to being position:absolute, the container can collapse in terms of height or width, so fix that here.

if (absolute) {
    if (origHeight > element.clientHeight) {
      element.style.height = origHeight - padTopAndBottom + "px";

if (element.clientHeight < origHeight) {
        //IE8 and earlier use a different box model - we must include padding and borders
        element.style.height = origHeight + borderTopAndBottom + "px";
      }
    }

if (origWidth > element.clientWidth) {
      element.style.width = origWidth - padLeftAndRight + "px";

if (element.clientWidth < origWidth) {
        //IE8 and earlier use a different box model - we must include padding and borders
        element.style.width = origWidth + borderLeftAndRight + "px";
      }
    }
  }

isFlex && (prevInlineDisplay ? element.style.display = prevInlineDisplay : element.style.removeProperty("display"));

_pushReversed(allChars, charArray);

words && _pushReversed(allWords, wordArray);

_pushReversed(allLines, lineArray);
},
    _splitRawText = function _splitRawText(element, vars, wordStart, charStart) {
  var tag = vars.tag ? vars.tag : vars.span ? "span" : "div",
      types = vars.type || vars.split || "chars,words,lines",
      //words = (types.indexOf("words") !== -1),
  chars = ~types.indexOf("chars"),
      absolute = _isAbsolute(vars),
      wordDelimiter = vars.wordDelimiter || " ",
      space = wordDelimiter !== " " ? "" : absolute ? " " : " ",
      wordEnd = "</" + tag + ">",
      wordIsOpen = 1,
      specialChars = vars.specialChars ? typeof vars.specialChars === "function" ? vars.specialChars : _findSpecialChars : null,
      //specialChars can be an array or a function. For performance reasons, we always set this local "specialChars" to a function to which we pass the remaining text and whatever the original vars.specialChars was so that if it's an array, it works with the _findSpecialChars() function.
  text,
      splitText,
      i,
      j,
      l,
      character,
      hasTagStart,
      testResult,
      container = _doc.createElement("div"),
      parent = element.parentNode;

parent.insertBefore(container, element);
  container.textContent = element.nodeValue;
  parent.removeChild(element);
  element = container;
  text = (0,_utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.getText)(element);
  hasTagStart = text.indexOf("<") !== -1;

if (vars.reduceWhiteSpace !== false) {
    text = text.replace(_multipleSpacesExp, " ").replace(_stripExp, "");
  }

if (hasTagStart) {
    text = text.split("<").join("{{LT}}"); //we can't leave "<" in the string, or when we set the innerHTML, it can be interpreted as a node
  }

l = text.length;
  splitText = (text.charAt(0) === " " ? space : "") + wordStart();

for (i = 0; i < l; i++) {
    character = text.charAt(i);

if (specialChars && (testResult = specialChars(text.substr(i), vars.specialChars))) {
      // look for any specialChars that were declared. Remember, they can be passed in like {specialChars:["मी", "पा", "है"]} or a function could be defined instead. Either way, the function should return the number of characters that should be grouped together for this "character".
      character = text.substr(i, testResult || 1);
      splitText += chars && character !== " " ? charStart() + character + "</" + tag + ">" : character;
      i += testResult - 1;
    } else if (character === wordDelimiter && text.charAt(i - 1) !== wordDelimiter && i) {
      splitText += wordIsOpen ? wordEnd : "";
      wordIsOpen = 0;

while (text.charAt(i + 1) === wordDelimiter) {
        //skip over empty spaces (to avoid making them words)
        splitText += space;
        i++;
      }

if (i === l - 1) {
        splitText += space;
      } else if (text.charAt(i + 1) !== ")") {
        splitText += space + wordStart();
        wordIsOpen = 1;
      }
    } else if (character === "{" && text.substr(i, 6) === "{{LT}}") {
      splitText += chars ? charStart() + "{{LT}}" + "</" + tag + ">" : "{{LT}}";
      i += 5;
    } else if (character.charCodeAt(0) >= 0xD800 && character.charCodeAt(0) <= 0xDBFF || text.charCodeAt(i + 1) >= 0xFE00 && text.charCodeAt(i + 1) <= 0xFE0F) {
      //special emoji characters use 2 or 4 unicode characters that we must keep together.
      j = ((text.substr(i, 12).split(_utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.emojiExp) || [])[1] || "").length || 2;
      splitText += chars && character !== " " ? charStart() + text.substr(i, j) + "</" + tag + ">" : text.substr(i, j);
      i += j - 1;
    } else {
      splitText += chars && character !== " " ? charStart() + character + "</" + tag + ">" : character;
    }
  }

element.outerHTML = splitText + (wordIsOpen ? wordEnd : "");
  hasTagStart && _swapText(parent, "{{LT}}", "<"); //note: don't perform this on "element" because that gets replaced with all new elements when we set element.outerHTML.
},
    _split = function _split(element, vars, wordStart, charStart) {
  var children = _toArray(element.childNodes),
      l = children.length,
      absolute = _isAbsolute(vars),
      i,
      child;

if (element.nodeType !== 3 || l > 1) {
    vars.absolute = false;

for (i = 0; i < l; i++) {
      child = children[i];
      child._next = child._isFirst = child._parent = child._wordEnd = null;

if (child.nodeType !== 3 || /\S+/.test(child.nodeValue)) {
        if (absolute && child.nodeType !== 3 && _getComputedStyle(child).display === "inline") {
          //if there's a child node that's display:inline, switch it to inline-block so that absolute positioning works properly (most browsers don't report offsetTop/offsetLeft properly inside a <span> for example)
          child.style.display = "inline-block";
          child.style.position = "relative";
        }

child._isSplit = true;

_split(child, vars, wordStart, charStart); //don't split lines on child elements

}
    }

vars.absolute = absolute;
    element._isSplit = true;
    return;
  }

_splitRawText(element, vars, wordStart, charStart);
};

var SplitText = /*#__PURE__*/function () {
  function SplitText(element, vars) {
    _coreInitted || _initCore();
    this.elements = _toArray(element);
    this.chars = [];
    this.words = [];
    this.lines = [];
    this._originals = [];
    this.vars = vars || {};

_context(this);

_bonusValidated && this.split(vars);
  }

var _proto = SplitText.prototype;

_proto.split = function split(vars) {
    this.isSplit && this.revert();
    this.vars = vars = vars || this.vars;
    this._originals.length = this.chars.length = this.words.length = this.lines.length = 0;

var i = this.elements.length,
        tag = vars.tag ? vars.tag : vars.span ? "span" : "div",
        wordStart = _cssClassFunc(vars.wordsClass, tag),
        charStart = _cssClassFunc(vars.charsClass, tag),
        origHeight,
        origWidth,
        e; //we split in reversed order so that if/when we position:absolute elements, they don't affect the position of the ones after them in the document flow (shifting them up as they're taken out of the document flow).

while (--i > -1) {
      e = this.elements[i];
      this._originals[i] = e.innerHTML;
      origHeight = e.clientHeight;
      origWidth = e.clientWidth;

_split(e, vars, wordStart, charStart);

_setPositionsAfterSplit(e, vars, this.chars, this.words, this.lines, origWidth, origHeight);
    }

this.chars.reverse();
    this.words.reverse();
    this.lines.reverse();
    this.isSplit = true;
    return this;
  };

_proto.revert = function revert() {
    var originals = this._originals;

if (!originals) {
      throw "revert() call wasn't scoped properly.";
    }

this.elements.forEach(function (e, i) {
      return e.innerHTML = originals[i];
    });
    this.chars = [];
    this.words = [];
    this.lines = [];
    this.isSplit = false;
    return this;
  };

SplitText.create = function create(element, vars) {
    return new SplitText(element, vars);
  };

return SplitText;
}();
SplitText.version = "3.11.4";
SplitText.register = _initCore;

/***/ }),

/***/ "./node_modules/gsap/TextPlugin.js":
/*!*****************************************!*\
  !*** ./node_modules/gsap/TextPlugin.js ***!
  \*****************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "TextPlugin": () => (/* binding */ TextPlugin),
/* harmony export */   "default": () => (/* binding */ TextPlugin)
/* harmony export */ });
/* harmony import */ var _utils_strings_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./utils/strings.js */ "./node_modules/gsap/utils/strings.js");
/*!
 * TextPlugin 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */

var gsap,
    _tempDiv,
    _getGSAP = function _getGSAP() {
  return gsap || typeof window !== "undefined" && (gsap = window.gsap) && gsap.registerPlugin && gsap;
};

var TextPlugin = {
  version: "3.11.4",
  name: "text",
  init: function init(target, value, tween) {
    typeof value !== "object" && (value = {
      value: value
    });

var i = target.nodeName.toUpperCase(),
        data = this,
        _value = value,
        newClass = _value.newClass,
        oldClass = _value.oldClass,
        preserveSpaces = _value.preserveSpaces,
        rtl = _value.rtl,
        delimiter = data.delimiter = value.delimiter || "",
        fillChar = data.fillChar = value.fillChar || (value.padSpace ? " " : ""),
        _short,
        text,
        original,
        j,
        condensedText,
        condensedOriginal,
        aggregate,
        s;

data.svg = target.getBBox && (i === "TEXT" || i === "TSPAN");

if (!("innerHTML" in target) && !data.svg) {
      return false;
    }

data.target = target;

if (!("value" in value)) {
      data.text = data.original = [""];
      return;
    }

original = (0,_utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.splitInnerHTML)(target, delimiter, false, preserveSpaces);
    _tempDiv || (_tempDiv = document.createElement("div"));
    _tempDiv.innerHTML = value.value;
    text = (0,_utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.splitInnerHTML)(_tempDiv, delimiter, false, preserveSpaces);
    data.from = tween._from;

if ((data.from || rtl) && !(rtl && data.from)) {
      // right-to-left or "from()" tweens should invert things (but if it's BOTH .from() and rtl, inverting twice equals not inverting at all :)
      i = original;
      original = text;
      text = i;
    }

data.hasClass = !!(newClass || oldClass);
    data.newClass = rtl ? oldClass : newClass;
    data.oldClass = rtl ? newClass : oldClass;
    i = original.length - text.length;
    _short = i < 0 ? original : text;

if (i < 0) {
      i = -i;
    }

while (--i > -1) {
      _short.push(fillChar);
    }

if (value.type === "diff") {
      j = 0;
      condensedText = [];
      condensedOriginal = [];
      aggregate = "";

for (i = 0; i < text.length; i++) {
        s = text[i];

if (s === original[i]) {
          aggregate += s;
        } else {
          condensedText[j] = aggregate + s;
          condensedOriginal[j++] = aggregate + original[i];
          aggregate = "";
        }
      }

text = condensedText;
      original = condensedOriginal;

if (aggregate) {
        text.push(aggregate);
        original.push(aggregate);
      }
    }

value.speed && tween.duration(Math.min(0.05 / value.speed * _short.length, value.maxDuration || 9999));
    data.rtl = rtl;
    data.original = original;
    data.text = text;

data._props.push("text");
  },
  render: function render(ratio, data) {
    if (ratio > 1) {
      ratio = 1;
    } else if (ratio < 0) {
      ratio = 0;
    }

if (data.from) {
      ratio = 1 - ratio;
    }

var text = data.text,
        hasClass = data.hasClass,
        newClass = data.newClass,
        oldClass = data.oldClass,
        delimiter = data.delimiter,
        target = data.target,
        fillChar = data.fillChar,
        original = data.original,
        rtl = data.rtl,
        l = text.length,
        i = (rtl ? 1 - ratio : ratio) * l + 0.5 | 0,
        applyNew,
        applyOld,
        str;

if (hasClass && ratio) {
      applyNew = newClass && i;
      applyOld = oldClass && i !== l;
      str = (applyNew ? "<span class='" + newClass + "'>" : "") + text.slice(0, i).join(delimiter) + (applyNew ? "</span>" : "") + (applyOld ? "<span class='" + oldClass + "'>" : "") + delimiter + original.slice(i).join(delimiter) + (applyOld ? "</span>" : "");
    } else {
      str = text.slice(0, i).join(delimiter) + delimiter + original.slice(i).join(delimiter);
    }

if (data.svg) {
      //SVG text elements don't have an "innerHTML" in Microsoft browsers.
      target.textContent = str;
    } else {
      target.innerHTML = fillChar === " " && ~str.indexOf("  ") ? str.split("  ").join("  ") : str;
    }
  }
};
TextPlugin.splitInnerHTML = _utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.splitInnerHTML;
TextPlugin.emojiSafeSplit = _utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.emojiSafeSplit;
TextPlugin.getText = _utils_strings_js__WEBPACK_IMPORTED_MODULE_0__.getText;
_getGSAP() && gsap.registerPlugin(TextPlugin);

/***/ }),

/***/ "./node_modules/gsap/gsap-core.js":
/*!****************************************!*\
  !*** ./node_modules/gsap/gsap-core.js ***!
  \****************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "Animation": () => (/* binding */ Animation),
/* harmony export */   "Back": () => (/* binding */ Back),
/* harmony export */   "Bounce": () => (/* binding */ Bounce),
/* harmony export */   "Circ": () => (/* binding */ Circ),
/* harmony export */   "Cubic": () => (/* binding */ Cubic),
/* harmony export */   "Elastic": () => (/* binding */ Elastic),
/* harmony export */   "Expo": () => (/* binding */ Expo),
/* harmony export */   "GSCache": () => (/* binding */ GSCache),
/* harmony export */   "Linear": () => (/* binding */ Linear),
/* harmony export */   "Power0": () => (/* binding */ Power0),
/* harmony export */   "Power1": () => (/* binding */ Power1),
/* harmony export */   "Power2": () => (/* binding */ Power2),
/* harmony export */   "Power3": () => (/* binding */ Power3),
/* harmony export */   "Power4": () => (/* binding */ Power4),
/* harmony export */   "PropTween": () => (/* binding */ PropTween),
/* harmony export */   "Quad": () => (/* binding */ Quad),
/* harmony export */   "Quart": () => (/* binding */ Quart),
/* harmony export */   "Quint": () => (/* binding */ Quint),
/* harmony export */   "Sine": () => (/* binding */ Sine),
/* harmony export */   "SteppedEase": () => (/* binding */ SteppedEase),
/* harmony export */   "Strong": () => (/* binding */ Strong),
/* harmony export */   "Timeline": () => (/* binding */ Timeline),
/* harmony export */   "TimelineLite": () => (/* binding */ Timeline),
/* harmony export */   "TimelineMax": () => (/* binding */ Timeline),
/* harmony export */   "Tween": () => (/* binding */ Tween),
/* harmony export */   "TweenLite": () => (/* binding */ Tween),
/* harmony export */   "TweenMax": () => (/* binding */ Tween),
/* harmony export */   "_checkPlugin": () => (/* binding */ _checkPlugin),
/* harmony export */   "_colorExp": () => (/* binding */ _colorExp),
/* harmony export */   "_colorStringFilter": () => (/* binding */ _colorStringFilter),
/* harmony export */   "_config": () => (/* binding */ _config),
/* harmony export */   "_forEachName": () => (/* binding */ _forEachName),
/* harmony export */   "_getCache": () => (/* binding */ _getCache),
/* harmony export */   "_getProperty": () => (/* binding */ _getProperty),
/* harmony export */   "_getSetter": () => (/* binding */ _getSetter),
/* harmony export */   "_isString": () => (/* binding */ _isString),
/* harmony export */   "_isUndefined": () => (/* binding */ _isUndefined),
/* harmony export */   "_missingPlugin": () => (/* binding */ _missingPlugin),
/* harmony export */   "_numExp": () => (/* binding */ _numExp),
/* harmony export */   "_numWithUnitExp": () => (/* binding */ _numWithUnitExp),
/* harmony export */   "_parseRelative": () => (/* binding */ _parseRelative),
/* harmony export */   "_plugins": () => (/* binding */ _plugins),
/* harmony export */   "_relExp": () => (/* binding */ _relExp),
/* harmony export */   "_removeLinkedListItem": () => (/* binding */ _removeLinkedListItem),
/* harmony export */   "_renderComplexString": () => (/* binding */ _renderComplexString),
/* harmony export */   "_replaceRandom": () => (/* binding */ _replaceRandom),
/* harmony export */   "_round": () => (/* binding */ _round),
/* harmony export */   "_roundModifier": () => (/* binding */ _roundModifier),
/* harmony export */   "_setDefaults": () => (/* binding */ _setDefaults),
/* harmony export */   "_sortPropTweensByPriority": () => (/* binding */ _sortPropTweensByPriority),
/* harmony export */   "_ticker": () => (/* binding */ _ticker),
/* harmony export */   "clamp": () => (/* binding */ clamp),
/* harmony export */   "default": () => (/* binding */ gsap),
/* harmony export */   "distribute": () => (/* binding */ distribute),
/* harmony export */   "getUnit": () => (/* binding */ getUnit),
/* harmony export */   "gsap": () => (/* binding */ gsap),
/* harmony export */   "interpolate": () => (/* binding */ interpolate),
/* harmony export */   "mapRange": () => (/* binding */ mapRange),
/* harmony export */   "normalize": () => (/* binding */ normalize),
/* harmony export */   "pipe": () => (/* binding */ pipe),
/* harmony export */   "random": () => (/* binding */ random),
/* harmony export */   "selector": () => (/* binding */ selector),
/* harmony export */   "shuffle": () => (/* binding */ shuffle),
/* harmony export */   "snap": () => (/* binding */ snap),
/* harmony export */   "splitColor": () => (/* binding */ splitColor),
/* harmony export */   "toArray": () => (/* binding */ toArray),
/* harmony export */   "unitize": () => (/* binding */ unitize),
/* harmony export */   "wrap": () => (/* binding */ wrap),
/* harmony export */   "wrapYoyo": () => (/* binding */ wrapYoyo)
/* harmony export */ });
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

/*!
 * GSAP 3.11.4
 * https://greensock.com
 *
 * @license Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */
var _config = {
  autoSleep: 120,
  force3D: "auto",
  nullTargetWarn: 1,
  units: {
    lineHeight: ""
  }
},
    _defaults = {
  duration: .5,
  overwrite: false,
  delay: 0
},
    _suppressOverwrites,
    _reverting,
    _context,
    _bigNum = 1e8,
    _tinyNum = 1 / _bigNum,
    _2PI = Math.PI * 2,
    _HALF_PI = _2PI / 4,
    _gsID = 0,
    _sqrt = Math.sqrt,
    _cos = Math.cos,
    _sin = Math.sin,
    _isString = function _isString(value) {
  return typeof value === "string";
},
    _isFunction = function _isFunction(value) {
  return typeof value === "function";
},
    _isNumber = function _isNumber(value) {
  return typeof value === "number";
},
    _isUndefined = function _isUndefined(value) {
  return typeof value === "undefined";
},
    _isObject = function _isObject(value) {
  return typeof value === "object";
},
    _isNotFalse = function _isNotFalse(value) {
  return value !== false;
},
    _windowExists = function _windowExists() {
  return typeof window !== "undefined";
},
    _isFuncOrString = function _isFuncOrString(value) {
  return _isFunction(value) || _isString(value);
},
    _isTypedArray = typeof ArrayBuffer === "function" && ArrayBuffer.isView || function () {},
    // note: IE10 has ArrayBuffer, but NOT ArrayBuffer.isView().
_isArray = Array.isArray,
    _strictNumExp = /(?:-?\.?\d|\.)+/gi,
    //only numbers (including negatives and decimals) but NOT relative values.
_numExp = /[-+=.]*\d+[.e\-+]*\d*[e\-+]*\d*/g,
    //finds any numbers, including ones that start with += or -=, negative numbers, and ones in scientific notation like 1e-8.
_numWithUnitExp = /[-+=.]*\d+[.e-]*\d*[a-z%]*/g,
    _complexStringNumExp = /[-+=.]*\d+\.?\d*(?:e-|e\+)?\d*/gi,
    //duplicate so that while we're looping through matches from exec(), it doesn't contaminate the lastIndex of _numExp which we use to search for colors too.
_relExp = /[+-]=-?[.\d]+/,
    _delimitedValueExp = /[^,'"\[\]\s]+/gi,
    // previously /[#\-+.]*\b[a-z\d\-=+%.]+/gi but didn't catch special characters.
_unitExp = /^[+\-=e\s\d]*\d+[.\d]*([a-z]*|%)\s*$/i,
    _globalTimeline,
    _win,
    _coreInitted,
    _doc,
    _globals = {},
    _installScope = {},
    _coreReady,
    _install = function _install(scope) {
  return (_installScope = _merge(scope, _globals)) && gsap;
},
    _missingPlugin = function _missingPlugin(property, value) {
  return console.warn("Invalid property", property, "set to", value, "Missing plugin? gsap.registerPlugin()");
},
    _warn = function _warn(message, suppress) {
  return !suppress && console.warn(message);
},
    _addGlobal = function _addGlobal(name, obj) {
  return name && (_globals[name] = obj) && _installScope && (_installScope[name] = obj) || _globals;
},
    _emptyFunc = function _emptyFunc() {
  return 0;
},
    _startAtRevertConfig = {
  suppressEvents: true,
  isStart: true,
  kill: false
},
    _revertConfigNoKill = {
  suppressEvents: true,
  kill: false
},
    _revertConfig = {
  suppressEvents: true
},
    _reservedProps = {},
    _lazyTweens = [],
    _lazyLookup = {},
    _lastRenderedFrame,
    _plugins = {},
    _effects = {},
    _nextGCFrame = 30,
    _harnessPlugins = [],
    _callbackNames = "",
    _harness = function _harness(targets) {
  var target = targets[0],
      harnessPlugin,
      i;
  _isObject(target) || _isFunction(target) || (targets = [targets]);

if (!(harnessPlugin = (target._gsap || {}).harness)) {
    // find the first target with a harness. We assume targets passed into an animation will be of similar type, meaning the same kind of harness can be used for them all (performance optimization)
    i = _harnessPlugins.length;

while (i-- && !_harnessPlugins[i].targetTest(target)) {}

harnessPlugin = _harnessPlugins[i];
  }

i = targets.length;

while (i--) {
    targets[i] && (targets[i]._gsap || (targets[i]._gsap = new GSCache(targets[i], harnessPlugin))) || targets.splice(i, 1);
  }

return targets;
},
    _getCache = function _getCache(target) {
  return target._gsap || _harness(toArray(target))[0]._gsap;
},
    _getProperty = function _getProperty(target, property, v) {
  return (v = target[property]) && _isFunction(v) ? target[property]() : _isUndefined(v) && target.getAttribute && target.getAttribute(property) || v;
},
    _forEachName = function _forEachName(names, func) {
  return (names = names.split(",")).forEach(func) || names;
},
    //split a comma-delimited list of names into an array, then run a forEach() function and return the split array (this is just a way to consolidate/shorten some code).
_round = function _round(value) {
  return Math.round(value * 100000) / 100000 || 0;
},
    _roundPrecise = function _roundPrecise(value) {
  return Math.round(value * 10000000) / 10000000 || 0;
},
    // increased precision mostly for timing values.
_parseRelative = function _parseRelative(start, value) {
  var operator = value.charAt(0),
      end = parseFloat(value.substr(2));
  start = parseFloat(start);
  return operator === "+" ? start + end : operator === "-" ? start - end : operator === "*" ? start * end : start / end;
},
    _arrayContainsAny = function _arrayContainsAny(toSearch, toFind) {
  //searches one array to find matches for any of the items in the toFind array. As soon as one is found, it returns true. It does NOT return all the matches; it's simply a boolean search.
  var l = toFind.length,
      i = 0;

for (; toSearch.indexOf(toFind[i]) < 0 && ++i < l;) {}

return i < l;
},
    _lazyRender = function _lazyRender() {
  var l = _lazyTweens.length,
      a = _lazyTweens.slice(0),
      i,
      tween;

_lazyLookup = {};
  _lazyTweens.length = 0;

for (i = 0; i < l; i++) {
    tween = a[i];
    tween && tween._lazy && (tween.render(tween._lazy[0], tween._lazy[1], true)._lazy = 0);
  }
},
    _lazySafeRender = function _lazySafeRender(animation, time, suppressEvents, force) {
  _lazyTweens.length && !_reverting && _lazyRender();
  animation.render(time, suppressEvents, force || _reverting && time < 0 && (animation._initted || animation._startAt));
  _lazyTweens.length && !_reverting && _lazyRender(); //in case rendering caused any tweens to lazy-init, we should render them because typically when someone calls seek() or time() or progress(), they expect an immediate render.
},
    _numericIfPossible = function _numericIfPossible(value) {
  var n = parseFloat(value);
  return (n || n === 0) && (value + "").match(_delimitedValueExp).length < 2 ? n : _isString(value) ? value.trim() : value;
},
    _passThrough = function _passThrough(p) {
  return p;
},
    _setDefaults = function _setDefaults(obj, defaults) {
  for (var p in defaults) {
    p in obj || (obj[p] = defaults[p]);
  }

return obj;
},
    _setKeyframeDefaults = function _setKeyframeDefaults(excludeDuration) {
  return function (obj, defaults) {
    for (var p in defaults) {
      p in obj || p === "duration" && excludeDuration || p === "ease" || (obj[p] = defaults[p]);
    }
  };
},
    _merge = function _merge(base, toMerge) {
  for (var p in toMerge) {
    base[p] = toMerge[p];
  }

return base;
},
    _mergeDeep = function _mergeDeep(base, toMerge) {
  for (var p in toMerge) {
    p !== "__proto__" && p !== "constructor" && p !== "prototype" && (base[p] = _isObject(toMerge[p]) ? _mergeDeep(base[p] || (base[p] = {}), toMerge[p]) : toMerge[p]);
  }

return base;
},
    _copyExcluding = function _copyExcluding(obj, excluding) {
  var copy = {},
      p;

for (p in obj) {
    p in excluding || (copy[p] = obj[p]);
  }

return copy;
},
    _inheritDefaults = function _inheritDefaults(vars) {
  var parent = vars.parent || _globalTimeline,
      func = vars.keyframes ? _setKeyframeDefaults(_isArray(vars.keyframes)) : _setDefaults;

if (_isNotFalse(vars.inherit)) {
    while (parent) {
      func(vars, parent.vars.defaults);
      parent = parent.parent || parent._dp;
    }
  }

return vars;
},
    _arraysMatch = function _arraysMatch(a1, a2) {
  var i = a1.length,
      match = i === a2.length;

while (match && i-- && a1[i] === a2[i]) {}

return i < 0;
},
    _addLinkedListItem = function _addLinkedListItem(parent, child, firstProp, lastProp, sortBy) {
  if (firstProp === void 0) {
    firstProp = "_first";
  }

if (lastProp === void 0) {
    lastProp = "_last";
  }

var prev = parent[lastProp],
      t;

if (sortBy) {
    t = child[sortBy];

while (prev && prev[sortBy] > t) {
      prev = prev._prev;
    }
  }

if (prev) {
    child._next = prev._next;
    prev._next = child;
  } else {
    child._next = parent[firstProp];
    parent[firstProp] = child;
  }

if (child._next) {
    child._next._prev = child;
  } else {
    parent[lastProp] = child;
  }

child._prev = prev;
  child.parent = child._dp = parent;
  return child;
},
    _removeLinkedListItem = function _removeLinkedListItem(parent, child, firstProp, lastProp) {
  if (firstProp === void 0) {
    firstProp = "_first";
  }

if (lastProp === void 0) {
    lastProp = "_last";
  }

var prev = child._prev,
      next = child._next;

if (prev) {
    prev._next = next;
  } else if (parent[firstProp] === child) {
    parent[firstProp] = next;
  }

if (next) {
    next._prev = prev;
  } else if (parent[lastProp] === child) {
    parent[lastProp] = prev;
  }

child._next = child._prev = child.parent = null; // don't delete the _dp just so we can revert if necessary. But parent should be null to indicate the item isn't in a linked list.
},
    _removeFromParent = function _removeFromParent(child, onlyIfParentHasAutoRemove) {
  child.parent && (!onlyIfParentHasAutoRemove || child.parent.autoRemoveChildren) && child.parent.remove(child);
  child._act = 0;
},
    _uncache = function _uncache(animation, child) {
  if (animation && (!child || child._end > animation._dur || child._start < 0)) {
    // performance optimization: if a child animation is passed in we should only uncache if that child EXTENDS the animation (its end time is beyond the end)
    var a = animation;

while (a) {
      a._dirty = 1;
      a = a.parent;
    }
  }

return animation;
},
    _recacheAncestors = function _recacheAncestors(animation) {
  var parent = animation.parent;

while (parent && parent.parent) {
    //sometimes we must force a re-sort of all children and update the duration/totalDuration of all ancestor timelines immediately in case, for example, in the middle of a render loop, one tween alters another tween's timeScale which shoves its startTime before 0, forcing the parent timeline to shift around and shiftChildren() which could affect that next tween's render (startTime). Doesn't matter for the root timeline though.
    parent._dirty = 1;
    parent.totalDuration();
    parent = parent.parent;
  }

return animation;
},
    _rewindStartAt = function _rewindStartAt(tween, totalTime, suppressEvents, force) {
  return tween._startAt && (_reverting ? tween._startAt.revert(_revertConfigNoKill) : tween.vars.immediateRender && !tween.vars.autoRevert || tween._startAt.render(totalTime, true, force));
},
    _hasNoPausedAncestors = function _hasNoPausedAncestors(animation) {
  return !animation || animation._ts && _hasNoPausedAncestors(animation.parent);
},
    _elapsedCycleDuration = function _elapsedCycleDuration(animation) {
  return animation._repeat ? _animationCycle(animation._tTime, animation = animation.duration() + animation._rDelay) * animation : 0;
},
    // feed in the totalTime and cycleDuration and it'll return the cycle (iteration minus 1) and if the playhead is exactly at the very END, it will NOT bump up to the next cycle.
_animationCycle = function _animationCycle(tTime, cycleDuration) {
  var whole = Math.floor(tTime /= cycleDuration);
  return tTime && whole === tTime ? whole - 1 : whole;
},
    _parentToChildTotalTime = function _parentToChildTotalTime(parentTime, child) {
  return (parentTime - child._start) * child._ts + (child._ts >= 0 ? 0 : child._dirty ? child.totalDuration() : child._tDur);
},
    _setEnd = function _setEnd(animation) {
  return animation._end = _roundPrecise(animation._start + (animation._tDur / Math.abs(animation._ts || animation._rts || _tinyNum) || 0));
},
    _alignPlayhead = function _alignPlayhead(animation, totalTime) {
  // adjusts the animation's _start and _end according to the provided totalTime (only if the parent's smoothChildTiming is true and the animation isn't paused). It doesn't do any rendering or forcing things back into parent timelines, etc. - that's what totalTime() is for.
  var parent = animation._dp;

if (parent && parent.smoothChildTiming && animation._ts) {
    animation._start = _roundPrecise(parent._time - (animation._ts > 0 ? totalTime / animation._ts : ((animation._dirty ? animation.totalDuration() : animation._tDur) - totalTime) / -animation._ts));

_setEnd(animation);

parent._dirty || _uncache(parent, animation); //for performance improvement. If the parent's cache is already dirty, it already took care of marking the ancestors as dirty too, so skip the function call here.
  }

return animation;
},

/*
_totalTimeToTime = (clampedTotalTime, duration, repeat, repeatDelay, yoyo) => {
	let cycleDuration = duration + repeatDelay,
		time = _round(clampedTotalTime % cycleDuration);
	if (time > duration) {
		time = duration;
	}
	return (yoyo && (~~(clampedTotalTime / cycleDuration) & 1)) ? duration - time : time;
},
*/
_postAddChecks = function _postAddChecks(timeline, child) {
  var t;

if (child._time || child._initted && !child._dur) {
    //in case, for example, the _start is moved on a tween that has already rendered. Imagine it's at its end state, then the startTime is moved WAY later (after the end of this timeline), it should render at its beginning.
    t = _parentToChildTotalTime(timeline.rawTime(), child);

if (!child._dur || _clamp(0, child.totalDuration(), t) - child._tTime > _tinyNum) {
      child.render(t, true);
    }
  } //if the timeline has already ended but the inserted tween/timeline extends the duration, we should enable this timeline again so that it renders properly. We should also align the playhead with the parent timeline's when appropriate.

if (_uncache(timeline, child)._dp && timeline._initted && timeline._time >= timeline._dur && timeline._ts) {
    //in case any of the ancestors had completed but should now be enabled...
    if (timeline._dur < timeline.duration()) {
      t = timeline;

while (t._dp) {
        t.rawTime() >= 0 && t.totalTime(t._tTime); //moves the timeline (shifts its startTime) if necessary, and also enables it. If it's currently zero, though, it may not be scheduled to render until later so there's no need to force it to align with the current playhead position. Only move to catch up with the playhead.

t = t._dp;
      }
    }

timeline._zTime = -_tinyNum; // helps ensure that the next render() will be forced (crossingStart = true in render()), even if the duration hasn't changed (we're adding a child which would need to get rendered). Definitely an edge case. Note: we MUST do this AFTER the loop above where the totalTime() might trigger a render() because this _addToTimeline() method gets called from the Animation constructor, BEFORE tweens even record their targets, etc. so we wouldn't want things to get triggered in the wrong order.
  }
},
    _addToTimeline = function _addToTimeline(timeline, child, position, skipChecks) {
  child.parent && _removeFromParent(child);
  child._start = _roundPrecise((_isNumber(position) ? position : position || timeline !== _globalTimeline ? _parsePosition(timeline, position, child) : timeline._time) + child._delay);
  child._end = _roundPrecise(child._start + (child.totalDuration() / Math.abs(child.timeScale()) || 0));

_addLinkedListItem(timeline, child, "_first", "_last", timeline._sort ? "_start" : 0);

_isFromOrFromStart(child) || (timeline._recent = child);
  skipChecks || _postAddChecks(timeline, child);
  timeline._ts < 0 && _alignPlayhead(timeline, timeline._tTime); // if the timeline is reversed and the new child makes it longer, we may need to adjust the parent's _start (push it back)

return timeline;
},
    _scrollTrigger = function _scrollTrigger(animation, trigger) {
  return (_globals.ScrollTrigger || _missingPlugin("scrollTrigger", trigger)) && _globals.ScrollTrigger.create(trigger, animation);
},
    _attemptInitTween = function _attemptInitTween(tween, time, force, suppressEvents, tTime) {
  _initTween(tween, time, tTime);

if (!tween._initted) {
    return 1;
  }

if (!force && tween._pt && !_reverting && (tween._dur && tween.vars.lazy !== false || !tween._dur && tween.vars.lazy) && _lastRenderedFrame !== _ticker.frame) {
    _lazyTweens.push(tween);

tween._lazy = [tTime, suppressEvents];
    return 1;
  }
},
    _parentPlayheadIsBeforeStart = function _parentPlayheadIsBeforeStart(_ref) {
  var parent = _ref.parent;
  return parent && parent._ts && parent._initted && !parent._lock && (parent.rawTime() < 0 || _parentPlayheadIsBeforeStart(parent));
},
    // check parent's _lock because when a timeline repeats/yoyos and does its artificial wrapping, we shouldn't force the ratio back to 0
_isFromOrFromStart = function _isFromOrFromStart(_ref2) {
  var data = _ref2.data;
  return data === "isFromStart" || data === "isStart";
},
    _renderZeroDurationTween = function _renderZeroDurationTween(tween, totalTime, suppressEvents, force) {
  var prevRatio = tween.ratio,
      ratio = totalTime < 0 || !totalTime && (!tween._start && _parentPlayheadIsBeforeStart(tween) && !(!tween._initted && _isFromOrFromStart(tween)) || (tween._ts < 0 || tween._dp._ts < 0) && !_isFromOrFromStart(tween)) ? 0 : 1,
      // if the tween or its parent is reversed and the totalTime is 0, we should go to a ratio of 0. Edge case: if a from() or fromTo() stagger tween is placed later in a timeline, the "startAt" zero-duration tween could initially render at a time when the parent timeline's playhead is technically BEFORE where this tween is, so make sure that any "from" and "fromTo" startAt tweens are rendered the first time at a ratio of 1.
  repeatDelay = tween._rDelay,
      tTime = 0,
      pt,
      iteration,
      prevIteration;

if (repeatDelay && tween._repeat) {
    // in case there's a zero-duration tween that has a repeat with a repeatDelay
    tTime = _clamp(0, tween._tDur, totalTime);
    iteration = _animationCycle(tTime, repeatDelay);
    tween._yoyo && iteration & 1 && (ratio = 1 - ratio);

if (iteration !== _animationCycle(tween._tTime, repeatDelay)) {
      // if iteration changed
      prevRatio = 1 - ratio;
      tween.vars.repeatRefresh && tween._initted && tween.invalidate();
    }
  }

if (ratio !== prevRatio || _reverting || force || tween._zTime === _tinyNum || !totalTime && tween._zTime) {
    if (!tween._initted && _attemptInitTween(tween, totalTime, force, suppressEvents, tTime)) {
      // if we render the very beginning (time == 0) of a fromTo(), we must force the render (normal tweens wouldn't need to render at a time of 0 when the prevTime was also 0). This is also mandatory to make sure overwriting kicks in immediately.
      return;
    }

prevIteration = tween._zTime;
    tween._zTime = totalTime || (suppressEvents ? _tinyNum : 0); // when the playhead arrives at EXACTLY time 0 (right on top) of a zero-duration tween, we need to discern if events are suppressed so that when the playhead moves again (next time), it'll trigger the callback. If events are NOT suppressed, obviously the callback would be triggered in this render. Basically, the callback should fire either when the playhead ARRIVES or LEAVES this exact spot, not both. Imagine doing a timeline.seek(0) and there's a callback that sits at 0. Since events are suppressed on that seek() by default, nothing will fire, but when the playhead moves off of that position, the callback should fire. This behavior is what people intuitively expect.

suppressEvents || (suppressEvents = totalTime && !prevIteration); // if it was rendered previously at exactly 0 (_zTime) and now the playhead is moving away, DON'T fire callbacks otherwise they'll seem like duplicates.

tween.ratio = ratio;
    tween._from && (ratio = 1 - ratio);
    tween._time = 0;
    tween._tTime = tTime;
    pt = tween._pt;

while (pt) {
      pt.r(ratio, pt.d);
      pt = pt._next;
    }

totalTime < 0 && _rewindStartAt(tween, totalTime, suppressEvents, true);
    tween._onUpdate && !suppressEvents && _callback(tween, "onUpdate");
    tTime && tween._repeat && !suppressEvents && tween.parent && _callback(tween, "onRepeat");

if ((totalTime >= tween._tDur || totalTime < 0) && tween.ratio === ratio) {
      ratio && _removeFromParent(tween, 1);

if (!suppressEvents && !_reverting) {
        _callback(tween, ratio ? "onComplete" : "onReverseComplete", true);

tween._prom && tween._prom();
      }
    }
  } else if (!tween._zTime) {
    tween._zTime = totalTime;
  }
},
    _findNextPauseTween = function _findNextPauseTween(animation, prevTime, time) {
  var child;

if (time > prevTime) {
    child = animation._first;

while (child && child._start <= time) {
      if (child.data === "isPause" && child._start > prevTime) {
        return child;
      }

child = child._next;
    }
  } else {
    child = animation._last;

while (child && child._start >= time) {
      if (child.data === "isPause" && child._start < prevTime) {
        return child;
      }

child = child._prev;
    }
  }
},
    _setDuration = function _setDuration(animation, duration, skipUncache, leavePlayhead) {
  var repeat = animation._repeat,
      dur = _roundPrecise(duration) || 0,
      totalProgress = animation._tTime / animation._tDur;
  totalProgress && !leavePlayhead && (animation._time *= dur / animation._dur);
  animation._dur = dur;
  animation._tDur = !repeat ? dur : repeat < 0 ? 1e10 : _roundPrecise(dur * (repeat + 1) + animation._rDelay * repeat);
  totalProgress > 0 && !leavePlayhead && _alignPlayhead(animation, animation._tTime = animation._tDur * totalProgress);
  animation.parent && _setEnd(animation);
  skipUncache || _uncache(animation.parent, animation);
  return animation;
},
    _onUpdateTotalDuration = function _onUpdateTotalDuration(animation) {
  return animation instanceof Timeline ? _uncache(animation) : _setDuration(animation, animation._dur);
},
    _zeroPosition = {
  _start: 0,
  endTime: _emptyFunc,
  totalDuration: _emptyFunc
},
    _parsePosition = function _parsePosition(animation, position, percentAnimation) {
  var labels = animation.labels,
      recent = animation._recent || _zeroPosition,
      clippedDuration = animation.duration() >= _bigNum ? recent.endTime(false) : animation._dur,
      //in case there's a child that infinitely repeats, users almost never intend for the insertion point of a new child to be based on a SUPER long value like that so we clip it and assume the most recently-added child's endTime should be used instead.
  i,
      offset,
      isPercent;

if (_isString(position) && (isNaN(position) || position in labels)) {
    //if the string is a number like "1", check to see if there's a label with that name, otherwise interpret it as a number (absolute value).
    offset = position.charAt(0);
    isPercent = position.substr(-1) === "%";
    i = position.indexOf("=");

if (offset === "<" || offset === ">") {
      i >= 0 && (position = position.replace(/=/, ""));
      return (offset === "<" ? recent._start : recent.endTime(recent._repeat >= 0)) + (parseFloat(position.substr(1)) || 0) * (isPercent ? (i < 0 ? recent : percentAnimation).totalDuration() / 100 : 1);
    }

if (i < 0) {
      position in labels || (labels[position] = clippedDuration);
      return labels[position];
    }

offset = parseFloat(position.charAt(i - 1) + position.substr(i + 1));

if (isPercent && percentAnimation) {
      offset = offset / 100 * (_isArray(percentAnimation) ? percentAnimation[0] : percentAnimation).totalDuration();
    }

return i > 1 ? _parsePosition(animation, position.substr(0, i - 1), percentAnimation) + offset : clippedDuration + offset;
  }

return position == null ? clippedDuration : +position;
},
    _createTweenType = function _createTweenType(type, params, timeline) {
  var isLegacy = _isNumber(params[1]),
      varsIndex = (isLegacy ? 2 : 1) + (type < 2 ? 0 : 1),
      vars = params[varsIndex],
      irVars,
      parent;

isLegacy && (vars.duration = params[1]);
  vars.parent = timeline;

if (type) {
    irVars = vars;
    parent = timeline;

while (parent && !("immediateRender" in irVars)) {
      // inheritance hasn't happened yet, but someone may have set a default in an ancestor timeline. We could do vars.immediateRender = _isNotFalse(_inheritDefaults(vars).immediateRender) but that'd exact a slight performance penalty because _inheritDefaults() also runs in the Tween constructor. We're paying a small kb price here to gain speed.
      irVars = parent.vars.defaults || {};
      parent = _isNotFalse(parent.vars.inherit) && parent.parent;
    }

vars.immediateRender = _isNotFalse(irVars.immediateRender);
    type < 2 ? vars.runBackwards = 1 : vars.startAt = params[varsIndex - 1]; // "from" vars
  }

return new Tween(params[0], vars, params[varsIndex + 1]);
},
    _conditionalReturn = function _conditionalReturn(value, func) {
  return value || value === 0 ? func(value) : func;
},
    _clamp = function _clamp(min, max, value) {
  return value < min ? min : value > max ? max : value;
},
    getUnit = function getUnit(value, v) {
  return !_isString(value) || !(v = _unitExp.exec(value)) ? "" : v[1];
},
    // note: protect against padded numbers as strings, like "100.100". That shouldn't return "00" as the unit. If it's numeric, return no unit.
clamp = function clamp(min, max, value) {
  return _conditionalReturn(value, function (v) {
    return _clamp(min, max, v);
  });
},
    _slice = [].slice,
    _isArrayLike = function _isArrayLike(value, nonEmpty) {
  return value && _isObject(value) && "length" in value && (!nonEmpty && !value.length || value.length - 1 in value && _isObject(value[0])) && !value.nodeType && value !== _win;
},
    _flatten = function _flatten(ar, leaveStrings, accumulator) {
  if (accumulator === void 0) {
    accumulator = [];
  }

return ar.forEach(function (value) {
    var _accumulator;

return _isString(value) && !leaveStrings || _isArrayLike(value, 1) ? (_accumulator = accumulator).push.apply(_accumulator, toArray(value)) : accumulator.push(value);
  }) || accumulator;
},
    //takes any value and returns an array. If it's a string (and leaveStrings isn't true), it'll use document.querySelectorAll() and convert that to an array. It'll also accept iterables like jQuery objects.
toArray = function toArray(value, scope, leaveStrings) {
  return _context && !scope && _context.selector ? _context.selector(value) : _isString(value) && !leaveStrings && (_coreInitted || !_wake()) ? _slice.call((scope || _doc).querySelectorAll(value), 0) : _isArray(value) ? _flatten(value, leaveStrings) : _isArrayLike(value) ? _slice.call(value, 0) : value ? [value] : [];
},
    selector = function selector(value) {
  value = toArray(value)[0] || _warn("Invalid scope") || {};
  return function (v) {
    var el = value.current || value.nativeElement || value;
    return toArray(v, el.querySelectorAll ? el : el === value ? _warn("Invalid scope") || _doc.createElement("div") : value);
  };
},
    shuffle = function shuffle(a) {
  return a.sort(function () {
    return .5 - Math.random();
  });
},
    // alternative that's a bit faster and more reliably diverse but bigger:   for (let j, v, i = a.length; i; j = Math.floor(Math.random() * i), v = a[--i], a[i] = a[j], a[j] = v); return a;
//for distributing values across an array. Can accept a number, a function or (most commonly) a function which can contain the following properties: {base, amount, from, ease, grid, axis, length, each}. Returns a function that expects the following parameters: index, target, array. Recognizes the following
distribute = function distribute(v) {
  if (_isFunction(v)) {
    return v;
  }

var vars = _isObject(v) ? v : {
    each: v
  },
      //n:1 is just to indicate v was a number; we leverage that later to set v according to the length we get. If a number is passed in, we treat it like the old stagger value where 0.1, for example, would mean that things would be distributed with 0.1 between each element in the array rather than a total "amount" that's chunked out among them all.
  ease = _parseEase(vars.ease),
      from = vars.from || 0,
      base = parseFloat(vars.base) || 0,
      cache = {},
      isDecimal = from > 0 && from < 1,
      ratios = isNaN(from) || isDecimal,
      axis = vars.axis,
      ratioX = from,
      ratioY = from;

if (_isString(from)) {
    ratioX = ratioY = {
      center: .5,
      edges: .5,
      end: 1
    }[from] || 0;
  } else if (!isDecimal && ratios) {
    ratioX = from[0];
    ratioY = from[1];
  }

return function (i, target, a) {
    var l = (a || vars).length,
        distances = cache[l],
        originX,
        originY,
        x,
        y,
        d,
        j,
        max,
        min,
        wrapAt;

if (!distances) {
      wrapAt = vars.grid === "auto" ? 0 : (vars.grid || [1, _bigNum])[1];

if (!wrapAt) {
        max = -_bigNum;

while (max < (max = a[wrapAt++].getBoundingClientRect().left) && wrapAt < l) {}

wrapAt--;
      }

distances = cache[l] = [];
      originX = ratios ? Math.min(wrapAt, l) * ratioX - .5 : from % wrapAt;
      originY = wrapAt === _bigNum ? 0 : ratios ? l * ratioY / wrapAt - .5 : from / wrapAt | 0;
      max = 0;
      min = _bigNum;

for (j = 0; j < l; j++) {
        x = j % wrapAt - originX;
        y = originY - (j / wrapAt | 0);
        distances[j] = d = !axis ? _sqrt(x * x + y * y) : Math.abs(axis === "y" ? y : x);
        d > max && (max = d);
        d < min && (min = d);
      }

from === "random" && shuffle(distances);
      distances.max = max - min;
      distances.min = min;
      distances.v = l = (parseFloat(vars.amount) || parseFloat(vars.each) * (wrapAt > l ? l - 1 : !axis ? Math.max(wrapAt, l / wrapAt) : axis === "y" ? l / wrapAt : wrapAt) || 0) * (from === "edges" ? -1 : 1);
      distances.b = l < 0 ? base - l : base;
      distances.u = getUnit(vars.amount || vars.each) || 0; //unit

ease = ease && l < 0 ? _invertEase(ease) : ease;
    }

l = (distances[i] - distances.min) / distances.max || 0;
    return _roundPrecise(distances.b + (ease ? ease(l) : l) * distances.v) + distances.u; //round in order to work around floating point errors
  };
},
    _roundModifier = function _roundModifier(v) {
  //pass in 0.1 get a function that'll round to the nearest tenth, or 5 to round to the closest 5, or 0.001 to the closest 1000th, etc.
  var p = Math.pow(10, ((v + "").split(".")[1] || "").length); //to avoid floating point math errors (like 24 * 0.1 == 2.4000000000000004), we chop off at a specific number of decimal places (much faster than toFixed())

return function (raw) {
    var n = _roundPrecise(Math.round(parseFloat(raw) / v) * v * p);

return (n - n % 1) / p + (_isNumber(raw) ? 0 : getUnit(raw)); // n - n % 1 replaces Math.floor() in order to handle negative values properly. For example, Math.floor(-150.00000000000003) is 151!
  };
},
    snap = function snap(snapTo, value) {
  var isArray = _isArray(snapTo),
      radius,
      is2D;

if (!isArray && _isObject(snapTo)) {
    radius = isArray = snapTo.radius || _bigNum;

if (snapTo.values) {
      snapTo = toArray(snapTo.values);

if (is2D = !_isNumber(snapTo[0])) {
        radius *= radius; //performance optimization so we don't have to Math.sqrt() in the loop.
      }
    } else {
      snapTo = _roundModifier(snapTo.increment);
    }
  }

return _conditionalReturn(value, !isArray ? _roundModifier(snapTo) : _isFunction(snapTo) ? function (raw) {
    is2D = snapTo(raw);
    return Math.abs(is2D - raw) <= radius ? is2D : raw;
  } : function (raw) {
    var x = parseFloat(is2D ? raw.x : raw),
        y = parseFloat(is2D ? raw.y : 0),
        min = _bigNum,
        closest = 0,
        i = snapTo.length,
        dx,
        dy;

while (i--) {
      if (is2D) {
        dx = snapTo[i].x - x;
        dy = snapTo[i].y - y;
        dx = dx * dx + dy * dy;
      } else {
        dx = Math.abs(snapTo[i] - x);
      }

if (dx < min) {
        min = dx;
        closest = i;
      }
    }

closest = !radius || min <= radius ? snapTo[closest] : raw;
    return is2D || closest === raw || _isNumber(raw) ? closest : closest + getUnit(raw);
  });
},
    random = function random(min, max, roundingIncrement, returnFunction) {
  return _conditionalReturn(_isArray(min) ? !max : roundingIncrement === true ? !!(roundingIncrement = 0) : !returnFunction, function () {
    return _isArray(min) ? min[~~(Math.random() * min.length)] : (roundingIncrement = roundingIncrement || 1e-5) && (returnFunction = roundingIncrement < 1 ? Math.pow(10, (roundingIncrement + "").length - 2) : 1) && Math.floor(Math.round((min - roundingIncrement / 2 + Math.random() * (max - min + roundingIncrement * .99)) / roundingIncrement) * roundingIncrement * returnFunction) / returnFunction;
  });
},
    pipe = function pipe() {
  for (var _len = arguments.length, functions = new Array(_len), _key = 0; _key < _len; _key++) {
    functions[_key] = arguments[_key];
  }

return function (value) {
    return functions.reduce(function (v, f) {
      return f(v);
    }, value);
  };
},
    unitize = function unitize(func, unit) {
  return function (value) {
    return func(parseFloat(value)) + (unit || getUnit(value));
  };
},
    normalize = function normalize(min, max, value) {
  return mapRange(min, max, 0, 1, value);
},
    _wrapArray = function _wrapArray(a, wrapper, value) {
  return _conditionalReturn(value, function (index) {
    return a[~~wrapper(index)];
  });
},
    wrap = function wrap(min, max, value) {
  // NOTE: wrap() CANNOT be an arrow function! A very odd compiling bug causes problems (unrelated to GSAP).
  var range = max - min;
  return _isArray(min) ? _wrapArray(min, wrap(0, min.length), max) : _conditionalReturn(value, function (value) {
    return (range + (value - min) % range) % range + min;
  });
},
    wrapYoyo = function wrapYoyo(min, max, value) {
  var range = max - min,
      total = range * 2;
  return _isArray(min) ? _wrapArray(min, wrapYoyo(0, min.length - 1), max) : _conditionalReturn(value, function (value) {
    value = (total + (value - min) % total) % total || 0;
    return min + (value > range ? total - value : value);
  });
},
    _replaceRandom = function _replaceRandom(value) {
  //replaces all occurrences of random(...) in a string with the calculated random value. can be a range like random(-100, 100, 5) or an array like random([0, 100, 500])
  var prev = 0,
      s = "",
      i,
      nums,
      end,
      isArray;

while (~(i = value.indexOf("random(", prev))) {
    end = value.indexOf(")", i);
    isArray = value.charAt(i + 7) === "[";
    nums = value.substr(i + 7, end - i - 7).match(isArray ? _delimitedValueExp : _strictNumExp);
    s += value.substr(prev, i - prev) + random(isArray ? nums : +nums[0], isArray ? 0 : +nums[1], +nums[2] || 1e-5);
    prev = end + 1;
  }

return s + value.substr(prev, value.length - prev);
},
    mapRange = function mapRange(inMin, inMax, outMin, outMax, value) {
  var inRange = inMax - inMin,
      outRange = outMax - outMin;
  return _conditionalReturn(value, function (value) {
    return outMin + ((value - inMin) / inRange * outRange || 0);
  });
},
    interpolate = function interpolate(start, end, progress, mutate) {
  var func = isNaN(start + end) ? 0 : function (p) {
    return (1 - p) * start + p * end;
  };

if (!func) {
    var isString = _isString(start),
        master = {},
        p,
        i,
        interpolators,
        l,
        il;

progress === true && (mutate = 1) && (progress = null);

if (isString) {
      start = {
        p: start
      };
      end = {
        p: end
      };
    } else if (_isArray(start) && !_isArray(end)) {
      interpolators = [];
      l = start.length;
      il = l - 2;

for (i = 1; i < l; i++) {
        interpolators.push(interpolate(start[i - 1], start[i])); //build the interpolators up front as a performance optimization so that when the function is called many times, it can just reuse them.
      }

l--;

func = function func(p) {
        p *= l;
        var i = Math.min(il, ~~p);
        return interpolators[i](p - i);
      };

progress = end;
    } else if (!mutate) {
      start = _merge(_isArray(start) ? [] : {}, start);
    }

if (!interpolators) {
      for (p in end) {
        _addPropTween.call(master, start, p, "get", end[p]);
      }

func = function func(p) {
        return _renderPropTweens(p, master) || (isString ? start.p : start);
      };
    }
  }

return _conditionalReturn(progress, func);
},
    _getLabelInDirection = function _getLabelInDirection(timeline, fromTime, backward) {
  //used for nextLabel() and previousLabel()
  var labels = timeline.labels,
      min = _bigNum,
      p,
      distance,
      label;

for (p in labels) {
    distance = labels[p] - fromTime;

if (distance < 0 === !!backward && distance && min > (distance = Math.abs(distance))) {
      label = p;
      min = distance;
    }
  }

return label;
},
    _callback = function _callback(animation, type, executeLazyFirst) {
  var v = animation.vars,
      callback = v[type],
      prevContext = _context,
      context = animation._ctx,
      params,
      scope,
      result;

if (!callback) {
    return;
  }

params = v[type + "Params"];
  scope = v.callbackScope || animation;
  executeLazyFirst && _lazyTweens.length && _lazyRender(); //in case rendering caused any tweens to lazy-init, we should render them because typically when a timeline finishes, users expect things to have rendered fully. Imagine an onUpdate on a timeline that reports/checks tweened values.

context && (_context = context);
  result = params ? callback.apply(scope, params) : callback.call(scope);
  _context = prevContext;
  return result;
},
    _interrupt = function _interrupt(animation) {
  _removeFromParent(animation);

animation.scrollTrigger && animation.scrollTrigger.kill(!!_reverting);
  animation.progress() < 1 && _callback(animation, "onInterrupt");
  return animation;
},
    _quickTween,
    _createPlugin = function _createPlugin(config) {
  config = !config.name && config["default"] || config; //UMD packaging wraps things oddly, so for example MotionPathHelper becomes {MotionPathHelper:MotionPathHelper, default:MotionPathHelper}.

var name = config.name,
      isFunc = _isFunction(config),
      Plugin = name && !isFunc && config.init ? function () {
    this._props = [];
  } : config,
      //in case someone passes in an object that's not a plugin, like CustomEase
  instanceDefaults = {
    init: _emptyFunc,
    render: _renderPropTweens,
    add: _addPropTween,
    kill: _killPropTweensOf,
    modifier: _addPluginModifier,
    rawVars: 0
  },
      statics = {
    targetTest: 0,
    get: 0,
    getSetter: _getSetter,
    aliases: {},
    register: 0
  };

_wake();

if (config !== Plugin) {
    if (_plugins[name]) {
      return;
    }

_setDefaults(Plugin, _setDefaults(_copyExcluding(config, instanceDefaults), statics)); //static methods

_merge(Plugin.prototype, _merge(instanceDefaults, _copyExcluding(config, statics))); //instance methods

_plugins[Plugin.prop = name] = Plugin;

if (config.targetTest) {
      _harnessPlugins.push(Plugin);

_reservedProps[name] = 1;
    }

name = (name === "css" ? "CSS" : name.charAt(0).toUpperCase() + name.substr(1)) + "Plugin"; //for the global name. "motionPath" should become MotionPathPlugin
  }

_addGlobal(name, Plugin);

config.register && config.register(gsap, Plugin, PropTween);
},

/*
 * --------------------------------------------------------------------------------------
 * COLORS
 * --------------------------------------------------------------------------------------
 */
_255 = 255,
    _colorLookup = {
  aqua: [0, _255, _255],
  lime: [0, _255, 0],
  silver: [192, 192, 192],
  black: [0, 0, 0],
  maroon: [128, 0, 0],
  teal: [0, 128, 128],
  blue: [0, 0, _255],
  navy: [0, 0, 128],
  white: [_255, _255, _255],
  olive: [128, 128, 0],
  yellow: [_255, _255, 0],
  orange: [_255, 165, 0],
  gray: [128, 128, 128],
  purple: [128, 0, 128],
  green: [0, 128, 0],
  red: [_255, 0, 0],
  pink: [_255, 192, 203],
  cyan: [0, _255, _255],
  transparent: [_255, _255, _255, 0]
},
    // possible future idea to replace the hard-coded color name values - put this in the ticker.wake() where we set the _doc:
// let ctx = _doc.createElement("canvas").getContext("2d");
// _forEachName("aqua,lime,silver,black,maroon,teal,blue,navy,white,olive,yellow,orange,gray,purple,green,red,pink,cyan", color => {ctx.fillStyle = color; _colorLookup[color] = splitColor(ctx.fillStyle)});
_hue = function _hue(h, m1, m2) {
  h += h < 0 ? 1 : h > 1 ? -1 : 0;
  return (h * 6 < 1 ? m1 + (m2 - m1) * h * 6 : h < .5 ? m2 : h * 3 < 2 ? m1 + (m2 - m1) * (2 / 3 - h) * 6 : m1) * _255 + .5 | 0;
},
    splitColor = function splitColor(v, toHSL, forceAlpha) {
  var a = !v ? _colorLookup.black : _isNumber(v) ? [v >> 16, v >> 8 & _255, v & _255] : 0,
      r,
      g,
      b,
      h,
      s,
      l,
      max,
      min,
      d,
      wasHSL;

if (!a) {
    if (v.substr(-1) === ",") {
      //sometimes a trailing comma is included and we should chop it off (typically from a comma-delimited list of values like a textShadow:"2px 2px 2px blue, 5px 5px 5px rgb(255,0,0)" - in this example "blue," has a trailing comma. We could strip it out inside parseComplex() but we'd need to do it to the beginning and ending values plus it wouldn't provide protection from other potential scenarios like if the user passes in a similar value.
      v = v.substr(0, v.length - 1);
    }

if (_colorLookup[v]) {
      a = _colorLookup[v];
    } else if (v.charAt(0) === "#") {
      if (v.length < 6) {
        //for shorthand like #9F0 or #9F0F (could have alpha)
        r = v.charAt(1);
        g = v.charAt(2);
        b = v.charAt(3);
        v = "#" + r + r + g + g + b + b + (v.length === 5 ? v.charAt(4) + v.charAt(4) : "");
      }

if (v.length === 9) {
        // hex with alpha, like #fd5e53ff
        a = parseInt(v.substr(1, 6), 16);
        return [a >> 16, a >> 8 & _255, a & _255, parseInt(v.substr(7), 16) / 255];
      }

v = parseInt(v.substr(1), 16);
      a = [v >> 16, v >> 8 & _255, v & _255];
    } else if (v.substr(0, 3) === "hsl") {
      a = wasHSL = v.match(_strictNumExp);

if (!toHSL) {
        h = +a[0] % 360 / 360;
        s = +a[1] / 100;
        l = +a[2] / 100;
        g = l <= .5 ? l * (s + 1) : l + s - l * s;
        r = l * 2 - g;
        a.length > 3 && (a[3] *= 1); //cast as number

a[0] = _hue(h + 1 / 3, r, g);
        a[1] = _hue(h, r, g);
        a[2] = _hue(h - 1 / 3, r, g);
      } else if (~v.indexOf("=")) {
        //if relative values are found, just return the raw strings with the relative prefixes in place.
        a = v.match(_numExp);
        forceAlpha && a.length < 4 && (a[3] = 1);
        return a;
      }
    } else {
      a = v.match(_strictNumExp) || _colorLookup.transparent;
    }

a = a.map(Number);
  }

if (toHSL && !wasHSL) {
    r = a[0] / _255;
    g = a[1] / _255;
    b = a[2] / _255;
    max = Math.max(r, g, b);
    min = Math.min(r, g, b);
    l = (max + min) / 2;

if (max === min) {
      h = s = 0;
    } else {
      d = max - min;
      s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
      h = max === r ? (g - b) / d + (g < b ? 6 : 0) : max === g ? (b - r) / d + 2 : (r - g) / d + 4;
      h *= 60;
    }

a[0] = ~~(h + .5);
    a[1] = ~~(s * 100 + .5);
    a[2] = ~~(l * 100 + .5);
  }

forceAlpha && a.length < 4 && (a[3] = 1);
  return a;
},
    _colorOrderData = function _colorOrderData(v) {
  // strips out the colors from the string, finds all the numeric slots (with units) and returns an array of those. The Array also has a "c" property which is an Array of the index values where the colors belong. This is to help work around issues where there's a mis-matched order of color/numeric data like drop-shadow(#f00 0px 1px 2px) and drop-shadow(0x 1px 2px #f00). This is basically a helper function used in _formatColors()
  var values = [],
      c = [],
      i = -1;
  v.split(_colorExp).forEach(function (v) {
    var a = v.match(_numWithUnitExp) || [];
    values.push.apply(values, a);
    c.push(i += a.length + 1);
  });
  values.c = c;
  return values;
},
    _formatColors = function _formatColors(s, toHSL, orderMatchData) {
  var result = "",
      colors = (s + result).match(_colorExp),
      type = toHSL ? "hsla(" : "rgba(",
      i = 0,
      c,
      shell,
      d,
      l;

if (!colors) {
    return s;
  }

colors = colors.map(function (color) {
    return (color = splitColor(color, toHSL, 1)) && type + (toHSL ? color[0] + "," + color[1] + "%," + color[2] + "%," + color[3] : color.join(",")) + ")";
  });

if (orderMatchData) {
    d = _colorOrderData(s);
    c = orderMatchData.c;

if (c.join(result) !== d.c.join(result)) {
      shell = s.replace(_colorExp, "1").split(_numWithUnitExp);
      l = shell.length - 1;

for (; i < l; i++) {
        result += shell[i] + (~c.indexOf(i) ? colors.shift() || type + "0,0,0,0)" : (d.length ? d : colors.length ? colors : orderMatchData).shift());
      }
    }
  }

if (!shell) {
    shell = s.split(_colorExp);
    l = shell.length - 1;

for (; i < l; i++) {
      result += shell[i] + colors[i];
    }
  }

return result + shell[l];
},
    _colorExp = function () {
  var s = "(?:\\b(?:(?:rgb|rgba|hsl|hsla)\$.+?\$)|\\B#(?:[0-9a-f]{3,4}){1,2}\\b",
      //we'll dynamically build this Regular Expression to conserve file size. After building it, it will be able to find rgb(), rgba(), # (hexadecimal), and named color values like red, blue, purple, etc.,
  p;

for (p in _colorLookup) {
    s += "|" + p + "\\b";
  }

return new RegExp(s + ")", "gi");
}(),
    _hslExp = /hsl[a]?\(/,
    _colorStringFilter = function _colorStringFilter(a) {
  var combined = a.join(" "),
      toHSL;
  _colorExp.lastIndex = 0;

if (_colorExp.test(combined)) {
    toHSL = _hslExp.test(combined);
    a[1] = _formatColors(a[1], toHSL);
    a[0] = _formatColors(a[0], toHSL, _colorOrderData(a[1])); // make sure the order of numbers/colors match with the END value.

return true;
  }
},

/*
 * --------------------------------------------------------------------------------------
 * TICKER
 * --------------------------------------------------------------------------------------
 */
_tickerActive,
    _ticker = function () {
  var _getTime = Date.now,
      _lagThreshold = 500,
      _adjustedLag = 33,
      _startTime = _getTime(),
      _lastUpdate = _startTime,
      _gap = 1000 / 240,
      _nextTime = _gap,
      _listeners = [],
      _id,
      _req,
      _raf,
      _self,
      _delta,
      _i,
      _tick = function _tick(v) {
    var elapsed = _getTime() - _lastUpdate,
        manual = v === true,
        overlap,
        dispatch,
        time,
        frame;

elapsed > _lagThreshold && (_startTime += elapsed - _adjustedLag);
    _lastUpdate += elapsed;
    time = _lastUpdate - _startTime;
    overlap = time - _nextTime;

if (overlap > 0 || manual) {
      frame = ++_self.frame;
      _delta = time - _self.time * 1000;
      _self.time = time = time / 1000;
      _nextTime += overlap + (overlap >= _gap ? 4 : _gap - overlap);
      dispatch = 1;
    }

manual || (_id = _req(_tick)); //make sure the request is made before we dispatch the "tick" event so that timing is maintained. Otherwise, if processing the "tick" requires a bunch of time (like 15ms) and we're using a setTimeout() that's based on 16.7ms, it'd technically take 31.7ms between frames otherwise.

if (dispatch) {
      for (_i = 0; _i < _listeners.length; _i++) {
        // use _i and check _listeners.length instead of a variable because a listener could get removed during the loop, and if that happens to an element less than the current index, it'd throw things off in the loop.
        _listeners[_i](time, _delta, frame, v);
      }
    }
  };

_self = {
    time: 0,
    frame: 0,
    tick: function tick() {
      _tick(true);
    },
    deltaRatio: function deltaRatio(fps) {
      return _delta / (1000 / (fps || 60));
    },
    wake: function wake() {
      if (_coreReady) {
        if (!_coreInitted && _windowExists()) {
          _win = _coreInitted = window;
          _doc = _win.document || {};
          _globals.gsap = gsap;
          (_win.gsapVersions || (_win.gsapVersions = [])).push(gsap.version);

_install(_installScope || _win.GreenSockGlobals || !_win.gsap && _win || {});

_raf = _win.requestAnimationFrame;
        }

_id && _self.sleep();

_req = _raf || function (f) {
          return setTimeout(f, _nextTime - _self.time * 1000 + 1 | 0);
        };

_tickerActive = 1;

_tick(2);
      }
    },
    sleep: function sleep() {
      (_raf ? _win.cancelAnimationFrame : clearTimeout)(_id);
      _tickerActive = 0;
      _req = _emptyFunc;
    },
    lagSmoothing: function lagSmoothing(threshold, adjustedLag) {
      _lagThreshold = threshold || Infinity; // zero should be interpreted as basically unlimited

_adjustedLag = Math.min(adjustedLag || 33, _lagThreshold);
    },
    fps: function fps(_fps) {
      _gap = 1000 / (_fps || 240);
      _nextTime = _self.time * 1000 + _gap;
    },
    add: function add(callback, once, prioritize) {
      var func = once ? function (t, d, f, v) {
        callback(t, d, f, v);

_self.remove(func);
      } : callback;

_self.remove(callback);

_listeners[prioritize ? "unshift" : "push"](func);

_wake();

return func;
    },
    remove: function remove(callback, i) {
      ~(i = _listeners.indexOf(callback)) && _listeners.splice(i, 1) && _i >= i && _i--;
    },
    _listeners: _listeners
  };
  return _self;
}(),
    _wake = function _wake() {
  return !_tickerActive && _ticker.wake();
},
    //also ensures the core classes are initialized.

/*
* -------------------------------------------------
* EASING
* -------------------------------------------------
*/
_easeMap = {},
    _customEaseExp = /^[\d.\-M][\d.\-,\s]/,
    _quotesExp = /["']/g,
    _parseObjectInString = function _parseObjectInString(value) {
  //takes a string like "{wiggles:10, type:anticipate})" and turns it into a real object. Notice it ends in ")" and includes the {} wrappers. This is because we only use this function for parsing ease configs and prioritized optimization rather than reusability.
  var obj = {},
      split = value.substr(1, value.length - 3).split(":"),
      key = split[0],
      i = 1,
      l = split.length,
      index,
      val,
      parsedVal;

for (; i < l; i++) {
    val = split[i];
    index = i !== l - 1 ? val.lastIndexOf(",") : val.length;
    parsedVal = val.substr(0, index);
    obj[key] = isNaN(parsedVal) ? parsedVal.replace(_quotesExp, "").trim() : +parsedVal;
    key = val.substr(index + 1).trim();
  }

return obj;
},
    _valueInParentheses = function _valueInParentheses(value) {
  var open = value.indexOf("(") + 1,
      close = value.indexOf(")"),
      nested = value.indexOf("(", open);
  return value.substring(open, ~nested && nested < close ? value.indexOf(")", close + 1) : close);
},
    _configEaseFromString = function _configEaseFromString(name) {
  //name can be a string like "elastic.out(1,0.5)", and pass in _easeMap as obj and it'll parse it out and call the actual function like _easeMap.Elastic.easeOut.config(1,0.5). It will also parse custom ease strings as long as CustomEase is loaded and registered (internally as _easeMap._CE).
  var split = (name + "").split("("),
      ease = _easeMap[split[0]];
  return ease && split.length > 1 && ease.config ? ease.config.apply(null, ~name.indexOf("{") ? [_parseObjectInString(split[1])] : _valueInParentheses(name).split(",").map(_numericIfPossible)) : _easeMap._CE && _customEaseExp.test(name) ? _easeMap._CE("", name) : ease;
},
    _invertEase = function _invertEase(ease) {
  return function (p) {
    return 1 - ease(1 - p);
  };
},
    // allow yoyoEase to be set in children and have those affected when the parent/ancestor timeline yoyos.
_propagateYoyoEase = function _propagateYoyoEase(timeline, isYoyo) {
  var child = timeline._first,
      ease;

while (child) {
    if (child instanceof Timeline) {
      _propagateYoyoEase(child, isYoyo);
    } else if (child.vars.yoyoEase && (!child._yoyo || !child._repeat) && child._yoyo !== isYoyo) {
      if (child.timeline) {
        _propagateYoyoEase(child.timeline, isYoyo);
      } else {
        ease = child._ease;
        child._ease = child._yEase;
        child._yEase = ease;
        child._yoyo = isYoyo;
      }
    }

child = child._next;
  }
},
    _parseEase = function _parseEase(ease, defaultEase) {
  return !ease ? defaultEase : (_isFunction(ease) ? ease : _easeMap[ease] || _configEaseFromString(ease)) || defaultEase;
},
    _insertEase = function _insertEase(names, easeIn, easeOut, easeInOut) {
  if (easeOut === void 0) {
    easeOut = function easeOut(p) {
      return 1 - easeIn(1 - p);
    };
  }

if (easeInOut === void 0) {
    easeInOut = function easeInOut(p) {
      return p < .5 ? easeIn(p * 2) / 2 : 1 - easeIn((1 - p) * 2) / 2;
    };
  }

var ease = {
    easeIn: easeIn,
    easeOut: easeOut,
    easeInOut: easeInOut
  },
      lowercaseName;

_forEachName(names, function (name) {
    _easeMap[name] = _globals[name] = ease;
    _easeMap[lowercaseName = name.toLowerCase()] = easeOut;

for (var p in ease) {
      _easeMap[lowercaseName + (p === "easeIn" ? ".in" : p === "easeOut" ? ".out" : ".inOut")] = _easeMap[name + "." + p] = ease[p];
    }
  });

return ease;
},
    _easeInOutFromOut = function _easeInOutFromOut(easeOut) {
  return function (p) {
    return p < .5 ? (1 - easeOut(1 - p * 2)) / 2 : .5 + easeOut((p - .5) * 2) / 2;
  };
},
    _configElastic = function _configElastic(type, amplitude, period) {
  var p1 = amplitude >= 1 ? amplitude : 1,
      //note: if amplitude is < 1, we simply adjust the period for a more natural feel. Otherwise the math doesn't work right and the curve starts at 1.
  p2 = (period || (type ? .3 : .45)) / (amplitude < 1 ? amplitude : 1),
      p3 = p2 / _2PI * (Math.asin(1 / p1) || 0),
      easeOut = function easeOut(p) {
    return p === 1 ? 1 : p1 * Math.pow(2, -10 * p) * _sin((p - p3) * p2) + 1;
  },
      ease = type === "out" ? easeOut : type === "in" ? function (p) {
    return 1 - easeOut(1 - p);
  } : _easeInOutFromOut(easeOut);

p2 = _2PI / p2; //precalculate to optimize

ease.config = function (amplitude, period) {
    return _configElastic(type, amplitude, period);
  };

return ease;
},
    _configBack = function _configBack(type, overshoot) {
  if (overshoot === void 0) {
    overshoot = 1.70158;
  }

var easeOut = function easeOut(p) {
    return p ? --p * p * ((overshoot + 1) * p + overshoot) + 1 : 0;
  },
      ease = type === "out" ? easeOut : type === "in" ? function (p) {
    return 1 - easeOut(1 - p);
  } : _easeInOutFromOut(easeOut);

ease.config = function (overshoot) {
    return _configBack(type, overshoot);
  };

return ease;
}; // a cheaper (kb and cpu) but more mild way to get a parameterized weighted ease by feeding in a value between -1 (easeIn) and 1 (easeOut) where 0 is linear.
// _weightedEase = ratio => {
// 	let y = 0.5 + ratio / 2;
// 	return p => (2 * (1 - p) * p * y + p * p);
// },
// a stronger (but more expensive kb/cpu) parameterized weighted ease that lets you feed in a value between -1 (easeIn) and 1 (easeOut) where 0 is linear.
// _weightedEaseStrong = ratio => {
// 	ratio = .5 + ratio / 2;
// 	let o = 1 / 3 * (ratio < .5 ? ratio : 1 - ratio),
// 		b = ratio - o,
// 		c = ratio + o;
// 	return p => p === 1 ? p : 3 * b * (1 - p) * (1 - p) * p + 3 * c * (1 - p) * p * p + p * p * p;
// };

_forEachName("Linear,Quad,Cubic,Quart,Quint,Strong", function (name, i) {
  var power = i < 5 ? i + 1 : i;

_insertEase(name + ",Power" + (power - 1), i ? function (p) {
    return Math.pow(p, power);
  } : function (p) {
    return p;
  }, function (p) {
    return 1 - Math.pow(1 - p, power);
  }, function (p) {
    return p < .5 ? Math.pow(p * 2, power) / 2 : 1 - Math.pow((1 - p) * 2, power) / 2;
  });
});

_easeMap.Linear.easeNone = _easeMap.none = _easeMap.Linear.easeIn;

_insertEase("Elastic", _configElastic("in"), _configElastic("out"), _configElastic());

(function (n, c) {
  var n1 = 1 / c,
      n2 = 2 * n1,
      n3 = 2.5 * n1,
      easeOut = function easeOut(p) {
    return p < n1 ? n * p * p : p < n2 ? n * Math.pow(p - 1.5 / c, 2) + .75 : p < n3 ? n * (p -= 2.25 / c) * p + .9375 : n * Math.pow(p - 2.625 / c, 2) + .984375;
  };

_insertEase("Bounce", function (p) {
    return 1 - easeOut(1 - p);
  }, easeOut);
})(7.5625, 2.75);

_insertEase("Expo", function (p) {
  return p ? Math.pow(2, 10 * (p - 1)) : 0;
});

_insertEase("Circ", function (p) {
  return -(_sqrt(1 - p * p) - 1);
});

_insertEase("Sine", function (p) {
  return p === 1 ? 1 : -_cos(p * _HALF_PI) + 1;
});

_insertEase("Back", _configBack("in"), _configBack("out"), _configBack());

_easeMap.SteppedEase = _easeMap.steps = _globals.SteppedEase = {
  config: function config(steps, immediateStart) {
    if (steps === void 0) {
      steps = 1;
    }

var p1 = 1 / steps,
        p2 = steps + (immediateStart ? 0 : 1),
        p3 = immediateStart ? 1 : 0,
        max = 1 - _tinyNum;
    return function (p) {
      return ((p2 * _clamp(0, max, p) | 0) + p3) * p1;
    };
  }
};
_defaults.ease = _easeMap["quad.out"];

_forEachName("onComplete,onUpdate,onStart,onRepeat,onReverseComplete,onInterrupt", function (name) {
  return _callbackNames += name + "," + name + "Params,";
});
/*
 * --------------------------------------------------------------------------------------
 * CACHE
 * --------------------------------------------------------------------------------------
 */

var GSCache = function GSCache(target, harness) {
  this.id = _gsID++;
  target._gsap = this;
  this.target = target;
  this.harness = harness;
  this.get = harness ? harness.get : _getProperty;
  this.set = harness ? harness.getSetter : _getSetter;
};
/*
 * --------------------------------------------------------------------------------------
 * ANIMATION
 * --------------------------------------------------------------------------------------
 */

var Animation = /*#__PURE__*/function () {
  function Animation(vars) {
    this.vars = vars;
    this._delay = +vars.delay || 0;

if (this._repeat = vars.repeat === Infinity ? -2 : vars.repeat || 0) {
      // TODO: repeat: Infinity on a timeline's children must flag that timeline internally and affect its totalDuration, otherwise it'll stop in the negative direction when reaching the start.
      this._rDelay = vars.repeatDelay || 0;
      this._yoyo = !!vars.yoyo || !!vars.yoyoEase;
    }

this._ts = 1;

_setDuration(this, +vars.duration, 1, 1);

this.data = vars.data;

if (_context) {
      this._ctx = _context;

_context.data.push(this);
    }

_tickerActive || _ticker.wake();
  }

var _proto = Animation.prototype;

_proto.delay = function delay(value) {
    if (value || value === 0) {
      this.parent && this.parent.smoothChildTiming && this.startTime(this._start + value - this._delay);
      this._delay = value;
      return this;
    }

return this._delay;
  };

_proto.duration = function duration(value) {
    return arguments.length ? this.totalDuration(this._repeat > 0 ? value + (value + this._rDelay) * this._repeat : value) : this.totalDuration() && this._dur;
  };

_proto.totalDuration = function totalDuration(value) {
    if (!arguments.length) {
      return this._tDur;
    }

this._dirty = 0;
    return _setDuration(this, this._repeat < 0 ? value : (value - this._repeat * this._rDelay) / (this._repeat + 1));
  };

_proto.totalTime = function totalTime(_totalTime, suppressEvents) {
    _wake();

if (!arguments.length) {
      return this._tTime;
    }

var parent = this._dp;

if (parent && parent.smoothChildTiming && this._ts) {
      _alignPlayhead(this, _totalTime);

!parent._dp || parent.parent || _postAddChecks(parent, this); // edge case: if this is a child of a timeline that already completed, for example, we must re-activate the parent.
      //in case any of the ancestor timelines had completed but should now be enabled, we should reset their totalTime() which will also ensure that they're lined up properly and enabled. Skip for animations that are on the root (wasteful). Example: a TimelineLite.exportRoot() is performed when there's a paused tween on the root, the export will not complete until that tween is unpaused, but imagine a child gets restarted later, after all [unpaused] tweens have completed. The start of that child would get pushed out, but one of the ancestors may have completed.

while (parent && parent.parent) {
        if (parent.parent._time !== parent._start + (parent._ts >= 0 ? parent._tTime / parent._ts : (parent.totalDuration() - parent._tTime) / -parent._ts)) {
          parent.totalTime(parent._tTime, true);
        }

parent = parent.parent;
      }

if (!this.parent && this._dp.autoRemoveChildren && (this._ts > 0 && _totalTime < this._tDur || this._ts < 0 && _totalTime > 0 || !this._tDur && !_totalTime)) {
        //if the animation doesn't have a parent, put it back into its last parent (recorded as _dp for exactly cases like this). Limit to parents with autoRemoveChildren (like globalTimeline) so that if the user manually removes an animation from a timeline and then alters its playhead, it doesn't get added back in.
        _addToTimeline(this._dp, this, this._start - this._delay);
      }
    }

if (this._tTime !== _totalTime || !this._dur && !suppressEvents || this._initted && Math.abs(this._zTime) === _tinyNum || !_totalTime && !this._initted && (this.add || this._ptLookup)) {
      // check for _ptLookup on a Tween instance to ensure it has actually finished being instantiated, otherwise if this.reverse() gets called in the Animation constructor, it could trigger a render() here even though the _targets weren't populated, thus when _init() is called there won't be any PropTweens (it'll act like the tween is non-functional)
      this._ts || (this._pTime = _totalTime); // otherwise, if an animation is paused, then the playhead is moved back to zero, then resumed, it'd revert back to the original time at the pause
      //if (!this._lock) { // avoid endless recursion (not sure we need this yet or if it's worth the performance hit)
      //   this._lock = 1;

_lazySafeRender(this, _totalTime, suppressEvents); //   this._lock = 0;
      //}

}

return this;
  };

_proto.time = function time(value, suppressEvents) {
    return arguments.length ? this.totalTime(Math.min(this.totalDuration(), value + _elapsedCycleDuration(this)) % (this._dur + this._rDelay) || (value ? this._dur : 0), suppressEvents) : this._time; // note: if the modulus results in 0, the playhead could be exactly at the end or the beginning, and we always defer to the END with a non-zero value, otherwise if you set the time() to the very end (duration()), it would render at the START!
  };

_proto.totalProgress = function totalProgress(value, suppressEvents) {
    return arguments.length ? this.totalTime(this.totalDuration() * value, suppressEvents) : this.totalDuration() ? Math.min(1, this._tTime / this._tDur) : this.ratio;
  };

_proto.progress = function progress(value, suppressEvents) {
    return arguments.length ? this.totalTime(this.duration() * (this._yoyo && !(this.iteration() & 1) ? 1 - value : value) + _elapsedCycleDuration(this), suppressEvents) : this.duration() ? Math.min(1, this._time / this._dur) : this.ratio;
  };

_proto.iteration = function iteration(value, suppressEvents) {
    var cycleDuration = this.duration() + this._rDelay;

return arguments.length ? this.totalTime(this._time + (value - 1) * cycleDuration, suppressEvents) : this._repeat ? _animationCycle(this._tTime, cycleDuration) + 1 : 1;
  } // potential future addition:
  // isPlayingBackwards() {
  // 	let animation = this,
  // 		orientation = 1; // 1 = forward, -1 = backward
  // 	while (animation) {
  // 		orientation *= animation.reversed() || (animation.repeat() && !(animation.iteration() & 1)) ? -1 : 1;
  // 		animation = animation.parent;
  // 	}
  // 	return orientation < 0;
  // }
  ;

_proto.timeScale = function timeScale(value) {
    if (!arguments.length) {
      return this._rts === -_tinyNum ? 0 : this._rts; // recorded timeScale. Special case: if someone calls reverse() on an animation with timeScale of 0, we assign it -_tinyNum to remember it's reversed.
    }

if (this._rts === value) {
      return this;
    }

var tTime = this.parent && this._ts ? _parentToChildTotalTime(this.parent._time, this) : this._tTime; // make sure to do the parentToChildTotalTime() BEFORE setting the new _ts because the old one must be used in that calculation.
    // future addition? Up side: fast and minimal file size. Down side: only works on this animation; if a timeline is reversed, for example, its childrens' onReverse wouldn't get called.
    //(+value < 0 && this._rts >= 0) && _callback(this, "onReverse", true);
    // prioritize rendering where the parent's playhead lines up instead of this._tTime because there could be a tween that's animating another tween's timeScale in the same rendering loop (same parent), thus if the timeScale tween renders first, it would alter _start BEFORE _tTime was set on that tick (in the rendering loop), effectively freezing it until the timeScale tween finishes.

this._rts = +value || 0;
    this._ts = this._ps || value === -_tinyNum ? 0 : this._rts; // _ts is the functional timeScale which would be 0 if the animation is paused.

this.totalTime(_clamp(-this._delay, this._tDur, tTime), true);

_setEnd(this); // if parent.smoothChildTiming was false, the end time didn't get updated in the _alignPlayhead() method, so do it here.

return _recacheAncestors(this);
  };

_proto.paused = function paused(value) {
    if (!arguments.length) {
      return this._ps;
    }

if (this._ps !== value) {
      this._ps = value;

if (value) {
        this._pTime = this._tTime || Math.max(-this._delay, this.rawTime()); // if the pause occurs during the delay phase, make sure that's factored in when resuming.

this._ts = this._act = 0; // _ts is the functional timeScale, so a paused tween would effectively have a timeScale of 0. We record the "real" timeScale as _rts (recorded time scale)
      } else {
        _wake();

this._ts = this._rts; //only defer to _pTime (pauseTime) if tTime is zero. Remember, someone could pause() an animation, then scrub the playhead and resume(). If the parent doesn't have smoothChildTiming, we render at the rawTime() because the startTime won't get updated.

this.totalTime(this.parent && !this.parent.smoothChildTiming ? this.rawTime() : this._tTime || this._pTime, this.progress() === 1 && Math.abs(this._zTime) !== _tinyNum && (this._tTime -= _tinyNum)); // edge case: animation.progress(1).pause().play() wouldn't render again because the playhead is already at the end, but the call to totalTime() below will add it back to its parent...and not remove it again (since removing only happens upon rendering at a new time). Offsetting the _tTime slightly is done simply to cause the final render in totalTime() that'll pop it off its timeline (if autoRemoveChildren is true, of course). Check to make sure _zTime isn't -_tinyNum to avoid an edge case where the playhead is pushed to the end but INSIDE a tween/callback, the timeline itself is paused thus halting rendering and leaving a few unrendered. When resuming, it wouldn't render those otherwise.
      }
    }

return this;
  };

_proto.startTime = function startTime(value) {
    if (arguments.length) {
      this._start = value;
      var parent = this.parent || this._dp;
      parent && (parent._sort || !this.parent) && _addToTimeline(parent, this, value - this._delay);
      return this;
    }

return this._start;
  };

_proto.endTime = function endTime(includeRepeats) {
    return this._start + (_isNotFalse(includeRepeats) ? this.totalDuration() : this.duration()) / Math.abs(this._ts || 1);
  };

_proto.rawTime = function rawTime(wrapRepeats) {
    var parent = this.parent || this._dp; // _dp = detached parent

return !parent ? this._tTime : wrapRepeats && (!this._ts || this._repeat && this._time && this.totalProgress() < 1) ? this._tTime % (this._dur + this._rDelay) : !this._ts ? this._tTime : _parentToChildTotalTime(parent.rawTime(wrapRepeats), this);
  };

_proto.revert = function revert(config) {
    if (config === void 0) {
      config = _revertConfig;
    }

var prevIsReverting = _reverting;
    _reverting = config;

if (this._initted || this._startAt) {
      this.timeline && this.timeline.revert(config);
      this.totalTime(-0.01, config.suppressEvents);
    }

this.data !== "nested" && config.kill !== false && this.kill();
    _reverting = prevIsReverting;
    return this;
  };

_proto.globalTime = function globalTime(rawTime) {
    var animation = this,
        time = arguments.length ? rawTime : animation.rawTime();

while (animation) {
      time = animation._start + time / (animation._ts || 1);
      animation = animation._dp;
    }

return !this.parent && this._sat ? this._sat.vars.immediateRender ? -1 : this._sat.globalTime(rawTime) : time; // the _startAt tweens for .fromTo() and .from() that have immediateRender should always be FIRST in the timeline (important for context.revert()). "_sat" stands for _startAtTween, referring to the parent tween that created the _startAt. We must discern if that tween had immediateRender so that we can know whether or not to prioritize it in revert().
  };

_proto.repeat = function repeat(value) {
    if (arguments.length) {
      this._repeat = value === Infinity ? -2 : value;
      return _onUpdateTotalDuration(this);
    }

return this._repeat === -2 ? Infinity : this._repeat;
  };

_proto.repeatDelay = function repeatDelay(value) {
    if (arguments.length) {
      var time = this._time;
      this._rDelay = value;

_onUpdateTotalDuration(this);

return time ? this.time(time) : this;
    }

return this._rDelay;
  };

_proto.yoyo = function yoyo(value) {
    if (arguments.length) {
      this._yoyo = value;
      return this;
    }

return this._yoyo;
  };

_proto.seek = function seek(position, suppressEvents) {
    return this.totalTime(_parsePosition(this, position), _isNotFalse(suppressEvents));
  };

_proto.restart = function restart(includeDelay, suppressEvents) {
    return this.play().totalTime(includeDelay ? -this._delay : 0, _isNotFalse(suppressEvents));
  };

_proto.play = function play(from, suppressEvents) {
    from != null && this.seek(from, suppressEvents);
    return this.reversed(false).paused(false);
  };

_proto.reverse = function reverse(from, suppressEvents) {
    from != null && this.seek(from || this.totalDuration(), suppressEvents);
    return this.reversed(true).paused(false);
  };

_proto.pause = function pause(atTime, suppressEvents) {
    atTime != null && this.seek(atTime, suppressEvents);
    return this.paused(true);
  };

_proto.resume = function resume() {
    return this.paused(false);
  };

_proto.reversed = function reversed(value) {
    if (arguments.length) {
      !!value !== this.reversed() && this.timeScale(-this._rts || (value ? -_tinyNum : 0)); // in case timeScale is zero, reversing would have no effect so we use _tinyNum.

return this;
    }

return this._rts < 0;
  };

_proto.invalidate = function invalidate() {
    this._initted = this._act = 0;
    this._zTime = -_tinyNum;
    return this;
  };

_proto.isActive = function isActive() {
    var parent = this.parent || this._dp,
        start = this._start,
        rawTime;
    return !!(!parent || this._ts && this._initted && parent.isActive() && (rawTime = parent.rawTime(true)) >= start && rawTime < this.endTime(true) - _tinyNum);
  };

_proto.eventCallback = function eventCallback(type, callback, params) {
    var vars = this.vars;

if (arguments.length > 1) {
      if (!callback) {
        delete vars[type];
      } else {
        vars[type] = callback;
        params && (vars[type + "Params"] = params);
        type === "onUpdate" && (this._onUpdate = callback);
      }

return this;
    }

return vars[type];
  };

_proto.then = function then(onFulfilled) {
    var self = this;
    return new Promise(function (resolve) {
      var f = _isFunction(onFulfilled) ? onFulfilled : _passThrough,
          _resolve = function _resolve() {
        var _then = self.then;
        self.then = null; // temporarily null the then() method to avoid an infinite loop (see https://github.com/greensock/GSAP/issues/322)

_isFunction(f) && (f = f(self)) && (f.then || f === self) && (self.then = _then);
        resolve(f);
        self.then = _then;
      };

if (self._initted && self.totalProgress() === 1 && self._ts >= 0 || !self._tTime && self._ts < 0) {
        _resolve();
      } else {
        self._prom = _resolve;
      }
    });
  };

_proto.kill = function kill() {
    _interrupt(this);
  };

return Animation;
}();

_setDefaults(Animation.prototype, {
  _time: 0,
  _start: 0,
  _end: 0,
  _tTime: 0,
  _tDur: 0,
  _dirty: 0,
  _repeat: 0,
  _yoyo: false,
  parent: null,
  _initted: false,
  _rDelay: 0,
  _ts: 1,
  _dp: 0,
  ratio: 0,
  _zTime: -_tinyNum,
  _prom: 0,
  _ps: false,
  _rts: 1
});
/*
 * -------------------------------------------------
 * TIMELINE
 * -------------------------------------------------
 */

var Timeline = /*#__PURE__*/function (_Animation) {
  _inheritsLoose(Timeline, _Animation);

function Timeline(vars, position) {
    var _this;

if (vars === void 0) {
      vars = {};
    }

_this = _Animation.call(this, vars) || this;
    _this.labels = {};
    _this.smoothChildTiming = !!vars.smoothChildTiming;
    _this.autoRemoveChildren = !!vars.autoRemoveChildren;
    _this._sort = _isNotFalse(vars.sortChildren);
    _globalTimeline && _addToTimeline(vars.parent || _globalTimeline, _assertThisInitialized(_this), position);
    vars.reversed && _this.reverse();
    vars.paused && _this.paused(true);
    vars.scrollTrigger && _scrollTrigger(_assertThisInitialized(_this), vars.scrollTrigger);
    return _this;
  }

var _proto2 = Timeline.prototype;

_proto2.to = function to(targets, vars, position) {
    _createTweenType(0, arguments, this);

return this;
  };

_proto2.from = function from(targets, vars, position) {
    _createTweenType(1, arguments, this);

return this;
  };

_proto2.fromTo = function fromTo(targets, fromVars, toVars, position) {
    _createTweenType(2, arguments, this);

return this;
  };

_proto2.set = function set(targets, vars, position) {
    vars.duration = 0;
    vars.parent = this;
    _inheritDefaults(vars).repeatDelay || (vars.repeat = 0);
    vars.immediateRender = !!vars.immediateRender;
    new Tween(targets, vars, _parsePosition(this, position), 1);
    return this;
  };

_proto2.call = function call(callback, params, position) {
    return _addToTimeline(this, Tween.delayedCall(0, callback, params), position);
  } //ONLY for backward compatibility! Maybe delete?
  ;

_proto2.staggerTo = function staggerTo(targets, duration, vars, stagger, position, onCompleteAll, onCompleteAllParams) {
    vars.duration = duration;
    vars.stagger = vars.stagger || stagger;
    vars.onComplete = onCompleteAll;
    vars.onCompleteParams = onCompleteAllParams;
    vars.parent = this;
    new Tween(targets, vars, _parsePosition(this, position));
    return this;
  };

_proto2.staggerFrom = function staggerFrom(targets, duration, vars, stagger, position, onCompleteAll, onCompleteAllParams) {
    vars.runBackwards = 1;
    _inheritDefaults(vars).immediateRender = _isNotFalse(vars.immediateRender);
    return this.staggerTo(targets, duration, vars, stagger, position, onCompleteAll, onCompleteAllParams);
  };

_proto2.staggerFromTo = function staggerFromTo(targets, duration, fromVars, toVars, stagger, position, onCompleteAll, onCompleteAllParams) {
    toVars.startAt = fromVars;
    _inheritDefaults(toVars).immediateRender = _isNotFalse(toVars.immediateRender);
    return this.staggerTo(targets, duration, toVars, stagger, position, onCompleteAll, onCompleteAllParams);
  };

_proto2.render = function render(totalTime, suppressEvents, force) {
    var prevTime = this._time,
        tDur = this._dirty ? this.totalDuration() : this._tDur,
        dur = this._dur,
        tTime = totalTime <= 0 ? 0 : _roundPrecise(totalTime),
        // if a paused timeline is resumed (or its _start is updated for another reason...which rounds it), that could result in the playhead shifting a **tiny** amount and a zero-duration child at that spot may get rendered at a different ratio, like its totalTime in render() may be 1e-17 instead of 0, for example.
    crossingStart = this._zTime < 0 !== totalTime < 0 && (this._initted || !dur),
        time,
        child,
        next,
        iteration,
        cycleDuration,
        prevPaused,
        pauseTween,
        timeScale,
        prevStart,
        prevIteration,
        yoyo,
        isYoyo;
    this !== _globalTimeline && tTime > tDur && totalTime >= 0 && (tTime = tDur);

if (tTime !== this._tTime || force || crossingStart) {
      if (prevTime !== this._time && dur) {
        //if totalDuration() finds a child with a negative startTime and smoothChildTiming is true, things get shifted around internally so we need to adjust the time accordingly. For example, if a tween starts at -30 we must shift EVERYTHING forward 30 seconds and move this timeline's startTime backward by 30 seconds so that things align with the playhead (no jump).
        tTime += this._time - prevTime;
        totalTime += this._time - prevTime;
      }

time = tTime;
      prevStart = this._start;
      timeScale = this._ts;
      prevPaused = !timeScale;

if (crossingStart) {
        dur || (prevTime = this._zTime); //when the playhead arrives at EXACTLY time 0 (right on top) of a zero-duration timeline, we need to discern if events are suppressed so that when the playhead moves again (next time), it'll trigger the callback. If events are NOT suppressed, obviously the callback would be triggered in this render. Basically, the callback should fire either when the playhead ARRIVES or LEAVES this exact spot, not both. Imagine doing a timeline.seek(0) and there's a callback that sits at 0. Since events are suppressed on that seek() by default, nothing will fire, but when the playhead moves off of that position, the callback should fire. This behavior is what people intuitively expect.

(totalTime || !suppressEvents) && (this._zTime = totalTime);
      }

if (this._repeat) {
        //adjust the time for repeats and yoyos
        yoyo = this._yoyo;
        cycleDuration = dur + this._rDelay;

if (this._repeat < -1 && totalTime < 0) {
          return this.totalTime(cycleDuration * 100 + totalTime, suppressEvents, force);
        }

time = _roundPrecise(tTime % cycleDuration); //round to avoid floating point errors. (4 % 0.8 should be 0 but some browsers report it as 0.79999999!)

if (tTime === tDur) {
          // the tDur === tTime is for edge cases where there's a lengthy decimal on the duration and it may reach the very end but the time is rendered as not-quite-there (remember, tDur is rounded to 4 decimals whereas dur isn't)
          iteration = this._repeat;
          time = dur;
        } else {
          iteration = ~~(tTime / cycleDuration);

if (iteration && iteration === tTime / cycleDuration) {
            time = dur;
            iteration--;
          }

time > dur && (time = dur);
        }

prevIteration = _animationCycle(this._tTime, cycleDuration);
        !prevTime && this._tTime && prevIteration !== iteration && (prevIteration = iteration); // edge case - if someone does addPause() at the very beginning of a repeating timeline, that pause is technically at the same spot as the end which causes this._time to get set to 0 when the totalTime would normally place the playhead at the end. See https://greensock.com/forums/topic/23823-closing-nav-animation-not-working-on-ie-and-iphone-6-maybe-other-older-browser/?tab=comments#comment-113005

if (yoyo && iteration & 1) {
          time = dur - time;
          isYoyo = 1;
        }
        /*
        make sure children at the end/beginning of the timeline are rendered properly. If, for example,
        a 3-second long timeline rendered at 2.9 seconds previously, and now renders at 3.2 seconds (which
        would get translated to 2.8 seconds if the timeline yoyos or 0.2 seconds if it just repeats), there
        could be a callback or a short tween that's at 2.95 or 3 seconds in which wouldn't render. So
        we need to push the timeline to the end (and/or beginning depending on its yoyo value). Also we must
        ensure that zero-duration tweens at the very beginning or end of the Timeline work.
        */

if (iteration !== prevIteration && !this._lock) {
          var rewinding = yoyo && prevIteration & 1,
              doesWrap = rewinding === (yoyo && iteration & 1);
          iteration < prevIteration && (rewinding = !rewinding);
          prevTime = rewinding ? 0 : dur;
          this._lock = 1;
          this.render(prevTime || (isYoyo ? 0 : _roundPrecise(iteration * cycleDuration)), suppressEvents, !dur)._lock = 0;
          this._tTime = tTime; // if a user gets the iteration() inside the onRepeat, for example, it should be accurate.

!suppressEvents && this.parent && _callback(this, "onRepeat");
          this.vars.repeatRefresh && !isYoyo && (this.invalidate()._lock = 1);

if (prevTime && prevTime !== this._time || prevPaused !== !this._ts || this.vars.onRepeat && !this.parent && !this._act) {
            // if prevTime is 0 and we render at the very end, _time will be the end, thus won't match. So in this edge case, prevTime won't match _time but that's okay. If it gets killed in the onRepeat, eject as well.
            return this;
          }

dur = this._dur; // in case the duration changed in the onRepeat

tDur = this._tDur;

if (doesWrap) {
            this._lock = 2;
            prevTime = rewinding ? dur : -0.0001;
            this.render(prevTime, true);
            this.vars.repeatRefresh && !isYoyo && this.invalidate();
          }

this._lock = 0;

if (!this._ts && !prevPaused) {
            return this;
          } //in order for yoyoEase to work properly when there's a stagger, we must swap out the ease in each sub-tween.

_propagateYoyoEase(this, isYoyo);
        }
      }

if (this._hasPause && !this._forcing && this._lock < 2) {
        pauseTween = _findNextPauseTween(this, _roundPrecise(prevTime), _roundPrecise(time));

if (pauseTween) {
          tTime -= time - (time = pauseTween._start);
        }
      }

this._tTime = tTime;
      this._time = time;
      this._act = !timeScale; //as long as it's not paused, force it to be active so that if the user renders independent of the parent timeline, it'll be forced to re-render on the next tick.

if (!this._initted) {
        this._onUpdate = this.vars.onUpdate;
        this._initted = 1;
        this._zTime = totalTime;
        prevTime = 0; // upon init, the playhead should always go forward; someone could invalidate() a completed timeline and then if they restart(), that would make child tweens render in reverse order which could lock in the wrong starting values if they build on each other, like tl.to(obj, {x: 100}).to(obj, {x: 0}).
      }

if (!prevTime && time && !suppressEvents) {
        _callback(this, "onStart");

if (this._tTime !== tTime) {
          // in case the onStart triggered a render at a different spot, eject. Like if someone did animation.pause(0.5) or something inside the onStart.
          return this;
        }
      }

if (time >= prevTime && totalTime >= 0) {
        child = this._first;

while (child) {
          next = child._next;

if ((child._act || time >= child._start) && child._ts && pauseTween !== child) {
            if (child.parent !== this) {
              // an extreme edge case - the child's render could do something like kill() the "next" one in the linked list, or reparent it. In that case we must re-initiate the whole render to be safe.
              return this.render(totalTime, suppressEvents, force);
            }

child.render(child._ts > 0 ? (time - child._start) * child._ts : (child._dirty ? child.totalDuration() : child._tDur) + (time - child._start) * child._ts, suppressEvents, force);

if (time !== this._time || !this._ts && !prevPaused) {
              //in case a tween pauses or seeks the timeline when rendering, like inside of an onUpdate/onComplete
              pauseTween = 0;
              next && (tTime += this._zTime = -_tinyNum); // it didn't finish rendering, so flag zTime as negative so that so that the next time render() is called it'll be forced (to render any remaining children)

break;
            }
          }

child = next;
        }
      } else {
        child = this._last;
        var adjustedTime = totalTime < 0 ? totalTime : time; //when the playhead goes backward beyond the start of this timeline, we must pass that information down to the child animations so that zero-duration tweens know whether to render their starting or ending values.

while (child) {
          next = child._prev;

if ((child._act || adjustedTime <= child._end) && child._ts && pauseTween !== child) {
            if (child.parent !== this) {
              // an extreme edge case - the child's render could do something like kill() the "next" one in the linked list, or reparent it. In that case we must re-initiate the whole render to be safe.
              return this.render(totalTime, suppressEvents, force);
            }

child.render(child._ts > 0 ? (adjustedTime - child._start) * child._ts : (child._dirty ? child.totalDuration() : child._tDur) + (adjustedTime - child._start) * child._ts, suppressEvents, force || _reverting && (child._initted || child._startAt)); // if reverting, we should always force renders of initted tweens (but remember that .fromTo() or .from() may have a _startAt but not _initted yet). If, for example, a .fromTo() tween with a stagger (which creates an internal timeline) gets reverted BEFORE some of its child tweens render for the first time, it may not properly trigger them to revert.

if (time !== this._time || !this._ts && !prevPaused) {
              //in case a tween pauses or seeks the timeline when rendering, like inside of an onUpdate/onComplete
              pauseTween = 0;
              next && (tTime += this._zTime = adjustedTime ? -_tinyNum : _tinyNum); // it didn't finish rendering, so adjust zTime so that so that the next time render() is called it'll be forced (to render any remaining children)

break;
            }
          }

child = next;
        }
      }

if (pauseTween && !suppressEvents) {
        this.pause();
        pauseTween.render(time >= prevTime ? 0 : -_tinyNum)._zTime = time >= prevTime ? 1 : -1;

if (this._ts) {
          //the callback resumed playback! So since we may have held back the playhead due to where the pause is positioned, go ahead and jump to where it's SUPPOSED to be (if no pause happened).
          this._start = prevStart; //if the pause was at an earlier time and the user resumed in the callback, it could reposition the timeline (changing its startTime), throwing things off slightly, so we make sure the _start doesn't shift.

_setEnd(this);

return this.render(totalTime, suppressEvents, force);
        }
      }

this._onUpdate && !suppressEvents && _callback(this, "onUpdate", true);
      if (tTime === tDur && this._tTime >= this.totalDuration() || !tTime && prevTime) if (prevStart === this._start || Math.abs(timeScale) !== Math.abs(this._ts)) if (!this._lock) {
        // remember, a child's callback may alter this timeline's playhead or timeScale which is why we need to add some of these checks.
        (totalTime || !dur) && (tTime === tDur && this._ts > 0 || !tTime && this._ts < 0) && _removeFromParent(this, 1); // don't remove if the timeline is reversed and the playhead isn't at 0, otherwise tl.progress(1).reverse() won't work. Only remove if the playhead is at the end and timeScale is positive, or if the playhead is at 0 and the timeScale is negative.

if (!suppressEvents && !(totalTime < 0 && !prevTime) && (tTime || prevTime || !tDur)) {
          _callback(this, tTime === tDur && totalTime >= 0 ? "onComplete" : "onReverseComplete", true);

this._prom && !(tTime < tDur && this.timeScale() > 0) && this._prom();
        }
      }
    }

return this;
  };

_proto2.add = function add(child, position) {
    var _this2 = this;

_isNumber(position) || (position = _parsePosition(this, position, child));

if (!(child instanceof Animation)) {
      if (_isArray(child)) {
        child.forEach(function (obj) {
          return _this2.add(obj, position);
        });
        return this;
      }

if (_isString(child)) {
        return this.addLabel(child, position);
      }

if (_isFunction(child)) {
        child = Tween.delayedCall(0, child);
      } else {
        return this;
      }
    }

return this !== child ? _addToTimeline(this, child, position) : this; //don't allow a timeline to be added to itself as a child!
  };

_proto2.getChildren = function getChildren(nested, tweens, timelines, ignoreBeforeTime) {
    if (nested === void 0) {
      nested = true;
    }

if (tweens === void 0) {
      tweens = true;
    }

if (timelines === void 0) {
      timelines = true;
    }

if (ignoreBeforeTime === void 0) {
      ignoreBeforeTime = -_bigNum;
    }

var a = [],
        child = this._first;

while (child) {
      if (child._start >= ignoreBeforeTime) {
        if (child instanceof Tween) {
          tweens && a.push(child);
        } else {
          timelines && a.push(child);
          nested && a.push.apply(a, child.getChildren(true, tweens, timelines));
        }
      }

child = child._next;
    }

return a;
  };

_proto2.getById = function getById(id) {
    var animations = this.getChildren(1, 1, 1),
        i = animations.length;

while (i--) {
      if (animations[i].vars.id === id) {
        return animations[i];
      }
    }
  };

_proto2.remove = function remove(child) {
    if (_isString(child)) {
      return this.removeLabel(child);
    }

if (_isFunction(child)) {
      return this.killTweensOf(child);
    }

_removeLinkedListItem(this, child);

if (child === this._recent) {
      this._recent = this._last;
    }

return _uncache(this);
  };

_proto2.totalTime = function totalTime(_totalTime2, suppressEvents) {
    if (!arguments.length) {
      return this._tTime;
    }

this._forcing = 1;

if (!this._dp && this._ts) {
      //special case for the global timeline (or any other that has no parent or detached parent).
      this._start = _roundPrecise(_ticker.time - (this._ts > 0 ? _totalTime2 / this._ts : (this.totalDuration() - _totalTime2) / -this._ts));
    }

_Animation.prototype.totalTime.call(this, _totalTime2, suppressEvents);

this._forcing = 0;
    return this;
  };

_proto2.addLabel = function addLabel(label, position) {
    this.labels[label] = _parsePosition(this, position);
    return this;
  };

_proto2.removeLabel = function removeLabel(label) {
    delete this.labels[label];
    return this;
  };

_proto2.addPause = function addPause(position, callback, params) {
    var t = Tween.delayedCall(0, callback || _emptyFunc, params);
    t.data = "isPause";
    this._hasPause = 1;
    return _addToTimeline(this, t, _parsePosition(this, position));
  };

_proto2.removePause = function removePause(position) {
    var child = this._first;
    position = _parsePosition(this, position);

while (child) {
      if (child._start === position && child.data === "isPause") {
        _removeFromParent(child);
      }

child = child._next;
    }
  };

_proto2.killTweensOf = function killTweensOf(targets, props, onlyActive) {
    var tweens = this.getTweensOf(targets, onlyActive),
        i = tweens.length;

while (i--) {
      _overwritingTween !== tweens[i] && tweens[i].kill(targets, props);
    }

return this;
  };

_proto2.getTweensOf = function getTweensOf(targets, onlyActive) {
    var a = [],
        parsedTargets = toArray(targets),
        child = this._first,
        isGlobalTime = _isNumber(onlyActive),
        // a number is interpreted as a global time. If the animation spans
    children;

while (child) {
      if (child instanceof Tween) {
        if (_arrayContainsAny(child._targets, parsedTargets) && (isGlobalTime ? (!_overwritingTween || child._initted && child._ts) && child.globalTime(0) <= onlyActive && child.globalTime(child.totalDuration()) > onlyActive : !onlyActive || child.isActive())) {
          // note: if this is for overwriting, it should only be for tweens that aren't paused and are initted.
          a.push(child);
        }
      } else if ((children = child.getTweensOf(parsedTargets, onlyActive)).length) {
        a.push.apply(a, children);
      }

child = child._next;
    }

return a;
  } // potential future feature - targets() on timelines
  // targets() {
  // 	let result = [];
  // 	this.getChildren(true, true, false).forEach(t => result.push(...t.targets()));
  // 	return result.filter((v, i) => result.indexOf(v) === i);
  // }
  ;

_proto2.tweenTo = function tweenTo(position, vars) {
    vars = vars || {};

var tl = this,
        endTime = _parsePosition(tl, position),
        _vars = vars,
        startAt = _vars.startAt,
        _onStart = _vars.onStart,
        onStartParams = _vars.onStartParams,
        immediateRender = _vars.immediateRender,
        initted,
        tween = Tween.to(tl, _setDefaults({
      ease: vars.ease || "none",
      lazy: false,
      immediateRender: false,
      time: endTime,
      overwrite: "auto",
      duration: vars.duration || Math.abs((endTime - (startAt && "time" in startAt ? startAt.time : tl._time)) / tl.timeScale()) || _tinyNum,
      onStart: function onStart() {
        tl.pause();

if (!initted) {
          var duration = vars.duration || Math.abs((endTime - (startAt && "time" in startAt ? startAt.time : tl._time)) / tl.timeScale());
          tween._dur !== duration && _setDuration(tween, duration, 0, 1).render(tween._time, true, true);
          initted = 1;
        }

_onStart && _onStart.apply(tween, onStartParams || []); //in case the user had an onStart in the vars - we don't want to overwrite it.
      }
    }, vars));

return immediateRender ? tween.render(0) : tween;
  };

_proto2.tweenFromTo = function tweenFromTo(fromPosition, toPosition, vars) {
    return this.tweenTo(toPosition, _setDefaults({
      startAt: {
        time: _parsePosition(this, fromPosition)
      }
    }, vars));
  };

_proto2.recent = function recent() {
    return this._recent;
  };

_proto2.nextLabel = function nextLabel(afterTime) {
    if (afterTime === void 0) {
      afterTime = this._time;
    }

return _getLabelInDirection(this, _parsePosition(this, afterTime));
  };

_proto2.previousLabel = function previousLabel(beforeTime) {
    if (beforeTime === void 0) {
      beforeTime = this._time;
    }

return _getLabelInDirection(this, _parsePosition(this, beforeTime), 1);
  };

_proto2.currentLabel = function currentLabel(value) {
    return arguments.length ? this.seek(value, true) : this.previousLabel(this._time + _tinyNum);
  };

_proto2.shiftChildren = function shiftChildren(amount, adjustLabels, ignoreBeforeTime) {
    if (ignoreBeforeTime === void 0) {
      ignoreBeforeTime = 0;
    }

var child = this._first,
        labels = this.labels,
        p;

while (child) {
      if (child._start >= ignoreBeforeTime) {
        child._start += amount;
        child._end += amount;
      }

child = child._next;
    }

if (adjustLabels) {
      for (p in labels) {
        if (labels[p] >= ignoreBeforeTime) {
          labels[p] += amount;
        }
      }
    }

return _uncache(this);
  };

_proto2.invalidate = function invalidate(soft) {
    var child = this._first;
    this._lock = 0;

while (child) {
      child.invalidate(soft);
      child = child._next;
    }

return _Animation.prototype.invalidate.call(this, soft);
  };

_proto2.clear = function clear(includeLabels) {
    if (includeLabels === void 0) {
      includeLabels = true;
    }

var child = this._first,
        next;

while (child) {
      next = child._next;
      this.remove(child);
      child = next;
    }

this._dp && (this._time = this._tTime = this._pTime = 0);
    includeLabels && (this.labels = {});
    return _uncache(this);
  };

_proto2.totalDuration = function totalDuration(value) {
    var max = 0,
        self = this,
        child = self._last,
        prevStart = _bigNum,
        prev,
        start,
        parent;

if (arguments.length) {
      return self.timeScale((self._repeat < 0 ? self.duration() : self.totalDuration()) / (self.reversed() ? -value : value));
    }

if (self._dirty) {
      parent = self.parent;

while (child) {
        prev = child._prev; //record it here in case the tween changes position in the sequence...

child._dirty && child.totalDuration(); //could change the tween._startTime, so make sure the animation's cache is clean before analyzing it.

start = child._start;

if (start > prevStart && self._sort && child._ts && !self._lock) {
          //in case one of the tweens shifted out of order, it needs to be re-inserted into the correct position in the sequence
          self._lock = 1; //prevent endless recursive calls - there are methods that get triggered that check duration/totalDuration when we add().

_addToTimeline(self, child, start - child._delay, 1)._lock = 0;
        } else {
          prevStart = start;
        }

if (start < 0 && child._ts) {
          //children aren't allowed to have negative startTimes unless smoothChildTiming is true, so adjust here if one is found.
          max -= start;

if (!parent && !self._dp || parent && parent.smoothChildTiming) {
            self._start += start / self._ts;
            self._time -= start;
            self._tTime -= start;
          }

self.shiftChildren(-start, false, -1e999);
          prevStart = 0;
        }

child._end > max && child._ts && (max = child._end);
        child = prev;
      }

_setDuration(self, self === _globalTimeline && self._time > max ? self._time : max, 1, 1);

self._dirty = 0;
    }

return self._tDur;
  };

Timeline.updateRoot = function updateRoot(time) {
    if (_globalTimeline._ts) {
      _lazySafeRender(_globalTimeline, _parentToChildTotalTime(time, _globalTimeline));

_lastRenderedFrame = _ticker.frame;
    }

if (_ticker.frame >= _nextGCFrame) {
      _nextGCFrame += _config.autoSleep || 120;
      var child = _globalTimeline._first;
      if (!child || !child._ts) if (_config.autoSleep && _ticker._listeners.length < 2) {
        while (child && !child._ts) {
          child = child._next;
        }

child || _ticker.sleep();
      }
    }
  };

return Timeline;
}(Animation);

_setDefaults(Timeline.prototype, {
  _lock: 0,
  _hasPause: 0,
  _forcing: 0
});

var _addComplexStringPropTween = function _addComplexStringPropTween(target, prop, start, end, setter, stringFilter, funcParam) {
  //note: we call _addComplexStringPropTween.call(tweenInstance...) to ensure that it's scoped properly. We may call it from within a plugin too, thus "this" would refer to the plugin.
  var pt = new PropTween(this._pt, target, prop, 0, 1, _renderComplexString, null, setter),
      index = 0,
      matchIndex = 0,
      result,
      startNums,
      color,
      endNum,
      chunk,
      startNum,
      hasRandom,
      a;
  pt.b = start;
  pt.e = end;
  start += ""; //ensure values are strings

end += "";

if (hasRandom = ~end.indexOf("random(")) {
    end = _replaceRandom(end);
  }

if (stringFilter) {
    a = [start, end];
    stringFilter(a, target, prop); //pass an array with the starting and ending values and let the filter do whatever it needs to the values.

start = a[0];
    end = a[1];
  }

startNums = start.match(_complexStringNumExp) || [];

while (result = _complexStringNumExp.exec(end)) {
    endNum = result[0];
    chunk = end.substring(index, result.index);

if (color) {
      color = (color + 1) % 5;
    } else if (chunk.substr(-5) === "rgba(") {
      color = 1;
    }

if (endNum !== startNums[matchIndex++]) {
      startNum = parseFloat(startNums[matchIndex - 1]) || 0; //these nested PropTweens are handled in a special way - we'll never actually call a render or setter method on them. We'll just loop through them in the parent complex string PropTween's render method.

pt._pt = {
        _next: pt._pt,
        p: chunk || matchIndex === 1 ? chunk : ",",
        //note: SVG spec allows omission of comma/space when a negative sign is wedged between two numbers, like 2.5-5.3 instead of 2.5,-5.3 but when tweening, the negative value may switch to positive, so we insert the comma just in case.
        s: startNum,
        c: endNum.charAt(1) === "=" ? _parseRelative(startNum, endNum) - startNum : parseFloat(endNum) - startNum,
        m: color && color < 4 ? Math.round : 0
      };
      index = _complexStringNumExp.lastIndex;
    }
  }

pt.c = index < end.length ? end.substring(index, end.length) : ""; //we use the "c" of the PropTween to store the final part of the string (after the last number)

pt.fp = funcParam;

if (_relExp.test(end) || hasRandom) {
    pt.e = 0; //if the end string contains relative values or dynamic random(...) values, delete the end it so that on the final render we don't actually set it to the string with += or -= characters (forces it to use the calculated value).
  }

this._pt = pt; //start the linked list with this new PropTween. Remember, we call _addComplexStringPropTween.call(tweenInstance...) to ensure that it's scoped properly. We may call it from within a plugin too, thus "this" would refer to the plugin.

return pt;
},
    _addPropTween = function _addPropTween(target, prop, start, end, index, targets, modifier, stringFilter, funcParam, optional) {
  _isFunction(end) && (end = end(index || 0, target, targets));
  var currentValue = target[prop],
      parsedStart = start !== "get" ? start : !_isFunction(currentValue) ? currentValue : funcParam ? target[prop.indexOf("set") || !_isFunction(target["get" + prop.substr(3)]) ? prop : "get" + prop.substr(3)](funcParam) : target[prop](),
      setter = !_isFunction(currentValue) ? _setterPlain : funcParam ? _setterFuncWithParam : _setterFunc,
      pt;

if (_isString(end)) {
    if (~end.indexOf("random(")) {
      end = _replaceRandom(end);
    }

if (end.charAt(1) === "=") {
      pt = _parseRelative(parsedStart, end) + (getUnit(parsedStart) || 0);

if (pt || pt === 0) {
        // to avoid isNaN, like if someone passes in a value like "!= whatever"
        end = pt;
      }
    }
  }

if (!optional || parsedStart !== end || _forceAllPropTweens) {
    if (!isNaN(parsedStart * end) && end !== "") {
      // fun fact: any number multiplied by "" is evaluated as the number 0!
      pt = new PropTween(this._pt, target, prop, +parsedStart || 0, end - (parsedStart || 0), typeof currentValue === "boolean" ? _renderBoolean : _renderPlain, 0, setter);
      funcParam && (pt.fp = funcParam);
      modifier && pt.modifier(modifier, this, target);
      return this._pt = pt;
    }

!currentValue && !(prop in target) && _missingPlugin(prop, end);
    return _addComplexStringPropTween.call(this, target, prop, parsedStart, end, setter, stringFilter || _config.stringFilter, funcParam);
  }
},
    //creates a copy of the vars object and processes any function-based values (putting the resulting values directly into the copy) as well as strings with "random()" in them. It does NOT process relative values.
_processVars = function _processVars(vars, index, target, targets, tween) {
  _isFunction(vars) && (vars = _parseFuncOrString(vars, tween, index, target, targets));

if (!_isObject(vars) || vars.style && vars.nodeType || _isArray(vars) || _isTypedArray(vars)) {
    return _isString(vars) ? _parseFuncOrString(vars, tween, index, target, targets) : vars;
  }

var copy = {},
      p;

for (p in vars) {
    copy[p] = _parseFuncOrString(vars[p], tween, index, target, targets);
  }

return copy;
},
    _checkPlugin = function _checkPlugin(property, vars, tween, index, target, targets) {
  var plugin, pt, ptLookup, i;

if (_plugins[property] && (plugin = new _plugins[property]()).init(target, plugin.rawVars ? vars[property] : _processVars(vars[property], index, target, targets, tween), tween, index, targets) !== false) {
    tween._pt = pt = new PropTween(tween._pt, target, property, 0, 1, plugin.render, plugin, 0, plugin.priority);

if (tween !== _quickTween) {
      ptLookup = tween._ptLookup[tween._targets.indexOf(target)]; //note: we can't use tween._ptLookup[index] because for staggered tweens, the index from the fullTargets array won't match what it is in each individual tween that spawns from the stagger.

i = plugin._props.length;

while (i--) {
        ptLookup[plugin._props[i]] = pt;
      }
    }
  }

return plugin;
},
    _overwritingTween,
    //store a reference temporarily so we can avoid overwriting itself.
_forceAllPropTweens,
    _initTween = function _initTween(tween, time, tTime) {
  var vars = tween.vars,
      ease = vars.ease,
      startAt = vars.startAt,
      immediateRender = vars.immediateRender,
      lazy = vars.lazy,
      onUpdate = vars.onUpdate,
      onUpdateParams = vars.onUpdateParams,
      callbackScope = vars.callbackScope,
      runBackwards = vars.runBackwards,
      yoyoEase = vars.yoyoEase,
      keyframes = vars.keyframes,
      autoRevert = vars.autoRevert,
      dur = tween._dur,
      prevStartAt = tween._startAt,
      targets = tween._targets,
      parent = tween.parent,
      fullTargets = parent && parent.data === "nested" ? parent.vars.targets : targets,
      autoOverwrite = tween._overwrite === "auto" && !_suppressOverwrites,
      tl = tween.timeline,
      cleanVars,
      i,
      p,
      pt,
      target,
      hasPriority,
      gsData,
      harness,
      plugin,
      ptLookup,
      index,
      harnessVars,
      overwritten;
  tl && (!keyframes || !ease) && (ease = "none");
  tween._ease = _parseEase(ease, _defaults.ease);
  tween._yEase = yoyoEase ? _invertEase(_parseEase(yoyoEase === true ? ease : yoyoEase, _defaults.ease)) : 0;

if (yoyoEase && tween._yoyo && !tween._repeat) {
    //there must have been a parent timeline with yoyo:true that is currently in its yoyo phase, so flip the eases.
    yoyoEase = tween._yEase;
    tween._yEase = tween._ease;
    tween._ease = yoyoEase;
  }

tween._from = !tl && !!vars.runBackwards; //nested timelines should never run backwards - the backwards-ness is in the child tweens.

if (!tl || keyframes && !vars.stagger) {
    //if there's an internal timeline, skip all the parsing because we passed that task down the chain.
    harness = targets[0] ? _getCache(targets[0]).harness : 0;
    harnessVars = harness && vars[harness.prop]; //someone may need to specify CSS-specific values AND non-CSS values, like if the element has an "x" property plus it's a standard DOM element. We allow people to distinguish by wrapping plugin-specific stuff in a css:{} object for example.

cleanVars = _copyExcluding(vars, _reservedProps);

if (prevStartAt) {
      prevStartAt._zTime < 0 && prevStartAt.progress(1); // in case it's a lazy startAt that hasn't rendered yet.

time < 0 && runBackwards && immediateRender && !autoRevert ? prevStartAt.render(-1, true) : prevStartAt.revert(runBackwards && dur ? _revertConfigNoKill : _startAtRevertConfig); // if it's a "startAt" (not "from()" or runBackwards: true), we only need to do a shallow revert (keep transforms cached in CSSPlugin)
      // don't just _removeFromParent(prevStartAt.render(-1, true)) because that'll leave inline styles. We're creating a new _startAt for "startAt" tweens that re-capture things to ensure that if the pre-tween values changed since the tween was created, they're recorded.

prevStartAt._lazy = 0;
    }

if (startAt) {
      _removeFromParent(tween._startAt = Tween.set(targets, _setDefaults({
        data: "isStart",
        overwrite: false,
        parent: parent,
        immediateRender: true,
        lazy: !prevStartAt && _isNotFalse(lazy),
        startAt: null,
        delay: 0,
        onUpdate: onUpdate,
        onUpdateParams: onUpdateParams,
        callbackScope: callbackScope,
        stagger: 0
      }, startAt))); //copy the properties/values into a new object to avoid collisions, like var to = {x:0}, from = {x:500}; timeline.fromTo(e, from, to).fromTo(e, to, from);

tween._startAt._dp = 0; // don't allow it to get put back into root timeline! Like when revert() is called and totalTime() gets set.

tween._startAt._sat = tween; // used in globalTime(). _sat stands for _startAtTween

time < 0 && (_reverting || !immediateRender && !autoRevert) && tween._startAt.revert(_revertConfigNoKill); // rare edge case, like if a render is forced in the negative direction of a non-initted tween.

if (immediateRender) {
        if (dur && time <= 0 && tTime <= 0) {
          // check tTime here because in the case of a yoyo tween whose playhead gets pushed to the end like tween.progress(1), we should allow it through so that the onComplete gets fired properly.
          time && (tween._zTime = time);
          return; //we skip initialization here so that overwriting doesn't occur until the tween actually begins. Otherwise, if you create several immediateRender:true tweens of the same target/properties to drop into a Timeline, the last one created would overwrite the first ones because they didn't get placed into the timeline yet before the first render occurs and kicks in overwriting.
        }
      }
    } else if (runBackwards && dur) {
      //from() tweens must be handled uniquely: their beginning values must be rendered but we don't want overwriting to occur yet (when time is still 0). Wait until the tween actually begins before doing all the routines like overwriting. At that time, we should render at the END of the tween to ensure that things initialize correctly (remember, from() tweens go backwards)
      if (!prevStartAt) {
        time && (immediateRender = false); //in rare cases (like if a from() tween runs and then is invalidate()-ed), immediateRender could be true but the initial forced-render gets skipped, so there's no need to force the render in this context when the _time is greater than 0

p = _setDefaults({
          overwrite: false,
          data: "isFromStart",
          //we tag the tween with as "isFromStart" so that if [inside a plugin] we need to only do something at the very END of a tween, we have a way of identifying this tween as merely the one that's setting the beginning values for a "from()" tween. For example, clearProps in CSSPlugin should only get applied at the very END of a tween and without this tag, from(...{height:100, clearProps:"height", delay:1}) would wipe the height at the beginning of the tween and after 1 second, it'd kick back in.
          lazy: immediateRender && !prevStartAt && _isNotFalse(lazy),
          immediateRender: immediateRender,
          //zero-duration tweens render immediately by default, but if we're not specifically instructed to render this tween immediately, we should skip this and merely _init() to record the starting values (rendering them immediately would push them to completion which is wasteful in that case - we'd have to render(-1) immediately after)
          stagger: 0,
          parent: parent //ensures that nested tweens that had a stagger are handled properly, like gsap.from(".class", {y:gsap.utils.wrap([-100,100])})

}, cleanVars);
        harnessVars && (p[harness.prop] = harnessVars); // in case someone does something like .from(..., {css:{}})

_removeFromParent(tween._startAt = Tween.set(targets, p));

tween._startAt._dp = 0; // don't allow it to get put back into root timeline!

tween._startAt._sat = tween; // used in globalTime()

time < 0 && (_reverting ? tween._startAt.revert(_revertConfigNoKill) : tween._startAt.render(-1, true));
        tween._zTime = time;

if (!immediateRender) {
          _initTween(tween._startAt, _tinyNum, _tinyNum); //ensures that the initial values are recorded

} else if (!time) {
          return;
        }
      }
    }

tween._pt = tween._ptCache = 0;
    lazy = dur && _isNotFalse(lazy) || lazy && !dur;

for (i = 0; i < targets.length; i++) {
      target = targets[i];
      gsData = target._gsap || _harness(targets)[i]._gsap;
      tween._ptLookup[i] = ptLookup = {};
      _lazyLookup[gsData.id] && _lazyTweens.length && _lazyRender(); //if other tweens of the same target have recently initted but haven't rendered yet, we've got to force the render so that the starting values are correct (imagine populating a timeline with a bunch of sequential tweens and then jumping to the end)

index = fullTargets === targets ? i : fullTargets.indexOf(target);

if (harness && (plugin = new harness()).init(target, harnessVars || cleanVars, tween, index, fullTargets) !== false) {
        tween._pt = pt = new PropTween(tween._pt, target, plugin.name, 0, 1, plugin.render, plugin, 0, plugin.priority);

plugin._props.forEach(function (name) {
          ptLookup[name] = pt;
        });

plugin.priority && (hasPriority = 1);
      }

if (!harness || harnessVars) {
        for (p in cleanVars) {
          if (_plugins[p] && (plugin = _checkPlugin(p, cleanVars, tween, index, target, fullTargets))) {
            plugin.priority && (hasPriority = 1);
          } else {
            ptLookup[p] = pt = _addPropTween.call(tween, target, p, "get", cleanVars[p], index, fullTargets, 0, vars.stringFilter);
          }
        }
      }

tween._op && tween._op[i] && tween.kill(target, tween._op[i]);

if (autoOverwrite && tween._pt) {
        _overwritingTween = tween;

_globalTimeline.killTweensOf(target, ptLookup, tween.globalTime(time)); // make sure the overwriting doesn't overwrite THIS tween!!!

overwritten = !tween.parent;
        _overwritingTween = 0;
      }

tween._pt && lazy && (_lazyLookup[gsData.id] = 1);
    }

hasPriority && _sortPropTweensByPriority(tween);
    tween._onInit && tween._onInit(tween); //plugins like RoundProps must wait until ALL of the PropTweens are instantiated. In the plugin's init() function, it sets the _onInit on the tween instance. May not be pretty/intuitive, but it's fast and keeps file size down.
  }

tween._onUpdate = onUpdate;
  tween._initted = (!tween._op || tween._pt) && !overwritten; // if overwrittenProps resulted in the entire tween being killed, do NOT flag it as initted or else it may render for one tick.

keyframes && time <= 0 && tl.render(_bigNum, true, true); // if there's a 0% keyframe, it'll render in the "before" state for any staggered/delayed animations thus when the following tween initializes, it'll use the "before" state instead of the "after" state as the initial values.
},
    _updatePropTweens = function _updatePropTweens(tween, property, value, start, startIsRelative, ratio, time) {
  var ptCache = (tween._pt && tween._ptCache || (tween._ptCache = {}))[property],
      pt,
      rootPT,
      lookup,
      i;

if (!ptCache) {
    ptCache = tween._ptCache[property] = [];
    lookup = tween._ptLookup;
    i = tween._targets.length;

while (i--) {
      pt = lookup[i][property];

if (pt && pt.d && pt.d._pt) {
        // it's a plugin, so find the nested PropTween
        pt = pt.d._pt;

while (pt && pt.p !== property && pt.fp !== property) {
          // "fp" is functionParam for things like setting CSS variables which require .setProperty("--var-name", value)
          pt = pt._next;
        }
      }

if (!pt) {
        // there is no PropTween associated with that property, so we must FORCE one to be created and ditch out of this
        // if the tween has other properties that already rendered at new positions, we'd normally have to rewind to put them back like tween.render(0, true) before forcing an _initTween(), but that can create another edge case like tweening a timeline's progress would trigger onUpdates to fire which could move other things around. It's better to just inform users that .resetTo() should ONLY be used for tweens that already have that property. For example, you can't gsap.to(...{ y: 0 }) and then tween.restTo("x", 200) for example.
        _forceAllPropTweens = 1; // otherwise, when we _addPropTween() and it finds no change between the start and end values, it skips creating a PropTween (for efficiency...why tween when there's no difference?) but in this case we NEED that PropTween created so we can edit it.

tween.vars[property] = "+=0";

_initTween(tween, time);

_forceAllPropTweens = 0;
        return 1;
      }

ptCache.push(pt);
    }
  }

i = ptCache.length;

while (i--) {
    rootPT = ptCache[i];
    pt = rootPT._pt || rootPT; // complex values may have nested PropTweens. We only accommodate the FIRST value.

pt.s = (start || start === 0) && !startIsRelative ? start : pt.s + (start || 0) + ratio * pt.c;
    pt.c = value - pt.s;
    rootPT.e && (rootPT.e = _round(value) + getUnit(rootPT.e)); // mainly for CSSPlugin (end value)

rootPT.b && (rootPT.b = pt.s + getUnit(rootPT.b)); // (beginning value)
  }
},
    _addAliasesToVars = function _addAliasesToVars(targets, vars) {
  var harness = targets[0] ? _getCache(targets[0]).harness : 0,
      propertyAliases = harness && harness.aliases,
      copy,
      p,
      i,
      aliases;

if (!propertyAliases) {
    return vars;
  }

copy = _merge({}, vars);

for (p in propertyAliases) {
    if (p in copy) {
      aliases = propertyAliases[p].split(",");
      i = aliases.length;

while (i--) {
        copy[aliases[i]] = copy[p];
      }
    }
  }

return copy;
},
    // parses multiple formats, like {"0%": {x: 100}, {"50%": {x: -20}} and { x: {"0%": 100, "50%": -20} }, and an "ease" can be set on any object. We populate an "allProps" object with an Array for each property, like {x: [{}, {}], y:[{}, {}]} with data for each property tween. The objects have a "t" (time), "v", (value), and "e" (ease) property. This allows us to piece together a timeline later.
_parseKeyframe = function _parseKeyframe(prop, obj, allProps, easeEach) {
  var ease = obj.ease || easeEach || "power1.inOut",
      p,
      a;

if (_isArray(obj)) {
    a = allProps[prop] || (allProps[prop] = []); // t = time (out of 100), v = value, e = ease

obj.forEach(function (value, i) {
      return a.push({
        t: i / (obj.length - 1) * 100,
        v: value,
        e: ease
      });
    });
  } else {
    for (p in obj) {
      a = allProps[p] || (allProps[p] = []);
      p === "ease" || a.push({
        t: parseFloat(prop),
        v: obj[p],
        e: ease
      });
    }
  }
},
    _parseFuncOrString = function _parseFuncOrString(value, tween, i, target, targets) {
  return _isFunction(value) ? value.call(tween, i, target, targets) : _isString(value) && ~value.indexOf("random(") ? _replaceRandom(value) : value;
},
    _staggerTweenProps = _callbackNames + "repeat,repeatDelay,yoyo,repeatRefresh,yoyoEase,autoRevert",
    _staggerPropsToSkip = {};

_forEachName(_staggerTweenProps + ",id,stagger,delay,duration,paused,scrollTrigger", function (name) {
  return _staggerPropsToSkip[name] = 1;
});
/*
 * --------------------------------------------------------------------------------------
 * TWEEN
 * --------------------------------------------------------------------------------------
 */

var Tween = /*#__PURE__*/function (_Animation2) {
  _inheritsLoose(Tween, _Animation2);

function Tween(targets, vars, position, skipInherit) {
    var _this3;

if (typeof vars === "number") {
      position.duration = vars;
      vars = position;
      position = null;
    }

_this3 = _Animation2.call(this, skipInherit ? vars : _inheritDefaults(vars)) || this;
    var _this3$vars = _this3.vars,
        duration = _this3$vars.duration,
        delay = _this3$vars.delay,
        immediateRender = _this3$vars.immediateRender,
        stagger = _this3$vars.stagger,
        overwrite = _this3$vars.overwrite,
        keyframes = _this3$vars.keyframes,
        defaults = _this3$vars.defaults,
        scrollTrigger = _this3$vars.scrollTrigger,
        yoyoEase = _this3$vars.yoyoEase,
        parent = vars.parent || _globalTimeline,
        parsedTargets = (_isArray(targets) || _isTypedArray(targets) ? _isNumber(targets[0]) : "length" in vars) ? [targets] : toArray(targets),
        tl,
        i,
        copy,
        l,
        p,
        curTarget,
        staggerFunc,
        staggerVarsToMerge;
    _this3._targets = parsedTargets.length ? _harness(parsedTargets) : _warn("GSAP target " + targets + " not found. https://greensock.com", !_config.nullTargetWarn) || [];
    _this3._ptLookup = []; //PropTween lookup. An array containing an object for each target, having keys for each tweening property

_this3._overwrite = overwrite;

if (keyframes || stagger || _isFuncOrString(duration) || _isFuncOrString(delay)) {
      vars = _this3.vars;
      tl = _this3.timeline = new Timeline({
        data: "nested",
        defaults: defaults || {},
        targets: parent && parent.data === "nested" ? parent.vars.targets : parsedTargets
      }); // we need to store the targets because for staggers and keyframes, we end up creating an individual tween for each but function-based values need to know the index and the whole Array of targets.

tl.kill();
      tl.parent = tl._dp = _assertThisInitialized(_this3);
      tl._start = 0;

if (stagger || _isFuncOrString(duration) || _isFuncOrString(delay)) {
        l = parsedTargets.length;
        staggerFunc = stagger && distribute(stagger);

if (_isObject(stagger)) {
          //users can pass in callbacks like onStart/onComplete in the stagger object. These should fire with each individual tween.
          for (p in stagger) {
            if (~_staggerTweenProps.indexOf(p)) {
              staggerVarsToMerge || (staggerVarsToMerge = {});
              staggerVarsToMerge[p] = stagger[p];
            }
          }
        }

for (i = 0; i < l; i++) {
          copy = _copyExcluding(vars, _staggerPropsToSkip);
          copy.stagger = 0;
          yoyoEase && (copy.yoyoEase = yoyoEase);
          staggerVarsToMerge && _merge(copy, staggerVarsToMerge);
          curTarget = parsedTargets[i]; //don't just copy duration or delay because if they're a string or function, we'd end up in an infinite loop because _isFuncOrString() would evaluate as true in the child tweens, entering this loop, etc. So we parse the value straight from vars and default to 0.

copy.duration = +_parseFuncOrString(duration, _assertThisInitialized(_this3), i, curTarget, parsedTargets);
          copy.delay = (+_parseFuncOrString(delay, _assertThisInitialized(_this3), i, curTarget, parsedTargets) || 0) - _this3._delay;

if (!stagger && l === 1 && copy.delay) {
            // if someone does delay:"random(1, 5)", repeat:-1, for example, the delay shouldn't be inside the repeat.
            _this3._delay = delay = copy.delay;
            _this3._start += delay;
            copy.delay = 0;
          }

tl.to(curTarget, copy, staggerFunc ? staggerFunc(i, curTarget, parsedTargets) : 0);
          tl._ease = _easeMap.none;
        }

tl.duration() ? duration = delay = 0 : _this3.timeline = 0; // if the timeline's duration is 0, we don't need a timeline internally!
      } else if (keyframes) {
        _inheritDefaults(_setDefaults(tl.vars.defaults, {
          ease: "none"
        }));

tl._ease = _parseEase(keyframes.ease || vars.ease || "none");
        var time = 0,
            a,
            kf,
            v;

if (_isArray(keyframes)) {
          keyframes.forEach(function (frame) {
            return tl.to(parsedTargets, frame, ">");
          });
          tl.duration(); // to ensure tl._dur is cached because we tap into it for performance purposes in the render() method.
        } else {
          copy = {};

for (p in keyframes) {
            p === "ease" || p === "easeEach" || _parseKeyframe(p, keyframes[p], copy, keyframes.easeEach);
          }

for (p in copy) {
            a = copy[p].sort(function (a, b) {
              return a.t - b.t;
            });
            time = 0;

for (i = 0; i < a.length; i++) {
              kf = a[i];
              v = {
                ease: kf.e,
                duration: (kf.t - (i ? a[i - 1].t : 0)) / 100 * duration
              };
              v[p] = kf.v;
              tl.to(parsedTargets, v, time);
              time += v.duration;
            }
          }

tl.duration() < duration && tl.to({}, {
            duration: duration - tl.duration()
          }); // in case keyframes didn't go to 100%
        }
      }

duration || _this3.duration(duration = tl.duration());
    } else {
      _this3.timeline = 0; //speed optimization, faster lookups (no going up the prototype chain)
    }

if (overwrite === true && !_suppressOverwrites) {
      _overwritingTween = _assertThisInitialized(_this3);

_globalTimeline.killTweensOf(parsedTargets);

_overwritingTween = 0;
    }

_addToTimeline(parent, _assertThisInitialized(_this3), position);

vars.reversed && _this3.reverse();
    vars.paused && _this3.paused(true);

if (immediateRender || !duration && !keyframes && _this3._start === _roundPrecise(parent._time) && _isNotFalse(immediateRender) && _hasNoPausedAncestors(_assertThisInitialized(_this3)) && parent.data !== "nested") {
      _this3._tTime = -_tinyNum; //forces a render without having to set the render() "force" parameter to true because we want to allow lazying by default (using the "force" parameter always forces an immediate full render)

_this3.render(Math.max(0, -delay) || 0); //in case delay is negative

}

scrollTrigger && _scrollTrigger(_assertThisInitialized(_this3), scrollTrigger);
    return _this3;
  }

var _proto3 = Tween.prototype;

_proto3.render = function render(totalTime, suppressEvents, force) {
    var prevTime = this._time,
        tDur = this._tDur,
        dur = this._dur,
        isNegative = totalTime < 0,
        tTime = totalTime > tDur - _tinyNum && !isNegative ? tDur : totalTime < _tinyNum ? 0 : totalTime,
        time,
        pt,
        iteration,
        cycleDuration,
        prevIteration,
        isYoyo,
        ratio,
        timeline,
        yoyoEase;

if (!dur) {
      _renderZeroDurationTween(this, totalTime, suppressEvents, force);
    } else if (tTime !== this._tTime || !totalTime || force || !this._initted && this._tTime || this._startAt && this._zTime < 0 !== isNegative) {
      //this senses if we're crossing over the start time, in which case we must record _zTime and force the render, but we do it in this lengthy conditional way for performance reasons (usually we can skip the calculations): this._initted && (this._zTime < 0) !== (totalTime < 0)
      time = tTime;
      timeline = this.timeline;

if (this._repeat) {
        //adjust the time for repeats and yoyos
        cycleDuration = dur + this._rDelay;

if (this._repeat < -1 && isNegative) {
          return this.totalTime(cycleDuration * 100 + totalTime, suppressEvents, force);
        }

time = _roundPrecise(tTime % cycleDuration); //round to avoid floating point errors. (4 % 0.8 should be 0 but some browsers report it as 0.79999999!)

if (iteration && iteration === tTime / cycleDuration) {
            time = dur;
            iteration--;
          }

time > dur && (time = dur);
        }

isYoyo = this._yoyo && iteration & 1;

if (isYoyo) {
          yoyoEase = this._yEase;
          time = dur - time;
        }

prevIteration = _animationCycle(this._tTime, cycleDuration);

if (time === prevTime && !force && this._initted) {
          //could be during the repeatDelay part. No need to render and fire callbacks.
          this._tTime = tTime;
          return this;
        }

if (iteration !== prevIteration) {
          timeline && this._yEase && _propagateYoyoEase(timeline, isYoyo); //repeatRefresh functionality

if (this.vars.repeatRefresh && !isYoyo && !this._lock) {
            this._lock = force = 1; //force, otherwise if lazy is true, the _attemptInitTween() will return and we'll jump out and get caught bouncing on each tick.

this.render(_roundPrecise(cycleDuration * iteration), true).invalidate()._lock = 0;
          }
        }
      }

if (!this._initted) {
        if (_attemptInitTween(this, isNegative ? totalTime : time, force, suppressEvents, tTime)) {
          this._tTime = 0; // in constructor if immediateRender is true, we set _tTime to -_tinyNum to have the playhead cross the starting point but we can't leave _tTime as a negative number.

return this;
        }

if (prevTime !== this._time) {
          // rare edge case - during initialization, an onUpdate in the _startAt (.fromTo()) might force this tween to render at a different spot in which case we should ditch this render() call so that it doesn't revert the values.
          return this;
        }

if (dur !== this._dur) {
          // while initting, a plugin like InertiaPlugin might alter the duration, so rerun from the start to ensure everything renders as it should.
          return this.render(totalTime, suppressEvents, force);
        }
      }

this._tTime = tTime;
      this._time = time;

if (!this._act && this._ts) {
        this._act = 1; //as long as it's not paused, force it to be active so that if the user renders independent of the parent timeline, it'll be forced to re-render on the next tick.

this._lazy = 0;
      }

this.ratio = ratio = (yoyoEase || this._ease)(time / dur);

if (this._from) {
        this.ratio = ratio = 1 - ratio;
      }

if (time && !prevTime && !suppressEvents) {
        _callback(this, "onStart");

pt = this._pt;

while (pt) {
        pt.r(ratio, pt.d);
        pt = pt._next;
      }

timeline && timeline.render(totalTime < 0 ? totalTime : !time && isYoyo ? -_tinyNum : timeline._dur * timeline._ease(time / this._dur), suppressEvents, force) || this._startAt && (this._zTime = totalTime);

if (this._onUpdate && !suppressEvents) {
        isNegative && _rewindStartAt(this, totalTime, suppressEvents, force); //note: for performance reasons, we tuck this conditional logic inside less traveled areas (most tweens don't have an onUpdate). We'd just have it at the end before the onComplete, but the values should be updated before any onUpdate is called, so we ALSO put it here and then if it's not called, we do so later near the onComplete.

_callback(this, "onUpdate");
      }

this._repeat && iteration !== prevIteration && this.vars.onRepeat && !suppressEvents && this.parent && _callback(this, "onRepeat");

if ((tTime === this._tDur || !tTime) && this._tTime === tTime) {
        isNegative && !this._onUpdate && _rewindStartAt(this, totalTime, true, true);
        (totalTime || !dur) && (tTime === this._tDur && this._ts > 0 || !tTime && this._ts < 0) && _removeFromParent(this, 1); // don't remove if we're rendering at exactly a time of 0, as there could be autoRevert values that should get set on the next tick (if the playhead goes backward beyond the startTime, negative totalTime). Don't remove if the timeline is reversed and the playhead isn't at 0, otherwise tl.progress(1).reverse() won't work. Only remove if the playhead is at the end and timeScale is positive, or if the playhead is at 0 and the timeScale is negative.

if (!suppressEvents && !(isNegative && !prevTime) && (tTime || prevTime || isYoyo)) {
          // if prevTime and tTime are zero, we shouldn't fire the onReverseComplete. This could happen if you gsap.to(... {paused:true}).play();
          _callback(this, tTime === tDur ? "onComplete" : "onReverseComplete", true);

this._prom && !(tTime < tDur && this.timeScale() > 0) && this._prom();
        }
      }
    }

return this;
  };

_proto3.targets = function targets() {
    return this._targets;
  };

_proto3.invalidate = function invalidate(soft) {
    // "soft" gives us a way to clear out everything EXCEPT the recorded pre-"from" portion of from() tweens. Otherwise, for example, if you tween.progress(1).render(0, true true).invalidate(), the "from" values would persist and then on the next render, the from() tweens would initialize and the current value would match the "from" values, thus animate from the same value to the same value (no animation). We tap into this in ScrollTrigger's refresh() where we must push a tween to completion and then back again but honor its init state in case the tween is dependent on another tween further up on the page.
    (!soft || !this.vars.runBackwards) && (this._startAt = 0);
    this._pt = this._op = this._onUpdate = this._lazy = this.ratio = 0;
    this._ptLookup = [];
    this.timeline && this.timeline.invalidate(soft);
    return _Animation2.prototype.invalidate.call(this, soft);
  };

_proto3.resetTo = function resetTo(property, value, start, startIsRelative) {
    _tickerActive || _ticker.wake();
    this._ts || this.play();
    var time = Math.min(this._dur, (this._dp._time - this._start) * this._ts),
        ratio;
    this._initted || _initTween(this, time);
    ratio = this._ease(time / this._dur); // don't just get tween.ratio because it may not have rendered yet.
    // possible future addition to allow an object with multiple values to update, like tween.resetTo({x: 100, y: 200}); At this point, it doesn't seem worth the added kb given the fact that most users will likely opt for the convenient gsap.quickTo() way of interacting with this method.
    // if (_isObject(property)) { // performance optimization
    // 	for (p in property) {
    // 		if (_updatePropTweens(this, p, property[p], value ? value[p] : null, start, ratio, time)) {
    // 			return this.resetTo(property, value, start, startIsRelative); // if a PropTween wasn't found for the property, it'll get forced with a re-initialization so we need to jump out and start over again.
    // 		}
    // 	}
    // } else {

if (_updatePropTweens(this, property, value, start, startIsRelative, ratio, time)) {
      return this.resetTo(property, value, start, startIsRelative); // if a PropTween wasn't found for the property, it'll get forced with a re-initialization so we need to jump out and start over again.
    } //}

_alignPlayhead(this, 0);

this.parent || _addLinkedListItem(this._dp, this, "_first", "_last", this._dp._sort ? "_start" : 0);
    return this.render(0);
  };

_proto3.kill = function kill(targets, vars) {
    if (vars === void 0) {
      vars = "all";
    }

if (!targets && (!vars || vars === "all")) {
      this._lazy = this._pt = 0;
      return this.parent ? _interrupt(this) : this;
    }

if (this.timeline) {
      var tDur = this.timeline.totalDuration();
      this.timeline.killTweensOf(targets, vars, _overwritingTween && _overwritingTween.vars.overwrite !== true)._first || _interrupt(this); // if nothing is left tweening, interrupt.

this.parent && tDur !== this.timeline.totalDuration() && _setDuration(this, this._dur * this.timeline._tDur / tDur, 0, 1); // if a nested tween is killed that changes the duration, it should affect this tween's duration. We must use the ratio, though, because sometimes the internal timeline is stretched like for keyframes where they don't all add up to whatever the parent tween's duration was set to.

return this;
    }

var parsedTargets = this._targets,
        killingTargets = targets ? toArray(targets) : parsedTargets,
        propTweenLookup = this._ptLookup,
        firstPT = this._pt,
        overwrittenProps,
        curLookup,
        curOverwriteProps,
        props,
        p,
        pt,
        i;

if ((!vars || vars === "all") && _arraysMatch(parsedTargets, killingTargets)) {
      vars === "all" && (this._pt = 0);
      return _interrupt(this);
    }

overwrittenProps = this._op = this._op || [];

if (vars !== "all") {
      //so people can pass in a comma-delimited list of property names
      if (_isString(vars)) {
        p = {};

_forEachName(vars, function (name) {
          return p[name] = 1;
        });

vars = p;
      }

vars = _addAliasesToVars(parsedTargets, vars);
    }

i = parsedTargets.length;

while (i--) {
      if (~killingTargets.indexOf(parsedTargets[i])) {
        curLookup = propTweenLookup[i];

if (vars === "all") {
          overwrittenProps[i] = vars;
          props = curLookup;
          curOverwriteProps = {};
        } else {
          curOverwriteProps = overwrittenProps[i] = overwrittenProps[i] || {};
          props = vars;
        }

for (p in props) {
          pt = curLookup && curLookup[p];

if (pt) {
            if (!("kill" in pt.d) || pt.d.kill(p) === true) {
              _removeLinkedListItem(this, pt, "_pt");
            }

delete curLookup[p];
          }

if (curOverwriteProps !== "all") {
            curOverwriteProps[p] = 1;
          }
        }
      }
    }

this._initted && !this._pt && firstPT && _interrupt(this); //if all tweening properties are killed, kill the tween. Without this line, if there's a tween with multiple targets and then you killTweensOf() each target individually, the tween would technically still remain active and fire its onComplete even though there aren't any more properties tweening.

return this;
  };

Tween.to = function to(targets, vars) {
    return new Tween(targets, vars, arguments[2]);
  };

Tween.from = function from(targets, vars) {
    return _createTweenType(1, arguments);
  };

Tween.delayedCall = function delayedCall(delay, callback, params, scope) {
    return new Tween(callback, 0, {
      immediateRender: false,
      lazy: false,
      overwrite: false,
      delay: delay,
      onComplete: callback,
      onReverseComplete: callback,
      onCompleteParams: params,
      onReverseCompleteParams: params,
      callbackScope: scope
    }); // we must use onReverseComplete too for things like timeline.add(() => {...}) which should be triggered in BOTH directions (forward and reverse)
  };

Tween.fromTo = function fromTo(targets, fromVars, toVars) {
    return _createTweenType(2, arguments);
  };

Tween.set = function set(targets, vars) {
    vars.duration = 0;
    vars.repeatDelay || (vars.repeat = 0);
    return new Tween(targets, vars);
  };

Tween.killTweensOf = function killTweensOf(targets, props, onlyActive) {
    return _globalTimeline.killTweensOf(targets, props, onlyActive);
  };

return Tween;
}(Animation);

_setDefaults(Tween.prototype, {
  _targets: [],
  _lazy: 0,
  _startAt: 0,
  _op: 0,
  _onInit: 0
}); //add the pertinent timeline methods to Tween instances so that users can chain conveniently and create a timeline automatically. (removed due to concerns that it'd ultimately add to more confusion especially for beginners)
// _forEachName("to,from,fromTo,set,call,add,addLabel,addPause", name => {
// 	Tween.prototype[name] = function() {
// 		let tl = new Timeline();
// 		return _addToTimeline(tl, this)[name].apply(tl, toArray(arguments));
// 	}
// });
//for backward compatibility. Leverage the timeline calls.

_forEachName("staggerTo,staggerFrom,staggerFromTo", function (name) {
  Tween[name] = function () {
    var tl = new Timeline(),
        params = _slice.call(arguments, 0);

params.splice(name === "staggerFromTo" ? 5 : 4, 0, 0);
    return tl[name].apply(tl, params);
  };
});
/*
 * --------------------------------------------------------------------------------------
 * PROPTWEEN
 * --------------------------------------------------------------------------------------
 */

if (!ratio && data.b) {
    //b = beginning string
    s = data.b;
  } else if (ratio === 1 && data.e) {
    //e = ending string
    s = data.e;
  } else {
    while (pt) {
      s = pt.p + (pt.m ? pt.m(pt.s + pt.c * ratio) : Math.round((pt.s + pt.c * ratio) * 10000) / 10000) + s; //we use the "p" property for the text inbetween (like a suffix). And in the context of a complex string, the modifier (m) is typically just Math.round(), like for RGB colors.

pt = pt._next;
    }

s += data.c; //we use the "c" of the PropTween to store the final chunk of non-numeric text.
  }

data.set(data.t, data.p, s, data);
},
    _renderPropTweens = function _renderPropTweens(ratio, data) {
  var pt = data._pt;

while (pt) {
    pt.r(ratio, pt.d);
    pt = pt._next;
  }
},
    _addPluginModifier = function _addPluginModifier(modifier, tween, target, property) {
  var pt = this._pt,
      next;

while (pt) {
    next = pt._next;
    pt.p === property && pt.modifier(modifier, tween, target);
    pt = next;
  }
},
    _killPropTweensOf = function _killPropTweensOf(property) {
  var pt = this._pt,
      hasNonDependentRemaining,
      next;

while (pt) {
    next = pt._next;

if (pt.p === property && !pt.op || pt.op === property) {
      _removeLinkedListItem(this, pt, "_pt");
    } else if (!pt.dep) {
      hasNonDependentRemaining = 1;
    }

pt = next;
  }

return !hasNonDependentRemaining;
},
    _setterWithModifier = function _setterWithModifier(target, property, value, data) {
  data.mSet(target, property, data.m.call(data.tween, value, data.mt), data);
},
    _sortPropTweensByPriority = function _sortPropTweensByPriority(parent) {
  var pt = parent._pt,
      next,
      pt2,
      first,
      last; //sorts the PropTween linked list in order of priority because some plugins need to do their work after ALL of the PropTweens were created (like RoundPropsPlugin and ModifiersPlugin)

while (pt) {
    next = pt._next;
    pt2 = first;

while (pt2 && pt2.pr > pt.pr) {
      pt2 = pt2._next;
    }

if (pt._prev = pt2 ? pt2._prev : last) {
      pt._prev._next = pt;
    } else {
      first = pt;
    }

if (pt._next = pt2) {
      pt2._prev = pt;
    } else {
      last = pt;
    }

pt = next;
  }

parent._pt = first;
}; //PropTween key: t = target, p = prop, r = renderer, d = data, s = start, c = change, op = overwriteProperty (ONLY populated when it's different than p), pr = priority, _next/_prev for the linked list siblings, set = setter, m = modifier, mSet = modifierSetter (the original setter, before a modifier was added)

var PropTween = /*#__PURE__*/function () {
  function PropTween(next, target, prop, start, change, renderer, data, setter, priority) {
    this.t = target;
    this.s = start;
    this.c = change;
    this.p = prop;
    this.r = renderer || _renderPlain;
    this.d = data || this;
    this.set = setter || _setterPlain;
    this.pr = priority || 0;
    this._next = next;

if (next) {
      next._prev = this;
    }
  }

var _proto4 = PropTween.prototype;

_proto4.modifier = function modifier(func, tween, target) {
    this.mSet = this.mSet || this.set; //in case it was already set (a PropTween can only have one modifier)

this.set = _setterWithModifier;
    this.m = func;
    this.mt = target; //modifier target

this.tween = tween;
  };

return PropTween;
}(); //Initialization tasks

_forEachName(_callbackNames + "parent,duration,ease,delay,overwrite,runBackwards,startAt,yoyo,immediateRender,repeat,repeatDelay,data,paused,reversed,lazy,callbackScope,stringFilter,id,yoyoEase,stagger,inherit,repeatRefresh,keyframes,autoRevert,scrollTrigger", function (name) {
  return _reservedProps[name] = 1;
});

_globals.TweenMax = _globals.TweenLite = Tween;
_globals.TimelineLite = _globals.TimelineMax = Timeline;
_globalTimeline = new Timeline({
  sortChildren: false,
  defaults: _defaults,
  autoRemoveChildren: true,
  id: "root",
  smoothChildTiming: true
});
_config.stringFilter = _colorStringFilter;

if (time - _lastMediaTime > 2) {
    _dispatch("matchMediaInit");

_media.forEach(function (c) {
      var queries = c.queries,
          conditions = c.conditions,
          match,
          p,
          anyMatch,
          toggled;

for (p in queries) {
        match = _win.matchMedia(queries[p]).matches; // Firefox doesn't update the "matches" property of the MediaQueryList object correctly - it only does so as it calls its change handler - so we must re-create a media query here to ensure it's accurate.

match && (anyMatch = 1);

if (match !== conditions[p]) {
          conditions[p] = match;
          toggled = 1;
        }
      }

if (toggled) {
        c.revert();
        anyMatch && matches.push(c);
      }
    });

_dispatch("matchMediaRevert");

matches.forEach(function (c) {
      return c.onMatch(c);
    });
    _lastMediaTime = time;

_dispatch("matchMedia");
  }
};

var Context = /*#__PURE__*/function () {
  function Context(func, scope) {
    this.selector = scope && selector(scope);
    this.data = [];
    this._r = []; // returned/cleanup functions

this.isReverted = false;
    func && this.add(func);
  }

var _proto5 = Context.prototype;

_proto5.add = function add(name, func, scope) {
    // possible future addition if we need the ability to add() an animation to a context and for whatever reason cannot create that animation inside of a context.add(() => {...}) function.
    // if (name && _isFunction(name.revert)) {
    // 	this.data.push(name);
    // 	return (name._ctx = this);
    // }
    if (_isFunction(name)) {
      scope = func;
      func = name;
      name = _isFunction;
    }

var self = this,
        f = function f() {
      var prev = _context,
          prevSelector = self.selector,
          result;
      prev && prev !== self && prev.data.push(self);
      scope && (self.selector = selector(scope));
      _context = self;
      result = func.apply(self, arguments);
      _isFunction(result) && self._r.push(result);
      _context = prev;
      self.selector = prevSelector;
      self.isReverted = false;
      return result;
    };

self.last = f;
    return name === _isFunction ? f(self) : name ? self[name] = f : f;
  };

_proto5.ignore = function ignore(func) {
    var prev = _context;
    _context = null;
    func(this);
    _context = prev;
  };

_proto5.getTweens = function getTweens() {
    var a = [];
    this.data.forEach(function (e) {
      return e instanceof Context ? a.push.apply(a, e.getTweens()) : e instanceof Tween && !(e.parent && e.parent.data === "nested") && a.push(e);
    });
    return a;
  };

_proto5.clear = function clear() {
    this._r.length = this.data.length = 0;
  };

_proto5.kill = function kill(revert, matchMedia) {
    var _this4 = this;

if (revert) {
      var tweens = this.getTweens();
      this.data.forEach(function (t) {
        // Flip plugin tweens are very different in that they should actually be pushed to their end. The plugin replaces the timeline's .revert() method to do exactly that. But we also need to remove any of those nested tweens inside the flip timeline so that they don't get individually reverted.
        if (t.data === "isFlip") {
          t.revert();
          t.getChildren(true, true, false).forEach(function (tween) {
            return tweens.splice(tweens.indexOf(tween), 1);
          });
        }
      }); // save as an object so that we can cache the globalTime for each tween to optimize performance during the sort

tweens.map(function (t) {
        return {
          g: t.globalTime(0),
          t: t
        };
      }).sort(function (a, b) {
        return b.g - a.g || -1;
      }).forEach(function (o) {
        return o.t.revert(revert);
      }); // note: all of the _startAt tweens should be reverted in reverse order that they were created, and they'll all have the same globalTime (-1) so the " || -1" in the sort keeps the order properly.

this.data.forEach(function (e) {
        return !(e instanceof Animation) && e.revert && e.revert(revert);
      });

this._r.forEach(function (f) {
        return f(revert, _this4);
      });

this.isReverted = true;
    } else {
      this.data.forEach(function (e) {
        return e.kill && e.kill();
      });
    }

this.clear();

if (matchMedia) {
      var i = _media.indexOf(this);

!!~i && _media.splice(i, 1);
    }
  };

_proto5.revert = function revert(config) {
    this.kill(config || {});
  };

return Context;
}();

var MatchMedia = /*#__PURE__*/function () {
  function MatchMedia(scope) {
    this.contexts = [];
    this.scope = scope;
  }

var _proto6 = MatchMedia.prototype;

_proto6.add = function add(conditions, func, scope) {
    _isObject(conditions) || (conditions = {
      matches: conditions
    });
    var context = new Context(0, scope || this.scope),
        cond = context.conditions = {},
        mq,
        p,
        active;
    this.contexts.push(context);
    func = context.add("onMatch", func);
    context.queries = conditions;

for (p in conditions) {
      if (p === "all") {
        active = 1;
      } else {
        mq = _win.matchMedia(conditions[p]);

if (mq) {
          _media.indexOf(context) < 0 && _media.push(context);
          (cond[p] = mq.matches) && (active = 1);
          mq.addListener ? mq.addListener(_onMediaChange) : mq.addEventListener("change", _onMediaChange);
        }
      }
    }

active && func(context);
    return this;
  } // refresh() {
  // 	let time = _lastMediaTime,
  // 		media = _media;
  // 	_lastMediaTime = -1;
  // 	_media = this.contexts;
  // 	_onMediaChange();
  // 	_lastMediaTime = time;
  // 	_media = media;
  // }
  ;

_proto6.revert = function revert(config) {
    this.kill(config || {});
  };

_proto6.kill = function kill(revert) {
    this.contexts.forEach(function (c) {
      return c.kill(revert, true);
    });
  };

return MatchMedia;
}();
/*
 * --------------------------------------------------------------------------------------
 * GSAP
 * --------------------------------------------------------------------------------------
 */

var _gsap = {
  registerPlugin: function registerPlugin() {
    for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
      args[_key2] = arguments[_key2];
    }

args.forEach(function (config) {
      return _createPlugin(config);
    });
  },
  timeline: function timeline(vars) {
    return new Timeline(vars);
  },
  getTweensOf: function getTweensOf(targets, onlyActive) {
    return _globalTimeline.getTweensOf(targets, onlyActive);
  },
  getProperty: function getProperty(target, property, unit, uncache) {
    _isString(target) && (target = toArray(target)[0]); //in case selector text or an array is passed in

var getter = _getCache(target || {}).get,
        format = unit ? _passThrough : _numericIfPossible;

unit === "native" && (unit = "");
    return !target ? target : !property ? function (property, unit, uncache) {
      return format((_plugins[property] && _plugins[property].get || getter)(target, property, unit, uncache));
    } : format((_plugins[property] && _plugins[property].get || getter)(target, property, unit, uncache));
  },
  quickSetter: function quickSetter(target, property, unit) {
    target = toArray(target);

if (target.length > 1) {
      var setters = target.map(function (t) {
        return gsap.quickSetter(t, property, unit);
      }),
          l = setters.length;
      return function (value) {
        var i = l;

while (i--) {
          setters[i](value);
        }
      };
    }

target = target[0] || {};

var Plugin = _plugins[property],
        cache = _getCache(target),
        p = cache.harness && (cache.harness.aliases || {})[property] || property,
        // in case it's an alias, like "rotate" for "rotation".
    setter = Plugin ? function (value) {
      var p = new Plugin();
      _quickTween._pt = 0;
      p.init(target, unit ? value + unit : value, _quickTween, 0, [target]);
      p.render(1, p);
      _quickTween._pt && _renderPropTweens(1, _quickTween);
    } : cache.set(target, p);

return Plugin ? setter : function (value) {
      return setter(target, p, unit ? value + unit : value, cache, 1);
    };
  },
  quickTo: function quickTo(target, property, vars) {
    var _merge2;

var tween = gsap.to(target, _merge((_merge2 = {}, _merge2[property] = "+=0.1", _merge2.paused = true, _merge2), vars || {})),
        func = function func(value, start, startIsRelative) {
      return tween.resetTo(property, value, start, startIsRelative);
    };

func.tween = tween;
    return func;
  },
  isTweening: function isTweening(targets) {
    return _globalTimeline.getTweensOf(targets, true).length > 0;
  },
  defaults: function defaults(value) {
    value && value.ease && (value.ease = _parseEase(value.ease, _defaults.ease));
    return _mergeDeep(_defaults, value || {});
  },
  config: function config(value) {
    return _mergeDeep(_config, value || {});
  },
  registerEffect: function registerEffect(_ref3) {
    var name = _ref3.name,
        effect = _ref3.effect,
        plugins = _ref3.plugins,
        defaults = _ref3.defaults,
        extendTimeline = _ref3.extendTimeline;
    (plugins || "").split(",").forEach(function (pluginName) {
      return pluginName && !_plugins[pluginName] && !_globals[pluginName] && _warn(name + " effect requires " + pluginName + " plugin.");
    });

_effects[name] = function (targets, vars, tl) {
      return effect(toArray(targets), _setDefaults(vars || {}, defaults), tl);
    };

if (extendTimeline) {
      Timeline.prototype[name] = function (targets, vars, position) {
        return this.add(_effects[name](targets, _isObject(vars) ? vars : (position = vars) && {}, this), position);
      };
    }
  },
  registerEase: function registerEase(name, ease) {
    _easeMap[name] = _parseEase(ease);
  },
  parseEase: function parseEase(ease, defaultEase) {
    return arguments.length ? _parseEase(ease, defaultEase) : _easeMap;
  },
  getById: function getById(id) {
    return _globalTimeline.getById(id);
  },
  exportRoot: function exportRoot(vars, includeDelayedCalls) {
    if (vars === void 0) {
      vars = {};
    }

var tl = new Timeline(vars),
        child,
        next;
    tl.smoothChildTiming = _isNotFalse(vars.smoothChildTiming);

_globalTimeline.remove(tl);

tl._dp = 0; //otherwise it'll get re-activated when adding children and be re-introduced into _globalTimeline's linked list (then added to itself).

tl._time = tl._tTime = _globalTimeline._time;
    child = _globalTimeline._first;

while (child) {
      next = child._next;

if (includeDelayedCalls || !(!child._dur && child instanceof Tween && child.vars.onComplete === child._targets[0])) {
        _addToTimeline(tl, child, child._start - child._delay);
      }

child = next;
    }

_addToTimeline(_globalTimeline, tl, 0);

return tl;
  },
  context: function context(func, scope) {
    return func ? new Context(func, scope) : _context;
  },
  matchMedia: function matchMedia(scope) {
    return new MatchMedia(scope);
  },
  matchMediaRefresh: function matchMediaRefresh() {
    return _media.forEach(function (c) {
      var cond = c.conditions,
          found,
          p;

for (p in cond) {
        if (cond[p]) {
          cond[p] = false;
          found = 1;
        }
      }

found && c.revert();
    }) || _onMediaChange();
  },
  addEventListener: function addEventListener(type, callback) {
    var a = _listeners[type] || (_listeners[type] = []);
    ~a.indexOf(callback) || a.push(callback);
  },
  removeEventListener: function removeEventListener(type, callback) {
    var a = _listeners[type],
        i = a && a.indexOf(callback);
    i >= 0 && a.splice(i, 1);
  },
  utils: {
    wrap: wrap,
    wrapYoyo: wrapYoyo,
    distribute: distribute,
    random: random,
    snap: snap,
    normalize: normalize,
    getUnit: getUnit,
    clamp: clamp,
    splitColor: splitColor,
    toArray: toArray,
    selector: selector,
    mapRange: mapRange,
    pipe: pipe,
    unitize: unitize,
    interpolate: interpolate,
    shuffle: shuffle
  },
  install: _install,
  effects: _effects,
  ticker: _ticker,
  updateRoot: Timeline.updateRoot,
  plugins: _plugins,
  globalTimeline: _globalTimeline,
  core: {
    PropTween: PropTween,
    globals: _addGlobal,
    Tween: Tween,
    Timeline: Timeline,
    Animation: Animation,
    getCache: _getCache,
    _removeLinkedListItem: _removeLinkedListItem,
    reverting: function reverting() {
      return _reverting;
    },
    context: function context(toAdd) {
      if (toAdd && _context) {
        _context.data.push(toAdd);

toAdd._ctx = _context;
      }

return _context;
    },
    suppressOverwrites: function suppressOverwrites(value) {
      return _suppressOverwrites = value;
    }
  }
};

_forEachName("to,from,fromTo,delayedCall,set,killTweensOf", function (name) {
  return _gsap[name] = Tween[name];
});

_ticker.add(Timeline.updateRoot);

_quickTween = _gsap.to({}, {
  duration: 0
}); // ---- EXTRA PLUGINS --------------------------------------------------------

var _getPluginPropTween = function _getPluginPropTween(plugin, prop) {
  var pt = plugin._pt;

while (pt && pt.p !== prop && pt.op !== prop && pt.fp !== prop) {
    pt = pt._next;
  }

return pt;
},
    _addModifiers = function _addModifiers(tween, modifiers) {
  var targets = tween._targets,
      p,
      i,
      pt;

for (p in modifiers) {
    i = targets.length;

while (i--) {
      pt = tween._ptLookup[i][p];

if (pt && (pt = pt.d)) {
        if (pt._pt) {
          // is a plugin
          pt = _getPluginPropTween(pt, p);
        }

pt && pt.modifier && pt.modifier(modifiers[p], tween, targets[i], p);
      }
    }
  }
},
    _buildModifierPlugin = function _buildModifierPlugin(name, modifier) {
  return {
    name: name,
    rawVars: 1,
    //don't pre-process function-based values or "random()" strings.
    init: function init(target, vars, tween) {
      tween._onInit = function (tween) {
        var temp, p;

if (_isString(vars)) {
          temp = {};

_forEachName(vars, function (name) {
            return temp[name] = 1;
          }); //if the user passes in a comma-delimited list of property names to roundProps, like "x,y", we round to whole numbers.

vars = temp;
        }

if (modifier) {
          temp = {};

for (p in vars) {
            temp[p] = modifier(vars[p]);
          }

vars = temp;
        }

_addModifiers(tween, vars);
      };
    }
  };
}; //register core plugins

var gsap = _gsap.registerPlugin({
  name: "attr",
  init: function init(target, vars, tween, index, targets) {
    var p, pt, v;
    this.tween = tween;

for (p in vars) {
      v = target.getAttribute(p) || "";
      pt = this.add(target, "setAttribute", (v || 0) + "", vars[p], index, targets, 0, 0, p);
      pt.op = p;
      pt.b = v; // record the beginning value so we can revert()

this._props.push(p);
    }
  },
  render: function render(ratio, data) {
    var pt = data._pt;

while (pt) {
      _reverting ? pt.set(pt.t, pt.p, pt.b, pt) : pt.r(ratio, pt.d); // if reverting, go back to the original (pt.b)

pt = pt._next;
    }
  }
}, {
  name: "endArray",
  init: function init(target, value) {
    var i = value.length;

while (i--) {
      this.add(target, i, target[i] || 0, value[i], 0, 0, 0, 0, 0, 1);
    }
  }
}, _buildModifierPlugin("roundProps", _roundModifier), _buildModifierPlugin("modifiers"), _buildModifierPlugin("snap", snap)) || _gsap; //to prevent the core plugins from being dropped via aggressive tree shaking, we must include them in the variable declaration in this way.

Tween.version = Timeline.version = gsap.version = "3.11.4";
_coreReady = 1;
_windowExists() && _wake();
var Power0 = _easeMap.Power0,
    Power1 = _easeMap.Power1,
    Power2 = _easeMap.Power2,
    Power3 = _easeMap.Power3,
    Power4 = _easeMap.Power4,
    Linear = _easeMap.Linear,
    Quad = _easeMap.Quad,
    Cubic = _easeMap.Cubic,
    Quart = _easeMap.Quart,
    Quint = _easeMap.Quint,
    Strong = _easeMap.Strong,
    Elastic = _easeMap.Elastic,
    Back = _easeMap.Back,
    SteppedEase = _easeMap.SteppedEase,
    Bounce = _easeMap.Bounce,
    Sine = _easeMap.Sine,
    Expo = _easeMap.Expo,
    Circ = _easeMap.Circ;

//export some internal methods/orojects for use in CSSPlugin so that we can externalize that file and allow custom builds that exclude it.

/***/ }),

/***/ "./node_modules/gsap/index.js":
/*!************************************!*\
  !*** ./node_modules/gsap/index.js ***!
  \************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "Back": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Back),
/* harmony export */   "Bounce": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Bounce),
/* harmony export */   "CSSPlugin": () => (/* reexport safe */ _CSSPlugin_js__WEBPACK_IMPORTED_MODULE_1__.CSSPlugin),
/* harmony export */   "Circ": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Circ),
/* harmony export */   "Cubic": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Cubic),
/* harmony export */   "Elastic": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Elastic),
/* harmony export */   "Expo": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Expo),
/* harmony export */   "Linear": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Linear),
/* harmony export */   "Power0": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Power0),
/* harmony export */   "Power1": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Power1),
/* harmony export */   "Power2": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Power2),
/* harmony export */   "Power3": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Power3),
/* harmony export */   "Power4": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Power4),
/* harmony export */   "Quad": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Quad),
/* harmony export */   "Quart": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Quart),
/* harmony export */   "Quint": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Quint),
/* harmony export */   "Sine": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Sine),
/* harmony export */   "SteppedEase": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.SteppedEase),
/* harmony export */   "Strong": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.Strong),
/* harmony export */   "TimelineLite": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.TimelineLite),
/* harmony export */   "TimelineMax": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.TimelineMax),
/* harmony export */   "TweenLite": () => (/* reexport safe */ _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.TweenLite),
/* harmony export */   "TweenMax": () => (/* binding */ TweenMaxWithCSS),
/* harmony export */   "default": () => (/* binding */ gsapWithCSS),
/* harmony export */   "gsap": () => (/* binding */ gsapWithCSS)
/* harmony export */ });
/* harmony import */ var _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./gsap-core.js */ "./node_modules/gsap/gsap-core.js");
/* harmony import */ var _CSSPlugin_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./CSSPlugin.js */ "./node_modules/gsap/CSSPlugin.js");

var gsapWithCSS = _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap.registerPlugin(_CSSPlugin_js__WEBPACK_IMPORTED_MODULE_1__.CSSPlugin) || _gsap_core_js__WEBPACK_IMPORTED_MODULE_0__.gsap,
    // to protect from tree shaking
TweenMaxWithCSS = gsapWithCSS.core.Tween;

/***/ }),

/***/ "./node_modules/gsap/utils/strings.js":
/*!********************************************!*\
  !*** ./node_modules/gsap/utils/strings.js ***!
  \********************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "emojiExp": () => (/* binding */ emojiExp),
/* harmony export */   "emojiSafeSplit": () => (/* binding */ emojiSafeSplit),
/* harmony export */   "getText": () => (/* binding */ getText),
/* harmony export */   "splitInnerHTML": () => (/* binding */ splitInnerHTML)
/* harmony export */ });
/*!
 * strings: 3.11.4
 * https://greensock.com
 *
 * Copyright 2008-2022, GreenSock. All rights reserved.
 * Subject to the terms at https://greensock.com/standard-license or for
 * Club GreenSock members, the agreement issued with that membership.
 * @author: Jack Doyle, jack@greensock.com
*/

/* eslint-disable */
var _trimExp = /(?:^\s+|\s+$)/g;
var emojiExp = /([\uD800-\uDBFF][\uDC00-\uDFFF](?:[\u200D\uFE0F][\uD800-\uDBFF][\uDC00-\uDFFF]){2,}|\uD83D\uDC69(?:\u200D(?:(?:\uD83D\uDC69\u200D)?\uD83D\uDC67|(?:\uD83D\uDC69\u200D)?\uD83D\uDC66)|\uD83C[\uDFFB-\uDFFF])|\uD83D\uDC69\u200D(?:\uD83D\uDC69\u200D)?\uD83D\uDC66\u200D\uD83D\uDC66|\uD83D\uDC69\u200D(?:\uD83D\uDC69\u200D)?\uD83D\uDC67\u200D(?:\uD83D[\uDC66\uDC67])|\uD83C\uDFF3\uFE0F\u200D\uD83C\uDF08|(?:\uD83C[\uDFC3\uDFC4\uDFCA]|\uD83D[\uDC6E\uDC71\uDC73\uDC77\uDC81\uDC82\uDC86\uDC87\uDE45-\uDE47\uDE4B\uDE4D\uDE4E\uDEA3\uDEB4-\uDEB6]|\uD83E[\uDD26\uDD37-\uDD39\uDD3D\uDD3E\uDDD6-\uDDDD])(?:\uD83C[\uDFFB-\uDFFF])\u200D[\u2640\u2642]\uFE0F|\uD83D\uDC69(?:\uD83C[\uDFFB-\uDFFF])\u200D(?:\uD83C[\uDF3E\uDF73\uDF93\uDFA4\uDFA8\uDFEB\uDFED]|\uD83D[\uDCBB\uDCBC\uDD27\uDD2C\uDE80\uDE92])|(?:\uD83C[\uDFC3\uDFC4\uDFCA]|\uD83D[\uDC6E\uDC6F\uDC71\uDC73\uDC77\uDC81\uDC82\uDC86\uDC87\uDE45-\uDE47\uDE4B\uDE4D\uDE4E\uDEA3\uDEB4-\uDEB6]|\uD83E[\uDD26\uDD37-\uDD39\uDD3C-\uDD3E\uDDD6-\uDDDF])\u200D[\u2640\u2642]\uFE0F|\uD83C\uDDFD\uD83C\uDDF0|\uD83C\uDDF6\uD83C\uDDE6|\uD83C\uDDF4\uD83C\uDDF2|\uD83C\uDDE9(?:\uD83C[\uDDEA\uDDEC\uDDEF\uDDF0\uDDF2\uDDF4\uDDFF])|\uD83C\uDDF7(?:\uD83C[\uDDEA\uDDF4\uDDF8\uDDFA\uDDFC])|\uD83C\uDDE8(?:\uD83C[\uDDE6\uDDE8\uDDE9\uDDEB-\uDDEE\uDDF0-\uDDF5\uDDF7\uDDFA-\uDDFF])|(?:\u26F9|\uD83C[\uDFCB\uDFCC]|\uD83D\uDD75)(?:\uFE0F\u200D[\u2640\u2642]|(?:\uD83C[\uDFFB-\uDFFF])\u200D[\u2640\u2642])\uFE0F|(?:\uD83D\uDC41\uFE0F\u200D\uD83D\uDDE8|\uD83D\uDC69(?:\uD83C[\uDFFB-\uDFFF])\u200D[\u2695\u2696\u2708]|\uD83D\uDC69\u200D[\u2695\u2696\u2708]|\uD83D\uDC68(?:(?:\uD83C[\uDFFB-\uDFFF])\u200D[\u2695\u2696\u2708]|\u200D[\u2695\u2696\u2708]))\uFE0F|\uD83C\uDDF2(?:\uD83C[\uDDE6\uDDE8-\uDDED\uDDF0-\uDDFF])|\uD83D\uDC69\u200D(?:\uD83C[\uDF3E\uDF73\uDF93\uDFA4\uDFA8\uDFEB\uDFED]|\uD83D[\uDCBB\uDCBC\uDD27\uDD2C\uDE80\uDE92]|\u2764\uFE0F\u200D(?:\uD83D\uDC8B\u200D(?:\uD83D[\uDC68\uDC69])|\uD83D[\uDC68\uDC69]))|\uD83C\uDDF1(?:\uD83C[\uDDE6-\uDDE8\uDDEE\uDDF0\uDDF7-\uDDFB\uDDFE])|\uD83C\uDDEF(?:\uD83C[\uDDEA\uDDF2\uDDF4\uDDF5])|\uD83C\uDDED(?:\uD83C[\uDDF0\uDDF2\uDDF3\uDDF7\uDDF9\uDDFA])|\uD83C\uDDEB(?:\uD83C[\uDDEE-\uDDF0\uDDF2\uDDF4\uDDF7])|[#\*0-9]\uFE0F\u20E3|\uD83C\uDDE7(?:\uD83C[\uDDE6\uDDE7\uDDE9-\uDDEF\uDDF1-\uDDF4\uDDF6-\uDDF9\uDDFB\uDDFC\uDDFE\uDDFF])|\uD83C\uDDE6(?:\uD83C[\uDDE8-\uDDEC\uDDEE\uDDF1\uDDF2\uDDF4\uDDF6-\uDDFA\uDDFC\uDDFD\uDDFF])|\uD83C\uDDFF(?:\uD83C[\uDDE6\uDDF2\uDDFC])|\uD83C\uDDF5(?:\uD83C[\uDDE6\uDDEA-\uDDED\uDDF0-\uDDF3\uDDF7-\uDDF9\uDDFC\uDDFE])|\uD83C\uDDFB(?:\uD83C[\uDDE6\uDDE8\uDDEA\uDDEC\uDDEE\uDDF3\uDDFA])|\uD83C\uDDF3(?:\uD83C[\uDDE6\uDDE8\uDDEA-\uDDEC\uDDEE\uDDF1\uDDF4\uDDF5\uDDF7\uDDFA\uDDFF])|\uD83C\uDFF4\uDB40\uDC67\uDB40\uDC62(?:\uDB40\uDC77\uDB40\uDC6C\uDB40\uDC73|\uDB40\uDC73\uDB40\uDC63\uDB40\uDC74|\uDB40\uDC65\uDB40\uDC6E\uDB40\uDC67)\uDB40\uDC7F|\uD83D\uDC68(?:\u200D(?:\u2764\uFE0F\u200D(?:\uD83D\uDC8B\u200D)?\uD83D\uDC68|(?:(?:\uD83D[\uDC68\uDC69])\u200D)?\uD83D\uDC66\u200D\uD83D\uDC66|(?:(?:\uD83D[\uDC68\uDC69])\u200D)?\uD83D\uDC67\u200D(?:\uD83D[\uDC66\uDC67])|\uD83C[\uDF3E\uDF73\uDF93\uDFA4\uDFA8\uDFEB\uDFED]|\uD83D[\uDCBB\uDCBC\uDD27\uDD2C\uDE80\uDE92])|(?:\uD83C[\uDFFB-\uDFFF])\u200D(?:\uD83C[\uDF3E\uDF73\uDF93\uDFA4\uDFA8\uDFEB\uDFED]|\uD83D[\uDCBB\uDCBC\uDD27\uDD2C\uDE80\uDE92]))|\uD83C\uDDF8(?:\uD83C[\uDDE6-\uDDEA\uDDEC-\uDDF4\uDDF7-\uDDF9\uDDFB\uDDFD-\uDDFF])|\uD83C\uDDF0(?:\uD83C[\uDDEA\uDDEC-\uDDEE\uDDF2\uDDF3\uDDF5\uDDF7\uDDFC\uDDFE\uDDFF])|\uD83C\uDDFE(?:\uD83C[\uDDEA\uDDF9])|\uD83C\uDDEE(?:\uD83C[\uDDE8-\uDDEA\uDDF1-\uDDF4\uDDF6-\uDDF9])|\uD83C\uDDF9(?:\uD83C[\uDDE6\uDDE8\uDDE9\uDDEB-\uDDED\uDDEF-\uDDF4\uDDF7\uDDF9\uDDFB\uDDFC\uDDFF])|\uD83C\uDDEC(?:\uD83C[\uDDE6\uDDE7\uDDE9-\uDDEE\uDDF1-\uDDF3\uDDF5-\uDDFA\uDDFC\uDDFE])|\uD83C\uDDFA(?:\uD83C[\uDDE6\uDDEC\uDDF2\uDDF3\uDDF8\uDDFE\uDDFF])|\uD83C\uDDEA(?:\uD83C[\uDDE6\uDDE8\uDDEA\uDDEC\uDDED\uDDF7-\uDDFA])|\uD83C\uDDFC(?:\uD83C[\uDDEB\uDDF8])|(?:\u26F9|\uD83C[\uDFCB\uDFCC]|\uD83D\uDD75)(?:\uD83C[\uDFFB-\uDFFF])|(?:\uD83C[\uDFC3\uDFC4\uDFCA]|\uD83D[\uDC6E\uDC71\uDC73\uDC77\uDC81\uDC82\uDC86\uDC87\uDE45-\uDE47\uDE4B\uDE4D\uDE4E\uDEA3\uDEB4-\uDEB6]|\uD83E[\uDD26\uDD37-\uDD39\uDD3D\uDD3E\uDDD6-\uDDDD])(?:\uD83C[\uDFFB-\uDFFF])|(?:[\u261D\u270A-\u270D]|\uD83C[\uDF85\uDFC2\uDFC7]|\uD83D[\uDC42\uDC43\uDC46-\uDC50\uDC66\uDC67\uDC70\uDC72\uDC74-\uDC76\uDC78\uDC7C\uDC83\uDC85\uDCAA\uDD74\uDD7A\uDD90\uDD95\uDD96\uDE4C\uDE4F\uDEC0\uDECC]|\uD83E[\uDD18-\uDD1C\uDD1E\uDD1F\uDD30-\uDD36\uDDD1-\uDDD5])(?:\uD83C[\uDFFB-\uDFFF])|\uD83D\uDC68(?:\u200D(?:(?:(?:\uD83D[\uDC68\uDC69])\u200D)?\uD83D\uDC67|(?:(?:\uD83D[\uDC68\uDC69])\u200D)?\uD83D\uDC66)|\uD83C[\uDFFB-\uDFFF])|(?:[\u261D\u26F9\u270A-\u270D]|\uD83C[\uDF85\uDFC2-\uDFC4\uDFC7\uDFCA-\uDFCC]|\uD83D[\uDC42\uDC43\uDC46-\uDC50\uDC66-\uDC69\uDC6E\uDC70-\uDC78\uDC7C\uDC81-\uDC83\uDC85-\uDC87\uDCAA\uDD74\uDD75\uDD7A\uDD90\uDD95\uDD96\uDE45-\uDE47\uDE4B-\uDE4F\uDEA3\uDEB4-\uDEB6\uDEC0\uDECC]|\uD83E[\uDD18-\uDD1C\uDD1E\uDD1F\uDD26\uDD30-\uDD39\uDD3D\uDD3E\uDDD1-\uDDDD])(?:\uD83C[\uDFFB-\uDFFF])?|(?:[\u231A\u231B\u23E9-\u23EC\u23F0\u23F3\u25FD\u25FE\u2614\u2615\u2648-\u2653\u267F\u2693\u26A1\u26AA\u26AB\u26BD\u26BE\u26C4\u26C5\u26CE\u26D4\u26EA\u26F2\u26F3\u26F5\u26FA\u26FD\u2705\u270A\u270B\u2728\u274C\u274E\u2753-\u2755\u2757\u2795-\u2797\u27B0\u27BF\u2B1B\u2B1C\u2B50\u2B55]|\uD83C[\uDC04\uDCCF\uDD8E\uDD91-\uDD9A\uDDE6-\uDDFF\uDE01\uDE1A\uDE2F\uDE32-\uDE36\uDE38-\uDE3A\uDE50\uDE51\uDF00-\uDF20\uDF2D-\uDF35\uDF37-\uDF7C\uDF7E-\uDF93\uDFA0-\uDFCA\uDFCF-\uDFD3\uDFE0-\uDFF0\uDFF4\uDFF8-\uDFFF]|\uD83D[\uDC00-\uDC3E\uDC40\uDC42-\uDCFC\uDCFF-\uDD3D\uDD4B-\uDD4E\uDD50-\uDD67\uDD7A\uDD95\uDD96\uDDA4\uDDFB-\uDE4F\uDE80-\uDEC5\uDECC\uDED0-\uDED2\uDEEB\uDEEC\uDEF4-\uDEF8]|\uD83E[\uDD10-\uDD3A\uDD3C-\uDD3E\uDD40-\uDD45\uDD47-\uDD4C\uDD50-\uDD6B\uDD80-\uDD97\uDDC0\uDDD0-\uDDE6])|(?:[#\*0-9\xA9\xAE\u203C\u2049\u2122\u2139\u2194-\u2199\u21A9\u21AA\u231A\u231B\u2328\u23CF\u23E9-\u23F3\u23F8-\u23FA\u24C2\u25AA\u25AB\u25B6\u25C0\u25FB-\u25FE\u2600-\u2604\u260E\u2611\u2614\u2615\u2618\u261D\u2620\u2622\u2623\u2626\u262A\u262E\u262F\u2638-\u263A\u2640\u2642\u2648-\u2653\u2660\u2663\u2665\u2666\u2668\u267B\u267F\u2692-\u2697\u2699\u269B\u269C\u26A0\u26A1\u26AA\u26AB\u26B0\u26B1\u26BD\u26BE\u26C4\u26C5\u26C8\u26CE\u26CF\u26D1\u26D3\u26D4\u26E9\u26EA\u26F0-\u26F5\u26F7-\u26FA\u26FD\u2702\u2705\u2708-\u270D\u270F\u2712\u2714\u2716\u271D\u2721\u2728\u2733\u2734\u2744\u2747\u274C\u274E\u2753-\u2755\u2757\u2763\u2764\u2795-\u2797\u27A1\u27B0\u27BF\u2934\u2935\u2B05-\u2B07\u2B1B\u2B1C\u2B50\u2B55\u3030\u303D\u3297\u3299]|\uD83C[\uDC04\uDCCF\uDD70\uDD71\uDD7E\uDD7F\uDD8E\uDD91-\uDD9A\uDDE6-\uDDFF\uDE01\uDE02\uDE1A\uDE2F\uDE32-\uDE3A\uDE50\uDE51\uDF00-\uDF21\uDF24-\uDF93\uDF96\uDF97\uDF99-\uDF9B\uDF9E-\uDFF0\uDFF3-\uDFF5\uDFF7-\uDFFF]|\uD83D[\uDC00-\uDCFD\uDCFF-\uDD3D\uDD49-\uDD4E\uDD50-\uDD67\uDD6F\uDD70\uDD73-\uDD7A\uDD87\uDD8A-\uDD8D\uDD90\uDD95\uDD96\uDDA4\uDDA5\uDDA8\uDDB1\uDDB2\uDDBC\uDDC2-\uDDC4\uDDD1-\uDDD3\uDDDC-\uDDDE\uDDE1\uDDE3\uDDE8\uDDEF\uDDF3\uDDFA-\uDE4F\uDE80-\uDEC5\uDECB-\uDED2\uDEE0-\uDEE5\uDEE9\uDEEB\uDEEC\uDEF0\uDEF3-\uDEF8]|\uD83E[\uDD10-\uDD3A\uDD3C-\uDD3E\uDD40-\uDD45\uDD47-\uDD4C\uDD50-\uDD6B\uDD80-\uDD97\uDDC0\uDDD0-\uDDE6])\uFE0F)/;
function getText(e) {
  var type = e.nodeType,
      result = "";

if (type === 1 || type === 9 || type === 11) {
    if (typeof e.textContent === "string") {
      return e.textContent;
    } else {
      for (e = e.firstChild; e; e = e.nextSibling) {
        result += getText(e);
      }
    }
  } else if (type === 3 || type === 4) {
    return e.nodeValue;
  }

return result;
}
function splitInnerHTML(element, delimiter, trim, preserveSpaces) {
  var node = element.firstChild,
      result = [],
      s;

while (node) {
    if (node.nodeType === 3) {
      s = (node.nodeValue + "").replace(/^\n+/g, "");

if (!preserveSpaces) {
        s = s.replace(/\s+/g, " ");
      }

result.push.apply(result, emojiSafeSplit(s, delimiter, trim, preserveSpaces));
    } else if ((node.nodeName + "").toLowerCase() === "br") {
      result[result.length - 1] += "<br>";
    } else {
      result.push(node.outerHTML);
    }

node = node.nextSibling;
  }

s = result.length;

while (s--) {
    result[s] === "&" && result.splice(s, 1, "&");
  }

return result;
}
/*
//smaller kb version that only handles the simpler emoji's, which is often perfectly adequate.

let _emoji = "[\uE000-\uF8FF]|\uD83C[\uDC00-\uDFFF]|\uD83D[\uDC00-\uDFFF]|[\u2694-\u2697]|\uD83E[\uDD10-\uDD5D]|[\uD800-\uDBFF][\uDC00-\uDFFF]",
	_emojiExp = new RegExp(_emoji),
	_emojiAndCharsExp = new RegExp(_emoji + "|.", "g"),
	_emojiSafeSplit = (text, delimiter, trim) => {
		if (trim) {
			text = text.replace(_trimExp, "");
		}
		return ((delimiter === "" || !delimiter) && _emojiExp.test(text)) ? text.match(_emojiAndCharsExp) : text.split(delimiter || "");
	};
 */

function emojiSafeSplit(text, delimiter, trim, preserveSpaces) {
  text += ""; // make sure it's cast as a string. Someone may pass in a number.

trim && (text = text.trim ? text.trim() : text.replace(_trimExp, "")); // IE9 and earlier compatibility

if (delimiter && delimiter !== "") {
    return text.replace(/>/g, ">").replace(/</g, "<").split(delimiter);
  }

var result = [],
      l = text.length,
      i = 0,
      j,
      character;

for (; i < l; i++) {
    character = text.charAt(i);

if (character.charCodeAt(0) >= 0xD800 && character.charCodeAt(0) <= 0xDBFF || text.charCodeAt(i + 1) >= 0xFE00 && text.charCodeAt(i + 1) <= 0xFE0F) {
      //special emoji characters use 2 or 4 unicode characters that we must keep together.
      j = ((text.substr(i, 12).split(emojiExp) || [])[1] || "").length || 2;
      character = text.substr(i, j);
      result.emoji = 1;
      i += j - 1;
    }

result.push(character === ">" ? ">" : character === "<" ? "<" : preserveSpaces && character === " " && (text.charAt(i - 1) === " " || text.charAt(i + 1) === " ") ? " " : character);
  }

return result;
}

/***/ }),

/***/ "./node_modules/stats.js/build/stats.min.js":
/*!**************************************************!*\
  !*** ./node_modules/stats.js/build/stats.min.js ***!
  \**************************************************/
/***/ (function(module) {

// stats.js - http://github.com/mrdoob/stats.js
(function(f,e){ true?module.exports=e():0})(this,function(){var f=function(){function e(a){c.appendChild(a.dom);return a}function u(a){for(var d=0;d<c.children.length;d++)c.children[d].style.display=d===a?"block":"none";l=a}var l=0,c=document.createElement("div");c.style.cssText="position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000";c.addEventListener("click",function(a){a.preventDefault();
u(++l%c.children.length)},!1);var k=(performance||Date).now(),g=k,a=0,r=e(new f.Panel("FPS","#0ff","#002")),h=e(new f.Panel("MS","#0f0","#020"));if(self.performance&&self.performance.memory)var t=e(new f.Panel("MB","#f08","#201"));u(0);return{REVISION:16,dom:c,addPanel:e,showPanel:u,begin:function(){k=(performance||Date).now()},end:function(){a++;var c=(performance||Date).now();h.update(c-k,200);if(c>g+1E3&&(r.update(1E3*a/(c-g),100),g=c,a=0,t)){var d=performance.memory;t.update(d.usedJSHeapSize/
1048576,d.jsHeapSizeLimit/1048576)}return c},update:function(){k=this.end()},domElement:c,setMode:u}};f.Panel=function(e,f,l){var c=Infinity,k=0,g=Math.round,a=g(window.devicePixelRatio||1),r=80*a,h=48*a,t=3*a,v=2*a,d=3*a,m=15*a,n=74*a,p=30*a,q=document.createElement("canvas");q.width=r;q.height=h;q.style.cssText="width:80px;height:48px";var b=q.getContext("2d");b.font="bold "+9*a+"px Helvetica,Arial,sans-serif";b.textBaseline="top";b.fillStyle=l;b.fillRect(0,0,r,h);b.fillStyle=f;b.fillText(e,t,v);
b.fillRect(d,m,n,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d,m,n,p);return{dom:q,update:function(h,w){c=Math.min(c,h);k=Math.max(k,h);b.fillStyle=l;b.globalAlpha=1;b.fillRect(0,0,r,m);b.fillStyle=f;b.fillText(g(h)+" "+e+" ("+g(c)+"-"+g(k)+")",t,v);b.drawImage(q,d+a,m,n-a,p,d,m,n-a,p);b.fillRect(d+n-a,m,a,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d+n-a,m,a,g((1-h/w)*p))}}};return f});

/***/ }),

/***/ "./node_modules/three/build/three.module.js":
/*!**************************************************!*\
  !*** ./node_modules/three/build/three.module.js ***!
  \**************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "ACESFilmicToneMapping": () => (/* binding */ ACESFilmicToneMapping),
/* harmony export */   "AddEquation": () => (/* binding */ AddEquation),
/* harmony export */   "AddOperation": () => (/* binding */ AddOperation),
/* harmony export */   "AdditiveAnimationBlendMode": () => (/* binding */ AdditiveAnimationBlendMode),
/* harmony export */   "AdditiveBlending": () => (/* binding */ AdditiveBlending),
/* harmony export */   "AlphaFormat": () => (/* binding */ AlphaFormat),
/* harmony export */   "AlwaysDepth": () => (/* binding */ AlwaysDepth),
/* harmony export */   "AlwaysStencilFunc": () => (/* binding */ AlwaysStencilFunc),
/* harmony export */   "AmbientLight": () => (/* binding */ AmbientLight),
/* harmony export */   "AmbientLightProbe": () => (/* binding */ AmbientLightProbe),
/* harmony export */   "AnimationAction": () => (/* binding */ AnimationAction),
/* harmony export */   "AnimationClip": () => (/* binding */ AnimationClip),
/* harmony export */   "AnimationLoader": () => (/* binding */ AnimationLoader),
/* harmony export */   "AnimationMixer": () => (/* binding */ AnimationMixer),
/* harmony export */   "AnimationObjectGroup": () => (/* binding */ AnimationObjectGroup),
/* harmony export */   "AnimationUtils": () => (/* binding */ AnimationUtils),
/* harmony export */   "ArcCurve": () => (/* binding */ ArcCurve),
/* harmony export */   "ArrayCamera": () => (/* binding */ ArrayCamera),
/* harmony export */   "ArrowHelper": () => (/* binding */ ArrowHelper),
/* harmony export */   "Audio": () => (/* binding */ Audio),
/* harmony export */   "AudioAnalyser": () => (/* binding */ AudioAnalyser),
/* harmony export */   "AudioContext": () => (/* binding */ AudioContext),
/* harmony export */   "AudioListener": () => (/* binding */ AudioListener),
/* harmony export */   "AudioLoader": () => (/* binding */ AudioLoader),
/* harmony export */   "AxesHelper": () => (/* binding */ AxesHelper),
/* harmony export */   "BackSide": () => (/* binding */ BackSide),
/* harmony export */   "BasicDepthPacking": () => (/* binding */ BasicDepthPacking),
/* harmony export */   "BasicShadowMap": () => (/* binding */ BasicShadowMap),
/* harmony export */   "Bone": () => (/* binding */ Bone),
/* harmony export */   "BooleanKeyframeTrack": () => (/* binding */ BooleanKeyframeTrack),
/* harmony export */   "Box2": () => (/* binding */ Box2),
/* harmony export */   "Box3": () => (/* binding */ Box3),
/* harmony export */   "Box3Helper": () => (/* binding */ Box3Helper),
/* harmony export */   "BoxBufferGeometry": () => (/* binding */ BoxBufferGeometry),
/* harmony export */   "BoxGeometry": () => (/* binding */ BoxGeometry),
/* harmony export */   "BoxHelper": () => (/* binding */ BoxHelper),
/* harmony export */   "BufferAttribute": () => (/* binding */ BufferAttribute),
/* harmony export */   "BufferGeometry": () => (/* binding */ BufferGeometry),
/* harmony export */   "BufferGeometryLoader": () => (/* binding */ BufferGeometryLoader),
/* harmony export */   "ByteType": () => (/* binding */ ByteType),
/* harmony export */   "Cache": () => (/* binding */ Cache),
/* harmony export */   "Camera": () => (/* binding */ Camera),
/* harmony export */   "CameraHelper": () => (/* binding */ CameraHelper),
/* harmony export */   "CanvasTexture": () => (/* binding */ CanvasTexture),
/* harmony export */   "CapsuleBufferGeometry": () => (/* binding */ CapsuleBufferGeometry),
/* harmony export */   "CapsuleGeometry": () => (/* binding */ CapsuleGeometry),
/* harmony export */   "CatmullRomCurve3": () => (/* binding */ CatmullRomCurve3),
/* harmony export */   "CineonToneMapping": () => (/* binding */ CineonToneMapping),
/* harmony export */   "CircleBufferGeometry": () => (/* binding */ CircleBufferGeometry),
/* harmony export */   "CircleGeometry": () => (/* binding */ CircleGeometry),
/* harmony export */   "ClampToEdgeWrapping": () => (/* binding */ ClampToEdgeWrapping),
/* harmony export */   "Clock": () => (/* binding */ Clock),
/* harmony export */   "Color": () => (/* binding */ Color),
/* harmony export */   "ColorKeyframeTrack": () => (/* binding */ ColorKeyframeTrack),
/* harmony export */   "ColorManagement": () => (/* binding */ ColorManagement),
/* harmony export */   "CompressedArrayTexture": () => (/* binding */ CompressedArrayTexture),
/* harmony export */   "CompressedTexture": () => (/* binding */ CompressedTexture),
/* harmony export */   "CompressedTextureLoader": () => (/* binding */ CompressedTextureLoader),
/* harmony export */   "ConeBufferGeometry": () => (/* binding */ ConeBufferGeometry),
/* harmony export */   "ConeGeometry": () => (/* binding */ ConeGeometry),
/* harmony export */   "CubeCamera": () => (/* binding */ CubeCamera),
/* harmony export */   "CubeReflectionMapping": () => (/* binding */ CubeReflectionMapping),
/* harmony export */   "CubeRefractionMapping": () => (/* binding */ CubeRefractionMapping),
/* harmony export */   "CubeTexture": () => (/* binding */ CubeTexture),
/* harmony export */   "CubeTextureLoader": () => (/* binding */ CubeTextureLoader),
/* harmony export */   "CubeUVReflectionMapping": () => (/* binding */ CubeUVReflectionMapping),
/* harmony export */   "CubicBezierCurve": () => (/* binding */ CubicBezierCurve),
/* harmony export */   "CubicBezierCurve3": () => (/* binding */ CubicBezierCurve3),
/* harmony export */   "CubicInterpolant": () => (/* binding */ CubicInterpolant),
/* harmony export */   "CullFaceBack": () => (/* binding */ CullFaceBack),
/* harmony export */   "CullFaceFront": () => (/* binding */ CullFaceFront),
/* harmony export */   "CullFaceFrontBack": () => (/* binding */ CullFaceFrontBack),
/* harmony export */   "CullFaceNone": () => (/* binding */ CullFaceNone),
/* harmony export */   "Curve": () => (/* binding */ Curve),
/* harmony export */   "CurvePath": () => (/* binding */ CurvePath),
/* harmony export */   "CustomBlending": () => (/* binding */ CustomBlending),
/* harmony export */   "CustomToneMapping": () => (/* binding */ CustomToneMapping),
/* harmony export */   "CylinderBufferGeometry": () => (/* binding */ CylinderBufferGeometry),
/* harmony export */   "CylinderGeometry": () => (/* binding */ CylinderGeometry),
/* harmony export */   "Cylindrical": () => (/* binding */ Cylindrical),
/* harmony export */   "Data3DTexture": () => (/* binding */ Data3DTexture),
/* harmony export */   "DataArrayTexture": () => (/* binding */ DataArrayTexture),
/* harmony export */   "DataTexture": () => (/* binding */ DataTexture),
/* harmony export */   "DataTextureLoader": () => (/* binding */ DataTextureLoader),
/* harmony export */   "DataUtils": () => (/* binding */ DataUtils),
/* harmony export */   "DecrementStencilOp": () => (/* binding */ DecrementStencilOp),
/* harmony export */   "DecrementWrapStencilOp": () => (/* binding */ DecrementWrapStencilOp),
/* harmony export */   "DefaultLoadingManager": () => (/* binding */ DefaultLoadingManager),
/* harmony export */   "DepthFormat": () => (/* binding */ DepthFormat),
/* harmony export */   "DepthStencilFormat": () => (/* binding */ DepthStencilFormat),
/* harmony export */   "DepthTexture": () => (/* binding */ DepthTexture),
/* harmony export */   "DirectionalLight": () => (/* binding */ DirectionalLight),
/* harmony export */   "DirectionalLightHelper": () => (/* binding */ DirectionalLightHelper),
/* harmony export */   "DiscreteInterpolant": () => (/* binding */ DiscreteInterpolant),
/* harmony export */   "DisplayP3ColorSpace": () => (/* binding */ DisplayP3ColorSpace),
/* harmony export */   "DodecahedronBufferGeometry": () => (/* binding */ DodecahedronBufferGeometry),
/* harmony export */   "DodecahedronGeometry": () => (/* binding */ DodecahedronGeometry),
/* harmony export */   "DoubleSide": () => (/* binding */ DoubleSide),
/* harmony export */   "DstAlphaFactor": () => (/* binding */ DstAlphaFactor),
/* harmony export */   "DstColorFactor": () => (/* binding */ DstColorFactor),
/* harmony export */   "DynamicCopyUsage": () => (/* binding */ DynamicCopyUsage),
/* harmony export */   "DynamicDrawUsage": () => (/* binding */ DynamicDrawUsage),
/* harmony export */   "DynamicReadUsage": () => (/* binding */ DynamicReadUsage),
/* harmony export */   "EdgesGeometry": () => (/* binding */ EdgesGeometry),
/* harmony export */   "EllipseCurve": () => (/* binding */ EllipseCurve),
/* harmony export */   "EqualDepth": () => (/* binding */ EqualDepth),
/* harmony export */   "EqualStencilFunc": () => (/* binding */ EqualStencilFunc),
/* harmony export */   "EquirectangularReflectionMapping": () => (/* binding */ EquirectangularReflectionMapping),
/* harmony export */   "EquirectangularRefractionMapping": () => (/* binding */ EquirectangularRefractionMapping),
/* harmony export */   "Euler": () => (/* binding */ Euler),
/* harmony export */   "EventDispatcher": () => (/* binding */ EventDispatcher),
/* harmony export */   "ExtrudeBufferGeometry": () => (/* binding */ ExtrudeBufferGeometry),
/* harmony export */   "ExtrudeGeometry": () => (/* binding */ ExtrudeGeometry),
/* harmony export */   "FileLoader": () => (/* binding */ FileLoader),
/* harmony export */   "Float16BufferAttribute": () => (/* binding */ Float16BufferAttribute),
/* harmony export */   "Float32BufferAttribute": () => (/* binding */ Float32BufferAttribute),
/* harmony export */   "Float64BufferAttribute": () => (/* binding */ Float64BufferAttribute),
/* harmony export */   "FloatType": () => (/* binding */ FloatType),
/* harmony export */   "Fog": () => (/* binding */ Fog),
/* harmony export */   "FogExp2": () => (/* binding */ FogExp2),
/* harmony export */   "FramebufferTexture": () => (/* binding */ FramebufferTexture),
/* harmony export */   "FrontSide": () => (/* binding */ FrontSide),
/* harmony export */   "Frustum": () => (/* binding */ Frustum),
/* harmony export */   "GLBufferAttribute": () => (/* binding */ GLBufferAttribute),
/* harmony export */   "GLSL1": () => (/* binding */ GLSL1),
/* harmony export */   "GLSL3": () => (/* binding */ GLSL3),
/* harmony export */   "GreaterDepth": () => (/* binding */ GreaterDepth),
/* harmony export */   "GreaterEqualDepth": () => (/* binding */ GreaterEqualDepth),
/* harmony export */   "GreaterEqualStencilFunc": () => (/* binding */ GreaterEqualStencilFunc),
/* harmony export */   "GreaterStencilFunc": () => (/* binding */ GreaterStencilFunc),
/* harmony export */   "GridHelper": () => (/* binding */ GridHelper),
/* harmony export */   "Group": () => (/* binding */ Group),
/* harmony export */   "HalfFloatType": () => (/* binding */ HalfFloatType),
/* harmony export */   "HemisphereLight": () => (/* binding */ HemisphereLight),
/* harmony export */   "HemisphereLightHelper": () => (/* binding */ HemisphereLightHelper),
/* harmony export */   "HemisphereLightProbe": () => (/* binding */ HemisphereLightProbe),
/* harmony export */   "IcosahedronBufferGeometry": () => (/* binding */ IcosahedronBufferGeometry),
/* harmony export */   "IcosahedronGeometry": () => (/* binding */ IcosahedronGeometry),
/* harmony export */   "ImageBitmapLoader": () => (/* binding */ ImageBitmapLoader),
/* harmony export */   "ImageLoader": () => (/* binding */ ImageLoader),
/* harmony export */   "ImageUtils": () => (/* binding */ ImageUtils),
/* harmony export */   "IncrementStencilOp": () => (/* binding */ IncrementStencilOp),
/* harmony export */   "IncrementWrapStencilOp": () => (/* binding */ IncrementWrapStencilOp),
/* harmony export */   "InstancedBufferAttribute": () => (/* binding */ InstancedBufferAttribute),
/* harmony export */   "InstancedBufferGeometry": () => (/* binding */ InstancedBufferGeometry),
/* harmony export */   "InstancedInterleavedBuffer": () => (/* binding */ InstancedInterleavedBuffer),
/* harmony export */   "InstancedMesh": () => (/* binding */ InstancedMesh),
/* harmony export */   "Int16BufferAttribute": () => (/* binding */ Int16BufferAttribute),
/* harmony export */   "Int32BufferAttribute": () => (/* binding */ Int32BufferAttribute),
/* harmony export */   "Int8BufferAttribute": () => (/* binding */ Int8BufferAttribute),
/* harmony export */   "IntType": () => (/* binding */ IntType),
/* harmony export */   "InterleavedBuffer": () => (/* binding */ InterleavedBuffer),
/* harmony export */   "InterleavedBufferAttribute": () => (/* binding */ InterleavedBufferAttribute),
/* harmony export */   "Interpolant": () => (/* binding */ Interpolant),
/* harmony export */   "InterpolateDiscrete": () => (/* binding */ InterpolateDiscrete),
/* harmony export */   "InterpolateLinear": () => (/* binding */ InterpolateLinear),
/* harmony export */   "InterpolateSmooth": () => (/* binding */ InterpolateSmooth),
/* harmony export */   "InvertStencilOp": () => (/* binding */ InvertStencilOp),
/* harmony export */   "KeepStencilOp": () => (/* binding */ KeepStencilOp),
/* harmony export */   "KeyframeTrack": () => (/* binding */ KeyframeTrack),
/* harmony export */   "LOD": () => (/* binding */ LOD),
/* harmony export */   "LatheBufferGeometry": () => (/* binding */ LatheBufferGeometry),
/* harmony export */   "LatheGeometry": () => (/* binding */ LatheGeometry),
/* harmony export */   "Layers": () => (/* binding */ Layers),
/* harmony export */   "LessDepth": () => (/* binding */ LessDepth),
/* harmony export */   "LessEqualDepth": () => (/* binding */ LessEqualDepth),
/* harmony export */   "LessEqualStencilFunc": () => (/* binding */ LessEqualStencilFunc),
/* harmony export */   "LessStencilFunc": () => (/* binding */ LessStencilFunc),
/* harmony export */   "Light": () => (/* binding */ Light),
/* harmony export */   "LightProbe": () => (/* binding */ LightProbe),
/* harmony export */   "Line": () => (/* binding */ Line),
/* harmony export */   "Line3": () => (/* binding */ Line3),
/* harmony export */   "LineBasicMaterial": () => (/* binding */ LineBasicMaterial),
/* harmony export */   "LineCurve": () => (/* binding */ LineCurve),
/* harmony export */   "LineCurve3": () => (/* binding */ LineCurve3),
/* harmony export */   "LineDashedMaterial": () => (/* binding */ LineDashedMaterial),
/* harmony export */   "LineLoop": () => (/* binding */ LineLoop),
/* harmony export */   "LineSegments": () => (/* binding */ LineSegments),
/* harmony export */   "LinearEncoding": () => (/* binding */ LinearEncoding),
/* harmony export */   "LinearFilter": () => (/* binding */ LinearFilter),
/* harmony export */   "LinearInterpolant": () => (/* binding */ LinearInterpolant),
/* harmony export */   "LinearMipMapLinearFilter": () => (/* binding */ LinearMipMapLinearFilter),
/* harmony export */   "LinearMipMapNearestFilter": () => (/* binding */ LinearMipMapNearestFilter),
/* harmony export */   "LinearMipmapLinearFilter": () => (/* binding */ LinearMipmapLinearFilter),
/* harmony export */   "LinearMipmapNearestFilter": () => (/* binding */ LinearMipmapNearestFilter),
/* harmony export */   "LinearSRGBColorSpace": () => (/* binding */ LinearSRGBColorSpace),
/* harmony export */   "LinearToneMapping": () => (/* binding */ LinearToneMapping),
/* harmony export */   "Loader": () => (/* binding */ Loader),
/* harmony export */   "LoaderUtils": () => (/* binding */ LoaderUtils),
/* harmony export */   "LoadingManager": () => (/* binding */ LoadingManager),
/* harmony export */   "LoopOnce": () => (/* binding */ LoopOnce),
/* harmony export */   "LoopPingPong": () => (/* binding */ LoopPingPong),
/* harmony export */   "LoopRepeat": () => (/* binding */ LoopRepeat),
/* harmony export */   "LuminanceAlphaFormat": () => (/* binding */ LuminanceAlphaFormat),
/* harmony export */   "LuminanceFormat": () => (/* binding */ LuminanceFormat),
/* harmony export */   "MOUSE": () => (/* binding */ MOUSE),
/* harmony export */   "Material": () => (/* binding */ Material),
/* harmony export */   "MaterialLoader": () => (/* binding */ MaterialLoader),
/* harmony export */   "MathUtils": () => (/* binding */ MathUtils),
/* harmony export */   "Matrix3": () => (/* binding */ Matrix3),
/* harmony export */   "Matrix4": () => (/* binding */ Matrix4),
/* harmony export */   "MaxEquation": () => (/* binding */ MaxEquation),
/* harmony export */   "Mesh": () => (/* binding */ Mesh),
/* harmony export */   "MeshBasicMaterial": () => (/* binding */ MeshBasicMaterial),
/* harmony export */   "MeshDepthMaterial": () => (/* binding */ MeshDepthMaterial),
/* harmony export */   "MeshDistanceMaterial": () => (/* binding */ MeshDistanceMaterial),
/* harmony export */   "MeshLambertMaterial": () => (/* binding */ MeshLambertMaterial),
/* harmony export */   "MeshMatcapMaterial": () => (/* binding */ MeshMatcapMaterial),
/* harmony export */   "MeshNormalMaterial": () => (/* binding */ MeshNormalMaterial),
/* harmony export */   "MeshPhongMaterial": () => (/* binding */ MeshPhongMaterial),
/* harmony export */   "MeshPhysicalMaterial": () => (/* binding */ MeshPhysicalMaterial),
/* harmony export */   "MeshStandardMaterial": () => (/* binding */ MeshStandardMaterial),
/* harmony export */   "MeshToonMaterial": () => (/* binding */ MeshToonMaterial),
/* harmony export */   "MinEquation": () => (/* binding */ MinEquation),
/* harmony export */   "MirroredRepeatWrapping": () => (/* binding */ MirroredRepeatWrapping),
/* harmony export */   "MixOperation": () => (/* binding */ MixOperation),
/* harmony export */   "MultiplyBlending": () => (/* binding */ MultiplyBlending),
/* harmony export */   "MultiplyOperation": () => (/* binding */ MultiplyOperation),
/* harmony export */   "NearestFilter": () => (/* binding */ NearestFilter),
/* harmony export */   "NearestMipMapLinearFilter": () => (/* binding */ NearestMipMapLinearFilter),
/* harmony export */   "NearestMipMapNearestFilter": () => (/* binding */ NearestMipMapNearestFilter),
/* harmony export */   "NearestMipmapLinearFilter": () => (/* binding */ NearestMipmapLinearFilter),
/* harmony export */   "NearestMipmapNearestFilter": () => (/* binding */ NearestMipmapNearestFilter),
/* harmony export */   "NeverDepth": () => (/* binding */ NeverDepth),
/* harmony export */   "NeverStencilFunc": () => (/* binding */ NeverStencilFunc),
/* harmony export */   "NoBlending": () => (/* binding */ NoBlending),
/* harmony export */   "NoColorSpace": () => (/* binding */ NoColorSpace),
/* harmony export */   "NoToneMapping": () => (/* binding */ NoToneMapping),
/* harmony export */   "NormalAnimationBlendMode": () => (/* binding */ NormalAnimationBlendMode),
/* harmony export */   "NormalBlending": () => (/* binding */ NormalBlending),
/* harmony export */   "NotEqualDepth": () => (/* binding */ NotEqualDepth),
/* harmony export */   "NotEqualStencilFunc": () => (/* binding */ NotEqualStencilFunc),
/* harmony export */   "NumberKeyframeTrack": () => (/* binding */ NumberKeyframeTrack),
/* harmony export */   "Object3D": () => (/* binding */ Object3D),
/* harmony export */   "ObjectLoader": () => (/* binding */ ObjectLoader),
/* harmony export */   "ObjectSpaceNormalMap": () => (/* binding */ ObjectSpaceNormalMap),
/* harmony export */   "OctahedronBufferGeometry": () => (/* binding */ OctahedronBufferGeometry),
/* harmony export */   "OctahedronGeometry": () => (/* binding */ OctahedronGeometry),
/* harmony export */   "OneFactor": () => (/* binding */ OneFactor),
/* harmony export */   "OneMinusDstAlphaFactor": () => (/* binding */ OneMinusDstAlphaFactor),
/* harmony export */   "OneMinusDstColorFactor": () => (/* binding */ OneMinusDstColorFactor),
/* harmony export */   "OneMinusSrcAlphaFactor": () => (/* binding */ OneMinusSrcAlphaFactor),
/* harmony export */   "OneMinusSrcColorFactor": () => (/* binding */ OneMinusSrcColorFactor),
/* harmony export */   "OrthographicCamera": () => (/* binding */ OrthographicCamera),
/* harmony export */   "PCFShadowMap": () => (/* binding */ PCFShadowMap),
/* harmony export */   "PCFSoftShadowMap": () => (/* binding */ PCFSoftShadowMap),
/* harmony export */   "PMREMGenerator": () => (/* binding */ PMREMGenerator),
/* harmony export */   "Path": () => (/* binding */ Path),
/* harmony export */   "PerspectiveCamera": () => (/* binding */ PerspectiveCamera),
/* harmony export */   "Plane": () => (/* binding */ Plane),
/* harmony export */   "PlaneBufferGeometry": () => (/* binding */ PlaneBufferGeometry),
/* harmony export */   "PlaneGeometry": () => (/* binding */ PlaneGeometry),
/* harmony export */   "PlaneHelper": () => (/* binding */ PlaneHelper),
/* harmony export */   "PointLight": () => (/* binding */ PointLight),
/* harmony export */   "PointLightHelper": () => (/* binding */ PointLightHelper),
/* harmony export */   "Points": () => (/* binding */ Points),
/* harmony export */   "PointsMaterial": () => (/* binding */ PointsMaterial),
/* harmony export */   "PolarGridHelper": () => (/* binding */ PolarGridHelper),
/* harmony export */   "PolyhedronBufferGeometry": () => (/* binding */ PolyhedronBufferGeometry),
/* harmony export */   "PolyhedronGeometry": () => (/* binding */ PolyhedronGeometry),
/* harmony export */   "PositionalAudio": () => (/* binding */ PositionalAudio),
/* harmony export */   "PropertyBinding": () => (/* binding */ PropertyBinding),
/* harmony export */   "PropertyMixer": () => (/* binding */ PropertyMixer),
/* harmony export */   "QuadraticBezierCurve": () => (/* binding */ QuadraticBezierCurve),
/* harmony export */   "QuadraticBezierCurve3": () => (/* binding */ QuadraticBezierCurve3),
/* harmony export */   "Quaternion": () => (/* binding */ Quaternion),
/* harmony export */   "QuaternionKeyframeTrack": () => (/* binding */ QuaternionKeyframeTrack),
/* harmony export */   "QuaternionLinearInterpolant": () => (/* binding */ QuaternionLinearInterpolant),
/* harmony export */   "RED_GREEN_RGTC2_Format": () => (/* binding */ RED_GREEN_RGTC2_Format),
/* harmony export */   "RED_RGTC1_Format": () => (/* binding */ RED_RGTC1_Format),
/* harmony export */   "REVISION": () => (/* binding */ REVISION),
/* harmony export */   "RGBADepthPacking": () => (/* binding */ RGBADepthPacking),
/* harmony export */   "RGBAFormat": () => (/* binding */ RGBAFormat),
/* harmony export */   "RGBAIntegerFormat": () => (/* binding */ RGBAIntegerFormat),
/* harmony export */   "RGBA_ASTC_10x10_Format": () => (/* binding */ RGBA_ASTC_10x10_Format),
/* harmony export */   "RGBA_ASTC_10x5_Format": () => (/* binding */ RGBA_ASTC_10x5_Format),
/* harmony export */   "RGBA_ASTC_10x6_Format": () => (/* binding */ RGBA_ASTC_10x6_Format),
/* harmony export */   "RGBA_ASTC_10x8_Format": () => (/* binding */ RGBA_ASTC_10x8_Format),
/* harmony export */   "RGBA_ASTC_12x10_Format": () => (/* binding */ RGBA_ASTC_12x10_Format),
/* harmony export */   "RGBA_ASTC_12x12_Format": () => (/* binding */ RGBA_ASTC_12x12_Format),
/* harmony export */   "RGBA_ASTC_4x4_Format": () => (/* binding */ RGBA_ASTC_4x4_Format),
/* harmony export */   "RGBA_ASTC_5x4_Format": () => (/* binding */ RGBA_ASTC_5x4_Format),
/* harmony export */   "RGBA_ASTC_5x5_Format": () => (/* binding */ RGBA_ASTC_5x5_Format),
/* harmony export */   "RGBA_ASTC_6x5_Format": () => (/* binding */ RGBA_ASTC_6x5_Format),
/* harmony export */   "RGBA_ASTC_6x6_Format": () => (/* binding */ RGBA_ASTC_6x6_Format),
/* harmony export */   "RGBA_ASTC_8x5_Format": () => (/* binding */ RGBA_ASTC_8x5_Format),
/* harmony export */   "RGBA_ASTC_8x6_Format": () => (/* binding */ RGBA_ASTC_8x6_Format),
/* harmony export */   "RGBA_ASTC_8x8_Format": () => (/* binding */ RGBA_ASTC_8x8_Format),
/* harmony export */   "RGBA_BPTC_Format": () => (/* binding */ RGBA_BPTC_Format),
/* harmony export */   "RGBA_ETC2_EAC_Format": () => (/* binding */ RGBA_ETC2_EAC_Format),
/* harmony export */   "RGBA_PVRTC_2BPPV1_Format": () => (/* binding */ RGBA_PVRTC_2BPPV1_Format),
/* harmony export */   "RGBA_PVRTC_4BPPV1_Format": () => (/* binding */ RGBA_PVRTC_4BPPV1_Format),
/* harmony export */   "RGBA_S3TC_DXT1_Format": () => (/* binding */ RGBA_S3TC_DXT1_Format),
/* harmony export */   "RGBA_S3TC_DXT3_Format": () => (/* binding */ RGBA_S3TC_DXT3_Format),
/* harmony export */   "RGBA_S3TC_DXT5_Format": () => (/* binding */ RGBA_S3TC_DXT5_Format),
/* harmony export */   "RGB_ETC1_Format": () => (/* binding */ RGB_ETC1_Format),
/* harmony export */   "RGB_ETC2_Format": () => (/* binding */ RGB_ETC2_Format),
/* harmony export */   "RGB_PVRTC_2BPPV1_Format": () => (/* binding */ RGB_PVRTC_2BPPV1_Format),
/* harmony export */   "RGB_PVRTC_4BPPV1_Format": () => (/* binding */ RGB_PVRTC_4BPPV1_Format),
/* harmony export */   "RGB_S3TC_DXT1_Format": () => (/* binding */ RGB_S3TC_DXT1_Format),
/* harmony export */   "RGFormat": () => (/* binding */ RGFormat),
/* harmony export */   "RGIntegerFormat": () => (/* binding */ RGIntegerFormat),
/* harmony export */   "RawShaderMaterial": () => (/* binding */ RawShaderMaterial),
/* harmony export */   "Ray": () => (/* binding */ Ray),
/* harmony export */   "Raycaster": () => (/* binding */ Raycaster),
/* harmony export */   "RectAreaLight": () => (/* binding */ RectAreaLight),
/* harmony export */   "RedFormat": () => (/* binding */ RedFormat),
/* harmony export */   "RedIntegerFormat": () => (/* binding */ RedIntegerFormat),
/* harmony export */   "ReinhardToneMapping": () => (/* binding */ ReinhardToneMapping),
/* harmony export */   "RepeatWrapping": () => (/* binding */ RepeatWrapping),
/* harmony export */   "ReplaceStencilOp": () => (/* binding */ ReplaceStencilOp),
/* harmony export */   "ReverseSubtractEquation": () => (/* binding */ ReverseSubtractEquation),
/* harmony export */   "RingBufferGeometry": () => (/* binding */ RingBufferGeometry),
/* harmony export */   "RingGeometry": () => (/* binding */ RingGeometry),
/* harmony export */   "SIGNED_RED_GREEN_RGTC2_Format": () => (/* binding */ SIGNED_RED_GREEN_RGTC2_Format),
/* harmony export */   "SIGNED_RED_RGTC1_Format": () => (/* binding */ SIGNED_RED_RGTC1_Format),
/* harmony export */   "SRGBColorSpace": () => (/* binding */ SRGBColorSpace),
/* harmony export */   "Scene": () => (/* binding */ Scene),
/* harmony export */   "ShaderChunk": () => (/* binding */ ShaderChunk),
/* harmony export */   "ShaderLib": () => (/* binding */ ShaderLib),
/* harmony export */   "ShaderMaterial": () => (/* binding */ ShaderMaterial),
/* harmony export */   "ShadowMaterial": () => (/* binding */ ShadowMaterial),
/* harmony export */   "Shape": () => (/* binding */ Shape),
/* harmony export */   "ShapeBufferGeometry": () => (/* binding */ ShapeBufferGeometry),
/* harmony export */   "ShapeGeometry": () => (/* binding */ ShapeGeometry),
/* harmony export */   "ShapePath": () => (/* binding */ ShapePath),
/* harmony export */   "ShapeUtils": () => (/* binding */ ShapeUtils),
/* harmony export */   "ShortType": () => (/* binding */ ShortType),
/* harmony export */   "Skeleton": () => (/* binding */ Skeleton),
/* harmony export */   "SkeletonHelper": () => (/* binding */ SkeletonHelper),
/* harmony export */   "SkinnedMesh": () => (/* binding */ SkinnedMesh),
/* harmony export */   "Source": () => (/* binding */ Source),
/* harmony export */   "Sphere": () => (/* binding */ Sphere),
/* harmony export */   "SphereBufferGeometry": () => (/* binding */ SphereBufferGeometry),
/* harmony export */   "SphereGeometry": () => (/* binding */ SphereGeometry),
/* harmony export */   "Spherical": () => (/* binding */ Spherical),
/* harmony export */   "SphericalHarmonics3": () => (/* binding */ SphericalHarmonics3),
/* harmony export */   "SplineCurve": () => (/* binding */ SplineCurve),
/* harmony export */   "SpotLight": () => (/* binding */ SpotLight),
/* harmony export */   "SpotLightHelper": () => (/* binding */ SpotLightHelper),
/* harmony export */   "Sprite": () => (/* binding */ Sprite),
/* harmony export */   "SpriteMaterial": () => (/* binding */ SpriteMaterial),
/* harmony export */   "SrcAlphaFactor": () => (/* binding */ SrcAlphaFactor),
/* harmony export */   "SrcAlphaSaturateFactor": () => (/* binding */ SrcAlphaSaturateFactor),
/* harmony export */   "SrcColorFactor": () => (/* binding */ SrcColorFactor),
/* harmony export */   "StaticCopyUsage": () => (/* binding */ StaticCopyUsage),
/* harmony export */   "StaticDrawUsage": () => (/* binding */ StaticDrawUsage),
/* harmony export */   "StaticReadUsage": () => (/* binding */ StaticReadUsage),
/* harmony export */   "StereoCamera": () => (/* binding */ StereoCamera),
/* harmony export */   "StreamCopyUsage": () => (/* binding */ StreamCopyUsage),
/* harmony export */   "StreamDrawUsage": () => (/* binding */ StreamDrawUsage),
/* harmony export */   "StreamReadUsage": () => (/* binding */ StreamReadUsage),
/* harmony export */   "StringKeyframeTrack": () => (/* binding */ StringKeyframeTrack),
/* harmony export */   "SubtractEquation": () => (/* binding */ SubtractEquation),
/* harmony export */   "SubtractiveBlending": () => (/* binding */ SubtractiveBlending),
/* harmony export */   "TOUCH": () => (/* binding */ TOUCH),
/* harmony export */   "TangentSpaceNormalMap": () => (/* binding */ TangentSpaceNormalMap),
/* harmony export */   "TetrahedronBufferGeometry": () => (/* binding */ TetrahedronBufferGeometry),
/* harmony export */   "TetrahedronGeometry": () => (/* binding */ TetrahedronGeometry),
/* harmony export */   "Texture": () => (/* binding */ Texture),
/* harmony export */   "TextureLoader": () => (/* binding */ TextureLoader),
/* harmony export */   "TorusBufferGeometry": () => (/* binding */ TorusBufferGeometry),
/* harmony export */   "TorusGeometry": () => (/* binding */ TorusGeometry),
/* harmony export */   "TorusKnotBufferGeometry": () => (/* binding */ TorusKnotBufferGeometry),
/* harmony export */   "TorusKnotGeometry": () => (/* binding */ TorusKnotGeometry),
/* harmony export */   "Triangle": () => (/* binding */ Triangle),
/* harmony export */   "TriangleFanDrawMode": () => (/* binding */ TriangleFanDrawMode),
/* harmony export */   "TriangleStripDrawMode": () => (/* binding */ TriangleStripDrawMode),
/* harmony export */   "TrianglesDrawMode": () => (/* binding */ TrianglesDrawMode),
/* harmony export */   "TubeBufferGeometry": () => (/* binding */ TubeBufferGeometry),
/* harmony export */   "TubeGeometry": () => (/* binding */ TubeGeometry),
/* harmony export */   "TwoPassDoubleSide": () => (/* binding */ TwoPassDoubleSide),
/* harmony export */   "UVMapping": () => (/* binding */ UVMapping),
/* harmony export */   "Uint16BufferAttribute": () => (/* binding */ Uint16BufferAttribute),
/* harmony export */   "Uint32BufferAttribute": () => (/* binding */ Uint32BufferAttribute),
/* harmony export */   "Uint8BufferAttribute": () => (/* binding */ Uint8BufferAttribute),
/* harmony export */   "Uint8ClampedBufferAttribute": () => (/* binding */ Uint8ClampedBufferAttribute),
/* harmony export */   "Uniform": () => (/* binding */ Uniform),
/* harmony export */   "UniformsGroup": () => (/* binding */ UniformsGroup),
/* harmony export */   "UniformsLib": () => (/* binding */ UniformsLib),
/* harmony export */   "UniformsUtils": () => (/* binding */ UniformsUtils),
/* harmony export */   "UnsignedByteType": () => (/* binding */ UnsignedByteType),
/* harmony export */   "UnsignedInt248Type": () => (/* binding */ UnsignedInt248Type),
/* harmony export */   "UnsignedIntType": () => (/* binding */ UnsignedIntType),
/* harmony export */   "UnsignedShort4444Type": () => (/* binding */ UnsignedShort4444Type),
/* harmony export */   "UnsignedShort5551Type": () => (/* binding */ UnsignedShort5551Type),
/* harmony export */   "UnsignedShortType": () => (/* binding */ UnsignedShortType),
/* harmony export */   "VSMShadowMap": () => (/* binding */ VSMShadowMap),
/* harmony export */   "Vector2": () => (/* binding */ Vector2),
/* harmony export */   "Vector3": () => (/* binding */ Vector3),
/* harmony export */   "Vector4": () => (/* binding */ Vector4),
/* harmony export */   "VectorKeyframeTrack": () => (/* binding */ VectorKeyframeTrack),
/* harmony export */   "VideoTexture": () => (/* binding */ VideoTexture),
/* harmony export */   "WebGL1Renderer": () => (/* binding */ WebGL1Renderer),
/* harmony export */   "WebGL3DRenderTarget": () => (/* binding */ WebGL3DRenderTarget),
/* harmony export */   "WebGLArrayRenderTarget": () => (/* binding */ WebGLArrayRenderTarget),
/* harmony export */   "WebGLCubeRenderTarget": () => (/* binding */ WebGLCubeRenderTarget),
/* harmony export */   "WebGLMultipleRenderTargets": () => (/* binding */ WebGLMultipleRenderTargets),
/* harmony export */   "WebGLRenderTarget": () => (/* binding */ WebGLRenderTarget),
/* harmony export */   "WebGLRenderer": () => (/* binding */ WebGLRenderer),
/* harmony export */   "WebGLUtils": () => (/* binding */ WebGLUtils),
/* harmony export */   "WireframeGeometry": () => (/* binding */ WireframeGeometry),
/* harmony export */   "WrapAroundEnding": () => (/* binding */ WrapAroundEnding),
/* harmony export */   "ZeroCurvatureEnding": () => (/* binding */ ZeroCurvatureEnding),
/* harmony export */   "ZeroFactor": () => (/* binding */ ZeroFactor),
/* harmony export */   "ZeroSlopeEnding": () => (/* binding */ ZeroSlopeEnding),
/* harmony export */   "ZeroStencilOp": () => (/* binding */ ZeroStencilOp),
/* harmony export */   "_SRGBAFormat": () => (/* binding */ _SRGBAFormat),
/* harmony export */   "sRGBEncoding": () => (/* binding */ sRGBEncoding)
/* harmony export */ });
/**
 * @license
 * Copyright 2010-2023 Three.js Authors
 * SPDX-License-Identifier: MIT
 */
const REVISION = '151';
const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
const CullFaceNone = 0;
const CullFaceBack = 1;
const CullFaceFront = 2;
const CullFaceFrontBack = 3;
const BasicShadowMap = 0;
const PCFShadowMap = 1;
const PCFSoftShadowMap = 2;
const VSMShadowMap = 3;
const FrontSide = 0;
const BackSide = 1;
const DoubleSide = 2;
const TwoPassDoubleSide = 2; // r149
const NoBlending = 0;
const NormalBlending = 1;
const AdditiveBlending = 2;
const SubtractiveBlending = 3;
const MultiplyBlending = 4;
const CustomBlending = 5;
const AddEquation = 100;
const SubtractEquation = 101;
const ReverseSubtractEquation = 102;
const MinEquation = 103;
const MaxEquation = 104;
const ZeroFactor = 200;
const OneFactor = 201;
const SrcColorFactor = 202;
const OneMinusSrcColorFactor = 203;
const SrcAlphaFactor = 204;
const OneMinusSrcAlphaFactor = 205;
const DstAlphaFactor = 206;
const OneMinusDstAlphaFactor = 207;
const DstColorFactor = 208;
const OneMinusDstColorFactor = 209;
const SrcAlphaSaturateFactor = 210;
const NeverDepth = 0;
const AlwaysDepth = 1;
const LessDepth = 2;
const LessEqualDepth = 3;
const EqualDepth = 4;
const GreaterEqualDepth = 5;
const GreaterDepth = 6;
const NotEqualDepth = 7;
const MultiplyOperation = 0;
const MixOperation = 1;
const AddOperation = 2;
const NoToneMapping = 0;
const LinearToneMapping = 1;
const ReinhardToneMapping = 2;
const CineonToneMapping = 3;
const ACESFilmicToneMapping = 4;
const CustomToneMapping = 5;

const UVMapping = 300;
const CubeReflectionMapping = 301;
const CubeRefractionMapping = 302;
const EquirectangularReflectionMapping = 303;
const EquirectangularRefractionMapping = 304;
const CubeUVReflectionMapping = 306;
const RepeatWrapping = 1000;
const ClampToEdgeWrapping = 1001;
const MirroredRepeatWrapping = 1002;
const NearestFilter = 1003;
const NearestMipmapNearestFilter = 1004;
const NearestMipMapNearestFilter = 1004;
const NearestMipmapLinearFilter = 1005;
const NearestMipMapLinearFilter = 1005;
const LinearFilter = 1006;
const LinearMipmapNearestFilter = 1007;
const LinearMipMapNearestFilter = 1007;
const LinearMipmapLinearFilter = 1008;
const LinearMipMapLinearFilter = 1008;
const UnsignedByteType = 1009;
const ByteType = 1010;
const ShortType = 1011;
const UnsignedShortType = 1012;
const IntType = 1013;
const UnsignedIntType = 1014;
const FloatType = 1015;
const HalfFloatType = 1016;
const UnsignedShort4444Type = 1017;
const UnsignedShort5551Type = 1018;
const UnsignedInt248Type = 1020;
const AlphaFormat = 1021;
const RGBAFormat = 1023;
const LuminanceFormat = 1024;
const LuminanceAlphaFormat = 1025;
const DepthFormat = 1026;
const DepthStencilFormat = 1027;
const RedFormat = 1028;
const RedIntegerFormat = 1029;
const RGFormat = 1030;
const RGIntegerFormat = 1031;
const RGBAIntegerFormat = 1033;

const RGB_S3TC_DXT1_Format = 33776;
const RGBA_S3TC_DXT1_Format = 33777;
const RGBA_S3TC_DXT3_Format = 33778;
const RGBA_S3TC_DXT5_Format = 33779;
const RGB_PVRTC_4BPPV1_Format = 35840;
const RGB_PVRTC_2BPPV1_Format = 35841;
const RGBA_PVRTC_4BPPV1_Format = 35842;
const RGBA_PVRTC_2BPPV1_Format = 35843;
const RGB_ETC1_Format = 36196;
const RGB_ETC2_Format = 37492;
const RGBA_ETC2_EAC_Format = 37496;
const RGBA_ASTC_4x4_Format = 37808;
const RGBA_ASTC_5x4_Format = 37809;
const RGBA_ASTC_5x5_Format = 37810;
const RGBA_ASTC_6x5_Format = 37811;
const RGBA_ASTC_6x6_Format = 37812;
const RGBA_ASTC_8x5_Format = 37813;
const RGBA_ASTC_8x6_Format = 37814;
const RGBA_ASTC_8x8_Format = 37815;
const RGBA_ASTC_10x5_Format = 37816;
const RGBA_ASTC_10x6_Format = 37817;
const RGBA_ASTC_10x8_Format = 37818;
const RGBA_ASTC_10x10_Format = 37819;
const RGBA_ASTC_12x10_Format = 37820;
const RGBA_ASTC_12x12_Format = 37821;
const RGBA_BPTC_Format = 36492;
const RED_RGTC1_Format = 36283;
const SIGNED_RED_RGTC1_Format = 36284;
const RED_GREEN_RGTC2_Format = 36285;
const SIGNED_RED_GREEN_RGTC2_Format = 36286;
const LoopOnce = 2200;
const LoopRepeat = 2201;
const LoopPingPong = 2202;
const InterpolateDiscrete = 2300;
const InterpolateLinear = 2301;
const InterpolateSmooth = 2302;
const ZeroCurvatureEnding = 2400;
const ZeroSlopeEnding = 2401;
const WrapAroundEnding = 2402;
const NormalAnimationBlendMode = 2500;
const AdditiveAnimationBlendMode = 2501;
const TrianglesDrawMode = 0;
const TriangleStripDrawMode = 1;
const TriangleFanDrawMode = 2;
const LinearEncoding = 3000;
const sRGBEncoding = 3001;
const BasicDepthPacking = 3200;
const RGBADepthPacking = 3201;
const TangentSpaceNormalMap = 0;
const ObjectSpaceNormalMap = 1;

// Color space string identifiers, matching CSS Color Module Level 4 and WebGPU names where available.
const NoColorSpace = '';
const SRGBColorSpace = 'srgb';
const LinearSRGBColorSpace = 'srgb-linear';
const DisplayP3ColorSpace = 'display-p3';

const ZeroStencilOp = 0;
const KeepStencilOp = 7680;
const ReplaceStencilOp = 7681;
const IncrementStencilOp = 7682;
const DecrementStencilOp = 7683;
const IncrementWrapStencilOp = 34055;
const DecrementWrapStencilOp = 34056;
const InvertStencilOp = 5386;

const NeverStencilFunc = 512;
const LessStencilFunc = 513;
const EqualStencilFunc = 514;
const LessEqualStencilFunc = 515;
const GreaterStencilFunc = 516;
const NotEqualStencilFunc = 517;
const GreaterEqualStencilFunc = 518;
const AlwaysStencilFunc = 519;

const StaticDrawUsage = 35044;
const DynamicDrawUsage = 35048;
const StreamDrawUsage = 35040;
const StaticReadUsage = 35045;
const DynamicReadUsage = 35049;
const StreamReadUsage = 35041;
const StaticCopyUsage = 35046;
const DynamicCopyUsage = 35050;
const StreamCopyUsage = 35042;

const GLSL1 = '100';
const GLSL3 = '300 es';

const _SRGBAFormat = 1035; // fallback for WebGL 1

/**
 * https://github.com/mrdoob/eventdispatcher.js/
 */

class EventDispatcher {

addEventListener( type, listener ) {

if ( this._listeners === undefined ) this._listeners = {};

const listeners = this._listeners;

if ( listeners[ type ] === undefined ) {

listeners[ type ] = [];

}

if ( listeners[ type ].indexOf( listener ) === - 1 ) {

listeners[ type ].push( listener );

}

hasEventListener( type, listener ) {

if ( this._listeners === undefined ) return false;

const listeners = this._listeners;

return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;

}

removeEventListener( type, listener ) {

if ( this._listeners === undefined ) return;

const listeners = this._listeners;
		const listenerArray = listeners[ type ];

if ( listenerArray !== undefined ) {

const index = listenerArray.indexOf( listener );

if ( index !== - 1 ) {

listenerArray.splice( index, 1 );

}

dispatchEvent( event ) {

if ( this._listeners === undefined ) return;

const listeners = this._listeners;
		const listenerArray = listeners[ event.type ];

if ( listenerArray !== undefined ) {

event.target = this;

// Make a copy, in case listeners are removed while iterating.
			const array = listenerArray.slice( 0 );

for ( let i = 0, l = array.length; i < l; i ++ ) {

array[ i ].call( this, event );

}

event.target = null;

}

const _lut = [ '00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '0a', '0b', '0c', '0d', '0e', '0f', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '1a', '1b', '1c', '1d', '1e', '1f', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '2a', '2b', '2c', '2d', '2e', '2f', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '3a', '3b', '3c', '3d', '3e', '3f', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '4a', '4b', '4c', '4d', '4e', '4f', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '5a', '5b', '5c', '5d', '5e', '5f', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '6a', '6b', '6c', '6d', '6e', '6f', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '7a', '7b', '7c', '7d', '7e', '7f', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '8a', '8b', '8c', '8d', '8e', '8f', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '9a', '9b', '9c', '9d', '9e', '9f', 'a0', 'a1', 'a2', 'a3', 'a4', 'a5', 'a6', 'a7', 'a8', 'a9', 'aa', 'ab', 'ac', 'ad', 'ae', 'af', 'b0', 'b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b9', 'ba', 'bb', 'bc', 'bd', 'be', 'bf', 'c0', 'c1', 'c2', 'c3', 'c4', 'c5', 'c6', 'c7', 'c8', 'c9', 'ca', 'cb', 'cc', 'cd', 'ce', 'cf', 'd0', 'd1', 'd2', 'd3', 'd4', 'd5', 'd6', 'd7', 'd8', 'd9', 'da', 'db', 'dc', 'dd', 'de', 'df', 'e0', 'e1', 'e2', 'e3', 'e4', 'e5', 'e6', 'e7', 'e8', 'e9', 'ea', 'eb', 'ec', 'ed', 'ee', 'ef', 'f0', 'f1', 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'fa', 'fb', 'fc', 'fd', 'fe', 'ff' ];

let _seed = 1234567;

const DEG2RAD = Math.PI / 180;
const RAD2DEG = 180 / Math.PI;

// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
function generateUUID() {

const d0 = Math.random() * 0xffffffff | 0;
	const d1 = Math.random() * 0xffffffff | 0;
	const d2 = Math.random() * 0xffffffff | 0;
	const d3 = Math.random() * 0xffffffff | 0;
	const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];

// .toLowerCase() here flattens concatenated strings to save heap memory space.
	return uuid.toLowerCase();

}

function clamp( value, min, max ) {

return Math.max( min, Math.min( max, value ) );

}

// compute euclidean modulo of m % n
// https://en.wikipedia.org/wiki/Modulo_operation
function euclideanModulo( n, m ) {

return ( ( n % m ) + m ) % m;

}

// Linear mapping from range <a1, a2> to range <b1, b2>
function mapLinear( x, a1, a2, b1, b2 ) {

return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );

}

// https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/
function inverseLerp( x, y, value ) {

if ( x !== y ) {

return ( value - x ) / ( y - x );

} else {

return 0;

}

// https://en.wikipedia.org/wiki/Linear_interpolation
function lerp( x, y, t ) {

return ( 1 - t ) * x + t * y;

}

// http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
function damp( x, y, lambda, dt ) {

return lerp( x, y, 1 - Math.exp( - lambda * dt ) );

}

// https://www.desmos.com/calculator/vcsjnyz7x4
function pingpong( x, length = 1 ) {

return length - Math.abs( euclideanModulo( x, length * 2 ) - length );

}

// http://en.wikipedia.org/wiki/Smoothstep
function smoothstep( x, min, max ) {

if ( x <= min ) return 0;
	if ( x >= max ) return 1;

x = ( x - min ) / ( max - min );

return x * x * ( 3 - 2 * x );

}

function smootherstep( x, min, max ) {

if ( x <= min ) return 0;
	if ( x >= max ) return 1;

x = ( x - min ) / ( max - min );

return x * x * x * ( x * ( x * 6 - 15 ) + 10 );

}

// Random integer from <low, high> interval
function randInt( low, high ) {

return low + Math.floor( Math.random() * ( high - low + 1 ) );

}

// Random float from <low, high> interval
function randFloat( low, high ) {

return low + Math.random() * ( high - low );

}

// Random float from <-range/2, range/2> interval
function randFloatSpread( range ) {

return range * ( 0.5 - Math.random() );

}

// Deterministic pseudo-random float in the interval [ 0, 1 ]
function seededRandom( s ) {

if ( s !== undefined ) _seed = s;

// Mulberry32 generator

let t = _seed += 0x6D2B79F5;

t = Math.imul( t ^ t >>> 15, t | 1 );

t ^= t + Math.imul( t ^ t >>> 7, t | 61 );

return ( ( t ^ t >>> 14 ) >>> 0 ) / 4294967296;

}

function degToRad( degrees ) {

return degrees * DEG2RAD;

}

function radToDeg( radians ) {

return radians * RAD2DEG;

}

function isPowerOfTwo( value ) {

return ( value & ( value - 1 ) ) === 0 && value !== 0;

}

function ceilPowerOfTwo( value ) {

return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );

}

function floorPowerOfTwo( value ) {

return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );

}

function setQuaternionFromProperEuler( q, a, b, c, order ) {

// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles

// rotations are applied to the axes in the order specified by 'order'
	// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
	// angles are in radians

const cos = Math.cos;
	const sin = Math.sin;

const c2 = cos( b / 2 );
	const s2 = sin( b / 2 );

const c13 = cos( ( a + c ) / 2 );
	const s13 = sin( ( a + c ) / 2 );

const c1_3 = cos( ( a - c ) / 2 );
	const s1_3 = sin( ( a - c ) / 2 );

const c3_1 = cos( ( c - a ) / 2 );
	const s3_1 = sin( ( c - a ) / 2 );

switch ( order ) {

case 'XYX':
			q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
			break;

case 'YZY':
			q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
			break;

case 'ZXZ':
			q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
			break;

case 'XZX':
			q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
			break;

case 'YXY':
			q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
			break;

case 'ZYZ':
			q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
			break;

default:
			console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );

}

function denormalize( value, array ) {

switch ( array.constructor ) {

case Float32Array:

return value;

case Uint16Array:

return value / 65535.0;

case Uint8Array:

return value / 255.0;

case Int16Array:

return Math.max( value / 32767.0, - 1.0 );

case Int8Array:

return Math.max( value / 127.0, - 1.0 );

default:

throw new Error( 'Invalid component type.' );

}

function normalize( value, array ) {

switch ( array.constructor ) {

case Float32Array:

return value;

case Uint16Array:

return Math.round( value * 65535.0 );

case Uint8Array:

return Math.round( value * 255.0 );

case Int16Array:

return Math.round( value * 32767.0 );

case Int8Array:

return Math.round( value * 127.0 );

default:

throw new Error( 'Invalid component type.' );

}

const MathUtils = {
	DEG2RAD: DEG2RAD,
	RAD2DEG: RAD2DEG,
	generateUUID: generateUUID,
	clamp: clamp,
	euclideanModulo: euclideanModulo,
	mapLinear: mapLinear,
	inverseLerp: inverseLerp,
	lerp: lerp,
	damp: damp,
	pingpong: pingpong,
	smoothstep: smoothstep,
	smootherstep: smootherstep,
	randInt: randInt,
	randFloat: randFloat,
	randFloatSpread: randFloatSpread,
	seededRandom: seededRandom,
	degToRad: degToRad,
	radToDeg: radToDeg,
	isPowerOfTwo: isPowerOfTwo,
	ceilPowerOfTwo: ceilPowerOfTwo,
	floorPowerOfTwo: floorPowerOfTwo,
	setQuaternionFromProperEuler: setQuaternionFromProperEuler,
	normalize: normalize,
	denormalize: denormalize
};

class Vector2 {

constructor( x = 0, y = 0 ) {

Vector2.prototype.isVector2 = true;

this.x = x;
		this.y = y;

}

get width() {

return this.x;

}

set width( value ) {

this.x = value;

}

get height() {

return this.y;

}

set height( value ) {

this.y = value;

}

set( x, y ) {

this.x = x;
		this.y = y;

return this;

}

setScalar( scalar ) {

this.x = scalar;
		this.y = scalar;

return this;

}

setX( x ) {

this.x = x;

return this;

}

setY( y ) {

this.y = y;

return this;

}

setComponent( index, value ) {

switch ( index ) {

case 0: this.x = value; break;
			case 1: this.y = value; break;
			default: throw new Error( 'index is out of range: ' + index );

}

return this;

}

getComponent( index ) {

switch ( index ) {

case 0: return this.x;
			case 1: return this.y;
			default: throw new Error( 'index is out of range: ' + index );

}

clone() {

return new this.constructor( this.x, this.y );

}

copy( v ) {

this.x = v.x;
		this.y = v.y;

return this;

}

add( v ) {

this.x += v.x;
		this.y += v.y;

return this;

}

addScalar( s ) {

this.x += s;
		this.y += s;

return this;

}

addVectors( a, b ) {

this.x = a.x + b.x;
		this.y = a.y + b.y;

return this;

}

addScaledVector( v, s ) {

this.x += v.x * s;
		this.y += v.y * s;

return this;

}

sub( v ) {

this.x -= v.x;
		this.y -= v.y;

return this;

}

subScalar( s ) {

this.x -= s;
		this.y -= s;

return this;

}

subVectors( a, b ) {

this.x = a.x - b.x;
		this.y = a.y - b.y;

return this;

}

multiply( v ) {

this.x *= v.x;
		this.y *= v.y;

return this;

}

multiplyScalar( scalar ) {

this.x *= scalar;
		this.y *= scalar;

return this;

}

divide( v ) {

this.x /= v.x;
		this.y /= v.y;

return this;

}

divideScalar( scalar ) {

return this.multiplyScalar( 1 / scalar );

}

applyMatrix3( m ) {

const x = this.x, y = this.y;
		const e = m.elements;

this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];

return this;

}

min( v ) {

this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );

return this;

}

max( v ) {

this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );

return this;

}

clamp( min, max ) {

// assumes min < max, componentwise

this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );

return this;

}

clampScalar( minVal, maxVal ) {

this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );

return this;

}

clampLength( min, max ) {

const length = this.length();

return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

}

floor() {

this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );

return this;

}

ceil() {

this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );

return this;

}

round() {

this.x = Math.round( this.x );
		this.y = Math.round( this.y );

return this;

}

roundToZero() {

this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );

return this;

}

negate() {

this.x = - this.x;
		this.y = - this.y;

return this;

}

dot( v ) {

return this.x * v.x + this.y * v.y;

}

cross( v ) {

return this.x * v.y - this.y * v.x;

}

lengthSq() {

return this.x * this.x + this.y * this.y;

}

length() {

return Math.sqrt( this.x * this.x + this.y * this.y );

}

manhattanLength() {

return Math.abs( this.x ) + Math.abs( this.y );

}

normalize() {

return this.divideScalar( this.length() || 1 );

}

angle() {

// computes the angle in radians with respect to the positive x-axis

const angle = Math.atan2( - this.y, - this.x ) + Math.PI;

return angle;

}

angleTo( v ) {

const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );

if ( denominator === 0 ) return Math.PI / 2;

const theta = this.dot( v ) / denominator;

// clamp, to handle numerical problems

return Math.acos( clamp( theta, - 1, 1 ) );

}

distanceTo( v ) {

return Math.sqrt( this.distanceToSquared( v ) );

}

distanceToSquared( v ) {

const dx = this.x - v.x, dy = this.y - v.y;
		return dx * dx + dy * dy;

}

manhattanDistanceTo( v ) {

return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );

}

setLength( length ) {

return this.normalize().multiplyScalar( length );

}

lerp( v, alpha ) {

this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;

return this;

}

lerpVectors( v1, v2, alpha ) {

this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;

return this;

}

equals( v ) {

return ( ( v.x === this.x ) && ( v.y === this.y ) );

}

fromArray( array, offset = 0 ) {

this.x = array[ offset ];
		this.y = array[ offset + 1 ];

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;

return array;

}

fromBufferAttribute( attribute, index ) {

this.x = attribute.getX( index );
		this.y = attribute.getY( index );

return this;

}

rotateAround( center, angle ) {

const c = Math.cos( angle ), s = Math.sin( angle );

const x = this.x - center.x;
		const y = this.y - center.y;

this.x = x * c - y * s + center.x;
		this.y = x * s + y * c + center.y;

return this;

}

random() {

this.x = Math.random();
		this.y = Math.random();

return this;

}

*[ Symbol.iterator ]() {

yield this.x;
		yield this.y;

}

class Matrix3 {

constructor() {

Matrix3.prototype.isMatrix3 = true;

this.elements = [

1, 0, 0,
			0, 1, 0,
			0, 0, 1

];

}

set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

const te = this.elements;

te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;

return this;

}

identity() {

this.set(

1, 0, 0,
			0, 1, 0,
			0, 0, 1

);

return this;

}

copy( m ) {

const te = this.elements;
		const me = m.elements;

te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];

return this;

}

extractBasis( xAxis, yAxis, zAxis ) {

xAxis.setFromMatrix3Column( this, 0 );
		yAxis.setFromMatrix3Column( this, 1 );
		zAxis.setFromMatrix3Column( this, 2 );

return this;

}

setFromMatrix4( m ) {

const me = m.elements;

this.set(

me[ 0 ], me[ 4 ], me[ 8 ],
			me[ 1 ], me[ 5 ], me[ 9 ],
			me[ 2 ], me[ 6 ], me[ 10 ]

);

return this;

}

multiply( m ) {

return this.multiplyMatrices( this, m );

}

premultiply( m ) {

return this.multiplyMatrices( m, this );

}

multiplyMatrices( a, b ) {

const ae = a.elements;
		const be = b.elements;
		const te = this.elements;

const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];

const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];

te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;

te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;

te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;

return this;

}

multiplyScalar( s ) {

const te = this.elements;

te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;

return this;

}

determinant() {

const te = this.elements;

const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];

return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;

}

invert() {

const te = this.elements,

n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],
			n12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],
			n13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],

t11 = n33 * n22 - n32 * n23,
			t12 = n32 * n13 - n33 * n12,
			t13 = n23 * n12 - n22 * n13,

det = n11 * t11 + n21 * t12 + n31 * t13;

if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );

const detInv = 1 / det;

te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;

te[ 3 ] = t12 * detInv;
		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;

te[ 6 ] = t13 * detInv;
		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;

return this;

}

transpose() {

let tmp;
		const m = this.elements;

tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;

return this;

}

getNormalMatrix( matrix4 ) {

return this.setFromMatrix4( matrix4 ).invert().transpose();

}

transposeIntoArray( r ) {

const m = this.elements;

r[ 0 ] = m[ 0 ];
		r[ 1 ] = m[ 3 ];
		r[ 2 ] = m[ 6 ];
		r[ 3 ] = m[ 1 ];
		r[ 4 ] = m[ 4 ];
		r[ 5 ] = m[ 7 ];
		r[ 6 ] = m[ 2 ];
		r[ 7 ] = m[ 5 ];
		r[ 8 ] = m[ 8 ];

return this;

}

setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {

const c = Math.cos( rotation );
		const s = Math.sin( rotation );

this.set(
			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
			0, 0, 1
		);

return this;

}

scale( sx, sy ) {

this.premultiply( _m3.makeScale( sx, sy ) );

return this;

}

rotate( theta ) {

this.premultiply( _m3.makeRotation( - theta ) );

return this;

}

translate( tx, ty ) {

this.premultiply( _m3.makeTranslation( tx, ty ) );

return this;

}

// for 2D Transforms

makeTranslation( x, y ) {

this.set(

1, 0, x,
			0, 1, y,
			0, 0, 1

);

return this;

}

makeRotation( theta ) {

// counterclockwise

const c = Math.cos( theta );
		const s = Math.sin( theta );

this.set(

c, - s, 0,
			s, c, 0,
			0, 0, 1

);

return this;

}

makeScale( x, y ) {

this.set(

x, 0, 0,
			0, y, 0,
			0, 0, 1

);

return this;

}

equals( matrix ) {

const te = this.elements;
		const me = matrix.elements;

for ( let i = 0; i < 9; i ++ ) {

if ( te[ i ] !== me[ i ] ) return false;

}

return true;

}

fromArray( array, offset = 0 ) {

for ( let i = 0; i < 9; i ++ ) {

this.elements[ i ] = array[ i + offset ];

}

return this;

}

toArray( array = [], offset = 0 ) {

const te = this.elements;

array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];

array[ offset + 3 ] = te[ 3 ];
		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];

array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];
		array[ offset + 8 ] = te[ 8 ];

return array;

}

clone() {

return new this.constructor().fromArray( this.elements );

}

const _m3 = /*@__PURE__*/ new Matrix3();

function arrayNeedsUint32( array ) {

// assumes larger values usually on last

for ( let i = array.length - 1; i >= 0; -- i ) {

if ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565

}

return false;

}

const TYPED_ARRAYS = {
	Int8Array: Int8Array,
	Uint8Array: Uint8Array,
	Uint8ClampedArray: Uint8ClampedArray,
	Int16Array: Int16Array,
	Uint16Array: Uint16Array,
	Int32Array: Int32Array,
	Uint32Array: Uint32Array,
	Float32Array: Float32Array,
	Float64Array: Float64Array
};

function getTypedArray( type, buffer ) {

return new TYPED_ARRAYS[ type ]( buffer );

}

function createElementNS( name ) {

return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );

}

function SRGBToLinear( c ) {

return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );

}

function LinearToSRGB( c ) {

return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;

}

/**
 * Matrices converting P3 <-> Rec. 709 primaries, without gamut mapping
 * or clipping. Based on W3C specifications for sRGB and Display P3,
 * and ICC specifications for the D50 connection space. Values in/out
 * are _linear_ sRGB and _linear_ Display P3.
 *
 * Note that both sRGB and Display P3 use the sRGB transfer functions.
 *
 * Reference:
 * - http://www.russellcottrell.com/photo/matrixCalculator.htm
 */

const LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = /*@__PURE__*/ new Matrix3().fromArray( [
	0.8224621, 0.0331941, 0.0170827,
	0.1775380, 0.9668058, 0.0723974,
	- 0.0000001, 0.0000001, 0.9105199
] );

const LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = /*@__PURE__*/ new Matrix3().fromArray( [
	1.2249401, - 0.0420569, - 0.0196376,
	- 0.2249404, 1.0420571, - 0.0786361,
	0.0000001, 0.0000000, 1.0982735
] );

function DisplayP3ToLinearSRGB( color ) {

// Display P3 uses the sRGB transfer functions
	return color.convertSRGBToLinear().applyMatrix3( LINEAR_DISPLAY_P3_TO_LINEAR_SRGB );

}

function LinearSRGBToDisplayP3( color ) {

// Display P3 uses the sRGB transfer functions
	return color.applyMatrix3( LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 ).convertLinearToSRGB();

}

// Conversions from <source> to Linear-sRGB reference space.
const TO_LINEAR = {
	[ LinearSRGBColorSpace ]: ( color ) => color,
	[ SRGBColorSpace ]: ( color ) => color.convertSRGBToLinear(),
	[ DisplayP3ColorSpace ]: DisplayP3ToLinearSRGB,
};

// Conversions to <target> from Linear-sRGB reference space.
const FROM_LINEAR = {
	[ LinearSRGBColorSpace ]: ( color ) => color,
	[ SRGBColorSpace ]: ( color ) => color.convertLinearToSRGB(),
	[ DisplayP3ColorSpace ]: LinearSRGBToDisplayP3,
};

const ColorManagement = {

enabled: false,

get legacyMode() {

console.warn( 'THREE.ColorManagement: .legacyMode=false renamed to .enabled=true in r150.' );

return ! this.enabled;

set legacyMode( legacyMode ) {

console.warn( 'THREE.ColorManagement: .legacyMode=false renamed to .enabled=true in r150.' );

this.enabled = ! legacyMode;

get workingColorSpace() {

return LinearSRGBColorSpace;

set workingColorSpace( colorSpace ) {

console.warn( 'THREE.ColorManagement: .workingColorSpace is readonly.' );

convert: function ( color, sourceColorSpace, targetColorSpace ) {

if ( this.enabled === false || sourceColorSpace === targetColorSpace || ! sourceColorSpace || ! targetColorSpace ) {

return color;

}

const sourceToLinear = TO_LINEAR[ sourceColorSpace ];
		const targetFromLinear = FROM_LINEAR[ targetColorSpace ];

if ( sourceToLinear === undefined || targetFromLinear === undefined ) {

throw new Error( `Unsupported color space conversion, "${ sourceColorSpace }" to "${ targetColorSpace }".` );

}

return targetFromLinear( sourceToLinear( color ) );

fromWorkingColorSpace: function ( color, targetColorSpace ) {

return this.convert( color, this.workingColorSpace, targetColorSpace );

toWorkingColorSpace: function ( color, sourceColorSpace ) {

return this.convert( color, sourceColorSpace, this.workingColorSpace );

};

let _canvas;

class ImageUtils {

static getDataURL( image ) {

if ( /^data:/i.test( image.src ) ) {

return image.src;

}

if ( typeof HTMLCanvasElement === 'undefined' ) {

return image.src;

}

let canvas;

if ( image instanceof HTMLCanvasElement ) {

canvas = image;

} else {

if ( _canvas === undefined ) _canvas = createElementNS( 'canvas' );

_canvas.width = image.width;
			_canvas.height = image.height;

const context = _canvas.getContext( '2d' );

if ( image instanceof ImageData ) {

context.putImageData( image, 0, 0 );

} else {

context.drawImage( image, 0, 0, image.width, image.height );

}

canvas = _canvas;

}

if ( canvas.width > 2048 || canvas.height > 2048 ) {

console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );

return canvas.toDataURL( 'image/jpeg', 0.6 );

} else {

return canvas.toDataURL( 'image/png' );

}

static sRGBToLinear( image ) {

if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
			( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
			( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

const canvas = createElementNS( 'canvas' );

canvas.width = image.width;
			canvas.height = image.height;

const context = canvas.getContext( '2d' );
			context.drawImage( image, 0, 0, image.width, image.height );

const imageData = context.getImageData( 0, 0, image.width, image.height );
			const data = imageData.data;

for ( let i = 0; i < data.length; i ++ ) {

data[ i ] = SRGBToLinear( data[ i ] / 255 ) * 255;

}

context.putImageData( imageData, 0, 0 );

return canvas;

} else if ( image.data ) {

const data = image.data.slice( 0 );

for ( let i = 0; i < data.length; i ++ ) {

if ( data instanceof Uint8Array || data instanceof Uint8ClampedArray ) {

data[ i ] = Math.floor( SRGBToLinear( data[ i ] / 255 ) * 255 );

} else {

// assuming float

data[ i ] = SRGBToLinear( data[ i ] );

}

return {
				data: data,
				width: image.width,
				height: image.height
			};

} else {

console.warn( 'THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.' );
			return image;

}

class Source {

constructor( data = null ) {

this.isSource = true;

this.uuid = generateUUID();

this.data = data;

this.version = 0;

}

set needsUpdate( value ) {

if ( value === true ) this.version ++;

}

toJSON( meta ) {

const isRootObject = ( meta === undefined || typeof meta === 'string' );

if ( ! isRootObject && meta.images[ this.uuid ] !== undefined ) {

return meta.images[ this.uuid ];

}

const output = {
			uuid: this.uuid,
			url: ''
		};

const data = this.data;

if ( data !== null ) {

let url;

if ( Array.isArray( data ) ) {

// cube texture

url = [];

for ( let i = 0, l = data.length; i < l; i ++ ) {

if ( data[ i ].isDataTexture ) {

url.push( serializeImage( data[ i ].image ) );

} else {

url.push( serializeImage( data[ i ] ) );

}

} else {

// texture

url = serializeImage( data );

}

output.url = url;

}

if ( ! isRootObject ) {

meta.images[ this.uuid ] = output;

}

return output;

}

function serializeImage( image ) {

if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
		( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
		( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

// default images

return ImageUtils.getDataURL( image );

} else {

if ( image.data ) {

// images of DataTexture

return {
				data: Array.from( image.data ),
				width: image.width,
				height: image.height,
				type: image.data.constructor.name
			};

} else {

console.warn( 'THREE.Texture: Unable to serialize Texture.' );
			return {};

}

let textureId = 0;

class Texture extends EventDispatcher {

constructor( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = Texture.DEFAULT_ANISOTROPY, encoding = LinearEncoding ) {

super();

this.isTexture = true;

Object.defineProperty( this, 'id', { value: textureId ++ } );

this.uuid = generateUUID();

this.name = '';

this.source = new Source( image );
		this.mipmaps = [];

this.mapping = mapping;
		this.channel = 0;

this.wrapS = wrapS;
		this.wrapT = wrapT;

this.magFilter = magFilter;
		this.minFilter = minFilter;

this.anisotropy = anisotropy;

this.format = format;
		this.internalFormat = null;
		this.type = type;

this.offset = new Vector2( 0, 0 );
		this.repeat = new Vector2( 1, 1 );
		this.center = new Vector2( 0, 0 );
		this.rotation = 0;

this.matrixAutoUpdate = true;
		this.matrix = new Matrix3();

this.generateMipmaps = true;
		this.premultiplyAlpha = false;
		this.flipY = true;
		this.unpackAlignment = 4;	// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
		//
		// Also changing the encoding after already used by a Material will not automatically make the Material
		// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
		this.encoding = encoding;

this.userData = {};

this.version = 0;
		this.onUpdate = null;

this.isRenderTargetTexture = false; // indicates whether a texture belongs to a render target or not
		this.needsPMREMUpdate = false; // indicates whether this texture should be processed by PMREMGenerator or not (only relevant for render target textures)

}

get image() {

return this.source.data;

}

set image( value = null ) {

this.source.data = value;

}

updateMatrix() {

this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );

}

clone() {

return new this.constructor().copy( this );

}

copy( source ) {

this.name = source.name;

this.source = source.source;
		this.mipmaps = source.mipmaps.slice( 0 );

this.mapping = source.mapping;
		this.channel = source.channel;

this.wrapS = source.wrapS;
		this.wrapT = source.wrapT;

this.magFilter = source.magFilter;
		this.minFilter = source.minFilter;

this.anisotropy = source.anisotropy;

this.format = source.format;
		this.internalFormat = source.internalFormat;
		this.type = source.type;

this.offset.copy( source.offset );
		this.repeat.copy( source.repeat );
		this.center.copy( source.center );
		this.rotation = source.rotation;

this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrix.copy( source.matrix );

this.generateMipmaps = source.generateMipmaps;
		this.premultiplyAlpha = source.premultiplyAlpha;
		this.flipY = source.flipY;
		this.unpackAlignment = source.unpackAlignment;
		this.encoding = source.encoding;

this.userData = JSON.parse( JSON.stringify( source.userData ) );

this.needsUpdate = true;

return this;

}

toJSON( meta ) {

const isRootObject = ( meta === undefined || typeof meta === 'string' );

if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {

return meta.textures[ this.uuid ];

}

const output = {

metadata: {
				version: 4.5,
				type: 'Texture',
				generator: 'Texture.toJSON'
			},

uuid: this.uuid,
			name: this.name,

image: this.source.toJSON( meta ).uuid,

mapping: this.mapping,
			channel: this.channel,

repeat: [ this.repeat.x, this.repeat.y ],
			offset: [ this.offset.x, this.offset.y ],
			center: [ this.center.x, this.center.y ],
			rotation: this.rotation,

wrap: [ this.wrapS, this.wrapT ],

format: this.format,
			internalFormat: this.internalFormat,
			type: this.type,
			encoding: this.encoding,

minFilter: this.minFilter,
			magFilter: this.magFilter,
			anisotropy: this.anisotropy,

flipY: this.flipY,

generateMipmaps: this.generateMipmaps,
			premultiplyAlpha: this.premultiplyAlpha,
			unpackAlignment: this.unpackAlignment

};

if ( Object.keys( this.userData ).length > 0 ) output.userData = this.userData;

if ( ! isRootObject ) {

meta.textures[ this.uuid ] = output;

}

return output;

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

}

transformUv( uv ) {

if ( this.mapping !== UVMapping ) return uv;

uv.applyMatrix3( this.matrix );

if ( uv.x < 0 || uv.x > 1 ) {

switch ( this.wrapS ) {

case RepeatWrapping:

uv.x = uv.x - Math.floor( uv.x );
					break;

case ClampToEdgeWrapping:

uv.x = uv.x < 0 ? 0 : 1;
					break;

case MirroredRepeatWrapping:

if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {

uv.x = Math.ceil( uv.x ) - uv.x;

} else {

uv.x = uv.x - Math.floor( uv.x );

}

break;

}

if ( uv.y < 0 || uv.y > 1 ) {

switch ( this.wrapT ) {

case RepeatWrapping:

uv.y = uv.y - Math.floor( uv.y );
					break;

case ClampToEdgeWrapping:

uv.y = uv.y < 0 ? 0 : 1;
					break;

case MirroredRepeatWrapping:

if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {

uv.y = Math.ceil( uv.y ) - uv.y;

} else {

uv.y = uv.y - Math.floor( uv.y );

}

break;

}

if ( this.flipY ) {

uv.y = 1 - uv.y;

}

return uv;

}

set needsUpdate( value ) {

if ( value === true ) {

this.version ++;
			this.source.needsUpdate = true;

}

Texture.DEFAULT_IMAGE = null;
Texture.DEFAULT_MAPPING = UVMapping;
Texture.DEFAULT_ANISOTROPY = 1;

class Vector4 {

constructor( x = 0, y = 0, z = 0, w = 1 ) {

Vector4.prototype.isVector4 = true;

this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;

}

get width() {

return this.z;

}

set width( value ) {

this.z = value;

}

get height() {

return this.w;

}

set height( value ) {

this.w = value;

}

set( x, y, z, w ) {

this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;

return this;

}

setScalar( scalar ) {

this.x = scalar;
		this.y = scalar;
		this.z = scalar;
		this.w = scalar;

return this;

}

setX( x ) {

this.x = x;

return this;

}

setY( y ) {

this.y = y;

return this;

}

setZ( z ) {

this.z = z;

return this;

}

setW( w ) {

this.w = w;

return this;

}

setComponent( index, value ) {

switch ( index ) {

case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			case 3: this.w = value; break;
			default: throw new Error( 'index is out of range: ' + index );

}

return this;

}

getComponent( index ) {

switch ( index ) {

case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			case 3: return this.w;
			default: throw new Error( 'index is out of range: ' + index );

}

clone() {

return new this.constructor( this.x, this.y, this.z, this.w );

}

copy( v ) {

this.x = v.x;
		this.y = v.y;
		this.z = v.z;
		this.w = ( v.w !== undefined ) ? v.w : 1;

return this;

}

add( v ) {

this.x += v.x;
		this.y += v.y;
		this.z += v.z;
		this.w += v.w;

return this;

}

addScalar( s ) {

this.x += s;
		this.y += s;
		this.z += s;
		this.w += s;

return this;

}

addVectors( a, b ) {

this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;
		this.w = a.w + b.w;

return this;

}

addScaledVector( v, s ) {

this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;
		this.w += v.w * s;

return this;

}

sub( v ) {

this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;
		this.w -= v.w;

return this;

}

subScalar( s ) {

this.x -= s;
		this.y -= s;
		this.z -= s;
		this.w -= s;

return this;

}

subVectors( a, b ) {

this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;
		this.w = a.w - b.w;

return this;

}

multiply( v ) {

this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;
		this.w *= v.w;

return this;

}

multiplyScalar( scalar ) {

this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;
		this.w *= scalar;

return this;

}

applyMatrix4( m ) {

const x = this.x, y = this.y, z = this.z, w = this.w;
		const e = m.elements;

this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;

return this;

}

divideScalar( scalar ) {

return this.multiplyScalar( 1 / scalar );

}

setAxisAngleFromQuaternion( q ) {

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm

// q is assumed to be normalized

this.w = 2 * Math.acos( q.w );

const s = Math.sqrt( 1 - q.w * q.w );

if ( s < 0.0001 ) {

this.x = 1;
			this.y = 0;
			this.z = 0;

} else {

this.x = q.x / s;
			this.y = q.y / s;
			this.z = q.z / s;

}

return this;

}

setAxisAngleFromRotationMatrix( m ) {

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm

// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

let angle, x, y, z; // variables for result
		const epsilon = 0.01,		// margin to allow for rounding errors
			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees

te = m.elements,

m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
		     ( Math.abs( m13 - m31 ) < epsilon ) &&
		     ( Math.abs( m23 - m32 ) < epsilon ) ) {

// singularity found
			// first check for identity matrix which must have +1 for all terms
			// in leading diagonal and zero in other terms

if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {

// this singularity is identity matrix so angle = 0

this.set( 1, 0, 0, 0 );

return this; // zero angle, arbitrary axis

}

// otherwise this singularity is angle = 180

angle = Math.PI;

const xx = ( m11 + 1 ) / 2;
			const yy = ( m22 + 1 ) / 2;
			const zz = ( m33 + 1 ) / 2;
			const xy = ( m12 + m21 ) / 4;
			const xz = ( m13 + m31 ) / 4;
			const yz = ( m23 + m32 ) / 4;

if ( ( xx > yy ) && ( xx > zz ) ) {

// m11 is the largest diagonal term

if ( xx < epsilon ) {

x = 0;
					y = 0.707106781;
					z = 0.707106781;

} else {

x = Math.sqrt( xx );
					y = xy / x;
					z = xz / x;

}

} else if ( yy > zz ) {

// m22 is the largest diagonal term

if ( yy < epsilon ) {

x = 0.707106781;
					y = 0;
					z = 0.707106781;

} else {

y = Math.sqrt( yy );
					x = xy / y;
					z = yz / y;

}

} else {

// m33 is the largest diagonal term so base result on this

if ( zz < epsilon ) {

x = 0.707106781;
					y = 0.707106781;
					z = 0;

} else {

z = Math.sqrt( zz );
					x = xz / z;
					y = yz / z;

}

this.set( x, y, z, angle );

return this; // return 180 deg rotation

}

// as we have reached here there are no singularities so we can handle normally

let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
			( m13 - m31 ) * ( m13 - m31 ) +
			( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize

if ( Math.abs( s ) < 0.001 ) s = 1;

// prevent divide by zero, should not happen if matrix is orthogonal and should be
		// caught by singularity test above, but I've left it in just in case

this.x = ( m32 - m23 ) / s;
		this.y = ( m13 - m31 ) / s;
		this.z = ( m21 - m12 ) / s;
		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );

return this;

}

min( v ) {

this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );
		this.w = Math.min( this.w, v.w );

return this;

}

max( v ) {

this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );
		this.w = Math.max( this.w, v.w );

return this;

}

clamp( min, max ) {

// assumes min < max, componentwise

this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
		this.w = Math.max( min.w, Math.min( max.w, this.w ) );

return this;

}

clampScalar( minVal, maxVal ) {

this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );

return this;

}

clampLength( min, max ) {

const length = this.length();

return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

}

floor() {

this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );
		this.w = Math.floor( this.w );

return this;

}

ceil() {

this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );
		this.w = Math.ceil( this.w );

return this;

}

round() {

this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );
		this.w = Math.round( this.w );

return this;

}

roundToZero() {

this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );

return this;

}

negate() {

this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;
		this.w = - this.w;

return this;

}

dot( v ) {

return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;

}

lengthSq() {

return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

}

length() {

return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

}

manhattanLength() {

return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );

}

normalize() {

return this.divideScalar( this.length() || 1 );

}

setLength( length ) {

return this.normalize().multiplyScalar( length );

}

lerp( v, alpha ) {

this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;
		this.w += ( v.w - this.w ) * alpha;

return this;

}

lerpVectors( v1, v2, alpha ) {

this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;
		this.w = v1.w + ( v2.w - v1.w ) * alpha;

return this;

}

equals( v ) {

return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

}

fromArray( array, offset = 0 ) {

this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];
		this.w = array[ offset + 3 ];

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;
		array[ offset + 3 ] = this.w;

return array;

}

fromBufferAttribute( attribute, index ) {

this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );
		this.w = attribute.getW( index );

return this;

}

random() {

this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();
		this.w = Math.random();

return this;

}

*[ Symbol.iterator ]() {

yield this.x;
		yield this.y;
		yield this.z;
		yield this.w;

}

/*
 In options, we can specify:
 * Texture parameters for an auto-generated target texture
 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
*/
class WebGLRenderTarget extends EventDispatcher {

constructor( width = 1, height = 1, options = {} ) {

super();

this.isWebGLRenderTarget = true;

this.width = width;
		this.height = height;
		this.depth = 1;

this.scissor = new Vector4( 0, 0, width, height );
		this.scissorTest = false;

this.viewport = new Vector4( 0, 0, width, height );

const image = { width: width, height: height, depth: 1 };

this.texture = new Texture( image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
		this.texture.isRenderTargetTexture = true;

this.texture.flipY = false;
		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
		this.texture.internalFormat = options.internalFormat !== undefined ? options.internalFormat : null;
		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
		this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;

this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;

this.samples = options.samples !== undefined ? options.samples : 0;

}

setSize( width, height, depth = 1 ) {

if ( this.width !== width || this.height !== height || this.depth !== depth ) {

this.width = width;
			this.height = height;
			this.depth = depth;

this.texture.image.width = width;
			this.texture.image.height = height;
			this.texture.image.depth = depth;

this.dispose();

}

this.viewport.set( 0, 0, width, height );
		this.scissor.set( 0, 0, width, height );

}

clone() {

return new this.constructor().copy( this );

}

copy( source ) {

this.width = source.width;
		this.height = source.height;
		this.depth = source.depth;

this.viewport.copy( source.viewport );

this.texture = source.texture.clone();
		this.texture.isRenderTargetTexture = true;

// ensure image object is not shared, see #20328

const image = Object.assign( {}, source.texture.image );
		this.texture.source = new Source( image );

this.depthBuffer = source.depthBuffer;
		this.stencilBuffer = source.stencilBuffer;

if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();

this.samples = source.samples;

return this;

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

}

class DataArrayTexture extends Texture {

constructor( data = null, width = 1, height = 1, depth = 1 ) {

super( null );

this.isDataArrayTexture = true;

this.image = { data, width, height, depth };

this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

this.wrapR = ClampToEdgeWrapping;

this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

}

class WebGLArrayRenderTarget extends WebGLRenderTarget {

constructor( width = 1, height = 1, depth = 1 ) {

super( width, height );

this.isWebGLArrayRenderTarget = true;

this.depth = depth;

this.texture = new DataArrayTexture( null, width, height, depth );

this.texture.isRenderTargetTexture = true;

}

class Data3DTexture extends Texture {

constructor( data = null, width = 1, height = 1, depth = 1 ) {

// We're going to add .setXXX() methods for setting properties later.
		// Users can still set in DataTexture3D directly.
		//
		//	const texture = new THREE.DataTexture3D( data, width, height, depth );
		// 	texture.anisotropy = 16;
		//
		// See #14839

super( null );

this.isData3DTexture = true;

this.image = { data, width, height, depth };

this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

this.wrapR = ClampToEdgeWrapping;

this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

}

class WebGL3DRenderTarget extends WebGLRenderTarget {

constructor( width = 1, height = 1, depth = 1 ) {

super( width, height );

this.isWebGL3DRenderTarget = true;

this.depth = depth;

this.texture = new Data3DTexture( null, width, height, depth );

this.texture.isRenderTargetTexture = true;

}

class WebGLMultipleRenderTargets extends WebGLRenderTarget {

constructor( width = 1, height = 1, count = 1, options = {} ) {

super( width, height, options );

this.isWebGLMultipleRenderTargets = true;

const texture = this.texture;

this.texture = [];

for ( let i = 0; i < count; i ++ ) {

this.texture[ i ] = texture.clone();
			this.texture[ i ].isRenderTargetTexture = true;

}

setSize( width, height, depth = 1 ) {

if ( this.width !== width || this.height !== height || this.depth !== depth ) {

this.width = width;
			this.height = height;
			this.depth = depth;

for ( let i = 0, il = this.texture.length; i < il; i ++ ) {

this.texture[ i ].image.width = width;
				this.texture[ i ].image.height = height;
				this.texture[ i ].image.depth = depth;

}

this.dispose();

}

this.viewport.set( 0, 0, width, height );
		this.scissor.set( 0, 0, width, height );

return this;

}

copy( source ) {

this.dispose();

this.width = source.width;
		this.height = source.height;
		this.depth = source.depth;

this.viewport.set( 0, 0, this.width, this.height );
		this.scissor.set( 0, 0, this.width, this.height );

this.depthBuffer = source.depthBuffer;
		this.stencilBuffer = source.stencilBuffer;

if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();

this.texture.length = 0;

for ( let i = 0, il = source.texture.length; i < il; i ++ ) {

this.texture[ i ] = source.texture[ i ].clone();
			this.texture[ i ].isRenderTargetTexture = true;

}

return this;

}

class Quaternion {

constructor( x = 0, y = 0, z = 0, w = 1 ) {

this.isQuaternion = true;

this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;

}

static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {

// fuzz-free, array-based Quaternion SLERP operation

let x0 = src0[ srcOffset0 + 0 ],
			y0 = src0[ srcOffset0 + 1 ],
			z0 = src0[ srcOffset0 + 2 ],
			w0 = src0[ srcOffset0 + 3 ];

const x1 = src1[ srcOffset1 + 0 ],
			y1 = src1[ srcOffset1 + 1 ],
			z1 = src1[ srcOffset1 + 2 ],
			w1 = src1[ srcOffset1 + 3 ];

if ( t === 0 ) {

dst[ dstOffset + 0 ] = x0;
			dst[ dstOffset + 1 ] = y0;
			dst[ dstOffset + 2 ] = z0;
			dst[ dstOffset + 3 ] = w0;
			return;

}

if ( t === 1 ) {

dst[ dstOffset + 0 ] = x1;
			dst[ dstOffset + 1 ] = y1;
			dst[ dstOffset + 2 ] = z1;
			dst[ dstOffset + 3 ] = w1;
			return;

}

if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {

let s = 1 - t;
			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
				dir = ( cos >= 0 ? 1 : - 1 ),
				sqrSin = 1 - cos * cos;

// Skip the Slerp for tiny steps to avoid numeric problems:
			if ( sqrSin > Number.EPSILON ) {

const sin = Math.sqrt( sqrSin ),
					len = Math.atan2( sin, cos * dir );

s = Math.sin( s * len ) / sin;
				t = Math.sin( t * len ) / sin;

}

const tDir = t * dir;

x0 = x0 * s + x1 * tDir;
			y0 = y0 * s + y1 * tDir;
			z0 = z0 * s + z1 * tDir;
			w0 = w0 * s + w1 * tDir;

// Normalize in case we just did a lerp:
			if ( s === 1 - t ) {

const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );

x0 *= f;
				y0 *= f;
				z0 *= f;
				w0 *= f;

}

dst[ dstOffset ] = x0;
		dst[ dstOffset + 1 ] = y0;
		dst[ dstOffset + 2 ] = z0;
		dst[ dstOffset + 3 ] = w0;

}

static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {

const x0 = src0[ srcOffset0 ];
		const y0 = src0[ srcOffset0 + 1 ];
		const z0 = src0[ srcOffset0 + 2 ];
		const w0 = src0[ srcOffset0 + 3 ];

const x1 = src1[ srcOffset1 ];
		const y1 = src1[ srcOffset1 + 1 ];
		const z1 = src1[ srcOffset1 + 2 ];
		const w1 = src1[ srcOffset1 + 3 ];

dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;

return dst;

}

get x() {

return this._x;

}

set x( value ) {

this._x = value;
		this._onChangeCallback();

}

get y() {

return this._y;

}

set y( value ) {

this._y = value;
		this._onChangeCallback();

}

get z() {

return this._z;

}

set z( value ) {

this._z = value;
		this._onChangeCallback();

}

get w() {

return this._w;

}

set w( value ) {

this._w = value;
		this._onChangeCallback();

}

set( x, y, z, w ) {

this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;

this._onChangeCallback();

return this;

}

clone() {

return new this.constructor( this._x, this._y, this._z, this._w );

}

copy( quaternion ) {

this._x = quaternion.x;
		this._y = quaternion.y;
		this._z = quaternion.z;
		this._w = quaternion.w;

this._onChangeCallback();

return this;

}

setFromEuler( euler, update ) {

const x = euler._x, y = euler._y, z = euler._z, order = euler._order;

// http://www.mathworks.com/matlabcentral/fileexchange/
		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
		//	content/SpinCalc.m

const cos = Math.cos;
		const sin = Math.sin;

const c1 = cos( x / 2 );
		const c2 = cos( y / 2 );
		const c3 = cos( z / 2 );

const s1 = sin( x / 2 );
		const s2 = sin( y / 2 );
		const s3 = sin( z / 2 );

switch ( order ) {

case 'XYZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

case 'YXZ':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

case 'ZXY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

case 'ZYX':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

case 'YZX':
				this._x = s1 * c2 * c3 + c1 * s2 * s3;
				this._y = c1 * s2 * c3 + s1 * c2 * s3;
				this._z = c1 * c2 * s3 - s1 * s2 * c3;
				this._w = c1 * c2 * c3 - s1 * s2 * s3;
				break;

case 'XZY':
				this._x = s1 * c2 * c3 - c1 * s2 * s3;
				this._y = c1 * s2 * c3 - s1 * c2 * s3;
				this._z = c1 * c2 * s3 + s1 * s2 * c3;
				this._w = c1 * c2 * c3 + s1 * s2 * s3;
				break;

default:
				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );

}

if ( update !== false ) this._onChangeCallback();

return this;

}

setFromAxisAngle( axis, angle ) {

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm

// assumes axis is normalized

const halfAngle = angle / 2, s = Math.sin( halfAngle );

this._x = axis.x * s;
		this._y = axis.y * s;
		this._z = axis.z * s;
		this._w = Math.cos( halfAngle );

this._onChangeCallback();

return this;

}

setFromRotationMatrix( m ) {

// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm

// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

const te = m.elements,

m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],

trace = m11 + m22 + m33;

if ( trace > 0 ) {

const s = 0.5 / Math.sqrt( trace + 1.0 );

this._w = 0.25 / s;
			this._x = ( m32 - m23 ) * s;
			this._y = ( m13 - m31 ) * s;
			this._z = ( m21 - m12 ) * s;

} else if ( m11 > m22 && m11 > m33 ) {

const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );

this._w = ( m32 - m23 ) / s;
			this._x = 0.25 * s;
			this._y = ( m12 + m21 ) / s;
			this._z = ( m13 + m31 ) / s;

} else if ( m22 > m33 ) {

const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );

this._w = ( m13 - m31 ) / s;
			this._x = ( m12 + m21 ) / s;
			this._y = 0.25 * s;
			this._z = ( m23 + m32 ) / s;

} else {

const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );

this._w = ( m21 - m12 ) / s;
			this._x = ( m13 + m31 ) / s;
			this._y = ( m23 + m32 ) / s;
			this._z = 0.25 * s;

}

this._onChangeCallback();

return this;

}

setFromUnitVectors( vFrom, vTo ) {

// assumes direction vectors vFrom and vTo are normalized

let r = vFrom.dot( vTo ) + 1;

if ( r < Number.EPSILON ) {

// vFrom and vTo point in opposite directions

r = 0;

if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {

this._x = - vFrom.y;
				this._y = vFrom.x;
				this._z = 0;
				this._w = r;

} else {

this._x = 0;
				this._y = - vFrom.z;
				this._z = vFrom.y;
				this._w = r;

}

} else {

// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3

this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
			this._w = r;

}

return this.normalize();

}

angleTo( q ) {

return 2 * Math.acos( Math.abs( clamp( this.dot( q ), - 1, 1 ) ) );

}

rotateTowards( q, step ) {

const angle = this.angleTo( q );

if ( angle === 0 ) return this;

const t = Math.min( 1, step / angle );

this.slerp( q, t );

return this;

}

identity() {

return this.set( 0, 0, 0, 1 );

}

invert() {

// quaternion is assumed to have unit length

return this.conjugate();

}

conjugate() {

this._x *= - 1;
		this._y *= - 1;
		this._z *= - 1;

this._onChangeCallback();

return this;

}

dot( v ) {

return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;

}

lengthSq() {

return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;

}

length() {

return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );

}

normalize() {

let l = this.length();

if ( l === 0 ) {

this._x = 0;
			this._y = 0;
			this._z = 0;
			this._w = 1;

} else {

l = 1 / l;

this._x = this._x * l;
			this._y = this._y * l;
			this._z = this._z * l;
			this._w = this._w * l;

}

this._onChangeCallback();

return this;

}

multiply( q ) {

return this.multiplyQuaternions( this, q );

}

premultiply( q ) {

return this.multiplyQuaternions( q, this );

}

multiplyQuaternions( a, b ) {

// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;

this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

this._onChangeCallback();

return this;

}

slerp( qb, t ) {

if ( t === 0 ) return this;
		if ( t === 1 ) return this.copy( qb );

const x = this._x, y = this._y, z = this._z, w = this._w;

// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;

if ( cosHalfTheta < 0 ) {

this._w = - qb._w;
			this._x = - qb._x;
			this._y = - qb._y;
			this._z = - qb._z;

cosHalfTheta = - cosHalfTheta;

} else {

this.copy( qb );

}

if ( cosHalfTheta >= 1.0 ) {

this._w = w;
			this._x = x;
			this._y = y;
			this._z = z;

return this;

}

const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;

if ( sqrSinHalfTheta <= Number.EPSILON ) {

const s = 1 - t;
			this._w = s * w + t * this._w;
			this._x = s * x + t * this._x;
			this._y = s * y + t * this._y;
			this._z = s * z + t * this._z;

this.normalize();
			this._onChangeCallback();

return this;

}

const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

this._w = ( w * ratioA + this._w * ratioB );
		this._x = ( x * ratioA + this._x * ratioB );
		this._y = ( y * ratioA + this._y * ratioB );
		this._z = ( z * ratioA + this._z * ratioB );

this._onChangeCallback();

return this;

}

slerpQuaternions( qa, qb, t ) {

return this.copy( qa ).slerp( qb, t );

}

random() {

// Derived from http://planning.cs.uiuc.edu/node198.html
		// Note, this source uses w, x, y, z ordering,
		// so we swap the order below.

const u1 = Math.random();
		const sqrt1u1 = Math.sqrt( 1 - u1 );
		const sqrtu1 = Math.sqrt( u1 );

const u2 = 2 * Math.PI * Math.random();

const u3 = 2 * Math.PI * Math.random();

return this.set(
			sqrt1u1 * Math.cos( u2 ),
			sqrtu1 * Math.sin( u3 ),
			sqrtu1 * Math.cos( u3 ),
			sqrt1u1 * Math.sin( u2 ),
		);

}

equals( quaternion ) {

return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );

}

fromArray( array, offset = 0 ) {

this._x = array[ offset ];
		this._y = array[ offset + 1 ];
		this._z = array[ offset + 2 ];
		this._w = array[ offset + 3 ];

this._onChangeCallback();

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._w;

return array;

}

fromBufferAttribute( attribute, index ) {

this._x = attribute.getX( index );
		this._y = attribute.getY( index );
		this._z = attribute.getZ( index );
		this._w = attribute.getW( index );

return this;

}

toJSON() {

return this.toArray();

}

_onChange( callback ) {

this._onChangeCallback = callback;

return this;

}

_onChangeCallback() {}

*[ Symbol.iterator ]() {

yield this._x;
		yield this._y;
		yield this._z;
		yield this._w;

}

class Vector3 {

constructor( x = 0, y = 0, z = 0 ) {

Vector3.prototype.isVector3 = true;

this.x = x;
		this.y = y;
		this.z = z;

}

set( x, y, z ) {

if ( z === undefined ) z = this.z; // sprite.scale.set(x,y)

this.x = x;
		this.y = y;
		this.z = z;

return this;

}

setScalar( scalar ) {

this.x = scalar;
		this.y = scalar;
		this.z = scalar;

return this;

}

setX( x ) {

this.x = x;

return this;

}

setY( y ) {

this.y = y;

return this;

}

setZ( z ) {

this.z = z;

return this;

}

setComponent( index, value ) {

switch ( index ) {

case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			default: throw new Error( 'index is out of range: ' + index );

}

return this;

}

getComponent( index ) {

switch ( index ) {

case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			default: throw new Error( 'index is out of range: ' + index );

}

clone() {

return new this.constructor( this.x, this.y, this.z );

}

copy( v ) {

this.x = v.x;
		this.y = v.y;
		this.z = v.z;

return this;

}

add( v ) {

this.x += v.x;
		this.y += v.y;
		this.z += v.z;

return this;

}

addScalar( s ) {

this.x += s;
		this.y += s;
		this.z += s;

return this;

}

addVectors( a, b ) {

this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;

return this;

}

addScaledVector( v, s ) {

this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;

return this;

}

sub( v ) {

this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;

return this;

}

subScalar( s ) {

this.x -= s;
		this.y -= s;
		this.z -= s;

return this;

}

subVectors( a, b ) {

this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;

return this;

}

multiply( v ) {

this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;

return this;

}

multiplyScalar( scalar ) {

this.x *= scalar;
		this.y *= scalar;
		this.z *= scalar;

return this;

}

multiplyVectors( a, b ) {

this.x = a.x * b.x;
		this.y = a.y * b.y;
		this.z = a.z * b.z;

return this;

}

applyEuler( euler ) {

return this.applyQuaternion( _quaternion$4.setFromEuler( euler ) );

}

applyAxisAngle( axis, angle ) {

return this.applyQuaternion( _quaternion$4.setFromAxisAngle( axis, angle ) );

}

applyMatrix3( m ) {

const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;

return this;

}

applyNormalMatrix( m ) {

return this.applyMatrix3( m ).normalize();

}

applyMatrix4( m ) {

const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );

this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;

return this;

}

applyQuaternion( q ) {

const x = this.x, y = this.y, z = this.z;
		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;

// calculate quat * vector

const ix = qw * x + qy * z - qz * y;
		const iy = qw * y + qz * x - qx * z;
		const iz = qw * z + qx * y - qy * x;
		const iw = - qx * x - qy * y - qz * z;

// calculate result * inverse quat

this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;

return this;

}

project( camera ) {

return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );

}

unproject( camera ) {

return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );

}

transformDirection( m ) {

// input: THREE.Matrix4 affine matrix
		// vector interpreted as a direction

const x = this.x, y = this.y, z = this.z;
		const e = m.elements;

this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;

return this.normalize();

}

divide( v ) {

this.x /= v.x;
		this.y /= v.y;
		this.z /= v.z;

return this;

}

divideScalar( scalar ) {

return this.multiplyScalar( 1 / scalar );

}

min( v ) {

this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );

return this;

}

max( v ) {

this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );

return this;

}

clamp( min, max ) {

// assumes min < max, componentwise

this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );

return this;

}

clampScalar( minVal, maxVal ) {

this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );

return this;

}

clampLength( min, max ) {

const length = this.length();

return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );

}

floor() {

this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );

return this;

}

ceil() {

this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );

return this;

}

round() {

this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );

return this;

}

roundToZero() {

return this;

}

negate() {

this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;

return this;

}

dot( v ) {

return this.x * v.x + this.y * v.y + this.z * v.z;

}

// TODO lengthSquared?

lengthSq() {

return this.x * this.x + this.y * this.y + this.z * this.z;

}

length() {

return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );

}

manhattanLength() {

return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );

}

normalize() {

return this.divideScalar( this.length() || 1 );

}

setLength( length ) {

return this.normalize().multiplyScalar( length );

}

lerp( v, alpha ) {

this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;

return this;

}

lerpVectors( v1, v2, alpha ) {

this.x = v1.x + ( v2.x - v1.x ) * alpha;
		this.y = v1.y + ( v2.y - v1.y ) * alpha;
		this.z = v1.z + ( v2.z - v1.z ) * alpha;

return this;

}

cross( v ) {

return this.crossVectors( this, v );

}

crossVectors( a, b ) {

const ax = a.x, ay = a.y, az = a.z;
		const bx = b.x, by = b.y, bz = b.z;

this.x = ay * bz - az * by;
		this.y = az * bx - ax * bz;
		this.z = ax * by - ay * bx;

return this;

}

projectOnVector( v ) {

const denominator = v.lengthSq();

if ( denominator === 0 ) return this.set( 0, 0, 0 );

const scalar = v.dot( this ) / denominator;

return this.copy( v ).multiplyScalar( scalar );

}

projectOnPlane( planeNormal ) {

_vector$b.copy( this ).projectOnVector( planeNormal );

return this.sub( _vector$b );

}

reflect( normal ) {

// reflect incident vector off plane orthogonal to normal
		// normal is assumed to have unit length

return this.sub( _vector$b.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );

}

angleTo( v ) {

const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );

if ( denominator === 0 ) return Math.PI / 2;

const theta = this.dot( v ) / denominator;

// clamp, to handle numerical problems

return Math.acos( clamp( theta, - 1, 1 ) );

}

distanceTo( v ) {

return Math.sqrt( this.distanceToSquared( v ) );

}

distanceToSquared( v ) {

const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;

return dx * dx + dy * dy + dz * dz;

}

manhattanDistanceTo( v ) {

return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );

}

setFromSpherical( s ) {

return this.setFromSphericalCoords( s.radius, s.phi, s.theta );

}

setFromSphericalCoords( radius, phi, theta ) {

const sinPhiRadius = Math.sin( phi ) * radius;

this.x = sinPhiRadius * Math.sin( theta );
		this.y = Math.cos( phi ) * radius;
		this.z = sinPhiRadius * Math.cos( theta );

return this;

}

setFromCylindrical( c ) {

return this.setFromCylindricalCoords( c.radius, c.theta, c.y );

}

setFromCylindricalCoords( radius, theta, y ) {

this.x = radius * Math.sin( theta );
		this.y = y;
		this.z = radius * Math.cos( theta );

return this;

}

setFromMatrixPosition( m ) {

const e = m.elements;

this.x = e[ 12 ];
		this.y = e[ 13 ];
		this.z = e[ 14 ];

return this;

}

setFromMatrixScale( m ) {

const sx = this.setFromMatrixColumn( m, 0 ).length();
		const sy = this.setFromMatrixColumn( m, 1 ).length();
		const sz = this.setFromMatrixColumn( m, 2 ).length();

this.x = sx;
		this.y = sy;
		this.z = sz;

return this;

}

setFromMatrixColumn( m, index ) {

return this.fromArray( m.elements, index * 4 );

}

setFromMatrix3Column( m, index ) {

return this.fromArray( m.elements, index * 3 );

}

setFromEuler( e ) {

this.x = e._x;
		this.y = e._y;
		this.z = e._z;

return this;

}

setFromColor( c ) {

this.x = c.r;
		this.y = c.g;
		this.z = c.b;

return this;

}

equals( v ) {

return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );

}

fromArray( array, offset = 0 ) {

this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;

return array;

}

fromBufferAttribute( attribute, index ) {

this.x = attribute.getX( index );
		this.y = attribute.getY( index );
		this.z = attribute.getZ( index );

return this;

}

random() {

this.x = Math.random();
		this.y = Math.random();
		this.z = Math.random();

return this;

}

randomDirection() {

// Derived from https://mathworld.wolfram.com/SpherePointPicking.html

const u = ( Math.random() - 0.5 ) * 2;
		const t = Math.random() * Math.PI * 2;
		const f = Math.sqrt( 1 - u ** 2 );

this.x = f * Math.cos( t );
		this.y = f * Math.sin( t );
		this.z = u;

return this;

}

*[ Symbol.iterator ]() {

yield this.x;
		yield this.y;
		yield this.z;

}

const _vector$b = /*@__PURE__*/ new Vector3();
const _quaternion$4 = /*@__PURE__*/ new Quaternion();

class Box3 {

constructor( min = new Vector3( + Infinity, + Infinity, + Infinity ), max = new Vector3( - Infinity, - Infinity, - Infinity ) ) {

this.isBox3 = true;

this.min = min;
		this.max = max;

}

set( min, max ) {

this.min.copy( min );
		this.max.copy( max );

return this;

}

setFromArray( array ) {

this.makeEmpty();

for ( let i = 0, il = array.length; i < il; i += 3 ) {

this.expandByPoint( _vector$a.fromArray( array, i ) );

}

return this;

}

setFromBufferAttribute( attribute ) {

this.makeEmpty();

for ( let i = 0, il = attribute.count; i < il; i ++ ) {

this.expandByPoint( _vector$a.fromBufferAttribute( attribute, i ) );

}

return this;

}

setFromPoints( points ) {

this.makeEmpty();

for ( let i = 0, il = points.length; i < il; i ++ ) {

this.expandByPoint( points[ i ] );

}

return this;

}

setFromCenterAndSize( center, size ) {

const halfSize = _vector$a.copy( size ).multiplyScalar( 0.5 );

this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );

return this;

}

setFromObject( object, precise = false ) {

this.makeEmpty();

return this.expandByObject( object, precise );

}

clone() {

return new this.constructor().copy( this );

}

copy( box ) {

this.min.copy( box.min );
		this.max.copy( box.max );

return this;

}

makeEmpty() {

this.min.x = this.min.y = this.min.z = + Infinity;
		this.max.x = this.max.y = this.max.z = - Infinity;

return this;

}

isEmpty() {

// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );

}

getCenter( target ) {

return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

}

getSize( target ) {

return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );

}

expandByPoint( point ) {

this.min.min( point );
		this.max.max( point );

return this;

}

expandByVector( vector ) {

this.min.sub( vector );
		this.max.add( vector );

return this;

}

expandByScalar( scalar ) {

this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

return this;

}

expandByObject( object, precise = false ) {

// Computes the world-axis-aligned bounding box of an object (including its children),
		// accounting for both the object's, and children's, world transforms

object.updateWorldMatrix( false, false );

if ( object.boundingBox !== undefined ) {

if ( object.boundingBox === null ) {

object.computeBoundingBox();

}

_box$3.copy( object.boundingBox );
			_box$3.applyMatrix4( object.matrixWorld );

this.union( _box$3 );

} else {

const geometry = object.geometry;

if ( geometry !== undefined ) {

if ( precise && geometry.attributes !== undefined && geometry.attributes.position !== undefined ) {

const position = geometry.attributes.position;
					for ( let i = 0, l = position.count; i < l; i ++ ) {

_vector$a.fromBufferAttribute( position, i ).applyMatrix4( object.matrixWorld );
						this.expandByPoint( _vector$a );

}

} else {

if ( geometry.boundingBox === null ) {

geometry.computeBoundingBox();

}

_box$3.copy( geometry.boundingBox );
					_box$3.applyMatrix4( object.matrixWorld );

this.union( _box$3 );

}

const children = object.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

this.expandByObject( children[ i ], precise );

}

return this;

}

containsPoint( point ) {

return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ||
			point.z < this.min.z || point.z > this.max.z ? false : true;

}

containsBox( box ) {

return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y &&
			this.min.z <= box.min.z && box.max.z <= this.max.z;

}

getParameter( point, target ) {

// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
			( point.z - this.min.z ) / ( this.max.z - this.min.z )
		);

}

intersectsBox( box ) {

// using 6 splitting planes to rule out intersections.
		return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ||
			box.max.z < this.min.z || box.min.z > this.max.z ? false : true;

}

intersectsSphere( sphere ) {

// Find the point on the AABB closest to the sphere center.
		this.clampPoint( sphere.center, _vector$a );

// If that point is inside the sphere, the AABB and sphere intersect.
		return _vector$a.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );

}

intersectsPlane( plane ) {

// We compute the minimum and maximum dot product values. If those values
		// are on the same side (back or front) of the plane, then there is no intersection.

let min, max;

if ( plane.normal.x > 0 ) {

min = plane.normal.x * this.min.x;
			max = plane.normal.x * this.max.x;

} else {

min = plane.normal.x * this.max.x;
			max = plane.normal.x * this.min.x;

}

if ( plane.normal.y > 0 ) {

min += plane.normal.y * this.min.y;
			max += plane.normal.y * this.max.y;

} else {

min += plane.normal.y * this.max.y;
			max += plane.normal.y * this.min.y;

}

if ( plane.normal.z > 0 ) {

min += plane.normal.z * this.min.z;
			max += plane.normal.z * this.max.z;

} else {

min += plane.normal.z * this.max.z;
			max += plane.normal.z * this.min.z;

}

return ( min <= - plane.constant && max >= - plane.constant );

}

intersectsTriangle( triangle ) {

if ( this.isEmpty() ) {

return false;

}

// compute box center and extents
		this.getCenter( _center );
		_extents.subVectors( this.max, _center );

// translate triangle to aabb origin
		_v0$2.subVectors( triangle.a, _center );
		_v1$7.subVectors( triangle.b, _center );
		_v2$4.subVectors( triangle.c, _center );

// compute edge vectors for triangle
		_f0.subVectors( _v1$7, _v0$2 );
		_f1.subVectors( _v2$4, _v1$7 );
		_f2.subVectors( _v0$2, _v2$4 );

// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
		// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
		// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
		let axes = [
			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
		];
		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents ) ) {

return false;

}

// test 3 face normals from the aabb
		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
		if ( ! satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents ) ) {

return false;

}

// finally testing the face normal of the triangle
		// use already existing triangle edge vectors here
		_triangleNormal.crossVectors( _f0, _f1 );
		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];

return satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents );

}

clampPoint( point, target ) {

return target.copy( point ).clamp( this.min, this.max );

}

distanceToPoint( point ) {

return this.clampPoint( point, _vector$a ).distanceTo( point );

}

getBoundingSphere( target ) {

if ( this.isEmpty() ) {

target.makeEmpty();

} else {

this.getCenter( target.center );

target.radius = this.getSize( _vector$a ).length() * 0.5;

}

return target;

}

intersect( box ) {

this.min.max( box.min );
		this.max.min( box.max );

// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
		if ( this.isEmpty() ) this.makeEmpty();

return this;

}

union( box ) {

this.min.min( box.min );
		this.max.max( box.max );

return this;

}

applyMatrix4( matrix ) {

// transform of empty box is an empty box.
		if ( this.isEmpty() ) return this;

// NOTE: I am using a binary pattern to specify all 2^3 combinations below
		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111

this.setFromPoints( _points );

return this;

}

translate( offset ) {

this.min.add( offset );
		this.max.add( offset );

return this;

}

equals( box ) {

return box.min.equals( this.min ) && box.max.equals( this.max );

}

const _points = [
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3(),
	/*@__PURE__*/ new Vector3()
];

const _vector$a = /*@__PURE__*/ new Vector3();

const _box$3 = /*@__PURE__*/ new Box3();

// triangle centered vertices

const _v0$2 = /*@__PURE__*/ new Vector3();
const _v1$7 = /*@__PURE__*/ new Vector3();
const _v2$4 = /*@__PURE__*/ new Vector3();

// triangle edge vectors

const _f0 = /*@__PURE__*/ new Vector3();
const _f1 = /*@__PURE__*/ new Vector3();
const _f2 = /*@__PURE__*/ new Vector3();

const _center = /*@__PURE__*/ new Vector3();
const _extents = /*@__PURE__*/ new Vector3();
const _triangleNormal = /*@__PURE__*/ new Vector3();
const _testAxis = /*@__PURE__*/ new Vector3();

function satForAxes( axes, v0, v1, v2, extents ) {

for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {

_testAxis.fromArray( axes, i );
		// project the aabb onto the separating axis
		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
		// project all 3 vertices of the triangle onto the separating axis
		const p0 = v0.dot( _testAxis );
		const p1 = v1.dot( _testAxis );
		const p2 = v2.dot( _testAxis );
		// actual test, basically see if either of the most extreme of the triangle points intersects r
		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {

// points of the projected triangle are outside the projected half-length of the aabb
			// the axis is separating and we can exit
			return false;

}

return true;

}

const _box$2 = /*@__PURE__*/ new Box3();
const _v1$6 = /*@__PURE__*/ new Vector3();
const _v2$3 = /*@__PURE__*/ new Vector3();

class Sphere {

constructor( center = new Vector3(), radius = - 1 ) {

this.center = center;
		this.radius = radius;

}

set( center, radius ) {

this.center.copy( center );
		this.radius = radius;

return this;

}

setFromPoints( points, optionalCenter ) {

const center = this.center;

if ( optionalCenter !== undefined ) {

center.copy( optionalCenter );

} else {

_box$2.setFromPoints( points ).getCenter( center );

}

let maxRadiusSq = 0;

for ( let i = 0, il = points.length; i < il; i ++ ) {

maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );

}

this.radius = Math.sqrt( maxRadiusSq );

return this;

}

copy( sphere ) {

this.center.copy( sphere.center );
		this.radius = sphere.radius;

return this;

}

isEmpty() {

return ( this.radius < 0 );

}

makeEmpty() {

this.center.set( 0, 0, 0 );
		this.radius = - 1;

return this;

}

containsPoint( point ) {

return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );

}

distanceToPoint( point ) {

return ( point.distanceTo( this.center ) - this.radius );

}

intersectsSphere( sphere ) {

const radiusSum = this.radius + sphere.radius;

return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );

}

intersectsBox( box ) {

return box.intersectsSphere( this );

}

intersectsPlane( plane ) {

return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;

}

clampPoint( point, target ) {

const deltaLengthSq = this.center.distanceToSquared( point );

target.copy( point );

if ( deltaLengthSq > ( this.radius * this.radius ) ) {

target.sub( this.center ).normalize();
			target.multiplyScalar( this.radius ).add( this.center );

}

return target;

}

getBoundingBox( target ) {

if ( this.isEmpty() ) {

// Empty sphere produces empty bounding box
			target.makeEmpty();
			return target;

}

target.set( this.center, this.center );
		target.expandByScalar( this.radius );

return target;

}

applyMatrix4( matrix ) {

this.center.applyMatrix4( matrix );
		this.radius = this.radius * matrix.getMaxScaleOnAxis();

return this;

}

translate( offset ) {

this.center.add( offset );

return this;

}

expandByPoint( point ) {

if ( this.isEmpty() ) {

this.center.copy( point );

this.radius = 0;

return this;

}

_v1$6.subVectors( point, this.center );

const lengthSq = _v1$6.lengthSq();

if ( lengthSq > ( this.radius * this.radius ) ) {

// calculate the minimal sphere

const length = Math.sqrt( lengthSq );

const delta = ( length - this.radius ) * 0.5;

this.center.addScaledVector( _v1$6, delta / length );

this.radius += delta;

}

return this;

}

union( sphere ) {

if ( sphere.isEmpty() ) {

return this;

}

if ( this.isEmpty() ) {

this.copy( sphere );

return this;

}

if ( this.center.equals( sphere.center ) === true ) {

this.radius = Math.max( this.radius, sphere.radius );

} else {

_v2$3.subVectors( sphere.center, this.center ).setLength( sphere.radius );

this.expandByPoint( _v1$6.copy( sphere.center ).add( _v2$3 ) );

this.expandByPoint( _v1$6.copy( sphere.center ).sub( _v2$3 ) );

}

return this;

}

equals( sphere ) {

return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );

}

clone() {

return new this.constructor().copy( this );

}

const _vector$9 = /*@__PURE__*/ new Vector3();
const _segCenter = /*@__PURE__*/ new Vector3();
const _segDir = /*@__PURE__*/ new Vector3();
const _diff = /*@__PURE__*/ new Vector3();

const _edge1 = /*@__PURE__*/ new Vector3();
const _edge2 = /*@__PURE__*/ new Vector3();
const _normal$1 = /*@__PURE__*/ new Vector3();

class Ray {

constructor( origin = new Vector3(), direction = new Vector3( 0, 0, - 1 ) ) {

this.origin = origin;
		this.direction = direction;

}

set( origin, direction ) {

this.origin.copy( origin );
		this.direction.copy( direction );

return this;

}

copy( ray ) {

this.origin.copy( ray.origin );
		this.direction.copy( ray.direction );

return this;

}

at( t, target ) {

return target.copy( this.origin ).addScaledVector( this.direction, t );

}

lookAt( v ) {

this.direction.copy( v ).sub( this.origin ).normalize();

return this;

}

recast( t ) {

this.origin.copy( this.at( t, _vector$9 ) );

return this;

}

closestPointToPoint( point, target ) {

target.subVectors( point, this.origin );

const directionDistance = target.dot( this.direction );

if ( directionDistance < 0 ) {

return target.copy( this.origin );

}

return target.copy( this.origin ).addScaledVector( this.direction, directionDistance );

}

distanceToPoint( point ) {

return Math.sqrt( this.distanceSqToPoint( point ) );

}

distanceSqToPoint( point ) {

const directionDistance = _vector$9.subVectors( point, this.origin ).dot( this.direction );

// point behind the ray

if ( directionDistance < 0 ) {

return this.origin.distanceToSquared( point );

}

_vector$9.copy( this.origin ).addScaledVector( this.direction, directionDistance );

return _vector$9.distanceToSquared( point );

}

distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {

// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteDistRaySegment.h
		// It returns the min distance between the ray and the segment
		// defined by v0 and v1
		// It can also set two optional targets :
		// - The closest point on the ray
		// - The closest point on the segment

_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
		_segDir.copy( v1 ).sub( v0 ).normalize();
		_diff.copy( this.origin ).sub( _segCenter );

const segExtent = v0.distanceTo( v1 ) * 0.5;
		const a01 = - this.direction.dot( _segDir );
		const b0 = _diff.dot( this.direction );
		const b1 = - _diff.dot( _segDir );
		const c = _diff.lengthSq();
		const det = Math.abs( 1 - a01 * a01 );
		let s0, s1, sqrDist, extDet;

if ( det > 0 ) {

// The ray and segment are not parallel.

s0 = a01 * b1 - b0;
			s1 = a01 * b0 - b1;
			extDet = segExtent * det;

if ( s0 >= 0 ) {

if ( s1 >= - extDet ) {

if ( s1 <= extDet ) {

// region 0
						// Minimum at interior points of ray and segment.

const invDet = 1 / det;
						s0 *= invDet;
						s1 *= invDet;
						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;

} else {

// region 1

s1 = segExtent;
						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

}

} else {

// region 5

s1 = - segExtent;
					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

}

} else {

if ( s1 <= - extDet ) {

// region 4

s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

} else if ( s1 <= extDet ) {

// region 3

s0 = 0;
					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = s1 * ( s1 + 2 * b1 ) + c;

} else {

// region 2

s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

}

} else {

// Ray and segment are parallel.

s1 = ( a01 > 0 ) ? - segExtent : segExtent;
			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

}

if ( optionalPointOnRay ) {

optionalPointOnRay.copy( this.origin ).addScaledVector( this.direction, s0 );

}

if ( optionalPointOnSegment ) {

optionalPointOnSegment.copy( _segCenter ).addScaledVector( _segDir, s1 );

}

return sqrDist;

}

intersectSphere( sphere, target ) {

_vector$9.subVectors( sphere.center, this.origin );
		const tca = _vector$9.dot( this.direction );
		const d2 = _vector$9.dot( _vector$9 ) - tca * tca;
		const radius2 = sphere.radius * sphere.radius;

if ( d2 > radius2 ) return null;

const thc = Math.sqrt( radius2 - d2 );

// t0 = first intersect point - entrance on front of sphere
		const t0 = tca - thc;

// t1 = second intersect point - exit point on back of sphere
		const t1 = tca + thc;

// test to see if t1 is behind the ray - if so, return null
		if ( t1 < 0 ) return null;

// test to see if t0 is behind the ray:
		// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
		// in order to always return an intersect point that is in front of the ray.
		if ( t0 < 0 ) return this.at( t1, target );

// else t0 is in front of the ray, so return the first collision point scaled by t0
		return this.at( t0, target );

}

intersectsSphere( sphere ) {

return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );

}

distanceToPlane( plane ) {

const denominator = plane.normal.dot( this.direction );

if ( denominator === 0 ) {

// line is coplanar, return origin
			if ( plane.distanceToPoint( this.origin ) === 0 ) {

return 0;

}

// Null is preferable to undefined since undefined means.... it is undefined

return null;

}

const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;

// Return if the ray never intersects the plane

return t >= 0 ? t : null;

}

intersectPlane( plane, target ) {

const t = this.distanceToPlane( plane );

if ( t === null ) {

return null;

}

return this.at( t, target );

}

intersectsPlane( plane ) {

// check if the ray lies on the plane first

const distToPoint = plane.distanceToPoint( this.origin );

if ( distToPoint === 0 ) {

return true;

}

const denominator = plane.normal.dot( this.direction );

if ( denominator * distToPoint < 0 ) {

return true;

}

// ray origin is behind the plane (and is pointing behind it)

return false;

}

intersectBox( box, target ) {

let tmin, tmax, tymin, tymax, tzmin, tzmax;

const invdirx = 1 / this.direction.x,
			invdiry = 1 / this.direction.y,
			invdirz = 1 / this.direction.z;

const origin = this.origin;

if ( invdirx >= 0 ) {

tmin = ( box.min.x - origin.x ) * invdirx;
			tmax = ( box.max.x - origin.x ) * invdirx;

} else {

tmin = ( box.max.x - origin.x ) * invdirx;
			tmax = ( box.min.x - origin.x ) * invdirx;

}

if ( invdiry >= 0 ) {

tymin = ( box.min.y - origin.y ) * invdiry;
			tymax = ( box.max.y - origin.y ) * invdiry;

} else {

tymin = ( box.max.y - origin.y ) * invdiry;
			tymax = ( box.min.y - origin.y ) * invdiry;

}

if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;

if ( tymin > tmin || isNaN( tmin ) ) tmin = tymin;

if ( tymax < tmax || isNaN( tmax ) ) tmax = tymax;

if ( invdirz >= 0 ) {

tzmin = ( box.min.z - origin.z ) * invdirz;
			tzmax = ( box.max.z - origin.z ) * invdirz;

} else {

tzmin = ( box.max.z - origin.z ) * invdirz;
			tzmax = ( box.min.z - origin.z ) * invdirz;

}

if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;

if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;

if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;

//return point closest to the ray (positive side)

if ( tmax < 0 ) return null;

return this.at( tmin >= 0 ? tmin : tmax, target );

}

intersectsBox( box ) {

return this.intersectBox( box, _vector$9 ) !== null;

}

intersectTriangle( a, b, c, backfaceCulling, target ) {

// Compute the offset origin, edges, and normal.

// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h

_edge1.subVectors( b, a );
		_edge2.subVectors( c, a );
		_normal$1.crossVectors( _edge1, _edge2 );

// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
		// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
		//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
		//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
		//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
		let DdN = this.direction.dot( _normal$1 );
		let sign;

if ( DdN > 0 ) {

if ( backfaceCulling ) return null;
			sign = 1;

} else if ( DdN < 0 ) {

sign = - 1;
			DdN = - DdN;

} else {

return null;

}

_diff.subVectors( this.origin, a );
		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );

// b1 < 0, no intersection
		if ( DdQxE2 < 0 ) {

return null;

}

const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );

// b2 < 0, no intersection
		if ( DdE1xQ < 0 ) {

return null;

}

// b1+b2 > 1, no intersection
		if ( DdQxE2 + DdE1xQ > DdN ) {

return null;

}

// Line intersects triangle, check if ray does.
		const QdN = - sign * _diff.dot( _normal$1 );

// t < 0, no intersection
		if ( QdN < 0 ) {

return null;

}

// Ray intersects triangle.
		return this.at( QdN / DdN, target );

}

applyMatrix4( matrix4 ) {

this.origin.applyMatrix4( matrix4 );
		this.direction.transformDirection( matrix4 );

return this;

}

equals( ray ) {

return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );

}

clone() {

return new this.constructor().copy( this );

}

class Matrix4 {

constructor() {

Matrix4.prototype.isMatrix4 = true;

this.elements = [

1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

];

}

set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

const te = this.elements;

te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;

return this;

}

identity() {

this.set(

1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

);

return this;

}

clone() {

return new Matrix4().fromArray( this.elements );

}

copy( m ) {

const te = this.elements;
		const me = m.elements;

te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];

return this;

}

copyPosition( m ) {

const te = this.elements, me = m.elements;

te[ 12 ] = me[ 12 ];
		te[ 13 ] = me[ 13 ];
		te[ 14 ] = me[ 14 ];

return this;

}

setFromMatrix3( m ) {

const me = m.elements;

this.set(

me[ 0 ], me[ 3 ], me[ 6 ], 0,
			me[ 1 ], me[ 4 ], me[ 7 ], 0,
			me[ 2 ], me[ 5 ], me[ 8 ], 0,
			0, 0, 0, 1

);

return this;

}

extractBasis( xAxis, yAxis, zAxis ) {

xAxis.setFromMatrixColumn( this, 0 );
		yAxis.setFromMatrixColumn( this, 1 );
		zAxis.setFromMatrixColumn( this, 2 );

return this;

}

makeBasis( xAxis, yAxis, zAxis ) {

this.set(
			xAxis.x, yAxis.x, zAxis.x, 0,
			xAxis.y, yAxis.y, zAxis.y, 0,
			xAxis.z, yAxis.z, zAxis.z, 0,
			0, 0, 0, 1
		);

return this;

}

extractRotation( m ) {

// this method does not support reflection matrices

const te = this.elements;
		const me = m.elements;

const scaleX = 1 / _v1$5.setFromMatrixColumn( m, 0 ).length();
		const scaleY = 1 / _v1$5.setFromMatrixColumn( m, 1 ).length();
		const scaleZ = 1 / _v1$5.setFromMatrixColumn( m, 2 ).length();

te[ 0 ] = me[ 0 ] * scaleX;
		te[ 1 ] = me[ 1 ] * scaleX;
		te[ 2 ] = me[ 2 ] * scaleX;
		te[ 3 ] = 0;

te[ 4 ] = me[ 4 ] * scaleY;
		te[ 5 ] = me[ 5 ] * scaleY;
		te[ 6 ] = me[ 6 ] * scaleY;
		te[ 7 ] = 0;

te[ 8 ] = me[ 8 ] * scaleZ;
		te[ 9 ] = me[ 9 ] * scaleZ;
		te[ 10 ] = me[ 10 ] * scaleZ;
		te[ 11 ] = 0;

te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

return this;

}

makeRotationFromEuler( euler ) {

const te = this.elements;

const x = euler.x, y = euler.y, z = euler.z;
		const a = Math.cos( x ), b = Math.sin( x );
		const c = Math.cos( y ), d = Math.sin( y );
		const e = Math.cos( z ), f = Math.sin( z );

if ( euler.order === 'XYZ' ) {

const ae = a * e, af = a * f, be = b * e, bf = b * f;

te[ 0 ] = c * e;
			te[ 4 ] = - c * f;
			te[ 8 ] = d;

te[ 1 ] = af + be * d;
			te[ 5 ] = ae - bf * d;
			te[ 9 ] = - b * c;

te[ 2 ] = bf - ae * d;
			te[ 6 ] = be + af * d;
			te[ 10 ] = a * c;

} else if ( euler.order === 'YXZ' ) {

const ce = c * e, cf = c * f, de = d * e, df = d * f;

te[ 0 ] = ce + df * b;
			te[ 4 ] = de * b - cf;
			te[ 8 ] = a * d;

te[ 1 ] = a * f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b;

te[ 2 ] = cf * b - de;
			te[ 6 ] = df + ce * b;
			te[ 10 ] = a * c;

} else if ( euler.order === 'ZXY' ) {

const ce = c * e, cf = c * f, de = d * e, df = d * f;

te[ 0 ] = ce - df * b;
			te[ 4 ] = - a * f;
			te[ 8 ] = de + cf * b;

te[ 1 ] = cf + de * b;
			te[ 5 ] = a * e;
			te[ 9 ] = df - ce * b;

te[ 2 ] = - a * d;
			te[ 6 ] = b;
			te[ 10 ] = a * c;

} else if ( euler.order === 'ZYX' ) {

const ae = a * e, af = a * f, be = b * e, bf = b * f;

te[ 0 ] = c * e;
			te[ 4 ] = be * d - af;
			te[ 8 ] = ae * d + bf;

te[ 1 ] = c * f;
			te[ 5 ] = bf * d + ae;
			te[ 9 ] = af * d - be;

te[ 2 ] = - d;
			te[ 6 ] = b * c;
			te[ 10 ] = a * c;

} else if ( euler.order === 'YZX' ) {

const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

te[ 0 ] = c * e;
			te[ 4 ] = bd - ac * f;
			te[ 8 ] = bc * f + ad;

te[ 1 ] = f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b * e;

te[ 2 ] = - d * e;
			te[ 6 ] = ad * f + bc;
			te[ 10 ] = ac - bd * f;

} else if ( euler.order === 'XZY' ) {

const ac = a * c, ad = a * d, bc = b * c, bd = b * d;

te[ 0 ] = c * e;
			te[ 4 ] = - f;
			te[ 8 ] = d * e;

te[ 1 ] = ac * f + bd;
			te[ 5 ] = a * e;
			te[ 9 ] = ad * f - bc;

te[ 2 ] = bc * f - ad;
			te[ 6 ] = b * e;
			te[ 10 ] = bd * f + ac;

}

// bottom row
		te[ 3 ] = 0;
		te[ 7 ] = 0;
		te[ 11 ] = 0;

// last column
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

return this;

}

makeRotationFromQuaternion( q ) {

return this.compose( _zero, q, _one );

}

lookAt( eye, target, up ) {

const te = this.elements;

_z.subVectors( eye, target );

if ( _z.lengthSq() === 0 ) {

// eye and target are in the same position

_z.z = 1;

}

_z.normalize();
		_x.crossVectors( up, _z );

if ( _x.lengthSq() === 0 ) {

// up and z are parallel

if ( Math.abs( up.z ) === 1 ) {

_z.x += 0.0001;

} else {

_z.z += 0.0001;

}

_z.normalize();
			_x.crossVectors( up, _z );

}

_x.normalize();
		_y.crossVectors( _z, _x );

te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;

return this;

}

multiply( m ) {

return this.multiplyMatrices( this, m );

}

premultiply( m ) {

return this.multiplyMatrices( m, this );

}

multiplyMatrices( a, b ) {

const ae = a.elements;
		const be = b.elements;
		const te = this.elements;

const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];

const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];

te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;

te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;

return this;

}

multiplyScalar( s ) {

const te = this.elements;

te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;

return this;

}

determinant() {

const te = this.elements;

const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];

//TODO: make this more efficient
		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

return (
			n41 * (
				+ n14 * n23 * n32
				 - n13 * n24 * n32
				 - n14 * n22 * n33
				 + n12 * n24 * n33
				 + n13 * n22 * n34
				 - n12 * n23 * n34
			) +
			n42 * (
				+ n11 * n23 * n34
				 - n11 * n24 * n33
				 + n14 * n21 * n33
				 - n13 * n21 * n34
				 + n13 * n24 * n31
				 - n14 * n23 * n31
			) +
			n43 * (
				+ n11 * n24 * n32
				 - n11 * n22 * n34
				 - n14 * n21 * n32
				 + n12 * n21 * n34
				 + n14 * n22 * n31
				 - n12 * n24 * n31
			) +
			n44 * (
				- n13 * n22 * n31
				 - n11 * n23 * n32
				 + n11 * n22 * n33
				 + n13 * n21 * n32
				 - n12 * n21 * n33
				 + n12 * n23 * n31
			)

);

}

transpose() {

const te = this.elements;
		let tmp;

tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;

tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;

return this;

}

setPosition( x, y, z ) {

const te = this.elements;

if ( x.isVector3 ) {

te[ 12 ] = x.x;
			te[ 13 ] = x.y;
			te[ 14 ] = x.z;

} else {

te[ 12 ] = x;
			te[ 13 ] = y;
			te[ 14 ] = z;

}

return this;

}

invert() {

// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
		const te = this.elements,

n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],
			n12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],
			n13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],
			n14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],

t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;

const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;

if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );

const detInv = 1 / det;

te[ 0 ] = t11 * detInv;
		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;

te[ 4 ] = t12 * detInv;
		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;

te[ 8 ] = t13 * detInv;
		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;

te[ 12 ] = t14 * detInv;
		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;

return this;

}

scale( v ) {

const te = this.elements;
		const x = v.x, y = v.y, z = v.z;

te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;

return this;

}

getMaxScaleOnAxis() {

const te = this.elements;

const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];

return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );

}

makeTranslation( x, y, z ) {

this.set(

1, 0, 0, x,
			0, 1, 0, y,
			0, 0, 1, z,
			0, 0, 0, 1

);

return this;

}

makeRotationX( theta ) {

const c = Math.cos( theta ), s = Math.sin( theta );

this.set(

1, 0, 0, 0,
			0, c, - s, 0,
			0, s, c, 0,
			0, 0, 0, 1

);

return this;

}

makeRotationY( theta ) {

const c = Math.cos( theta ), s = Math.sin( theta );

this.set(

c, 0, s, 0,
			 0, 1, 0, 0,
			- s, 0, c, 0,
			 0, 0, 0, 1

);

return this;

}

makeRotationZ( theta ) {

const c = Math.cos( theta ), s = Math.sin( theta );

this.set(

c, - s, 0, 0,
			s, c, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

);

return this;

}

makeRotationAxis( axis, angle ) {

// Based on http://www.gamedev.net/reference/articles/article1199.asp

const c = Math.cos( angle );
		const s = Math.sin( angle );
		const t = 1 - c;
		const x = axis.x, y = axis.y, z = axis.z;
		const tx = t * x, ty = t * y;

this.set(

tx * x + c, tx * y - s * z, tx * z + s * y, 0,
			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
			0, 0, 0, 1

);

return this;

}

makeScale( x, y, z ) {

this.set(

x, 0, 0, 0,
			0, y, 0, 0,
			0, 0, z, 0,
			0, 0, 0, 1

);

return this;

}

makeShear( xy, xz, yx, yz, zx, zy ) {

this.set(

1, yx, zx, 0,
			xy, 1, zy, 0,
			xz, yz, 1, 0,
			0, 0, 0, 1

);

return this;

}

compose( position, quaternion, scale ) {

const te = this.elements;

const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
		const x2 = x + x,	y2 = y + y, z2 = z + z;
		const xx = x * x2, xy = x * y2, xz = x * z2;
		const yy = y * y2, yz = y * z2, zz = z * z2;
		const wx = w * x2, wy = w * y2, wz = w * z2;

const sx = scale.x, sy = scale.y, sz = scale.z;

te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
		te[ 1 ] = ( xy + wz ) * sx;
		te[ 2 ] = ( xz - wy ) * sx;
		te[ 3 ] = 0;

te[ 4 ] = ( xy - wz ) * sy;
		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
		te[ 6 ] = ( yz + wx ) * sy;
		te[ 7 ] = 0;

te[ 8 ] = ( xz + wy ) * sz;
		te[ 9 ] = ( yz - wx ) * sz;
		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
		te[ 11 ] = 0;

te[ 12 ] = position.x;
		te[ 13 ] = position.y;
		te[ 14 ] = position.z;
		te[ 15 ] = 1;

return this;

}

decompose( position, quaternion, scale ) {

const te = this.elements;

let sx = _v1$5.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
		const sy = _v1$5.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
		const sz = _v1$5.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();

// if determine is negative, we need to invert one scale
		const det = this.determinant();
		if ( det < 0 ) sx = - sx;

position.x = te[ 12 ];
		position.y = te[ 13 ];
		position.z = te[ 14 ];

// scale the rotation part
		_m1$2.copy( this );

const invSX = 1 / sx;
		const invSY = 1 / sy;
		const invSZ = 1 / sz;

_m1$2.elements[ 0 ] *= invSX;
		_m1$2.elements[ 1 ] *= invSX;
		_m1$2.elements[ 2 ] *= invSX;

_m1$2.elements[ 4 ] *= invSY;
		_m1$2.elements[ 5 ] *= invSY;
		_m1$2.elements[ 6 ] *= invSY;

_m1$2.elements[ 8 ] *= invSZ;
		_m1$2.elements[ 9 ] *= invSZ;
		_m1$2.elements[ 10 ] *= invSZ;

quaternion.setFromRotationMatrix( _m1$2 );

scale.x = sx;
		scale.y = sy;
		scale.z = sz;

return this;

}

makePerspective( left, right, top, bottom, near, far ) {

const te = this.elements;
		const x = 2 * near / ( right - left );
		const y = 2 * near / ( top - bottom );

const a = ( right + left ) / ( right - left );
		const b = ( top + bottom ) / ( top - bottom );
		const c = - ( far + near ) / ( far - near );
		const d = - 2 * far * near / ( far - near );

te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;

return this;

}

makeOrthographic( left, right, top, bottom, near, far ) {

const te = this.elements;
		const w = 1.0 / ( right - left );
		const h = 1.0 / ( top - bottom );
		const p = 1.0 / ( far - near );

const x = ( right + left ) * w;
		const y = ( top + bottom ) * h;
		const z = ( far + near ) * p;

te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;

return this;

}

equals( matrix ) {

const te = this.elements;
		const me = matrix.elements;

for ( let i = 0; i < 16; i ++ ) {

if ( te[ i ] !== me[ i ] ) return false;

}

return true;

}

fromArray( array, offset = 0 ) {

for ( let i = 0; i < 16; i ++ ) {

this.elements[ i ] = array[ i + offset ];

}

return this;

}

toArray( array = [], offset = 0 ) {

const te = this.elements;

array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];
		array[ offset + 3 ] = te[ 3 ];

array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];
		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];

array[ offset + 8 ] = te[ 8 ];
		array[ offset + 9 ] = te[ 9 ];
		array[ offset + 10 ] = te[ 10 ];
		array[ offset + 11 ] = te[ 11 ];

array[ offset + 12 ] = te[ 12 ];
		array[ offset + 13 ] = te[ 13 ];
		array[ offset + 14 ] = te[ 14 ];
		array[ offset + 15 ] = te[ 15 ];

return array;

}

const _v1$5 = /*@__PURE__*/ new Vector3();
const _m1$2 = /*@__PURE__*/ new Matrix4();
const _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );
const _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );
const _x = /*@__PURE__*/ new Vector3();
const _y = /*@__PURE__*/ new Vector3();
const _z = /*@__PURE__*/ new Vector3();

const _matrix = /*@__PURE__*/ new Matrix4();
const _quaternion$3 = /*@__PURE__*/ new Quaternion();

class Euler {

constructor( x = 0, y = 0, z = 0, order = Euler.DEFAULT_ORDER ) {

this.isEuler = true;

this._x = x;
		this._y = y;
		this._z = z;
		this._order = order;

}

get x() {

return this._x;

}

set x( value ) {

this._x = value;
		this._onChangeCallback();

}

get y() {

return this._y;

}

set y( value ) {

this._y = value;
		this._onChangeCallback();

}

get z() {

return this._z;

}

set z( value ) {

this._z = value;
		this._onChangeCallback();

}

get order() {

return this._order;

}

set order( value ) {

this._order = value;
		this._onChangeCallback();

}

set( x, y, z, order = this._order ) {

this._x = x;
		this._y = y;
		this._z = z;
		this._order = order;

this._onChangeCallback();

return this;

}

clone() {

return new this.constructor( this._x, this._y, this._z, this._order );

}

copy( euler ) {

this._x = euler._x;
		this._y = euler._y;
		this._z = euler._z;
		this._order = euler._order;

this._onChangeCallback();

return this;

}

setFromRotationMatrix( m, order = this._order, update = true ) {

// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

const te = m.elements;
		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

switch ( order ) {

case 'XYZ':

this._y = Math.asin( clamp( m13, - 1, 1 ) );

if ( Math.abs( m13 ) < 0.9999999 ) {

this._x = Math.atan2( - m23, m33 );
					this._z = Math.atan2( - m12, m11 );

} else {

this._x = Math.atan2( m32, m22 );
					this._z = 0;

}

break;

case 'YXZ':

this._x = Math.asin( - clamp( m23, - 1, 1 ) );

if ( Math.abs( m23 ) < 0.9999999 ) {

this._y = Math.atan2( m13, m33 );
					this._z = Math.atan2( m21, m22 );

} else {

this._y = Math.atan2( - m31, m11 );
					this._z = 0;

}

break;

case 'ZXY':

this._x = Math.asin( clamp( m32, - 1, 1 ) );

if ( Math.abs( m32 ) < 0.9999999 ) {

this._y = Math.atan2( - m31, m33 );
					this._z = Math.atan2( - m12, m22 );

} else {

this._y = 0;
					this._z = Math.atan2( m21, m11 );

}

break;

case 'ZYX':

this._y = Math.asin( - clamp( m31, - 1, 1 ) );

if ( Math.abs( m31 ) < 0.9999999 ) {

this._x = Math.atan2( m32, m33 );
					this._z = Math.atan2( m21, m11 );

} else {

this._x = 0;
					this._z = Math.atan2( - m12, m22 );

}

break;

case 'YZX':

this._z = Math.asin( clamp( m21, - 1, 1 ) );

if ( Math.abs( m21 ) < 0.9999999 ) {

this._x = Math.atan2( - m23, m22 );
					this._y = Math.atan2( - m31, m11 );

} else {

this._x = 0;
					this._y = Math.atan2( m13, m33 );

}

break;

case 'XZY':

this._z = Math.asin( - clamp( m12, - 1, 1 ) );

if ( Math.abs( m12 ) < 0.9999999 ) {

this._x = Math.atan2( m32, m22 );
					this._y = Math.atan2( m13, m11 );

} else {

this._x = Math.atan2( - m23, m33 );
					this._y = 0;

}

break;

default:

console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );

}

this._order = order;

if ( update === true ) this._onChangeCallback();

return this;

}

setFromQuaternion( q, order, update ) {

_matrix.makeRotationFromQuaternion( q );

return this.setFromRotationMatrix( _matrix, order, update );

}

setFromVector3( v, order = this._order ) {

return this.set( v.x, v.y, v.z, order );

}

reorder( newOrder ) {

// WARNING: this discards revolution information -bhouston

_quaternion$3.setFromEuler( this );

return this.setFromQuaternion( _quaternion$3, newOrder );

}

equals( euler ) {

return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );

}

fromArray( array ) {

this._x = array[ 0 ];
		this._y = array[ 1 ];
		this._z = array[ 2 ];
		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];

this._onChangeCallback();

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._order;

return array;

}

_onChange( callback ) {

this._onChangeCallback = callback;

return this;

}

_onChangeCallback() {}

*[ Symbol.iterator ]() {

yield this._x;
		yield this._y;
		yield this._z;
		yield this._order;

}

Euler.DEFAULT_ORDER = 'XYZ';

class Layers {

constructor() {

this.mask = 1 | 0;

}

set( channel ) {

this.mask = ( 1 << channel | 0 ) >>> 0;

}

enable( channel ) {

this.mask |= 1 << channel | 0;

}

enableAll() {

this.mask = 0xffffffff | 0;

}

toggle( channel ) {

this.mask ^= 1 << channel | 0;

}

disable( channel ) {

this.mask &= ~ ( 1 << channel | 0 );

}

disableAll() {

this.mask = 0;

}

test( layers ) {

return ( this.mask & layers.mask ) !== 0;

}

isEnabled( channel ) {

return ( this.mask & ( 1 << channel | 0 ) ) !== 0;

}

let _object3DId = 0;

const _v1$4 = /*@__PURE__*/ new Vector3();
const _q1 = /*@__PURE__*/ new Quaternion();
const _m1$1 = /*@__PURE__*/ new Matrix4();
const _target = /*@__PURE__*/ new Vector3();

const _position$3 = /*@__PURE__*/ new Vector3();
const _scale$2 = /*@__PURE__*/ new Vector3();
const _quaternion$2 = /*@__PURE__*/ new Quaternion();

const _xAxis = /*@__PURE__*/ new Vector3( 1, 0, 0 );
const _yAxis = /*@__PURE__*/ new Vector3( 0, 1, 0 );
const _zAxis = /*@__PURE__*/ new Vector3( 0, 0, 1 );

const _addedEvent = { type: 'added' };
const _removedEvent = { type: 'removed' };

class Object3D extends EventDispatcher {

constructor() {

super();

this.isObject3D = true;

Object.defineProperty( this, 'id', { value: _object3DId ++ } );

this.uuid = generateUUID();

this.name = '';
		this.type = 'Object3D';

this.parent = null;
		this.children = [];

this.up = Object3D.DEFAULT_UP.clone();

const position = new Vector3();
		const rotation = new Euler();
		const quaternion = new Quaternion();
		const scale = new Vector3( 1, 1, 1 );

function onRotationChange() {

quaternion.setFromEuler( rotation, false );

}

function onQuaternionChange() {

rotation.setFromQuaternion( quaternion, undefined, false );

}

rotation._onChange( onRotationChange );
		quaternion._onChange( onQuaternionChange );

Object.defineProperties( this, {
			position: {
				configurable: true,
				enumerable: true,
				value: position
			},
			rotation: {
				configurable: true,
				enumerable: true,
				value: rotation
			},
			quaternion: {
				configurable: true,
				enumerable: true,
				value: quaternion
			},
			scale: {
				configurable: true,
				enumerable: true,
				value: scale
			},
			modelViewMatrix: {
				value: new Matrix4()
			},
			normalMatrix: {
				value: new Matrix3()
			}
		} );

this.matrix = new Matrix4();
		this.matrixWorld = new Matrix4();

this.matrixAutoUpdate = Object3D.DEFAULT_MATRIX_AUTO_UPDATE;
		this.matrixWorldNeedsUpdate = false;

this.matrixWorldAutoUpdate = Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE; // checked by the renderer

this.layers = new Layers();
		this.visible = true;

this.castShadow = false;
		this.receiveShadow = false;

this.frustumCulled = true;
		this.renderOrder = 0;

this.animations = [];

this.userData = {};

}

onBeforeRender( /* renderer, scene, camera, geometry, material, group */ ) {}

onAfterRender( /* renderer, scene, camera, geometry, material, group */ ) {}

applyMatrix4( matrix ) {

if ( this.matrixAutoUpdate ) this.updateMatrix();

this.matrix.premultiply( matrix );

this.matrix.decompose( this.position, this.quaternion, this.scale );

}

applyQuaternion( q ) {

this.quaternion.premultiply( q );

return this;

}

setRotationFromAxisAngle( axis, angle ) {

// assumes axis is normalized

this.quaternion.setFromAxisAngle( axis, angle );

}

setRotationFromEuler( euler ) {

this.quaternion.setFromEuler( euler, true );

}

setRotationFromMatrix( m ) {

// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

this.quaternion.setFromRotationMatrix( m );

}

setRotationFromQuaternion( q ) {

// assumes q is normalized

this.quaternion.copy( q );

}

rotateOnAxis( axis, angle ) {

// rotate object on axis in object space
		// axis is assumed to be normalized

_q1.setFromAxisAngle( axis, angle );

this.quaternion.multiply( _q1 );

return this;

}

rotateOnWorldAxis( axis, angle ) {

// rotate object on axis in world space
		// axis is assumed to be normalized
		// method assumes no rotated parent

_q1.setFromAxisAngle( axis, angle );

this.quaternion.premultiply( _q1 );

return this;

}

rotateX( angle ) {

return this.rotateOnAxis( _xAxis, angle );

}

rotateY( angle ) {

return this.rotateOnAxis( _yAxis, angle );

}

rotateZ( angle ) {

return this.rotateOnAxis( _zAxis, angle );

}

translateOnAxis( axis, distance ) {

// translate object by distance along axis in object space
		// axis is assumed to be normalized

_v1$4.copy( axis ).applyQuaternion( this.quaternion );

this.position.add( _v1$4.multiplyScalar( distance ) );

return this;

}

translateX( distance ) {

return this.translateOnAxis( _xAxis, distance );

}

translateY( distance ) {

return this.translateOnAxis( _yAxis, distance );

}

translateZ( distance ) {

return this.translateOnAxis( _zAxis, distance );

}

localToWorld( vector ) {

this.updateWorldMatrix( true, false );

return vector.applyMatrix4( this.matrixWorld );

}

worldToLocal( vector ) {

this.updateWorldMatrix( true, false );

return vector.applyMatrix4( _m1$1.copy( this.matrixWorld ).invert() );

}

lookAt( x, y, z ) {

// This method does not support objects having non-uniformly-scaled parent(s)

if ( x.isVector3 ) {

_target.copy( x );

} else {

_target.set( x, y, z );

}

const parent = this.parent;

this.updateWorldMatrix( true, false );

_position$3.setFromMatrixPosition( this.matrixWorld );

if ( this.isCamera || this.isLight ) {

_m1$1.lookAt( _position$3, _target, this.up );

} else {

_m1$1.lookAt( _target, _position$3, this.up );

}

this.quaternion.setFromRotationMatrix( _m1$1 );

if ( parent ) {

_m1$1.extractRotation( parent.matrixWorld );
			_q1.setFromRotationMatrix( _m1$1 );
			this.quaternion.premultiply( _q1.invert() );

}

add( object ) {

if ( arguments.length > 1 ) {

for ( let i = 0; i < arguments.length; i ++ ) {

this.add( arguments[ i ] );

}

return this;

}

if ( object === this ) {

console.error( 'THREE.Object3D.add: object can\'t be added as a child of itself.', object );
			return this;

}

if ( object && object.isObject3D ) {

if ( object.parent !== null ) {

object.parent.remove( object );

}

object.parent = this;
			this.children.push( object );

object.dispatchEvent( _addedEvent );

} else {

console.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );

}

return this;

}

remove( object ) {

if ( arguments.length > 1 ) {

for ( let i = 0; i < arguments.length; i ++ ) {

this.remove( arguments[ i ] );

}

return this;

}

const index = this.children.indexOf( object );

if ( index !== - 1 ) {

object.parent = null;
			this.children.splice( index, 1 );

object.dispatchEvent( _removedEvent );

}

return this;

}

removeFromParent() {

const parent = this.parent;

if ( parent !== null ) {

parent.remove( this );

}

return this;

}

clear() {

for ( let i = 0; i < this.children.length; i ++ ) {

const object = this.children[ i ];

object.parent = null;

object.dispatchEvent( _removedEvent );

}

this.children.length = 0;

return this;

}

attach( object ) {

// adds object as a child of this, while maintaining the object's world transform

// Note: This method does not support scene graphs having non-uniformly-scaled nodes(s)

this.updateWorldMatrix( true, false );

_m1$1.copy( this.matrixWorld ).invert();

if ( object.parent !== null ) {

object.parent.updateWorldMatrix( true, false );

_m1$1.multiply( object.parent.matrixWorld );

}

object.applyMatrix4( _m1$1 );

this.add( object );

object.updateWorldMatrix( false, true );

return this;

}

getObjectById( id ) {

return this.getObjectByProperty( 'id', id );

}

getObjectByName( name ) {

return this.getObjectByProperty( 'name', name );

}

getObjectByProperty( name, value ) {

if ( this[ name ] === value ) return this;

for ( let i = 0, l = this.children.length; i < l; i ++ ) {

const child = this.children[ i ];
			const object = child.getObjectByProperty( name, value );

if ( object !== undefined ) {

return object;

}

return undefined;

}

getObjectsByProperty( name, value ) {

let result = [];

if ( this[ name ] === value ) result.push( this );

for ( let i = 0, l = this.children.length; i < l; i ++ ) {

const childResult = this.children[ i ].getObjectsByProperty( name, value );

if ( childResult.length > 0 ) {

result = result.concat( childResult );

}

return result;

}

getWorldPosition( target ) {

this.updateWorldMatrix( true, false );

return target.setFromMatrixPosition( this.matrixWorld );

}

getWorldQuaternion( target ) {

this.updateWorldMatrix( true, false );

this.matrixWorld.decompose( _position$3, target, _scale$2 );

return target;

}

getWorldScale( target ) {

this.updateWorldMatrix( true, false );

this.matrixWorld.decompose( _position$3, _quaternion$2, target );

return target;

}

getWorldDirection( target ) {

this.updateWorldMatrix( true, false );

const e = this.matrixWorld.elements;

return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();

}

raycast( /* raycaster, intersects */ ) {}

traverse( callback ) {

callback( this );

const children = this.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

children[ i ].traverse( callback );

}

traverseVisible( callback ) {

if ( this.visible === false ) return;

callback( this );

const children = this.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

children[ i ].traverseVisible( callback );

}

traverseAncestors( callback ) {

const parent = this.parent;

if ( parent !== null ) {

callback( parent );

parent.traverseAncestors( callback );

}

updateMatrix() {

this.matrix.compose( this.position, this.quaternion, this.scale );

this.matrixWorldNeedsUpdate = true;

}

updateMatrixWorld( force ) {

if ( this.matrixAutoUpdate ) this.updateMatrix();

if ( this.matrixWorldNeedsUpdate || force ) {

if ( this.parent === null ) {

this.matrixWorld.copy( this.matrix );

} else {

this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

}

this.matrixWorldNeedsUpdate = false;

force = true;

}

// update children

const children = this.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

const child = children[ i ];

if ( child.matrixWorldAutoUpdate === true || force === true ) {

child.updateMatrixWorld( force );

}

updateWorldMatrix( updateParents, updateChildren ) {

const parent = this.parent;

if ( updateParents === true && parent !== null && parent.matrixWorldAutoUpdate === true ) {

parent.updateWorldMatrix( true, false );

}

if ( this.matrixAutoUpdate ) this.updateMatrix();

if ( this.parent === null ) {

this.matrixWorld.copy( this.matrix );

} else {

this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

}

// update children

if ( updateChildren === true ) {

const children = this.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

const child = children[ i ];

if ( child.matrixWorldAutoUpdate === true ) {

child.updateWorldMatrix( false, true );

}

toJSON( meta ) {

// meta is a string when called from JSON.stringify
		const isRootObject = ( meta === undefined || typeof meta === 'string' );

const output = {};

// meta is a hash used to collect geometries, materials.
		// not providing it implies that this is the root object
		// being serialized.
		if ( isRootObject ) {

// initialize meta obj
			meta = {
				geometries: {},
				materials: {},
				textures: {},
				images: {},
				shapes: {},
				skeletons: {},
				animations: {},
				nodes: {}
			};

output.metadata = {
				version: 4.5,
				type: 'Object',
				generator: 'Object3D.toJSON'
			};

}

// standard Object3D serialization

const object = {};

object.uuid = this.uuid;
		object.type = this.type;

if ( this.name !== '' ) object.name = this.name;
		if ( this.castShadow === true ) object.castShadow = true;
		if ( this.receiveShadow === true ) object.receiveShadow = true;
		if ( this.visible === false ) object.visible = false;
		if ( this.frustumCulled === false ) object.frustumCulled = false;
		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
		if ( Object.keys( this.userData ).length > 0 ) object.userData = this.userData;

object.layers = this.layers.mask;
		object.matrix = this.matrix.toArray();
		object.up = this.up.toArray();

if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;

// object specific properties

if ( this.isInstancedMesh ) {

object.type = 'InstancedMesh';
			object.count = this.count;
			object.instanceMatrix = this.instanceMatrix.toJSON();
			if ( this.instanceColor !== null ) object.instanceColor = this.instanceColor.toJSON();

}

function serialize( library, element ) {

if ( library[ element.uuid ] === undefined ) {

library[ element.uuid ] = element.toJSON( meta );

}

return element.uuid;

}

if ( this.isScene ) {

if ( this.background ) {

if ( this.background.isColor ) {

object.background = this.background.toJSON();

} else if ( this.background.isTexture ) {

object.background = this.background.toJSON( meta ).uuid;

}

if ( this.environment && this.environment.isTexture && this.environment.isRenderTargetTexture !== true ) {

object.environment = this.environment.toJSON( meta ).uuid;

}

} else if ( this.isMesh || this.isLine || this.isPoints ) {

object.geometry = serialize( meta.geometries, this.geometry );

const parameters = this.geometry.parameters;

if ( parameters !== undefined && parameters.shapes !== undefined ) {

const shapes = parameters.shapes;

if ( Array.isArray( shapes ) ) {

for ( let i = 0, l = shapes.length; i < l; i ++ ) {

const shape = shapes[ i ];

serialize( meta.shapes, shape );

}

} else {

serialize( meta.shapes, shapes );

}

if ( this.isSkinnedMesh ) {

object.bindMode = this.bindMode;
			object.bindMatrix = this.bindMatrix.toArray();

if ( this.skeleton !== undefined ) {

serialize( meta.skeletons, this.skeleton );

object.skeleton = this.skeleton.uuid;

}

if ( this.material !== undefined ) {

if ( Array.isArray( this.material ) ) {

const uuids = [];

for ( let i = 0, l = this.material.length; i < l; i ++ ) {

uuids.push( serialize( meta.materials, this.material[ i ] ) );

}

object.material = uuids;

} else {

object.material = serialize( meta.materials, this.material );

}

if ( this.children.length > 0 ) {

object.children = [];

for ( let i = 0; i < this.children.length; i ++ ) {

object.children.push( this.children[ i ].toJSON( meta ).object );

}

if ( this.animations.length > 0 ) {

object.animations = [];

for ( let i = 0; i < this.animations.length; i ++ ) {

const animation = this.animations[ i ];

object.animations.push( serialize( meta.animations, animation ) );

}

if ( isRootObject ) {

const geometries = extractFromCache( meta.geometries );
			const materials = extractFromCache( meta.materials );
			const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );
			const shapes = extractFromCache( meta.shapes );
			const skeletons = extractFromCache( meta.skeletons );
			const animations = extractFromCache( meta.animations );
			const nodes = extractFromCache( meta.nodes );

if ( geometries.length > 0 ) output.geometries = geometries;
			if ( materials.length > 0 ) output.materials = materials;
			if ( textures.length > 0 ) output.textures = textures;
			if ( images.length > 0 ) output.images = images;
			if ( shapes.length > 0 ) output.shapes = shapes;
			if ( skeletons.length > 0 ) output.skeletons = skeletons;
			if ( animations.length > 0 ) output.animations = animations;
			if ( nodes.length > 0 ) output.nodes = nodes;

}

output.object = object;

return output;

// extract data from the cache hash
		// remove metadata on each item
		// and return as array
		function extractFromCache( cache ) {

const values = [];
			for ( const key in cache ) {

const data = cache[ key ];
				delete data.metadata;
				values.push( data );

}

return values;

}

clone( recursive ) {

return new this.constructor().copy( this, recursive );

}

copy( source, recursive = true ) {

this.name = source.name;

this.up.copy( source.up );

this.position.copy( source.position );
		this.rotation.order = source.rotation.order;
		this.quaternion.copy( source.quaternion );
		this.scale.copy( source.scale );

this.matrix.copy( source.matrix );
		this.matrixWorld.copy( source.matrixWorld );

this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;

this.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;

this.layers.mask = source.layers.mask;
		this.visible = source.visible;

this.castShadow = source.castShadow;
		this.receiveShadow = source.receiveShadow;

this.frustumCulled = source.frustumCulled;
		this.renderOrder = source.renderOrder;

this.userData = JSON.parse( JSON.stringify( source.userData ) );

if ( recursive === true ) {

for ( let i = 0; i < source.children.length; i ++ ) {

const child = source.children[ i ];
				this.add( child.clone() );

}

return this;

}

Object3D.DEFAULT_UP = /*@__PURE__*/ new Vector3( 0, 1, 0 );
Object3D.DEFAULT_MATRIX_AUTO_UPDATE = true;
Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE = true;

const _v0$1 = /*@__PURE__*/ new Vector3();
const _v1$3 = /*@__PURE__*/ new Vector3();
const _v2$2 = /*@__PURE__*/ new Vector3();
const _v3$1 = /*@__PURE__*/ new Vector3();

const _vab = /*@__PURE__*/ new Vector3();
const _vac = /*@__PURE__*/ new Vector3();
const _vbc = /*@__PURE__*/ new Vector3();
const _vap = /*@__PURE__*/ new Vector3();
const _vbp = /*@__PURE__*/ new Vector3();
const _vcp = /*@__PURE__*/ new Vector3();

let warnedGetUV = false;

class Triangle {

constructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {

this.a = a;
		this.b = b;
		this.c = c;

}

static getNormal( a, b, c, target ) {

target.subVectors( c, b );
		_v0$1.subVectors( a, b );
		target.cross( _v0$1 );

const targetLengthSq = target.lengthSq();
		if ( targetLengthSq > 0 ) {

return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );

}

return target.set( 0, 0, 0 );

}

// static/instance method to calculate barycentric coordinates
	// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
	static getBarycoord( point, a, b, c, target ) {

_v0$1.subVectors( c, a );
		_v1$3.subVectors( b, a );
		_v2$2.subVectors( point, a );

const dot00 = _v0$1.dot( _v0$1 );
		const dot01 = _v0$1.dot( _v1$3 );
		const dot02 = _v0$1.dot( _v2$2 );
		const dot11 = _v1$3.dot( _v1$3 );
		const dot12 = _v1$3.dot( _v2$2 );

const denom = ( dot00 * dot11 - dot01 * dot01 );

// collinear or singular triangle
		if ( denom === 0 ) {

// arbitrary location outside of triangle?
			// not sure if this is the best idea, maybe should be returning undefined
			return target.set( - 2, - 1, - 1 );

}

const invDenom = 1 / denom;
		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;

// barycentric coordinates must always sum to 1
		return target.set( 1 - u - v, v, u );

}

static containsPoint( point, a, b, c ) {

this.getBarycoord( point, a, b, c, _v3$1 );

return ( _v3$1.x >= 0 ) && ( _v3$1.y >= 0 ) && ( ( _v3$1.x + _v3$1.y ) <= 1 );

}

static getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) { // @deprecated, r151

if ( warnedGetUV === false ) {

console.warn( 'THREE.Triangle.getUV() has been renamed to THREE.Triangle.getInterpolation().' );

warnedGetUV = true;

}

return this.getInterpolation( point, p1, p2, p3, uv1, uv2, uv3, target );

}

static getInterpolation( point, p1, p2, p3, v1, v2, v3, target ) {

this.getBarycoord( point, p1, p2, p3, _v3$1 );

target.setScalar( 0 );
		target.addScaledVector( v1, _v3$1.x );
		target.addScaledVector( v2, _v3$1.y );
		target.addScaledVector( v3, _v3$1.z );

return target;

}

static isFrontFacing( a, b, c, direction ) {

_v0$1.subVectors( c, b );
		_v1$3.subVectors( a, b );

// strictly front facing
		return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;

}

set( a, b, c ) {

this.a.copy( a );
		this.b.copy( b );
		this.c.copy( c );

return this;

}

setFromPointsAndIndices( points, i0, i1, i2 ) {

this.a.copy( points[ i0 ] );
		this.b.copy( points[ i1 ] );
		this.c.copy( points[ i2 ] );

return this;

}

setFromAttributeAndIndices( attribute, i0, i1, i2 ) {

this.a.fromBufferAttribute( attribute, i0 );
		this.b.fromBufferAttribute( attribute, i1 );
		this.c.fromBufferAttribute( attribute, i2 );

return this;

}

clone() {

return new this.constructor().copy( this );

}

copy( triangle ) {

this.a.copy( triangle.a );
		this.b.copy( triangle.b );
		this.c.copy( triangle.c );

return this;

}

getArea() {

_v0$1.subVectors( this.c, this.b );
		_v1$3.subVectors( this.a, this.b );

return _v0$1.cross( _v1$3 ).length() * 0.5;

}

getMidpoint( target ) {

return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );

}

getNormal( target ) {

return Triangle.getNormal( this.a, this.b, this.c, target );

}

getPlane( target ) {

return target.setFromCoplanarPoints( this.a, this.b, this.c );

}

getBarycoord( point, target ) {

return Triangle.getBarycoord( point, this.a, this.b, this.c, target );

}

getUV( point, uv1, uv2, uv3, target ) { // @deprecated, r151

if ( warnedGetUV === false ) {

console.warn( 'THREE.Triangle.getUV() has been renamed to THREE.Triangle.getInterpolation().' );

warnedGetUV = true;

}

return Triangle.getInterpolation( point, this.a, this.b, this.c, uv1, uv2, uv3, target );

}

getInterpolation( point, v1, v2, v3, target ) {

return Triangle.getInterpolation( point, this.a, this.b, this.c, v1, v2, v3, target );

}

containsPoint( point ) {

return Triangle.containsPoint( point, this.a, this.b, this.c );

}

isFrontFacing( direction ) {

return Triangle.isFrontFacing( this.a, this.b, this.c, direction );

}

intersectsBox( box ) {

return box.intersectsTriangle( this );

}

closestPointToPoint( p, target ) {

const a = this.a, b = this.b, c = this.c;
		let v, w;

// algorithm thanks to Real-Time Collision Detection by Christer Ericson,
		// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
		// under the accompanying license; see chapter 5.1.5 for detailed explanation.
		// basically, we're distinguishing which of the voronoi regions of the triangle
		// the point lies in with the minimum amount of redundant computation.

_vab.subVectors( b, a );
		_vac.subVectors( c, a );
		_vap.subVectors( p, a );
		const d1 = _vab.dot( _vap );
		const d2 = _vac.dot( _vap );
		if ( d1 <= 0 && d2 <= 0 ) {

// vertex region of A; barycentric coords (1, 0, 0)
			return target.copy( a );

}

_vbp.subVectors( p, b );
		const d3 = _vab.dot( _vbp );
		const d4 = _vac.dot( _vbp );
		if ( d3 >= 0 && d4 <= d3 ) {

// vertex region of B; barycentric coords (0, 1, 0)
			return target.copy( b );

}

const vc = d1 * d4 - d3 * d2;
		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {

v = d1 / ( d1 - d3 );
			// edge region of AB; barycentric coords (1-v, v, 0)
			return target.copy( a ).addScaledVector( _vab, v );

}

_vcp.subVectors( p, c );
		const d5 = _vab.dot( _vcp );
		const d6 = _vac.dot( _vcp );
		if ( d6 >= 0 && d5 <= d6 ) {

// vertex region of C; barycentric coords (0, 0, 1)
			return target.copy( c );

}

const vb = d5 * d2 - d1 * d6;
		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {

w = d2 / ( d2 - d6 );
			// edge region of AC; barycentric coords (1-w, 0, w)
			return target.copy( a ).addScaledVector( _vac, w );

}

const va = d3 * d6 - d5 * d4;
		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {

_vbc.subVectors( c, b );
			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
			// edge region of BC; barycentric coords (0, 1-w, w)
			return target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC

}

// face region
		const denom = 1 / ( va + vb + vc );
		// u = va * denom
		v = vb * denom;
		w = vc * denom;

return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );

}

equals( triangle ) {

return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );

}

let materialId = 0;

class Material extends EventDispatcher {

constructor() {

super();

this.isMaterial = true;

Object.defineProperty( this, 'id', { value: materialId ++ } );

this.uuid = generateUUID();

this.name = '';
		this.type = 'Material';

this.blending = NormalBlending;
		this.side = FrontSide;
		this.vertexColors = false;

this.opacity = 1;
		this.transparent = false;

this.blendSrc = SrcAlphaFactor;
		this.blendDst = OneMinusSrcAlphaFactor;
		this.blendEquation = AddEquation;
		this.blendSrcAlpha = null;
		this.blendDstAlpha = null;
		this.blendEquationAlpha = null;

this.depthFunc = LessEqualDepth;
		this.depthTest = true;
		this.depthWrite = true;

this.stencilWriteMask = 0xff;
		this.stencilFunc = AlwaysStencilFunc;
		this.stencilRef = 0;
		this.stencilFuncMask = 0xff;
		this.stencilFail = KeepStencilOp;
		this.stencilZFail = KeepStencilOp;
		this.stencilZPass = KeepStencilOp;
		this.stencilWrite = false;

this.clippingPlanes = null;
		this.clipIntersection = false;
		this.clipShadows = false;

this.shadowSide = null;

this.colorWrite = true;

this.precision = null; // override the renderer's default precision for this material

this.polygonOffset = false;
		this.polygonOffsetFactor = 0;
		this.polygonOffsetUnits = 0;

this.dithering = false;

this.alphaToCoverage = false;
		this.premultipliedAlpha = false;
		this.forceSinglePass = false;

this.visible = true;

this.toneMapped = true;

this.userData = {};

this.version = 0;

this._alphaTest = 0;

}

get alphaTest() {

return this._alphaTest;

}

set alphaTest( value ) {

if ( this._alphaTest > 0 !== value > 0 ) {

this.version ++;

}

this._alphaTest = value;

}

onBuild( /* shaderobject, renderer */ ) {}

onBeforeRender( /* renderer, scene, camera, geometry, object, group */ ) {}

onBeforeCompile( /* shaderobject, renderer */ ) {}

customProgramCacheKey() {

return this.onBeforeCompile.toString();

}

setValues( values ) {

if ( values === undefined ) return;

for ( const key in values ) {

const newValue = values[ key ];

if ( newValue === undefined ) {

console.warn( `THREE.Material: parameter '${ key }' has value of undefined.` );
				continue;

}

const currentValue = this[ key ];

if ( currentValue === undefined ) {

console.warn( `THREE.Material: '${ key }' is not a property of THREE.${ this.type }.` );
				continue;

}

if ( currentValue && currentValue.isColor ) {

currentValue.set( newValue );

} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {

currentValue.copy( newValue );

} else {

this[ key ] = newValue;

}

toJSON( meta ) {

const isRootObject = ( meta === undefined || typeof meta === 'string' );

if ( isRootObject ) {

meta = {
				textures: {},
				images: {}
			};

}

const data = {
			metadata: {
				version: 4.5,
				type: 'Material',
				generator: 'Material.toJSON'
			}
		};

// standard Material serialization
		data.uuid = this.uuid;
		data.type = this.type;

if ( this.name !== '' ) data.name = this.name;

if ( this.color && this.color.isColor ) data.color = this.color.getHex();

if ( this.roughness !== undefined ) data.roughness = this.roughness;
		if ( this.metalness !== undefined ) data.metalness = this.metalness;

if ( this.sheen !== undefined ) data.sheen = this.sheen;
		if ( this.sheenColor && this.sheenColor.isColor ) data.sheenColor = this.sheenColor.getHex();
		if ( this.sheenRoughness !== undefined ) data.sheenRoughness = this.sheenRoughness;
		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
		if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;

if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
		if ( this.specularIntensity !== undefined ) data.specularIntensity = this.specularIntensity;
		if ( this.specularColor && this.specularColor.isColor ) data.specularColor = this.specularColor.getHex();
		if ( this.shininess !== undefined ) data.shininess = this.shininess;
		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;

if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {

data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;

}

if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {

data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;

}

if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {

data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();

}

if ( this.iridescence !== undefined ) data.iridescence = this.iridescence;
		if ( this.iridescenceIOR !== undefined ) data.iridescenceIOR = this.iridescenceIOR;
		if ( this.iridescenceThicknessRange !== undefined ) data.iridescenceThicknessRange = this.iridescenceThicknessRange;

if ( this.iridescenceMap && this.iridescenceMap.isTexture ) {

data.iridescenceMap = this.iridescenceMap.toJSON( meta ).uuid;

}

if ( this.iridescenceThicknessMap && this.iridescenceThicknessMap.isTexture ) {

data.iridescenceThicknessMap = this.iridescenceThicknessMap.toJSON( meta ).uuid;

}

if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;

if ( this.lightMap && this.lightMap.isTexture ) {

data.lightMap = this.lightMap.toJSON( meta ).uuid;
			data.lightMapIntensity = this.lightMapIntensity;

}

if ( this.aoMap && this.aoMap.isTexture ) {

data.aoMap = this.aoMap.toJSON( meta ).uuid;
			data.aoMapIntensity = this.aoMapIntensity;

}

if ( this.bumpMap && this.bumpMap.isTexture ) {

data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
			data.bumpScale = this.bumpScale;

}

if ( this.normalMap && this.normalMap.isTexture ) {

data.normalMap = this.normalMap.toJSON( meta ).uuid;
			data.normalMapType = this.normalMapType;
			data.normalScale = this.normalScale.toArray();

}

if ( this.displacementMap && this.displacementMap.isTexture ) {

data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
			data.displacementScale = this.displacementScale;
			data.displacementBias = this.displacementBias;

}

if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;

if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
		if ( this.specularIntensityMap && this.specularIntensityMap.isTexture ) data.specularIntensityMap = this.specularIntensityMap.toJSON( meta ).uuid;
		if ( this.specularColorMap && this.specularColorMap.isTexture ) data.specularColorMap = this.specularColorMap.toJSON( meta ).uuid;

if ( this.envMap && this.envMap.isTexture ) {

data.envMap = this.envMap.toJSON( meta ).uuid;

if ( this.combine !== undefined ) data.combine = this.combine;

}

if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
		if ( this.reflectivity !== undefined ) data.reflectivity = this.reflectivity;
		if ( this.refractionRatio !== undefined ) data.refractionRatio = this.refractionRatio;

if ( this.gradientMap && this.gradientMap.isTexture ) {

data.gradientMap = this.gradientMap.toJSON( meta ).uuid;

}

if ( this.transmission !== undefined ) data.transmission = this.transmission;
		if ( this.transmissionMap && this.transmissionMap.isTexture ) data.transmissionMap = this.transmissionMap.toJSON( meta ).uuid;
		if ( this.thickness !== undefined ) data.thickness = this.thickness;
		if ( this.thicknessMap && this.thicknessMap.isTexture ) data.thicknessMap = this.thicknessMap.toJSON( meta ).uuid;
		if ( this.attenuationDistance !== undefined && this.attenuationDistance !== Infinity ) data.attenuationDistance = this.attenuationDistance;
		if ( this.attenuationColor !== undefined ) data.attenuationColor = this.attenuationColor.getHex();

if ( this.size !== undefined ) data.size = this.size;
		if ( this.shadowSide !== null ) data.shadowSide = this.shadowSide;
		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;

if ( this.blending !== NormalBlending ) data.blending = this.blending;
		if ( this.side !== FrontSide ) data.side = this.side;
		if ( this.vertexColors ) data.vertexColors = true;

if ( this.opacity < 1 ) data.opacity = this.opacity;
		if ( this.transparent === true ) data.transparent = this.transparent;

data.depthFunc = this.depthFunc;
		data.depthTest = this.depthTest;
		data.depthWrite = this.depthWrite;
		data.colorWrite = this.colorWrite;

data.stencilWrite = this.stencilWrite;
		data.stencilWriteMask = this.stencilWriteMask;
		data.stencilFunc = this.stencilFunc;
		data.stencilRef = this.stencilRef;
		data.stencilFuncMask = this.stencilFuncMask;
		data.stencilFail = this.stencilFail;
		data.stencilZFail = this.stencilZFail;
		data.stencilZPass = this.stencilZPass;

// rotation (SpriteMaterial)
		if ( this.rotation !== undefined && this.rotation !== 0 ) data.rotation = this.rotation;

if ( this.polygonOffset === true ) data.polygonOffset = true;
		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;

if ( this.linewidth !== undefined && this.linewidth !== 1 ) data.linewidth = this.linewidth;
		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
		if ( this.scale !== undefined ) data.scale = this.scale;

if ( this.dithering === true ) data.dithering = true;

if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
		if ( this.alphaToCoverage === true ) data.alphaToCoverage = this.alphaToCoverage;
		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;
		if ( this.forceSinglePass === true ) data.forceSinglePass = this.forceSinglePass;

if ( this.wireframe === true ) data.wireframe = this.wireframe;
		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;

if ( this.flatShading === true ) data.flatShading = this.flatShading;

if ( this.visible === false ) data.visible = false;

if ( this.toneMapped === false ) data.toneMapped = false;

if ( this.fog === false ) data.fog = false;

if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;

// TODO: Copied from Object3D.toJSON

function extractFromCache( cache ) {

const values = [];

for ( const key in cache ) {

const data = cache[ key ];
				delete data.metadata;
				values.push( data );

}

return values;

}

if ( isRootObject ) {

const textures = extractFromCache( meta.textures );
			const images = extractFromCache( meta.images );

if ( textures.length > 0 ) data.textures = textures;
			if ( images.length > 0 ) data.images = images;

}

return data;

}

clone() {

return new this.constructor().copy( this );

}

copy( source ) {

this.name = source.name;

this.blending = source.blending;
		this.side = source.side;
		this.vertexColors = source.vertexColors;

this.opacity = source.opacity;
		this.transparent = source.transparent;

this.blendSrc = source.blendSrc;
		this.blendDst = source.blendDst;
		this.blendEquation = source.blendEquation;
		this.blendSrcAlpha = source.blendSrcAlpha;
		this.blendDstAlpha = source.blendDstAlpha;
		this.blendEquationAlpha = source.blendEquationAlpha;

this.depthFunc = source.depthFunc;
		this.depthTest = source.depthTest;
		this.depthWrite = source.depthWrite;

this.stencilWriteMask = source.stencilWriteMask;
		this.stencilFunc = source.stencilFunc;
		this.stencilRef = source.stencilRef;
		this.stencilFuncMask = source.stencilFuncMask;
		this.stencilFail = source.stencilFail;
		this.stencilZFail = source.stencilZFail;
		this.stencilZPass = source.stencilZPass;
		this.stencilWrite = source.stencilWrite;

const srcPlanes = source.clippingPlanes;
		let dstPlanes = null;

if ( srcPlanes !== null ) {

const n = srcPlanes.length;
			dstPlanes = new Array( n );

for ( let i = 0; i !== n; ++ i ) {

dstPlanes[ i ] = srcPlanes[ i ].clone();

}

this.clippingPlanes = dstPlanes;
		this.clipIntersection = source.clipIntersection;
		this.clipShadows = source.clipShadows;

this.shadowSide = source.shadowSide;

this.colorWrite = source.colorWrite;

this.precision = source.precision;

this.polygonOffset = source.polygonOffset;
		this.polygonOffsetFactor = source.polygonOffsetFactor;
		this.polygonOffsetUnits = source.polygonOffsetUnits;

this.dithering = source.dithering;

this.alphaTest = source.alphaTest;
		this.alphaToCoverage = source.alphaToCoverage;
		this.premultipliedAlpha = source.premultipliedAlpha;
		this.forceSinglePass = source.forceSinglePass;

this.visible = source.visible;

this.toneMapped = source.toneMapped;

this.userData = JSON.parse( JSON.stringify( source.userData ) );

return this;

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

}

set needsUpdate( value ) {

if ( value === true ) this.version ++;

}

const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };

const _hslA = { h: 0, s: 0, l: 0 };
const _hslB = { h: 0, s: 0, l: 0 };

function hue2rgb( p, q, t ) {

if ( t < 0 ) t += 1;
	if ( t > 1 ) t -= 1;
	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
	if ( t < 1 / 2 ) return q;
	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
	return p;

}

class Color {

constructor( r, g, b ) {

this.isColor = true;

this.r = 1;
		this.g = 1;
		this.b = 1;

if ( g === undefined && b === undefined ) {

// r is THREE.Color, hex or string
			return this.set( r );

}

return this.setRGB( r, g, b );

}

set( value ) {

if ( value && value.isColor ) {

this.copy( value );

} else if ( typeof value === 'number' ) {

this.setHex( value );

} else if ( typeof value === 'string' ) {

this.setStyle( value );

}

return this;

}

setScalar( scalar ) {

this.r = scalar;
		this.g = scalar;
		this.b = scalar;

return this;

}

setHex( hex, colorSpace = SRGBColorSpace ) {

hex = Math.floor( hex );

this.r = ( hex >> 16 & 255 ) / 255;
		this.g = ( hex >> 8 & 255 ) / 255;
		this.b = ( hex & 255 ) / 255;

ColorManagement.toWorkingColorSpace( this, colorSpace );

return this;

}

setRGB( r, g, b, colorSpace = ColorManagement.workingColorSpace ) {

this.r = r;
		this.g = g;
		this.b = b;

ColorManagement.toWorkingColorSpace( this, colorSpace );

return this;

}

setHSL( h, s, l, colorSpace = ColorManagement.workingColorSpace ) {

// h,s,l ranges are in 0.0 - 1.0
		h = euclideanModulo( h, 1 );
		s = clamp( s, 0, 1 );
		l = clamp( l, 0, 1 );

if ( s === 0 ) {

this.r = this.g = this.b = l;

} else {

const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
			const q = ( 2 * l ) - p;

this.r = hue2rgb( q, p, h + 1 / 3 );
			this.g = hue2rgb( q, p, h );
			this.b = hue2rgb( q, p, h - 1 / 3 );

}

ColorManagement.toWorkingColorSpace( this, colorSpace );

return this;

}

setStyle( style, colorSpace = SRGBColorSpace ) {

function handleAlpha( string ) {

if ( string === undefined ) return;

if ( parseFloat( string ) < 1 ) {

console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );

}

let m;

if ( m = /^(\w+)$([^$]*)\)/.exec( style ) ) {

// rgb / hsl

let color;
			const name = m[ 1 ];
			const components = m[ 2 ];

switch ( name ) {

case 'rgb':
				case 'rgba':

if ( color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

// rgb(255,0,0) rgba(255,0,0,0.5)
						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;

ColorManagement.toWorkingColorSpace( this, colorSpace );

handleAlpha( color[ 4 ] );

return this;

}

if ( color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;

ColorManagement.toWorkingColorSpace( this, colorSpace );

handleAlpha( color[ 4 ] );

return this;

}

break;

case 'hsl':
				case 'hsla':

if ( color = /^\s*(\d*\.?\d+)\s*,\s*(\d*\.?\d+)\%\s*,\s*(\d*\.?\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {

// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
						const h = parseFloat( color[ 1 ] ) / 360;
						const s = parseFloat( color[ 2 ] ) / 100;
						const l = parseFloat( color[ 3 ] ) / 100;

handleAlpha( color[ 4 ] );

return this.setHSL( h, s, l, colorSpace );

}

break;

default:

console.warn( 'THREE.Color: Unknown color model ' + style );

}

} else if ( m = /^\#([A-Fa-f\d]+)$/.exec( style ) ) {

// hex color

const hex = m[ 1 ];
			const size = hex.length;

if ( size === 3 ) {

// #ff0
				return this.setRGB(
					parseInt( hex.charAt( 0 ), 16 ) / 15,
					parseInt( hex.charAt( 1 ), 16 ) / 15,
					parseInt( hex.charAt( 2 ), 16 ) / 15,
					colorSpace
				);

} else if ( size === 6 ) {

// #ff0000
				return this.setHex( parseInt( hex, 16 ), colorSpace );

} else {

console.warn( 'THREE.Color: Invalid hex color ' + style );

}

} else if ( style && style.length > 0 ) {

return this.setColorName( style, colorSpace );

}

return this;

}

setColorName( style, colorSpace = SRGBColorSpace ) {

// color keywords
		const hex = _colorKeywords[ style.toLowerCase() ];

if ( hex !== undefined ) {

// red
			this.setHex( hex, colorSpace );

} else {

// unknown color
			console.warn( 'THREE.Color: Unknown color ' + style );

}

return this;

}

clone() {

return new this.constructor( this.r, this.g, this.b );

}

copy( color ) {

this.r = color.r;
		this.g = color.g;
		this.b = color.b;

return this;

}

copySRGBToLinear( color ) {

this.r = SRGBToLinear( color.r );
		this.g = SRGBToLinear( color.g );
		this.b = SRGBToLinear( color.b );

return this;

}

copyLinearToSRGB( color ) {

this.r = LinearToSRGB( color.r );
		this.g = LinearToSRGB( color.g );
		this.b = LinearToSRGB( color.b );

return this;

}

convertSRGBToLinear() {

this.copySRGBToLinear( this );

return this;

}

convertLinearToSRGB() {

this.copyLinearToSRGB( this );

return this;

}

getHex( colorSpace = SRGBColorSpace ) {

ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );

return clamp( _color.r * 255, 0, 255 ) << 16 ^ clamp( _color.g * 255, 0, 255 ) << 8 ^ clamp( _color.b * 255, 0, 255 ) << 0;

}

getHexString( colorSpace = SRGBColorSpace ) {

return ( '000000' + this.getHex( colorSpace ).toString( 16 ) ).slice( - 6 );

}

getHSL( target, colorSpace = ColorManagement.workingColorSpace ) {

// h,s,l ranges are in 0.0 - 1.0

ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );

const r = _color.r, g = _color.g, b = _color.b;

const max = Math.max( r, g, b );
		const min = Math.min( r, g, b );

let hue, saturation;
		const lightness = ( min + max ) / 2.0;

if ( min === max ) {

hue = 0;
			saturation = 0;

} else {

const delta = max - min;

saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );

switch ( max ) {

case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
				case g: hue = ( b - r ) / delta + 2; break;
				case b: hue = ( r - g ) / delta + 4; break;

}

hue /= 6;

}

target.h = hue;
		target.s = saturation;
		target.l = lightness;

return target;

}

getRGB( target, colorSpace = ColorManagement.workingColorSpace ) {

ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );

target.r = _color.r;
		target.g = _color.g;
		target.b = _color.b;

return target;

}

getStyle( colorSpace = SRGBColorSpace ) {

ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );

const r = _color.r, g = _color.g, b = _color.b;

if ( colorSpace !== SRGBColorSpace ) {

// Requires CSS Color Module Level 4 (https://www.w3.org/TR/css-color-4/).
			return `color(${ colorSpace } ${ r.toFixed( 3 ) } ${ g.toFixed( 3 ) } ${ b.toFixed( 3 ) })`;

}

return `rgb(${( r * 255 ) | 0},${( g * 255 ) | 0},${( b * 255 ) | 0})`;

}

offsetHSL( h, s, l ) {

this.getHSL( _hslA );

_hslA.h += h; _hslA.s += s; _hslA.l += l;

this.setHSL( _hslA.h, _hslA.s, _hslA.l );

return this;

}

add( color ) {

this.r += color.r;
		this.g += color.g;
		this.b += color.b;

return this;

}

addColors( color1, color2 ) {

this.r = color1.r + color2.r;
		this.g = color1.g + color2.g;
		this.b = color1.b + color2.b;

return this;

}

addScalar( s ) {

this.r += s;
		this.g += s;
		this.b += s;

return this;

}

sub( color ) {

this.r = Math.max( 0, this.r - color.r );
		this.g = Math.max( 0, this.g - color.g );
		this.b = Math.max( 0, this.b - color.b );

return this;

}

multiply( color ) {

this.r *= color.r;
		this.g *= color.g;
		this.b *= color.b;

return this;

}

multiplyScalar( s ) {

this.r *= s;
		this.g *= s;
		this.b *= s;

return this;

}

lerp( color, alpha ) {

this.r += ( color.r - this.r ) * alpha;
		this.g += ( color.g - this.g ) * alpha;
		this.b += ( color.b - this.b ) * alpha;

return this;

}

lerpColors( color1, color2, alpha ) {

this.r = color1.r + ( color2.r - color1.r ) * alpha;
		this.g = color1.g + ( color2.g - color1.g ) * alpha;
		this.b = color1.b + ( color2.b - color1.b ) * alpha;

return this;

}

lerpHSL( color, alpha ) {

this.getHSL( _hslA );
		color.getHSL( _hslB );

const h = lerp( _hslA.h, _hslB.h, alpha );
		const s = lerp( _hslA.s, _hslB.s, alpha );
		const l = lerp( _hslA.l, _hslB.l, alpha );

this.setHSL( h, s, l );

return this;

}

setFromVector3( v ) {

this.r = v.x;
		this.g = v.y;
		this.b = v.z;

return this;

}

applyMatrix3( m ) {

const r = this.r, g = this.g, b = this.b;
		const e = m.elements;

this.r = e[ 0 ] * r + e[ 3 ] * g + e[ 6 ] * b;
		this.g = e[ 1 ] * r + e[ 4 ] * g + e[ 7 ] * b;
		this.b = e[ 2 ] * r + e[ 5 ] * g + e[ 8 ] * b;

return this;

}

equals( c ) {

return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );

}

fromArray( array, offset = 0 ) {

this.r = array[ offset ];
		this.g = array[ offset + 1 ];
		this.b = array[ offset + 2 ];

return this;

}

toArray( array = [], offset = 0 ) {

array[ offset ] = this.r;
		array[ offset + 1 ] = this.g;
		array[ offset + 2 ] = this.b;

return array;

}

fromBufferAttribute( attribute, index ) {

this.r = attribute.getX( index );
		this.g = attribute.getY( index );
		this.b = attribute.getZ( index );

return this;

}

toJSON() {

return this.getHex();

}

*[ Symbol.iterator ]() {

yield this.r;
		yield this.g;
		yield this.b;

}

const _color = /*@__PURE__*/ new Color();

Color.NAMES = _colorKeywords;

class MeshBasicMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshBasicMaterial = true;

this.type = 'MeshBasicMaterial';

this.color = new Color( 0xffffff ); // emissive

this.map = null;

this.lightMap = null;
		this.lightMapIntensity = 1.0;

this.aoMap = null;
		this.aoMapIntensity = 1.0;

this.specularMap = null;

this.alphaMap = null;

this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;

this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

this.specularMap = source.specularMap;

this.alphaMap = source.alphaMap;

this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

this.fog = source.fog;

return this;

}

// Fast Half Float Conversions, http://www.fox-toolkit.org/ftp/fasthalffloatconversion.pdf

const _tables = /*@__PURE__*/ _generateTables();

function _generateTables() {

// float32 to float16 helpers

const buffer = new ArrayBuffer( 4 );
	const floatView = new Float32Array( buffer );
	const uint32View = new Uint32Array( buffer );

const baseTable = new Uint32Array( 512 );
	const shiftTable = new Uint32Array( 512 );

for ( let i = 0; i < 256; ++ i ) {

const e = i - 127;

// very small number (0, -0)

if ( e < - 27 ) {

baseTable[ i ] = 0x0000;
			baseTable[ i | 0x100 ] = 0x8000;
			shiftTable[ i ] = 24;
			shiftTable[ i | 0x100 ] = 24;

// small number (denorm)

} else if ( e < - 14 ) {

baseTable[ i ] = 0x0400 >> ( - e - 14 );
			baseTable[ i | 0x100 ] = ( 0x0400 >> ( - e - 14 ) ) | 0x8000;
			shiftTable[ i ] = - e - 1;
			shiftTable[ i | 0x100 ] = - e - 1;

// normal number

} else if ( e <= 15 ) {

baseTable[ i ] = ( e + 15 ) << 10;
			baseTable[ i | 0x100 ] = ( ( e + 15 ) << 10 ) | 0x8000;
			shiftTable[ i ] = 13;
			shiftTable[ i | 0x100 ] = 13;

// large number (Infinity, -Infinity)

} else if ( e < 128 ) {

baseTable[ i ] = 0x7c00;
			baseTable[ i | 0x100 ] = 0xfc00;
			shiftTable[ i ] = 24;
			shiftTable[ i | 0x100 ] = 24;

// stay (NaN, Infinity, -Infinity)

} else {

baseTable[ i ] = 0x7c00;
			baseTable[ i | 0x100 ] = 0xfc00;
			shiftTable[ i ] = 13;
			shiftTable[ i | 0x100 ] = 13;

}

// float16 to float32 helpers

const mantissaTable = new Uint32Array( 2048 );
	const exponentTable = new Uint32Array( 64 );
	const offsetTable = new Uint32Array( 64 );

for ( let i = 1; i < 1024; ++ i ) {

let m = i << 13; // zero pad mantissa bits
		let e = 0; // zero exponent

// normalized
		while ( ( m & 0x00800000 ) === 0 ) {

m <<= 1;
			e -= 0x00800000; // decrement exponent

}

m &= ~ 0x00800000; // clear leading 1 bit
		e += 0x38800000; // adjust bias

mantissaTable[ i ] = m | e;

}

for ( let i = 1024; i < 2048; ++ i ) {

mantissaTable[ i ] = 0x38000000 + ( ( i - 1024 ) << 13 );

}

for ( let i = 1; i < 31; ++ i ) {

exponentTable[ i ] = i << 23;

}

exponentTable[ 31 ] = 0x47800000;
	exponentTable[ 32 ] = 0x80000000;

for ( let i = 33; i < 63; ++ i ) {

exponentTable[ i ] = 0x80000000 + ( ( i - 32 ) << 23 );

}

exponentTable[ 63 ] = 0xc7800000;

for ( let i = 1; i < 64; ++ i ) {

if ( i !== 32 ) {

offsetTable[ i ] = 1024;

}

return {
		floatView: floatView,
		uint32View: uint32View,
		baseTable: baseTable,
		shiftTable: shiftTable,
		mantissaTable: mantissaTable,
		exponentTable: exponentTable,
		offsetTable: offsetTable
	};

}

// float32 to float16

function toHalfFloat( val ) {

if ( Math.abs( val ) > 65504 ) console.warn( 'THREE.DataUtils.toHalfFloat(): Value out of range.' );

val = clamp( val, - 65504, 65504 );

_tables.floatView[ 0 ] = val;
	const f = _tables.uint32View[ 0 ];
	const e = ( f >> 23 ) & 0x1ff;
	return _tables.baseTable[ e ] + ( ( f & 0x007fffff ) >> _tables.shiftTable[ e ] );

}

// float16 to float32

function fromHalfFloat( val ) {

const m = val >> 10;
	_tables.uint32View[ 0 ] = _tables.mantissaTable[ _tables.offsetTable[ m ] + ( val & 0x3ff ) ] + _tables.exponentTable[ m ];
	return _tables.floatView[ 0 ];

}

const DataUtils = {
	toHalfFloat: toHalfFloat,
	fromHalfFloat: fromHalfFloat,
};

const _vector$8 = /*@__PURE__*/ new Vector3();
const _vector2$1 = /*@__PURE__*/ new Vector2();

class BufferAttribute {

constructor( array, itemSize, normalized = false ) {

if ( Array.isArray( array ) ) {

throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );

}

this.isBufferAttribute = true;

this.name = '';

this.array = array;
		this.itemSize = itemSize;
		this.count = array !== undefined ? array.length / itemSize : 0;
		this.normalized = normalized;

this.usage = StaticDrawUsage;
		this.updateRange = { offset: 0, count: - 1 };

this.version = 0;

}

onUploadCallback() {}

set needsUpdate( value ) {

if ( value === true ) this.version ++;

}

setUsage( value ) {

this.usage = value;

return this;

}

copy( source ) {

this.name = source.name;
		this.array = new source.array.constructor( source.array );
		this.itemSize = source.itemSize;
		this.count = source.count;
		this.normalized = source.normalized;

this.usage = source.usage;

return this;

}

copyAt( index1, attribute, index2 ) {

index1 *= this.itemSize;
		index2 *= attribute.itemSize;

for ( let i = 0, l = this.itemSize; i < l; i ++ ) {

this.array[ index1 + i ] = attribute.array[ index2 + i ];

}

return this;

}

copyArray( array ) {

this.array.set( array );

return this;

}

applyMatrix3( m ) {

if ( this.itemSize === 2 ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector2$1.fromBufferAttribute( this, i );
				_vector2$1.applyMatrix3( m );

this.setXY( i, _vector2$1.x, _vector2$1.y );

}

} else if ( this.itemSize === 3 ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$8.fromBufferAttribute( this, i );
				_vector$8.applyMatrix3( m );

this.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

}

return this;

}

applyMatrix4( m ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$8.fromBufferAttribute( this, i );

_vector$8.applyMatrix4( m );

this.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

}

return this;

}

applyNormalMatrix( m ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$8.fromBufferAttribute( this, i );

_vector$8.applyNormalMatrix( m );

this.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

}

return this;

}

transformDirection( m ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$8.fromBufferAttribute( this, i );

_vector$8.transformDirection( m );

this.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );

}

return this;

}

set( value, offset = 0 ) {

// Matching BufferAttribute constructor, do not normalize the array.
		this.array.set( value, offset );

return this;

}

getX( index ) {

let x = this.array[ index * this.itemSize ];

if ( this.normalized ) x = denormalize( x, this.array );

return x;

}

setX( index, x ) {

if ( this.normalized ) x = normalize( x, this.array );

this.array[ index * this.itemSize ] = x;

return this;

}

getY( index ) {

let y = this.array[ index * this.itemSize + 1 ];

if ( this.normalized ) y = denormalize( y, this.array );

return y;

}

setY( index, y ) {

if ( this.normalized ) y = normalize( y, this.array );

this.array[ index * this.itemSize + 1 ] = y;

return this;

}

getZ( index ) {

let z = this.array[ index * this.itemSize + 2 ];

if ( this.normalized ) z = denormalize( z, this.array );

return z;

}

setZ( index, z ) {

if ( this.normalized ) z = normalize( z, this.array );

this.array[ index * this.itemSize + 2 ] = z;

return this;

}

getW( index ) {

let w = this.array[ index * this.itemSize + 3 ];

if ( this.normalized ) w = denormalize( w, this.array );

return w;

}

setW( index, w ) {

if ( this.normalized ) w = normalize( w, this.array );

this.array[ index * this.itemSize + 3 ] = w;

return this;

}

setXY( index, x, y ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );

}

this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;

return this;

}

setXYZ( index, x, y, z ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );

}

this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;

return this;

}

setXYZW( index, x, y, z, w ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );
			w = normalize( w, this.array );

}

this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;
		this.array[ index + 3 ] = w;

return this;

}

onUpload( callback ) {

this.onUploadCallback = callback;

return this;

}

clone() {

return new this.constructor( this.array, this.itemSize ).copy( this );

}

toJSON() {

const data = {
			itemSize: this.itemSize,
			type: this.array.constructor.name,
			array: Array.from( this.array ),
			normalized: this.normalized
		};

if ( this.name !== '' ) data.name = this.name;
		if ( this.usage !== StaticDrawUsage ) data.usage = this.usage;
		if ( this.updateRange.offset !== 0 || this.updateRange.count !== - 1 ) data.updateRange = this.updateRange;

return data;

}

copyColorsArray() { // @deprecated, r144

console.error( 'THREE.BufferAttribute: copyColorsArray() was removed in r144.' );

}

copyVector2sArray() { // @deprecated, r144

console.error( 'THREE.BufferAttribute: copyVector2sArray() was removed in r144.' );

}

copyVector3sArray() { // @deprecated, r144

console.error( 'THREE.BufferAttribute: copyVector3sArray() was removed in r144.' );

}

copyVector4sArray() { // @deprecated, r144

console.error( 'THREE.BufferAttribute: copyVector4sArray() was removed in r144.' );

}

class Int8BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Int8Array( array ), itemSize, normalized );

}

class Uint8BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Uint8Array( array ), itemSize, normalized );

}

class Uint8ClampedBufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Uint8ClampedArray( array ), itemSize, normalized );

}

class Int16BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Int16Array( array ), itemSize, normalized );

}

class Uint16BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Uint16Array( array ), itemSize, normalized );

}

class Int32BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Int32Array( array ), itemSize, normalized );

}

class Uint32BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Uint32Array( array ), itemSize, normalized );

}

class Float16BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Uint16Array( array ), itemSize, normalized );

this.isFloat16BufferAttribute = true;

}

getX( index ) {

let x = fromHalfFloat( this.array[ index * this.itemSize ] );

if ( this.normalized ) x = denormalize( x, this.array );

return x;

}

setX( index, x ) {

if ( this.normalized ) x = normalize( x, this.array );

this.array[ index * this.itemSize ] = toHalfFloat( x );

return this;

}

getY( index ) {

let y = fromHalfFloat( this.array[ index * this.itemSize + 1 ] );

if ( this.normalized ) y = denormalize( y, this.array );

return y;

}

setY( index, y ) {

if ( this.normalized ) y = normalize( y, this.array );

this.array[ index * this.itemSize + 1 ] = toHalfFloat( y );

return this;

}

getZ( index ) {

let z = fromHalfFloat( this.array[ index * this.itemSize + 2 ] );

if ( this.normalized ) z = denormalize( z, this.array );

return z;

}

setZ( index, z ) {

if ( this.normalized ) z = normalize( z, this.array );

this.array[ index * this.itemSize + 2 ] = toHalfFloat( z );

return this;

}

getW( index ) {

let w = fromHalfFloat( this.array[ index * this.itemSize + 3 ] );

if ( this.normalized ) w = denormalize( w, this.array );

return w;

}

setW( index, w ) {

if ( this.normalized ) w = normalize( w, this.array );

this.array[ index * this.itemSize + 3 ] = toHalfFloat( w );

return this;

}

setXY( index, x, y ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );

}

this.array[ index + 0 ] = toHalfFloat( x );
		this.array[ index + 1 ] = toHalfFloat( y );

return this;

}

setXYZ( index, x, y, z ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );

}

this.array[ index + 0 ] = toHalfFloat( x );
		this.array[ index + 1 ] = toHalfFloat( y );
		this.array[ index + 2 ] = toHalfFloat( z );

return this;

}

setXYZW( index, x, y, z, w ) {

index *= this.itemSize;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );
			w = normalize( w, this.array );

}

this.array[ index + 0 ] = toHalfFloat( x );
		this.array[ index + 1 ] = toHalfFloat( y );
		this.array[ index + 2 ] = toHalfFloat( z );
		this.array[ index + 3 ] = toHalfFloat( w );

return this;

}

class Float32BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Float32Array( array ), itemSize, normalized );

}

class Float64BufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized ) {

super( new Float64Array( array ), itemSize, normalized );

}

let _id$1 = 0;

const _m1 = /*@__PURE__*/ new Matrix4();
const _obj = /*@__PURE__*/ new Object3D();
const _offset = /*@__PURE__*/ new Vector3();
const _box$1 = /*@__PURE__*/ new Box3();
const _boxMorphTargets = /*@__PURE__*/ new Box3();
const _vector$7 = /*@__PURE__*/ new Vector3();

class BufferGeometry extends EventDispatcher {

constructor() {

super();

this.isBufferGeometry = true;

Object.defineProperty( this, 'id', { value: _id$1 ++ } );

this.uuid = generateUUID();

this.name = '';
		this.type = 'BufferGeometry';

this.index = null;
		this.attributes = {};

this.morphAttributes = {};
		this.morphTargetsRelative = false;

this.groups = [];

this.boundingBox = null;
		this.boundingSphere = null;

this.drawRange = { start: 0, count: Infinity };

this.userData = {};

}

getIndex() {

return this.index;

}

setIndex( index ) {

if ( Array.isArray( index ) ) {

this.index = new ( arrayNeedsUint32( index ) ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );

} else {

this.index = index;

}

return this;

}

getAttribute( name ) {

return this.attributes[ name ];

}

setAttribute( name, attribute ) {

this.attributes[ name ] = attribute;

return this;

}

deleteAttribute( name ) {

delete this.attributes[ name ];

return this;

}

hasAttribute( name ) {

return this.attributes[ name ] !== undefined;

}

addGroup( start, count, materialIndex = 0 ) {

this.groups.push( {

start: start,
			count: count,
			materialIndex: materialIndex

} );

}

clearGroups() {

this.groups = [];

}

setDrawRange( start, count ) {

this.drawRange.start = start;
		this.drawRange.count = count;

}

applyMatrix4( matrix ) {

const position = this.attributes.position;

if ( position !== undefined ) {

position.applyMatrix4( matrix );

position.needsUpdate = true;

}

const normal = this.attributes.normal;

if ( normal !== undefined ) {

const normalMatrix = new Matrix3().getNormalMatrix( matrix );

normal.applyNormalMatrix( normalMatrix );

normal.needsUpdate = true;

}

const tangent = this.attributes.tangent;

if ( tangent !== undefined ) {

tangent.transformDirection( matrix );

tangent.needsUpdate = true;

}

if ( this.boundingBox !== null ) {

this.computeBoundingBox();

}

if ( this.boundingSphere !== null ) {

this.computeBoundingSphere();

}

return this;

}

applyQuaternion( q ) {

_m1.makeRotationFromQuaternion( q );

this.applyMatrix4( _m1 );

return this;

}

rotateX( angle ) {

// rotate geometry around world x-axis

_m1.makeRotationX( angle );

this.applyMatrix4( _m1 );

return this;

}

rotateY( angle ) {

// rotate geometry around world y-axis

_m1.makeRotationY( angle );

this.applyMatrix4( _m1 );

return this;

}

rotateZ( angle ) {

// rotate geometry around world z-axis

_m1.makeRotationZ( angle );

this.applyMatrix4( _m1 );

return this;

}

translate( x, y, z ) {

// translate geometry

_m1.makeTranslation( x, y, z );

this.applyMatrix4( _m1 );

return this;

}

scale( x, y, z ) {

// scale geometry

_m1.makeScale( x, y, z );

this.applyMatrix4( _m1 );

return this;

}

lookAt( vector ) {

_obj.lookAt( vector );

_obj.updateMatrix();

this.applyMatrix4( _obj.matrix );

return this;

}

center() {

this.computeBoundingBox();

this.boundingBox.getCenter( _offset ).negate();

this.translate( _offset.x, _offset.y, _offset.z );

return this;

}

setFromPoints( points ) {

const position = [];

for ( let i = 0, l = points.length; i < l; i ++ ) {

const point = points[ i ];
			position.push( point.x, point.y, point.z || 0 );

}

this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );

return this;

}

computeBoundingBox() {

if ( this.boundingBox === null ) {

this.boundingBox = new Box3();

}

const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;

if ( position && position.isGLBufferAttribute ) {

console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this );

this.boundingBox.set(
				new Vector3( - Infinity, - Infinity, - Infinity ),
				new Vector3( + Infinity, + Infinity, + Infinity )
			);

return;

}

if ( position !== undefined ) {

this.boundingBox.setFromBufferAttribute( position );

// process morph attributes if present

if ( morphAttributesPosition ) {

for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

const morphAttribute = morphAttributesPosition[ i ];
					_box$1.setFromBufferAttribute( morphAttribute );

if ( this.morphTargetsRelative ) {

_vector$7.addVectors( this.boundingBox.min, _box$1.min );
						this.boundingBox.expandByPoint( _vector$7 );

_vector$7.addVectors( this.boundingBox.max, _box$1.max );
						this.boundingBox.expandByPoint( _vector$7 );

} else {

this.boundingBox.expandByPoint( _box$1.min );
						this.boundingBox.expandByPoint( _box$1.max );

}

} else {

this.boundingBox.makeEmpty();

}

if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {

console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );

}

computeBoundingSphere() {

if ( this.boundingSphere === null ) {

this.boundingSphere = new Sphere();

}

const position = this.attributes.position;
		const morphAttributesPosition = this.morphAttributes.position;

if ( position && position.isGLBufferAttribute ) {

console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this );

this.boundingSphere.set( new Vector3(), Infinity );

return;

}

if ( position ) {

// first, find the center of the bounding sphere

const center = this.boundingSphere.center;

_box$1.setFromBufferAttribute( position );

// process morph attributes if present

if ( morphAttributesPosition ) {

for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

const morphAttribute = morphAttributesPosition[ i ];
					_boxMorphTargets.setFromBufferAttribute( morphAttribute );

if ( this.morphTargetsRelative ) {

_vector$7.addVectors( _box$1.min, _boxMorphTargets.min );
						_box$1.expandByPoint( _vector$7 );

_vector$7.addVectors( _box$1.max, _boxMorphTargets.max );
						_box$1.expandByPoint( _vector$7 );

} else {

_box$1.expandByPoint( _boxMorphTargets.min );
						_box$1.expandByPoint( _boxMorphTargets.max );

}

_box$1.getCenter( center );

// second, try to find a boundingSphere with a radius smaller than the
			// boundingSphere of the boundingBox: sqrt(3) smaller in the best case

let maxRadiusSq = 0;

for ( let i = 0, il = position.count; i < il; i ++ ) {

_vector$7.fromBufferAttribute( position, i );

maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$7 ) );

}

// process morph attributes if present

if ( morphAttributesPosition ) {

for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {

const morphAttribute = morphAttributesPosition[ i ];
					const morphTargetsRelative = this.morphTargetsRelative;

for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {

_vector$7.fromBufferAttribute( morphAttribute, j );

if ( morphTargetsRelative ) {

_offset.fromBufferAttribute( position, j );
							_vector$7.add( _offset );

}

maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$7 ) );

}

this.boundingSphere.radius = Math.sqrt( maxRadiusSq );

if ( isNaN( this.boundingSphere.radius ) ) {

console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );

}

computeTangents() {

const index = this.index;
		const attributes = this.attributes;

// based on http://www.terathon.com/code/tangent.html
		// (per vertex tangents)

if ( index === null ||
			 attributes.position === undefined ||
			 attributes.normal === undefined ||
			 attributes.uv === undefined ) {

console.error( 'THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );
			return;

}

const indices = index.array;
		const positions = attributes.position.array;
		const normals = attributes.normal.array;
		const uvs = attributes.uv.array;

const nVertices = positions.length / 3;

if ( this.hasAttribute( 'tangent' ) === false ) {

this.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * nVertices ), 4 ) );

}

const tangents = this.getAttribute( 'tangent' ).array;

const tan1 = [], tan2 = [];

for ( let i = 0; i < nVertices; i ++ ) {

tan1[ i ] = new Vector3();
			tan2[ i ] = new Vector3();

}

const vA = new Vector3(),
			vB = new Vector3(),
			vC = new Vector3(),

uvA = new Vector2(),
			uvB = new Vector2(),
			uvC = new Vector2(),

sdir = new Vector3(),
			tdir = new Vector3();

function handleTriangle( a, b, c ) {

vA.fromArray( positions, a * 3 );
			vB.fromArray( positions, b * 3 );
			vC.fromArray( positions, c * 3 );

uvA.fromArray( uvs, a * 2 );
			uvB.fromArray( uvs, b * 2 );
			uvC.fromArray( uvs, c * 2 );

vB.sub( vA );
			vC.sub( vA );

uvB.sub( uvA );
			uvC.sub( uvA );

const r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );

// silently ignore degenerate uv triangles having coincident or colinear vertices

if ( ! isFinite( r ) ) return;

sdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );
			tdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );

tan1[ a ].add( sdir );
			tan1[ b ].add( sdir );
			tan1[ c ].add( sdir );

tan2[ a ].add( tdir );
			tan2[ b ].add( tdir );
			tan2[ c ].add( tdir );

}

let groups = this.groups;

if ( groups.length === 0 ) {

groups = [ {
				start: 0,
				count: indices.length
			} ];

}

for ( let i = 0, il = groups.length; i < il; ++ i ) {

const group = groups[ i ];

const start = group.start;
			const count = group.count;

for ( let j = start, jl = start + count; j < jl; j += 3 ) {

handleTriangle(
					indices[ j + 0 ],
					indices[ j + 1 ],
					indices[ j + 2 ]
				);

}

const tmp = new Vector3(), tmp2 = new Vector3();
		const n = new Vector3(), n2 = new Vector3();

function handleVertex( v ) {

n.fromArray( normals, v * 3 );
			n2.copy( n );

const t = tan1[ v ];

// Gram-Schmidt orthogonalize

tmp.copy( t );
			tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();

// Calculate handedness

tmp2.crossVectors( n2, t );
			const test = tmp2.dot( tan2[ v ] );
			const w = ( test < 0.0 ) ? - 1.0 : 1.0;

tangents[ v * 4 ] = tmp.x;
			tangents[ v * 4 + 1 ] = tmp.y;
			tangents[ v * 4 + 2 ] = tmp.z;
			tangents[ v * 4 + 3 ] = w;

}

for ( let i = 0, il = groups.length; i < il; ++ i ) {

const group = groups[ i ];

const start = group.start;
			const count = group.count;

for ( let j = start, jl = start + count; j < jl; j += 3 ) {

handleVertex( indices[ j + 0 ] );
				handleVertex( indices[ j + 1 ] );
				handleVertex( indices[ j + 2 ] );

}

computeVertexNormals() {

const index = this.index;
		const positionAttribute = this.getAttribute( 'position' );

if ( positionAttribute !== undefined ) {

let normalAttribute = this.getAttribute( 'normal' );

if ( normalAttribute === undefined ) {

normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
				this.setAttribute( 'normal', normalAttribute );

} else {

// reset existing normals to zero

for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {

normalAttribute.setXYZ( i, 0, 0, 0 );

}

const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
			const cb = new Vector3(), ab = new Vector3();

// indexed elements

if ( index ) {

for ( let i = 0, il = index.count; i < il; i += 3 ) {

const vA = index.getX( i + 0 );
					const vB = index.getX( i + 1 );
					const vC = index.getX( i + 2 );

pA.fromBufferAttribute( positionAttribute, vA );
					pB.fromBufferAttribute( positionAttribute, vB );
					pC.fromBufferAttribute( positionAttribute, vC );

cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );

nA.fromBufferAttribute( normalAttribute, vA );
					nB.fromBufferAttribute( normalAttribute, vB );
					nC.fromBufferAttribute( normalAttribute, vC );

nA.add( cb );
					nB.add( cb );
					nC.add( cb );

normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );

}

} else {

// non-indexed elements (unconnected triangle soup)

for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {

pA.fromBufferAttribute( positionAttribute, i + 0 );
					pB.fromBufferAttribute( positionAttribute, i + 1 );
					pC.fromBufferAttribute( positionAttribute, i + 2 );

cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );

normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );

}

this.normalizeNormals();

normalAttribute.needsUpdate = true;

}

merge() { // @deprecated, r144

console.error( 'THREE.BufferGeometry.merge() has been removed. Use THREE.BufferGeometryUtils.mergeGeometries() instead.' );
		return this;

}

normalizeNormals() {

const normals = this.attributes.normal;

for ( let i = 0, il = normals.count; i < il; i ++ ) {

_vector$7.fromBufferAttribute( normals, i );

_vector$7.normalize();

normals.setXYZ( i, _vector$7.x, _vector$7.y, _vector$7.z );

}

toNonIndexed() {

function convertBufferAttribute( attribute, indices ) {

const array = attribute.array;
			const itemSize = attribute.itemSize;
			const normalized = attribute.normalized;

const array2 = new array.constructor( indices.length * itemSize );

let index = 0, index2 = 0;

for ( let i = 0, l = indices.length; i < l; i ++ ) {

if ( attribute.isInterleavedBufferAttribute ) {

index = indices[ i ] * attribute.data.stride + attribute.offset;

} else {

index = indices[ i ] * itemSize;

}

for ( let j = 0; j < itemSize; j ++ ) {

array2[ index2 ++ ] = array[ index ++ ];

}

return new BufferAttribute( array2, itemSize, normalized );

}

if ( this.index === null ) {

console.warn( 'THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.' );
			return this;

}

const geometry2 = new BufferGeometry();

const indices = this.index.array;
		const attributes = this.attributes;

// attributes

for ( const name in attributes ) {

const attribute = attributes[ name ];

const newAttribute = convertBufferAttribute( attribute, indices );

geometry2.setAttribute( name, newAttribute );

}

// morph attributes

const morphAttributes = this.morphAttributes;

for ( const name in morphAttributes ) {

const morphArray = [];
			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {

const attribute = morphAttribute[ i ];

const newAttribute = convertBufferAttribute( attribute, indices );

morphArray.push( newAttribute );

}

geometry2.morphAttributes[ name ] = morphArray;

}

geometry2.morphTargetsRelative = this.morphTargetsRelative;

// groups

const groups = this.groups;

for ( let i = 0, l = groups.length; i < l; i ++ ) {

const group = groups[ i ];
			geometry2.addGroup( group.start, group.count, group.materialIndex );

}

return geometry2;

}

toJSON() {

const data = {
			metadata: {
				version: 4.5,
				type: 'BufferGeometry',
				generator: 'BufferGeometry.toJSON'
			}
		};

// standard BufferGeometry serialization

data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;
		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;

if ( this.parameters !== undefined ) {

const parameters = this.parameters;

for ( const key in parameters ) {

if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];

}

return data;

}

// for simplicity the code assumes attributes are not shared across geometries, see #15811

data.data = { attributes: {} };

const index = this.index;

if ( index !== null ) {

data.data.index = {
				type: index.array.constructor.name,
				array: Array.prototype.slice.call( index.array )
			};

}

const attributes = this.attributes;

for ( const key in attributes ) {

const attribute = attributes[ key ];

data.data.attributes[ key ] = attribute.toJSON( data.data );

}

const morphAttributes = {};
		let hasMorphAttributes = false;

for ( const key in this.morphAttributes ) {

const attributeArray = this.morphAttributes[ key ];

const array = [];

for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

const attribute = attributeArray[ i ];

array.push( attribute.toJSON( data.data ) );

}

if ( array.length > 0 ) {

morphAttributes[ key ] = array;

hasMorphAttributes = true;

}

if ( hasMorphAttributes ) {

data.data.morphAttributes = morphAttributes;
			data.data.morphTargetsRelative = this.morphTargetsRelative;

}

const groups = this.groups;

if ( groups.length > 0 ) {

data.data.groups = JSON.parse( JSON.stringify( groups ) );

}

const boundingSphere = this.boundingSphere;

if ( boundingSphere !== null ) {

data.data.boundingSphere = {
				center: boundingSphere.center.toArray(),
				radius: boundingSphere.radius
			};

}

return data;

}

clone() {

return new this.constructor().copy( this );

}

copy( source ) {

// reset

this.index = null;
		this.attributes = {};
		this.morphAttributes = {};
		this.groups = [];
		this.boundingBox = null;
		this.boundingSphere = null;

// used for storing cloned, shared data

const data = {};

// name

this.name = source.name;

// index

const index = source.index;

if ( index !== null ) {

this.setIndex( index.clone( data ) );

}

// attributes

const attributes = source.attributes;

for ( const name in attributes ) {

const attribute = attributes[ name ];
			this.setAttribute( name, attribute.clone( data ) );

}

// morph attributes

const morphAttributes = source.morphAttributes;

for ( const name in morphAttributes ) {

const array = [];
			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes

for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {

array.push( morphAttribute[ i ].clone( data ) );

}

this.morphAttributes[ name ] = array;

}

this.morphTargetsRelative = source.morphTargetsRelative;

// groups

const groups = source.groups;

for ( let i = 0, l = groups.length; i < l; i ++ ) {

const group = groups[ i ];
			this.addGroup( group.start, group.count, group.materialIndex );

}

// bounding box

const boundingBox = source.boundingBox;

if ( boundingBox !== null ) {

this.boundingBox = boundingBox.clone();

}

// bounding sphere

const boundingSphere = source.boundingSphere;

if ( boundingSphere !== null ) {

this.boundingSphere = boundingSphere.clone();

}

// draw range

this.drawRange.start = source.drawRange.start;
		this.drawRange.count = source.drawRange.count;

// user data

this.userData = source.userData;

return this;

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

}

const _inverseMatrix$2 = /*@__PURE__*/ new Matrix4();
const _ray$2 = /*@__PURE__*/ new Ray();
const _sphere$4 = /*@__PURE__*/ new Sphere();
const _sphereHitAt = /*@__PURE__*/ new Vector3();

const _vA$1 = /*@__PURE__*/ new Vector3();
const _vB$1 = /*@__PURE__*/ new Vector3();
const _vC$1 = /*@__PURE__*/ new Vector3();

const _tempA = /*@__PURE__*/ new Vector3();
const _morphA = /*@__PURE__*/ new Vector3();

const _uvA$1 = /*@__PURE__*/ new Vector2();
const _uvB$1 = /*@__PURE__*/ new Vector2();
const _uvC$1 = /*@__PURE__*/ new Vector2();

const _normalA = /*@__PURE__*/ new Vector3();
const _normalB = /*@__PURE__*/ new Vector3();
const _normalC = /*@__PURE__*/ new Vector3();

const _intersectionPoint = /*@__PURE__*/ new Vector3();
const _intersectionPointWorld = /*@__PURE__*/ new Vector3();

class Mesh extends Object3D {

constructor( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {

super();

this.isMesh = true;

this.type = 'Mesh';

this.geometry = geometry;
		this.material = material;

this.updateMorphTargets();

}

copy( source, recursive ) {

super.copy( source, recursive );

if ( source.morphTargetInfluences !== undefined ) {

this.morphTargetInfluences = source.morphTargetInfluences.slice();

}

if ( source.morphTargetDictionary !== undefined ) {

this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );

}

this.material = source.material;
		this.geometry = source.geometry;

return this;

}

updateMorphTargets() {

const geometry = this.geometry;

const morphAttributes = geometry.morphAttributes;
		const keys = Object.keys( morphAttributes );

if ( keys.length > 0 ) {

const morphAttribute = morphAttributes[ keys[ 0 ] ];

if ( morphAttribute !== undefined ) {

this.morphTargetInfluences = [];
				this.morphTargetDictionary = {};

for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

const name = morphAttribute[ m ].name || String( m );

this.morphTargetInfluences.push( 0 );
					this.morphTargetDictionary[ name ] = m;

}

getVertexPosition( index, target ) {

const geometry = this.geometry;
		const position = geometry.attributes.position;
		const morphPosition = geometry.morphAttributes.position;
		const morphTargetsRelative = geometry.morphTargetsRelative;

target.fromBufferAttribute( position, index );

const morphInfluences = this.morphTargetInfluences;

if ( morphPosition && morphInfluences ) {

_morphA.set( 0, 0, 0 );

for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {

const influence = morphInfluences[ i ];
				const morphAttribute = morphPosition[ i ];

if ( influence === 0 ) continue;

_tempA.fromBufferAttribute( morphAttribute, index );

if ( morphTargetsRelative ) {

_morphA.addScaledVector( _tempA, influence );

} else {

_morphA.addScaledVector( _tempA.sub( target ), influence );

}

target.add( _morphA );

}

if ( this.isSkinnedMesh ) {

this.applyBoneTransform( index, target );

}

return target;

}

raycast( raycaster, intersects ) {

const geometry = this.geometry;
		const material = this.material;
		const matrixWorld = this.matrixWorld;

if ( material === undefined ) return;

// Checking boundingSphere distance to ray

if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

_sphere$4.copy( geometry.boundingSphere );
		_sphere$4.applyMatrix4( matrixWorld );

_ray$2.copy( raycaster.ray ).recast( raycaster.near );

if ( _sphere$4.containsPoint( _ray$2.origin ) === false ) {

if ( _ray$2.intersectSphere( _sphere$4, _sphereHitAt ) === null ) return;

if ( _ray$2.origin.distanceToSquared( _sphereHitAt ) > ( raycaster.far - raycaster.near ) ** 2 ) return;

}

_inverseMatrix$2.copy( matrixWorld ).invert();
		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );

// Check boundingBox before continuing

if ( geometry.boundingBox !== null ) {

if ( _ray$2.intersectsBox( geometry.boundingBox ) === false ) return;

}

let intersection;

const index = geometry.index;
		const position = geometry.attributes.position;
		const uv = geometry.attributes.uv;
		const uv2 = geometry.attributes.uv2;
		const normal = geometry.attributes.normal;
		const groups = geometry.groups;
		const drawRange = geometry.drawRange;

if ( index !== null ) {

// indexed buffer geometry

if ( Array.isArray( material ) ) {

for ( let i = 0, il = groups.length; i < il; i ++ ) {

const group = groups[ i ];
					const groupMaterial = material[ group.materialIndex ];

const start = Math.max( group.start, drawRange.start );
					const end = Math.min( index.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

for ( let j = start, jl = end; j < jl; j += 3 ) {

const a = index.getX( j );
						const b = index.getX( j + 1 );
						const c = index.getX( j + 2 );

intersection = checkGeometryIntersection( this, groupMaterial, raycaster, _ray$2, uv, uv2, normal, a, b, c );

if ( intersection ) {

intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
							intersection.face.materialIndex = group.materialIndex;
							intersects.push( intersection );

}

} else {

const start = Math.max( 0, drawRange.start );
				const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, il = end; i < il; i += 3 ) {

const a = index.getX( i );
					const b = index.getX( i + 1 );
					const c = index.getX( i + 2 );

intersection = checkGeometryIntersection( this, material, raycaster, _ray$2, uv, uv2, normal, a, b, c );

if ( intersection ) {

intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics
						intersects.push( intersection );

}

} else if ( position !== undefined ) {

// non-indexed buffer geometry

if ( Array.isArray( material ) ) {

for ( let i = 0, il = groups.length; i < il; i ++ ) {

const group = groups[ i ];
					const groupMaterial = material[ group.materialIndex ];

const start = Math.max( group.start, drawRange.start );
					const end = Math.min( position.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );

for ( let j = start, jl = end; j < jl; j += 3 ) {

const a = j;
						const b = j + 1;
						const c = j + 2;

intersection = checkGeometryIntersection( this, groupMaterial, raycaster, _ray$2, uv, uv2, normal, a, b, c );

if ( intersection ) {

intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
							intersection.face.materialIndex = group.materialIndex;
							intersects.push( intersection );

}

} else {

const start = Math.max( 0, drawRange.start );
				const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, il = end; i < il; i += 3 ) {

const a = i;
					const b = i + 1;
					const c = i + 2;

intersection = checkGeometryIntersection( this, material, raycaster, _ray$2, uv, uv2, normal, a, b, c );

if ( intersection ) {

intersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics
						intersects.push( intersection );

}

function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {

let intersect;

if ( material.side === BackSide ) {

intersect = ray.intersectTriangle( pC, pB, pA, true, point );

} else {

intersect = ray.intersectTriangle( pA, pB, pC, ( material.side === FrontSide ), point );

}

if ( intersect === null ) return null;

_intersectionPointWorld.copy( point );
	_intersectionPointWorld.applyMatrix4( object.matrixWorld );

const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );

if ( distance < raycaster.near || distance > raycaster.far ) return null;

return {
		distance: distance,
		point: _intersectionPointWorld.clone(),
		object: object
	};

}

function checkGeometryIntersection( object, material, raycaster, ray, uv, uv2, normal, a, b, c ) {

object.getVertexPosition( a, _vA$1 );
	object.getVertexPosition( b, _vB$1 );
	object.getVertexPosition( c, _vC$1 );

const intersection = checkIntersection( object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint );

if ( intersection ) {

if ( uv ) {

_uvA$1.fromBufferAttribute( uv, a );
			_uvB$1.fromBufferAttribute( uv, b );
			_uvC$1.fromBufferAttribute( uv, c );

intersection.uv = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

}

if ( uv2 ) {

_uvA$1.fromBufferAttribute( uv2, a );
			_uvB$1.fromBufferAttribute( uv2, b );
			_uvC$1.fromBufferAttribute( uv2, c );

intersection.uv2 = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );

}

if ( normal ) {

_normalA.fromBufferAttribute( normal, a );
			_normalB.fromBufferAttribute( normal, b );
			_normalC.fromBufferAttribute( normal, c );

intersection.normal = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _normalA, _normalB, _normalC, new Vector3() );

if ( intersection.normal.dot( ray.direction ) > 0 ) {

intersection.normal.multiplyScalar( - 1 );

}

const face = {
			a: a,
			b: b,
			c: c,
			normal: new Vector3(),
			materialIndex: 0
		};

Triangle.getNormal( _vA$1, _vB$1, _vC$1, face.normal );

intersection.face = face;

}

return intersection;

}

class BoxGeometry extends BufferGeometry {

constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {

super();

this.type = 'BoxGeometry';

this.parameters = {
			width: width,
			height: height,
			depth: depth,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			depthSegments: depthSegments
		};

const scope = this;

// segments

widthSegments = Math.floor( widthSegments );
		heightSegments = Math.floor( heightSegments );
		depthSegments = Math.floor( depthSegments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

let numberOfVertices = 0;
		let groupStart = 0;

// build each side of the box geometry

buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz

// build geometry

this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );

function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {

const segmentWidth = width / gridX;
			const segmentHeight = height / gridY;

const widthHalf = width / 2;
			const heightHalf = height / 2;
			const depthHalf = depth / 2;

const gridX1 = gridX + 1;
			const gridY1 = gridY + 1;

let vertexCounter = 0;
			let groupCount = 0;

const vector = new Vector3();

// generate vertices, normals and uvs

for ( let iy = 0; iy < gridY1; iy ++ ) {

const y = iy * segmentHeight - heightHalf;

for ( let ix = 0; ix < gridX1; ix ++ ) {

const x = ix * segmentWidth - widthHalf;

// set values to correct vector component

vector[ u ] = x * udir;
					vector[ v ] = y * vdir;
					vector[ w ] = depthHalf;

// now apply vector to vertex buffer

vertices.push( vector.x, vector.y, vector.z );

// set values to correct vector component

vector[ u ] = 0;
					vector[ v ] = 0;
					vector[ w ] = depth > 0 ? 1 : - 1;

// now apply vector to normal buffer

normals.push( vector.x, vector.y, vector.z );

// uvs

uvs.push( ix / gridX );
					uvs.push( 1 - ( iy / gridY ) );

// counters

vertexCounter += 1;

}

// indices

// 1. you need three indices to draw a single face
			// 2. a single segment consists of two faces
			// 3. so we need to generate six (2*3) indices per segment

for ( let iy = 0; iy < gridY; iy ++ ) {

for ( let ix = 0; ix < gridX; ix ++ ) {

const a = numberOfVertices + ix + gridX1 * iy;
					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;

// faces

indices.push( a, b, d );
					indices.push( b, c, d );

// increase counter

groupCount += 6;

}

// add a group to the geometry. this will ensure multi material support

scope.addGroup( groupStart, groupCount, materialIndex );

// calculate new start value for groups

groupStart += groupCount;

// update total number of vertices

numberOfVertices += vertexCounter;

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new BoxGeometry( data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments );

}

/**
 * Uniform Utilities
 */

function cloneUniforms( src ) {

const dst = {};

for ( const u in src ) {

dst[ u ] = {};

for ( const p in src[ u ] ) {

const property = src[ u ][ p ];

if ( property && ( property.isColor ||
				property.isMatrix3 || property.isMatrix4 ||
				property.isVector2 || property.isVector3 || property.isVector4 ||
				property.isTexture || property.isQuaternion ) ) {

if ( property.isRenderTargetTexture ) {

console.warn( 'UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms().' );
					dst[ u ][ p ] = null;

} else {

dst[ u ][ p ] = property.clone();

}

} else if ( Array.isArray( property ) ) {

dst[ u ][ p ] = property.slice();

} else {

dst[ u ][ p ] = property;

}

return dst;

}

function mergeUniforms( uniforms ) {

const merged = {};

for ( let u = 0; u < uniforms.length; u ++ ) {

const tmp = cloneUniforms( uniforms[ u ] );

for ( const p in tmp ) {

merged[ p ] = tmp[ p ];

}

return merged;

}

function cloneUniformsGroups( src ) {

const dst = [];

for ( let u = 0; u < src.length; u ++ ) {

dst.push( src[ u ].clone() );

}

return dst;

}

function getUnlitUniformColorSpace( renderer ) {

if ( renderer.getRenderTarget() === null ) {

// https://github.com/mrdoob/three.js/pull/23937#issuecomment-1111067398
		return renderer.outputEncoding === sRGBEncoding ? SRGBColorSpace : LinearSRGBColorSpace;

}

return LinearSRGBColorSpace;

}

// Legacy

const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };

var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";

var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";

class ShaderMaterial extends Material {

constructor( parameters ) {

super();

this.isShaderMaterial = true;

this.type = 'ShaderMaterial';

this.defines = {};
		this.uniforms = {};
		this.uniformsGroups = [];

this.vertexShader = default_vertex;
		this.fragmentShader = default_fragment;

this.linewidth = 1;

this.wireframe = false;
		this.wireframeLinewidth = 1;

this.fog = false; // set to use scene fog
		this.lights = false; // set to use scene lights
		this.clipping = false; // set to use user-defined clipping planes

this.forceSinglePass = true;

this.extensions = {
			derivatives: false, // set to use derivatives
			fragDepth: false, // set to use fragment depth values
			drawBuffers: false, // set to use draw buffers
			shaderTextureLOD: false // set to use shader texture LOD
		};

// When rendered geometry doesn't include these attributes but the material does,
		// use these default values in WebGL. This avoids errors when buffer data is missing.
		this.defaultAttributeValues = {
			'color': [ 1, 1, 1 ],
			'uv': [ 0, 0 ],
			'uv2': [ 0, 0 ]
		};

this.index0AttributeName = undefined;
		this.uniformsNeedUpdate = false;

this.glslVersion = null;

if ( parameters !== undefined ) {

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.fragmentShader = source.fragmentShader;
		this.vertexShader = source.vertexShader;

this.uniforms = cloneUniforms( source.uniforms );
		this.uniformsGroups = cloneUniformsGroups( source.uniformsGroups );

this.defines = Object.assign( {}, source.defines );

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

this.fog = source.fog;
		this.lights = source.lights;
		this.clipping = source.clipping;

this.extensions = Object.assign( {}, source.extensions );

this.glslVersion = source.glslVersion;

return this;

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.glslVersion = this.glslVersion;
		data.uniforms = {};

for ( const name in this.uniforms ) {

const uniform = this.uniforms[ name ];
			const value = uniform.value;

if ( value && value.isTexture ) {

data.uniforms[ name ] = {
					type: 't',
					value: value.toJSON( meta ).uuid
				};

} else if ( value && value.isColor ) {

data.uniforms[ name ] = {
					type: 'c',
					value: value.getHex()
				};

} else if ( value && value.isVector2 ) {

data.uniforms[ name ] = {
					type: 'v2',
					value: value.toArray()
				};

} else if ( value && value.isVector3 ) {

data.uniforms[ name ] = {
					type: 'v3',
					value: value.toArray()
				};

} else if ( value && value.isVector4 ) {

data.uniforms[ name ] = {
					type: 'v4',
					value: value.toArray()
				};

} else if ( value && value.isMatrix3 ) {

data.uniforms[ name ] = {
					type: 'm3',
					value: value.toArray()
				};

} else if ( value && value.isMatrix4 ) {

data.uniforms[ name ] = {
					type: 'm4',
					value: value.toArray()
				};

} else {

data.uniforms[ name ] = {
					value: value
				};

// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far

}

if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;

data.vertexShader = this.vertexShader;
		data.fragmentShader = this.fragmentShader;

const extensions = {};

for ( const key in this.extensions ) {

if ( this.extensions[ key ] === true ) extensions[ key ] = true;

}

if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;

return data;

}

class Camera extends Object3D {

constructor() {

super();

this.isCamera = true;

this.type = 'Camera';

this.matrixWorldInverse = new Matrix4();

this.projectionMatrix = new Matrix4();
		this.projectionMatrixInverse = new Matrix4();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.matrixWorldInverse.copy( source.matrixWorldInverse );

this.projectionMatrix.copy( source.projectionMatrix );
		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );

return this;

}

getWorldDirection( target ) {

this.updateWorldMatrix( true, false );

const e = this.matrixWorld.elements;

return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();

}

updateMatrixWorld( force ) {

super.updateMatrixWorld( force );

this.matrixWorldInverse.copy( this.matrixWorld ).invert();

}

updateWorldMatrix( updateParents, updateChildren ) {

super.updateWorldMatrix( updateParents, updateChildren );

this.matrixWorldInverse.copy( this.matrixWorld ).invert();

}

clone() {

return new this.constructor().copy( this );

}

class PerspectiveCamera extends Camera {

constructor( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {

super();

this.isPerspectiveCamera = true;

this.type = 'PerspectiveCamera';

this.fov = fov;
		this.zoom = 1;

this.near = near;
		this.far = far;
		this.focus = 10;

this.aspect = aspect;
		this.view = null;

this.filmGauge = 35;	// width of the film (default in millimeters)
		this.filmOffset = 0;	// horizontal film offset (same unit as gauge)

this.updateProjectionMatrix();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.fov = source.fov;
		this.zoom = source.zoom;

this.near = source.near;
		this.far = source.far;
		this.focus = source.focus;

this.aspect = source.aspect;
		this.view = source.view === null ? null : Object.assign( {}, source.view );

this.filmGauge = source.filmGauge;
		this.filmOffset = source.filmOffset;

return this;

}

/**
	 * Sets the FOV by focal length in respect to the current .filmGauge.
	 *
	 * The default film gauge is 35, so that the focal length can be specified for
	 * a 35mm (full frame) camera.
	 *
	 * Values for focal length and film gauge must have the same unit.
	 */
	setFocalLength( focalLength ) {

/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;

this.fov = RAD2DEG * 2 * Math.atan( vExtentSlope );
		this.updateProjectionMatrix();

}

/**
	 * Calculates the focal length from the current .fov and .filmGauge.
	 */
	getFocalLength() {

const vExtentSlope = Math.tan( DEG2RAD * 0.5 * this.fov );

return 0.5 * this.getFilmHeight() / vExtentSlope;

}

getEffectiveFOV() {

return RAD2DEG * 2 * Math.atan(
			Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom );

}

getFilmWidth() {

// film not completely covered in portrait format (aspect < 1)
		return this.filmGauge * Math.min( this.aspect, 1 );

}

getFilmHeight() {

// film not completely covered in landscape format (aspect > 1)
		return this.filmGauge / Math.max( this.aspect, 1 );

}

/**
	 * Sets an offset in a larger frustum. This is useful for multi-window or
	 * multi-monitor/multi-machine setups.
	 *
	 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
	 * the monitors are in grid like this
	 *
	 *   +---+---+---+
	 *   | A | B | C |
	 *   +---+---+---+
	 *   | D | E | F |
	 *   +---+---+---+
	 *
	 * then for each monitor you would call it like this
	 *
	 *   const w = 1920;
	 *   const h = 1080;
	 *   const fullWidth = w * 3;
	 *   const fullHeight = h * 2;
	 *
	 *   --A--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
	 *   --B--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
	 *   --C--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
	 *   --D--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
	 *   --E--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
	 *   --F--
	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
	 *
	 *   Note there is no reason monitors have to be the same size or in a grid.
	 */
	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

this.aspect = fullWidth / fullHeight;

if ( this.view === null ) {

this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};

}

this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;

this.updateProjectionMatrix();

}

clearViewOffset() {

if ( this.view !== null ) {

this.view.enabled = false;

}

this.updateProjectionMatrix();

}

updateProjectionMatrix() {

const near = this.near;
		let top = near * Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom;
		let height = 2 * top;
		let width = this.aspect * height;
		let left = - 0.5 * width;
		const view = this.view;

if ( this.view !== null && this.view.enabled ) {

const fullWidth = view.fullWidth,
				fullHeight = view.fullHeight;

left += view.offsetX * width / fullWidth;
			top -= view.offsetY * height / fullHeight;
			width *= view.width / fullWidth;
			height *= view.height / fullHeight;

}

const skew = this.filmOffset;
		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();

this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );

this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.object.fov = this.fov;
		data.object.zoom = this.zoom;

data.object.near = this.near;
		data.object.far = this.far;
		data.object.focus = this.focus;

data.object.aspect = this.aspect;

if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

data.object.filmGauge = this.filmGauge;
		data.object.filmOffset = this.filmOffset;

return data;

}

const fov = - 90; // negative fov is not an error
const aspect = 1;

class CubeCamera extends Object3D {

constructor( near, far, renderTarget ) {

super();

this.type = 'CubeCamera';

this.renderTarget = renderTarget;

const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
		cameraPX.layers = this.layers;
		cameraPX.up.set( 0, 1, 0 );
		cameraPX.lookAt( 1, 0, 0 );
		this.add( cameraPX );

const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
		cameraNX.layers = this.layers;
		cameraNX.up.set( 0, 1, 0 );
		cameraNX.lookAt( - 1, 0, 0 );
		this.add( cameraNX );

const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
		cameraPY.layers = this.layers;
		cameraPY.up.set( 0, 0, - 1 );
		cameraPY.lookAt( 0, 1, 0 );
		this.add( cameraPY );

const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
		cameraNY.layers = this.layers;
		cameraNY.up.set( 0, 0, 1 );
		cameraNY.lookAt( 0, - 1, 0 );
		this.add( cameraNY );

const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
		cameraPZ.layers = this.layers;
		cameraPZ.up.set( 0, 1, 0 );
		cameraPZ.lookAt( 0, 0, 1 );
		this.add( cameraPZ );

const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
		cameraNZ.layers = this.layers;
		cameraNZ.up.set( 0, 1, 0 );
		cameraNZ.lookAt( 0, 0, - 1 );
		this.add( cameraNZ );

}

update( renderer, scene ) {

if ( this.parent === null ) this.updateMatrixWorld();

const renderTarget = this.renderTarget;

const [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = this.children;

const currentRenderTarget = renderer.getRenderTarget();

const currentToneMapping = renderer.toneMapping;
		const currentXrEnabled = renderer.xr.enabled;

renderer.toneMapping = NoToneMapping;
		renderer.xr.enabled = false;

const generateMipmaps = renderTarget.texture.generateMipmaps;

renderTarget.texture.generateMipmaps = false;

renderer.setRenderTarget( renderTarget, 0 );
		renderer.render( scene, cameraPX );

renderer.setRenderTarget( renderTarget, 1 );
		renderer.render( scene, cameraNX );

renderer.setRenderTarget( renderTarget, 2 );
		renderer.render( scene, cameraPY );

renderer.setRenderTarget( renderTarget, 3 );
		renderer.render( scene, cameraNY );

renderer.setRenderTarget( renderTarget, 4 );
		renderer.render( scene, cameraPZ );

renderTarget.texture.generateMipmaps = generateMipmaps;

renderer.setRenderTarget( renderTarget, 5 );
		renderer.render( scene, cameraNZ );

renderer.setRenderTarget( currentRenderTarget );

renderer.toneMapping = currentToneMapping;
		renderer.xr.enabled = currentXrEnabled;

renderTarget.texture.needsPMREMUpdate = true;

}

class CubeTexture extends Texture {

constructor( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {

images = images !== undefined ? images : [];
		mapping = mapping !== undefined ? mapping : CubeReflectionMapping;

super( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

this.isCubeTexture = true;

this.flipY = false;

}

get images() {

return this.image;

}

set images( value ) {

this.image = value;

}

class WebGLCubeRenderTarget extends WebGLRenderTarget {

constructor( size = 1, options = {} ) {

super( size, size, options );

this.isWebGLCubeRenderTarget = true;

const image = { width: size, height: size, depth: 1 };
		const images = [ image, image, image, image, image, image ];

this.texture = new CubeTexture( images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );

// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
		// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
		// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.

// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
		// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture
		// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).

this.texture.isRenderTargetTexture = true;

this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;

}

fromEquirectangularTexture( renderer, texture ) {

this.texture.type = texture.type;
		this.texture.encoding = texture.encoding;

this.texture.generateMipmaps = texture.generateMipmaps;
		this.texture.minFilter = texture.minFilter;
		this.texture.magFilter = texture.magFilter;

const shader = {

uniforms: {
				tEquirect: { value: null },
			},

vertexShader: /* glsl */`

varying vec3 vWorldDirection;

vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

}

void main() {

vWorldDirection = transformDirection( position, modelMatrix );

#include <begin_vertex>
					#include <project_vertex>

}
			`,

fragmentShader: /* glsl */`

uniform sampler2D tEquirect;

varying vec3 vWorldDirection;

#include <common>

void main() {

vec3 direction = normalize( vWorldDirection );

vec2 sampleUV = equirectUv( direction );

gl_FragColor = texture2D( tEquirect, sampleUV );

}
			`
		};

const geometry = new BoxGeometry( 5, 5, 5 );

const material = new ShaderMaterial( {

uniforms: cloneUniforms( shader.uniforms ),
			vertexShader: shader.vertexShader,
			fragmentShader: shader.fragmentShader,
			side: BackSide,
			blending: NoBlending

} );

material.uniforms.tEquirect.value = texture;

const mesh = new Mesh( geometry, material );

const currentMinFilter = texture.minFilter;

// Avoid blurred poles
		if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;

const camera = new CubeCamera( 1, 10, this );
		camera.update( renderer, mesh );

texture.minFilter = currentMinFilter;

mesh.geometry.dispose();
		mesh.material.dispose();

return this;

}

clear( renderer, color, depth, stencil ) {

const currentRenderTarget = renderer.getRenderTarget();

for ( let i = 0; i < 6; i ++ ) {

renderer.setRenderTarget( this, i );

renderer.clear( color, depth, stencil );

}

renderer.setRenderTarget( currentRenderTarget );

}

const _vector1 = /*@__PURE__*/ new Vector3();
const _vector2 = /*@__PURE__*/ new Vector3();
const _normalMatrix = /*@__PURE__*/ new Matrix3();

class Plane {

constructor( normal = new Vector3( 1, 0, 0 ), constant = 0 ) {

this.isPlane = true;

// normal is assumed to be normalized

this.normal = normal;
		this.constant = constant;

}

set( normal, constant ) {

this.normal.copy( normal );
		this.constant = constant;

return this;

}

setComponents( x, y, z, w ) {

this.normal.set( x, y, z );
		this.constant = w;

return this;

}

setFromNormalAndCoplanarPoint( normal, point ) {

this.normal.copy( normal );
		this.constant = - point.dot( this.normal );

return this;

}

setFromCoplanarPoints( a, b, c ) {

const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();

// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?

this.setFromNormalAndCoplanarPoint( normal, a );

return this;

}

copy( plane ) {

this.normal.copy( plane.normal );
		this.constant = plane.constant;

return this;

}

normalize() {

// Note: will lead to a divide by zero if the plane is invalid.

const inverseNormalLength = 1.0 / this.normal.length();
		this.normal.multiplyScalar( inverseNormalLength );
		this.constant *= inverseNormalLength;

return this;

}

negate() {

this.constant *= - 1;
		this.normal.negate();

return this;

}

distanceToPoint( point ) {

return this.normal.dot( point ) + this.constant;

}

distanceToSphere( sphere ) {

return this.distanceToPoint( sphere.center ) - sphere.radius;

}

projectPoint( point, target ) {

return target.copy( point ).addScaledVector( this.normal, - this.distanceToPoint( point ) );

}

intersectLine( line, target ) {

const direction = line.delta( _vector1 );

const denominator = this.normal.dot( direction );

if ( denominator === 0 ) {

// line is coplanar, return origin
			if ( this.distanceToPoint( line.start ) === 0 ) {

return target.copy( line.start );

}

// Unsure if this is the correct method to handle this case.
			return null;

}

const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;

if ( t < 0 || t > 1 ) {

return null;

}

return target.copy( line.start ).addScaledVector( direction, t );

}

intersectsLine( line ) {

// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.

const startSign = this.distanceToPoint( line.start );
		const endSign = this.distanceToPoint( line.end );

return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );

}

intersectsBox( box ) {

return box.intersectsPlane( this );

}

intersectsSphere( sphere ) {

return sphere.intersectsPlane( this );

}

coplanarPoint( target ) {

return target.copy( this.normal ).multiplyScalar( - this.constant );

}

applyMatrix4( matrix, optionalNormalMatrix ) {

const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );

const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );

const normal = this.normal.applyMatrix3( normalMatrix ).normalize();

this.constant = - referencePoint.dot( normal );

return this;

}

translate( offset ) {

this.constant -= offset.dot( this.normal );

return this;

}

equals( plane ) {

return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );

}

clone() {

return new this.constructor().copy( this );

}

const _sphere$3 = /*@__PURE__*/ new Sphere();
const _vector$6 = /*@__PURE__*/ new Vector3();

class Frustum {

constructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) {

this.planes = [ p0, p1, p2, p3, p4, p5 ];

}

set( p0, p1, p2, p3, p4, p5 ) {

const planes = this.planes;

planes[ 0 ].copy( p0 );
		planes[ 1 ].copy( p1 );
		planes[ 2 ].copy( p2 );
		planes[ 3 ].copy( p3 );
		planes[ 4 ].copy( p4 );
		planes[ 5 ].copy( p5 );

return this;

}

copy( frustum ) {

const planes = this.planes;

for ( let i = 0; i < 6; i ++ ) {

planes[ i ].copy( frustum.planes[ i ] );

}

return this;

}

setFromProjectionMatrix( m ) {

const planes = this.planes;
		const me = m.elements;
		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];

planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();

return this;

}

intersectsObject( object ) {

if ( object.boundingSphere !== undefined ) {

if ( object.boundingSphere === null ) object.computeBoundingSphere();

_sphere$3.copy( object.boundingSphere ).applyMatrix4( object.matrixWorld );

} else {

const geometry = object.geometry;

if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

_sphere$3.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );

}

return this.intersectsSphere( _sphere$3 );

}

intersectsSprite( sprite ) {

_sphere$3.center.set( 0, 0, 0 );
		_sphere$3.radius = 0.7071067811865476;
		_sphere$3.applyMatrix4( sprite.matrixWorld );

return this.intersectsSphere( _sphere$3 );

}

intersectsSphere( sphere ) {

const planes = this.planes;
		const center = sphere.center;
		const negRadius = - sphere.radius;

for ( let i = 0; i < 6; i ++ ) {

const distance = planes[ i ].distanceToPoint( center );

if ( distance < negRadius ) {

return false;

}

return true;

}

intersectsBox( box ) {

const planes = this.planes;

for ( let i = 0; i < 6; i ++ ) {

const plane = planes[ i ];

// corner at max distance

_vector$6.x = plane.normal.x > 0 ? box.max.x : box.min.x;
			_vector$6.y = plane.normal.y > 0 ? box.max.y : box.min.y;
			_vector$6.z = plane.normal.z > 0 ? box.max.z : box.min.z;

if ( plane.distanceToPoint( _vector$6 ) < 0 ) {

return false;

}

return true;

}

containsPoint( point ) {

const planes = this.planes;

for ( let i = 0; i < 6; i ++ ) {

if ( planes[ i ].distanceToPoint( point ) < 0 ) {

return false;

}

return true;

}

clone() {

return new this.constructor().copy( this );

}

function WebGLAnimation() {

let context = null;
	let isAnimating = false;
	let animationLoop = null;
	let requestId = null;

function onAnimationFrame( time, frame ) {

animationLoop( time, frame );

requestId = context.requestAnimationFrame( onAnimationFrame );

}

return {

start: function () {

if ( isAnimating === true ) return;
			if ( animationLoop === null ) return;

requestId = context.requestAnimationFrame( onAnimationFrame );

isAnimating = true;

stop: function () {

context.cancelAnimationFrame( requestId );

isAnimating = false;

setAnimationLoop: function ( callback ) {

animationLoop = callback;

setContext: function ( value ) {

context = value;

}

};

}

function WebGLAttributes( gl, capabilities ) {

const isWebGL2 = capabilities.isWebGL2;

const buffers = new WeakMap();

function createBuffer( attribute, bufferType ) {

const array = attribute.array;
		const usage = attribute.usage;

const buffer = gl.createBuffer();

gl.bindBuffer( bufferType, buffer );
		gl.bufferData( bufferType, array, usage );

attribute.onUploadCallback();

let type;

if ( array instanceof Float32Array ) {

type = 5126;

} else if ( array instanceof Uint16Array ) {

if ( attribute.isFloat16BufferAttribute ) {

if ( isWebGL2 ) {

type = 5131;

} else {

throw new Error( 'THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.' );

}

} else {

type = 5123;

}

} else if ( array instanceof Int16Array ) {

type = 5122;

} else if ( array instanceof Uint32Array ) {

type = 5125;

} else if ( array instanceof Int32Array ) {

type = 5124;

} else if ( array instanceof Int8Array ) {

type = 5120;

} else if ( array instanceof Uint8Array ) {

type = 5121;

} else if ( array instanceof Uint8ClampedArray ) {

type = 5121;

} else {

throw new Error( 'THREE.WebGLAttributes: Unsupported buffer data format: ' + array );

}

return {
			buffer: buffer,
			type: type,
			bytesPerElement: array.BYTES_PER_ELEMENT,
			version: attribute.version
		};

}

function updateBuffer( buffer, attribute, bufferType ) {

const array = attribute.array;
		const updateRange = attribute.updateRange;

gl.bindBuffer( bufferType, buffer );

if ( updateRange.count === - 1 ) {

// Not using update ranges

gl.bufferSubData( bufferType, 0, array );

} else {

if ( isWebGL2 ) {

gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array, updateRange.offset, updateRange.count );

} else {

gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );

}

updateRange.count = - 1; // reset range

}

attribute.onUploadCallback();

}

function get( attribute ) {

if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

return buffers.get( attribute );

}

function remove( attribute ) {

if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

const data = buffers.get( attribute );

if ( data ) {

gl.deleteBuffer( data.buffer );

buffers.delete( attribute );

}

function update( attribute, bufferType ) {

if ( attribute.isGLBufferAttribute ) {

const cached = buffers.get( attribute );

if ( ! cached || cached.version < attribute.version ) {

buffers.set( attribute, {
					buffer: attribute.buffer,
					type: attribute.type,
					bytesPerElement: attribute.elementSize,
					version: attribute.version
				} );

}

return;

}

if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;

const data = buffers.get( attribute );

if ( data === undefined ) {

buffers.set( attribute, createBuffer( attribute, bufferType ) );

} else if ( data.version < attribute.version ) {

updateBuffer( data.buffer, attribute, bufferType );

data.version = attribute.version;

}

return {

get: get,
		remove: remove,
		update: update

};

}

class PlaneGeometry extends BufferGeometry {

constructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {

super();

this.type = 'PlaneGeometry';

this.parameters = {
			width: width,
			height: height,
			widthSegments: widthSegments,
			heightSegments: heightSegments
		};

const width_half = width / 2;
		const height_half = height / 2;

const gridX = Math.floor( widthSegments );
		const gridY = Math.floor( heightSegments );

const gridX1 = gridX + 1;
		const gridY1 = gridY + 1;

const segment_width = width / gridX;
		const segment_height = height / gridY;

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

for ( let iy = 0; iy < gridY1; iy ++ ) {

const y = iy * segment_height - height_half;

for ( let ix = 0; ix < gridX1; ix ++ ) {

const x = ix * segment_width - width_half;

vertices.push( x, - y, 0 );

normals.push( 0, 0, 1 );

uvs.push( ix / gridX );
				uvs.push( 1 - ( iy / gridY ) );

}

for ( let iy = 0; iy < gridY; iy ++ ) {

for ( let ix = 0; ix < gridX; ix ++ ) {

const a = ix + gridX1 * iy;
				const b = ix + gridX1 * ( iy + 1 );
				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
				const d = ( ix + 1 ) + gridX1 * iy;

indices.push( a, b, d );
				indices.push( b, c, d );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new PlaneGeometry( data.width, data.height, data.widthSegments, data.heightSegments );

}

var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vAlphaMapUv ).g;\n#endif";

var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

var alphatest_fragment = "#ifdef USE_ALPHATEST\n\tif ( diffuseColor.a < alphaTest ) discard;\n#endif";

var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n\tuniform float alphaTest;\n#endif";

var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vAoMapUv ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n\t#endif\n#endif";

var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";

var begin_vertex = "vec3 transformed = vec3( position );";

var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";

var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vBumpMapUv );\n\t\tvec2 dSTdy = dFdy( vBumpMapUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vBumpMapUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = dFdx( surf_pos.xyz );\n\t\tvec3 vSigmaY = dFdy( surf_pos.xyz );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";

var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";

var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";

var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";

var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";

var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";

var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";

var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";

var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";

var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";

var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";

var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vDisplacementMapUv ).x * displacementScale + displacementBias );\n#endif";

var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vEmissiveMapUv );\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";

var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";

var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";

var encodings_pars_fragment = "vec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}";

var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";

var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";

var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";

var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";

var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";

var fog_vertex = "#ifdef USE_FOG\n\tvFogDepth = - mvPosition.z;\n#endif";

var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float vFogDepth;\n#endif";

var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";

var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float vFogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";

var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn vec3( texture2D( gradientMap, coord ).r );\n\t#else\n\t\tvec2 fw = fwidth( coord ) * 0.5;\n\t\treturn mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );\n\t#endif\n}";

var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\treflectedLight.indirectDiffuse += lightMapIrradiance;\n#endif";

var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";

var lights_lambert_fragment = "LambertMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularStrength = specularStrength;";

var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\tvec3 getIBLIrradiance( const in vec3 normal ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n\t\t#if defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 reflectVec = reflect( - viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t\treturn envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n#endif";

var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";

var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";

var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n\tmaterial.ior = ior;\n\t#ifdef USE_SPECULAR\n\t\tfloat specularIntensityFactor = specularIntensity;\n\t\tvec3 specularColorFactor = specularColor;\n\t\t#ifdef USE_SPECULAR_COLORMAP\n\t\t\tspecularColorFactor *= texture2D( specularColorMap, vSpecularColorMapUv ).rgb;\n\t\t#endif\n\t\t#ifdef USE_SPECULAR_INTENSITYMAP\n\t\t\tspecularIntensityFactor *= texture2D( specularIntensityMap, vSpecularIntensityMapUv ).a;\n\t\t#endif\n\t\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n\t#else\n\t\tfloat specularIntensityFactor = 1.0;\n\t\tvec3 specularColorFactor = vec3( 1.0 );\n\t\tmaterial.specularF90 = 1.0;\n\t#endif\n\tmaterial.specularColor = mix( min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\tmaterial.clearcoatF0 = vec3( 0.04 );\n\tmaterial.clearcoatF90 = 1.0;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vClearcoatMapUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vClearcoatRoughnessMapUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_IRIDESCENCE\n\tmaterial.iridescence = iridescence;\n\tmaterial.iridescenceIOR = iridescenceIOR;\n\t#ifdef USE_IRIDESCENCEMAP\n\t\tmaterial.iridescence *= texture2D( iridescenceMap, vIridescenceMapUv ).r;\n\t#endif\n\t#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\t\tmaterial.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vIridescenceThicknessMapUv ).g + iridescenceThicknessMinimum;\n\t#else\n\t\tmaterial.iridescenceThickness = iridescenceThicknessMaximum;\n\t#endif\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheenColor;\n\t#ifdef USE_SHEEN_COLORMAP\n\t\tmaterial.sheenColor *= texture2D( sheenColorMap, vSheenColorMapUv ).rgb;\n\t#endif\n\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n\t#ifdef USE_SHEEN_ROUGHNESSMAP\n\t\tmaterial.sheenRoughness *= texture2D( sheenRoughnessMap, vSheenRoughnessMapUv ).a;\n\t#endif\n#endif";

var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n\t\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getIBLIrradiance( geometry.normal );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getIBLRadiance( geometry.viewDir, geometry.normal, material.roughness );\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatRadiance += getIBLRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness );\n\t#endif\n#endif";

var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";

var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";

var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";

var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";

var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";

var map_fragment = "#ifdef USE_MAP\n\tvec4 sampledDiffuseColor = texture2D( map, vMapUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\tsampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\n\t#endif\n\tdiffuseColor *= sampledDiffuseColor;\n#endif";

var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";

var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\t#if defined( USE_POINTS_UV )\n\t\tvec2 uv = vUv;\n\t#else\n\t\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n\t#endif\n#endif\n#ifdef USE_MAP\n\tdiffuseColor *= texture2D( map, uv );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";

var map_particle_pars_fragment = "#if defined( USE_POINTS_UV )\n\tvarying vec2 vUv;\n#else\n\t#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\t\tuniform mat3 uvTransform;\n\t#endif\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";

var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vMetalnessMapUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";

var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";

var morphcolor_vertex = "#if defined( USE_MORPHCOLORS ) && defined( MORPHTARGETS_TEXTURE )\n\tvColor *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t#if defined( USE_COLOR_ALPHA )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\n\t\t#elif defined( USE_COLOR )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];\n\t\t#endif\n\t}\n#endif";

var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\t\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\t\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\t\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n\t#endif\n#endif";

var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\t\tuniform sampler2DArray morphTargetsTexture;\n\t\tuniform ivec2 morphTargetsTextureSize;\n\t\tvec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\n\t\t\tint texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;\n\t\t\tint y = texelIndex / morphTargetsTextureSize.x;\n\t\t\tint x = texelIndex - y * morphTargetsTextureSize.x;\n\t\t\tivec3 morphUV = ivec3( x, y, morphTargetIndex );\n\t\t\treturn texelFetch( morphTargetsTexture, morphUV, 0 );\n\t\t}\n\t#else\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\tuniform float morphTargetInfluences[ 8 ];\n\t\t#else\n\t\t\tuniform float morphTargetInfluences[ 4 ];\n\t\t#endif\n\t#endif\n#endif";

var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\t#ifdef MORPHTARGETS_TEXTURE\n\t\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\n\t\t}\n\t#else\n\t\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\t\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\t\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\t\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t\t#ifndef USE_MORPHNORMALS\n\t\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t\t#endif\n\t#endif\n#endif";

var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = dFdx( vViewPosition );\n\tvec3 fdy = dFdy( vViewPosition );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal *= faceDirection;\n\t#endif\n#endif\n#ifdef USE_NORMALMAP_TANGENTSPACE\n\t#ifdef USE_TANGENT\n\t\tmat3 tbn = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n\t#else\n\t\tmat3 tbn = getTangentFrame( - vViewPosition, normal, vNormalMapUv );\n\t#endif\n\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n\t\ttbn[0] *= faceDirection;\n\t\ttbn[1] *= faceDirection;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\t#ifdef USE_TANGENT\n\t\tmat3 tbn2 = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n\t#else\n\t\tmat3 tbn2 = getTangentFrame( - vViewPosition, normal, vClearcoatNormalMapUv );\n\t#endif\n\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n\t\ttbn2[0] *= faceDirection;\n\t\ttbn2[1] *= faceDirection;\n\t#endif\n#endif\nvec3 geometryNormal = normal;";

var normal_fragment_maps = "#ifdef USE_NORMALMAP_OBJECTSPACE\n\tnormal = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( USE_NORMALMAP_TANGENTSPACE )\n\tvec3 mapN = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\tnormal = normalize( tbn * mapN );\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";

var normal_pars_fragment = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

var normal_pars_vertex = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";

var normal_vertex = "#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif";

var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef USE_NORMALMAP_OBJECTSPACE\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( USE_NORMALMAP_TANGENTSPACE ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tmat3 getTangentFrame( vec3 eye_pos, vec3 surf_norm, vec2 uv ) {\n\t\tvec3 q0 = dFdx( eye_pos.xyz );\n\t\tvec3 q1 = dFdy( eye_pos.xyz );\n\t\tvec2 st0 = dFdx( uv.st );\n\t\tvec2 st1 = dFdy( uv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : inversesqrt( det );\n\t\treturn mat3( T * scale, B * scale, N );\n\t}\n#endif";

var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";

var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\tclearcoatNormal = normalize( tbn2 * clearcoatMapN );\n#endif";

var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif";

var iridescence_pars_fragment = "#ifdef USE_IRIDESCENCEMAP\n\tuniform sampler2D iridescenceMap;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tuniform sampler2D iridescenceThicknessMap;\n#endif";

var output_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= material.transmissionAlpha + 0.1;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";

var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";

var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";

var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";

var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";

var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vRoughnessMapUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";

var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";

var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";

var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\tuniform highp sampler2D boneTexture;\n\tuniform int boneTextureSize;\n\tmat4 getBoneMatrix( const in float i ) {\n\t\tfloat j = i * 4.0;\n\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\ty = dy * ( y + 0.5 );\n\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\treturn bone;\n\t}\n#endif";

var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";

var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";

var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vSpecularMapUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";

var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";

var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";

var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tmaterial.transmission = transmission;\n\tmaterial.transmissionAlpha = 1.0;\n\tmaterial.thickness = thickness;\n\tmaterial.attenuationDistance = attenuationDistance;\n\tmaterial.attenuationColor = attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tmaterial.transmission *= texture2D( transmissionMap, vTransmissionMapUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tmaterial.thickness *= texture2D( thicknessMap, vThicknessMapUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition;\n\tvec3 v = normalize( cameraPosition - pos );\n\tvec3 n = inverseTransformDirection( normal, viewMatrix );\n\tvec4 transmission = getIBLVolumeRefraction(\n\t\tn, v, material.roughness, material.diffuseColor, material.specularColor, material.specularF90,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, material.ior, material.thickness,\n\t\tmaterial.attenuationColor, material.attenuationDistance );\n\tmaterial.transmissionAlpha = mix( material.transmissionAlpha, transmission.a, material.transmission );\n\ttotalDiffuse = mix( totalDiffuse, transmission.rgb, material.transmission );\n#endif";

var uv_pars_fragment = "#ifdef USE_UV\n\tvarying vec2 vUv;\n#endif\n#ifdef USE_MAP\n\tvarying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n\tvarying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n\tvarying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n\tvarying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n\tvarying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n\tvarying vec2 vNormalMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tvarying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n\tvarying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tvarying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tvarying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tvarying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tvarying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tvarying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tvarying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tvarying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tvarying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n\tvarying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tvarying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tvarying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tuniform mat3 transmissionMapTransform;\n\tvarying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n\tuniform mat3 thicknessMapTransform;\n\tvarying vec2 vThicknessMapUv;\n#endif";

var uv_pars_vertex = "#ifdef USE_UV\n\tvarying vec2 vUv;\n#endif\n#ifdef USE_UV2\n\tattribute vec2 uv2;\n#endif\n#ifdef USE_MAP\n\tuniform mat3 mapTransform;\n\tvarying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform mat3 alphaMapTransform;\n\tvarying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n\tuniform mat3 lightMapTransform;\n\tvarying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n\tuniform mat3 aoMapTransform;\n\tvarying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n\tuniform mat3 bumpMapTransform;\n\tvarying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n\tuniform mat3 normalMapTransform;\n\tvarying vec2 vNormalMapUv;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n\tuniform mat3 displacementMapTransform;\n\tvarying vec2 vDisplacementMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tuniform mat3 emissiveMapTransform;\n\tvarying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n\tuniform mat3 metalnessMapTransform;\n\tvarying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tuniform mat3 roughnessMapTransform;\n\tvarying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tuniform mat3 clearcoatMapTransform;\n\tvarying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform mat3 clearcoatNormalMapTransform;\n\tvarying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform mat3 clearcoatRoughnessMapTransform;\n\tvarying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tuniform mat3 sheenColorMapTransform;\n\tvarying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tuniform mat3 sheenRoughnessMapTransform;\n\tvarying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tuniform mat3 iridescenceMapTransform;\n\tvarying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tuniform mat3 iridescenceThicknessMapTransform;\n\tvarying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n\tuniform mat3 specularMapTransform;\n\tvarying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tuniform mat3 specularColorMapTransform;\n\tvarying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tuniform mat3 specularIntensityMapTransform;\n\tvarying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tuniform mat3 transmissionMapTransform;\n\tvarying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n\tuniform mat3 thicknessMapTransform;\n\tvarying vec2 vThicknessMapUv;\n#endif";

var uv_vertex = "#ifdef USE_UV\n\tvUv = vec3( uv, 1 ).xy;\n#endif\n#ifdef USE_MAP\n\tvMapUv = ( mapTransform * vec3( MAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ALPHAMAP\n\tvAlphaMapUv = ( alphaMapTransform * vec3( ALPHAMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_LIGHTMAP\n\tvLightMapUv = ( lightMapTransform * vec3( LIGHTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_AOMAP\n\tvAoMapUv = ( aoMapTransform * vec3( AOMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_BUMPMAP\n\tvBumpMapUv = ( bumpMapTransform * vec3( BUMPMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_NORMALMAP\n\tvNormalMapUv = ( normalMapTransform * vec3( NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n\tvDisplacementMapUv = ( displacementMapTransform * vec3( DISPLACEMENTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tvEmissiveMapUv = ( emissiveMapTransform * vec3( EMISSIVEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_METALNESSMAP\n\tvMetalnessMapUv = ( metalnessMapTransform * vec3( METALNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tvRoughnessMapUv = ( roughnessMapTransform * vec3( ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tvClearcoatMapUv = ( clearcoatMapTransform * vec3( CLEARCOATMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tvClearcoatNormalMapUv = ( clearcoatNormalMapTransform * vec3( CLEARCOAT_NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tvClearcoatRoughnessMapUv = ( clearcoatRoughnessMapTransform * vec3( CLEARCOAT_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tvIridescenceMapUv = ( iridescenceMapTransform * vec3( IRIDESCENCEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tvIridescenceThicknessMapUv = ( iridescenceThicknessMapTransform * vec3( IRIDESCENCE_THICKNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tvSheenColorMapUv = ( sheenColorMapTransform * vec3( SHEEN_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tvSheenRoughnessMapUv = ( sheenRoughnessMapTransform * vec3( SHEEN_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULARMAP\n\tvSpecularMapUv = ( specularMapTransform * vec3( SPECULARMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tvSpecularColorMapUv = ( specularColorMapTransform * vec3( SPECULAR_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tvSpecularIntensityMapUv = ( specularIntensityMapTransform * vec3( SPECULAR_INTENSITYMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tvTransmissionMapUv = ( transmissionMapTransform * vec3( TRANSMISSIONMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_THICKNESSMAP\n\tvThicknessMapUv = ( thicknessMapTransform * vec3( THICKNESSMAP_UV, 1 ) ).xy;\n#endif";

var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";

const vertex$h = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";

const fragment$h = "uniform sampler2D t2D;\nuniform float backgroundIntensity;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\ttexColor = vec4( mix( pow( texColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), texColor.rgb * 0.0773993808, vec3( lessThanEqual( texColor.rgb, vec3( 0.04045 ) ) ) ), texColor.w );\n\t#endif\n\ttexColor.rgb *= backgroundIntensity;\n\tgl_FragColor = texColor;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$g = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";

const fragment$g = "#ifdef ENVMAP_TYPE_CUBE\n\tuniform samplerCube envMap;\n#elif defined( ENVMAP_TYPE_CUBE_UV )\n\tuniform sampler2D envMap;\n#endif\nuniform float flipEnvMap;\nuniform float backgroundBlurriness;\nuniform float backgroundIntensity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 texColor = textureCube( envMap, vec3( flipEnvMap * vWorldDirection.x, vWorldDirection.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 texColor = textureCubeUV( envMap, vWorldDirection, backgroundBlurriness );\n\t#else\n\t\tvec4 texColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t#endif\n\ttexColor.rgb *= backgroundIntensity;\n\tgl_FragColor = texColor;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";

const fragment$f = "uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldDirection;\nvoid main() {\n\tvec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );\n\tgl_FragColor = texColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$e = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";

const fragment$e = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";

const vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";

const fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";

const vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";

const fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";

const vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

const fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

const vertex$a = "#include <common>\n#include <uv_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinbase_vertex>\n\t\t#include <skinnormal_vertex>\n\t\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n\t\treflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$9 = "#define LAMBERT\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$9 = "#define LAMBERT\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_lambert_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_lambert_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";

const fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t#else\n\t\tvec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvarying vec3 vViewPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";

const fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvarying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n\t#ifdef OPAQUE\n\t\tgl_FragColor.a = 1.0;\n\t#endif\n}";

const vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n\tvarying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition.xyz;\n#endif\n}";

const fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n\t#define IOR\n\t#define USE_SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n\tuniform float ior;\n#endif\n#ifdef USE_SPECULAR\n\tuniform float specularIntensity;\n\tuniform vec3 specularColor;\n\t#ifdef USE_SPECULAR_COLORMAP\n\t\tuniform sampler2D specularColorMap;\n\t#endif\n\t#ifdef USE_SPECULAR_INTENSITYMAP\n\t\tuniform sampler2D specularIntensityMap;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_IRIDESCENCE\n\tuniform float iridescence;\n\tuniform float iridescenceIOR;\n\tuniform float iridescenceThicknessMinimum;\n\tuniform float iridescenceThicknessMaximum;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheenColor;\n\tuniform float sheenRoughness;\n\t#ifdef USE_SHEEN_COLORMAP\n\t\tuniform sampler2D sheenColorMap;\n\t#endif\n\t#ifdef USE_SHEEN_ROUGHNESSMAP\n\t\tuniform sampler2D sheenRoughnessMap;\n\t#endif\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <iridescence_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <iridescence_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\t#ifdef USE_SHEEN\n\t\tfloat sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\n\t\toutgoingLight = outgoingLight * sheenEnergyComp + sheenSpecular;\n\t#endif\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNVcc = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n\t\toutgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + clearcoatSpecular * material.clearcoat;\n\t#endif\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";

const vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\n#ifdef USE_POINTS_UV\n\tvarying vec2 vUv;\n\tuniform mat3 uvTransform;\n#endif\nvoid main() {\n\t#ifdef USE_POINTS_UV\n\t\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\t#endif\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";

const fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";

const vertex$2 = "#include <common>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";

const fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <logdepthbuf_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\t#include <logdepthbuf_fragment>\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

const vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";

const fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <output_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";

const ShaderChunk = {
	alphamap_fragment: alphamap_fragment,
	alphamap_pars_fragment: alphamap_pars_fragment,
	alphatest_fragment: alphatest_fragment,
	alphatest_pars_fragment: alphatest_pars_fragment,
	aomap_fragment: aomap_fragment,
	aomap_pars_fragment: aomap_pars_fragment,
	begin_vertex: begin_vertex,
	beginnormal_vertex: beginnormal_vertex,
	bsdfs: bsdfs,
	iridescence_fragment: iridescence_fragment,
	bumpmap_pars_fragment: bumpmap_pars_fragment,
	clipping_planes_fragment: clipping_planes_fragment,
	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
	clipping_planes_vertex: clipping_planes_vertex,
	color_fragment: color_fragment,
	color_pars_fragment: color_pars_fragment,
	color_pars_vertex: color_pars_vertex,
	color_vertex: color_vertex,
	common: common,
	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
	defaultnormal_vertex: defaultnormal_vertex,
	displacementmap_pars_vertex: displacementmap_pars_vertex,
	displacementmap_vertex: displacementmap_vertex,
	emissivemap_fragment: emissivemap_fragment,
	emissivemap_pars_fragment: emissivemap_pars_fragment,
	encodings_fragment: encodings_fragment,
	encodings_pars_fragment: encodings_pars_fragment,
	envmap_fragment: envmap_fragment,
	envmap_common_pars_fragment: envmap_common_pars_fragment,
	envmap_pars_fragment: envmap_pars_fragment,
	envmap_pars_vertex: envmap_pars_vertex,
	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
	envmap_vertex: envmap_vertex,
	fog_vertex: fog_vertex,
	fog_pars_vertex: fog_pars_vertex,
	fog_fragment: fog_fragment,
	fog_pars_fragment: fog_pars_fragment,
	gradientmap_pars_fragment: gradientmap_pars_fragment,
	lightmap_fragment: lightmap_fragment,
	lightmap_pars_fragment: lightmap_pars_fragment,
	lights_lambert_fragment: lights_lambert_fragment,
	lights_lambert_pars_fragment: lights_lambert_pars_fragment,
	lights_pars_begin: lights_pars_begin,
	lights_toon_fragment: lights_toon_fragment,
	lights_toon_pars_fragment: lights_toon_pars_fragment,
	lights_phong_fragment: lights_phong_fragment,
	lights_phong_pars_fragment: lights_phong_pars_fragment,
	lights_physical_fragment: lights_physical_fragment,
	lights_physical_pars_fragment: lights_physical_pars_fragment,
	lights_fragment_begin: lights_fragment_begin,
	lights_fragment_maps: lights_fragment_maps,
	lights_fragment_end: lights_fragment_end,
	logdepthbuf_fragment: logdepthbuf_fragment,
	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
	logdepthbuf_vertex: logdepthbuf_vertex,
	map_fragment: map_fragment,
	map_pars_fragment: map_pars_fragment,
	map_particle_fragment: map_particle_fragment,
	map_particle_pars_fragment: map_particle_pars_fragment,
	metalnessmap_fragment: metalnessmap_fragment,
	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
	morphcolor_vertex: morphcolor_vertex,
	morphnormal_vertex: morphnormal_vertex,
	morphtarget_pars_vertex: morphtarget_pars_vertex,
	morphtarget_vertex: morphtarget_vertex,
	normal_fragment_begin: normal_fragment_begin,
	normal_fragment_maps: normal_fragment_maps,
	normal_pars_fragment: normal_pars_fragment,
	normal_pars_vertex: normal_pars_vertex,
	normal_vertex: normal_vertex,
	normalmap_pars_fragment: normalmap_pars_fragment,
	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
	clearcoat_pars_fragment: clearcoat_pars_fragment,
	iridescence_pars_fragment: iridescence_pars_fragment,
	output_fragment: output_fragment,
	packing: packing,
	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
	project_vertex: project_vertex,
	dithering_fragment: dithering_fragment,
	dithering_pars_fragment: dithering_pars_fragment,
	roughnessmap_fragment: roughnessmap_fragment,
	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
	shadowmap_pars_fragment: shadowmap_pars_fragment,
	shadowmap_pars_vertex: shadowmap_pars_vertex,
	shadowmap_vertex: shadowmap_vertex,
	shadowmask_pars_fragment: shadowmask_pars_fragment,
	skinbase_vertex: skinbase_vertex,
	skinning_pars_vertex: skinning_pars_vertex,
	skinning_vertex: skinning_vertex,
	skinnormal_vertex: skinnormal_vertex,
	specularmap_fragment: specularmap_fragment,
	specularmap_pars_fragment: specularmap_pars_fragment,
	tonemapping_fragment: tonemapping_fragment,
	tonemapping_pars_fragment: tonemapping_pars_fragment,
	transmission_fragment: transmission_fragment,
	transmission_pars_fragment: transmission_pars_fragment,
	uv_pars_fragment: uv_pars_fragment,
	uv_pars_vertex: uv_pars_vertex,
	uv_vertex: uv_vertex,
	worldpos_vertex: worldpos_vertex,

background_vert: vertex$h,
	background_frag: fragment$h,
	backgroundCube_vert: vertex$g,
	backgroundCube_frag: fragment$g,
	cube_vert: vertex$f,
	cube_frag: fragment$f,
	depth_vert: vertex$e,
	depth_frag: fragment$e,
	distanceRGBA_vert: vertex$d,
	distanceRGBA_frag: fragment$d,
	equirect_vert: vertex$c,
	equirect_frag: fragment$c,
	linedashed_vert: vertex$b,
	linedashed_frag: fragment$b,
	meshbasic_vert: vertex$a,
	meshbasic_frag: fragment$a,
	meshlambert_vert: vertex$9,
	meshlambert_frag: fragment$9,
	meshmatcap_vert: vertex$8,
	meshmatcap_frag: fragment$8,
	meshnormal_vert: vertex$7,
	meshnormal_frag: fragment$7,
	meshphong_vert: vertex$6,
	meshphong_frag: fragment$6,
	meshphysical_vert: vertex$5,
	meshphysical_frag: fragment$5,
	meshtoon_vert: vertex$4,
	meshtoon_frag: fragment$4,
	points_vert: vertex$3,
	points_frag: fragment$3,
	shadow_vert: vertex$2,
	shadow_frag: fragment$2,
	sprite_vert: vertex$1,
	sprite_frag: fragment$1
};

/**
 * Uniforms library for shared webgl shaders
 */

const UniformsLib = {

common: {

diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
		opacity: { value: 1.0 },

map: { value: null },
		mapTransform: { value: /*@__PURE__*/ new Matrix3() },

alphaMap: { value: null },
		alphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },

alphaTest: { value: 0 }

specularmap: {

specularMap: { value: null },
		specularMapTransform: { value: /*@__PURE__*/ new Matrix3() }

envmap: {

envMap: { value: null },
		flipEnvMap: { value: - 1 },
		reflectivity: { value: 1.0 }, // basic, lambert, phong
		ior: { value: 1.5 }, // physical
		refractionRatio: { value: 0.98 }, // basic, lambert, phong

aomap: {

aoMap: { value: null },
		aoMapIntensity: { value: 1 },
		aoMapTransform: { value: /*@__PURE__*/ new Matrix3() }

lightmap: {

lightMap: { value: null },
		lightMapIntensity: { value: 1 },
		lightMapTransform: { value: /*@__PURE__*/ new Matrix3() }

bumpmap: {

bumpMap: { value: null },
		bumpMapTransform: { value: /*@__PURE__*/ new Matrix3() },
		bumpScale: { value: 1 }

normalmap: {

normalMap: { value: null },
		normalMapTransform: { value: /*@__PURE__*/ new Matrix3() },
		normalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) }

displacementmap: {

displacementMap: { value: null },
		displacementMapTransform: { value: /*@__PURE__*/ new Matrix3() },
		displacementScale: { value: 1 },
		displacementBias: { value: 0 }

emissivemap: {

emissiveMap: { value: null },
		emissiveMapTransform: { value: /*@__PURE__*/ new Matrix3() }

metalnessmap: {

metalnessMap: { value: null },
		metalnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }

roughnessmap: {

roughnessMap: { value: null },
		roughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }

gradientmap: {

gradientMap: { value: null }

fog: {

fogDensity: { value: 0.00025 },
		fogNear: { value: 1 },
		fogFar: { value: 2000 },
		fogColor: { value: /*@__PURE__*/ new Color( 0xffffff ) }

lights: {

ambientLightColor: { value: [] },

lightProbe: { value: [] },

directionalLights: { value: [], properties: {
			direction: {},
			color: {}
		} },

directionalLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },

directionalShadowMap: { value: [] },
		directionalShadowMatrix: { value: [] },

spotLights: { value: [], properties: {
			color: {},
			position: {},
			direction: {},
			distance: {},
			coneCos: {},
			penumbraCos: {},
			decay: {}
		} },

spotLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {}
		} },

spotLightMap: { value: [] },
		spotShadowMap: { value: [] },
		spotLightMatrix: { value: [] },

pointLights: { value: [], properties: {
			color: {},
			position: {},
			decay: {},
			distance: {}
		} },

pointLightShadows: { value: [], properties: {
			shadowBias: {},
			shadowNormalBias: {},
			shadowRadius: {},
			shadowMapSize: {},
			shadowCameraNear: {},
			shadowCameraFar: {}
		} },

pointShadowMap: { value: [] },
		pointShadowMatrix: { value: [] },

hemisphereLights: { value: [], properties: {
			direction: {},
			skyColor: {},
			groundColor: {}
		} },

// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
		rectAreaLights: { value: [], properties: {
			color: {},
			position: {},
			width: {},
			height: {}
		} },

ltc_1: { value: null },
		ltc_2: { value: null }

points: {

diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
		opacity: { value: 1.0 },
		size: { value: 1.0 },
		scale: { value: 1.0 },
		map: { value: null },
		alphaMap: { value: null },
		alphaTest: { value: 0 },
		uvTransform: { value: /*@__PURE__*/ new Matrix3() }

sprite: {

diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
		opacity: { value: 1.0 },
		center: { value: /*@__PURE__*/ new Vector2( 0.5, 0.5 ) },
		rotation: { value: 0.0 },
		map: { value: null },
		mapTransform: { value: /*@__PURE__*/ new Matrix3() },
		alphaMap: { value: null },
		alphaTest: { value: 0 }

}

};

const ShaderLib = {

basic: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.fog
		] ),

vertexShader: ShaderChunk.meshbasic_vert,
		fragmentShader: ShaderChunk.meshbasic_frag

lambert: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.specularmap,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
			}
		] ),

vertexShader: ShaderChunk.meshlambert_vert,
		fragmentShader: ShaderChunk.meshlambert_frag

phong: {

vertexShader: ShaderChunk.meshphong_vert,
		fragmentShader: ShaderChunk.meshphong_frag

standard: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.envmap,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.roughnessmap,
			UniformsLib.metalnessmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },
				roughness: { value: 1.0 },
				metalness: { value: 0.0 },
				envMapIntensity: { value: 1 } // temporary
			}
		] ),

vertexShader: ShaderChunk.meshphysical_vert,
		fragmentShader: ShaderChunk.meshphysical_frag

toon: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.aomap,
			UniformsLib.lightmap,
			UniformsLib.emissivemap,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.gradientmap,
			UniformsLib.fog,
			UniformsLib.lights,
			{
				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
			}
		] ),

vertexShader: ShaderChunk.meshtoon_vert,
		fragmentShader: ShaderChunk.meshtoon_frag

matcap: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			UniformsLib.fog,
			{
				matcap: { value: null }
			}
		] ),

vertexShader: ShaderChunk.meshmatcap_vert,
		fragmentShader: ShaderChunk.meshmatcap_frag

points: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.points,
			UniformsLib.fog
		] ),

vertexShader: ShaderChunk.points_vert,
		fragmentShader: ShaderChunk.points_frag

dashed: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.fog,
			{
				scale: { value: 1 },
				dashSize: { value: 1 },
				totalSize: { value: 2 }
			}
		] ),

vertexShader: ShaderChunk.linedashed_vert,
		fragmentShader: ShaderChunk.linedashed_frag

depth: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap
		] ),

vertexShader: ShaderChunk.depth_vert,
		fragmentShader: ShaderChunk.depth_frag

normal: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.bumpmap,
			UniformsLib.normalmap,
			UniformsLib.displacementmap,
			{
				opacity: { value: 1.0 }
			}
		] ),

vertexShader: ShaderChunk.meshnormal_vert,
		fragmentShader: ShaderChunk.meshnormal_frag

sprite: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.sprite,
			UniformsLib.fog
		] ),

vertexShader: ShaderChunk.sprite_vert,
		fragmentShader: ShaderChunk.sprite_frag

background: {

uniforms: {
			uvTransform: { value: /*@__PURE__*/ new Matrix3() },
			t2D: { value: null },
			backgroundIntensity: { value: 1 }
		},

vertexShader: ShaderChunk.background_vert,
		fragmentShader: ShaderChunk.background_frag

backgroundCube: {

uniforms: {
			envMap: { value: null },
			flipEnvMap: { value: - 1 },
			backgroundBlurriness: { value: 0 },
			backgroundIntensity: { value: 1 }
		},

vertexShader: ShaderChunk.backgroundCube_vert,
		fragmentShader: ShaderChunk.backgroundCube_frag

cube: {

uniforms: {
			tCube: { value: null },
			tFlip: { value: - 1 },
			opacity: { value: 1.0 }
		},

vertexShader: ShaderChunk.cube_vert,
		fragmentShader: ShaderChunk.cube_frag

equirect: {

uniforms: {
			tEquirect: { value: null },
		},

vertexShader: ShaderChunk.equirect_vert,
		fragmentShader: ShaderChunk.equirect_frag

distanceRGBA: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.common,
			UniformsLib.displacementmap,
			{
				referencePosition: { value: /*@__PURE__*/ new Vector3() },
				nearDistance: { value: 1 },
				farDistance: { value: 1000 }
			}
		] ),

vertexShader: ShaderChunk.distanceRGBA_vert,
		fragmentShader: ShaderChunk.distanceRGBA_frag

shadow: {

uniforms: /*@__PURE__*/ mergeUniforms( [
			UniformsLib.lights,
			UniformsLib.fog,
			{
				color: { value: /*@__PURE__*/ new Color( 0x00000 ) },
				opacity: { value: 1.0 }
			},
		] ),

vertexShader: ShaderChunk.shadow_vert,
		fragmentShader: ShaderChunk.shadow_frag

}

};

ShaderLib.physical = {

uniforms: /*@__PURE__*/ mergeUniforms( [
		ShaderLib.standard.uniforms,
		{
			clearcoat: { value: 0 },
			clearcoatMap: { value: null },
			clearcoatMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			clearcoatNormalMap: { value: null },
			clearcoatNormalMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			clearcoatNormalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) },
			clearcoatRoughness: { value: 0 },
			clearcoatRoughnessMap: { value: null },
			clearcoatRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			iridescence: { value: 0 },
			iridescenceMap: { value: null },
			iridescenceMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			iridescenceIOR: { value: 1.3 },
			iridescenceThicknessMinimum: { value: 100 },
			iridescenceThicknessMaximum: { value: 400 },
			iridescenceThicknessMap: { value: null },
			iridescenceThicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			sheen: { value: 0 },
			sheenColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
			sheenColorMap: { value: null },
			sheenColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			sheenRoughness: { value: 1 },
			sheenRoughnessMap: { value: null },
			sheenRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			transmission: { value: 0 },
			transmissionMap: { value: null },
			transmissionMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			transmissionSamplerSize: { value: /*@__PURE__*/ new Vector2() },
			transmissionSamplerMap: { value: null },
			thickness: { value: 0 },
			thicknessMap: { value: null },
			thicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			attenuationDistance: { value: 0 },
			attenuationColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
			specularColor: { value: /*@__PURE__*/ new Color( 1, 1, 1 ) },
			specularColorMap: { value: null },
			specularColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },
			specularIntensity: { value: 1 },
			specularIntensityMap: { value: null },
			specularIntensityMapTransform: { value: /*@__PURE__*/ new Matrix3() }
		}
	] ),

vertexShader: ShaderChunk.meshphysical_vert,
	fragmentShader: ShaderChunk.meshphysical_frag

};

const _rgb = { r: 0, b: 0, g: 0 };

function WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha, premultipliedAlpha ) {

const clearColor = new Color( 0x000000 );
	let clearAlpha = alpha === true ? 0 : 1;

let planeMesh;
	let boxMesh;

let currentBackground = null;
	let currentBackgroundVersion = 0;
	let currentTonemapping = null;

function render( renderList, scene ) {

let forceClear = false;
		let background = scene.isScene === true ? scene.background : null;

if ( background && background.isTexture ) {

const usePMREM = scene.backgroundBlurriness > 0; // use PMREM if the user wants to blur the background
			background = ( usePMREM ? cubeuvmaps : cubemaps ).get( background );

}

// Ignore background in AR
		// TODO: Reconsider this.

const xr = renderer.xr;
		const session = xr.getSession && xr.getSession();

if ( session && session.environmentBlendMode === 'additive' ) {

background = null;

}

if ( background === null ) {

setClear( clearColor, clearAlpha );

} else if ( background && background.isColor ) {

setClear( background, 1 );
			forceClear = true;

}

if ( renderer.autoClear || forceClear ) {

renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );

}

if ( background && ( background.isCubeTexture || background.mapping === CubeUVReflectionMapping ) ) {

if ( boxMesh === undefined ) {

boxMesh = new Mesh(
					new BoxGeometry( 1, 1, 1 ),
					new ShaderMaterial( {
						name: 'BackgroundCubeMaterial',
						uniforms: cloneUniforms( ShaderLib.backgroundCube.uniforms ),
						vertexShader: ShaderLib.backgroundCube.vertexShader,
						fragmentShader: ShaderLib.backgroundCube.fragmentShader,
						side: BackSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);

boxMesh.geometry.deleteAttribute( 'normal' );
				boxMesh.geometry.deleteAttribute( 'uv' );

boxMesh.onBeforeRender = function ( renderer, scene, camera ) {

this.matrixWorld.copyPosition( camera.matrixWorld );

};

// add "envMap" material property so the renderer can evaluate it like for built-in materials
				Object.defineProperty( boxMesh.material, 'envMap', {

get: function () {

return this.uniforms.envMap.value;

}

} );

objects.update( boxMesh );

}

boxMesh.material.uniforms.envMap.value = background;
			boxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background.isRenderTargetTexture === false ) ? - 1 : 1;
			boxMesh.material.uniforms.backgroundBlurriness.value = scene.backgroundBlurriness;
			boxMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
			boxMesh.material.toneMapped = ( background.encoding === sRGBEncoding ) ? false : true;

if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {

boxMesh.material.needsUpdate = true;

currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;

}

boxMesh.layers.enableAll();

// push to the pre-sorted opaque render list
			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );

} else if ( background && background.isTexture ) {

if ( planeMesh === undefined ) {

planeMesh = new Mesh(
					new PlaneGeometry( 2, 2 ),
					new ShaderMaterial( {
						name: 'BackgroundMaterial',
						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
						vertexShader: ShaderLib.background.vertexShader,
						fragmentShader: ShaderLib.background.fragmentShader,
						side: FrontSide,
						depthTest: false,
						depthWrite: false,
						fog: false
					} )
				);

planeMesh.geometry.deleteAttribute( 'normal' );

// add "map" material property so the renderer can evaluate it like for built-in materials
				Object.defineProperty( planeMesh.material, 'map', {

get: function () {

return this.uniforms.t2D.value;

}

} );

objects.update( planeMesh );

}

planeMesh.material.uniforms.t2D.value = background;
			planeMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
			planeMesh.material.toneMapped = ( background.encoding === sRGBEncoding ) ? false : true;

if ( background.matrixAutoUpdate === true ) {

background.updateMatrix();

}

planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );

if ( currentBackground !== background ||
				currentBackgroundVersion !== background.version ||
				currentTonemapping !== renderer.toneMapping ) {

planeMesh.material.needsUpdate = true;

currentBackground = background;
				currentBackgroundVersion = background.version;
				currentTonemapping = renderer.toneMapping;

}

planeMesh.layers.enableAll();

// push to the pre-sorted opaque render list
			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );

}

function setClear( color, alpha ) {

color.getRGB( _rgb, getUnlitUniformColorSpace( renderer ) );

state.buffers.color.setClear( _rgb.r, _rgb.g, _rgb.b, alpha, premultipliedAlpha );

}

return {

getClearColor: function () {

return clearColor;

},
		setClearColor: function ( color, alpha = 1 ) {

clearColor.set( color );
			clearAlpha = alpha;
			setClear( clearColor, clearAlpha );

},
		getClearAlpha: function () {

return clearAlpha;

},
		setClearAlpha: function ( alpha ) {

clearAlpha = alpha;
			setClear( clearColor, clearAlpha );

},
		render: render

};

}

function WebGLBindingStates( gl, extensions, attributes, capabilities ) {

const maxVertexAttributes = gl.getParameter( 34921 );

const extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );
	const vaoAvailable = capabilities.isWebGL2 || extension !== null;

const bindingStates = {};

const defaultState = createBindingState( null );
	let currentState = defaultState;
	let forceUpdate = false;

function setup( object, material, program, geometry, index ) {

let updateBuffers = false;

if ( vaoAvailable ) {

const state = getBindingState( geometry, program, material );

if ( currentState !== state ) {

currentState = state;
				bindVertexArrayObject( currentState.object );

}

updateBuffers = needsUpdate( object, geometry, program, index );

if ( updateBuffers ) saveCache( object, geometry, program, index );

} else {

const wireframe = ( material.wireframe === true );

if ( currentState.geometry !== geometry.id ||
				currentState.program !== program.id ||
				currentState.wireframe !== wireframe ) {

currentState.geometry = geometry.id;
				currentState.program = program.id;
				currentState.wireframe = wireframe;

updateBuffers = true;

}

if ( index !== null ) {

attributes.update( index, 34963 );

}

if ( updateBuffers || forceUpdate ) {

forceUpdate = false;

setupVertexAttributes( object, material, program, geometry );

if ( index !== null ) {

gl.bindBuffer( 34963, attributes.get( index ).buffer );

}

function createVertexArrayObject() {

if ( capabilities.isWebGL2 ) return gl.createVertexArray();

return extension.createVertexArrayOES();

}

function bindVertexArrayObject( vao ) {

if ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );

return extension.bindVertexArrayOES( vao );

}

function deleteVertexArrayObject( vao ) {

if ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );

return extension.deleteVertexArrayOES( vao );

}

function getBindingState( geometry, program, material ) {

const wireframe = ( material.wireframe === true );

let programMap = bindingStates[ geometry.id ];

if ( programMap === undefined ) {

programMap = {};
			bindingStates[ geometry.id ] = programMap;

}

let stateMap = programMap[ program.id ];

if ( stateMap === undefined ) {

stateMap = {};
			programMap[ program.id ] = stateMap;

}

let state = stateMap[ wireframe ];

if ( state === undefined ) {

state = createBindingState( createVertexArrayObject() );
			stateMap[ wireframe ] = state;

}

return state;

}

function createBindingState( vao ) {

const newAttributes = [];
		const enabledAttributes = [];
		const attributeDivisors = [];

for ( let i = 0; i < maxVertexAttributes; i ++ ) {

newAttributes[ i ] = 0;
			enabledAttributes[ i ] = 0;
			attributeDivisors[ i ] = 0;

}

return {

// for backward compatibility on non-VAO support browser
			geometry: null,
			program: null,
			wireframe: false,

newAttributes: newAttributes,
			enabledAttributes: enabledAttributes,
			attributeDivisors: attributeDivisors,
			object: vao,
			attributes: {},
			index: null

};

}

function needsUpdate( object, geometry, program, index ) {

const cachedAttributes = currentState.attributes;
		const geometryAttributes = geometry.attributes;

let attributesNum = 0;

const programAttributes = program.getAttributes();

for ( const name in programAttributes ) {

const programAttribute = programAttributes[ name ];

if ( programAttribute.location >= 0 ) {

const cachedAttribute = cachedAttributes[ name ];
				let geometryAttribute = geometryAttributes[ name ];

if ( geometryAttribute === undefined ) {

if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

}

if ( cachedAttribute === undefined ) return true;

if ( cachedAttribute.attribute !== geometryAttribute ) return true;

if ( geometryAttribute && cachedAttribute.data !== geometryAttribute.data ) return true;

attributesNum ++;

}

if ( currentState.attributesNum !== attributesNum ) return true;

if ( currentState.index !== index ) return true;

return false;

}

function saveCache( object, geometry, program, index ) {

const cache = {};
		const attributes = geometry.attributes;
		let attributesNum = 0;

const programAttributes = program.getAttributes();

for ( const name in programAttributes ) {

const programAttribute = programAttributes[ name ];

if ( programAttribute.location >= 0 ) {

let attribute = attributes[ name ];

if ( attribute === undefined ) {

if ( name === 'instanceMatrix' && object.instanceMatrix ) attribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) attribute = object.instanceColor;

}

const data = {};
				data.attribute = attribute;

if ( attribute && attribute.data ) {

data.data = attribute.data;

}

cache[ name ] = data;

attributesNum ++;

}

currentState.attributes = cache;
		currentState.attributesNum = attributesNum;

currentState.index = index;

}

function initAttributes() {

const newAttributes = currentState.newAttributes;

for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {

newAttributes[ i ] = 0;

}

function enableAttribute( attribute ) {

enableAttributeAndDivisor( attribute, 0 );

}

function enableAttributeAndDivisor( attribute, meshPerAttribute ) {

const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;
		const attributeDivisors = currentState.attributeDivisors;

newAttributes[ attribute ] = 1;

if ( enabledAttributes[ attribute ] === 0 ) {

gl.enableVertexAttribArray( attribute );
			enabledAttributes[ attribute ] = 1;

}

if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {

const extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );

extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
			attributeDivisors[ attribute ] = meshPerAttribute;

}

function disableUnusedAttributes() {

const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;

for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {

if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {

gl.disableVertexAttribArray( i );
				enabledAttributes[ i ] = 0;

}

function vertexAttribPointer( index, size, type, normalized, stride, offset ) {

if ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {

gl.vertexAttribIPointer( index, size, type, stride, offset );

} else {

gl.vertexAttribPointer( index, size, type, normalized, stride, offset );

}

function setupVertexAttributes( object, material, program, geometry ) {

if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {

if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;

}

initAttributes();

const geometryAttributes = geometry.attributes;

const programAttributes = program.getAttributes();

const materialDefaultAttributeValues = material.defaultAttributeValues;

for ( const name in programAttributes ) {

const programAttribute = programAttributes[ name ];

if ( programAttribute.location >= 0 ) {

let geometryAttribute = geometryAttributes[ name ];

if ( geometryAttribute === undefined ) {

}

if ( geometryAttribute !== undefined ) {

const normalized = geometryAttribute.normalized;
					const size = geometryAttribute.itemSize;

const attribute = attributes.get( geometryAttribute );

// TODO Attribute may not be available on context restore

if ( attribute === undefined ) continue;

const buffer = attribute.buffer;
					const type = attribute.type;
					const bytesPerElement = attribute.bytesPerElement;

if ( geometryAttribute.isInterleavedBufferAttribute ) {

const data = geometryAttribute.data;
						const stride = data.stride;
						const offset = geometryAttribute.offset;

if ( data.isInstancedInterleavedBuffer ) {

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

enableAttributeAndDivisor( programAttribute.location + i, data.meshPerAttribute );

}

if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

geometry._maxInstanceCount = data.meshPerAttribute * data.count;

}

} else {

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

enableAttribute( programAttribute.location + i );

}

gl.bindBuffer( 34962, buffer );

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

vertexAttribPointer(
								programAttribute.location + i,
								size / programAttribute.locationSize,
								type,
								normalized,
								stride * bytesPerElement,
								( offset + ( size / programAttribute.locationSize ) * i ) * bytesPerElement
							);

}

} else {

if ( geometryAttribute.isInstancedBufferAttribute ) {

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

enableAttributeAndDivisor( programAttribute.location + i, geometryAttribute.meshPerAttribute );

}

if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {

geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;

}

} else {

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

enableAttribute( programAttribute.location + i );

}

gl.bindBuffer( 34962, buffer );

for ( let i = 0; i < programAttribute.locationSize; i ++ ) {

vertexAttribPointer(
								programAttribute.location + i,
								size / programAttribute.locationSize,
								type,
								normalized,
								size * bytesPerElement,
								( size / programAttribute.locationSize ) * i * bytesPerElement
							);

}

} else if ( materialDefaultAttributeValues !== undefined ) {

const value = materialDefaultAttributeValues[ name ];

if ( value !== undefined ) {

switch ( value.length ) {

case 2:
								gl.vertexAttrib2fv( programAttribute.location, value );
								break;

case 3:
								gl.vertexAttrib3fv( programAttribute.location, value );
								break;

case 4:
								gl.vertexAttrib4fv( programAttribute.location, value );
								break;

default:
								gl.vertexAttrib1fv( programAttribute.location, value );

}

disableUnusedAttributes();

}

function dispose() {

reset();

for ( const geometryId in bindingStates ) {

const programMap = bindingStates[ geometryId ];

for ( const programId in programMap ) {

const stateMap = programMap[ programId ];

for ( const wireframe in stateMap ) {

deleteVertexArrayObject( stateMap[ wireframe ].object );

delete stateMap[ wireframe ];

}

delete programMap[ programId ];

}

delete bindingStates[ geometryId ];

}

function releaseStatesOfGeometry( geometry ) {

if ( bindingStates[ geometry.id ] === undefined ) return;

const programMap = bindingStates[ geometry.id ];

for ( const programId in programMap ) {

const stateMap = programMap[ programId ];

for ( const wireframe in stateMap ) {

deleteVertexArrayObject( stateMap[ wireframe ].object );

delete stateMap[ wireframe ];

}

delete programMap[ programId ];

}

delete bindingStates[ geometry.id ];

}

function releaseStatesOfProgram( program ) {

for ( const geometryId in bindingStates ) {

const programMap = bindingStates[ geometryId ];

if ( programMap[ program.id ] === undefined ) continue;

const stateMap = programMap[ program.id ];

for ( const wireframe in stateMap ) {

deleteVertexArrayObject( stateMap[ wireframe ].object );

delete stateMap[ wireframe ];

}

delete programMap[ program.id ];

}

function reset() {

resetDefaultState();
		forceUpdate = true;

if ( currentState === defaultState ) return;

currentState = defaultState;
		bindVertexArrayObject( currentState.object );

}

// for backward-compatibility

function resetDefaultState() {

defaultState.geometry = null;
		defaultState.program = null;
		defaultState.wireframe = false;

}

return {

setup: setup,
		reset: reset,
		resetDefaultState: resetDefaultState,
		dispose: dispose,
		releaseStatesOfGeometry: releaseStatesOfGeometry,
		releaseStatesOfProgram: releaseStatesOfProgram,

initAttributes: initAttributes,
		enableAttribute: enableAttribute,
		disableUnusedAttributes: disableUnusedAttributes

};

}

function WebGLBufferRenderer( gl, extensions, info, capabilities ) {

const isWebGL2 = capabilities.isWebGL2;

let mode;

function setMode( value ) {

mode = value;

}

function render( start, count ) {

gl.drawArrays( mode, start, count );

info.update( count, mode, 1 );

}

function renderInstances( start, count, primcount ) {

if ( primcount === 0 ) return;

let extension, methodName;

if ( isWebGL2 ) {

extension = gl;
			methodName = 'drawArraysInstanced';

} else {

extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawArraysInstancedANGLE';

if ( extension === null ) {

console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;

}

extension[ methodName ]( mode, start, count, primcount );

info.update( count, mode, primcount );

}

this.setMode = setMode;
	this.render = render;
	this.renderInstances = renderInstances;

}

function WebGLCapabilities( gl, extensions, parameters ) {

let maxAnisotropy;

function getMaxAnisotropy() {

if ( maxAnisotropy !== undefined ) return maxAnisotropy;

if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

} else {

maxAnisotropy = 0;

}

return maxAnisotropy;

}

function getMaxPrecision( precision ) {

if ( precision === 'highp' ) {

if ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {

return 'highp';

}

precision = 'mediump';

}

if ( precision === 'mediump' ) {

if ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&
				gl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {

return 'mediump';

}

return 'lowp';

}

const isWebGL2 = typeof WebGL2RenderingContext !== 'undefined' && gl.constructor.name === 'WebGL2RenderingContext';

let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
	const maxPrecision = getMaxPrecision( precision );

if ( maxPrecision !== precision ) {

console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
		precision = maxPrecision;

}

const drawBuffers = isWebGL2 || extensions.has( 'WEBGL_draw_buffers' );

const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;

const maxTextures = gl.getParameter( 34930 );
	const maxVertexTextures = gl.getParameter( 35660 );
	const maxTextureSize = gl.getParameter( 3379 );
	const maxCubemapSize = gl.getParameter( 34076 );

const maxAttributes = gl.getParameter( 34921 );
	const maxVertexUniforms = gl.getParameter( 36347 );
	const maxVaryings = gl.getParameter( 36348 );
	const maxFragmentUniforms = gl.getParameter( 36349 );

const vertexTextures = maxVertexTextures > 0;
	const floatFragmentTextures = isWebGL2 || extensions.has( 'OES_texture_float' );
	const floatVertexTextures = vertexTextures && floatFragmentTextures;

const maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;

return {

isWebGL2: isWebGL2,

drawBuffers: drawBuffers,

getMaxAnisotropy: getMaxAnisotropy,
		getMaxPrecision: getMaxPrecision,

precision: precision,
		logarithmicDepthBuffer: logarithmicDepthBuffer,

maxTextures: maxTextures,
		maxVertexTextures: maxVertexTextures,
		maxTextureSize: maxTextureSize,
		maxCubemapSize: maxCubemapSize,

maxAttributes: maxAttributes,
		maxVertexUniforms: maxVertexUniforms,
		maxVaryings: maxVaryings,
		maxFragmentUniforms: maxFragmentUniforms,

vertexTextures: vertexTextures,
		floatFragmentTextures: floatFragmentTextures,
		floatVertexTextures: floatVertexTextures,

maxSamples: maxSamples

};

}

function WebGLClipping( properties ) {

const scope = this;

let globalState = null,
		numGlobalPlanes = 0,
		localClippingEnabled = false,
		renderingShadows = false;

const plane = new Plane(),
		viewNormalMatrix = new Matrix3(),

uniform = { value: null, needsUpdate: false };

this.uniform = uniform;
	this.numPlanes = 0;
	this.numIntersection = 0;

this.init = function ( planes, enableLocalClipping ) {

const enabled =
			planes.length !== 0 ||
			enableLocalClipping ||
			// enable state of previous frame - the clipping code has to
			// run another frame in order to reset the state:
			numGlobalPlanes !== 0 ||
			localClippingEnabled;

localClippingEnabled = enableLocalClipping;

numGlobalPlanes = planes.length;

return enabled;

};

this.beginShadows = function () {

renderingShadows = true;
		projectPlanes( null );

};

this.endShadows = function () {

renderingShadows = false;

};

this.setGlobalState = function ( planes, camera ) {

globalState = projectPlanes( planes, camera, 0 );

};

this.setState = function ( material, camera, useCache ) {

const planes = material.clippingPlanes,
			clipIntersection = material.clipIntersection,
			clipShadows = material.clipShadows;

const materialProperties = properties.get( material );

if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {

// there's no local clipping

if ( renderingShadows ) {

// there's no global clipping

projectPlanes( null );

} else {

resetGlobalState();

}

} else {

const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
				lGlobal = nGlobal * 4;

let dstArray = materialProperties.clippingState || null;

uniform.value = dstArray; // ensure unique state

dstArray = projectPlanes( planes, camera, lGlobal, useCache );

for ( let i = 0; i !== lGlobal; ++ i ) {

dstArray[ i ] = globalState[ i ];

}

materialProperties.clippingState = dstArray;
			this.numIntersection = clipIntersection ? this.numPlanes : 0;
			this.numPlanes += nGlobal;

}

};

function resetGlobalState() {

if ( uniform.value !== globalState ) {

uniform.value = globalState;
			uniform.needsUpdate = numGlobalPlanes > 0;

}

scope.numPlanes = numGlobalPlanes;
		scope.numIntersection = 0;

}

function projectPlanes( planes, camera, dstOffset, skipTransform ) {

const nPlanes = planes !== null ? planes.length : 0;
		let dstArray = null;

if ( nPlanes !== 0 ) {

dstArray = uniform.value;

if ( skipTransform !== true || dstArray === null ) {

const flatSize = dstOffset + nPlanes * 4,
					viewMatrix = camera.matrixWorldInverse;

viewNormalMatrix.getNormalMatrix( viewMatrix );

if ( dstArray === null || dstArray.length < flatSize ) {

dstArray = new Float32Array( flatSize );

}

for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {

plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );

plane.normal.toArray( dstArray, i4 );
					dstArray[ i4 + 3 ] = plane.constant;

}

uniform.value = dstArray;
			uniform.needsUpdate = true;

}

scope.numPlanes = nPlanes;
		scope.numIntersection = 0;

return dstArray;

}

function WebGLCubeMaps( renderer ) {

let cubemaps = new WeakMap();

function mapTextureMapping( texture, mapping ) {

if ( mapping === EquirectangularReflectionMapping ) {

texture.mapping = CubeReflectionMapping;

} else if ( mapping === EquirectangularRefractionMapping ) {

texture.mapping = CubeRefractionMapping;

}

return texture;

}

function get( texture ) {

if ( texture && texture.isTexture && texture.isRenderTargetTexture === false ) {

const mapping = texture.mapping;

if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {

if ( cubemaps.has( texture ) ) {

const cubemap = cubemaps.get( texture ).texture;
					return mapTextureMapping( cubemap, texture.mapping );

} else {

const image = texture.image;

if ( image && image.height > 0 ) {

const renderTarget = new WebGLCubeRenderTarget( image.height / 2 );
						renderTarget.fromEquirectangularTexture( renderer, texture );
						cubemaps.set( texture, renderTarget );

texture.addEventListener( 'dispose', onTextureDispose );

return mapTextureMapping( renderTarget.texture, texture.mapping );

} else {

// image not yet ready. try the conversion next frame

return null;

}

return texture;

}

function onTextureDispose( event ) {

const texture = event.target;

texture.removeEventListener( 'dispose', onTextureDispose );

const cubemap = cubemaps.get( texture );

if ( cubemap !== undefined ) {

cubemaps.delete( texture );
			cubemap.dispose();

}

function dispose() {

cubemaps = new WeakMap();

}

return {
		get: get,
		dispose: dispose
	};

}

class OrthographicCamera extends Camera {

constructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {

super();

this.isOrthographicCamera = true;

this.type = 'OrthographicCamera';

this.zoom = 1;
		this.view = null;

this.left = left;
		this.right = right;
		this.top = top;
		this.bottom = bottom;

this.near = near;
		this.far = far;

this.updateProjectionMatrix();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.left = source.left;
		this.right = source.right;
		this.top = source.top;
		this.bottom = source.bottom;
		this.near = source.near;
		this.far = source.far;

this.zoom = source.zoom;
		this.view = source.view === null ? null : Object.assign( {}, source.view );

return this;

}

setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

if ( this.view === null ) {

this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};

}

this.updateProjectionMatrix();

}

clearViewOffset() {

if ( this.view !== null ) {

this.view.enabled = false;

}

this.updateProjectionMatrix();

}

updateProjectionMatrix() {

const dx = ( this.right - this.left ) / ( 2 * this.zoom );
		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
		const cx = ( this.right + this.left ) / 2;
		const cy = ( this.top + this.bottom ) / 2;

let left = cx - dx;
		let right = cx + dx;
		let top = cy + dy;
		let bottom = cy - dy;

if ( this.view !== null && this.view.enabled ) {

const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;

left += scaleW * this.view.offsetX;
			right = left + scaleW * this.view.width;
			top -= scaleH * this.view.offsetY;
			bottom = top - scaleH * this.view.height;

}

this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );

this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.object.zoom = this.zoom;
		data.object.left = this.left;
		data.object.right = this.right;
		data.object.top = this.top;
		data.object.bottom = this.bottom;
		data.object.near = this.near;
		data.object.far = this.far;

if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );

return data;

}

const LOD_MIN = 4;

// The standard deviations (radians) associated with the extra mips. These are
// chosen to approximate a Trowbridge-Reitz distribution function times the
// geometric shadowing function. These sigma values squared must match the
// variance #defines in cube_uv_reflection_fragment.glsl.js.
const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];

// The maximum length of the blur for loop. Smaller sigmas will use fewer
// samples and exit early, but not recompile the shader.
const MAX_SAMPLES = 20;

const _flatCamera = /*@__PURE__*/ new OrthographicCamera();
const _clearColor = /*@__PURE__*/ new Color();
let _oldTarget = null;

// Golden Ratio
const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
const INV_PHI = 1 / PHI;

// Vertices of a dodecahedron (except the opposites, which represent the
// same axis), used as axis directions evenly spread on a sphere.
const _axisDirections = [
	/*@__PURE__*/ new Vector3( 1, 1, 1 ),
	/*@__PURE__*/ new Vector3( - 1, 1, 1 ),
	/*@__PURE__*/ new Vector3( 1, 1, - 1 ),
	/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),
	/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),
	/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),
	/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),
	/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),
	/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),
	/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ) ];

/**
 * This class generates a Prefiltered, Mipmapped Radiance Environment Map
 * (PMREM) from a cubeMap environment texture. This allows different levels of
 * blur to be quickly accessed based on material roughness. It is packed into a
 * special CubeUV format that allows us to perform custom interpolation so that
 * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
 * chain, it only goes down to the LOD_MIN level (above), and then creates extra
 * even more filtered 'mips' at the same LOD_MIN resolution, associated with
 * higher roughness levels. In this way we maintain resolution to smoothly
 * interpolate diffuse lighting while limiting sampling computation.
 *
 * Paper: Fast, Accurate Image-Based Lighting
 * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
*/

class PMREMGenerator {

constructor( renderer ) {

this._renderer = renderer;
		this._pingPongRenderTarget = null;

this._lodMax = 0;
		this._cubeSize = 0;
		this._lodPlanes = [];
		this._sizeLods = [];
		this._sigmas = [];

this._blurMaterial = null;
		this._cubemapMaterial = null;
		this._equirectMaterial = null;

this._compileMaterial( this._blurMaterial );

}

/**
	 * Generates a PMREM from a supplied Scene, which can be faster than using an
	 * image if networking bandwidth is low. Optional sigma specifies a blur radius
	 * in radians to be applied to the scene before PMREM generation. Optional near
	 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
	 * is placed at the origin).
	 */
	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {

_oldTarget = this._renderer.getRenderTarget();

this._setSize( 256 );

const cubeUVRenderTarget = this._allocateTargets();
		cubeUVRenderTarget.depthBuffer = true;

this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );

if ( sigma > 0 ) {

this._blur( cubeUVRenderTarget, 0, 0, sigma );

}

this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );

return cubeUVRenderTarget;

}

/**
	 * Generates a PMREM from an equirectangular texture, which can be either LDR
	 * or HDR. The ideal input image size is 1k (1024 x 512),
	 * as this matches best with the 256 x 256 cubemap output.
	 */
	fromEquirectangular( equirectangular, renderTarget = null ) {

return this._fromTexture( equirectangular, renderTarget );

}

/**
	 * Generates a PMREM from an cubemap texture, which can be either LDR
	 * or HDR. The ideal input cube size is 256 x 256,
	 * as this matches best with the 256 x 256 cubemap output.
	 */
	fromCubemap( cubemap, renderTarget = null ) {

return this._fromTexture( cubemap, renderTarget );

}

/**
	 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
	 * your texture's network fetch for increased concurrency.
	 */
	compileCubemapShader() {

if ( this._cubemapMaterial === null ) {

this._cubemapMaterial = _getCubemapMaterial();
			this._compileMaterial( this._cubemapMaterial );

}

/**
	 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
	 * your texture's network fetch for increased concurrency.
	 */
	compileEquirectangularShader() {

if ( this._equirectMaterial === null ) {

this._equirectMaterial = _getEquirectMaterial();
			this._compileMaterial( this._equirectMaterial );

}

/**
	 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
	 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
	 * one of them will cause any others to also become unusable.
	 */
	dispose() {

this._dispose();

if ( this._cubemapMaterial !== null ) this._cubemapMaterial.dispose();
		if ( this._equirectMaterial !== null ) this._equirectMaterial.dispose();

}

// private interface

_setSize( cubeSize ) {

this._lodMax = Math.floor( Math.log2( cubeSize ) );
		this._cubeSize = Math.pow( 2, this._lodMax );

}

_dispose() {

if ( this._blurMaterial !== null ) this._blurMaterial.dispose();

if ( this._pingPongRenderTarget !== null ) this._pingPongRenderTarget.dispose();

for ( let i = 0; i < this._lodPlanes.length; i ++ ) {

this._lodPlanes[ i ].dispose();

}

_cleanup( outputTarget ) {

this._renderer.setRenderTarget( _oldTarget );
		outputTarget.scissorTest = false;
		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );

}

_fromTexture( texture, renderTarget ) {

if ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping ) {

this._setSize( texture.image.length === 0 ? 16 : ( texture.image[ 0 ].width || texture.image[ 0 ].image.width ) );

} else { // Equirectangular

this._setSize( texture.image.width / 4 );

}

_oldTarget = this._renderer.getRenderTarget();

const cubeUVRenderTarget = renderTarget || this._allocateTargets();
		this._textureToCubeUV( texture, cubeUVRenderTarget );
		this._applyPMREM( cubeUVRenderTarget );
		this._cleanup( cubeUVRenderTarget );

return cubeUVRenderTarget;

}

_allocateTargets() {

const width = 3 * Math.max( this._cubeSize, 16 * 7 );
		const height = 4 * this._cubeSize;

const params = {
			magFilter: LinearFilter,
			minFilter: LinearFilter,
			generateMipmaps: false,
			type: HalfFloatType,
			format: RGBAFormat,
			encoding: LinearEncoding,
			depthBuffer: false
		};

const cubeUVRenderTarget = _createRenderTarget( width, height, params );

if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width || this._pingPongRenderTarget.height !== height ) {

if ( this._pingPongRenderTarget !== null ) {

this._dispose();

}

this._pingPongRenderTarget = _createRenderTarget( width, height, params );

const { _lodMax } = this;
			( { sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes( _lodMax ) );

this._blurMaterial = _getBlurShader( _lodMax, width, height );

}

return cubeUVRenderTarget;

}

_compileMaterial( material ) {

const tmpMesh = new Mesh( this._lodPlanes[ 0 ], material );
		this._renderer.compile( tmpMesh, _flatCamera );

}

_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {

const fov = 90;
		const aspect = 1;
		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
		const renderer = this._renderer;

const originalAutoClear = renderer.autoClear;
		const toneMapping = renderer.toneMapping;
		renderer.getClearColor( _clearColor );

renderer.toneMapping = NoToneMapping;
		renderer.autoClear = false;

const backgroundMaterial = new MeshBasicMaterial( {
			name: 'PMREM.Background',
			side: BackSide,
			depthWrite: false,
			depthTest: false,
		} );

const backgroundBox = new Mesh( new BoxGeometry(), backgroundMaterial );

let useSolidColor = false;
		const background = scene.background;

if ( background ) {

if ( background.isColor ) {

backgroundMaterial.color.copy( background );
				scene.background = null;
				useSolidColor = true;

}

} else {

backgroundMaterial.color.copy( _clearColor );
			useSolidColor = true;

}

for ( let i = 0; i < 6; i ++ ) {

const col = i % 3;

if ( col === 0 ) {

cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );

} else if ( col === 1 ) {

cubeCamera.up.set( 0, 0, upSign[ i ] );
				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );

} else {

cubeCamera.up.set( 0, upSign[ i ], 0 );
				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );

}

const size = this._cubeSize;

_setViewport( cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size );

renderer.setRenderTarget( cubeUVRenderTarget );

if ( useSolidColor ) {

renderer.render( backgroundBox, cubeCamera );

}

renderer.render( scene, cubeCamera );

}

backgroundBox.geometry.dispose();
		backgroundBox.material.dispose();

renderer.toneMapping = toneMapping;
		renderer.autoClear = originalAutoClear;
		scene.background = background;

}

_textureToCubeUV( texture, cubeUVRenderTarget ) {

const renderer = this._renderer;

const isCubeTexture = ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping );

if ( isCubeTexture ) {

if ( this._cubemapMaterial === null ) {

this._cubemapMaterial = _getCubemapMaterial();

}

this._cubemapMaterial.uniforms.flipEnvMap.value = ( texture.isRenderTargetTexture === false ) ? - 1 : 1;

} else {

if ( this._equirectMaterial === null ) {

this._equirectMaterial = _getEquirectMaterial();

}

const material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;
		const mesh = new Mesh( this._lodPlanes[ 0 ], material );

const uniforms = material.uniforms;

uniforms[ 'envMap' ].value = texture;

const size = this._cubeSize;

_setViewport( cubeUVRenderTarget, 0, 0, 3 * size, 2 * size );

renderer.setRenderTarget( cubeUVRenderTarget );
		renderer.render( mesh, _flatCamera );

}

_applyPMREM( cubeUVRenderTarget ) {

const renderer = this._renderer;
		const autoClear = renderer.autoClear;
		renderer.autoClear = false;

for ( let i = 1; i < this._lodPlanes.length; i ++ ) {

const sigma = Math.sqrt( this._sigmas[ i ] * this._sigmas[ i ] - this._sigmas[ i - 1 ] * this._sigmas[ i - 1 ] );

const poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];

this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );

}

renderer.autoClear = autoClear;

}

/**
	 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
	 * vertically and horizontally, but this breaks down on a cube. Here we apply
	 * the blur latitudinally (around the poles), and then longitudinally (towards
	 * the poles) to approximate the orthogonally-separable blur. It is least
	 * accurate at the poles, but still does a decent job.
	 */
	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {

const pingPongRenderTarget = this._pingPongRenderTarget;

this._halfBlur(
			cubeUVRenderTarget,
			pingPongRenderTarget,
			lodIn,
			lodOut,
			sigma,
			'latitudinal',
			poleAxis );

this._halfBlur(
			pingPongRenderTarget,
			cubeUVRenderTarget,
			lodOut,
			lodOut,
			sigma,
			'longitudinal',
			poleAxis );

}

_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {

const renderer = this._renderer;
		const blurMaterial = this._blurMaterial;

if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {

console.error(
				'blur direction must be either latitudinal or longitudinal!' );

}

// Number of standard deviations at which to cut off the discrete approximation.
		const STANDARD_DEVIATIONS = 3;

const blurMesh = new Mesh( this._lodPlanes[ lodOut ], blurMaterial );
		const blurUniforms = blurMaterial.uniforms;

const pixels = this._sizeLods[ lodIn ] - 1;
		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
		const sigmaPixels = sigmaRadians / radiansPerPixel;
		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;

if ( samples > MAX_SAMPLES ) {

console.warn( `sigmaRadians, ${
				sigmaRadians}, is too large and will clip, as it requested ${
				samples} samples when the maximum is set to ${MAX_SAMPLES}` );

}

const weights = [];
		let sum = 0;

for ( let i = 0; i < MAX_SAMPLES; ++ i ) {

const x = i / sigmaPixels;
			const weight = Math.exp( - x * x / 2 );
			weights.push( weight );

if ( i === 0 ) {

sum += weight;

} else if ( i < samples ) {

sum += 2 * weight;

}

for ( let i = 0; i < weights.length; i ++ ) {

weights[ i ] = weights[ i ] / sum;

}

blurUniforms[ 'envMap' ].value = targetIn.texture;
		blurUniforms[ 'samples' ].value = samples;
		blurUniforms[ 'weights' ].value = weights;
		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';

if ( poleAxis ) {

blurUniforms[ 'poleAxis' ].value = poleAxis;

}

const { _lodMax } = this;
		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
		blurUniforms[ 'mipInt' ].value = _lodMax - lodIn;

const outputSize = this._sizeLods[ lodOut ];
		const x = 3 * outputSize * ( lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0 );
		const y = 4 * ( this._cubeSize - outputSize );

_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
		renderer.setRenderTarget( targetOut );
		renderer.render( blurMesh, _flatCamera );

}

function _createPlanes( lodMax ) {

const lodPlanes = [];
	const sizeLods = [];
	const sigmas = [];

let lod = lodMax;

const totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;

for ( let i = 0; i < totalLods; i ++ ) {

const sizeLod = Math.pow( 2, lod );
		sizeLods.push( sizeLod );
		let sigma = 1.0 / sizeLod;

if ( i > lodMax - LOD_MIN ) {

sigma = EXTRA_LOD_SIGMA[ i - lodMax + LOD_MIN - 1 ];

} else if ( i === 0 ) {

sigma = 0;

}

sigmas.push( sigma );

const texelSize = 1.0 / ( sizeLod - 2 );
		const min = - texelSize;
		const max = 1 + texelSize;
		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];

const cubeFaces = 6;
		const vertices = 6;
		const positionSize = 3;
		const uvSize = 2;
		const faceIndexSize = 1;

const position = new Float32Array( positionSize * vertices * cubeFaces );
		const uv = new Float32Array( uvSize * vertices * cubeFaces );
		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );

for ( let face = 0; face < cubeFaces; face ++ ) {

const x = ( face % 3 ) * 2 / 3 - 1;
			const y = face > 2 ? 0 : - 1;
			const coordinates = [
				x, y, 0,
				x + 2 / 3, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y, 0,
				x + 2 / 3, y + 1, 0,
				x, y + 1, 0
			];
			position.set( coordinates, positionSize * vertices * face );
			uv.set( uv1, uvSize * vertices * face );
			const fill = [ face, face, face, face, face, face ];
			faceIndex.set( fill, faceIndexSize * vertices * face );

}

const planes = new BufferGeometry();
		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
		lodPlanes.push( planes );

if ( lod > LOD_MIN ) {

lod --;

}

return { lodPlanes, sizeLods, sigmas };

}

function _createRenderTarget( width, height, params ) {

const cubeUVRenderTarget = new WebGLRenderTarget( width, height, params );
	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
	cubeUVRenderTarget.scissorTest = true;
	return cubeUVRenderTarget;

}

function _setViewport( target, x, y, width, height ) {

target.viewport.set( x, y, width, height );
	target.scissor.set( x, y, width, height );

}

function _getBlurShader( lodMax, width, height ) {

const weights = new Float32Array( MAX_SAMPLES );
	const poleAxis = new Vector3( 0, 1, 0 );
	const shaderMaterial = new ShaderMaterial( {

defines: {
			'n': MAX_SAMPLES,
			'CUBEUV_TEXEL_WIDTH': 1.0 / width,
			'CUBEUV_TEXEL_HEIGHT': 1.0 / height,
			'CUBEUV_MAX_MIP': `${lodMax}.0`,
		},

uniforms: {
			'envMap': { value: null },
			'samples': { value: 1 },
			'weights': { value: weights },
			'latitudinal': { value: false },
			'dTheta': { value: 0 },
			'mipInt': { value: 0 },
			'poleAxis': { value: poleAxis }
		},

vertexShader: _getCommonVertexShader(),

fragmentShader: /* glsl */`

precision mediump float;
			precision mediump int;

varying vec3 vOutputDirection;

uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

vec3 getSample( float theta, vec3 axis ) {

float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

return bilinearCubeUV( envMap, sampleDirection, mipInt );

}

void main() {

vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

}

axis = normalize( axis );

gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

for ( int i = 1; i < n; i++ ) {

if ( i >= samples ) {

break;

}

float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

}

}
		`,

blending: NoBlending,
		depthTest: false,
		depthWrite: false

} );

return shaderMaterial;

}

function _getEquirectMaterial() {

return new ShaderMaterial( {

uniforms: {
			'envMap': { value: null }
		},

vertexShader: _getCommonVertexShader(),

fragmentShader: /* glsl */`

precision mediump float;
			precision mediump int;

varying vec3 vOutputDirection;

uniform sampler2D envMap;

#include <common>

void main() {

vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );

}
		`,

blending: NoBlending,
		depthTest: false,
		depthWrite: false

} );

}

function _getCubemapMaterial() {

return new ShaderMaterial( {

uniforms: {
			'envMap': { value: null },
			'flipEnvMap': { value: - 1 }
		},

vertexShader: _getCommonVertexShader(),

fragmentShader: /* glsl */`

precision mediump float;
			precision mediump int;

uniform float flipEnvMap;

varying vec3 vOutputDirection;

uniform samplerCube envMap;

void main() {

gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );

}
		`,

blending: NoBlending,
		depthTest: false,
		depthWrite: false

} );

}

function _getCommonVertexShader() {

return /* glsl */`

precision mediump float;
		precision mediump int;

attribute float faceIndex;

varying vec3 vOutputDirection;

// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

uv = 2.0 * uv - 1.0;

vec3 direction = vec3( uv, 1.0 );

if ( face == 0.0 ) {

direction = direction.zyx; // ( 1, v, u ) pos x

} else if ( face == 1.0 ) {

direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

} else if ( face == 2.0 ) {

direction.x *= -1.0; // ( -u, v, 1 ) pos z

} else if ( face == 3.0 ) {

direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

} else if ( face == 4.0 ) {

direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

} else if ( face == 5.0 ) {

direction.z *= -1.0; // ( u, v, -1 ) neg z

}

return direction;

}

void main() {

vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

}
	`;

}

function WebGLCubeUVMaps( renderer ) {

let cubeUVmaps = new WeakMap();

let pmremGenerator = null;

function get( texture ) {

if ( texture && texture.isTexture ) {

const mapping = texture.mapping;

const isEquirectMap = ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping );
			const isCubeMap = ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );

// equirect/cube map to cubeUV conversion

if ( isEquirectMap || isCubeMap ) {

if ( texture.isRenderTargetTexture && texture.needsPMREMUpdate === true ) {

texture.needsPMREMUpdate = false;

let renderTarget = cubeUVmaps.get( texture );

if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture, renderTarget ) : pmremGenerator.fromCubemap( texture, renderTarget );
					cubeUVmaps.set( texture, renderTarget );

return renderTarget.texture;

} else {

if ( cubeUVmaps.has( texture ) ) {

return cubeUVmaps.get( texture ).texture;

} else {

const image = texture.image;

if ( ( isEquirectMap && image && image.height > 0 ) || ( isCubeMap && image && isCubeTextureComplete( image ) ) ) {

if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );

const renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture ) : pmremGenerator.fromCubemap( texture );
							cubeUVmaps.set( texture, renderTarget );

texture.addEventListener( 'dispose', onTextureDispose );

return renderTarget.texture;

} else {

// image not yet ready. try the conversion next frame

return null;

}

return texture;

}

function isCubeTextureComplete( image ) {

let count = 0;
		const length = 6;

for ( let i = 0; i < length; i ++ ) {

if ( image[ i ] !== undefined ) count ++;

}

return count === length;

}

function onTextureDispose( event ) {

const texture = event.target;

texture.removeEventListener( 'dispose', onTextureDispose );

const cubemapUV = cubeUVmaps.get( texture );

if ( cubemapUV !== undefined ) {

cubeUVmaps.delete( texture );
			cubemapUV.dispose();

}

function dispose() {

cubeUVmaps = new WeakMap();

if ( pmremGenerator !== null ) {

pmremGenerator.dispose();
			pmremGenerator = null;

}

return {
		get: get,
		dispose: dispose
	};

}

function WebGLExtensions( gl ) {

const extensions = {};

function getExtension( name ) {

if ( extensions[ name ] !== undefined ) {

return extensions[ name ];

}

let extension;

switch ( name ) {

case 'WEBGL_depth_texture':
				extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
				break;

case 'EXT_texture_filter_anisotropic':
				extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
				break;

case 'WEBGL_compressed_texture_s3tc':
				extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
				break;

case 'WEBGL_compressed_texture_pvrtc':
				extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
				break;

default:
				extension = gl.getExtension( name );

}

extensions[ name ] = extension;

return extension;

}

return {

has: function ( name ) {

return getExtension( name ) !== null;

init: function ( capabilities ) {

if ( capabilities.isWebGL2 ) {

getExtension( 'EXT_color_buffer_float' );

} else {

getExtension( 'WEBGL_depth_texture' );
				getExtension( 'OES_texture_float' );
				getExtension( 'OES_texture_half_float' );
				getExtension( 'OES_texture_half_float_linear' );
				getExtension( 'OES_standard_derivatives' );
				getExtension( 'OES_element_index_uint' );
				getExtension( 'OES_vertex_array_object' );
				getExtension( 'ANGLE_instanced_arrays' );

}

getExtension( 'OES_texture_float_linear' );
			getExtension( 'EXT_color_buffer_half_float' );
			getExtension( 'WEBGL_multisampled_render_to_texture' );

get: function ( name ) {

const extension = getExtension( name );

if ( extension === null ) {

console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );

}

return extension;

}

};

}

function WebGLGeometries( gl, attributes, info, bindingStates ) {

const geometries = {};
	const wireframeAttributes = new WeakMap();

function onGeometryDispose( event ) {

const geometry = event.target;

if ( geometry.index !== null ) {

attributes.remove( geometry.index );

}

for ( const name in geometry.attributes ) {

attributes.remove( geometry.attributes[ name ] );

}

geometry.removeEventListener( 'dispose', onGeometryDispose );

delete geometries[ geometry.id ];

const attribute = wireframeAttributes.get( geometry );

if ( attribute ) {

attributes.remove( attribute );
			wireframeAttributes.delete( geometry );

}

bindingStates.releaseStatesOfGeometry( geometry );

if ( geometry.isInstancedBufferGeometry === true ) {

delete geometry._maxInstanceCount;

}

info.memory.geometries --;

}

function get( object, geometry ) {

if ( geometries[ geometry.id ] === true ) return geometry;

geometry.addEventListener( 'dispose', onGeometryDispose );

geometries[ geometry.id ] = true;

info.memory.geometries ++;

return geometry;

}

function update( geometry ) {

const geometryAttributes = geometry.attributes;

// Updating index buffer in VAO now. See WebGLBindingStates.

for ( const name in geometryAttributes ) {

attributes.update( geometryAttributes[ name ], 34962 );

}

// morph targets

const morphAttributes = geometry.morphAttributes;

for ( const name in morphAttributes ) {

const array = morphAttributes[ name ];

for ( let i = 0, l = array.length; i < l; i ++ ) {

attributes.update( array[ i ], 34962 );

}

function updateWireframeAttribute( geometry ) {

const indices = [];

const geometryIndex = geometry.index;
		const geometryPosition = geometry.attributes.position;
		let version = 0;

if ( geometryIndex !== null ) {

const array = geometryIndex.array;
			version = geometryIndex.version;

for ( let i = 0, l = array.length; i < l; i += 3 ) {

const a = array[ i + 0 ];
				const b = array[ i + 1 ];
				const c = array[ i + 2 ];

indices.push( a, b, b, c, c, a );

}

} else {

const array = geometryPosition.array;
			version = geometryPosition.version;

for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {

const a = i + 0;
				const b = i + 1;
				const c = i + 2;

indices.push( a, b, b, c, c, a );

}

const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
		attribute.version = version;

// Updating index buffer in VAO now. See WebGLBindingStates

const previousAttribute = wireframeAttributes.get( geometry );

if ( previousAttribute ) attributes.remove( previousAttribute );

wireframeAttributes.set( geometry, attribute );

}

function getWireframeAttribute( geometry ) {

const currentAttribute = wireframeAttributes.get( geometry );

if ( currentAttribute ) {

const geometryIndex = geometry.index;

if ( geometryIndex !== null ) {

// if the attribute is obsolete, create a new one

if ( currentAttribute.version < geometryIndex.version ) {

updateWireframeAttribute( geometry );

}

} else {

updateWireframeAttribute( geometry );

}

return wireframeAttributes.get( geometry );

}

return {

get: get,
		update: update,

getWireframeAttribute: getWireframeAttribute

};

}

function WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {

const isWebGL2 = capabilities.isWebGL2;

let mode;

function setMode( value ) {

mode = value;

}

let type, bytesPerElement;

function setIndex( value ) {

type = value.type;
		bytesPerElement = value.bytesPerElement;

}

function render( start, count ) {

gl.drawElements( mode, count, type, start * bytesPerElement );

info.update( count, mode, 1 );

}

function renderInstances( start, count, primcount ) {

if ( primcount === 0 ) return;

let extension, methodName;

if ( isWebGL2 ) {

extension = gl;
			methodName = 'drawElementsInstanced';

} else {

extension = extensions.get( 'ANGLE_instanced_arrays' );
			methodName = 'drawElementsInstancedANGLE';

if ( extension === null ) {

console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
				return;

}

extension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );

info.update( count, mode, primcount );

}

this.setMode = setMode;
	this.setIndex = setIndex;
	this.render = render;
	this.renderInstances = renderInstances;

}

function WebGLInfo( gl ) {

const memory = {
		geometries: 0,
		textures: 0
	};

const render = {
		frame: 0,
		calls: 0,
		triangles: 0,
		points: 0,
		lines: 0
	};

function update( count, mode, instanceCount ) {

render.calls ++;

switch ( mode ) {

case 4:
				render.triangles += instanceCount * ( count / 3 );
				break;

case 1:
				render.lines += instanceCount * ( count / 2 );
				break;

case 3:
				render.lines += instanceCount * ( count - 1 );
				break;

case 2:
				render.lines += instanceCount * count;
				break;

case 0:
				render.points += instanceCount * count;
				break;

default:
				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
				break;

}

function reset() {

render.frame ++;
		render.calls = 0;
		render.triangles = 0;
		render.points = 0;
		render.lines = 0;

}

return {
		memory: memory,
		render: render,
		programs: null,
		autoReset: true,
		reset: reset,
		update: update
	};

}

function numericalSort( a, b ) {

return a[ 0 ] - b[ 0 ];

}

function absNumericalSort( a, b ) {

return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );

}

function WebGLMorphtargets( gl, capabilities, textures ) {

const influencesList = {};
	const morphInfluences = new Float32Array( 8 );
	const morphTextures = new WeakMap();
	const morph = new Vector4();

const workInfluences = [];

for ( let i = 0; i < 8; i ++ ) {

workInfluences[ i ] = [ i, 0 ];

}

function update( object, geometry, program ) {

const objectInfluences = object.morphTargetInfluences;

if ( capabilities.isWebGL2 === true ) {

// instead of using attributes, the WebGL 2 code path encodes morph targets
			// into an array of data textures. Each layer represents a single morph target.

const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
			const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

let entry = morphTextures.get( geometry );

if ( entry === undefined || entry.count !== morphTargetsCount ) {

if ( entry !== undefined ) entry.texture.dispose();

const hasMorphPosition = geometry.morphAttributes.position !== undefined;
				const hasMorphNormals = geometry.morphAttributes.normal !== undefined;
				const hasMorphColors = geometry.morphAttributes.color !== undefined;

const morphTargets = geometry.morphAttributes.position || [];
				const morphNormals = geometry.morphAttributes.normal || [];
				const morphColors = geometry.morphAttributes.color || [];

let vertexDataCount = 0;

if ( hasMorphPosition === true ) vertexDataCount = 1;
				if ( hasMorphNormals === true ) vertexDataCount = 2;
				if ( hasMorphColors === true ) vertexDataCount = 3;

let width = geometry.attributes.position.count * vertexDataCount;
				let height = 1;

if ( width > capabilities.maxTextureSize ) {

height = Math.ceil( width / capabilities.maxTextureSize );
					width = capabilities.maxTextureSize;

}

const buffer = new Float32Array( width * height * 4 * morphTargetsCount );

const texture = new DataArrayTexture( buffer, width, height, morphTargetsCount );
				texture.type = FloatType;
				texture.needsUpdate = true;

// fill buffer

const vertexDataStride = vertexDataCount * 4;

for ( let i = 0; i < morphTargetsCount; i ++ ) {

const morphTarget = morphTargets[ i ];
					const morphNormal = morphNormals[ i ];
					const morphColor = morphColors[ i ];

const offset = width * height * 4 * i;

for ( let j = 0; j < morphTarget.count; j ++ ) {

const stride = j * vertexDataStride;

if ( hasMorphPosition === true ) {

morph.fromBufferAttribute( morphTarget, j );

buffer[ offset + stride + 0 ] = morph.x;
							buffer[ offset + stride + 1 ] = morph.y;
							buffer[ offset + stride + 2 ] = morph.z;
							buffer[ offset + stride + 3 ] = 0;

}

if ( hasMorphNormals === true ) {

morph.fromBufferAttribute( morphNormal, j );

buffer[ offset + stride + 4 ] = morph.x;
							buffer[ offset + stride + 5 ] = morph.y;
							buffer[ offset + stride + 6 ] = morph.z;
							buffer[ offset + stride + 7 ] = 0;

}

if ( hasMorphColors === true ) {

morph.fromBufferAttribute( morphColor, j );

buffer[ offset + stride + 8 ] = morph.x;
							buffer[ offset + stride + 9 ] = morph.y;
							buffer[ offset + stride + 10 ] = morph.z;
							buffer[ offset + stride + 11 ] = ( morphColor.itemSize === 4 ) ? morph.w : 1;

}

entry = {
					count: morphTargetsCount,
					texture: texture,
					size: new Vector2( width, height )
				};

morphTextures.set( geometry, entry );

function disposeTexture() {

texture.dispose();

morphTextures.delete( geometry );

geometry.removeEventListener( 'dispose', disposeTexture );

}

geometry.addEventListener( 'dispose', disposeTexture );

}

let morphInfluencesSum = 0;

for ( let i = 0; i < objectInfluences.length; i ++ ) {

morphInfluencesSum += objectInfluences[ i ];

}

const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
			program.getUniforms().setValue( gl, 'morphTargetInfluences', objectInfluences );

program.getUniforms().setValue( gl, 'morphTargetsTexture', entry.texture, textures );
			program.getUniforms().setValue( gl, 'morphTargetsTextureSize', entry.size );

} else {

// When object doesn't have morph target influences defined, we treat it as a 0-length array
			// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences

const length = objectInfluences === undefined ? 0 : objectInfluences.length;

let influences = influencesList[ geometry.id ];

if ( influences === undefined || influences.length !== length ) {

// initialise list

influences = [];

for ( let i = 0; i < length; i ++ ) {

influences[ i ] = [ i, 0 ];

}

influencesList[ geometry.id ] = influences;

}

// Collect influences

for ( let i = 0; i < length; i ++ ) {

const influence = influences[ i ];

influence[ 0 ] = i;
				influence[ 1 ] = objectInfluences[ i ];

}

influences.sort( absNumericalSort );

for ( let i = 0; i < 8; i ++ ) {

if ( i < length && influences[ i ][ 1 ] ) {

workInfluences[ i ][ 0 ] = influences[ i ][ 0 ];
					workInfluences[ i ][ 1 ] = influences[ i ][ 1 ];

} else {

workInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;
					workInfluences[ i ][ 1 ] = 0;

}

workInfluences.sort( numericalSort );

const morphTargets = geometry.morphAttributes.position;
			const morphNormals = geometry.morphAttributes.normal;

let morphInfluencesSum = 0;

for ( let i = 0; i < 8; i ++ ) {

const influence = workInfluences[ i ];
				const index = influence[ 0 ];
				const value = influence[ 1 ];

if ( index !== Number.MAX_SAFE_INTEGER && value ) {

if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {

geometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );

}

if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {

geometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );

}

morphInfluences[ i ] = value;
					morphInfluencesSum += value;

} else {

if ( morphTargets && geometry.hasAttribute( 'morphTarget' + i ) === true ) {

geometry.deleteAttribute( 'morphTarget' + i );

}

if ( morphNormals && geometry.hasAttribute( 'morphNormal' + i ) === true ) {

geometry.deleteAttribute( 'morphNormal' + i );

}

morphInfluences[ i ] = 0;

}

// GLSL shader uses formula baseinfluence * base + sum(target * influence)
			// This allows us to switch between absolute morphs and relative morphs without changing shader code
			// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)
			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;

program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
			program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );

}

return {

update: update

};

}

function WebGLObjects( gl, geometries, attributes, info ) {

let updateMap = new WeakMap();

function update( object ) {

const frame = info.render.frame;

const geometry = object.geometry;
		const buffergeometry = geometries.get( object, geometry );

// Update once per frame

if ( updateMap.get( buffergeometry ) !== frame ) {

geometries.update( buffergeometry );

updateMap.set( buffergeometry, frame );

}

if ( object.isInstancedMesh ) {

if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {

object.addEventListener( 'dispose', onInstancedMeshDispose );

}

attributes.update( object.instanceMatrix, 34962 );

if ( object.instanceColor !== null ) {

attributes.update( object.instanceColor, 34962 );

}

return buffergeometry;

}

function dispose() {

updateMap = new WeakMap();

}

function onInstancedMeshDispose( event ) {

const instancedMesh = event.target;

instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );

attributes.remove( instancedMesh.instanceMatrix );

if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );

}

return {

update: update,
		dispose: dispose

};

}

/**
 * Uniforms of a program.
 * Those form a tree structure with a special top-level container for the root,
 * which you get by calling 'new WebGLUniforms( gl, program )'.
 *
 *
 * Properties of inner nodes including the top-level container:
 *
 * .seq - array of nested uniforms
 * .map - nested uniforms by name
 *
 *
 * Methods of all nodes except the top-level container:
 *
 * .setValue( gl, value, [textures] )
 *
 * 		uploads a uniform value(s)
 *  	the 'textures' parameter is needed for sampler uniforms
 *
 *
 * Static methods of the top-level container (textures factorizations):
 *
 * .upload( gl, seq, values, textures )
 *
 * 		sets uniforms in 'seq' to 'values[id].value'
 *
 * .seqWithValue( seq, values ) : filteredSeq
 *
 * 		filters 'seq' entries with corresponding entry in values
 *
 *
 * Methods of the top-level container (textures factorizations):
 *
 * .setValue( gl, name, value, textures )
 *
 * 		sets uniform with  name 'name' to 'value'
 *
 * .setOptional( gl, obj, prop )
 *
 * 		like .set for an optional property of the object
 *
 */

const emptyTexture = /*@__PURE__*/ new Texture();
const emptyArrayTexture = /*@__PURE__*/ new DataArrayTexture();
const empty3dTexture = /*@__PURE__*/ new Data3DTexture();
const emptyCubeTexture = /*@__PURE__*/ new CubeTexture();

// --- Utilities ---

// Array Caches (provide typed arrays for temporary by size)

const arrayCacheF32 = [];
const arrayCacheI32 = [];

// Float32Array caches used for uploading Matrix uniforms

const mat4array = new Float32Array( 16 );
const mat3array = new Float32Array( 9 );
const mat2array = new Float32Array( 4 );

// Flattening for arrays of vectors and matrices

function flatten( array, nBlocks, blockSize ) {

const firstElem = array[ 0 ];

if ( firstElem <= 0 || firstElem > 0 ) return array;
	// unoptimized: ! isNaN( firstElem )
	// see http://jacksondunstan.com/articles/983

const n = nBlocks * blockSize;
	let r = arrayCacheF32[ n ];

if ( r === undefined ) {

r = new Float32Array( n );
		arrayCacheF32[ n ] = r;

}

if ( nBlocks !== 0 ) {

firstElem.toArray( r, 0 );

for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {

offset += blockSize;
			array[ i ].toArray( r, offset );

}

return r;

}

function arraysEqual( a, b ) {

if ( a.length !== b.length ) return false;

for ( let i = 0, l = a.length; i < l; i ++ ) {

if ( a[ i ] !== b[ i ] ) return false;

}

return true;

}

function copyArray( a, b ) {

for ( let i = 0, l = b.length; i < l; i ++ ) {

a[ i ] = b[ i ];

}

// Texture unit allocation

function allocTexUnits( textures, n ) {

let r = arrayCacheI32[ n ];

if ( r === undefined ) {

r = new Int32Array( n );
		arrayCacheI32[ n ] = r;

}

for ( let i = 0; i !== n; ++ i ) {

r[ i ] = textures.allocateTextureUnit();

}

return r;

}

// --- Setters ---

// Note: Defining these methods externally, because they come in a bunch
// and this way their names minify.

// Single scalar

function setValueV1f( gl, v ) {

const cache = this.cache;

if ( cache[ 0 ] === v ) return;

gl.uniform1f( this.addr, v );

cache[ 0 ] = v;

}

// Single float vector (from flat array or THREE.VectorN)

function setValueV2f( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {

gl.uniform2f( this.addr, v.x, v.y );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform2fv( this.addr, v );

copyArray( cache, v );

}

function setValueV3f( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {

gl.uniform3f( this.addr, v.x, v.y, v.z );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;

}

} else if ( v.r !== undefined ) {

if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {

gl.uniform3f( this.addr, v.r, v.g, v.b );

cache[ 0 ] = v.r;
			cache[ 1 ] = v.g;
			cache[ 2 ] = v.b;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform3fv( this.addr, v );

copyArray( cache, v );

}

function setValueV4f( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {

gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
			cache[ 3 ] = v.w;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform4fv( this.addr, v );

copyArray( cache, v );

}

// Single matrix (from flat array or THREE.MatrixN)

function setValueM2( gl, v ) {

const cache = this.cache;
	const elements = v.elements;

if ( elements === undefined ) {

if ( arraysEqual( cache, v ) ) return;

gl.uniformMatrix2fv( this.addr, false, v );

copyArray( cache, v );

} else {

if ( arraysEqual( cache, elements ) ) return;

mat2array.set( elements );

gl.uniformMatrix2fv( this.addr, false, mat2array );

copyArray( cache, elements );

}

function setValueM3( gl, v ) {

const cache = this.cache;
	const elements = v.elements;

if ( elements === undefined ) {

if ( arraysEqual( cache, v ) ) return;

gl.uniformMatrix3fv( this.addr, false, v );

copyArray( cache, v );

} else {

if ( arraysEqual( cache, elements ) ) return;

mat3array.set( elements );

gl.uniformMatrix3fv( this.addr, false, mat3array );

copyArray( cache, elements );

}

function setValueM4( gl, v ) {

const cache = this.cache;
	const elements = v.elements;

if ( elements === undefined ) {

if ( arraysEqual( cache, v ) ) return;

gl.uniformMatrix4fv( this.addr, false, v );

copyArray( cache, v );

} else {

if ( arraysEqual( cache, elements ) ) return;

mat4array.set( elements );

gl.uniformMatrix4fv( this.addr, false, mat4array );

copyArray( cache, elements );

}

// Single integer / boolean

function setValueV1i( gl, v ) {

const cache = this.cache;

if ( cache[ 0 ] === v ) return;

gl.uniform1i( this.addr, v );

cache[ 0 ] = v;

}

// Single integer / boolean vector (from flat array or THREE.VectorN)

function setValueV2i( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {

gl.uniform2i( this.addr, v.x, v.y );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform2iv( this.addr, v );

copyArray( cache, v );

}

function setValueV3i( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {

gl.uniform3i( this.addr, v.x, v.y, v.z );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform3iv( this.addr, v );

copyArray( cache, v );

}

function setValueV4i( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {

gl.uniform4i( this.addr, v.x, v.y, v.z, v.w );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
			cache[ 3 ] = v.w;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform4iv( this.addr, v );

copyArray( cache, v );

}

// Single unsigned integer

function setValueV1ui( gl, v ) {

const cache = this.cache;

if ( cache[ 0 ] === v ) return;

gl.uniform1ui( this.addr, v );

cache[ 0 ] = v;

}

// Single unsigned integer vector (from flat array or THREE.VectorN)

function setValueV2ui( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {

gl.uniform2ui( this.addr, v.x, v.y );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform2uiv( this.addr, v );

copyArray( cache, v );

}

function setValueV3ui( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {

gl.uniform3ui( this.addr, v.x, v.y, v.z );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform3uiv( this.addr, v );

copyArray( cache, v );

}

function setValueV4ui( gl, v ) {

const cache = this.cache;

if ( v.x !== undefined ) {

if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {

gl.uniform4ui( this.addr, v.x, v.y, v.z, v.w );

cache[ 0 ] = v.x;
			cache[ 1 ] = v.y;
			cache[ 2 ] = v.z;
			cache[ 3 ] = v.w;

}

} else {

if ( arraysEqual( cache, v ) ) return;

gl.uniform4uiv( this.addr, v );

copyArray( cache, v );

}

// Single texture (2D / Cube)

function setValueT1( gl, v, textures ) {

const cache = this.cache;
	const unit = textures.allocateTextureUnit();

if ( cache[ 0 ] !== unit ) {

gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

}

textures.setTexture2D( v || emptyTexture, unit );

}

function setValueT3D1( gl, v, textures ) {

const cache = this.cache;
	const unit = textures.allocateTextureUnit();

if ( cache[ 0 ] !== unit ) {

gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

}

textures.setTexture3D( v || empty3dTexture, unit );

}

function setValueT6( gl, v, textures ) {

const cache = this.cache;
	const unit = textures.allocateTextureUnit();

if ( cache[ 0 ] !== unit ) {

gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

}

textures.setTextureCube( v || emptyCubeTexture, unit );

}

function setValueT2DArray1( gl, v, textures ) {

const cache = this.cache;
	const unit = textures.allocateTextureUnit();

if ( cache[ 0 ] !== unit ) {

gl.uniform1i( this.addr, unit );
		cache[ 0 ] = unit;

}

textures.setTexture2DArray( v || emptyArrayTexture, unit );

}

// Helper to pick the right setter for the singular case

function getSingularSetter( type ) {

switch ( type ) {

case 0x1406: return setValueV1f; // FLOAT
		case 0x8b50: return setValueV2f; // _VEC2
		case 0x8b51: return setValueV3f; // _VEC3
		case 0x8b52: return setValueV4f; // _VEC4

case 0x8b5a: return setValueM2; // _MAT2
		case 0x8b5b: return setValueM3; // _MAT3
		case 0x8b5c: return setValueM4; // _MAT4

case 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL
		case 0x8b53: case 0x8b57: return setValueV2i; // _VEC2
		case 0x8b54: case 0x8b58: return setValueV3i; // _VEC3
		case 0x8b55: case 0x8b59: return setValueV4i; // _VEC4

case 0x1405: return setValueV1ui; // UINT
		case 0x8dc6: return setValueV2ui; // _VEC2
		case 0x8dc7: return setValueV3ui; // _VEC3
		case 0x8dc8: return setValueV4ui; // _VEC4

case 0x8b5e: // SAMPLER_2D
		case 0x8d66: // SAMPLER_EXTERNAL_OES
		case 0x8dca: // INT_SAMPLER_2D
		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
		case 0x8b62: // SAMPLER_2D_SHADOW
			return setValueT1;

case 0x8b5f: // SAMPLER_3D
		case 0x8dcb: // INT_SAMPLER_3D
		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
			return setValueT3D1;

case 0x8b60: // SAMPLER_CUBE
		case 0x8dcc: // INT_SAMPLER_CUBE
		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
		case 0x8dc5: // SAMPLER_CUBE_SHADOW
			return setValueT6;

case 0x8dc1: // SAMPLER_2D_ARRAY
		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
			return setValueT2DArray1;

}

// Array of scalars

function setValueV1fArray( gl, v ) {

gl.uniform1fv( this.addr, v );

}

// Array of vectors (from flat array or array of THREE.VectorN)

function setValueV2fArray( gl, v ) {

const data = flatten( v, this.size, 2 );

gl.uniform2fv( this.addr, data );

}

function setValueV3fArray( gl, v ) {

const data = flatten( v, this.size, 3 );

gl.uniform3fv( this.addr, data );

}

function setValueV4fArray( gl, v ) {

const data = flatten( v, this.size, 4 );

gl.uniform4fv( this.addr, data );

}

// Array of matrices (from flat array or array of THREE.MatrixN)

function setValueM2Array( gl, v ) {

const data = flatten( v, this.size, 4 );

gl.uniformMatrix2fv( this.addr, false, data );

}

function setValueM3Array( gl, v ) {

const data = flatten( v, this.size, 9 );

gl.uniformMatrix3fv( this.addr, false, data );

}

function setValueM4Array( gl, v ) {

const data = flatten( v, this.size, 16 );

gl.uniformMatrix4fv( this.addr, false, data );

}

// Array of integer / boolean

function setValueV1iArray( gl, v ) {

gl.uniform1iv( this.addr, v );

}

// Array of integer / boolean vectors (from flat array)

function setValueV2iArray( gl, v ) {

gl.uniform2iv( this.addr, v );

}

function setValueV3iArray( gl, v ) {

gl.uniform3iv( this.addr, v );

}

function setValueV4iArray( gl, v ) {

gl.uniform4iv( this.addr, v );

}

// Array of unsigned integer

function setValueV1uiArray( gl, v ) {

gl.uniform1uiv( this.addr, v );

}

// Array of unsigned integer vectors (from flat array)

function setValueV2uiArray( gl, v ) {

gl.uniform2uiv( this.addr, v );

}

function setValueV3uiArray( gl, v ) {

gl.uniform3uiv( this.addr, v );

}

function setValueV4uiArray( gl, v ) {

gl.uniform4uiv( this.addr, v );

}

// Array of textures (2D / 3D / Cube / 2DArray)

function setValueT1Array( gl, v, textures ) {

const cache = this.cache;

const n = v.length;

const units = allocTexUnits( textures, n );

if ( ! arraysEqual( cache, units ) ) {

gl.uniform1iv( this.addr, units );

copyArray( cache, units );

}

for ( let i = 0; i !== n; ++ i ) {

textures.setTexture2D( v[ i ] || emptyTexture, units[ i ] );

}

function setValueT3DArray( gl, v, textures ) {

const cache = this.cache;

const n = v.length;

const units = allocTexUnits( textures, n );

if ( ! arraysEqual( cache, units ) ) {

gl.uniform1iv( this.addr, units );

copyArray( cache, units );

}

for ( let i = 0; i !== n; ++ i ) {

textures.setTexture3D( v[ i ] || empty3dTexture, units[ i ] );

}

function setValueT6Array( gl, v, textures ) {

const cache = this.cache;

const n = v.length;

const units = allocTexUnits( textures, n );

if ( ! arraysEqual( cache, units ) ) {

gl.uniform1iv( this.addr, units );

copyArray( cache, units );

}

for ( let i = 0; i !== n; ++ i ) {

textures.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );

}

function setValueT2DArrayArray( gl, v, textures ) {

const cache = this.cache;

const n = v.length;

const units = allocTexUnits( textures, n );

if ( ! arraysEqual( cache, units ) ) {

gl.uniform1iv( this.addr, units );

copyArray( cache, units );

}

for ( let i = 0; i !== n; ++ i ) {

textures.setTexture2DArray( v[ i ] || emptyArrayTexture, units[ i ] );

}

// Helper to pick the right setter for a pure (bottom-level) array

function getPureArraySetter( type ) {

switch ( type ) {

case 0x1406: return setValueV1fArray; // FLOAT
		case 0x8b50: return setValueV2fArray; // _VEC2
		case 0x8b51: return setValueV3fArray; // _VEC3
		case 0x8b52: return setValueV4fArray; // _VEC4

case 0x8b5a: return setValueM2Array; // _MAT2
		case 0x8b5b: return setValueM3Array; // _MAT3
		case 0x8b5c: return setValueM4Array; // _MAT4

case 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL
		case 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2
		case 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3
		case 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4

case 0x1405: return setValueV1uiArray; // UINT
		case 0x8dc6: return setValueV2uiArray; // _VEC2
		case 0x8dc7: return setValueV3uiArray; // _VEC3
		case 0x8dc8: return setValueV4uiArray; // _VEC4

case 0x8b5e: // SAMPLER_2D
		case 0x8d66: // SAMPLER_EXTERNAL_OES
		case 0x8dca: // INT_SAMPLER_2D
		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
		case 0x8b62: // SAMPLER_2D_SHADOW
			return setValueT1Array;

case 0x8b5f: // SAMPLER_3D
		case 0x8dcb: // INT_SAMPLER_3D
		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
			return setValueT3DArray;

case 0x8b60: // SAMPLER_CUBE
		case 0x8dcc: // INT_SAMPLER_CUBE
		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
		case 0x8dc5: // SAMPLER_CUBE_SHADOW
			return setValueT6Array;

case 0x8dc1: // SAMPLER_2D_ARRAY
		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
			return setValueT2DArrayArray;

}

// --- Uniform Classes ---

class SingleUniform {

constructor( id, activeInfo, addr ) {

this.id = id;
		this.addr = addr;
		this.cache = [];
		this.setValue = getSingularSetter( activeInfo.type );

// this.path = activeInfo.name; // DEBUG

}

class PureArrayUniform {

constructor( id, activeInfo, addr ) {

this.id = id;
		this.addr = addr;
		this.cache = [];
		this.size = activeInfo.size;
		this.setValue = getPureArraySetter( activeInfo.type );

// this.path = activeInfo.name; // DEBUG

}

class StructuredUniform {

constructor( id ) {

this.id = id;

this.seq = [];
		this.map = {};

}

setValue( gl, value, textures ) {

const seq = this.seq;

for ( let i = 0, n = seq.length; i !== n; ++ i ) {

const u = seq[ i ];
			u.setValue( gl, value[ u.id ], textures );

}

// --- Top-level ---

// Parser - builds up the property tree from the path strings

const RePathPart = /(\w+)(\])?(\[|\.)?/g;

// extracts
// 	- the identifier (member name or array index)
//  - followed by an optional right bracket (found when array index)
//  - followed by an optional left bracket or dot (type of subscript)
//
// Note: These portions can be read in a non-overlapping fashion and
// allow straightforward parsing of the hierarchy that WebGL encodes
// in the uniform names.

function addUniform( container, uniformObject ) {

container.seq.push( uniformObject );
	container.map[ uniformObject.id ] = uniformObject;

}

function parseUniform( activeInfo, addr, container ) {

const path = activeInfo.name,
		pathLength = path.length;

// reset RegExp object, because of the early exit of a previous run
	RePathPart.lastIndex = 0;

while ( true ) {

const match = RePathPart.exec( path ),
			matchEnd = RePathPart.lastIndex;

let id = match[ 1 ];
		const idIsIndex = match[ 2 ] === ']',
			subscript = match[ 3 ];

if ( idIsIndex ) id = id | 0; // convert to integer

if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {

// bare name or "pure" bottom-level array "[0]" suffix

addUniform( container, subscript === undefined ?
				new SingleUniform( id, activeInfo, addr ) :
				new PureArrayUniform( id, activeInfo, addr ) );

break;

} else {

// step into inner node / create it in case it doesn't exist

const map = container.map;
			let next = map[ id ];

if ( next === undefined ) {

next = new StructuredUniform( id );
				addUniform( container, next );

}

container = next;

}

// Root Container

class WebGLUniforms {

constructor( gl, program ) {

this.seq = [];
		this.map = {};

const n = gl.getProgramParameter( program, 35718 );

for ( let i = 0; i < n; ++ i ) {

const info = gl.getActiveUniform( program, i ),
				addr = gl.getUniformLocation( program, info.name );

parseUniform( info, addr, this );

}

setValue( gl, name, value, textures ) {

const u = this.map[ name ];

if ( u !== undefined ) u.setValue( gl, value, textures );

}

setOptional( gl, object, name ) {

const v = object[ name ];

if ( v !== undefined ) this.setValue( gl, name, v );

}

static upload( gl, seq, values, textures ) {

for ( let i = 0, n = seq.length; i !== n; ++ i ) {

const u = seq[ i ],
				v = values[ u.id ];

if ( v.needsUpdate !== false ) {

// note: always updating when .needsUpdate is undefined
				u.setValue( gl, v.value, textures );

}

static seqWithValue( seq, values ) {

const r = [];

for ( let i = 0, n = seq.length; i !== n; ++ i ) {

const u = seq[ i ];
			if ( u.id in values ) r.push( u );

}

return r;

}

function WebGLShader( gl, type, string ) {

const shader = gl.createShader( type );

gl.shaderSource( shader, string );
	gl.compileShader( shader );

return shader;

}

let programIdCount = 0;

function handleSource( string, errorLine ) {

const lines = string.split( '\n' );
	const lines2 = [];

const from = Math.max( errorLine - 6, 0 );
	const to = Math.min( errorLine + 6, lines.length );

for ( let i = from; i < to; i ++ ) {

const line = i + 1;
		lines2.push( `${line === errorLine ? '>' : ' '} ${line}: ${lines[ i ]}` );

}

return lines2.join( '\n' );

}

function getEncodingComponents( encoding ) {

switch ( encoding ) {

case LinearEncoding:
			return [ 'Linear', '( value )' ];
		case sRGBEncoding:
			return [ 'sRGB', '( value )' ];
		default:
			console.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );
			return [ 'Linear', '( value )' ];

}

function getShaderErrors( gl, shader, type ) {

const status = gl.getShaderParameter( shader, 35713 );
	const errors = gl.getShaderInfoLog( shader ).trim();

if ( status && errors === '' ) return '';

const errorMatches = /ERROR: 0:(\d+)/.exec( errors );
	if ( errorMatches ) {

// --enable-privileged-webgl-extension
		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );

const errorLine = parseInt( errorMatches[ 1 ] );
		return type.toUpperCase() + '\n\n' + errors + '\n\n' + handleSource( gl.getShaderSource( shader ), errorLine );

} else {

return errors;

}

function getTexelEncodingFunction( functionName, encoding ) {

const components = getEncodingComponents( encoding );
	return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';

}

function getToneMappingFunction( functionName, toneMapping ) {

let toneMappingName;

switch ( toneMapping ) {

case LinearToneMapping:
			toneMappingName = 'Linear';
			break;

case ReinhardToneMapping:
			toneMappingName = 'Reinhard';
			break;

case CineonToneMapping:
			toneMappingName = 'OptimizedCineon';
			break;

case ACESFilmicToneMapping:
			toneMappingName = 'ACESFilmic';
			break;

case CustomToneMapping:
			toneMappingName = 'Custom';
			break;

default:
			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
			toneMappingName = 'Linear';

}

return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';

}

function generateExtensions( parameters ) {

const chunks = [
		( parameters.extensionDerivatives || !! parameters.envMapCubeUVHeight || parameters.bumpMap || parameters.normalMapTangentSpace || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
		( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
		( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
		( parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
	];

return chunks.filter( filterEmptyLine ).join( '\n' );

}

function generateDefines( defines ) {

const chunks = [];

for ( const name in defines ) {

const value = defines[ name ];

if ( value === false ) continue;

chunks.push( '#define ' + name + ' ' + value );

}

return chunks.join( '\n' );

}

function fetchAttributeLocations( gl, program ) {

const attributes = {};

const n = gl.getProgramParameter( program, 35721 );

for ( let i = 0; i < n; i ++ ) {

const info = gl.getActiveAttrib( program, i );
		const name = info.name;

let locationSize = 1;
		if ( info.type === 35674 ) locationSize = 2;
		if ( info.type === 35675 ) locationSize = 3;
		if ( info.type === 35676 ) locationSize = 4;

// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );

attributes[ name ] = {
			type: info.type,
			location: gl.getAttribLocation( program, name ),
			locationSize: locationSize
		};

}

return attributes;

}

function filterEmptyLine( string ) {

return string !== '';

}

function replaceLightNums( string, parameters ) {

const numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;

return string
		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
		.replace( /NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps )
		.replace( /NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords )
		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
		.replace( /NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps )
		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );

}

function replaceClippingPlaneNums( string, parameters ) {

return string
		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );

}

// Resolve Includes

const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;

function resolveIncludes( string ) {

return string.replace( includePattern, includeReplacer );

}

function includeReplacer( match, include ) {

const string = ShaderChunk[ include ];

if ( string === undefined ) {

throw new Error( 'Can not resolve #include <' + include + '>' );

}

return resolveIncludes( string );

}

// Unroll Loops

const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*$\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*$\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;

function unrollLoops( string ) {

return string.replace( unrollLoopPattern, loopReplacer );

}

function loopReplacer( match, start, end, snippet ) {

let string = '';

for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {

string += snippet
			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
			.replace( /UNROLLED_LOOP_INDEX/g, i );

}

return string;

}

function generatePrecision( parameters ) {

let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';

if ( parameters.precision === 'highp' ) {

precisionstring += '\n#define HIGH_PRECISION';

} else if ( parameters.precision === 'mediump' ) {

precisionstring += '\n#define MEDIUM_PRECISION';

} else if ( parameters.precision === 'lowp' ) {

precisionstring += '\n#define LOW_PRECISION';

}

return precisionstring;

}

function generateShadowMapTypeDefine( parameters ) {

let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';

if ( parameters.shadowMapType === PCFShadowMap ) {

shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';

} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {

shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';

} else if ( parameters.shadowMapType === VSMShadowMap ) {

shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';

}

return shadowMapTypeDefine;

}

function generateEnvMapTypeDefine( parameters ) {

let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';

if ( parameters.envMap ) {

switch ( parameters.envMapMode ) {

case CubeReflectionMapping:
			case CubeRefractionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
				break;

case CubeUVReflectionMapping:
				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
				break;

}

return envMapTypeDefine;

}

function generateEnvMapModeDefine( parameters ) {

let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';

if ( parameters.envMap ) {

switch ( parameters.envMapMode ) {

case CubeRefractionMapping:

envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
				break;

}

return envMapModeDefine;

}

function generateEnvMapBlendingDefine( parameters ) {

let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';

if ( parameters.envMap ) {

switch ( parameters.combine ) {

case MultiplyOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
				break;

case MixOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
				break;

case AddOperation:
				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
				break;

}

return envMapBlendingDefine;

}

function generateCubeUVSize( parameters ) {

const imageHeight = parameters.envMapCubeUVHeight;

if ( imageHeight === null ) return null;

const maxMip = Math.log2( imageHeight ) - 2;

const texelHeight = 1.0 / imageHeight;

const texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );

return { texelWidth, texelHeight, maxMip };

}

function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {

// TODO Send this event to Three.js DevTools
	// console.log( 'WebGLProgram', cacheKey );

const gl = renderer.getContext();

const defines = parameters.defines;

let vertexShader = parameters.vertexShader;
	let fragmentShader = parameters.fragmentShader;

const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
	const envMapModeDefine = generateEnvMapModeDefine( parameters );
	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
	const envMapCubeUVSize = generateCubeUVSize( parameters );

const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );

const customDefines = generateDefines( defines );

const program = gl.createProgram();

let prefixVertex, prefixFragment;
	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';

if ( parameters.isRawShaderMaterial ) {

prefixVertex = [

customDefines

].filter( filterEmptyLine ).join( '\n' );

if ( prefixVertex.length > 0 ) {

prefixVertex += '\n';

}

prefixFragment = [

customExtensions,
			customDefines

].filter( filterEmptyLine ).join( '\n' );

if ( prefixFragment.length > 0 ) {

prefixFragment += '\n';

}

} else {

prefixVertex = [

generatePrecision( parameters ),

'#define SHADER_NAME ' + parameters.shaderName,

customDefines,

parameters.instancing ? '#define USE_INSTANCING' : '',
			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',

parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
			parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',

parameters.map ? '#define USE_MAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
			parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
			parameters.displacementMap ? '#define USE_DISPLACEMENTMAP' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',

parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',

parameters.specularMap ? '#define USE_SPECULARMAP' : '',
			parameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',
			parameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',

parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',

parameters.transmission ? '#define USE_TRANSMISSION' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
			parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',

parameters.mapUv ? '#define MAP_UV ' + parameters.mapUv : '',
			parameters.alphaMapUv ? '#define ALPHAMAP_UV ' + parameters.alphaMapUv : '',
			parameters.lightMapUv ? '#define LIGHTMAP_UV ' + parameters.lightMapUv : '',
			parameters.aoMapUv ? '#define AOMAP_UV ' + parameters.aoMapUv : '',
			parameters.emissiveMapUv ? '#define EMISSIVEMAP_UV ' + parameters.emissiveMapUv : '',
			parameters.bumpMapUv ? '#define BUMPMAP_UV ' + parameters.bumpMapUv : '',
			parameters.normalMapUv ? '#define NORMALMAP_UV ' + parameters.normalMapUv : '',
			parameters.displacementMapUv ? '#define DISPLACEMENTMAP_UV ' + parameters.displacementMapUv : '',

parameters.metalnessMapUv ? '#define METALNESSMAP_UV ' + parameters.metalnessMapUv : '',
			parameters.roughnessMapUv ? '#define ROUGHNESSMAP_UV ' + parameters.roughnessMapUv : '',

parameters.clearcoatMapUv ? '#define CLEARCOATMAP_UV ' + parameters.clearcoatMapUv : '',
			parameters.clearcoatNormalMapUv ? '#define CLEARCOAT_NORMALMAP_UV ' + parameters.clearcoatNormalMapUv : '',
			parameters.clearcoatRoughnessMapUv ? '#define CLEARCOAT_ROUGHNESSMAP_UV ' + parameters.clearcoatRoughnessMapUv : '',

parameters.iridescenceMapUv ? '#define IRIDESCENCEMAP_UV ' + parameters.iridescenceMapUv : '',
			parameters.iridescenceThicknessMapUv ? '#define IRIDESCENCE_THICKNESSMAP_UV ' + parameters.iridescenceThicknessMapUv : '',

parameters.sheenColorMapUv ? '#define SHEEN_COLORMAP_UV ' + parameters.sheenColorMapUv : '',
			parameters.sheenRoughnessMapUv ? '#define SHEEN_ROUGHNESSMAP_UV ' + parameters.sheenRoughnessMapUv : '',

parameters.specularMapUv ? '#define SPECULARMAP_UV ' + parameters.specularMapUv : '',
			parameters.specularColorMapUv ? '#define SPECULAR_COLORMAP_UV ' + parameters.specularColorMapUv : '',
			parameters.specularIntensityMapUv ? '#define SPECULAR_INTENSITYMAP_UV ' + parameters.specularIntensityMapUv : '',

parameters.transmissionMapUv ? '#define TRANSMISSIONMAP_UV ' + parameters.transmissionMapUv : '',
			parameters.thicknessMapUv ? '#define THICKNESSMAP_UV ' + parameters.thicknessMapUv : '',

parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors ? '#define USE_COLOR' : '',
			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
			parameters.vertexUvs2 ? '#define USE_UV2' : '',

parameters.pointsUvs ? '#define USE_POINTS_UV' : '',

parameters.flatShading ? '#define FLAT_SHADED' : '',

parameters.skinning ? '#define USE_SKINNING' : '',

parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
			( parameters.morphColors && parameters.isWebGL2 ) ? '#define USE_MORPHCOLORS' : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE' : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',
			( parameters.morphTargetsCount > 0 && parameters.isWebGL2 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',
			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',

parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',

parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

'uniform mat4 modelMatrix;',
			'uniform mat4 modelViewMatrix;',
			'uniform mat4 projectionMatrix;',
			'uniform mat4 viewMatrix;',
			'uniform mat3 normalMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',

'#ifdef USE_INSTANCING',

'	attribute mat4 instanceMatrix;',

'#endif',

'#ifdef USE_INSTANCING_COLOR',

'	attribute vec3 instanceColor;',

'#endif',

'attribute vec3 position;',
			'attribute vec3 normal;',
			'attribute vec2 uv;',

'#ifdef USE_TANGENT',

'	attribute vec4 tangent;',

'#endif',

'#if defined( USE_COLOR_ALPHA )',

'	attribute vec4 color;',

'#elif defined( USE_COLOR )',

'	attribute vec3 color;',

'#endif',

'#if ( defined( USE_MORPHTARGETS ) && ! defined( MORPHTARGETS_TEXTURE ) )',

'	attribute vec3 morphTarget0;',
			'	attribute vec3 morphTarget1;',
			'	attribute vec3 morphTarget2;',
			'	attribute vec3 morphTarget3;',

'	#ifdef USE_MORPHNORMALS',

'		attribute vec3 morphNormal0;',
			'		attribute vec3 morphNormal1;',
			'		attribute vec3 morphNormal2;',
			'		attribute vec3 morphNormal3;',

'	#else',

'		attribute vec3 morphTarget4;',
			'		attribute vec3 morphTarget5;',
			'		attribute vec3 morphTarget6;',
			'		attribute vec3 morphTarget7;',

'	#endif',

'#endif',

'#ifdef USE_SKINNING',

'	attribute vec4 skinIndex;',
			'	attribute vec4 skinWeight;',

'#endif',

'\n'

].filter( filterEmptyLine ).join( '\n' );

prefixFragment = [

customExtensions,

generatePrecision( parameters ),

'#define SHADER_NAME ' + parameters.shaderName,

customDefines,

parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
			parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',

parameters.map ? '#define USE_MAP' : '',
			parameters.matcap ? '#define USE_MATCAP' : '',
			parameters.envMap ? '#define USE_ENVMAP' : '',
			parameters.envMap ? '#define ' + envMapTypeDefine : '',
			parameters.envMap ? '#define ' + envMapModeDefine : '',
			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
			envMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',
			envMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',
			envMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',
			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
			parameters.aoMap ? '#define USE_AOMAP' : '',
			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
			parameters.normalMap ? '#define USE_NORMALMAP' : '',
			parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
			parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',

parameters.clearcoat ? '#define USE_CLEARCOAT' : '',
			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',

parameters.iridescence ? '#define USE_IRIDESCENCE' : '',
			parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',

parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',

parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
			parameters.alphaTest ? '#define USE_ALPHATEST' : '',

parameters.sheen ? '#define USE_SHEEN' : '',
			parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
			parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',

parameters.transmission ? '#define USE_TRANSMISSION' : '',
			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',

parameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',

parameters.vertexTangents ? '#define USE_TANGENT' : '',
			parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
			parameters.vertexUvs2 ? '#define USE_UV2' : '',

parameters.pointsUvs ? '#define USE_POINTS_UV' : '',

parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',

parameters.flatShading ? '#define FLAT_SHADED' : '',

parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
			parameters.flipSided ? '#define FLIP_SIDED' : '',

parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',

parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',

parameters.useLegacyLights ? '#define LEGACY_LIGHTS' : '',

parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',

'uniform mat4 viewMatrix;',
			'uniform vec3 cameraPosition;',
			'uniform bool isOrthographic;',

( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',

parameters.dithering ? '#define DITHERING' : '',
			parameters.opaque ? '#define OPAQUE' : '',

ShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),

parameters.useDepthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',

'\n'

].filter( filterEmptyLine ).join( '\n' );

}

vertexShader = resolveIncludes( vertexShader );
	vertexShader = replaceLightNums( vertexShader, parameters );
	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );

fragmentShader = resolveIncludes( fragmentShader );
	fragmentShader = replaceLightNums( fragmentShader, parameters );
	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );

vertexShader = unrollLoops( vertexShader );
	fragmentShader = unrollLoops( fragmentShader );

if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {

// GLSL 3.0 conversion for built-in materials and ShaderMaterial

versionString = '#version 300 es\n';

prefixVertex = [
			'precision mediump sampler2DArray;',
			'#define attribute in',
			'#define varying out',
			'#define texture2D texture'
		].join( '\n' ) + '\n' + prefixVertex;

prefixFragment = [
			'#define varying in',
			( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',
			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
			'#define gl_FragDepthEXT gl_FragDepth',
			'#define texture2D texture',
			'#define textureCube texture',
			'#define texture2DProj textureProj',
			'#define texture2DLodEXT textureLod',
			'#define texture2DProjLodEXT textureProjLod',
			'#define textureCubeLodEXT textureLod',
			'#define texture2DGradEXT textureGrad',
			'#define texture2DProjGradEXT textureProjGrad',
			'#define textureCubeGradEXT textureGrad'
		].join( '\n' ) + '\n' + prefixFragment;

}

const vertexGlsl = versionString + prefixVertex + vertexShader;
	const fragmentGlsl = versionString + prefixFragment + fragmentShader;

// console.log( '*VERTEX*', vertexGlsl );
	// console.log( '*FRAGMENT*', fragmentGlsl );

const glVertexShader = WebGLShader( gl, 35633, vertexGlsl );
	const glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );

gl.attachShader( program, glVertexShader );
	gl.attachShader( program, glFragmentShader );

// Force a particular attribute to index 0.

if ( parameters.index0AttributeName !== undefined ) {

gl.bindAttribLocation( program, 0, parameters.index0AttributeName );

} else if ( parameters.morphTargets === true ) {

// programs with morphTargets displace position out of attribute 0
		gl.bindAttribLocation( program, 0, 'position' );

}

gl.linkProgram( program );

// check for link errors
	if ( renderer.debug.checkShaderErrors ) {

const programLog = gl.getProgramInfoLog( program ).trim();
		const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
		const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();

let runnable = true;
		let haveDiagnostics = true;

if ( gl.getProgramParameter( program, 35714 ) === false ) {

runnable = false;

if ( typeof renderer.debug.onShaderError === 'function' ) {

renderer.debug.onShaderError( gl, program, glVertexShader, glFragmentShader );

} else {

// default error reporting

const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
				const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );

console.error(
					'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +
					'VALIDATE_STATUS ' + gl.getProgramParameter( program, 35715 ) + '\n\n' +
					'Program Info Log: ' + programLog + '\n' +
					vertexErrors + '\n' +
					fragmentErrors
				);

}

} else if ( programLog !== '' ) {

console.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );

} else if ( vertexLog === '' || fragmentLog === '' ) {

haveDiagnostics = false;

}

if ( haveDiagnostics ) {

this.diagnostics = {

runnable: runnable,

programLog: programLog,

vertexShader: {

log: vertexLog,
					prefix: prefixVertex

fragmentShader: {

log: fragmentLog,
					prefix: prefixFragment

}

};

}

// Clean up

// Crashes in iOS9 and iOS10. #18402
	// gl.detachShader( program, glVertexShader );
	// gl.detachShader( program, glFragmentShader );

gl.deleteShader( glVertexShader );
	gl.deleteShader( glFragmentShader );

// set up caching for uniform locations

let cachedUniforms;

this.getUniforms = function () {

if ( cachedUniforms === undefined ) {

cachedUniforms = new WebGLUniforms( gl, program );

}

return cachedUniforms;

};

// set up caching for attribute locations

let cachedAttributes;

this.getAttributes = function () {

if ( cachedAttributes === undefined ) {

cachedAttributes = fetchAttributeLocations( gl, program );

}

return cachedAttributes;

};

// free resource

this.destroy = function () {

bindingStates.releaseStatesOfProgram( this );

gl.deleteProgram( program );
		this.program = undefined;

};

this.name = parameters.shaderName;
	this.id = programIdCount ++;
	this.cacheKey = cacheKey;
	this.usedTimes = 1;
	this.program = program;
	this.vertexShader = glVertexShader;
	this.fragmentShader = glFragmentShader;

return this;

}

let _id = 0;

class WebGLShaderCache {

constructor() {

this.shaderCache = new Map();
		this.materialCache = new Map();

}

update( material ) {

const vertexShader = material.vertexShader;
		const fragmentShader = material.fragmentShader;

const vertexShaderStage = this._getShaderStage( vertexShader );
		const fragmentShaderStage = this._getShaderStage( fragmentShader );

const materialShaders = this._getShaderCacheForMaterial( material );

if ( materialShaders.has( vertexShaderStage ) === false ) {

materialShaders.add( vertexShaderStage );
			vertexShaderStage.usedTimes ++;

}

if ( materialShaders.has( fragmentShaderStage ) === false ) {

materialShaders.add( fragmentShaderStage );
			fragmentShaderStage.usedTimes ++;

}

return this;

}

remove( material ) {

const materialShaders = this.materialCache.get( material );

for ( const shaderStage of materialShaders ) {

shaderStage.usedTimes --;

if ( shaderStage.usedTimes === 0 ) this.shaderCache.delete( shaderStage.code );

}

this.materialCache.delete( material );

return this;

}

getVertexShaderID( material ) {

return this._getShaderStage( material.vertexShader ).id;

}

getFragmentShaderID( material ) {

return this._getShaderStage( material.fragmentShader ).id;

}

dispose() {

this.shaderCache.clear();
		this.materialCache.clear();

}

_getShaderCacheForMaterial( material ) {

const cache = this.materialCache;
		let set = cache.get( material );

if ( set === undefined ) {

set = new Set();
			cache.set( material, set );

}

return set;

}

_getShaderStage( code ) {

const cache = this.shaderCache;
		let stage = cache.get( code );

if ( stage === undefined ) {

stage = new WebGLShaderStage( code );
			cache.set( code, stage );

}

return stage;

}

class WebGLShaderStage {

constructor( code ) {

this.id = _id ++;

this.code = code;
		this.usedTimes = 0;

}

function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping ) {

const _programLayers = new Layers();
	const _customShaders = new WebGLShaderCache();
	const programs = [];

const IS_WEBGL2 = capabilities.isWebGL2;
	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
	const SUPPORTS_VERTEX_TEXTURES = capabilities.vertexTextures;

let precision = capabilities.precision;

const shaderIDs = {
		MeshDepthMaterial: 'depth',
		MeshDistanceMaterial: 'distanceRGBA',
		MeshNormalMaterial: 'normal',
		MeshBasicMaterial: 'basic',
		MeshLambertMaterial: 'lambert',
		MeshPhongMaterial: 'phong',
		MeshToonMaterial: 'toon',
		MeshStandardMaterial: 'physical',
		MeshPhysicalMaterial: 'physical',
		MeshMatcapMaterial: 'matcap',
		LineBasicMaterial: 'basic',
		LineDashedMaterial: 'dashed',
		PointsMaterial: 'points',
		ShadowMaterial: 'shadow',
		SpriteMaterial: 'sprite'
	};

function getChannel( value ) {

if ( value === 1 ) return 'uv2';

return 'uv';

}

function getParameters( material, lights, shadows, scene, object ) {

const fog = scene.fog;
		const geometry = object.geometry;
		const environment = material.isMeshStandardMaterial ? scene.environment : null;

const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
		const envMapCubeUVHeight = ( !! envMap ) && ( envMap.mapping === CubeUVReflectionMapping ) ? envMap.image.height : null;

const shaderID = shaderIDs[ material.type ];

// heuristics to create shader parameters according to lights in the scene
		// (not to blow over maxLights budget)

if ( material.precision !== null ) {

precision = capabilities.getMaxPrecision( material.precision );

if ( precision !== material.precision ) {

console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );

}

const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;

let morphTextureStride = 0;

if ( geometry.morphAttributes.position !== undefined ) morphTextureStride = 1;
		if ( geometry.morphAttributes.normal !== undefined ) morphTextureStride = 2;
		if ( geometry.morphAttributes.color !== undefined ) morphTextureStride = 3;

let vertexShader, fragmentShader;
		let customVertexShaderID, customFragmentShaderID;

if ( shaderID ) {

const shader = ShaderLib[ shaderID ];

vertexShader = shader.vertexShader;
			fragmentShader = shader.fragmentShader;

} else {

vertexShader = material.vertexShader;
			fragmentShader = material.fragmentShader;

_customShaders.update( material );

customVertexShaderID = _customShaders.getVertexShaderID( material );
			customFragmentShaderID = _customShaders.getFragmentShaderID( material );

}

const currentRenderTarget = renderer.getRenderTarget();

const IS_INSTANCEDMESH = object.isInstancedMesh === true;

const HAS_MAP = !! material.map;
		const HAS_MATCAP = !! material.matcap;
		const HAS_ENVMAP = !! envMap;
		const HAS_AOMAP = !! material.aoMap;
		const HAS_LIGHTMAP = !! material.lightMap;
		const HAS_BUMPMAP = !! material.bumpMap;
		const HAS_NORMALMAP = !! material.normalMap;
		const HAS_DISPLACEMENTMAP = !! material.displacementMap;
		const HAS_EMISSIVEMAP = !! material.emissiveMap;

const HAS_METALNESSMAP = !! material.metalnessMap;
		const HAS_ROUGHNESSMAP = !! material.roughnessMap;

const HAS_CLEARCOAT = material.clearcoat > 0;
		const HAS_IRIDESCENCE = material.iridescence > 0;
		const HAS_SHEEN = material.sheen > 0;
		const HAS_TRANSMISSION = material.transmission > 0;

const HAS_CLEARCOATMAP = HAS_CLEARCOAT && !! material.clearcoatMap;
		const HAS_CLEARCOAT_NORMALMAP = HAS_CLEARCOAT && !! material.clearcoatNormalMap;
		const HAS_CLEARCOAT_ROUGHNESSMAP = HAS_CLEARCOAT && !! material.clearcoatRoughnessMap;

const HAS_IRIDESCENCEMAP = HAS_IRIDESCENCE && !! material.iridescenceMap;
		const HAS_IRIDESCENCE_THICKNESSMAP = HAS_IRIDESCENCE && !! material.iridescenceThicknessMap;

const HAS_SHEEN_COLORMAP = HAS_SHEEN && !! material.sheenColorMap;
		const HAS_SHEEN_ROUGHNESSMAP = HAS_SHEEN && !! material.sheenRoughnessMap;

const HAS_SPECULARMAP = !! material.specularMap;
		const HAS_SPECULAR_COLORMAP = !! material.specularColorMap;
		const HAS_SPECULAR_INTENSITYMAP = !! material.specularIntensityMap;

const HAS_TRANSMISSIONMAP = HAS_TRANSMISSION && !! material.transmissionMap;
		const HAS_THICKNESSMAP = HAS_TRANSMISSION && !! material.thicknessMap;

const HAS_GRADIENTMAP = !! material.gradientMap;

const HAS_ALPHAMAP = !! material.alphaMap;

const HAS_ALPHATEST = material.alphaTest > 0;

const HAS_EXTENSIONS = !! material.extensions;

const HAS_ATTRIBUTE_UV2 = !! geometry.attributes.uv2;

const parameters = {

isWebGL2: IS_WEBGL2,

shaderID: shaderID,
			shaderName: material.type,

vertexShader: vertexShader,
			fragmentShader: fragmentShader,
			defines: material.defines,

customVertexShaderID: customVertexShaderID,
			customFragmentShaderID: customFragmentShaderID,

isRawShaderMaterial: material.isRawShaderMaterial === true,
			glslVersion: material.glslVersion,

precision: precision,

instancing: IS_INSTANCEDMESH,
			instancingColor: IS_INSTANCEDMESH && object.instanceColor !== null,

supportsVertexTextures: SUPPORTS_VERTEX_TEXTURES,
			outputEncoding: ( currentRenderTarget === null ) ? renderer.outputEncoding : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.encoding : LinearEncoding ),

map: HAS_MAP,
			matcap: HAS_MATCAP,
			envMap: HAS_ENVMAP,
			envMapMode: HAS_ENVMAP && envMap.mapping,
			envMapCubeUVHeight: envMapCubeUVHeight,
			aoMap: HAS_AOMAP,
			lightMap: HAS_LIGHTMAP,
			bumpMap: HAS_BUMPMAP,
			normalMap: HAS_NORMALMAP,
			displacementMap: SUPPORTS_VERTEX_TEXTURES && HAS_DISPLACEMENTMAP,
			emissiveMap: HAS_EMISSIVEMAP,

normalMapObjectSpace: HAS_NORMALMAP && material.normalMapType === ObjectSpaceNormalMap,
			normalMapTangentSpace: HAS_NORMALMAP && material.normalMapType === TangentSpaceNormalMap,

decodeVideoTexture: HAS_MAP && ( material.map.isVideoTexture === true ) && ( material.map.encoding === sRGBEncoding ),

metalnessMap: HAS_METALNESSMAP,
			roughnessMap: HAS_ROUGHNESSMAP,

clearcoat: HAS_CLEARCOAT,
			clearcoatMap: HAS_CLEARCOATMAP,
			clearcoatNormalMap: HAS_CLEARCOAT_NORMALMAP,
			clearcoatRoughnessMap: HAS_CLEARCOAT_ROUGHNESSMAP,

iridescence: HAS_IRIDESCENCE,
			iridescenceMap: HAS_IRIDESCENCEMAP,
			iridescenceThicknessMap: HAS_IRIDESCENCE_THICKNESSMAP,

sheen: HAS_SHEEN,
			sheenColorMap: HAS_SHEEN_COLORMAP,
			sheenRoughnessMap: HAS_SHEEN_ROUGHNESSMAP,

specularMap: HAS_SPECULARMAP,
			specularColorMap: HAS_SPECULAR_COLORMAP,
			specularIntensityMap: HAS_SPECULAR_INTENSITYMAP,

transmission: HAS_TRANSMISSION,
			transmissionMap: HAS_TRANSMISSIONMAP,
			thicknessMap: HAS_THICKNESSMAP,

gradientMap: HAS_GRADIENTMAP,

opaque: material.transparent === false && material.blending === NormalBlending,

alphaMap: HAS_ALPHAMAP,
			alphaTest: HAS_ALPHATEST,

combine: material.combine,

mapUv: HAS_MAP && getChannel( material.map.channel ),
			aoMapUv: HAS_AOMAP && getChannel( material.aoMap.channel ),
			lightMapUv: HAS_LIGHTMAP && getChannel( material.lightMap.channel ),
			bumpMapUv: HAS_BUMPMAP && getChannel( material.bumpMap.channel ),
			normalMapUv: HAS_NORMALMAP && getChannel( material.normalMap.channel ),
			displacementMapUv: HAS_DISPLACEMENTMAP && getChannel( material.displacementMap.channel ),
			emissiveMapUv: HAS_EMISSIVEMAP && getChannel( material.emissiveMap.channel ),

metalnessMapUv: HAS_METALNESSMAP && getChannel( material.metalnessMap.channel ),
			roughnessMapUv: HAS_ROUGHNESSMAP && getChannel( material.roughnessMap.channel ),

clearcoatMapUv: HAS_CLEARCOATMAP && getChannel( material.clearcoatMap.channel ),
			clearcoatNormalMapUv: HAS_CLEARCOAT_NORMALMAP && getChannel( material.clearcoatNormalMap.channel ),
			clearcoatRoughnessMapUv: HAS_CLEARCOAT_ROUGHNESSMAP && getChannel( material.clearcoatRoughnessMap.channel ),

iridescenceMapUv: HAS_IRIDESCENCEMAP && getChannel( material.iridescenceMap.channel ),
			iridescenceThicknessMapUv: HAS_IRIDESCENCE_THICKNESSMAP && getChannel( material.iridescenceThicknessMap.channel ),

sheenColorMapUv: HAS_SHEEN_COLORMAP && getChannel( material.sheenColorMap.channel ),
			sheenRoughnessMapUv: HAS_SHEEN_ROUGHNESSMAP && getChannel( material.sheenRoughnessMap.channel ),

specularMapUv: HAS_SPECULARMAP && getChannel( material.specularMap.channel ),
			specularColorMapUv: HAS_SPECULAR_COLORMAP && getChannel( material.specularColorMap.channel ),
			specularIntensityMapUv: HAS_SPECULAR_INTENSITYMAP && getChannel( material.specularIntensityMap.channel ),

transmissionMapUv: HAS_TRANSMISSIONMAP && getChannel( material.transmissionMap.channel ),
			thicknessMapUv: HAS_THICKNESSMAP && getChannel( material.thicknessMap.channel ),

alphaMapUv: HAS_ALPHAMAP && getChannel( material.alphaMap.channel ),

vertexTangents: HAS_NORMALMAP && !! geometry.attributes.tangent,
			vertexColors: material.vertexColors,
			vertexAlphas: material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4,
			vertexUvs2: HAS_ATTRIBUTE_UV2,

pointsUvs: object.isPoints === true && !! geometry.attributes.uv && ( HAS_MAP || HAS_ALPHAMAP ),

fog: !! fog,
			useFog: material.fog === true,
			fogExp2: ( fog && fog.isFogExp2 ),

flatShading: material.flatShading === true,

sizeAttenuation: material.sizeAttenuation === true,
			logarithmicDepthBuffer: logarithmicDepthBuffer,

skinning: object.isSkinnedMesh === true,

morphTargets: geometry.morphAttributes.position !== undefined,
			morphNormals: geometry.morphAttributes.normal !== undefined,
			morphColors: geometry.morphAttributes.color !== undefined,
			morphTargetsCount: morphTargetsCount,
			morphTextureStride: morphTextureStride,

numDirLights: lights.directional.length,
			numPointLights: lights.point.length,
			numSpotLights: lights.spot.length,
			numSpotLightMaps: lights.spotLightMap.length,
			numRectAreaLights: lights.rectArea.length,
			numHemiLights: lights.hemi.length,

numDirLightShadows: lights.directionalShadowMap.length,
			numPointLightShadows: lights.pointShadowMap.length,
			numSpotLightShadows: lights.spotShadowMap.length,
			numSpotLightShadowsWithMaps: lights.numSpotLightShadowsWithMaps,

numClippingPlanes: clipping.numPlanes,
			numClipIntersection: clipping.numIntersection,

dithering: material.dithering,

shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
			shadowMapType: renderer.shadowMap.type,

toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
			useLegacyLights: renderer.useLegacyLights,

premultipliedAlpha: material.premultipliedAlpha,

doubleSided: material.side === DoubleSide,
			flipSided: material.side === BackSide,

useDepthPacking: material.depthPacking >= 0,
			depthPacking: material.depthPacking || 0,

index0AttributeName: material.index0AttributeName,

extensionDerivatives: HAS_EXTENSIONS && material.extensions.derivatives === true,
			extensionFragDepth: HAS_EXTENSIONS && material.extensions.fragDepth === true,
			extensionDrawBuffers: HAS_EXTENSIONS && material.extensions.drawBuffers === true,
			extensionShaderTextureLOD: HAS_EXTENSIONS && material.extensions.shaderTextureLOD === true,

rendererExtensionFragDepth: IS_WEBGL2 || extensions.has( 'EXT_frag_depth' ),
			rendererExtensionDrawBuffers: IS_WEBGL2 || extensions.has( 'WEBGL_draw_buffers' ),
			rendererExtensionShaderTextureLod: IS_WEBGL2 || extensions.has( 'EXT_shader_texture_lod' ),

customProgramCacheKey: material.customProgramCacheKey()

};

return parameters;

}

function getProgramCacheKey( parameters ) {

const array = [];

if ( parameters.shaderID ) {

array.push( parameters.shaderID );

} else {

array.push( parameters.customVertexShaderID );
			array.push( parameters.customFragmentShaderID );

}

if ( parameters.defines !== undefined ) {

for ( const name in parameters.defines ) {

array.push( name );
				array.push( parameters.defines[ name ] );

}

if ( parameters.isRawShaderMaterial === false ) {

getProgramCacheKeyParameters( array, parameters );
			getProgramCacheKeyBooleans( array, parameters );
			array.push( renderer.outputEncoding );

}

array.push( parameters.customProgramCacheKey );

return array.join();

}

function getProgramCacheKeyParameters( array, parameters ) {

array.push( parameters.precision );
		array.push( parameters.outputEncoding );
		array.push( parameters.envMapMode );
		array.push( parameters.envMapCubeUVHeight );
		array.push( parameters.mapUv );
		array.push( parameters.alphaMapUv );
		array.push( parameters.lightMapUv );
		array.push( parameters.aoMapUv );
		array.push( parameters.bumpMapUv );
		array.push( parameters.normalMapUv );
		array.push( parameters.displacementMapUv );
		array.push( parameters.emissiveMapUv );
		array.push( parameters.metalnessMapUv );
		array.push( parameters.roughnessMapUv );
		array.push( parameters.clearcoatMapUv );
		array.push( parameters.clearcoatNormalMapUv );
		array.push( parameters.clearcoatRoughnessMapUv );
		array.push( parameters.iridescenceMapUv );
		array.push( parameters.iridescenceThicknessMapUv );
		array.push( parameters.sheenColorMapUv );
		array.push( parameters.sheenRoughnessMapUv );
		array.push( parameters.specularMapUv );
		array.push( parameters.specularColorMapUv );
		array.push( parameters.specularIntensityMapUv );
		array.push( parameters.transmissionMapUv );
		array.push( parameters.thicknessMapUv );
		array.push( parameters.combine );
		array.push( parameters.fogExp2 );
		array.push( parameters.sizeAttenuation );
		array.push( parameters.morphTargetsCount );
		array.push( parameters.morphAttributeCount );
		array.push( parameters.numDirLights );
		array.push( parameters.numPointLights );
		array.push( parameters.numSpotLights );
		array.push( parameters.numSpotLightMaps );
		array.push( parameters.numHemiLights );
		array.push( parameters.numRectAreaLights );
		array.push( parameters.numDirLightShadows );
		array.push( parameters.numPointLightShadows );
		array.push( parameters.numSpotLightShadows );
		array.push( parameters.numSpotLightShadowsWithMaps );
		array.push( parameters.shadowMapType );
		array.push( parameters.toneMapping );
		array.push( parameters.numClippingPlanes );
		array.push( parameters.numClipIntersection );
		array.push( parameters.depthPacking );

}

function getProgramCacheKeyBooleans( array, parameters ) {

_programLayers.disableAll();

if ( parameters.isWebGL2 )
			_programLayers.enable( 0 );
		if ( parameters.supportsVertexTextures )
			_programLayers.enable( 1 );
		if ( parameters.instancing )
			_programLayers.enable( 2 );
		if ( parameters.instancingColor )
			_programLayers.enable( 3 );
		if ( parameters.matcap )
			_programLayers.enable( 4 );
		if ( parameters.envMap )
			_programLayers.enable( 5 );
		if ( parameters.normalMapObjectSpace )
			_programLayers.enable( 6 );
		if ( parameters.normalMapTangentSpace )
			_programLayers.enable( 7 );
		if ( parameters.clearcoat )
			_programLayers.enable( 8 );
		if ( parameters.iridescence )
			_programLayers.enable( 9 );
		if ( parameters.alphaTest )
			_programLayers.enable( 10 );
		if ( parameters.vertexColors )
			_programLayers.enable( 11 );
		if ( parameters.vertexAlphas )
			_programLayers.enable( 12 );
		if ( parameters.vertexUvs2 )
			_programLayers.enable( 13 );
		if ( parameters.vertexTangents )
			_programLayers.enable( 14 );

array.push( _programLayers.mask );
		_programLayers.disableAll();

if ( parameters.fog )
			_programLayers.enable( 0 );
		if ( parameters.useFog )
			_programLayers.enable( 1 );
		if ( parameters.flatShading )
			_programLayers.enable( 2 );
		if ( parameters.logarithmicDepthBuffer )
			_programLayers.enable( 3 );
		if ( parameters.skinning )
			_programLayers.enable( 4 );
		if ( parameters.morphTargets )
			_programLayers.enable( 5 );
		if ( parameters.morphNormals )
			_programLayers.enable( 6 );
		if ( parameters.morphColors )
			_programLayers.enable( 7 );
		if ( parameters.premultipliedAlpha )
			_programLayers.enable( 8 );
		if ( parameters.shadowMapEnabled )
			_programLayers.enable( 9 );
		if ( parameters.useLegacyLights )
			_programLayers.enable( 10 );
		if ( parameters.doubleSided )
			_programLayers.enable( 11 );
		if ( parameters.flipSided )
			_programLayers.enable( 12 );
		if ( parameters.useDepthPacking )
			_programLayers.enable( 13 );
		if ( parameters.dithering )
			_programLayers.enable( 14 );
		if ( parameters.transmission )
			_programLayers.enable( 15 );
		if ( parameters.sheen )
			_programLayers.enable( 16 );
		if ( parameters.decodeVideoTexture )
			_programLayers.enable( 17 );
		if ( parameters.opaque )
			_programLayers.enable( 18 );
		if ( parameters.pointsUvs )
			_programLayers.enable( 19 );

array.push( _programLayers.mask );

}

function getUniforms( material ) {

const shaderID = shaderIDs[ material.type ];
		let uniforms;

if ( shaderID ) {

const shader = ShaderLib[ shaderID ];
			uniforms = UniformsUtils.clone( shader.uniforms );

} else {

uniforms = material.uniforms;

}

return uniforms;

}

function acquireProgram( parameters, cacheKey ) {

let program;

// Check if code has been already compiled
		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {

const preexistingProgram = programs[ p ];

if ( preexistingProgram.cacheKey === cacheKey ) {

program = preexistingProgram;
				++ program.usedTimes;

break;

}

if ( program === undefined ) {

program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
			programs.push( program );

}

return program;

}

function releaseProgram( program ) {

if ( -- program.usedTimes === 0 ) {

// Remove from unordered set
			const i = programs.indexOf( program );
			programs[ i ] = programs[ programs.length - 1 ];
			programs.pop();

// Free WebGL resources
			program.destroy();

}

function releaseShaderCache( material ) {

_customShaders.remove( material );

}

function dispose() {

_customShaders.dispose();

}

return {
		getParameters: getParameters,
		getProgramCacheKey: getProgramCacheKey,
		getUniforms: getUniforms,
		acquireProgram: acquireProgram,
		releaseProgram: releaseProgram,
		releaseShaderCache: releaseShaderCache,
		// Exposed for resource monitoring & error feedback via renderer.info:
		programs: programs,
		dispose: dispose
	};

}

function WebGLProperties() {

let properties = new WeakMap();

function get( object ) {

let map = properties.get( object );

if ( map === undefined ) {

map = {};
			properties.set( object, map );

}

return map;

}

function remove( object ) {

properties.delete( object );

}

function update( object, key, value ) {

properties.get( object )[ key ] = value;

}

function dispose() {

properties = new WeakMap();

}

return {
		get: get,
		remove: remove,
		update: update,
		dispose: dispose
	};

}

function painterSortStable( a, b ) {

if ( a.groupOrder !== b.groupOrder ) {

return a.groupOrder - b.groupOrder;

} else if ( a.renderOrder !== b.renderOrder ) {

return a.renderOrder - b.renderOrder;

} else if ( a.material.id !== b.material.id ) {

return a.material.id - b.material.id;

} else if ( a.z !== b.z ) {

return a.z - b.z;

} else {

return a.id - b.id;

}

function reversePainterSortStable( a, b ) {

if ( a.groupOrder !== b.groupOrder ) {

return a.groupOrder - b.groupOrder;

} else if ( a.renderOrder !== b.renderOrder ) {

return a.renderOrder - b.renderOrder;

} else if ( a.z !== b.z ) {

return b.z - a.z;

} else {

return a.id - b.id;

}

function WebGLRenderList() {

const renderItems = [];
	let renderItemsIndex = 0;

const opaque = [];
	const transmissive = [];
	const transparent = [];

function init() {

renderItemsIndex = 0;

opaque.length = 0;
		transmissive.length = 0;
		transparent.length = 0;

}

function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {

let renderItem = renderItems[ renderItemsIndex ];

if ( renderItem === undefined ) {

renderItem = {
				id: object.id,
				object: object,
				geometry: geometry,
				material: material,
				groupOrder: groupOrder,
				renderOrder: object.renderOrder,
				z: z,
				group: group
			};

renderItems[ renderItemsIndex ] = renderItem;

} else {

renderItem.id = object.id;
			renderItem.object = object;
			renderItem.geometry = geometry;
			renderItem.material = material;
			renderItem.groupOrder = groupOrder;
			renderItem.renderOrder = object.renderOrder;
			renderItem.z = z;
			renderItem.group = group;

}

renderItemsIndex ++;

return renderItem;

}

function push( object, geometry, material, groupOrder, z, group ) {

const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

if ( material.transmission > 0.0 ) {

transmissive.push( renderItem );

} else if ( material.transparent === true ) {

transparent.push( renderItem );

} else {

opaque.push( renderItem );

}

function unshift( object, geometry, material, groupOrder, z, group ) {

const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );

if ( material.transmission > 0.0 ) {

transmissive.unshift( renderItem );

} else if ( material.transparent === true ) {

transparent.unshift( renderItem );

} else {

opaque.unshift( renderItem );

}

function sort( customOpaqueSort, customTransparentSort ) {

if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
		if ( transmissive.length > 1 ) transmissive.sort( customTransparentSort || reversePainterSortStable );
		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );

}

function finish() {

// Clear references from inactive renderItems in the list

for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {

const renderItem = renderItems[ i ];

if ( renderItem.id === null ) break;

renderItem.id = null;
			renderItem.object = null;
			renderItem.geometry = null;
			renderItem.material = null;
			renderItem.group = null;

}

return {

opaque: opaque,
		transmissive: transmissive,
		transparent: transparent,

init: init,
		push: push,
		unshift: unshift,
		finish: finish,

sort: sort
	};

}

function WebGLRenderLists() {

let lists = new WeakMap();

function get( scene, renderCallDepth ) {

const listArray = lists.get( scene );
		let list;

if ( listArray === undefined ) {

list = new WebGLRenderList();
			lists.set( scene, [ list ] );

} else {

if ( renderCallDepth >= listArray.length ) {

list = new WebGLRenderList();
				listArray.push( list );

} else {

list = listArray[ renderCallDepth ];

}

return list;

}

function dispose() {

lists = new WeakMap();

}

return {
		get: get,
		dispose: dispose
	};

}

function UniformsCache() {

const lights = {};

return {

get: function ( light ) {

if ( lights[ light.id ] !== undefined ) {

return lights[ light.id ];

}

let uniforms;

switch ( light.type ) {

case 'DirectionalLight':
					uniforms = {
						direction: new Vector3(),
						color: new Color()
					};
					break;

case 'SpotLight':
					uniforms = {
						position: new Vector3(),
						direction: new Vector3(),
						color: new Color(),
						distance: 0,
						coneCos: 0,
						penumbraCos: 0,
						decay: 0
					};
					break;

case 'PointLight':
					uniforms = {
						position: new Vector3(),
						color: new Color(),
						distance: 0,
						decay: 0
					};
					break;

case 'HemisphereLight':
					uniforms = {
						direction: new Vector3(),
						skyColor: new Color(),
						groundColor: new Color()
					};
					break;

case 'RectAreaLight':
					uniforms = {
						color: new Color(),
						position: new Vector3(),
						halfWidth: new Vector3(),
						halfHeight: new Vector3()
					};
					break;

}

lights[ light.id ] = uniforms;

return uniforms;

}

};

}

function ShadowUniformsCache() {

const lights = {};

return {

get: function ( light ) {

if ( lights[ light.id ] !== undefined ) {

return lights[ light.id ];

}

let uniforms;

switch ( light.type ) {

case 'DirectionalLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;

case 'SpotLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2()
					};
					break;

case 'PointLight':
					uniforms = {
						shadowBias: 0,
						shadowNormalBias: 0,
						shadowRadius: 1,
						shadowMapSize: new Vector2(),
						shadowCameraNear: 1,
						shadowCameraFar: 1000
					};
					break;

// TODO (abelnation): set RectAreaLight shadow uniforms

}

lights[ light.id ] = uniforms;

return uniforms;

}

};

}

let nextVersion = 0;

function shadowCastingAndTexturingLightsFirst( lightA, lightB ) {

return ( lightB.castShadow ? 2 : 0 ) - ( lightA.castShadow ? 2 : 0 ) + ( lightB.map ? 1 : 0 ) - ( lightA.map ? 1 : 0 );

}

function WebGLLights( extensions, capabilities ) {

const cache = new UniformsCache();

const shadowCache = ShadowUniformsCache();

const state = {

version: 0,

hash: {
			directionalLength: - 1,
			pointLength: - 1,
			spotLength: - 1,
			rectAreaLength: - 1,
			hemiLength: - 1,

numDirectionalShadows: - 1,
			numPointShadows: - 1,
			numSpotShadows: - 1,
			numSpotMaps: - 1
		},

ambient: [ 0, 0, 0 ],
		probe: [],
		directional: [],
		directionalShadow: [],
		directionalShadowMap: [],
		directionalShadowMatrix: [],
		spot: [],
		spotLightMap: [],
		spotShadow: [],
		spotShadowMap: [],
		spotLightMatrix: [],
		rectArea: [],
		rectAreaLTC1: null,
		rectAreaLTC2: null,
		point: [],
		pointShadow: [],
		pointShadowMap: [],
		pointShadowMatrix: [],
		hemi: [],
		numSpotLightShadowsWithMaps: 0

};

for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );

const vector3 = new Vector3();
	const matrix4 = new Matrix4();
	const matrix42 = new Matrix4();

function setup( lights, useLegacyLights ) {

let r = 0, g = 0, b = 0;

for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );

let directionalLength = 0;
		let pointLength = 0;
		let spotLength = 0;
		let rectAreaLength = 0;
		let hemiLength = 0;

let numDirectionalShadows = 0;
		let numPointShadows = 0;
		let numSpotShadows = 0;
		let numSpotMaps = 0;
		let numSpotShadowsWithMaps = 0;

// ordering : [shadow casting + map texturing, map texturing, shadow casting, none ]
		lights.sort( shadowCastingAndTexturingLightsFirst );

// artist-friendly light intensity scaling factor
		const scaleFactor = ( useLegacyLights === true ) ? Math.PI : 1;

for ( let i = 0, l = lights.length; i < l; i ++ ) {

const light = lights[ i ];

const color = light.color;
			const intensity = light.intensity;
			const distance = light.distance;

const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;

if ( light.isAmbientLight ) {

r += color.r * intensity * scaleFactor;
				g += color.g * intensity * scaleFactor;
				b += color.b * intensity * scaleFactor;

} else if ( light.isLightProbe ) {

for ( let j = 0; j < 9; j ++ ) {

state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );

}

} else if ( light.isDirectionalLight ) {

const uniforms = cache.get( light );

uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );

if ( light.castShadow ) {

const shadow = light.shadow;

const shadowUniforms = shadowCache.get( light );

state.directionalShadow[ directionalLength ] = shadowUniforms;
					state.directionalShadowMap[ directionalLength ] = shadowMap;
					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;

numDirectionalShadows ++;

}

state.directional[ directionalLength ] = uniforms;

directionalLength ++;

} else if ( light.isSpotLight ) {

const uniforms = cache.get( light );

uniforms.position.setFromMatrixPosition( light.matrixWorld );

uniforms.color.copy( color ).multiplyScalar( intensity * scaleFactor );
				uniforms.distance = distance;

uniforms.coneCos = Math.cos( light.angle );
				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
				uniforms.decay = light.decay;

state.spot[ spotLength ] = uniforms;

const shadow = light.shadow;

if ( light.map ) {

state.spotLightMap[ numSpotMaps ] = light.map;
					numSpotMaps ++;

// make sure the lightMatrix is up to date
					// TODO : do it if required only
					shadow.updateMatrices( light );

if ( light.castShadow ) numSpotShadowsWithMaps ++;

}

state.spotLightMatrix[ spotLength ] = shadow.matrix;

if ( light.castShadow ) {

const shadowUniforms = shadowCache.get( light );

state.spotShadow[ spotLength ] = shadowUniforms;
					state.spotShadowMap[ spotLength ] = shadowMap;

numSpotShadows ++;

}

spotLength ++;

} else if ( light.isRectAreaLight ) {

const uniforms = cache.get( light );

uniforms.color.copy( color ).multiplyScalar( intensity );

uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

state.rectArea[ rectAreaLength ] = uniforms;

rectAreaLength ++;

} else if ( light.isPointLight ) {

const uniforms = cache.get( light );

uniforms.color.copy( light.color ).multiplyScalar( light.intensity * scaleFactor );
				uniforms.distance = light.distance;
				uniforms.decay = light.decay;

if ( light.castShadow ) {

const shadow = light.shadow;

const shadowUniforms = shadowCache.get( light );

shadowUniforms.shadowBias = shadow.bias;
					shadowUniforms.shadowNormalBias = shadow.normalBias;
					shadowUniforms.shadowRadius = shadow.radius;
					shadowUniforms.shadowMapSize = shadow.mapSize;
					shadowUniforms.shadowCameraNear = shadow.camera.near;
					shadowUniforms.shadowCameraFar = shadow.camera.far;

state.pointShadow[ pointLength ] = shadowUniforms;
					state.pointShadowMap[ pointLength ] = shadowMap;
					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;

numPointShadows ++;

}

state.point[ pointLength ] = uniforms;

pointLength ++;

} else if ( light.isHemisphereLight ) {

const uniforms = cache.get( light );

uniforms.skyColor.copy( light.color ).multiplyScalar( intensity * scaleFactor );
				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity * scaleFactor );

state.hemi[ hemiLength ] = uniforms;

hemiLength ++;

}

if ( rectAreaLength > 0 ) {

if ( capabilities.isWebGL2 ) {

// WebGL 2

state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
				state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

} else {

// WebGL 1

if ( extensions.has( 'OES_texture_float_linear' ) === true ) {

state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;

} else if ( extensions.has( 'OES_texture_half_float_linear' ) === true ) {

state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
					state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;

} else {

console.error( 'THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.' );

}

state.ambient[ 0 ] = r;
		state.ambient[ 1 ] = g;
		state.ambient[ 2 ] = b;

const hash = state.hash;

if ( hash.directionalLength !== directionalLength ||
			hash.pointLength !== pointLength ||
			hash.spotLength !== spotLength ||
			hash.rectAreaLength !== rectAreaLength ||
			hash.hemiLength !== hemiLength ||
			hash.numDirectionalShadows !== numDirectionalShadows ||
			hash.numPointShadows !== numPointShadows ||
			hash.numSpotShadows !== numSpotShadows ||
			hash.numSpotMaps !== numSpotMaps ) {

state.directional.length = directionalLength;
			state.spot.length = spotLength;
			state.rectArea.length = rectAreaLength;
			state.point.length = pointLength;
			state.hemi.length = hemiLength;

state.directionalShadow.length = numDirectionalShadows;
			state.directionalShadowMap.length = numDirectionalShadows;
			state.pointShadow.length = numPointShadows;
			state.pointShadowMap.length = numPointShadows;
			state.spotShadow.length = numSpotShadows;
			state.spotShadowMap.length = numSpotShadows;
			state.directionalShadowMatrix.length = numDirectionalShadows;
			state.pointShadowMatrix.length = numPointShadows;
			state.spotLightMatrix.length = numSpotShadows + numSpotMaps - numSpotShadowsWithMaps;
			state.spotLightMap.length = numSpotMaps;
			state.numSpotLightShadowsWithMaps = numSpotShadowsWithMaps;

hash.directionalLength = directionalLength;
			hash.pointLength = pointLength;
			hash.spotLength = spotLength;
			hash.rectAreaLength = rectAreaLength;
			hash.hemiLength = hemiLength;

hash.numDirectionalShadows = numDirectionalShadows;
			hash.numPointShadows = numPointShadows;
			hash.numSpotShadows = numSpotShadows;
			hash.numSpotMaps = numSpotMaps;

state.version = nextVersion ++;

}

function setupView( lights, camera ) {

let directionalLength = 0;
		let pointLength = 0;
		let spotLength = 0;
		let rectAreaLength = 0;
		let hemiLength = 0;

const viewMatrix = camera.matrixWorldInverse;

for ( let i = 0, l = lights.length; i < l; i ++ ) {

const light = lights[ i ];

if ( light.isDirectionalLight ) {

const uniforms = state.directional[ directionalLength ];

uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				vector3.setFromMatrixPosition( light.target.matrixWorld );
				uniforms.direction.sub( vector3 );
				uniforms.direction.transformDirection( viewMatrix );

directionalLength ++;

} else if ( light.isSpotLight ) {

const uniforms = state.spot[ spotLength ];

uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

spotLength ++;

} else if ( light.isRectAreaLight ) {

const uniforms = state.rectArea[ rectAreaLength ];

uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

// extract local rotation of light to derive width/height half vectors
				matrix42.identity();
				matrix4.copy( light.matrixWorld );
				matrix4.premultiply( viewMatrix );
				matrix42.extractRotation( matrix4 );

uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );

uniforms.halfWidth.applyMatrix4( matrix42 );
				uniforms.halfHeight.applyMatrix4( matrix42 );

rectAreaLength ++;

} else if ( light.isPointLight ) {

const uniforms = state.point[ pointLength ];

uniforms.position.setFromMatrixPosition( light.matrixWorld );
				uniforms.position.applyMatrix4( viewMatrix );

pointLength ++;

} else if ( light.isHemisphereLight ) {

const uniforms = state.hemi[ hemiLength ];

uniforms.direction.setFromMatrixPosition( light.matrixWorld );
				uniforms.direction.transformDirection( viewMatrix );

hemiLength ++;

}

return {
		setup: setup,
		setupView: setupView,
		state: state
	};

}

function WebGLRenderState( extensions, capabilities ) {

const lights = new WebGLLights( extensions, capabilities );

const lightsArray = [];
	const shadowsArray = [];

function init() {

lightsArray.length = 0;
		shadowsArray.length = 0;

}

function pushLight( light ) {

lightsArray.push( light );

}

function pushShadow( shadowLight ) {

shadowsArray.push( shadowLight );

}

function setupLights( useLegacyLights ) {

lights.setup( lightsArray, useLegacyLights );

}

function setupLightsView( camera ) {

lights.setupView( lightsArray, camera );

}

const state = {
		lightsArray: lightsArray,
		shadowsArray: shadowsArray,

lights: lights
	};

return {
		init: init,
		state: state,
		setupLights: setupLights,
		setupLightsView: setupLightsView,

pushLight: pushLight,
		pushShadow: pushShadow
	};

}

function WebGLRenderStates( extensions, capabilities ) {

let renderStates = new WeakMap();

function get( scene, renderCallDepth = 0 ) {

const renderStateArray = renderStates.get( scene );
		let renderState;

if ( renderStateArray === undefined ) {

renderState = new WebGLRenderState( extensions, capabilities );
			renderStates.set( scene, [ renderState ] );

} else {

if ( renderCallDepth >= renderStateArray.length ) {

renderState = new WebGLRenderState( extensions, capabilities );
				renderStateArray.push( renderState );

} else {

renderState = renderStateArray[ renderCallDepth ];

}

return renderState;

}

function dispose() {

renderStates = new WeakMap();

}

return {
		get: get,
		dispose: dispose
	};

}

class MeshDepthMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshDepthMaterial = true;

this.type = 'MeshDepthMaterial';

this.depthPacking = BasicDepthPacking;

this.map = null;

this.alphaMap = null;

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.wireframe = false;
		this.wireframeLinewidth = 1;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.depthPacking = source.depthPacking;

this.map = source.map;

this.alphaMap = source.alphaMap;

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

return this;

}

class MeshDistanceMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshDistanceMaterial = true;

this.type = 'MeshDistanceMaterial';

this.map = null;

this.alphaMap = null;

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.map = source.map;

this.alphaMap = source.alphaMap;

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

return this;

}

const vertex = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";

const fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tconst float samples = float( VSM_SAMPLES );\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n\tfor ( float i = 0.0; i < samples; i ++ ) {\n\t\tfloat uvOffset = uvStart + i * uvStride;\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean / samples;\n\tsquared_mean = squared_mean / samples;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";

function WebGLShadowMap( _renderer, _objects, _capabilities ) {

let _frustum = new Frustum();

const _shadowMapSize = new Vector2(),
		_viewportSize = new Vector2(),

_viewport = new Vector4(),

_depthMaterial = new MeshDepthMaterial( { depthPacking: RGBADepthPacking } ),
		_distanceMaterial = new MeshDistanceMaterial(),

_materialCache = {},

_maxTextureSize = _capabilities.maxTextureSize;

const shadowSide = { [ FrontSide ]: BackSide, [ BackSide ]: FrontSide, [ DoubleSide ]: DoubleSide };

const shadowMaterialVertical = new ShaderMaterial( {
		defines: {
			VSM_SAMPLES: 8
		},
		uniforms: {
			shadow_pass: { value: null },
			resolution: { value: new Vector2() },
			radius: { value: 4.0 }
		},

vertexShader: vertex,
		fragmentShader: fragment

} );

const shadowMaterialHorizontal = shadowMaterialVertical.clone();
	shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;

const fullScreenTri = new BufferGeometry();
	fullScreenTri.setAttribute(
		'position',
		new BufferAttribute(
			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
			3
		)
	);

const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );

const scope = this;

this.enabled = false;

this.autoUpdate = true;
	this.needsUpdate = false;

this.type = PCFShadowMap;

this.render = function ( lights, scene, camera ) {

if ( scope.enabled === false ) return;
		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;

if ( lights.length === 0 ) return;

const currentRenderTarget = _renderer.getRenderTarget();
		const activeCubeFace = _renderer.getActiveCubeFace();
		const activeMipmapLevel = _renderer.getActiveMipmapLevel();

const _state = _renderer.state;

// Set GL state for depth map.
		_state.setBlending( NoBlending );
		_state.buffers.color.setClear( 1, 1, 1, 1 );
		_state.buffers.depth.setTest( true );
		_state.setScissorTest( false );

// render depth map

for ( let i = 0, il = lights.length; i < il; i ++ ) {

const light = lights[ i ];
			const shadow = light.shadow;

if ( shadow === undefined ) {

console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
				continue;

}

if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;

_shadowMapSize.copy( shadow.mapSize );

const shadowFrameExtents = shadow.getFrameExtents();

_shadowMapSize.multiply( shadowFrameExtents );

_viewportSize.copy( shadow.mapSize );

if ( _shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize ) {

if ( _shadowMapSize.x > _maxTextureSize ) {

_viewportSize.x = Math.floor( _maxTextureSize / shadowFrameExtents.x );
					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
					shadow.mapSize.x = _viewportSize.x;

}

if ( _shadowMapSize.y > _maxTextureSize ) {

_viewportSize.y = Math.floor( _maxTextureSize / shadowFrameExtents.y );
					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
					shadow.mapSize.y = _viewportSize.y;

}

if ( shadow.map === null ) {

const pars = ( this.type !== VSMShadowMap ) ? { minFilter: NearestFilter, magFilter: NearestFilter } : {};

shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
				shadow.map.texture.name = light.name + '.shadowMap';

shadow.camera.updateProjectionMatrix();

}

_renderer.setRenderTarget( shadow.map );
			_renderer.clear();

const viewportCount = shadow.getViewportCount();

for ( let vp = 0; vp < viewportCount; vp ++ ) {

const viewport = shadow.getViewport( vp );

_viewport.set(
					_viewportSize.x * viewport.x,
					_viewportSize.y * viewport.y,
					_viewportSize.x * viewport.z,
					_viewportSize.y * viewport.w
				);

_state.viewport( _viewport );

shadow.updateMatrices( light, vp );

_frustum = shadow.getFrustum();

renderObject( scene, camera, shadow.camera, light, this.type );

}

// do blur pass for VSM

if ( shadow.isPointLightShadow !== true && this.type === VSMShadowMap ) {

VSMPass( shadow, camera );

}

shadow.needsUpdate = false;

}

scope.needsUpdate = false;

_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );

};

function VSMPass( shadow, camera ) {

const geometry = _objects.update( fullScreenMesh );

if ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {

shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
			shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;

shadowMaterialVertical.needsUpdate = true;
			shadowMaterialHorizontal.needsUpdate = true;

}

if ( shadow.mapPass === null ) {

shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y );

}

// vertical pass

shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.mapPass );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );

// horizontal pass

shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
		shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
		shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
		_renderer.setRenderTarget( shadow.map );
		_renderer.clear();
		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );

}

function getDepthMaterial( object, material, light, type ) {

let result = null;

const customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;

if ( customMaterial !== undefined ) {

result = customMaterial;

} else {

result = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;

if ( ( _renderer.localClippingEnabled && material.clipShadows === true && Array.isArray( material.clippingPlanes ) && material.clippingPlanes.length !== 0 ) ||
				( material.displacementMap && material.displacementScale !== 0 ) ||
				( material.alphaMap && material.alphaTest > 0 ) ||
				( material.map && material.alphaTest > 0 ) ) {

// in this case we need a unique material instance reflecting the
				// appropriate state

const keyA = result.uuid, keyB = material.uuid;

let materialsForVariant = _materialCache[ keyA ];

if ( materialsForVariant === undefined ) {

materialsForVariant = {};
					_materialCache[ keyA ] = materialsForVariant;

}

let cachedMaterial = materialsForVariant[ keyB ];

if ( cachedMaterial === undefined ) {

cachedMaterial = result.clone();
					materialsForVariant[ keyB ] = cachedMaterial;

}

result = cachedMaterial;

}

result.visible = material.visible;
		result.wireframe = material.wireframe;

if ( type === VSMShadowMap ) {

result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;

} else {

result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];

}

result.alphaMap = material.alphaMap;
		result.alphaTest = material.alphaTest;
		result.map = material.map;

result.clipShadows = material.clipShadows;
		result.clippingPlanes = material.clippingPlanes;
		result.clipIntersection = material.clipIntersection;

result.displacementMap = material.displacementMap;
		result.displacementScale = material.displacementScale;
		result.displacementBias = material.displacementBias;

result.wireframeLinewidth = material.wireframeLinewidth;
		result.linewidth = material.linewidth;

if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {

const materialProperties = _renderer.properties.get( result );
			materialProperties.light = light;

}

return result;

}

function renderObject( object, camera, shadowCamera, light, type ) {

if ( object.visible === false ) return;

const visible = object.layers.test( camera.layers );

if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {

if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {

object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );

const geometry = _objects.update( object );
				const material = object.material;

if ( Array.isArray( material ) ) {

const groups = geometry.groups;

for ( let k = 0, kl = groups.length; k < kl; k ++ ) {

const group = groups[ k ];
						const groupMaterial = material[ group.materialIndex ];

if ( groupMaterial && groupMaterial.visible ) {

const depthMaterial = getDepthMaterial( object, groupMaterial, light, type );

_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );

}

} else if ( material.visible ) {

const depthMaterial = getDepthMaterial( object, material, light, type );

_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );

}

const children = object.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

renderObject( children[ i ], camera, shadowCamera, light, type );

}

function WebGLState( gl, extensions, capabilities ) {

const isWebGL2 = capabilities.isWebGL2;

function ColorBuffer() {

let locked = false;

const color = new Vector4();
		let currentColorMask = null;
		const currentColorClear = new Vector4( 0, 0, 0, 0 );

return {

setMask: function ( colorMask ) {

if ( currentColorMask !== colorMask && ! locked ) {

gl.colorMask( colorMask, colorMask, colorMask, colorMask );
					currentColorMask = colorMask;

}

setLocked: function ( lock ) {

locked = lock;

setClear: function ( r, g, b, a, premultipliedAlpha ) {

if ( premultipliedAlpha === true ) {

r *= a; g *= a; b *= a;

}

color.set( r, g, b, a );

if ( currentColorClear.equals( color ) === false ) {

gl.clearColor( r, g, b, a );
					currentColorClear.copy( color );

}

reset: function () {

locked = false;

currentColorMask = null;
				currentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state

}

};

}

function DepthBuffer() {

let locked = false;

let currentDepthMask = null;
		let currentDepthFunc = null;
		let currentDepthClear = null;

return {

setTest: function ( depthTest ) {

if ( depthTest ) {

enable( 2929 );

} else {

disable( 2929 );

}

setMask: function ( depthMask ) {

if ( currentDepthMask !== depthMask && ! locked ) {

gl.depthMask( depthMask );
					currentDepthMask = depthMask;

}

setFunc: function ( depthFunc ) {

if ( currentDepthFunc !== depthFunc ) {

switch ( depthFunc ) {

case NeverDepth:

gl.depthFunc( 512 );
							break;

case AlwaysDepth:

gl.depthFunc( 519 );
							break;

case LessDepth:

gl.depthFunc( 513 );
							break;

case LessEqualDepth:

gl.depthFunc( 515 );
							break;

case EqualDepth:

gl.depthFunc( 514 );
							break;

case GreaterEqualDepth:

gl.depthFunc( 518 );
							break;

case GreaterDepth:

gl.depthFunc( 516 );
							break;

case NotEqualDepth:

gl.depthFunc( 517 );
							break;

default:

gl.depthFunc( 515 );

}

currentDepthFunc = depthFunc;

}

setLocked: function ( lock ) {

locked = lock;

setClear: function ( depth ) {

if ( currentDepthClear !== depth ) {

gl.clearDepth( depth );
					currentDepthClear = depth;

}

reset: function () {

locked = false;

currentDepthMask = null;
				currentDepthFunc = null;
				currentDepthClear = null;

}

};

}

function StencilBuffer() {

let locked = false;

let currentStencilMask = null;
		let currentStencilFunc = null;
		let currentStencilRef = null;
		let currentStencilFuncMask = null;
		let currentStencilFail = null;
		let currentStencilZFail = null;
		let currentStencilZPass = null;
		let currentStencilClear = null;

return {

setTest: function ( stencilTest ) {

if ( ! locked ) {

if ( stencilTest ) {

enable( 2960 );

} else {

disable( 2960 );

}

setMask: function ( stencilMask ) {

if ( currentStencilMask !== stencilMask && ! locked ) {

gl.stencilMask( stencilMask );
					currentStencilMask = stencilMask;

}

setFunc: function ( stencilFunc, stencilRef, stencilMask ) {

if ( currentStencilFunc !== stencilFunc ||
				     currentStencilRef !== stencilRef ||
				     currentStencilFuncMask !== stencilMask ) {

gl.stencilFunc( stencilFunc, stencilRef, stencilMask );

currentStencilFunc = stencilFunc;
					currentStencilRef = stencilRef;
					currentStencilFuncMask = stencilMask;

}

setOp: function ( stencilFail, stencilZFail, stencilZPass ) {

if ( currentStencilFail !== stencilFail ||
				     currentStencilZFail !== stencilZFail ||
				     currentStencilZPass !== stencilZPass ) {

gl.stencilOp( stencilFail, stencilZFail, stencilZPass );

currentStencilFail = stencilFail;
					currentStencilZFail = stencilZFail;
					currentStencilZPass = stencilZPass;

}

setLocked: function ( lock ) {

locked = lock;

setClear: function ( stencil ) {

if ( currentStencilClear !== stencil ) {

gl.clearStencil( stencil );
					currentStencilClear = stencil;

}

reset: function () {

locked = false;

currentStencilMask = null;
				currentStencilFunc = null;
				currentStencilRef = null;
				currentStencilFuncMask = null;
				currentStencilFail = null;
				currentStencilZFail = null;
				currentStencilZPass = null;
				currentStencilClear = null;

}

};

}

const colorBuffer = new ColorBuffer();
	const depthBuffer = new DepthBuffer();
	const stencilBuffer = new StencilBuffer();

const uboBindings = new WeakMap();
	const uboProgramMap = new WeakMap();

let enabledCapabilities = {};

let currentBoundFramebuffers = {};
	let currentDrawbuffers = new WeakMap();
	let defaultDrawbuffers = [];

let currentProgram = null;

let currentBlendingEnabled = false;
	let currentBlending = null;
	let currentBlendEquation = null;
	let currentBlendSrc = null;
	let currentBlendDst = null;
	let currentBlendEquationAlpha = null;
	let currentBlendSrcAlpha = null;
	let currentBlendDstAlpha = null;
	let currentPremultipledAlpha = false;

let currentFlipSided = null;
	let currentCullFace = null;

let currentLineWidth = null;

let currentPolygonOffsetFactor = null;
	let currentPolygonOffsetUnits = null;

const maxTextures = gl.getParameter( 35661 );

let lineWidthAvailable = false;
	let version = 0;
	const glVersion = gl.getParameter( 7938 );

if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {

version = parseFloat( /^WebGL (\d)/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 1.0 );

} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {

version = parseFloat( /^OpenGL ES (\d)/.exec( glVersion )[ 1 ] );
		lineWidthAvailable = ( version >= 2.0 );

}

let currentTextureSlot = null;
	let currentBoundTextures = {};

const scissorParam = gl.getParameter( 3088 );
	const viewportParam = gl.getParameter( 2978 );

const currentScissor = new Vector4().fromArray( scissorParam );
	const currentViewport = new Vector4().fromArray( viewportParam );

function createTexture( type, target, count ) {

const data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.
		const texture = gl.createTexture();

gl.bindTexture( type, texture );
		gl.texParameteri( type, 10241, 9728 );
		gl.texParameteri( type, 10240, 9728 );

for ( let i = 0; i < count; i ++ ) {

gl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );

}

return texture;

}

const emptyTextures = {};
	emptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );
	emptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );

// init

colorBuffer.setClear( 0, 0, 0, 1 );
	depthBuffer.setClear( 1 );
	stencilBuffer.setClear( 0 );

enable( 2929 );
	depthBuffer.setFunc( LessEqualDepth );

setFlipSided( false );
	setCullFace( CullFaceBack );
	enable( 2884 );

setBlending( NoBlending );

function enable( id ) {

if ( enabledCapabilities[ id ] !== true ) {

gl.enable( id );
			enabledCapabilities[ id ] = true;

}

function disable( id ) {

if ( enabledCapabilities[ id ] !== false ) {

gl.disable( id );
			enabledCapabilities[ id ] = false;

}

function bindFramebuffer( target, framebuffer ) {

if ( currentBoundFramebuffers[ target ] !== framebuffer ) {

gl.bindFramebuffer( target, framebuffer );

currentBoundFramebuffers[ target ] = framebuffer;

if ( isWebGL2 ) {

// 36009 is equivalent to 36160

if ( target === 36009 ) {

currentBoundFramebuffers[ 36160 ] = framebuffer;

}

if ( target === 36160 ) {

currentBoundFramebuffers[ 36009 ] = framebuffer;

}

return true;

}

return false;

}

function drawBuffers( renderTarget, framebuffer ) {

let drawBuffers = defaultDrawbuffers;

let needsUpdate = false;

if ( renderTarget ) {

drawBuffers = currentDrawbuffers.get( framebuffer );

if ( drawBuffers === undefined ) {

drawBuffers = [];
				currentDrawbuffers.set( framebuffer, drawBuffers );

}

if ( renderTarget.isWebGLMultipleRenderTargets ) {

const textures = renderTarget.texture;

if ( drawBuffers.length !== textures.length || drawBuffers[ 0 ] !== 36064 ) {

for ( let i = 0, il = textures.length; i < il; i ++ ) {

drawBuffers[ i ] = 36064 + i;

}

drawBuffers.length = textures.length;

needsUpdate = true;

}

} else {

if ( drawBuffers[ 0 ] !== 36064 ) {

drawBuffers[ 0 ] = 36064;

needsUpdate = true;

}

} else {

if ( drawBuffers[ 0 ] !== 1029 ) {

drawBuffers[ 0 ] = 1029;

needsUpdate = true;

}

if ( needsUpdate ) {

if ( capabilities.isWebGL2 ) {

gl.drawBuffers( drawBuffers );

} else {

extensions.get( 'WEBGL_draw_buffers' ).drawBuffersWEBGL( drawBuffers );

}

function useProgram( program ) {

if ( currentProgram !== program ) {

gl.useProgram( program );

currentProgram = program;

return true;

}

return false;

}

const equationToGL = {
		[ AddEquation ]: 32774,
		[ SubtractEquation ]: 32778,
		[ ReverseSubtractEquation ]: 32779
	};

if ( isWebGL2 ) {

equationToGL[ MinEquation ] = 32775;
		equationToGL[ MaxEquation ] = 32776;

} else {

const extension = extensions.get( 'EXT_blend_minmax' );

if ( extension !== null ) {

equationToGL[ MinEquation ] = extension.MIN_EXT;
			equationToGL[ MaxEquation ] = extension.MAX_EXT;

}

const factorToGL = {
		[ ZeroFactor ]: 0,
		[ OneFactor ]: 1,
		[ SrcColorFactor ]: 768,
		[ SrcAlphaFactor ]: 770,
		[ SrcAlphaSaturateFactor ]: 776,
		[ DstColorFactor ]: 774,
		[ DstAlphaFactor ]: 772,
		[ OneMinusSrcColorFactor ]: 769,
		[ OneMinusSrcAlphaFactor ]: 771,
		[ OneMinusDstColorFactor ]: 775,
		[ OneMinusDstAlphaFactor ]: 773
	};

function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {

if ( blending === NoBlending ) {

if ( currentBlendingEnabled === true ) {

disable( 3042 );
				currentBlendingEnabled = false;

}

return;

}

if ( currentBlendingEnabled === false ) {

enable( 3042 );
			currentBlendingEnabled = true;

}

if ( blending !== CustomBlending ) {

if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {

if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {

gl.blendEquation( 32774 );

currentBlendEquation = AddEquation;
					currentBlendEquationAlpha = AddEquation;

}

if ( premultipliedAlpha ) {

switch ( blending ) {

case NormalBlending:
							gl.blendFuncSeparate( 1, 771, 1, 771 );
							break;

case AdditiveBlending:
							gl.blendFunc( 1, 1 );
							break;

case SubtractiveBlending:
							gl.blendFuncSeparate( 0, 769, 0, 1 );
							break;

case MultiplyBlending:
							gl.blendFuncSeparate( 0, 768, 0, 770 );
							break;

default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;

}

} else {

switch ( blending ) {

case NormalBlending:
							gl.blendFuncSeparate( 770, 771, 1, 771 );
							break;

case AdditiveBlending:
							gl.blendFunc( 770, 1 );
							break;

case SubtractiveBlending:
							gl.blendFuncSeparate( 0, 769, 0, 1 );
							break;

case MultiplyBlending:
							gl.blendFunc( 0, 768 );
							break;

default:
							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
							break;

}

currentBlendSrc = null;
				currentBlendDst = null;
				currentBlendSrcAlpha = null;
				currentBlendDstAlpha = null;

currentBlending = blending;
				currentPremultipledAlpha = premultipliedAlpha;

}

return;

}

// custom blending

blendEquationAlpha = blendEquationAlpha || blendEquation;
		blendSrcAlpha = blendSrcAlpha || blendSrc;
		blendDstAlpha = blendDstAlpha || blendDst;

if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {

gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );

currentBlendEquation = blendEquation;
			currentBlendEquationAlpha = blendEquationAlpha;

}

if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {

gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );

currentBlendSrc = blendSrc;
			currentBlendDst = blendDst;
			currentBlendSrcAlpha = blendSrcAlpha;
			currentBlendDstAlpha = blendDstAlpha;

}

currentBlending = blending;
		currentPremultipledAlpha = false;

}

function setMaterial( material, frontFaceCW ) {

material.side === DoubleSide
			? disable( 2884 )
			: enable( 2884 );

let flipSided = ( material.side === BackSide );
		if ( frontFaceCW ) flipSided = ! flipSided;

setFlipSided( flipSided );

( material.blending === NormalBlending && material.transparent === false )
			? setBlending( NoBlending )
			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );

depthBuffer.setFunc( material.depthFunc );
		depthBuffer.setTest( material.depthTest );
		depthBuffer.setMask( material.depthWrite );
		colorBuffer.setMask( material.colorWrite );

const stencilWrite = material.stencilWrite;
		stencilBuffer.setTest( stencilWrite );
		if ( stencilWrite ) {

stencilBuffer.setMask( material.stencilWriteMask );
			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );

}

setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );

material.alphaToCoverage === true
			? enable( 32926 )
			: disable( 32926 );

}

function setFlipSided( flipSided ) {

if ( currentFlipSided !== flipSided ) {

if ( flipSided ) {

gl.frontFace( 2304 );

} else {

gl.frontFace( 2305 );

}

currentFlipSided = flipSided;

}

function setCullFace( cullFace ) {

if ( cullFace !== CullFaceNone ) {

enable( 2884 );

if ( cullFace !== currentCullFace ) {

if ( cullFace === CullFaceBack ) {

gl.cullFace( 1029 );

} else if ( cullFace === CullFaceFront ) {

gl.cullFace( 1028 );

} else {

gl.cullFace( 1032 );

}

} else {

disable( 2884 );

}

currentCullFace = cullFace;

}

function setLineWidth( width ) {

if ( width !== currentLineWidth ) {

if ( lineWidthAvailable ) gl.lineWidth( width );

currentLineWidth = width;

}

function setPolygonOffset( polygonOffset, factor, units ) {

if ( polygonOffset ) {

enable( 32823 );

if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {

gl.polygonOffset( factor, units );

currentPolygonOffsetFactor = factor;
				currentPolygonOffsetUnits = units;

}

} else {

disable( 32823 );

}

function setScissorTest( scissorTest ) {

if ( scissorTest ) {

enable( 3089 );

} else {

disable( 3089 );

}

// texture

function activeTexture( webglSlot ) {

if ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;

if ( currentTextureSlot !== webglSlot ) {

gl.activeTexture( webglSlot );
			currentTextureSlot = webglSlot;

}

function bindTexture( webglType, webglTexture, webglSlot ) {

if ( webglSlot === undefined ) {

if ( currentTextureSlot === null ) {

webglSlot = 33984 + maxTextures - 1;

} else {

webglSlot = currentTextureSlot;

}

let boundTexture = currentBoundTextures[ webglSlot ];

if ( boundTexture === undefined ) {

boundTexture = { type: undefined, texture: undefined };
			currentBoundTextures[ webglSlot ] = boundTexture;

}

if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {

if ( currentTextureSlot !== webglSlot ) {

gl.activeTexture( webglSlot );
				currentTextureSlot = webglSlot;

}

gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );

boundTexture.type = webglType;
			boundTexture.texture = webglTexture;

}

function unbindTexture() {

const boundTexture = currentBoundTextures[ currentTextureSlot ];

if ( boundTexture !== undefined && boundTexture.type !== undefined ) {

gl.bindTexture( boundTexture.type, null );

boundTexture.type = undefined;
			boundTexture.texture = undefined;

}

function compressedTexImage2D() {

try {

gl.compressedTexImage2D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function compressedTexImage3D() {

try {

gl.compressedTexImage3D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texSubImage2D() {

try {

gl.texSubImage2D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texSubImage3D() {

try {

gl.texSubImage3D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function compressedTexSubImage2D() {

try {

gl.compressedTexSubImage2D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function compressedTexSubImage3D() {

try {

gl.compressedTexSubImage3D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texStorage2D() {

try {

gl.texStorage2D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texStorage3D() {

try {

gl.texStorage3D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texImage2D() {

try {

gl.texImage2D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function texImage3D() {

try {

gl.texImage3D.apply( gl, arguments );

} catch ( error ) {

console.error( 'THREE.WebGLState:', error );

}

function scissor( scissor ) {

if ( currentScissor.equals( scissor ) === false ) {

gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
			currentScissor.copy( scissor );

}

function viewport( viewport ) {

if ( currentViewport.equals( viewport ) === false ) {

gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
			currentViewport.copy( viewport );

}

function updateUBOMapping( uniformsGroup, program ) {

let mapping = uboProgramMap.get( program );

if ( mapping === undefined ) {

mapping = new WeakMap();

uboProgramMap.set( program, mapping );

}

let blockIndex = mapping.get( uniformsGroup );

if ( blockIndex === undefined ) {

blockIndex = gl.getUniformBlockIndex( program, uniformsGroup.name );

mapping.set( uniformsGroup, blockIndex );

}

function uniformBlockBinding( uniformsGroup, program ) {

const mapping = uboProgramMap.get( program );
		const blockIndex = mapping.get( uniformsGroup );

if ( uboBindings.get( program ) !== blockIndex ) {

// bind shader specific block index to global block point
			gl.uniformBlockBinding( program, blockIndex, uniformsGroup.__bindingPointIndex );

uboBindings.set( program, blockIndex );

}

function reset() {

// reset state

gl.disable( 3042 );
		gl.disable( 2884 );
		gl.disable( 2929 );
		gl.disable( 32823 );
		gl.disable( 3089 );
		gl.disable( 2960 );
		gl.disable( 32926 );

gl.blendEquation( 32774 );
		gl.blendFunc( 1, 0 );
		gl.blendFuncSeparate( 1, 0, 1, 0 );

gl.colorMask( true, true, true, true );
		gl.clearColor( 0, 0, 0, 0 );

gl.depthMask( true );
		gl.depthFunc( 513 );
		gl.clearDepth( 1 );

gl.stencilMask( 0xffffffff );
		gl.stencilFunc( 519, 0, 0xffffffff );
		gl.stencilOp( 7680, 7680, 7680 );
		gl.clearStencil( 0 );

gl.cullFace( 1029 );
		gl.frontFace( 2305 );

gl.polygonOffset( 0, 0 );

gl.activeTexture( 33984 );

gl.bindFramebuffer( 36160, null );

if ( isWebGL2 === true ) {

gl.bindFramebuffer( 36009, null );
			gl.bindFramebuffer( 36008, null );

}

gl.useProgram( null );

gl.lineWidth( 1 );

gl.scissor( 0, 0, gl.canvas.width, gl.canvas.height );
		gl.viewport( 0, 0, gl.canvas.width, gl.canvas.height );

// reset internals

enabledCapabilities = {};

currentTextureSlot = null;
		currentBoundTextures = {};

currentBoundFramebuffers = {};
		currentDrawbuffers = new WeakMap();
		defaultDrawbuffers = [];

currentProgram = null;

currentBlendingEnabled = false;
		currentBlending = null;
		currentBlendEquation = null;
		currentBlendSrc = null;
		currentBlendDst = null;
		currentBlendEquationAlpha = null;
		currentBlendSrcAlpha = null;
		currentBlendDstAlpha = null;
		currentPremultipledAlpha = false;

currentFlipSided = null;
		currentCullFace = null;

currentLineWidth = null;

currentPolygonOffsetFactor = null;
		currentPolygonOffsetUnits = null;

currentScissor.set( 0, 0, gl.canvas.width, gl.canvas.height );
		currentViewport.set( 0, 0, gl.canvas.width, gl.canvas.height );

colorBuffer.reset();
		depthBuffer.reset();
		stencilBuffer.reset();

}

return {

buffers: {
			color: colorBuffer,
			depth: depthBuffer,
			stencil: stencilBuffer
		},

enable: enable,
		disable: disable,

bindFramebuffer: bindFramebuffer,
		drawBuffers: drawBuffers,

useProgram: useProgram,

setBlending: setBlending,
		setMaterial: setMaterial,

setFlipSided: setFlipSided,
		setCullFace: setCullFace,

setLineWidth: setLineWidth,
		setPolygonOffset: setPolygonOffset,

setScissorTest: setScissorTest,

activeTexture: activeTexture,
		bindTexture: bindTexture,
		unbindTexture: unbindTexture,
		compressedTexImage2D: compressedTexImage2D,
		compressedTexImage3D: compressedTexImage3D,
		texImage2D: texImage2D,
		texImage3D: texImage3D,

updateUBOMapping: updateUBOMapping,
		uniformBlockBinding: uniformBlockBinding,

texStorage2D: texStorage2D,
		texStorage3D: texStorage3D,
		texSubImage2D: texSubImage2D,
		texSubImage3D: texSubImage3D,
		compressedTexSubImage2D: compressedTexSubImage2D,
		compressedTexSubImage3D: compressedTexSubImage3D,

scissor: scissor,
		viewport: viewport,

reset: reset

};

}

function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {

const isWebGL2 = capabilities.isWebGL2;
	const maxTextures = capabilities.maxTextures;
	const maxCubemapSize = capabilities.maxCubemapSize;
	const maxTextureSize = capabilities.maxTextureSize;
	const maxSamples = capabilities.maxSamples;
	const multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;
	const supportsInvalidateFramebuffer = typeof navigator === 'undefined' ? false : /OculusBrowser/g.test( navigator.userAgent );

const _videoTextures = new WeakMap();
	let _canvas;

const _sources = new WeakMap(); // maps WebglTexture objects to instances of Source

// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
	// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
	// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).

let useOffscreenCanvas = false;

try {

useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
			// eslint-disable-next-line compat/compat
			&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;

} catch ( err ) {

// Ignore any errors

}

function createCanvas( width, height ) {

// Use OffscreenCanvas when available. Specially needed in web workers

return useOffscreenCanvas ?
			// eslint-disable-next-line compat/compat
			new OffscreenCanvas( width, height ) : createElementNS( 'canvas' );

}

function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {

let scale = 1;

// handle case if texture exceeds max size

if ( image.width > maxSize || image.height > maxSize ) {

scale = maxSize / Math.max( image.width, image.height );

}

// only perform resize if necessary

if ( scale < 1 || needsPowerOfTwo === true ) {

// only perform resize for certain image types

if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {

const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;

const width = floor( scale * image.width );
				const height = floor( scale * image.height );

if ( _canvas === undefined ) _canvas = createCanvas( width, height );

// cube textures can't reuse the same canvas

const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;

canvas.width = width;
				canvas.height = height;

const context = canvas.getContext( '2d' );
				context.drawImage( image, 0, 0, width, height );

console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );

return canvas;

} else {

if ( 'data' in image ) {

console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );

}

return image;

}

return image;

}

function isPowerOfTwo$1( image ) {

return isPowerOfTwo( image.width ) && isPowerOfTwo( image.height );

}

function textureNeedsPowerOfTwo( texture ) {

if ( isWebGL2 ) return false;

return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
			( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );

}

function textureNeedsGenerateMipmaps( texture, supportsMips ) {

return texture.generateMipmaps && supportsMips &&
			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;

}

function generateMipmap( target ) {

_gl.generateMipmap( target );

}

function getInternalFormat( internalFormatName, glFormat, glType, encoding, forceLinearEncoding = false ) {

if ( isWebGL2 === false ) return glFormat;

if ( internalFormatName !== null ) {

if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];

console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );

}

let internalFormat = glFormat;

if ( glFormat === 6403 ) {

if ( glType === 5126 ) internalFormat = 33326;
			if ( glType === 5131 ) internalFormat = 33325;
			if ( glType === 5121 ) internalFormat = 33321;

}

if ( glFormat === 33319 ) {

if ( glType === 5126 ) internalFormat = 33328;
			if ( glType === 5131 ) internalFormat = 33327;
			if ( glType === 5121 ) internalFormat = 33323;

}

if ( glFormat === 6408 ) {

if ( glType === 5126 ) internalFormat = 34836;
			if ( glType === 5131 ) internalFormat = 34842;
			if ( glType === 5121 ) internalFormat = ( encoding === sRGBEncoding && forceLinearEncoding === false ) ? 35907 : 32856;
			if ( glType === 32819 ) internalFormat = 32854;
			if ( glType === 32820 ) internalFormat = 32855;

}

if ( internalFormat === 33325 || internalFormat === 33326 ||
			internalFormat === 33327 || internalFormat === 33328 ||
			internalFormat === 34842 || internalFormat === 34836 ) {

extensions.get( 'EXT_color_buffer_float' );

}

return internalFormat;

}

function getMipLevels( texture, image, supportsMips ) {

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) === true || ( texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) ) {

return Math.log2( Math.max( image.width, image.height ) ) + 1;

} else if ( texture.mipmaps !== undefined && texture.mipmaps.length > 0 ) {

// user-defined mipmaps

return texture.mipmaps.length;

} else if ( texture.isCompressedTexture && Array.isArray( texture.image ) ) {

return image.mipmaps.length;

} else {

// texture without mipmaps (only base level)

return 1;

}

// Fallback filters for non-power-of-2 textures

function filterFallback( f ) {

if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {

return 9728;

}

return 9729;

}

function onTextureDispose( event ) {

const texture = event.target;

texture.removeEventListener( 'dispose', onTextureDispose );

deallocateTexture( texture );

if ( texture.isVideoTexture ) {

_videoTextures.delete( texture );

}

function onRenderTargetDispose( event ) {

const renderTarget = event.target;

renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );

deallocateRenderTarget( renderTarget );

}

function deallocateTexture( texture ) {

const textureProperties = properties.get( texture );

if ( textureProperties.__webglInit === undefined ) return;

// check if it's necessary to remove the WebGLTexture object

const source = texture.source;
		const webglTextures = _sources.get( source );

if ( webglTextures ) {

const webglTexture = webglTextures[ textureProperties.__cacheKey ];
			webglTexture.usedTimes --;

// the WebGLTexture object is not used anymore, remove it

if ( webglTexture.usedTimes === 0 ) {

deleteTexture( texture );

}

// remove the weak map entry if no WebGLTexture uses the source anymore

if ( Object.keys( webglTextures ).length === 0 ) {

_sources.delete( source );

}

properties.remove( texture );

}

function deleteTexture( texture ) {

const textureProperties = properties.get( texture );
		_gl.deleteTexture( textureProperties.__webglTexture );

const source = texture.source;
		const webglTextures = _sources.get( source );
		delete webglTextures[ textureProperties.__cacheKey ];

info.memory.textures --;

}

function deallocateRenderTarget( renderTarget ) {

const texture = renderTarget.texture;

const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( texture );

if ( textureProperties.__webglTexture !== undefined ) {

_gl.deleteTexture( textureProperties.__webglTexture );

info.memory.textures --;

}

if ( renderTarget.depthTexture ) {

renderTarget.depthTexture.dispose();

}

if ( renderTarget.isWebGLCubeRenderTarget ) {

for ( let i = 0; i < 6; i ++ ) {

_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );

}

} else {

_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );

if ( renderTargetProperties.__webglColorRenderbuffer ) {

for ( let i = 0; i < renderTargetProperties.__webglColorRenderbuffer.length; i ++ ) {

if ( renderTargetProperties.__webglColorRenderbuffer[ i ] ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer[ i ] );

}

if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );

}

if ( renderTarget.isWebGLMultipleRenderTargets ) {

for ( let i = 0, il = texture.length; i < il; i ++ ) {

const attachmentProperties = properties.get( texture[ i ] );

if ( attachmentProperties.__webglTexture ) {

_gl.deleteTexture( attachmentProperties.__webglTexture );

info.memory.textures --;

}

properties.remove( texture[ i ] );

}

properties.remove( texture );
		properties.remove( renderTarget );

}

let textureUnits = 0;

function resetTextureUnits() {

textureUnits = 0;

}

function allocateTextureUnit() {

const textureUnit = textureUnits;

if ( textureUnit >= maxTextures ) {

console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );

}

textureUnits += 1;

return textureUnit;

}

function getTextureCacheKey( texture ) {

const array = [];

array.push( texture.wrapS );
		array.push( texture.wrapT );
		array.push( texture.wrapR || 0 );
		array.push( texture.magFilter );
		array.push( texture.minFilter );
		array.push( texture.anisotropy );
		array.push( texture.internalFormat );
		array.push( texture.format );
		array.push( texture.type );
		array.push( texture.generateMipmaps );
		array.push( texture.premultiplyAlpha );
		array.push( texture.flipY );
		array.push( texture.unpackAlignment );
		array.push( texture.encoding );

return array.join();

}

function setTexture2D( texture, slot ) {

const textureProperties = properties.get( texture );

if ( texture.isVideoTexture ) updateVideoTexture( texture );

if ( texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version ) {

const image = texture.image;

if ( image === null ) {

console.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );

} else if ( image.complete === false ) {

console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );

} else {

uploadTexture( textureProperties, texture, slot );
				return;

}

state.bindTexture( 3553, textureProperties.__webglTexture, 33984 + slot );

}

function setTexture2DArray( texture, slot ) {

const textureProperties = properties.get( texture );

if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

uploadTexture( textureProperties, texture, slot );
			return;

}

state.bindTexture( 35866, textureProperties.__webglTexture, 33984 + slot );

}

function setTexture3D( texture, slot ) {

const textureProperties = properties.get( texture );

if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

uploadTexture( textureProperties, texture, slot );
			return;

}

state.bindTexture( 32879, textureProperties.__webglTexture, 33984 + slot );

}

function setTextureCube( texture, slot ) {

const textureProperties = properties.get( texture );

if ( texture.version > 0 && textureProperties.__version !== texture.version ) {

uploadCubeTexture( textureProperties, texture, slot );
			return;

}

state.bindTexture( 34067, textureProperties.__webglTexture, 33984 + slot );

}

const wrappingToGL = {
		[ RepeatWrapping ]: 10497,
		[ ClampToEdgeWrapping ]: 33071,
		[ MirroredRepeatWrapping ]: 33648
	};

const filterToGL = {
		[ NearestFilter ]: 9728,
		[ NearestMipmapNearestFilter ]: 9984,
		[ NearestMipmapLinearFilter ]: 9986,

[ LinearFilter ]: 9729,
		[ LinearMipmapNearestFilter ]: 9985,
		[ LinearMipmapLinearFilter ]: 9987
	};

function setTextureParameters( textureType, texture, supportsMips ) {

if ( supportsMips ) {

_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );
			_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );

if ( textureType === 32879 || textureType === 35866 ) {

_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );

}

_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );
			_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );

} else {

_gl.texParameteri( textureType, 10242, 33071 );
			_gl.texParameteri( textureType, 10243, 33071 );

if ( textureType === 32879 || textureType === 35866 ) {

_gl.texParameteri( textureType, 32882, 33071 );

}

if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {

console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );

}

_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );
			_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );

if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {

console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );

}

if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

if ( texture.magFilter === NearestFilter ) return;
			if ( texture.minFilter !== NearestMipmapLinearFilter && texture.minFilter !== LinearMipmapLinearFilter ) return;
			if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension for WebGL 1 and WebGL 2
			if ( isWebGL2 === false && ( texture.type === HalfFloatType && extensions.has( 'OES_texture_half_float_linear' ) === false ) ) return; // verify extension for WebGL 1 only

if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {

_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
				properties.get( texture ).__currentAnisotropy = texture.anisotropy;

}

function initTexture( textureProperties, texture ) {

let forceUpload = false;

if ( textureProperties.__webglInit === undefined ) {

textureProperties.__webglInit = true;

texture.addEventListener( 'dispose', onTextureDispose );

}

// create Source <-> WebGLTextures mapping if necessary

const source = texture.source;
		let webglTextures = _sources.get( source );

if ( webglTextures === undefined ) {

webglTextures = {};
			_sources.set( source, webglTextures );

}

// check if there is already a WebGLTexture object for the given texture parameters

const textureCacheKey = getTextureCacheKey( texture );

if ( textureCacheKey !== textureProperties.__cacheKey ) {

// if not, create a new instance of WebGLTexture

if ( webglTextures[ textureCacheKey ] === undefined ) {

// create new entry

webglTextures[ textureCacheKey ] = {
					texture: _gl.createTexture(),
					usedTimes: 0
				};

info.memory.textures ++;

// when a new instance of WebGLTexture was created, a texture upload is required
				// even if the image contents are identical

forceUpload = true;

}

webglTextures[ textureCacheKey ].usedTimes ++;

// every time the texture cache key changes, it's necessary to check if an instance of
			// WebGLTexture can be deleted in order to avoid a memory leak.

const webglTexture = webglTextures[ textureProperties.__cacheKey ];

if ( webglTexture !== undefined ) {

webglTextures[ textureProperties.__cacheKey ].usedTimes --;

if ( webglTexture.usedTimes === 0 ) {

deleteTexture( texture );

}

// store references to cache key and WebGLTexture object

textureProperties.__cacheKey = textureCacheKey;
			textureProperties.__webglTexture = webglTextures[ textureCacheKey ].texture;

}

return forceUpload;

}

function uploadTexture( textureProperties, texture, slot ) {

let textureType = 3553;

if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) textureType = 35866;
		if ( texture.isData3DTexture ) textureType = 32879;

const forceUpload = initTexture( textureProperties, texture );
		const source = texture.source;

state.bindTexture( textureType, textureProperties.__webglTexture, 33984 + slot );

const sourceProperties = properties.get( source );

if ( source.version !== sourceProperties.__version || forceUpload === true ) {

state.activeTexture( 33984 + slot );

_gl.pixelStorei( 37440, texture.flipY );
			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
			_gl.pixelStorei( 3317, texture.unpackAlignment );
			_gl.pixelStorei( 37443, 0 );

const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo$1( texture.image ) === false;
			let image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );
			image = verifyColorSpace( texture, image );

const supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
				glFormat = utils.convert( texture.format, texture.encoding );

let glType = utils.convert( texture.type ),
				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding, texture.isVideoTexture );

setTextureParameters( textureType, texture, supportsMips );

let mipmap;
			const mipmaps = texture.mipmaps;

const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
			const levels = getMipLevels( texture, image, supportsMips );

if ( texture.isDepthTexture ) {

// populate depth texture with dummy data

glInternalFormat = 6402;

if ( isWebGL2 ) {

if ( texture.type === FloatType ) {

glInternalFormat = 36012;

} else if ( texture.type === UnsignedIntType ) {

glInternalFormat = 33190;

} else if ( texture.type === UnsignedInt248Type ) {

glInternalFormat = 35056;

} else {

glInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D

}

} else {

if ( texture.type === FloatType ) {

console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );

}

// validation checks for WebGL 1

if ( texture.format === DepthFormat && glInternalFormat === 6402 ) {

// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {

console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );

texture.type = UnsignedIntType;
						glType = utils.convert( texture.type );

}

if ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {

// Depth stencil textures need the DEPTH_STENCIL internal format
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					glInternalFormat = 34041;

// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
					if ( texture.type !== UnsignedInt248Type ) {

console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );

texture.type = UnsignedInt248Type;
						glType = utils.convert( texture.type );

}

if ( allocateMemory ) {

if ( useTexStorage ) {

state.texStorage2D( 3553, 1, glInternalFormat, image.width, image.height );

} else {

state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );

}

} else if ( texture.isDataTexture ) {

// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels

if ( mipmaps.length > 0 && supportsMips ) {

if ( useTexStorage && allocateMemory ) {

state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

}

for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

mipmap = mipmaps[ i ];

if ( useTexStorage ) {

state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

} else {

state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

}

texture.generateMipmaps = false;

} else {

if ( useTexStorage ) {

if ( allocateMemory ) {

state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

}

state.texSubImage2D( 3553, 0, 0, 0, image.width, image.height, glFormat, glType, image.data );

} else {

state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );

}

} else if ( texture.isCompressedTexture ) {

if ( texture.isCompressedArrayTexture ) {

if ( useTexStorage && allocateMemory ) {

state.texStorage3D( 35866, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height, image.depth );

}

for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

mipmap = mipmaps[ i ];

if ( texture.format !== RGBAFormat ) {

if ( glFormat !== null ) {

if ( useTexStorage ) {

state.compressedTexSubImage3D( 35866, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, mipmap.data, 0, 0 );

} else {

state.compressedTexImage3D( 35866, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, mipmap.data, 0, 0 );

}

} else {

console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );

}

} else {

if ( useTexStorage ) {

state.texSubImage3D( 35866, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, glType, mipmap.data );

} else {

state.texImage3D( 35866, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, glFormat, glType, mipmap.data );

}

} else {

if ( useTexStorage && allocateMemory ) {

state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

}

for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

mipmap = mipmaps[ i ];

if ( texture.format !== RGBAFormat ) {

if ( glFormat !== null ) {

if ( useTexStorage ) {

state.compressedTexSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

} else {

state.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

}

} else {

console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );

}

} else {

if ( useTexStorage ) {

state.texSubImage2D( 3553, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

} else {

state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

}

} else if ( texture.isDataArrayTexture ) {

if ( useTexStorage ) {

if ( allocateMemory ) {

state.texStorage3D( 35866, levels, glInternalFormat, image.width, image.height, image.depth );

}

state.texSubImage3D( 35866, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

} else {

state.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

}

} else if ( texture.isData3DTexture ) {

if ( useTexStorage ) {

if ( allocateMemory ) {

state.texStorage3D( 32879, levels, glInternalFormat, image.width, image.height, image.depth );

}

state.texSubImage3D( 32879, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );

} else {

state.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );

}

} else if ( texture.isFramebufferTexture ) {

if ( allocateMemory ) {

if ( useTexStorage ) {

state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

} else {

let width = image.width, height = image.height;

for ( let i = 0; i < levels; i ++ ) {

state.texImage2D( 3553, i, glInternalFormat, width, height, 0, glFormat, glType, null );

width >>= 1;
							height >>= 1;

}

} else {

// regular Texture (image, video, canvas)

// use manually created mipmaps if available
				// if there are no manual mipmaps
				// set 0 level mipmap and then use GL to generate other mipmap levels

if ( mipmaps.length > 0 && supportsMips ) {

if ( useTexStorage && allocateMemory ) {

state.texStorage2D( 3553, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );

}

for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {

mipmap = mipmaps[ i ];

if ( useTexStorage ) {

state.texSubImage2D( 3553, i, 0, 0, glFormat, glType, mipmap );

} else {

state.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );

}

texture.generateMipmaps = false;

} else {

if ( useTexStorage ) {

if ( allocateMemory ) {

state.texStorage2D( 3553, levels, glInternalFormat, image.width, image.height );

}

state.texSubImage2D( 3553, 0, 0, 0, glFormat, glType, image );

} else {

state.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );

}

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

generateMipmap( textureType );

}

sourceProperties.__version = source.version;

if ( texture.onUpdate ) texture.onUpdate( texture );

}

textureProperties.__version = texture.version;

}

function uploadCubeTexture( textureProperties, texture, slot ) {

if ( texture.image.length !== 6 ) return;

const forceUpload = initTexture( textureProperties, texture );
		const source = texture.source;

state.bindTexture( 34067, textureProperties.__webglTexture, 33984 + slot );

const sourceProperties = properties.get( source );

if ( source.version !== sourceProperties.__version || forceUpload === true ) {

state.activeTexture( 33984 + slot );

_gl.pixelStorei( 37440, texture.flipY );
			_gl.pixelStorei( 37441, texture.premultiplyAlpha );
			_gl.pixelStorei( 3317, texture.unpackAlignment );
			_gl.pixelStorei( 37443, 0 );

const isCompressed = ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture );
			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );

const cubeImage = [];

for ( let i = 0; i < 6; i ++ ) {

if ( ! isCompressed && ! isDataTexture ) {

cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );

} else {

cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];

}

cubeImage[ i ] = verifyColorSpace( texture, cubeImage[ i ] );

}

const image = cubeImage[ 0 ],
				supportsMips = isPowerOfTwo$1( image ) || isWebGL2,
				glFormat = utils.convert( texture.format, texture.encoding ),
				glType = utils.convert( texture.type ),
				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding );

const useTexStorage = ( isWebGL2 && texture.isVideoTexture !== true );
			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
			let levels = getMipLevels( texture, image, supportsMips );

setTextureParameters( 34067, texture, supportsMips );

let mipmaps;

if ( isCompressed ) {

if ( useTexStorage && allocateMemory ) {

state.texStorage2D( 34067, levels, glInternalFormat, image.width, image.height );

}

for ( let i = 0; i < 6; i ++ ) {

mipmaps = cubeImage[ i ].mipmaps;

for ( let j = 0; j < mipmaps.length; j ++ ) {

const mipmap = mipmaps[ j ];

if ( texture.format !== RGBAFormat ) {

if ( glFormat !== null ) {

if ( useTexStorage ) {

state.compressedTexSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );

} else {

state.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );

}

} else {

console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );

}

} else {

if ( useTexStorage ) {

state.texSubImage2D( 34069 + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );

} else {

state.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );

}

} else {

mipmaps = texture.mipmaps;

if ( useTexStorage && allocateMemory ) {

// TODO: Uniformly handle mipmap definitions
					// Normal textures and compressed cube textures define base level + mips with their mipmap array
					// Uncompressed cube textures use their mipmap array only for mips (no base level)

if ( mipmaps.length > 0 ) levels ++;

state.texStorage2D( 34067, levels, glInternalFormat, cubeImage[ 0 ].width, cubeImage[ 0 ].height );

}

for ( let i = 0; i < 6; i ++ ) {

if ( isDataTexture ) {

if ( useTexStorage ) {

state.texSubImage2D( 34069 + i, 0, 0, 0, cubeImage[ i ].width, cubeImage[ i ].height, glFormat, glType, cubeImage[ i ].data );

} else {

state.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );

}

for ( let j = 0; j < mipmaps.length; j ++ ) {

const mipmap = mipmaps[ j ];
							const mipmapImage = mipmap.image[ i ].image;

if ( useTexStorage ) {

state.texSubImage2D( 34069 + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data );

} else {

state.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );

}

} else {

if ( useTexStorage ) {

state.texSubImage2D( 34069 + i, 0, 0, 0, glFormat, glType, cubeImage[ i ] );

} else {

state.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );

}

for ( let j = 0; j < mipmaps.length; j ++ ) {

const mipmap = mipmaps[ j ];

if ( useTexStorage ) {

state.texSubImage2D( 34069 + i, j + 1, 0, 0, glFormat, glType, mipmap.image[ i ] );

} else {

state.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );

}

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

// We assume images for cube map have the same size.
				generateMipmap( 34067 );

}

sourceProperties.__version = source.version;

if ( texture.onUpdate ) texture.onUpdate( texture );

}

textureProperties.__version = texture.version;

}

// Render targets

// Setup storage for target texture and bind it to correct framebuffer
	function setupFrameBufferTexture( framebuffer, renderTarget, texture, attachment, textureTarget ) {

if ( ! renderTargetProperties.__hasExternalTextures ) {

if ( textureTarget === 32879 || textureTarget === 35866 ) {

state.texImage3D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null );

} else {

state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );

}

state.bindFramebuffer( 36160, framebuffer );

if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );

} else if ( textureTarget === 3553 || ( textureTarget >= 34069 && textureTarget <= 34074 ) ) { // see #24753

_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( texture ).__webglTexture, 0 );

}

state.bindFramebuffer( 36160, null );

}

// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {

_gl.bindRenderbuffer( 36161, renderbuffer );

if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {

let glInternalFormat = 33189;

if ( isMultisample || useMultisampledRTT( renderTarget ) ) {

const depthTexture = renderTarget.depthTexture;

if ( depthTexture && depthTexture.isDepthTexture ) {

if ( depthTexture.type === FloatType ) {

glInternalFormat = 36012;

} else if ( depthTexture.type === UnsignedIntType ) {

glInternalFormat = 33190;

}

const samples = getRenderTargetSamples( renderTarget );

if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

} else {

_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

}

} else {

_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

}

_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );

} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {

const samples = getRenderTargetSamples( renderTarget );

if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );

} else if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, 35056, renderTarget.width, renderTarget.height );

} else {

_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );

}

_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );

} else {

const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ];

for ( let i = 0; i < textures.length; i ++ ) {

const texture = textures[ i ];

if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {

_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

} else if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.renderbufferStorageMultisampleEXT( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

} else {

_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );

}

_gl.bindRenderbuffer( 36161, null );

}

// Setup resources for a Depth Texture for a FBO (needs an extension)
	function setupDepthTexture( framebuffer, renderTarget ) {

const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );

state.bindFramebuffer( 36160, framebuffer );

if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {

throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );

}

// upload an empty depth texture with framebuffer size
		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
				renderTarget.depthTexture.image.width !== renderTarget.width ||
				renderTarget.depthTexture.image.height !== renderTarget.height ) {

renderTarget.depthTexture.image.width = renderTarget.width;
			renderTarget.depthTexture.image.height = renderTarget.height;
			renderTarget.depthTexture.needsUpdate = true;

}

setTexture2D( renderTarget.depthTexture, 0 );

const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
		const samples = getRenderTargetSamples( renderTarget );

if ( renderTarget.depthTexture.format === DepthFormat ) {

if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 36096, 3553, webglDepthTexture, 0, samples );

} else {

_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );

}

} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {

if ( useMultisampledRTT( renderTarget ) ) {

multisampledRTTExt.framebufferTexture2DMultisampleEXT( 36160, 33306, 3553, webglDepthTexture, 0, samples );

} else {

_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );

}

} else {

throw new Error( 'Unknown depthTexture format' );

}

// Setup GL resources for a non-texture depth buffer
	function setupDepthRenderbuffer( renderTarget ) {

const renderTargetProperties = properties.get( renderTarget );
		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );

if ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) {

if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );

setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );

} else {

if ( isCube ) {

renderTargetProperties.__webglDepthbuffer = [];

for ( let i = 0; i < 6; i ++ ) {

state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );
					renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );

}

} else {

state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
				renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
				setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );

}

state.bindFramebuffer( 36160, null );

}

// rebind framebuffer with external textures
	function rebindTextures( renderTarget, colorTexture, depthTexture ) {

const renderTargetProperties = properties.get( renderTarget );

if ( colorTexture !== undefined ) {

setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, 36064, 3553 );

}

if ( depthTexture !== undefined ) {

setupDepthRenderbuffer( renderTarget );

}

// Set up GL resources for the render target
	function setupRenderTarget( renderTarget ) {

const texture = renderTarget.texture;

const renderTargetProperties = properties.get( renderTarget );
		const textureProperties = properties.get( texture );

renderTarget.addEventListener( 'dispose', onRenderTargetDispose );

if ( renderTarget.isWebGLMultipleRenderTargets !== true ) {

if ( textureProperties.__webglTexture === undefined ) {

textureProperties.__webglTexture = _gl.createTexture();

}

textureProperties.__version = texture.version;
			info.memory.textures ++;

}

const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
		const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true );
		const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

// Setup framebuffer

if ( isCube ) {

renderTargetProperties.__webglFramebuffer = [];

for ( let i = 0; i < 6; i ++ ) {

renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();

}

} else {

renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();

if ( isMultipleRenderTargets ) {

if ( capabilities.drawBuffers ) {

const textures = renderTarget.texture;

for ( let i = 0, il = textures.length; i < il; i ++ ) {

const attachmentProperties = properties.get( textures[ i ] );

if ( attachmentProperties.__webglTexture === undefined ) {

attachmentProperties.__webglTexture = _gl.createTexture();

info.memory.textures ++;

}

} else {

console.warn( 'THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.' );

}

if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

const textures = isMultipleRenderTargets ? texture : [ texture ];

renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
				renderTargetProperties.__webglColorRenderbuffer = [];

state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );

for ( let i = 0; i < textures.length; i ++ ) {

const texture = textures[ i ];
					renderTargetProperties.__webglColorRenderbuffer[ i ] = _gl.createRenderbuffer();

_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

const glFormat = utils.convert( texture.format, texture.encoding );
					const glType = utils.convert( texture.type );
					const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.encoding, renderTarget.isXRRenderTarget === true );
					const samples = getRenderTargetSamples( renderTarget );
					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );

_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

}

_gl.bindRenderbuffer( 36161, null );

if ( renderTarget.depthBuffer ) {

renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
					setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );

}

state.bindFramebuffer( 36160, null );

}

// Setup color buffer

if ( isCube ) {

state.bindTexture( 34067, textureProperties.__webglTexture );
			setTextureParameters( 34067, texture, supportsMips );

for ( let i = 0; i < 6; i ++ ) {

setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, 36064, 34069 + i );

}

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

generateMipmap( 34067 );

}

state.unbindTexture();

} else if ( isMultipleRenderTargets ) {

const textures = renderTarget.texture;

for ( let i = 0, il = textures.length; i < il; i ++ ) {

const attachment = textures[ i ];
				const attachmentProperties = properties.get( attachment );

state.bindTexture( 3553, attachmentProperties.__webglTexture );
				setTextureParameters( 3553, attachment, supportsMips );
				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, 36064 + i, 3553 );

if ( textureNeedsGenerateMipmaps( attachment, supportsMips ) ) {

generateMipmap( 3553 );

}

state.unbindTexture();

} else {

let glTextureType = 3553;

if ( renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {

if ( isWebGL2 ) {

glTextureType = renderTarget.isWebGL3DRenderTarget ? 32879 : 35866;

} else {

console.error( 'THREE.WebGLTextures: THREE.Data3DTexture and THREE.DataArrayTexture only supported with WebGL2.' );

}

state.bindTexture( glTextureType, textureProperties.__webglTexture );
			setTextureParameters( glTextureType, texture, supportsMips );
			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, 36064, glTextureType );

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

generateMipmap( glTextureType );

}

state.unbindTexture();

}

// Setup depth and stencil buffers

if ( renderTarget.depthBuffer ) {

setupDepthRenderbuffer( renderTarget );

}

function updateRenderTargetMipmap( renderTarget ) {

const supportsMips = isPowerOfTwo$1( renderTarget ) || isWebGL2;

const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ];

for ( let i = 0, il = textures.length; i < il; i ++ ) {

const texture = textures[ i ];

if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {

const target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
				const webglTexture = properties.get( texture ).__webglTexture;

state.bindTexture( target, webglTexture );
				generateMipmap( target );
				state.unbindTexture();

}

function updateMultisampleRenderTarget( renderTarget ) {

if ( ( isWebGL2 && renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {

const textures = renderTarget.isWebGLMultipleRenderTargets ? renderTarget.texture : [ renderTarget.texture ];
			const width = renderTarget.width;
			const height = renderTarget.height;
			let mask = 16384;
			const invalidationArray = [];
			const depthStyle = renderTarget.stencilBuffer ? 33306 : 36096;
			const renderTargetProperties = properties.get( renderTarget );
			const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true );

// If MRT we need to remove FBO attachments
			if ( isMultipleRenderTargets ) {

for ( let i = 0; i < textures.length; i ++ ) {

state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
					_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, null );

state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
					_gl.framebufferTexture2D( 36009, 36064 + i, 3553, null, 0 );

}

state.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
			state.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );

for ( let i = 0; i < textures.length; i ++ ) {

invalidationArray.push( 36064 + i );

if ( renderTarget.depthBuffer ) {

invalidationArray.push( depthStyle );

}

const ignoreDepthValues = ( renderTargetProperties.__ignoreDepthValues !== undefined ) ? renderTargetProperties.__ignoreDepthValues : false;

if ( ignoreDepthValues === false ) {

if ( renderTarget.depthBuffer ) mask |= 256;
					if ( renderTarget.stencilBuffer ) mask |= 1024;

}

if ( isMultipleRenderTargets ) {

_gl.framebufferRenderbuffer( 36008, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

}

if ( ignoreDepthValues === true ) {

_gl.invalidateFramebuffer( 36008, [ depthStyle ] );
					_gl.invalidateFramebuffer( 36009, [ depthStyle ] );

}

if ( isMultipleRenderTargets ) {

const webglTexture = properties.get( textures[ i ] ).__webglTexture;
					_gl.framebufferTexture2D( 36009, 36064, 3553, webglTexture, 0 );

}

_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );

if ( supportsInvalidateFramebuffer ) {

_gl.invalidateFramebuffer( 36008, invalidationArray );

}

state.bindFramebuffer( 36008, null );
			state.bindFramebuffer( 36009, null );

// If MRT since pre-blit we removed the FBO we need to reconstruct the attachments
			if ( isMultipleRenderTargets ) {

for ( let i = 0; i < textures.length; i ++ ) {

state.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
					_gl.framebufferRenderbuffer( 36160, 36064 + i, 36161, renderTargetProperties.__webglColorRenderbuffer[ i ] );

const webglTexture = properties.get( textures[ i ] ).__webglTexture;

state.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
					_gl.framebufferTexture2D( 36009, 36064 + i, 3553, webglTexture, 0 );

}

state.bindFramebuffer( 36009, renderTargetProperties.__webglMultisampledFramebuffer );

}

function getRenderTargetSamples( renderTarget ) {

return Math.min( maxSamples, renderTarget.samples );

}

function useMultisampledRTT( renderTarget ) {

const renderTargetProperties = properties.get( renderTarget );

return isWebGL2 && renderTarget.samples > 0 && extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTargetProperties.__useRenderToTexture !== false;

}

function updateVideoTexture( texture ) {

const frame = info.render.frame;

// Check the last frame we updated the VideoTexture

if ( _videoTextures.get( texture ) !== frame ) {

_videoTextures.set( texture, frame );
			texture.update();

}

function verifyColorSpace( texture, image ) {

const encoding = texture.encoding;
		const format = texture.format;
		const type = texture.type;

if ( texture.isCompressedTexture === true || texture.isVideoTexture === true || texture.format === _SRGBAFormat ) return image;

if ( encoding !== LinearEncoding ) {

// sRGB

if ( encoding === sRGBEncoding ) {

if ( isWebGL2 === false ) {

// in WebGL 1, try to use EXT_sRGB extension and unsized formats

if ( extensions.has( 'EXT_sRGB' ) === true && format === RGBAFormat ) {

texture.format = _SRGBAFormat;

// it's not possible to generate mips in WebGL 1 with this extension

texture.minFilter = LinearFilter;
						texture.generateMipmaps = false;

} else {

// slow fallback (CPU decode)

image = ImageUtils.sRGBToLinear( image );

}

} else {

// in WebGL 2 uncompressed textures can only be sRGB encoded if they have the RGBA8 format

if ( format !== RGBAFormat || type !== UnsignedByteType ) {

console.warn( 'THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.' );

}

} else {

console.error( 'THREE.WebGLTextures: Unsupported texture encoding:', encoding );

}

return image;

}

this.allocateTextureUnit = allocateTextureUnit;
	this.resetTextureUnits = resetTextureUnits;

this.setTexture2D = setTexture2D;
	this.setTexture2DArray = setTexture2DArray;
	this.setTexture3D = setTexture3D;
	this.setTextureCube = setTextureCube;
	this.rebindTextures = rebindTextures;
	this.setupRenderTarget = setupRenderTarget;
	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
	this.setupDepthRenderbuffer = setupDepthRenderbuffer;
	this.setupFrameBufferTexture = setupFrameBufferTexture;
	this.useMultisampledRTT = useMultisampledRTT;

}

function WebGLUtils( gl, extensions, capabilities ) {

const isWebGL2 = capabilities.isWebGL2;

function convert( p, encoding = null ) {

let extension;

if ( p === UnsignedByteType ) return 5121;
		if ( p === UnsignedShort4444Type ) return 32819;
		if ( p === UnsignedShort5551Type ) return 32820;

if ( p === ByteType ) return 5120;
		if ( p === ShortType ) return 5122;
		if ( p === UnsignedShortType ) return 5123;
		if ( p === IntType ) return 5124;
		if ( p === UnsignedIntType ) return 5125;
		if ( p === FloatType ) return 5126;

if ( p === HalfFloatType ) {

if ( isWebGL2 ) return 5131;

extension = extensions.get( 'OES_texture_half_float' );

if ( extension !== null ) {

return extension.HALF_FLOAT_OES;

} else {

return null;

}

if ( p === AlphaFormat ) return 6406;
		if ( p === RGBAFormat ) return 6408;
		if ( p === LuminanceFormat ) return 6409;
		if ( p === LuminanceAlphaFormat ) return 6410;
		if ( p === DepthFormat ) return 6402;
		if ( p === DepthStencilFormat ) return 34041;

// WebGL 1 sRGB fallback

if ( p === _SRGBAFormat ) {

extension = extensions.get( 'EXT_sRGB' );

if ( extension !== null ) {

return extension.SRGB_ALPHA_EXT;

} else {

return null;

}

// WebGL2 formats.

if ( p === RedFormat ) return 6403;
		if ( p === RedIntegerFormat ) return 36244;
		if ( p === RGFormat ) return 33319;
		if ( p === RGIntegerFormat ) return 33320;
		if ( p === RGBAIntegerFormat ) return 36249;

// S3TC

if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {

if ( encoding === sRGBEncoding ) {

extension = extensions.get( 'WEBGL_compressed_texture_s3tc_srgb' );

if ( extension !== null ) {

if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;

} else {

return null;

}

} else {

extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );

if ( extension !== null ) {

if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;

} else {

return null;

}

// PVRTC

if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {

extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );

if ( extension !== null ) {

if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;

} else {

return null;

}

// ETC1

if ( p === RGB_ETC1_Format ) {

extension = extensions.get( 'WEBGL_compressed_texture_etc1' );

if ( extension !== null ) {

return extension.COMPRESSED_RGB_ETC1_WEBGL;

} else {

return null;

}

// ETC2

if ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {

extension = extensions.get( 'WEBGL_compressed_texture_etc' );

if ( extension !== null ) {

if ( p === RGB_ETC2_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
				if ( p === RGBA_ETC2_EAC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;

} else {

return null;

}

// ASTC

if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {

extension = extensions.get( 'WEBGL_compressed_texture_astc' );

if ( extension !== null ) {

if ( p === RGBA_ASTC_4x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
				if ( p === RGBA_ASTC_5x4_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
				if ( p === RGBA_ASTC_5x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
				if ( p === RGBA_ASTC_6x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
				if ( p === RGBA_ASTC_6x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
				if ( p === RGBA_ASTC_8x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
				if ( p === RGBA_ASTC_8x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
				if ( p === RGBA_ASTC_8x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
				if ( p === RGBA_ASTC_10x5_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
				if ( p === RGBA_ASTC_10x6_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
				if ( p === RGBA_ASTC_10x8_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
				if ( p === RGBA_ASTC_10x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
				if ( p === RGBA_ASTC_12x10_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
				if ( p === RGBA_ASTC_12x12_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;

} else {

return null;

}

// BPTC

if ( p === RGBA_BPTC_Format ) {

extension = extensions.get( 'EXT_texture_compression_bptc' );

if ( extension !== null ) {

if ( p === RGBA_BPTC_Format ) return ( encoding === sRGBEncoding ) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;

} else {

return null;

}

// RGTC

if ( p === RED_RGTC1_Format || p === SIGNED_RED_RGTC1_Format || p === RED_GREEN_RGTC2_Format || p === SIGNED_RED_GREEN_RGTC2_Format ) {

extension = extensions.get( 'EXT_texture_compression_rgtc' );

if ( extension !== null ) {

if ( p === RGBA_BPTC_Format ) return extension.COMPRESSED_RED_RGTC1_EXT;
				if ( p === SIGNED_RED_RGTC1_Format ) return extension.COMPRESSED_SIGNED_RED_RGTC1_EXT;
				if ( p === RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_RED_GREEN_RGTC2_EXT;
				if ( p === SIGNED_RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT;

} else {

return null;

}

if ( p === UnsignedInt248Type ) {

if ( isWebGL2 ) return 34042;

extension = extensions.get( 'WEBGL_depth_texture' );

if ( extension !== null ) {

return extension.UNSIGNED_INT_24_8_WEBGL;

} else {

return null;

}

// if "p" can't be resolved, assume the user defines a WebGL constant as a string (fallback/workaround for packed RGB formats)

return ( gl[ p ] !== undefined ) ? gl[ p ] : null;

}

return { convert: convert };

}

class ArrayCamera extends PerspectiveCamera {

constructor( array = [] ) {

super();

this.isArrayCamera = true;

this.cameras = array;

}

class Group extends Object3D {

constructor() {

super();

this.isGroup = true;

this.type = 'Group';

}

const _moveEvent = { type: 'move' };

class WebXRController {

constructor() {

this._targetRay = null;
		this._grip = null;
		this._hand = null;

}

getHandSpace() {

if ( this._hand === null ) {

this._hand = new Group();
			this._hand.matrixAutoUpdate = false;
			this._hand.visible = false;

this._hand.joints = {};
			this._hand.inputState = { pinching: false };

}

return this._hand;

}

getTargetRaySpace() {

if ( this._targetRay === null ) {

this._targetRay = new Group();
			this._targetRay.matrixAutoUpdate = false;
			this._targetRay.visible = false;
			this._targetRay.hasLinearVelocity = false;
			this._targetRay.linearVelocity = new Vector3();
			this._targetRay.hasAngularVelocity = false;
			this._targetRay.angularVelocity = new Vector3();

}

return this._targetRay;

}

getGripSpace() {

if ( this._grip === null ) {

this._grip = new Group();
			this._grip.matrixAutoUpdate = false;
			this._grip.visible = false;
			this._grip.hasLinearVelocity = false;
			this._grip.linearVelocity = new Vector3();
			this._grip.hasAngularVelocity = false;
			this._grip.angularVelocity = new Vector3();

}

return this._grip;

}

dispatchEvent( event ) {

if ( this._targetRay !== null ) {

this._targetRay.dispatchEvent( event );

}

if ( this._grip !== null ) {

this._grip.dispatchEvent( event );

}

if ( this._hand !== null ) {

this._hand.dispatchEvent( event );

}

return this;

}

connect( inputSource ) {

if ( inputSource && inputSource.hand ) {

const hand = this._hand;

if ( hand ) {

for ( const inputjoint of inputSource.hand.values() ) {

// Initialize hand with joints when connected
					this._getHandJoint( hand, inputjoint );

}

this.dispatchEvent( { type: 'connected', data: inputSource } );

return this;

}

disconnect( inputSource ) {

this.dispatchEvent( { type: 'disconnected', data: inputSource } );

if ( this._targetRay !== null ) {

this._targetRay.visible = false;

}

if ( this._grip !== null ) {

this._grip.visible = false;

}

if ( this._hand !== null ) {

this._hand.visible = false;

}

return this;

}

update( inputSource, frame, referenceSpace ) {

let inputPose = null;
		let gripPose = null;
		let handPose = null;

const targetRay = this._targetRay;
		const grip = this._grip;
		const hand = this._hand;

if ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {

if ( hand && inputSource.hand ) {

handPose = true;

for ( const inputjoint of inputSource.hand.values() ) {

// Update the joints groups with the XRJoint poses
					const jointPose = frame.getJointPose( inputjoint, referenceSpace );

// The transform of this joint will be updated with the joint pose on each frame
					const joint = this._getHandJoint( hand, inputjoint );

if ( jointPose !== null ) {

joint.matrix.fromArray( jointPose.transform.matrix );
						joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
						joint.jointRadius = jointPose.radius;

}

joint.visible = jointPose !== null;

}

// Custom events

// Check pinchz
				const indexTip = hand.joints[ 'index-finger-tip' ];
				const thumbTip = hand.joints[ 'thumb-tip' ];
				const distance = indexTip.position.distanceTo( thumbTip.position );

const distanceToPinch = 0.02;
				const threshold = 0.005;

if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {

hand.inputState.pinching = false;
					this.dispatchEvent( {
						type: 'pinchend',
						handedness: inputSource.handedness,
						target: this
					} );

} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {

hand.inputState.pinching = true;
					this.dispatchEvent( {
						type: 'pinchstart',
						handedness: inputSource.handedness,
						target: this
					} );

}

} else {

if ( grip !== null && inputSource.gripSpace ) {

gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );

if ( gripPose !== null ) {

grip.matrix.fromArray( gripPose.transform.matrix );
						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );

if ( gripPose.linearVelocity ) {

grip.hasLinearVelocity = true;
							grip.linearVelocity.copy( gripPose.linearVelocity );

} else {

grip.hasLinearVelocity = false;

}

if ( gripPose.angularVelocity ) {

grip.hasAngularVelocity = true;
							grip.angularVelocity.copy( gripPose.angularVelocity );

} else {

grip.hasAngularVelocity = false;

}

if ( targetRay !== null ) {

inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );

// Some runtimes (namely Vive Cosmos with Vive OpenXR Runtime) have only grip space and ray space is equal to it
				if ( inputPose === null && gripPose !== null ) {

inputPose = gripPose;

}

if ( inputPose !== null ) {

targetRay.matrix.fromArray( inputPose.transform.matrix );
					targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );

if ( inputPose.linearVelocity ) {

targetRay.hasLinearVelocity = true;
						targetRay.linearVelocity.copy( inputPose.linearVelocity );

} else {

targetRay.hasLinearVelocity = false;

}

if ( inputPose.angularVelocity ) {

targetRay.hasAngularVelocity = true;
						targetRay.angularVelocity.copy( inputPose.angularVelocity );

} else {

targetRay.hasAngularVelocity = false;

}

this.dispatchEvent( _moveEvent );

}

if ( targetRay !== null ) {

targetRay.visible = ( inputPose !== null );

}

if ( grip !== null ) {

grip.visible = ( gripPose !== null );

}

if ( hand !== null ) {

hand.visible = ( handPose !== null );

}

return this;

}

// private method

_getHandJoint( hand, inputjoint ) {

if ( hand.joints[ inputjoint.jointName ] === undefined ) {

const joint = new Group();
			joint.matrixAutoUpdate = false;
			joint.visible = false;
			hand.joints[ inputjoint.jointName ] = joint;

hand.add( joint );

}

return hand.joints[ inputjoint.jointName ];

}

class DepthTexture extends Texture {

constructor( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {

format = format !== undefined ? format : DepthFormat;

if ( format !== DepthFormat && format !== DepthStencilFormat ) {

throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );

}

if ( type === undefined && format === DepthFormat ) type = UnsignedIntType;
		if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;

super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

this.isDepthTexture = true;

this.image = { width: width, height: height };

this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;

this.flipY = false;
		this.generateMipmaps = false;

}

class WebXRManager extends EventDispatcher {

constructor( renderer, gl ) {

super();

const scope = this;

let session = null;
		let framebufferScaleFactor = 1.0;

let referenceSpace = null;
		let referenceSpaceType = 'local-floor';
		// Set default foveation to maximum.
		let foveation = 1.0;
		let customReferenceSpace = null;

let pose = null;
		let glBinding = null;
		let glProjLayer = null;
		let glBaseLayer = null;
		let xrFrame = null;
		const attributes = gl.getContextAttributes();
		let initialRenderTarget = null;
		let newRenderTarget = null;

const controllers = [];
		const controllerInputSources = [];

const planes = new Set();
		const planesLastChangedTimes = new Map();

const cameraL = new PerspectiveCamera();
		cameraL.layers.enable( 1 );
		cameraL.viewport = new Vector4();

const cameraR = new PerspectiveCamera();
		cameraR.layers.enable( 2 );
		cameraR.viewport = new Vector4();

const cameras = [ cameraL, cameraR ];

const cameraVR = new ArrayCamera();
		cameraVR.layers.enable( 1 );
		cameraVR.layers.enable( 2 );

let _currentDepthNear = null;
		let _currentDepthFar = null;

this.cameraAutoUpdate = true;
		this.enabled = false;

this.isPresenting = false;

this.getController = function ( index ) {

let controller = controllers[ index ];

if ( controller === undefined ) {

controller = new WebXRController();
				controllers[ index ] = controller;

}

return controller.getTargetRaySpace();

};

this.getControllerGrip = function ( index ) {

let controller = controllers[ index ];

if ( controller === undefined ) {

controller = new WebXRController();
				controllers[ index ] = controller;

}

return controller.getGripSpace();

};

this.getHand = function ( index ) {

let controller = controllers[ index ];

if ( controller === undefined ) {

controller = new WebXRController();
				controllers[ index ] = controller;

}

return controller.getHandSpace();

};

function onSessionEvent( event ) {

const controllerIndex = controllerInputSources.indexOf( event.inputSource );

if ( controllerIndex === - 1 ) {

return;

}

const controller = controllers[ controllerIndex ];

if ( controller !== undefined ) {

controller.dispatchEvent( { type: event.type, data: event.inputSource } );

}

function onSessionEnd() {

session.removeEventListener( 'select', onSessionEvent );
			session.removeEventListener( 'selectstart', onSessionEvent );
			session.removeEventListener( 'selectend', onSessionEvent );
			session.removeEventListener( 'squeeze', onSessionEvent );
			session.removeEventListener( 'squeezestart', onSessionEvent );
			session.removeEventListener( 'squeezeend', onSessionEvent );
			session.removeEventListener( 'end', onSessionEnd );
			session.removeEventListener( 'inputsourceschange', onInputSourcesChange );

for ( let i = 0; i < controllers.length; i ++ ) {

const inputSource = controllerInputSources[ i ];

if ( inputSource === null ) continue;

controllerInputSources[ i ] = null;

controllers[ i ].disconnect( inputSource );

}

_currentDepthNear = null;
			_currentDepthFar = null;

// restore framebuffer/rendering state

renderer.setRenderTarget( initialRenderTarget );

glBaseLayer = null;
			glProjLayer = null;
			glBinding = null;
			session = null;
			newRenderTarget = null;

animation.stop();

scope.isPresenting = false;

scope.dispatchEvent( { type: 'sessionend' } );

}

this.setFramebufferScaleFactor = function ( value ) {

framebufferScaleFactor = value;

if ( scope.isPresenting === true ) {

console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );

}

};

this.setReferenceSpaceType = function ( value ) {

referenceSpaceType = value;

if ( scope.isPresenting === true ) {

console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );

}

};

this.getReferenceSpace = function () {

return customReferenceSpace || referenceSpace;

};

this.setReferenceSpace = function ( space ) {

customReferenceSpace = space;

};

this.getBaseLayer = function () {

return glProjLayer !== null ? glProjLayer : glBaseLayer;

};

this.getBinding = function () {

return glBinding;

};

this.getFrame = function () {

return xrFrame;

};

this.getSession = function () {

return session;

};

this.setSession = async function ( value ) {

session = value;

if ( session !== null ) {

initialRenderTarget = renderer.getRenderTarget();

session.addEventListener( 'select', onSessionEvent );
				session.addEventListener( 'selectstart', onSessionEvent );
				session.addEventListener( 'selectend', onSessionEvent );
				session.addEventListener( 'squeeze', onSessionEvent );
				session.addEventListener( 'squeezestart', onSessionEvent );
				session.addEventListener( 'squeezeend', onSessionEvent );
				session.addEventListener( 'end', onSessionEnd );
				session.addEventListener( 'inputsourceschange', onInputSourcesChange );

if ( attributes.xrCompatible !== true ) {

await gl.makeXRCompatible();

}

if ( ( session.renderState.layers === undefined ) || ( renderer.capabilities.isWebGL2 === false ) ) {

const layerInit = {
						antialias: ( session.renderState.layers === undefined ) ? attributes.antialias : true,
						alpha: attributes.alpha,
						depth: attributes.depth,
						stencil: attributes.stencil,
						framebufferScaleFactor: framebufferScaleFactor
					};

glBaseLayer = new XRWebGLLayer( session, gl, layerInit );

session.updateRenderState( { baseLayer: glBaseLayer } );

newRenderTarget = new WebGLRenderTarget(
						glBaseLayer.framebufferWidth,
						glBaseLayer.framebufferHeight,
						{
							format: RGBAFormat,
							type: UnsignedByteType,
							encoding: renderer.outputEncoding,
							stencilBuffer: attributes.stencil
						}
					);

} else {

let depthFormat = null;
					let depthType = null;
					let glDepthFormat = null;

if ( attributes.depth ) {

glDepthFormat = attributes.stencil ? 35056 : 33190;
						depthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;
						depthType = attributes.stencil ? UnsignedInt248Type : UnsignedIntType;

}

const projectionlayerInit = {
						colorFormat: 32856,
						depthFormat: glDepthFormat,
						scaleFactor: framebufferScaleFactor
					};

glBinding = new XRWebGLBinding( session, gl );

glProjLayer = glBinding.createProjectionLayer( projectionlayerInit );

session.updateRenderState( { layers: [ glProjLayer ] } );

newRenderTarget = new WebGLRenderTarget(
						glProjLayer.textureWidth,
						glProjLayer.textureHeight,
						{
							format: RGBAFormat,
							type: UnsignedByteType,
							depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
							stencilBuffer: attributes.stencil,
							encoding: renderer.outputEncoding,
							samples: attributes.antialias ? 4 : 0
						} );

const renderTargetProperties = renderer.properties.get( newRenderTarget );
					renderTargetProperties.__ignoreDepthValues = glProjLayer.ignoreDepthValues;

}

newRenderTarget.isXRRenderTarget = true; // TODO Remove this when possible, see #23278

this.setFoveation( foveation );

customReferenceSpace = null;
				referenceSpace = await session.requestReferenceSpace( referenceSpaceType );

animation.setContext( session );
				animation.start();

scope.isPresenting = true;

scope.dispatchEvent( { type: 'sessionstart' } );

}

};

function onInputSourcesChange( event ) {

// Notify disconnected

for ( let i = 0; i < event.removed.length; i ++ ) {

const inputSource = event.removed[ i ];
				const index = controllerInputSources.indexOf( inputSource );

if ( index >= 0 ) {

controllerInputSources[ index ] = null;
					controllers[ index ].disconnect( inputSource );

}

// Notify connected

for ( let i = 0; i < event.added.length; i ++ ) {

const inputSource = event.added[ i ];

let controllerIndex = controllerInputSources.indexOf( inputSource );

if ( controllerIndex === - 1 ) {

// Assign input source a controller that currently has no input source

for ( let i = 0; i < controllers.length; i ++ ) {

if ( i >= controllerInputSources.length ) {

controllerInputSources.push( inputSource );
							controllerIndex = i;
							break;

} else if ( controllerInputSources[ i ] === null ) {

controllerInputSources[ i ] = inputSource;
							controllerIndex = i;
							break;

}

// If all controllers do currently receive input we ignore new ones

if ( controllerIndex === - 1 ) break;

}

const controller = controllers[ controllerIndex ];

if ( controller ) {

controller.connect( inputSource );

}

const cameraLPos = new Vector3();
		const cameraRPos = new Vector3();

/**
		 * Assumes 2 cameras that are parallel and share an X-axis, and that
		 * the cameras' projection and world matrices have already been set.
		 * And that near and far planes are identical for both cameras.
		 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
		 */
		function setProjectionFromUnion( camera, cameraL, cameraR ) {

cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
			cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );

const ipd = cameraLPos.distanceTo( cameraRPos );

const projL = cameraL.projectionMatrix.elements;
			const projR = cameraR.projectionMatrix.elements;

// VR systems will have identical far and near planes, and
			// most likely identical top and bottom frustum extents.
			// Use the left camera for these values.
			const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
			const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
			const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
			const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];

const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
			const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
			const left = near * leftFov;
			const right = near * rightFov;

// Calculate the new camera's position offset from the
			// left camera. xOffset should be roughly half `ipd`.
			const zOffset = ipd / ( - leftFov + rightFov );
			const xOffset = zOffset * - leftFov;

// TODO: Better way to apply this offset?
			cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
			camera.translateX( xOffset );
			camera.translateZ( zOffset );
			camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

// Find the union of the frustum values of the cameras and scale
			// the values so that the near plane's position does not change in world space,
			// although must now be relative to the new union camera.
			const near2 = near + zOffset;
			const far2 = far + zOffset;
			const left2 = left - xOffset;
			const right2 = right + ( ipd - xOffset );
			const top2 = topFov * far / far2 * near2;
			const bottom2 = bottomFov * far / far2 * near2;

camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );
			camera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();

}

function updateCamera( camera, parent ) {

if ( parent === null ) {

camera.matrixWorld.copy( camera.matrix );

} else {

camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );

}

camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();

}

this.updateCamera = function ( camera ) {

if ( session === null ) return;

cameraVR.near = cameraR.near = cameraL.near = camera.near;
			cameraVR.far = cameraR.far = cameraL.far = camera.far;

if ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {

// Note that the new renderState won't apply until the next frame. See #18320

session.updateRenderState( {
					depthNear: cameraVR.near,
					depthFar: cameraVR.far
				} );

_currentDepthNear = cameraVR.near;
				_currentDepthFar = cameraVR.far;

}

const parent = camera.parent;
			const cameras = cameraVR.cameras;

updateCamera( cameraVR, parent );

for ( let i = 0; i < cameras.length; i ++ ) {

updateCamera( cameras[ i ], parent );

}

// update projection matrix for proper view frustum culling

if ( cameras.length === 2 ) {

setProjectionFromUnion( cameraVR, cameraL, cameraR );

} else {

// assume single camera setup (AR)

cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );

}

// update user camera and its children

updateUserCamera( camera, cameraVR, parent );

};

function updateUserCamera( camera, cameraVR, parent ) {

if ( parent === null ) {

camera.matrix.copy( cameraVR.matrixWorld );

} else {

camera.matrix.copy( parent.matrixWorld );
				camera.matrix.invert();
				camera.matrix.multiply( cameraVR.matrixWorld );

}

camera.matrix.decompose( camera.position, camera.quaternion, camera.scale );
			camera.updateMatrixWorld( true );

const children = camera.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

children[ i ].updateMatrixWorld( true );

}

camera.projectionMatrix.copy( cameraVR.projectionMatrix );
			camera.projectionMatrixInverse.copy( cameraVR.projectionMatrixInverse );

if ( camera.isPerspectiveCamera ) {

camera.fov = RAD2DEG * 2 * Math.atan( 1 / camera.projectionMatrix.elements[ 5 ] );
				camera.zoom = 1;

}

this.getCamera = function () {

return cameraVR;

};

this.getFoveation = function () {

if ( glProjLayer === null && glBaseLayer === null ) {

return undefined;

}

return foveation;

};

this.setFoveation = function ( value ) {

// 0 = no foveation = full resolution
			// 1 = maximum foveation = the edges render at lower resolution

foveation = value;

if ( glProjLayer !== null ) {

glProjLayer.fixedFoveation = value;

}

if ( glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined ) {

glBaseLayer.fixedFoveation = value;

}

};

this.getPlanes = function () {

return planes;

};

// Animation Loop

let onAnimationFrameCallback = null;

function onAnimationFrame( time, frame ) {

pose = frame.getViewerPose( customReferenceSpace || referenceSpace );
			xrFrame = frame;

if ( pose !== null ) {

const views = pose.views;

if ( glBaseLayer !== null ) {

renderer.setRenderTargetFramebuffer( newRenderTarget, glBaseLayer.framebuffer );
					renderer.setRenderTarget( newRenderTarget );

}

let cameraVRNeedsUpdate = false;

// check if it's necessary to rebuild cameraVR's camera list

if ( views.length !== cameraVR.cameras.length ) {

cameraVR.cameras.length = 0;
					cameraVRNeedsUpdate = true;

}

for ( let i = 0; i < views.length; i ++ ) {

const view = views[ i ];

let viewport = null;

if ( glBaseLayer !== null ) {

viewport = glBaseLayer.getViewport( view );

} else {

const glSubImage = glBinding.getViewSubImage( glProjLayer, view );
						viewport = glSubImage.viewport;

// For side-by-side projection, we only produce a single texture for both eyes.
						if ( i === 0 ) {

renderer.setRenderTargetTextures(
								newRenderTarget,
								glSubImage.colorTexture,
								glProjLayer.ignoreDepthValues ? undefined : glSubImage.depthStencilTexture );

renderer.setRenderTarget( newRenderTarget );

}

let camera = cameras[ i ];

if ( camera === undefined ) {

camera = new PerspectiveCamera();
						camera.layers.enable( i );
						camera.viewport = new Vector4();
						cameras[ i ] = camera;

}

camera.matrix.fromArray( view.transform.matrix );
					camera.matrix.decompose( camera.position, camera.quaternion, camera.scale );
					camera.projectionMatrix.fromArray( view.projectionMatrix );
					camera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();
					camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );

if ( i === 0 ) {

cameraVR.matrix.copy( camera.matrix );
						cameraVR.matrix.decompose( cameraVR.position, cameraVR.quaternion, cameraVR.scale );

}

if ( cameraVRNeedsUpdate === true ) {

cameraVR.cameras.push( camera );

}

for ( let i = 0; i < controllers.length; i ++ ) {

const inputSource = controllerInputSources[ i ];
				const controller = controllers[ i ];

if ( inputSource !== null && controller !== undefined ) {

controller.update( inputSource, frame, customReferenceSpace || referenceSpace );

}

if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );

if ( frame.detectedPlanes ) {

scope.dispatchEvent( { type: 'planesdetected', data: frame.detectedPlanes } );

let planesToRemove = null;

for ( const plane of planes ) {

if ( ! frame.detectedPlanes.has( plane ) ) {

if ( planesToRemove === null ) {

planesToRemove = [];

}

planesToRemove.push( plane );

}

if ( planesToRemove !== null ) {

for ( const plane of planesToRemove ) {

planes.delete( plane );
						planesLastChangedTimes.delete( plane );
						scope.dispatchEvent( { type: 'planeremoved', data: plane } );

}

for ( const plane of frame.detectedPlanes ) {

if ( ! planes.has( plane ) ) {

planes.add( plane );
						planesLastChangedTimes.set( plane, frame.lastChangedTime );
						scope.dispatchEvent( { type: 'planeadded', data: plane } );

} else {

const lastKnownTime = planesLastChangedTimes.get( plane );

if ( plane.lastChangedTime > lastKnownTime ) {

planesLastChangedTimes.set( plane, plane.lastChangedTime );
							scope.dispatchEvent( { type: 'planechanged', data: plane } );

}

xrFrame = null;

}

const animation = new WebGLAnimation();

animation.setAnimationLoop( onAnimationFrame );

this.setAnimationLoop = function ( callback ) {

onAnimationFrameCallback = callback;

};

this.dispose = function () {};

}

function WebGLMaterials( renderer, properties ) {

function refreshTransformUniform( map, uniform ) {

if ( map.matrixAutoUpdate === true ) {

map.updateMatrix();

}

uniform.value.copy( map.matrix );

}

function refreshFogUniforms( uniforms, fog ) {

fog.color.getRGB( uniforms.fogColor.value, getUnlitUniformColorSpace( renderer ) );

if ( fog.isFog ) {

uniforms.fogNear.value = fog.near;
			uniforms.fogFar.value = fog.far;

} else if ( fog.isFogExp2 ) {

uniforms.fogDensity.value = fog.density;

}

function refreshMaterialUniforms( uniforms, material, pixelRatio, height, transmissionRenderTarget ) {

if ( material.isMeshBasicMaterial ) {

refreshUniformsCommon( uniforms, material );

} else if ( material.isMeshLambertMaterial ) {

refreshUniformsCommon( uniforms, material );

} else if ( material.isMeshToonMaterial ) {

refreshUniformsCommon( uniforms, material );
			refreshUniformsToon( uniforms, material );

} else if ( material.isMeshPhongMaterial ) {

refreshUniformsCommon( uniforms, material );
			refreshUniformsPhong( uniforms, material );

} else if ( material.isMeshStandardMaterial ) {

refreshUniformsCommon( uniforms, material );
			refreshUniformsStandard( uniforms, material );

if ( material.isMeshPhysicalMaterial ) {

refreshUniformsPhysical( uniforms, material, transmissionRenderTarget );

}

} else if ( material.isMeshMatcapMaterial ) {

refreshUniformsCommon( uniforms, material );
			refreshUniformsMatcap( uniforms, material );

} else if ( material.isMeshDepthMaterial ) {

refreshUniformsCommon( uniforms, material );

} else if ( material.isMeshDistanceMaterial ) {

refreshUniformsCommon( uniforms, material );
			refreshUniformsDistance( uniforms, material );

} else if ( material.isMeshNormalMaterial ) {

refreshUniformsCommon( uniforms, material );

} else if ( material.isLineBasicMaterial ) {

refreshUniformsLine( uniforms, material );

if ( material.isLineDashedMaterial ) {

refreshUniformsDash( uniforms, material );

}

} else if ( material.isPointsMaterial ) {

refreshUniformsPoints( uniforms, material, pixelRatio, height );

} else if ( material.isSpriteMaterial ) {

refreshUniformsSprites( uniforms, material );

} else if ( material.isShadowMaterial ) {

uniforms.color.value.copy( material.color );
			uniforms.opacity.value = material.opacity;

} else if ( material.isShaderMaterial ) {

material.uniformsNeedUpdate = false; // #15581

}

function refreshUniformsCommon( uniforms, material ) {

uniforms.opacity.value = material.opacity;

if ( material.color ) {

uniforms.diffuse.value.copy( material.color );

}

if ( material.emissive ) {

uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );

}

if ( material.map ) {

uniforms.map.value = material.map;

refreshTransformUniform( material.map, uniforms.mapTransform );

}

if ( material.alphaMap ) {

uniforms.alphaMap.value = material.alphaMap;

refreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );

}

if ( material.bumpMap ) {

uniforms.bumpMap.value = material.bumpMap;

refreshTransformUniform( material.bumpMap, uniforms.bumpMapTransform );

uniforms.bumpScale.value = material.bumpScale;

if ( material.side === BackSide ) {

uniforms.bumpScale.value *= - 1;

}

if ( material.normalMap ) {

uniforms.normalMap.value = material.normalMap;

refreshTransformUniform( material.normalMap, uniforms.normalMapTransform );

uniforms.normalScale.value.copy( material.normalScale );

if ( material.side === BackSide ) {

uniforms.normalScale.value.negate();

}

if ( material.displacementMap ) {

uniforms.displacementMap.value = material.displacementMap;

refreshTransformUniform( material.displacementMap, uniforms.displacementMapTransform );

uniforms.displacementScale.value = material.displacementScale;
			uniforms.displacementBias.value = material.displacementBias;

}

if ( material.emissiveMap ) {

uniforms.emissiveMap.value = material.emissiveMap;

refreshTransformUniform( material.emissiveMap, uniforms.emissiveMapTransform );

}

if ( material.specularMap ) {

uniforms.specularMap.value = material.specularMap;

refreshTransformUniform( material.specularMap, uniforms.specularMapTransform );

}

if ( material.alphaTest > 0 ) {

uniforms.alphaTest.value = material.alphaTest;

}

const envMap = properties.get( material ).envMap;

if ( envMap ) {

uniforms.envMap.value = envMap;

uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;

uniforms.reflectivity.value = material.reflectivity;
			uniforms.ior.value = material.ior;
			uniforms.refractionRatio.value = material.refractionRatio;

}

if ( material.lightMap ) {

uniforms.lightMap.value = material.lightMap;

// artist-friendly light intensity scaling factor
			const scaleFactor = ( renderer.useLegacyLights === true ) ? Math.PI : 1;

uniforms.lightMapIntensity.value = material.lightMapIntensity * scaleFactor;

refreshTransformUniform( material.lightMap, uniforms.lightMapTransform );

}

if ( material.aoMap ) {

uniforms.aoMap.value = material.aoMap;
			uniforms.aoMapIntensity.value = material.aoMapIntensity;

refreshTransformUniform( material.aoMap, uniforms.aoMapTransform );

}

function refreshUniformsLine( uniforms, material ) {

uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;

if ( material.map ) {

uniforms.map.value = material.map;

refreshTransformUniform( material.map, uniforms.mapTransform );

}

function refreshUniformsDash( uniforms, material ) {

uniforms.dashSize.value = material.dashSize;
		uniforms.totalSize.value = material.dashSize + material.gapSize;
		uniforms.scale.value = material.scale;

}

function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {

uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.size.value = material.size * pixelRatio;
		uniforms.scale.value = height * 0.5;

if ( material.map ) {

uniforms.map.value = material.map;

refreshTransformUniform( material.map, uniforms.uvTransform );

}

if ( material.alphaMap ) {

uniforms.alphaMap.value = material.alphaMap;

}

if ( material.alphaTest > 0 ) {

uniforms.alphaTest.value = material.alphaTest;

}

function refreshUniformsSprites( uniforms, material ) {

uniforms.diffuse.value.copy( material.color );
		uniforms.opacity.value = material.opacity;
		uniforms.rotation.value = material.rotation;

if ( material.map ) {

uniforms.map.value = material.map;

refreshTransformUniform( material.map, uniforms.mapTransform );

}

if ( material.alphaMap ) {

uniforms.alphaMap.value = material.alphaMap;

}

if ( material.alphaTest > 0 ) {

uniforms.alphaTest.value = material.alphaTest;

}

function refreshUniformsPhong( uniforms, material ) {

uniforms.specular.value.copy( material.specular );
		uniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )

}

function refreshUniformsToon( uniforms, material ) {

if ( material.gradientMap ) {

uniforms.gradientMap.value = material.gradientMap;

}

function refreshUniformsStandard( uniforms, material ) {

uniforms.metalness.value = material.metalness;

if ( material.metalnessMap ) {

uniforms.metalnessMap.value = material.metalnessMap;

refreshTransformUniform( material.metalnessMap, uniforms.metalnessMapTransform );

}

uniforms.roughness.value = material.roughness;

if ( material.roughnessMap ) {

uniforms.roughnessMap.value = material.roughnessMap;

refreshTransformUniform( material.roughnessMap, uniforms.roughnessMapTransform );

}

const envMap = properties.get( material ).envMap;

if ( envMap ) {

//uniforms.envMap.value = material.envMap; // part of uniforms common
			uniforms.envMapIntensity.value = material.envMapIntensity;

}

function refreshUniformsPhysical( uniforms, material, transmissionRenderTarget ) {

uniforms.ior.value = material.ior; // also part of uniforms common

if ( material.sheen > 0 ) {

uniforms.sheenColor.value.copy( material.sheenColor ).multiplyScalar( material.sheen );

uniforms.sheenRoughness.value = material.sheenRoughness;

if ( material.sheenColorMap ) {

uniforms.sheenColorMap.value = material.sheenColorMap;

refreshTransformUniform( material.sheenColorMap, uniforms.sheenColorMapTransform );

}

if ( material.sheenRoughnessMap ) {

uniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;

refreshTransformUniform( material.sheenRoughnessMap, uniforms.sheenRoughnessMapTransform );

}

if ( material.clearcoat > 0 ) {

uniforms.clearcoat.value = material.clearcoat;
			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;

if ( material.clearcoatMap ) {

uniforms.clearcoatMap.value = material.clearcoatMap;

refreshTransformUniform( material.clearcoatMap, uniforms.clearcoatMapTransform );

}

if ( material.clearcoatRoughnessMap ) {

uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;

refreshTransformUniform( material.clearcoatRoughnessMap, uniforms.clearcoatRoughnessMapTransform );

}

if ( material.clearcoatNormalMap ) {

uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;

refreshTransformUniform( material.clearcoatNormalMap, uniforms.clearcoatNormalMapTransform );

uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );

if ( material.side === BackSide ) {

uniforms.clearcoatNormalScale.value.negate();

}

if ( material.iridescence > 0 ) {

uniforms.iridescence.value = material.iridescence;
			uniforms.iridescenceIOR.value = material.iridescenceIOR;
			uniforms.iridescenceThicknessMinimum.value = material.iridescenceThicknessRange[ 0 ];
			uniforms.iridescenceThicknessMaximum.value = material.iridescenceThicknessRange[ 1 ];

if ( material.iridescenceMap ) {

uniforms.iridescenceMap.value = material.iridescenceMap;

refreshTransformUniform( material.iridescenceMap, uniforms.iridescenceMapTransform );

}

if ( material.iridescenceThicknessMap ) {

uniforms.iridescenceThicknessMap.value = material.iridescenceThicknessMap;

refreshTransformUniform( material.iridescenceThicknessMap, uniforms.iridescenceThicknessMapTransform );

}

if ( material.transmission > 0 ) {

uniforms.transmission.value = material.transmission;
			uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
			uniforms.transmissionSamplerSize.value.set( transmissionRenderTarget.width, transmissionRenderTarget.height );

if ( material.transmissionMap ) {

uniforms.transmissionMap.value = material.transmissionMap;

refreshTransformUniform( material.transmissionMap, uniforms.transmissionMapTransform );

}

uniforms.thickness.value = material.thickness;

if ( material.thicknessMap ) {

uniforms.thicknessMap.value = material.thicknessMap;

refreshTransformUniform( material.thicknessMap, uniforms.thicknessMapTransform );

}

uniforms.attenuationDistance.value = material.attenuationDistance;
			uniforms.attenuationColor.value.copy( material.attenuationColor );

}

uniforms.specularIntensity.value = material.specularIntensity;
		uniforms.specularColor.value.copy( material.specularColor );

if ( material.specularColorMap ) {

uniforms.specularColorMap.value = material.specularColorMap;

refreshTransformUniform( material.specularColorMap, uniforms.specularColorMapTransform );

}

if ( material.specularIntensityMap ) {

uniforms.specularIntensityMap.value = material.specularIntensityMap;

refreshTransformUniform( material.specularIntensityMap, uniforms.specularIntensityMapTransform );

}

function refreshUniformsMatcap( uniforms, material ) {

if ( material.matcap ) {

uniforms.matcap.value = material.matcap;

}

function refreshUniformsDistance( uniforms, material ) {

const light = properties.get( material ).light;

uniforms.referencePosition.value.setFromMatrixPosition( light.matrixWorld );
		uniforms.nearDistance.value = light.shadow.camera.near;
		uniforms.farDistance.value = light.shadow.camera.far;

}

return {
		refreshFogUniforms: refreshFogUniforms,
		refreshMaterialUniforms: refreshMaterialUniforms
	};

}

function WebGLUniformsGroups( gl, info, capabilities, state ) {

let buffers = {};
	let updateList = {};
	let allocatedBindingPoints = [];

const maxBindingPoints = ( capabilities.isWebGL2 ) ? gl.getParameter( 35375 ) : 0; // binding points are global whereas block indices are per shader program

function bind( uniformsGroup, program ) {

const webglProgram = program.program;
		state.uniformBlockBinding( uniformsGroup, webglProgram );

}

function update( uniformsGroup, program ) {

let buffer = buffers[ uniformsGroup.id ];

if ( buffer === undefined ) {

prepareUniformsGroup( uniformsGroup );

buffer = createBuffer( uniformsGroup );
			buffers[ uniformsGroup.id ] = buffer;

uniformsGroup.addEventListener( 'dispose', onUniformsGroupsDispose );

}

// ensure to update the binding points/block indices mapping for this program

const webglProgram = program.program;
		state.updateUBOMapping( uniformsGroup, webglProgram );

// update UBO once per frame

const frame = info.render.frame;

if ( updateList[ uniformsGroup.id ] !== frame ) {

updateBufferData( uniformsGroup );

updateList[ uniformsGroup.id ] = frame;

}

function createBuffer( uniformsGroup ) {

// the setup of an UBO is independent of a particular shader program but global

const bindingPointIndex = allocateBindingPointIndex();
		uniformsGroup.__bindingPointIndex = bindingPointIndex;

const buffer = gl.createBuffer();
		const size = uniformsGroup.__size;
		const usage = uniformsGroup.usage;

gl.bindBuffer( 35345, buffer );
		gl.bufferData( 35345, size, usage );
		gl.bindBuffer( 35345, null );
		gl.bindBufferBase( 35345, bindingPointIndex, buffer );

return buffer;

}

function allocateBindingPointIndex() {

for ( let i = 0; i < maxBindingPoints; i ++ ) {

if ( allocatedBindingPoints.indexOf( i ) === - 1 ) {

allocatedBindingPoints.push( i );
				return i;

}

console.error( 'THREE.WebGLRenderer: Maximum number of simultaneously usable uniforms groups reached.' );

return 0;

}

function updateBufferData( uniformsGroup ) {

const buffer = buffers[ uniformsGroup.id ];
		const uniforms = uniformsGroup.uniforms;
		const cache = uniformsGroup.__cache;

gl.bindBuffer( 35345, buffer );

for ( let i = 0, il = uniforms.length; i < il; i ++ ) {

const uniform = uniforms[ i ];

// partly update the buffer if necessary

if ( hasUniformChanged( uniform, i, cache ) === true ) {

const offset = uniform.__offset;

const values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];

let arrayOffset = 0;

for ( let i = 0; i < values.length; i ++ ) {

const value = values[ i ];

const info = getUniformSize( value );

if ( typeof value === 'number' ) {

uniform.__data[ 0 ] = value;
						gl.bufferSubData( 35345, offset + arrayOffset, uniform.__data );

} else if ( value.isMatrix3 ) {

// manually converting 3x3 to 3x4

uniform.__data[ 0 ] = value.elements[ 0 ];
						uniform.__data[ 1 ] = value.elements[ 1 ];
						uniform.__data[ 2 ] = value.elements[ 2 ];
						uniform.__data[ 3 ] = value.elements[ 0 ];
						uniform.__data[ 4 ] = value.elements[ 3 ];
						uniform.__data[ 5 ] = value.elements[ 4 ];
						uniform.__data[ 6 ] = value.elements[ 5 ];
						uniform.__data[ 7 ] = value.elements[ 0 ];
						uniform.__data[ 8 ] = value.elements[ 6 ];
						uniform.__data[ 9 ] = value.elements[ 7 ];
						uniform.__data[ 10 ] = value.elements[ 8 ];
						uniform.__data[ 11 ] = value.elements[ 0 ];

} else {

value.toArray( uniform.__data, arrayOffset );

arrayOffset += info.storage / Float32Array.BYTES_PER_ELEMENT;

}

gl.bufferSubData( 35345, offset, uniform.__data );

}

gl.bindBuffer( 35345, null );

}

function hasUniformChanged( uniform, index, cache ) {

const value = uniform.value;

if ( cache[ index ] === undefined ) {

// cache entry does not exist so far

if ( typeof value === 'number' ) {

cache[ index ] = value;

} else {

const values = Array.isArray( value ) ? value : [ value ];

const tempValues = [];

for ( let i = 0; i < values.length; i ++ ) {

tempValues.push( values[ i ].clone() );

}

cache[ index ] = tempValues;

}

return true;

} else {

// compare current value with cached entry

if ( typeof value === 'number' ) {

if ( cache[ index ] !== value ) {

cache[ index ] = value;
					return true;

}

} else {

const cachedObjects = Array.isArray( cache[ index ] ) ? cache[ index ] : [ cache[ index ] ];
				const values = Array.isArray( value ) ? value : [ value ];

for ( let i = 0; i < cachedObjects.length; i ++ ) {

const cachedObject = cachedObjects[ i ];

if ( cachedObject.equals( values[ i ] ) === false ) {

cachedObject.copy( values[ i ] );
						return true;

}

return false;

}

function prepareUniformsGroup( uniformsGroup ) {

// determine total buffer size according to the STD140 layout
		// Hint: STD140 is the only supported layout in WebGL 2

const uniforms = uniformsGroup.uniforms;

let offset = 0; // global buffer offset in bytes
		const chunkSize = 16; // size of a chunk in bytes
		let chunkOffset = 0; // offset within a single chunk in bytes

for ( let i = 0, l = uniforms.length; i < l; i ++ ) {

const uniform = uniforms[ i ];

const infos = {
				boundary: 0, // bytes
				storage: 0 // bytes
			};

const values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];

for ( let j = 0, jl = values.length; j < jl; j ++ ) {

const value = values[ j ];

const info = getUniformSize( value );

infos.boundary += info.boundary;
				infos.storage += info.storage;

}

// the following two properties will be used for partial buffer updates

uniform.__data = new Float32Array( infos.storage / Float32Array.BYTES_PER_ELEMENT );
			uniform.__offset = offset;

if ( i > 0 ) {

chunkOffset = offset % chunkSize;

const remainingSizeInChunk = chunkSize - chunkOffset;

// check for chunk overflow

if ( chunkOffset !== 0 && ( remainingSizeInChunk - infos.boundary ) < 0 ) {

// add padding and adjust offset

offset += ( chunkSize - chunkOffset );
					uniform.__offset = offset;

}

offset += infos.storage;

}

// ensure correct final padding

chunkOffset = offset % chunkSize;

if ( chunkOffset > 0 ) offset += ( chunkSize - chunkOffset );

uniformsGroup.__size = offset;
		uniformsGroup.__cache = {};

return this;

}

function getUniformSize( value ) {

const info = {
			boundary: 0, // bytes
			storage: 0 // bytes
		};

// determine sizes according to STD140

if ( typeof value === 'number' ) {

// float/int

info.boundary = 4;
			info.storage = 4;

} else if ( value.isVector2 ) {

// vec2

info.boundary = 8;
			info.storage = 8;

} else if ( value.isVector3 || value.isColor ) {

// vec3

info.boundary = 16;
			info.storage = 12; // evil: vec3 must start on a 16-byte boundary but it only consumes 12 bytes

} else if ( value.isVector4 ) {

// vec4

info.boundary = 16;
			info.storage = 16;

} else if ( value.isMatrix3 ) {

// mat3 (in STD140 a 3x3 matrix is represented as 3x4)

info.boundary = 48;
			info.storage = 48;

} else if ( value.isMatrix4 ) {

// mat4

info.boundary = 64;
			info.storage = 64;

} else if ( value.isTexture ) {

console.warn( 'THREE.WebGLRenderer: Texture samplers can not be part of an uniforms group.' );

} else {

console.warn( 'THREE.WebGLRenderer: Unsupported uniform value type.', value );

}

return info;

}

function onUniformsGroupsDispose( event ) {

const uniformsGroup = event.target;

uniformsGroup.removeEventListener( 'dispose', onUniformsGroupsDispose );

const index = allocatedBindingPoints.indexOf( uniformsGroup.__bindingPointIndex );
		allocatedBindingPoints.splice( index, 1 );

gl.deleteBuffer( buffers[ uniformsGroup.id ] );

delete buffers[ uniformsGroup.id ];
		delete updateList[ uniformsGroup.id ];

}

function dispose() {

for ( const id in buffers ) {

gl.deleteBuffer( buffers[ id ] );

}

allocatedBindingPoints = [];
		buffers = {};
		updateList = {};

}

return {

bind: bind,
		update: update,

dispose: dispose

};

}

function createCanvasElement() {

const canvas = createElementNS( 'canvas' );
	canvas.style.display = 'block';
	return canvas;

}

class WebGLRenderer {

constructor( parameters = {} ) {

const {
			canvas = createCanvasElement(),
			context = null,
			depth = true,
			stencil = true,
			alpha = false,
			antialias = false,
			premultipliedAlpha = true,
			preserveDrawingBuffer = false,
			powerPreference = 'default',
			failIfMajorPerformanceCaveat = false,
		} = parameters;

this.isWebGLRenderer = true;

let _alpha;

if ( context !== null ) {

_alpha = context.getContextAttributes().alpha;

} else {

_alpha = alpha;

}

let currentRenderList = null;
		let currentRenderState = null;

// render() can be called from within a callback triggered by another render.
		// We track this so that the nested render call gets its list and state isolated from the parent render call.

const renderListStack = [];
		const renderStateStack = [];

// public properties

this.domElement = canvas;

// Debug configuration container
		this.debug = {

/**
			 * Enables error checking and reporting when shader programs are being compiled
			 * @type {boolean}
			 */
			checkShaderErrors: true,
			/**
			 * Callback for custom error reporting.
			 * @type {?Function}
			 */
			onShaderError: null
		};

// clearing

this.autoClear = true;
		this.autoClearColor = true;
		this.autoClearDepth = true;
		this.autoClearStencil = true;

// scene graph

this.sortObjects = true;

// user-defined clipping

this.clippingPlanes = [];
		this.localClippingEnabled = false;

// physically based shading

this.outputEncoding = LinearEncoding;

// physical lights

this.useLegacyLights = true;

// tone mapping

this.toneMapping = NoToneMapping;
		this.toneMappingExposure = 1.0;

// internal properties

const _this = this;

let _isContextLost = false;

// internal state cache

let _currentActiveCubeFace = 0;
		let _currentActiveMipmapLevel = 0;
		let _currentRenderTarget = null;
		let _currentMaterialId = - 1;

let _currentCamera = null;

const _currentViewport = new Vector4();
		const _currentScissor = new Vector4();
		let _currentScissorTest = null;

let _width = canvas.width;
		let _height = canvas.height;

let _pixelRatio = 1;
		let _opaqueSort = null;
		let _transparentSort = null;

const _viewport = new Vector4( 0, 0, _width, _height );
		const _scissor = new Vector4( 0, 0, _width, _height );
		let _scissorTest = false;

// frustum

const _frustum = new Frustum();

// clipping

let _clippingEnabled = false;
		let _localClippingEnabled = false;

// transmission

let _transmissionRenderTarget = null;

// camera matrices cache

const _projScreenMatrix = new Matrix4();

const _vector3 = new Vector3();

const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };

function getTargetPixelRatio() {

return _currentRenderTarget === null ? _pixelRatio : 1;

}

// initialize

let _gl = context;

function getContext( contextNames, contextAttributes ) {

for ( let i = 0; i < contextNames.length; i ++ ) {

const contextName = contextNames[ i ];
				const context = canvas.getContext( contextName, contextAttributes );
				if ( context !== null ) return context;

}

return null;

}

try {

const contextAttributes = {
				alpha: true,
				depth,
				stencil,
				antialias,
				premultipliedAlpha,
				preserveDrawingBuffer,
				powerPreference,
				failIfMajorPerformanceCaveat,
			};

// OffscreenCanvas does not have setAttribute, see #22811
			if ( 'setAttribute' in canvas ) canvas.setAttribute( 'data-engine', `three.js r${REVISION}` );

// event listeners must be registered before WebGL context is created, see #12753
			canvas.addEventListener( 'webglcontextlost', onContextLost, false );
			canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
			canvas.addEventListener( 'webglcontextcreationerror', onContextCreationError, false );

if ( _gl === null ) {

const contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];

if ( _this.isWebGL1Renderer === true ) {

contextNames.shift();

}

_gl = getContext( contextNames, contextAttributes );

if ( _gl === null ) {

if ( getContext( contextNames ) ) {

throw new Error( 'Error creating WebGL context with your selected attributes.' );

} else {

throw new Error( 'Error creating WebGL context.' );

}

// Some experimental-webgl implementations do not have getShaderPrecisionFormat

if ( _gl.getShaderPrecisionFormat === undefined ) {

_gl.getShaderPrecisionFormat = function () {

return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };

};

}

} catch ( error ) {

console.error( 'THREE.WebGLRenderer: ' + error.message );
			throw error;

}

let extensions, capabilities, state, info;
		let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
		let programCache, materials, renderLists, renderStates, clipping, shadowMap;

let background, morphtargets, bufferRenderer, indexedBufferRenderer;

let utils, bindingStates, uniformsGroups;

function initGLContext() {

extensions = new WebGLExtensions( _gl );

capabilities = new WebGLCapabilities( _gl, extensions, parameters );

extensions.init( capabilities );

utils = new WebGLUtils( _gl, extensions, capabilities );

state = new WebGLState( _gl, extensions, capabilities );

info = new WebGLInfo();
			properties = new WebGLProperties();
			textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
			cubemaps = new WebGLCubeMaps( _this );
			cubeuvmaps = new WebGLCubeUVMaps( _this );
			attributes = new WebGLAttributes( _gl, capabilities );
			bindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );
			geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
			objects = new WebGLObjects( _gl, geometries, attributes, info );
			morphtargets = new WebGLMorphtargets( _gl, capabilities, textures );
			clipping = new WebGLClipping( properties );
			programCache = new WebGLPrograms( _this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping );
			materials = new WebGLMaterials( _this, properties );
			renderLists = new WebGLRenderLists();
			renderStates = new WebGLRenderStates( extensions, capabilities );
			background = new WebGLBackground( _this, cubemaps, cubeuvmaps, state, objects, _alpha, premultipliedAlpha );
			shadowMap = new WebGLShadowMap( _this, objects, capabilities );
			uniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );

bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
			indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );

info.programs = programCache.programs;

_this.capabilities = capabilities;
			_this.extensions = extensions;
			_this.properties = properties;
			_this.renderLists = renderLists;
			_this.shadowMap = shadowMap;
			_this.state = state;
			_this.info = info;

}

initGLContext();

// xr

const xr = new WebXRManager( _this, _gl );

this.xr = xr;

// API

this.getContext = function () {

return _gl;

};

this.getContextAttributes = function () {

return _gl.getContextAttributes();

};

this.forceContextLoss = function () {

const extension = extensions.get( 'WEBGL_lose_context' );
			if ( extension ) extension.loseContext();

};

this.forceContextRestore = function () {

const extension = extensions.get( 'WEBGL_lose_context' );
			if ( extension ) extension.restoreContext();

};

this.getPixelRatio = function () {

return _pixelRatio;

};

this.setPixelRatio = function ( value ) {

if ( value === undefined ) return;

_pixelRatio = value;

this.setSize( _width, _height, false );

};

this.getSize = function ( target ) {

return target.set( _width, _height );

};

this.setSize = function ( width, height, updateStyle = true ) {

if ( xr.isPresenting ) {

console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
				return;

}

_width = width;
			_height = height;

canvas.width = Math.floor( width * _pixelRatio );
			canvas.height = Math.floor( height * _pixelRatio );

if ( updateStyle === true ) {

canvas.style.width = width + 'px';
				canvas.style.height = height + 'px';

}

this.setViewport( 0, 0, width, height );

};

this.getDrawingBufferSize = function ( target ) {

return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();

};

this.setDrawingBufferSize = function ( width, height, pixelRatio ) {

_width = width;
			_height = height;

_pixelRatio = pixelRatio;

canvas.width = Math.floor( width * pixelRatio );
			canvas.height = Math.floor( height * pixelRatio );

this.setViewport( 0, 0, width, height );

};

this.getCurrentViewport = function ( target ) {

return target.copy( _currentViewport );

};

this.getViewport = function ( target ) {

return target.copy( _viewport );

};

this.setViewport = function ( x, y, width, height ) {

if ( x.isVector4 ) {

_viewport.set( x.x, x.y, x.z, x.w );

} else {

_viewport.set( x, y, width, height );

}

state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );

};

this.getScissor = function ( target ) {

return target.copy( _scissor );

};

this.setScissor = function ( x, y, width, height ) {

if ( x.isVector4 ) {

_scissor.set( x.x, x.y, x.z, x.w );

} else {

_scissor.set( x, y, width, height );

}

state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );

};

this.getScissorTest = function () {

return _scissorTest;

};

this.setScissorTest = function ( boolean ) {

state.setScissorTest( _scissorTest = boolean );

};

this.setOpaqueSort = function ( method ) {

_opaqueSort = method;

};

this.setTransparentSort = function ( method ) {

_transparentSort = method;

};

// Clearing

this.getClearColor = function ( target ) {

return target.copy( background.getClearColor() );

};

this.setClearColor = function () {

background.setClearColor.apply( background, arguments );

};

this.getClearAlpha = function () {

return background.getClearAlpha();

};

this.setClearAlpha = function () {

background.setClearAlpha.apply( background, arguments );

};

this.clear = function ( color = true, depth = true, stencil = true ) {

let bits = 0;

if ( color ) bits |= 16384;
			if ( depth ) bits |= 256;
			if ( stencil ) bits |= 1024;

_gl.clear( bits );

};

this.clearColor = function () {

this.clear( true, false, false );

};

this.clearDepth = function () {

this.clear( false, true, false );

};

this.clearStencil = function () {

this.clear( false, false, true );

};

this.dispose = function () {

canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
			canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
			canvas.removeEventListener( 'webglcontextcreationerror', onContextCreationError, false );

renderLists.dispose();
			renderStates.dispose();
			properties.dispose();
			cubemaps.dispose();
			cubeuvmaps.dispose();
			objects.dispose();
			bindingStates.dispose();
			uniformsGroups.dispose();
			programCache.dispose();

xr.dispose();

xr.removeEventListener( 'sessionstart', onXRSessionStart );
			xr.removeEventListener( 'sessionend', onXRSessionEnd );

if ( _transmissionRenderTarget ) {

_transmissionRenderTarget.dispose();
				_transmissionRenderTarget = null;

}

animation.stop();

};

// Events

function onContextLost( event ) {

event.preventDefault();

console.log( 'THREE.WebGLRenderer: Context Lost.' );

_isContextLost = true;

}

function onContextRestore( /* event */ ) {

console.log( 'THREE.WebGLRenderer: Context Restored.' );

_isContextLost = false;

const infoAutoReset = info.autoReset;
			const shadowMapEnabled = shadowMap.enabled;
			const shadowMapAutoUpdate = shadowMap.autoUpdate;
			const shadowMapNeedsUpdate = shadowMap.needsUpdate;
			const shadowMapType = shadowMap.type;

initGLContext();

info.autoReset = infoAutoReset;
			shadowMap.enabled = shadowMapEnabled;
			shadowMap.autoUpdate = shadowMapAutoUpdate;
			shadowMap.needsUpdate = shadowMapNeedsUpdate;
			shadowMap.type = shadowMapType;

}

function onContextCreationError( event ) {

console.error( 'THREE.WebGLRenderer: A WebGL context could not be created. Reason: ', event.statusMessage );

}

function onMaterialDispose( event ) {

const material = event.target;

material.removeEventListener( 'dispose', onMaterialDispose );

deallocateMaterial( material );

}

// Buffer deallocation

function deallocateMaterial( material ) {

releaseMaterialProgramReferences( material );

properties.remove( material );

}

function releaseMaterialProgramReferences( material ) {

const programs = properties.get( material ).programs;

if ( programs !== undefined ) {

programs.forEach( function ( program ) {

programCache.releaseProgram( program );

} );

if ( material.isShaderMaterial ) {

programCache.releaseShaderCache( material );

}

// Buffer rendering

this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {

if ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)

const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );

const program = setProgram( camera, scene, geometry, material, object );

state.setMaterial( material, frontFaceCW );

let index = geometry.index;
			let rangeFactor = 1;

if ( material.wireframe === true ) {

index = geometries.getWireframeAttribute( geometry );
				rangeFactor = 2;

}

const drawRange = geometry.drawRange;
			const position = geometry.attributes.position;

let drawStart = drawRange.start * rangeFactor;
			let drawEnd = ( drawRange.start + drawRange.count ) * rangeFactor;

if ( group !== null ) {

drawStart = Math.max( drawStart, group.start * rangeFactor );
				drawEnd = Math.min( drawEnd, ( group.start + group.count ) * rangeFactor );

}

if ( index !== null ) {

drawStart = Math.max( drawStart, 0 );
				drawEnd = Math.min( drawEnd, index.count );

} else if ( position !== undefined && position !== null ) {

drawStart = Math.max( drawStart, 0 );
				drawEnd = Math.min( drawEnd, position.count );

}

const drawCount = drawEnd - drawStart;

if ( drawCount < 0 || drawCount === Infinity ) return;

bindingStates.setup( object, material, program, geometry, index );

let attribute;
			let renderer = bufferRenderer;

if ( index !== null ) {

attribute = attributes.get( index );

renderer = indexedBufferRenderer;
				renderer.setIndex( attribute );

}

if ( object.isMesh ) {

if ( material.wireframe === true ) {

state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
					renderer.setMode( 1 );

} else {

renderer.setMode( 4 );

}

} else if ( object.isLine ) {

let lineWidth = material.linewidth;

if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material

state.setLineWidth( lineWidth * getTargetPixelRatio() );

if ( object.isLineSegments ) {

renderer.setMode( 1 );

} else if ( object.isLineLoop ) {

renderer.setMode( 2 );

} else {

renderer.setMode( 3 );

}

} else if ( object.isPoints ) {

renderer.setMode( 0 );

} else if ( object.isSprite ) {

renderer.setMode( 4 );

}

if ( object.isInstancedMesh ) {

renderer.renderInstances( drawStart, drawCount, object.count );

} else if ( geometry.isInstancedBufferGeometry ) {

const maxInstanceCount = geometry._maxInstanceCount !== undefined ? geometry._maxInstanceCount : Infinity;
				const instanceCount = Math.min( geometry.instanceCount, maxInstanceCount );

renderer.renderInstances( drawStart, drawCount, instanceCount );

} else {

renderer.render( drawStart, drawCount );

}

};

// Compile

this.compile = function ( scene, camera ) {

function prepare( material, scene, object ) {

if ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {

material.side = BackSide;
					material.needsUpdate = true;
					getProgram( material, scene, object );

material.side = FrontSide;
					material.needsUpdate = true;
					getProgram( material, scene, object );

material.side = DoubleSide;

} else {

getProgram( material, scene, object );

}

currentRenderState = renderStates.get( scene );
			currentRenderState.init();

renderStateStack.push( currentRenderState );

scene.traverseVisible( function ( object ) {

if ( object.isLight && object.layers.test( camera.layers ) ) {

currentRenderState.pushLight( object );

if ( object.castShadow ) {

currentRenderState.pushShadow( object );

}

} );

currentRenderState.setupLights( _this.useLegacyLights );

scene.traverse( function ( object ) {

const material = object.material;

if ( material ) {

if ( Array.isArray( material ) ) {

for ( let i = 0; i < material.length; i ++ ) {

const material2 = material[ i ];

prepare( material2, scene, object );

}

} else {

prepare( material, scene, object );

}

} );

renderStateStack.pop();
			currentRenderState = null;

};

// Animation Loop

let onAnimationFrameCallback = null;

function onAnimationFrame( time ) {

if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );

}

function onXRSessionStart() {

animation.stop();

}

function onXRSessionEnd() {

animation.start();

}

const animation = new WebGLAnimation();
		animation.setAnimationLoop( onAnimationFrame );

if ( typeof self !== 'undefined' ) animation.setContext( self );

this.setAnimationLoop = function ( callback ) {

onAnimationFrameCallback = callback;
			xr.setAnimationLoop( callback );

( callback === null ) ? animation.stop() : animation.start();

};

xr.addEventListener( 'sessionstart', onXRSessionStart );
		xr.addEventListener( 'sessionend', onXRSessionEnd );

// Rendering

this.render = function ( scene, camera ) {

if ( camera !== undefined && camera.isCamera !== true ) {

console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
				return;

}

if ( _isContextLost === true ) return;

// update scene graph

if ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();

// update camera matrices and frustum

if ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();

if ( xr.enabled === true && xr.isPresenting === true ) {

if ( xr.cameraAutoUpdate === true ) xr.updateCamera( camera );

camera = xr.getCamera(); // use XR camera for rendering

}

//
			if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, _currentRenderTarget );

currentRenderState = renderStates.get( scene, renderStateStack.length );
			currentRenderState.init();

renderStateStack.push( currentRenderState );

_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
			_frustum.setFromProjectionMatrix( _projScreenMatrix );

_localClippingEnabled = this.localClippingEnabled;
			_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled );

currentRenderList = renderLists.get( scene, renderListStack.length );
			currentRenderList.init();

renderListStack.push( currentRenderList );

projectObject( scene, camera, 0, _this.sortObjects );

currentRenderList.finish();

if ( _this.sortObjects === true ) {

currentRenderList.sort( _opaqueSort, _transparentSort );

}

if ( _clippingEnabled === true ) clipping.beginShadows();

const shadowsArray = currentRenderState.state.shadowsArray;

shadowMap.render( shadowsArray, scene, camera );

if ( _clippingEnabled === true ) clipping.endShadows();

if ( this.info.autoReset === true ) this.info.reset();

background.render( currentRenderList, scene );

// render scene

currentRenderState.setupLights( _this.useLegacyLights );

if ( camera.isArrayCamera ) {

const cameras = camera.cameras;

for ( let i = 0, l = cameras.length; i < l; i ++ ) {

const camera2 = cameras[ i ];

renderScene( currentRenderList, scene, camera2, camera2.viewport );

}

} else {

renderScene( currentRenderList, scene, camera );

}

if ( _currentRenderTarget !== null ) {

// resolve multisample renderbuffers to a single-sample texture if necessary

textures.updateMultisampleRenderTarget( _currentRenderTarget );

// Generate mipmap if we're using any kind of mipmap filtering

textures.updateRenderTargetMipmap( _currentRenderTarget );

}

if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );

// _gl.finish();

bindingStates.resetDefaultState();
			_currentMaterialId = - 1;
			_currentCamera = null;

renderStateStack.pop();

if ( renderStateStack.length > 0 ) {

currentRenderState = renderStateStack[ renderStateStack.length - 1 ];

} else {

currentRenderState = null;

}

renderListStack.pop();

if ( renderListStack.length > 0 ) {

currentRenderList = renderListStack[ renderListStack.length - 1 ];

} else {

currentRenderList = null;

}

};

function projectObject( object, camera, groupOrder, sortObjects ) {

if ( object.visible === false ) return;

const visible = object.layers.test( camera.layers );

if ( visible ) {

if ( object.isGroup ) {

groupOrder = object.renderOrder;

} else if ( object.isLOD ) {

if ( object.autoUpdate === true ) object.update( camera );

} else if ( object.isLight ) {

currentRenderState.pushLight( object );

if ( object.castShadow ) {

currentRenderState.pushShadow( object );

}

} else if ( object.isSprite ) {

if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {

if ( sortObjects ) {

_vector3.setFromMatrixPosition( object.matrixWorld )
								.applyMatrix4( _projScreenMatrix );

}

const geometry = objects.update( object );
						const material = object.material;

if ( material.visible ) {

currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

}

} else if ( object.isMesh || object.isLine || object.isPoints ) {

if ( object.isSkinnedMesh ) {

// update skeleton only once in a frame

if ( object.skeleton.frame !== info.render.frame ) {

object.skeleton.update();
							object.skeleton.frame = info.render.frame;

}

if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {

if ( sortObjects ) {

_vector3.setFromMatrixPosition( object.matrixWorld )
								.applyMatrix4( _projScreenMatrix );

}

const geometry = objects.update( object );
						const material = object.material;

if ( Array.isArray( material ) ) {

const groups = geometry.groups;

for ( let i = 0, l = groups.length; i < l; i ++ ) {

const group = groups[ i ];
								const groupMaterial = material[ group.materialIndex ];

if ( groupMaterial && groupMaterial.visible ) {

currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );

}

} else if ( material.visible ) {

currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );

}

const children = object.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

projectObject( children[ i ], camera, groupOrder, sortObjects );

}

function renderScene( currentRenderList, scene, camera, viewport ) {

const opaqueObjects = currentRenderList.opaque;
			const transmissiveObjects = currentRenderList.transmissive;
			const transparentObjects = currentRenderList.transparent;

currentRenderState.setupLightsView( camera );

if ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, camera );

if ( transmissiveObjects.length > 0 ) renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera );

if ( viewport ) state.viewport( _currentViewport.copy( viewport ) );

if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
			if ( transmissiveObjects.length > 0 ) renderObjects( transmissiveObjects, scene, camera );
			if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );

// Ensure depth buffer writing is enabled so it can be cleared on next render

state.buffers.depth.setTest( true );
			state.buffers.depth.setMask( true );
			state.buffers.color.setMask( true );

state.setPolygonOffset( false );

}

function renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera ) {

if ( _transmissionRenderTarget === null ) {

const isWebGL2 = capabilities.isWebGL2;

_transmissionRenderTarget = new WebGLRenderTarget( 1024, 1024, {
					generateMipmaps: true,
					type: extensions.has( 'EXT_color_buffer_half_float' ) ? HalfFloatType : UnsignedByteType,
					minFilter: LinearMipmapLinearFilter,
					samples: ( isWebGL2 && antialias === true ) ? 4 : 0
				} );

// debug

/*
				const geometry = new PlaneGeometry();
				const material = new MeshBasicMaterial( { map: _transmissionRenderTarget.texture } );

const mesh = new Mesh( geometry, material );
				scene.add( mesh );
				*/

}

const currentRenderTarget = _this.getRenderTarget();
			_this.setRenderTarget( _transmissionRenderTarget );
			_this.clear();

// Turn off the features which can affect the frag color for opaque objects pass.
			// Otherwise they are applied twice in opaque objects pass and transmission objects pass.
			const currentToneMapping = _this.toneMapping;
			_this.toneMapping = NoToneMapping;

renderObjects( opaqueObjects, scene, camera );

textures.updateMultisampleRenderTarget( _transmissionRenderTarget );
			textures.updateRenderTargetMipmap( _transmissionRenderTarget );

let renderTargetNeedsUpdate = false;

for ( let i = 0, l = transmissiveObjects.length; i < l; i ++ ) {

const renderItem = transmissiveObjects[ i ];

const object = renderItem.object;
				const geometry = renderItem.geometry;
				const material = renderItem.material;
				const group = renderItem.group;

if ( material.side === DoubleSide && object.layers.test( camera.layers ) ) {

const currentSide = material.side;

material.side = BackSide;
					material.needsUpdate = true;

renderObject( object, scene, camera, geometry, material, group );

material.side = currentSide;
					material.needsUpdate = true;

renderTargetNeedsUpdate = true;

}

if ( renderTargetNeedsUpdate === true ) {

textures.updateMultisampleRenderTarget( _transmissionRenderTarget );
				textures.updateRenderTargetMipmap( _transmissionRenderTarget );

}

_this.setRenderTarget( currentRenderTarget );

_this.toneMapping = currentToneMapping;

}

function renderObjects( renderList, scene, camera ) {

const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;

for ( let i = 0, l = renderList.length; i < l; i ++ ) {

const renderItem = renderList[ i ];

const object = renderItem.object;
				const geometry = renderItem.geometry;
				const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
				const group = renderItem.group;

if ( object.layers.test( camera.layers ) ) {

renderObject( object, scene, camera, geometry, material, group );

}

function renderObject( object, scene, camera, geometry, material, group ) {

object.onBeforeRender( _this, scene, camera, geometry, material, group );

object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
			object.normalMatrix.getNormalMatrix( object.modelViewMatrix );

material.onBeforeRender( _this, scene, camera, geometry, object, group );

if ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {

material.side = BackSide;
				material.needsUpdate = true;
				_this.renderBufferDirect( camera, scene, geometry, material, object, group );

material.side = FrontSide;
				material.needsUpdate = true;
				_this.renderBufferDirect( camera, scene, geometry, material, object, group );

material.side = DoubleSide;

} else {

_this.renderBufferDirect( camera, scene, geometry, material, object, group );

}

object.onAfterRender( _this, scene, camera, geometry, material, group );

}

function getProgram( material, scene, object ) {

if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

const materialProperties = properties.get( material );

const lights = currentRenderState.state.lights;
			const shadowsArray = currentRenderState.state.shadowsArray;

const lightsStateVersion = lights.state.version;

const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
			const programCacheKey = programCache.getProgramCacheKey( parameters );

let programs = materialProperties.programs;

// always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change

materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
			materialProperties.fog = scene.fog;
			materialProperties.envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || materialProperties.environment );

if ( programs === undefined ) {

// new material

material.addEventListener( 'dispose', onMaterialDispose );

programs = new Map();
				materialProperties.programs = programs;

}

let program = programs.get( programCacheKey );

if ( program !== undefined ) {

// early out if program and light state is identical

if ( materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion ) {

updateCommonMaterialProperties( material, parameters );

return program;

}

} else {

parameters.uniforms = programCache.getUniforms( material );

material.onBuild( object, parameters, _this );

material.onBeforeCompile( parameters, _this );

program = programCache.acquireProgram( parameters, programCacheKey );
				programs.set( programCacheKey, program );

materialProperties.uniforms = parameters.uniforms;

}

const uniforms = materialProperties.uniforms;

if ( ( ! material.isShaderMaterial && ! material.isRawShaderMaterial ) || material.clipping === true ) {

uniforms.clippingPlanes = clipping.uniform;

}

updateCommonMaterialProperties( material, parameters );

// store the light setup it was created for

materialProperties.needsLights = materialNeedsLights( material );
			materialProperties.lightsStateVersion = lightsStateVersion;

if ( materialProperties.needsLights ) {

// wire up the material to this renderer's lighting state

uniforms.ambientLightColor.value = lights.state.ambient;
				uniforms.lightProbe.value = lights.state.probe;
				uniforms.directionalLights.value = lights.state.directional;
				uniforms.directionalLightShadows.value = lights.state.directionalShadow;
				uniforms.spotLights.value = lights.state.spot;
				uniforms.spotLightShadows.value = lights.state.spotShadow;
				uniforms.rectAreaLights.value = lights.state.rectArea;
				uniforms.ltc_1.value = lights.state.rectAreaLTC1;
				uniforms.ltc_2.value = lights.state.rectAreaLTC2;
				uniforms.pointLights.value = lights.state.point;
				uniforms.pointLightShadows.value = lights.state.pointShadow;
				uniforms.hemisphereLights.value = lights.state.hemi;

uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
				uniforms.spotLightMatrix.value = lights.state.spotLightMatrix;
				uniforms.spotLightMap.value = lights.state.spotLightMap;
				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
				// TODO (abelnation): add area lights shadow info to uniforms

}

const progUniforms = program.getUniforms();
			const uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );

materialProperties.currentProgram = program;
			materialProperties.uniformsList = uniformsList;

return program;

}

function updateCommonMaterialProperties( material, parameters ) {

const materialProperties = properties.get( material );

materialProperties.outputEncoding = parameters.outputEncoding;
			materialProperties.instancing = parameters.instancing;
			materialProperties.skinning = parameters.skinning;
			materialProperties.morphTargets = parameters.morphTargets;
			materialProperties.morphNormals = parameters.morphNormals;
			materialProperties.morphColors = parameters.morphColors;
			materialProperties.morphTargetsCount = parameters.morphTargetsCount;
			materialProperties.numClippingPlanes = parameters.numClippingPlanes;
			materialProperties.numIntersection = parameters.numClipIntersection;
			materialProperties.vertexAlphas = parameters.vertexAlphas;
			materialProperties.vertexTangents = parameters.vertexTangents;
			materialProperties.toneMapping = parameters.toneMapping;

}

function setProgram( camera, scene, geometry, material, object ) {

if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...

textures.resetTextureUnits();

const fog = scene.fog;
			const environment = material.isMeshStandardMaterial ? scene.environment : null;
			const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : ( _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.encoding : LinearEncoding );
			const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
			const vertexAlphas = material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4;
			const vertexTangents = !! material.normalMap && !! geometry.attributes.tangent;
			const morphTargets = !! geometry.morphAttributes.position;
			const morphNormals = !! geometry.morphAttributes.normal;
			const morphColors = !! geometry.morphAttributes.color;
			const toneMapping = material.toneMapped ? _this.toneMapping : NoToneMapping;

const materialProperties = properties.get( material );
			const lights = currentRenderState.state.lights;

if ( _clippingEnabled === true ) {

if ( _localClippingEnabled === true || camera !== _currentCamera ) {

const useCache =
						camera === _currentCamera &&
						material.id === _currentMaterialId;

// we might want to call this function with some ClippingGroup
					// object instead of the material, once it becomes feasible
					// (#8465, #8379)
					clipping.setState( material, camera, useCache );

}

let needsProgramChange = false;

if ( material.version === materialProperties.__version ) {

if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {

needsProgramChange = true;

} else if ( materialProperties.outputEncoding !== encoding ) {

needsProgramChange = true;

} else if ( object.isInstancedMesh && materialProperties.instancing === false ) {

needsProgramChange = true;

} else if ( ! object.isInstancedMesh && materialProperties.instancing === true ) {

needsProgramChange = true;

} else if ( object.isSkinnedMesh && materialProperties.skinning === false ) {

needsProgramChange = true;

} else if ( ! object.isSkinnedMesh && materialProperties.skinning === true ) {

needsProgramChange = true;

} else if ( materialProperties.envMap !== envMap ) {

needsProgramChange = true;

} else if ( material.fog === true && materialProperties.fog !== fog ) {

needsProgramChange = true;

} else if ( materialProperties.numClippingPlanes !== undefined &&
					( materialProperties.numClippingPlanes !== clipping.numPlanes ||
					materialProperties.numIntersection !== clipping.numIntersection ) ) {

needsProgramChange = true;

} else if ( materialProperties.vertexAlphas !== vertexAlphas ) {

needsProgramChange = true;

} else if ( materialProperties.vertexTangents !== vertexTangents ) {

needsProgramChange = true;

} else if ( materialProperties.morphTargets !== morphTargets ) {

needsProgramChange = true;

} else if ( materialProperties.morphNormals !== morphNormals ) {

needsProgramChange = true;

} else if ( materialProperties.morphColors !== morphColors ) {

needsProgramChange = true;

} else if ( materialProperties.toneMapping !== toneMapping ) {

needsProgramChange = true;

} else if ( capabilities.isWebGL2 === true && materialProperties.morphTargetsCount !== morphTargetsCount ) {

needsProgramChange = true;

}

} else {

needsProgramChange = true;
				materialProperties.__version = material.version;

}

let program = materialProperties.currentProgram;

if ( needsProgramChange === true ) {

program = getProgram( material, scene, object );

}

let refreshProgram = false;
			let refreshMaterial = false;
			let refreshLights = false;

const p_uniforms = program.getUniforms(),
				m_uniforms = materialProperties.uniforms;

if ( state.useProgram( program.program ) ) {

refreshProgram = true;
				refreshMaterial = true;
				refreshLights = true;

}

if ( material.id !== _currentMaterialId ) {

_currentMaterialId = material.id;

refreshMaterial = true;

}

if ( refreshProgram || _currentCamera !== camera ) {

p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );

if ( capabilities.logarithmicDepthBuffer ) {

p_uniforms.setValue( _gl, 'logDepthBufFC',
						2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );

}

if ( _currentCamera !== camera ) {

_currentCamera = camera;

// lighting uniforms depend on the camera so enforce an update
					// now, in case this material supports lights - or later, when
					// the next material that does gets activated:

refreshMaterial = true;		// set to true on material change
					refreshLights = true;		// remains set until update done

}

// load material specific uniforms
				// (shader material also gets them for the sake of genericity)

if ( material.isShaderMaterial ||
					material.isMeshPhongMaterial ||
					material.isMeshToonMaterial ||
					material.isMeshStandardMaterial ||
					material.envMap ) {

const uCamPos = p_uniforms.map.cameraPosition;

if ( uCamPos !== undefined ) {

uCamPos.setValue( _gl,
							_vector3.setFromMatrixPosition( camera.matrixWorld ) );

}

if ( material.isMeshPhongMaterial ||
					material.isMeshToonMaterial ||
					material.isMeshLambertMaterial ||
					material.isMeshBasicMaterial ||
					material.isMeshStandardMaterial ||
					material.isShaderMaterial ) {

p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );

}

p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );

}

// skinning and morph target uniforms must be set even if material didn't change
			// auto-setting of texture unit for bone and morph texture must go before other textures
			// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures

if ( object.isSkinnedMesh ) {

p_uniforms.setOptional( _gl, object, 'bindMatrix' );
				p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );

const skeleton = object.skeleton;

if ( skeleton ) {

if ( capabilities.floatVertexTextures ) {

if ( skeleton.boneTexture === null ) skeleton.computeBoneTexture();

p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
						p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );

} else {

console.warn( 'THREE.WebGLRenderer: SkinnedMesh can only be used with WebGL 2. With WebGL 1 OES_texture_float and vertex textures support is required.' );

}

const morphAttributes = geometry.morphAttributes;

if ( morphAttributes.position !== undefined || morphAttributes.normal !== undefined || ( morphAttributes.color !== undefined && capabilities.isWebGL2 === true ) ) {

morphtargets.update( object, geometry, program );

}

if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {

materialProperties.receiveShadow = object.receiveShadow;
				p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );

}

// https://github.com/mrdoob/three.js/pull/24467#issuecomment-1209031512

if ( material.isMeshGouraudMaterial && material.envMap !== null ) {

m_uniforms.envMap.value = envMap;

m_uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;

}

if ( refreshMaterial ) {

p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );

if ( materialProperties.needsLights ) {

// the current material requires lighting info

// note: all lighting uniforms are always set correctly
					// they simply reference the renderer's state for their
					// values
					//
					// use the current material's .needsUpdate flags to set
					// the GL state when required

markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );

}

// refresh uniforms common to several materials

if ( fog && material.fog === true ) {

materials.refreshFogUniforms( m_uniforms, fog );

}

materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget );

WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );

}

if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {

WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
				material.uniformsNeedUpdate = false;

}

if ( material.isSpriteMaterial ) {

p_uniforms.setValue( _gl, 'center', object.center );

}

// common matrices

p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
			p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
			p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );

// UBOs

if ( material.isShaderMaterial || material.isRawShaderMaterial ) {

const groups = material.uniformsGroups;

for ( let i = 0, l = groups.length; i < l; i ++ ) {

if ( capabilities.isWebGL2 ) {

const group = groups[ i ];

uniformsGroups.update( group, program );
						uniformsGroups.bind( group, program );

} else {

console.warn( 'THREE.WebGLRenderer: Uniform Buffer Objects can only be used with WebGL 2.' );

}

return program;

}

// If uniforms are marked as clean, they don't need to be loaded to the GPU.

function markUniformsLightsNeedsUpdate( uniforms, value ) {

uniforms.ambientLightColor.needsUpdate = value;
			uniforms.lightProbe.needsUpdate = value;

uniforms.directionalLights.needsUpdate = value;
			uniforms.directionalLightShadows.needsUpdate = value;
			uniforms.pointLights.needsUpdate = value;
			uniforms.pointLightShadows.needsUpdate = value;
			uniforms.spotLights.needsUpdate = value;
			uniforms.spotLightShadows.needsUpdate = value;
			uniforms.rectAreaLights.needsUpdate = value;
			uniforms.hemisphereLights.needsUpdate = value;

}

function materialNeedsLights( material ) {

return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
				material.isMeshStandardMaterial || material.isShadowMaterial ||
				( material.isShaderMaterial && material.lights === true );

}

this.getActiveCubeFace = function () {

return _currentActiveCubeFace;

};

this.getActiveMipmapLevel = function () {

return _currentActiveMipmapLevel;

};

this.getRenderTarget = function () {

return _currentRenderTarget;

};

this.setRenderTargetTextures = function ( renderTarget, colorTexture, depthTexture ) {

properties.get( renderTarget.texture ).__webglTexture = colorTexture;
			properties.get( renderTarget.depthTexture ).__webglTexture = depthTexture;

const renderTargetProperties = properties.get( renderTarget );
			renderTargetProperties.__hasExternalTextures = true;

if ( renderTargetProperties.__hasExternalTextures ) {

renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;

if ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {

// The multisample_render_to_texture extension doesn't work properly if there
					// are midframe flushes and an external depth buffer. Disable use of the extension.
					if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {

console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
						renderTargetProperties.__useRenderToTexture = false;

}

};

this.setRenderTargetFramebuffer = function ( renderTarget, defaultFramebuffer ) {

const renderTargetProperties = properties.get( renderTarget );
			renderTargetProperties.__webglFramebuffer = defaultFramebuffer;
			renderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === undefined;

};

this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {

_currentRenderTarget = renderTarget;
			_currentActiveCubeFace = activeCubeFace;
			_currentActiveMipmapLevel = activeMipmapLevel;

let useDefaultFramebuffer = true;
			let framebuffer = null;
			let isCube = false;
			let isRenderTarget3D = false;

if ( renderTarget ) {

const renderTargetProperties = properties.get( renderTarget );

if ( renderTargetProperties.__useDefaultFramebuffer !== undefined ) {

// We need to make sure to rebind the framebuffer.
					state.bindFramebuffer( 36160, null );
					useDefaultFramebuffer = false;

} else if ( renderTargetProperties.__webglFramebuffer === undefined ) {

textures.setupRenderTarget( renderTarget );

} else if ( renderTargetProperties.__hasExternalTextures ) {

// Color and depth texture must be rebound in order for the swapchain to update.
					textures.rebindTextures( renderTarget, properties.get( renderTarget.texture ).__webglTexture, properties.get( renderTarget.depthTexture ).__webglTexture );

}

const texture = renderTarget.texture;

if ( texture.isData3DTexture || texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {

isRenderTarget3D = true;

}

const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;

if ( renderTarget.isWebGLCubeRenderTarget ) {

framebuffer = __webglFramebuffer[ activeCubeFace ];
					isCube = true;

} else if ( ( capabilities.isWebGL2 && renderTarget.samples > 0 ) && textures.useMultisampledRTT( renderTarget ) === false ) {

framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;

} else {

framebuffer = __webglFramebuffer;

}

_currentViewport.copy( renderTarget.viewport );
				_currentScissor.copy( renderTarget.scissor );
				_currentScissorTest = renderTarget.scissorTest;

} else {

_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
				_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
				_currentScissorTest = _scissorTest;

}

const framebufferBound = state.bindFramebuffer( 36160, framebuffer );

if ( framebufferBound && capabilities.drawBuffers && useDefaultFramebuffer ) {

state.drawBuffers( renderTarget, framebuffer );

}

state.viewport( _currentViewport );
			state.scissor( _currentScissor );
			state.setScissorTest( _currentScissorTest );

if ( isCube ) {

const textureProperties = properties.get( renderTarget.texture );
				_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );

} else if ( isRenderTarget3D ) {

const textureProperties = properties.get( renderTarget.texture );
				const layer = activeCubeFace || 0;
				_gl.framebufferTextureLayer( 36160, 36064, textureProperties.__webglTexture, activeMipmapLevel || 0, layer );

}

_currentMaterialId = - 1; // reset current material to ensure correct uniform bindings

};

this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {

if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {

console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
				return;

}

let framebuffer = properties.get( renderTarget ).__webglFramebuffer;

if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {

framebuffer = framebuffer[ activeCubeFaceIndex ];

}

if ( framebuffer ) {

state.bindFramebuffer( 36160, framebuffer );

try {

const texture = renderTarget.texture;
					const textureFormat = texture.format;
					const textureType = texture.type;

if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {

console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
						return;

}

const halfFloatSupportedByExt = ( textureType === HalfFloatType ) && ( extensions.has( 'EXT_color_buffer_half_float' ) || ( capabilities.isWebGL2 && extensions.has( 'EXT_color_buffer_float' ) ) );

if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) && // Edge and Chrome Mac < 52 (#9513)
						! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.has( 'OES_texture_float' ) || extensions.has( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox
						! halfFloatSupportedByExt ) {

console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
						return;

}

// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)

if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {

_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );

}

} finally {

// restore framebuffer of current render target if necessary

const framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;
					state.bindFramebuffer( 36160, framebuffer );

}

};

this.copyFramebufferToTexture = function ( position, texture, level = 0 ) {

const levelScale = Math.pow( 2, - level );
			const width = Math.floor( texture.image.width * levelScale );
			const height = Math.floor( texture.image.height * levelScale );

textures.setTexture2D( texture, 0 );

_gl.copyTexSubImage2D( 3553, level, 0, 0, position.x, position.y, width, height );

state.unbindTexture();

};

this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level = 0 ) {

const width = srcTexture.image.width;
			const height = srcTexture.image.height;
			const glFormat = utils.convert( dstTexture.format );
			const glType = utils.convert( dstTexture.type );

textures.setTexture2D( dstTexture, 0 );

// As another texture upload may have changed pixelStorei
			// parameters, make sure they are correct for the dstTexture
			_gl.pixelStorei( 37440, dstTexture.flipY );
			_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
			_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

if ( srcTexture.isDataTexture ) {

_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );

} else {

if ( srcTexture.isCompressedTexture ) {

_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );

} else {

_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );

}

// Generate mipmaps only when copying level 0
			if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );

state.unbindTexture();

};

this.copyTextureToTexture3D = function ( sourceBox, position, srcTexture, dstTexture, level = 0 ) {

if ( _this.isWebGL1Renderer ) {

console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.' );
				return;

}

const width = sourceBox.max.x - sourceBox.min.x + 1;
			const height = sourceBox.max.y - sourceBox.min.y + 1;
			const depth = sourceBox.max.z - sourceBox.min.z + 1;
			const glFormat = utils.convert( dstTexture.format );
			const glType = utils.convert( dstTexture.type );
			let glTarget;

if ( dstTexture.isData3DTexture ) {

textures.setTexture3D( dstTexture, 0 );
				glTarget = 32879;

} else if ( dstTexture.isDataArrayTexture ) {

textures.setTexture2DArray( dstTexture, 0 );
				glTarget = 35866;

} else {

console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.' );
				return;

}

_gl.pixelStorei( 37440, dstTexture.flipY );
			_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
			_gl.pixelStorei( 3317, dstTexture.unpackAlignment );

const unpackRowLen = _gl.getParameter( 3314 );
			const unpackImageHeight = _gl.getParameter( 32878 );
			const unpackSkipPixels = _gl.getParameter( 3316 );
			const unpackSkipRows = _gl.getParameter( 3315 );
			const unpackSkipImages = _gl.getParameter( 32877 );

const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ 0 ] : srcTexture.image;

_gl.pixelStorei( 3314, image.width );
			_gl.pixelStorei( 32878, image.height );
			_gl.pixelStorei( 3316, sourceBox.min.x );
			_gl.pixelStorei( 3315, sourceBox.min.y );
			_gl.pixelStorei( 32877, sourceBox.min.z );

if ( srcTexture.isDataTexture || srcTexture.isData3DTexture ) {

_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image.data );

} else {

if ( srcTexture.isCompressedArrayTexture ) {

console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.' );
					_gl.compressedTexSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, image.data );

} else {

_gl.texSubImage3D( glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image );

}

_gl.pixelStorei( 3314, unpackRowLen );
			_gl.pixelStorei( 32878, unpackImageHeight );
			_gl.pixelStorei( 3316, unpackSkipPixels );
			_gl.pixelStorei( 3315, unpackSkipRows );
			_gl.pixelStorei( 32877, unpackSkipImages );

// Generate mipmaps only when copying level 0
			if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( glTarget );

state.unbindTexture();

};

this.initTexture = function ( texture ) {

if ( texture.isCubeTexture ) {

textures.setTextureCube( texture, 0 );

} else if ( texture.isData3DTexture ) {

textures.setTexture3D( texture, 0 );

} else if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {

textures.setTexture2DArray( texture, 0 );

} else {

textures.setTexture2D( texture, 0 );

}

state.unbindTexture();

};

this.resetState = function () {

_currentActiveCubeFace = 0;
			_currentActiveMipmapLevel = 0;
			_currentRenderTarget = null;

state.reset();
			bindingStates.reset();

};

if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

}

get physicallyCorrectLights() { // @deprecated, r150

console.warn( 'THREE.WebGLRenderer: the property .physicallyCorrectLights has been removed. Set renderer.useLegacyLights instead.' );
		return ! this.useLegacyLights;

}

set physicallyCorrectLights( value ) { // @deprecated, r150

console.warn( 'THREE.WebGLRenderer: the property .physicallyCorrectLights has been removed. Set renderer.useLegacyLights instead.' );
		this.useLegacyLights = ! value;

}

class WebGL1Renderer extends WebGLRenderer {}

WebGL1Renderer.prototype.isWebGL1Renderer = true;

class FogExp2 {

constructor( color, density = 0.00025 ) {

this.isFogExp2 = true;

this.name = '';

this.color = new Color( color );
		this.density = density;

}

clone() {

return new FogExp2( this.color, this.density );

}

toJSON( /* meta */ ) {

return {
			type: 'FogExp2',
			color: this.color.getHex(),
			density: this.density
		};

}

class Fog {

constructor( color, near = 1, far = 1000 ) {

this.isFog = true;

this.name = '';

this.color = new Color( color );

this.near = near;
		this.far = far;

}

clone() {

return new Fog( this.color, this.near, this.far );

}

toJSON( /* meta */ ) {

return {
			type: 'Fog',
			color: this.color.getHex(),
			near: this.near,
			far: this.far
		};

}

class Scene extends Object3D {

constructor() {

super();

this.isScene = true;

this.type = 'Scene';

this.background = null;
		this.environment = null;
		this.fog = null;

this.backgroundBlurriness = 0;
		this.backgroundIntensity = 1;

this.overrideMaterial = null;

if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

}

copy( source, recursive ) {

super.copy( source, recursive );

if ( source.background !== null ) this.background = source.background.clone();
		if ( source.environment !== null ) this.environment = source.environment.clone();
		if ( source.fog !== null ) this.fog = source.fog.clone();

this.backgroundBlurriness = source.backgroundBlurriness;
		this.backgroundIntensity = source.backgroundIntensity;

if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();

this.matrixAutoUpdate = source.matrixAutoUpdate;

return this;

}

toJSON( meta ) {

const data = super.toJSON( meta );

if ( this.fog !== null ) data.object.fog = this.fog.toJSON();
		if ( this.backgroundBlurriness > 0 ) data.object.backgroundBlurriness = this.backgroundBlurriness;
		if ( this.backgroundIntensity !== 1 ) data.object.backgroundIntensity = this.backgroundIntensity;

return data;

}

get autoUpdate() { // @deprecated, r144

console.warn( 'THREE.Scene: autoUpdate was renamed to matrixWorldAutoUpdate in r144.' );
		return this.matrixWorldAutoUpdate;

}

set autoUpdate( value ) { // @deprecated, r144

console.warn( 'THREE.Scene: autoUpdate was renamed to matrixWorldAutoUpdate in r144.' );
		this.matrixWorldAutoUpdate = value;

}

class InterleavedBuffer {

constructor( array, stride ) {

this.isInterleavedBuffer = true;

this.array = array;
		this.stride = stride;
		this.count = array !== undefined ? array.length / stride : 0;

this.usage = StaticDrawUsage;
		this.updateRange = { offset: 0, count: - 1 };

this.version = 0;

this.uuid = generateUUID();

}

onUploadCallback() {}

set needsUpdate( value ) {

if ( value === true ) this.version ++;

}

setUsage( value ) {

this.usage = value;

return this;

}

copy( source ) {

this.array = new source.array.constructor( source.array );
		this.count = source.count;
		this.stride = source.stride;
		this.usage = source.usage;

return this;

}

copyAt( index1, attribute, index2 ) {

index1 *= this.stride;
		index2 *= attribute.stride;

for ( let i = 0, l = this.stride; i < l; i ++ ) {

this.array[ index1 + i ] = attribute.array[ index2 + i ];

}

return this;

}

set( value, offset = 0 ) {

this.array.set( value, offset );

return this;

}

clone( data ) {

if ( data.arrayBuffers === undefined ) {

data.arrayBuffers = {};

}

if ( this.array.buffer._uuid === undefined ) {

this.array.buffer._uuid = generateUUID();

}

if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;

}

const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );

const ib = new this.constructor( array, this.stride );
		ib.setUsage( this.usage );

return ib;

}

onUpload( callback ) {

this.onUploadCallback = callback;

return this;

}

toJSON( data ) {

if ( data.arrayBuffers === undefined ) {

data.arrayBuffers = {};

}

// generate UUID for array buffer if necessary

if ( this.array.buffer._uuid === undefined ) {

this.array.buffer._uuid = generateUUID();

}

if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {

data.arrayBuffers[ this.array.buffer._uuid ] = Array.from( new Uint32Array( this.array.buffer ) );

}

return {
			uuid: this.uuid,
			buffer: this.array.buffer._uuid,
			type: this.array.constructor.name,
			stride: this.stride
		};

}

const _vector$5 = /*@__PURE__*/ new Vector3();

class InterleavedBufferAttribute {

constructor( interleavedBuffer, itemSize, offset, normalized = false ) {

this.isInterleavedBufferAttribute = true;

this.name = '';

this.data = interleavedBuffer;
		this.itemSize = itemSize;
		this.offset = offset;

this.normalized = normalized;

}

get count() {

return this.data.count;

}

get array() {

return this.data.array;

}

set needsUpdate( value ) {

this.data.needsUpdate = value;

}

applyMatrix4( m ) {

for ( let i = 0, l = this.data.count; i < l; i ++ ) {

_vector$5.fromBufferAttribute( this, i );

_vector$5.applyMatrix4( m );

this.setXYZ( i, _vector$5.x, _vector$5.y, _vector$5.z );

}

return this;

}

applyNormalMatrix( m ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$5.fromBufferAttribute( this, i );

_vector$5.applyNormalMatrix( m );

this.setXYZ( i, _vector$5.x, _vector$5.y, _vector$5.z );

}

return this;

}

transformDirection( m ) {

for ( let i = 0, l = this.count; i < l; i ++ ) {

_vector$5.fromBufferAttribute( this, i );

_vector$5.transformDirection( m );

this.setXYZ( i, _vector$5.x, _vector$5.y, _vector$5.z );

}

return this;

}

setX( index, x ) {

if ( this.normalized ) x = normalize( x, this.array );

this.data.array[ index * this.data.stride + this.offset ] = x;

return this;

}

setY( index, y ) {

if ( this.normalized ) y = normalize( y, this.array );

this.data.array[ index * this.data.stride + this.offset + 1 ] = y;

return this;

}

setZ( index, z ) {

if ( this.normalized ) z = normalize( z, this.array );

this.data.array[ index * this.data.stride + this.offset + 2 ] = z;

return this;

}

setW( index, w ) {

if ( this.normalized ) w = normalize( w, this.array );

this.data.array[ index * this.data.stride + this.offset + 3 ] = w;

return this;

}

getX( index ) {

let x = this.data.array[ index * this.data.stride + this.offset ];

if ( this.normalized ) x = denormalize( x, this.array );

return x;

}

getY( index ) {

let y = this.data.array[ index * this.data.stride + this.offset + 1 ];

if ( this.normalized ) y = denormalize( y, this.array );

return y;

}

getZ( index ) {

let z = this.data.array[ index * this.data.stride + this.offset + 2 ];

if ( this.normalized ) z = denormalize( z, this.array );

return z;

}

getW( index ) {

let w = this.data.array[ index * this.data.stride + this.offset + 3 ];

if ( this.normalized ) w = denormalize( w, this.array );

return w;

}

setXY( index, x, y ) {

index = index * this.data.stride + this.offset;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );

}

this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;

return this;

}

setXYZ( index, x, y, z ) {

index = index * this.data.stride + this.offset;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );

}

this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;

return this;

}

setXYZW( index, x, y, z, w ) {

index = index * this.data.stride + this.offset;

if ( this.normalized ) {

x = normalize( x, this.array );
			y = normalize( y, this.array );
			z = normalize( z, this.array );
			w = normalize( w, this.array );

}

this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;
		this.data.array[ index + 3 ] = w;

return this;

}

clone( data ) {

if ( data === undefined ) {

console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will de-interleave buffer data.' );

const array = [];

for ( let i = 0; i < this.count; i ++ ) {

const index = i * this.data.stride + this.offset;

for ( let j = 0; j < this.itemSize; j ++ ) {

array.push( this.data.array[ index + j ] );

}

return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );

} else {

if ( data.interleavedBuffers === undefined ) {

data.interleavedBuffers = {};

}

if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );

}

return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );

}

toJSON( data ) {

if ( data === undefined ) {

console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will de-interleave buffer data.' );

const array = [];

for ( let i = 0; i < this.count; i ++ ) {

const index = i * this.data.stride + this.offset;

for ( let j = 0; j < this.itemSize; j ++ ) {

array.push( this.data.array[ index + j ] );

}

// de-interleave data and save it as an ordinary buffer attribute for now

return {
				itemSize: this.itemSize,
				type: this.array.constructor.name,
				array: array,
				normalized: this.normalized
			};

} else {

// save as true interleaved attribute

if ( data.interleavedBuffers === undefined ) {

data.interleavedBuffers = {};

}

if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {

data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );

}

return {
				isInterleavedBufferAttribute: true,
				itemSize: this.itemSize,
				data: this.data.uuid,
				offset: this.offset,
				normalized: this.normalized
			};

}

class SpriteMaterial extends Material {

constructor( parameters ) {

super();

this.isSpriteMaterial = true;

this.type = 'SpriteMaterial';

this.color = new Color( 0xffffff );

this.map = null;

this.alphaMap = null;

this.rotation = 0;

this.sizeAttenuation = true;

this.transparent = true;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;

this.alphaMap = source.alphaMap;

this.rotation = source.rotation;

this.sizeAttenuation = source.sizeAttenuation;

this.fog = source.fog;

return this;

}

let _geometry;

const _intersectPoint = /*@__PURE__*/ new Vector3();
const _worldScale = /*@__PURE__*/ new Vector3();
const _mvPosition = /*@__PURE__*/ new Vector3();

const _alignedPosition = /*@__PURE__*/ new Vector2();
const _rotatedPosition = /*@__PURE__*/ new Vector2();
const _viewWorldMatrix = /*@__PURE__*/ new Matrix4();

const _vA = /*@__PURE__*/ new Vector3();
const _vB = /*@__PURE__*/ new Vector3();
const _vC = /*@__PURE__*/ new Vector3();

const _uvA = /*@__PURE__*/ new Vector2();
const _uvB = /*@__PURE__*/ new Vector2();
const _uvC = /*@__PURE__*/ new Vector2();

class Sprite extends Object3D {

constructor( material ) {

super();

this.isSprite = true;

this.type = 'Sprite';

if ( _geometry === undefined ) {

_geometry = new BufferGeometry();

const float32Array = new Float32Array( [
				- 0.5, - 0.5, 0, 0, 0,
				0.5, - 0.5, 0, 1, 0,
				0.5, 0.5, 0, 1, 1,
				- 0.5, 0.5, 0, 0, 1
			] );

const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );

_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
			_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
			_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );

}

this.geometry = _geometry;
		this.material = ( material !== undefined ) ? material : new SpriteMaterial();

this.center = new Vector2( 0.5, 0.5 );

}

raycast( raycaster, intersects ) {

if ( raycaster.camera === null ) {

console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );

}

_worldScale.setFromMatrixScale( this.matrixWorld );

_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );

_mvPosition.setFromMatrixPosition( this.modelViewMatrix );

if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {

_worldScale.multiplyScalar( - _mvPosition.z );

}

const rotation = this.material.rotation;
		let sin, cos;

if ( rotation !== 0 ) {

cos = Math.cos( rotation );
			sin = Math.sin( rotation );

}

const center = this.center;

transformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );

_uvA.set( 0, 0 );
		_uvB.set( 1, 0 );
		_uvC.set( 1, 1 );

// check first triangle
		let intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );

if ( intersect === null ) {

// check second triangle
			transformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
			_uvB.set( 0, 1 );

intersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );
			if ( intersect === null ) {

return;

}

const distance = raycaster.ray.origin.distanceTo( _intersectPoint );

if ( distance < raycaster.near || distance > raycaster.far ) return;

intersects.push( {

distance: distance,
			point: _intersectPoint.clone(),
			uv: Triangle.getInterpolation( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),
			face: null,
			object: this

} );

}

copy( source, recursive ) {

super.copy( source, recursive );

if ( source.center !== undefined ) this.center.copy( source.center );

this.material = source.material;

return this;

}

function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {

// compute position in camera space
	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );

// to check if rotation is not zero
	if ( sin !== undefined ) {

_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );

} else {

_rotatedPosition.copy( _alignedPosition );

}

vertexPosition.copy( mvPosition );
	vertexPosition.x += _rotatedPosition.x;
	vertexPosition.y += _rotatedPosition.y;

// transform to world space
	vertexPosition.applyMatrix4( _viewWorldMatrix );

}

const _v1$2 = /*@__PURE__*/ new Vector3();
const _v2$1 = /*@__PURE__*/ new Vector3();

class LOD extends Object3D {

constructor() {

super();

this._currentLevel = 0;

this.type = 'LOD';

Object.defineProperties( this, {
			levels: {
				enumerable: true,
				value: []
			},
			isLOD: {
				value: true,
			}
		} );

this.autoUpdate = true;

}

copy( source ) {

super.copy( source, false );

const levels = source.levels;

for ( let i = 0, l = levels.length; i < l; i ++ ) {

const level = levels[ i ];

this.addLevel( level.object.clone(), level.distance, level.hysteresis );

}

this.autoUpdate = source.autoUpdate;

return this;

}

addLevel( object, distance = 0, hysteresis = 0 ) {

distance = Math.abs( distance );

const levels = this.levels;

let l;

for ( l = 0; l < levels.length; l ++ ) {

if ( distance < levels[ l ].distance ) {

break;

}

levels.splice( l, 0, { distance: distance, hysteresis: hysteresis, object: object } );

this.add( object );

return this;

}

getCurrentLevel() {

return this._currentLevel;

}

getObjectForDistance( distance ) {

const levels = this.levels;

if ( levels.length > 0 ) {

let i, l;

for ( i = 1, l = levels.length; i < l; i ++ ) {

let levelDistance = levels[ i ].distance;

if ( levels[ i ].object.visible ) {

levelDistance -= levelDistance * levels[ i ].hysteresis;

}

if ( distance < levelDistance ) {

break;

}

return levels[ i - 1 ].object;

}

return null;

}

raycast( raycaster, intersects ) {

const levels = this.levels;

if ( levels.length > 0 ) {

_v1$2.setFromMatrixPosition( this.matrixWorld );

const distance = raycaster.ray.origin.distanceTo( _v1$2 );

this.getObjectForDistance( distance ).raycast( raycaster, intersects );

}

update( camera ) {

const levels = this.levels;

if ( levels.length > 1 ) {

_v1$2.setFromMatrixPosition( camera.matrixWorld );
			_v2$1.setFromMatrixPosition( this.matrixWorld );

const distance = _v1$2.distanceTo( _v2$1 ) / camera.zoom;

levels[ 0 ].object.visible = true;

let i, l;

for ( i = 1, l = levels.length; i < l; i ++ ) {

let levelDistance = levels[ i ].distance;

if ( levels[ i ].object.visible ) {

levelDistance -= levelDistance * levels[ i ].hysteresis;

}

if ( distance >= levelDistance ) {

levels[ i - 1 ].object.visible = false;
					levels[ i ].object.visible = true;

} else {

break;

}

this._currentLevel = i - 1;

for ( ; i < l; i ++ ) {

levels[ i ].object.visible = false;

}

toJSON( meta ) {

const data = super.toJSON( meta );

if ( this.autoUpdate === false ) data.object.autoUpdate = false;

data.object.levels = [];

const levels = this.levels;

for ( let i = 0, l = levels.length; i < l; i ++ ) {

const level = levels[ i ];

data.object.levels.push( {
				object: level.object.uuid,
				distance: level.distance,
				hysteresis: level.hysteresis
			} );

}

return data;

}

const _basePosition = /*@__PURE__*/ new Vector3();

const _skinIndex = /*@__PURE__*/ new Vector4();
const _skinWeight = /*@__PURE__*/ new Vector4();

const _vector3 = /*@__PURE__*/ new Vector3();
const _matrix4 = /*@__PURE__*/ new Matrix4();
const _vertex = /*@__PURE__*/ new Vector3();

class SkinnedMesh extends Mesh {

constructor( geometry, material ) {

super( geometry, material );

this.isSkinnedMesh = true;

this.type = 'SkinnedMesh';

this.bindMode = 'attached';
		this.bindMatrix = new Matrix4();
		this.bindMatrixInverse = new Matrix4();

this.boundingBox = null;
		this.boundingSphere = null;

}

computeBoundingBox() {

const geometry = this.geometry;

if ( this.boundingBox === null ) {

this.boundingBox = new Box3();

}

this.boundingBox.makeEmpty();

const positionAttribute = geometry.getAttribute( 'position' );

for ( let i = 0; i < positionAttribute.count; i ++ ) {

_vertex.fromBufferAttribute( positionAttribute, i );
			this.applyBoneTransform( i, _vertex );
			this.boundingBox.expandByPoint( _vertex );

}

computeBoundingSphere() {

const geometry = this.geometry;

if ( this.boundingSphere === null ) {

this.boundingSphere = new Sphere();

}

this.boundingSphere.makeEmpty();

const positionAttribute = geometry.getAttribute( 'position' );

for ( let i = 0; i < positionAttribute.count; i ++ ) {

_vertex.fromBufferAttribute( positionAttribute, i );
			this.applyBoneTransform( i, _vertex );
			this.boundingSphere.expandByPoint( _vertex );

}

copy( source, recursive ) {

super.copy( source, recursive );

this.bindMode = source.bindMode;
		this.bindMatrix.copy( source.bindMatrix );
		this.bindMatrixInverse.copy( source.bindMatrixInverse );

this.skeleton = source.skeleton;

return this;

}

bind( skeleton, bindMatrix ) {

this.skeleton = skeleton;

if ( bindMatrix === undefined ) {

this.updateMatrixWorld( true );

this.skeleton.calculateInverses();

bindMatrix = this.matrixWorld;

}

this.bindMatrix.copy( bindMatrix );
		this.bindMatrixInverse.copy( bindMatrix ).invert();

}

pose() {

this.skeleton.pose();

}

normalizeSkinWeights() {

const vector = new Vector4();

const skinWeight = this.geometry.attributes.skinWeight;

for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {

vector.fromBufferAttribute( skinWeight, i );

const scale = 1.0 / vector.manhattanLength();

if ( scale !== Infinity ) {

vector.multiplyScalar( scale );

} else {

vector.set( 1, 0, 0, 0 ); // do something reasonable

}

skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );

}

updateMatrixWorld( force ) {

super.updateMatrixWorld( force );

if ( this.bindMode === 'attached' ) {

this.bindMatrixInverse.copy( this.matrixWorld ).invert();

} else if ( this.bindMode === 'detached' ) {

this.bindMatrixInverse.copy( this.bindMatrix ).invert();

} else {

console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );

}

applyBoneTransform( index, vector ) {

const skeleton = this.skeleton;
		const geometry = this.geometry;

_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
		_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );

_basePosition.copy( vector ).applyMatrix4( this.bindMatrix );

vector.set( 0, 0, 0 );

for ( let i = 0; i < 4; i ++ ) {

const weight = _skinWeight.getComponent( i );

if ( weight !== 0 ) {

const boneIndex = _skinIndex.getComponent( i );

_matrix4.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );

vector.addScaledVector( _vector3.copy( _basePosition ).applyMatrix4( _matrix4 ), weight );

}

return vector.applyMatrix4( this.bindMatrixInverse );

}

boneTransform( index, vector ) { // @deprecated, r151

console.warn( 'THREE.SkinnedMesh: .boneTransform() was renamed to .applyBoneTransform() in r151.' );
		return this.applyBoneTransform( index, vector );

}

class Bone extends Object3D {

constructor() {

super();

this.isBone = true;

this.type = 'Bone';

}

class DataTexture extends Texture {

constructor( data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, encoding ) {

super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

this.isDataTexture = true;

this.image = { data: data, width: width, height: height };

this.generateMipmaps = false;
		this.flipY = false;
		this.unpackAlignment = 1;

}

const _offsetMatrix = /*@__PURE__*/ new Matrix4();
const _identityMatrix = /*@__PURE__*/ new Matrix4();

class Skeleton {

constructor( bones = [], boneInverses = [] ) {

this.uuid = generateUUID();

this.bones = bones.slice( 0 );
		this.boneInverses = boneInverses;
		this.boneMatrices = null;

this.boneTexture = null;
		this.boneTextureSize = 0;

this.frame = - 1;

this.init();

}

init() {

const bones = this.bones;
		const boneInverses = this.boneInverses;

this.boneMatrices = new Float32Array( bones.length * 16 );

// calculate inverse bone matrices if necessary

if ( boneInverses.length === 0 ) {

this.calculateInverses();

} else {

// handle special case

if ( bones.length !== boneInverses.length ) {

console.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );

this.boneInverses = [];

for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

this.boneInverses.push( new Matrix4() );

}

calculateInverses() {

this.boneInverses.length = 0;

for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

const inverse = new Matrix4();

if ( this.bones[ i ] ) {

inverse.copy( this.bones[ i ].matrixWorld ).invert();

}

this.boneInverses.push( inverse );

}

pose() {

// recover the bind-time world matrices

for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

const bone = this.bones[ i ];

if ( bone ) {

bone.matrixWorld.copy( this.boneInverses[ i ] ).invert();

}

// compute the local matrices, positions, rotations and scales

for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

const bone = this.bones[ i ];

if ( bone ) {

if ( bone.parent && bone.parent.isBone ) {

bone.matrix.copy( bone.parent.matrixWorld ).invert();
					bone.matrix.multiply( bone.matrixWorld );

} else {

bone.matrix.copy( bone.matrixWorld );

}

bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );

}

update() {

const bones = this.bones;
		const boneInverses = this.boneInverses;
		const boneMatrices = this.boneMatrices;
		const boneTexture = this.boneTexture;

// flatten bone matrices to array

for ( let i = 0, il = bones.length; i < il; i ++ ) {

// compute the offset between the current and the original transform

const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;

_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
			_offsetMatrix.toArray( boneMatrices, i * 16 );

}

if ( boneTexture !== null ) {

boneTexture.needsUpdate = true;

}

clone() {

return new Skeleton( this.bones, this.boneInverses );

}

computeBoneTexture() {

// layout (1 matrix = 4 pixels)
		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
		//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
		//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
		//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
		//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)

let size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix
		size = ceilPowerOfTwo( size );
		size = Math.max( size, 4 );

const boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
		boneMatrices.set( this.boneMatrices ); // copy current values

const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
		boneTexture.needsUpdate = true;

this.boneMatrices = boneMatrices;
		this.boneTexture = boneTexture;
		this.boneTextureSize = size;

return this;

}

getBoneByName( name ) {

for ( let i = 0, il = this.bones.length; i < il; i ++ ) {

const bone = this.bones[ i ];

if ( bone.name === name ) {

return bone;

}

return undefined;

}

dispose( ) {

if ( this.boneTexture !== null ) {

this.boneTexture.dispose();

this.boneTexture = null;

}

fromJSON( json, bones ) {

this.uuid = json.uuid;

for ( let i = 0, l = json.bones.length; i < l; i ++ ) {

const uuid = json.bones[ i ];
			let bone = bones[ uuid ];

if ( bone === undefined ) {

console.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );
				bone = new Bone();

}

this.bones.push( bone );
			this.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );

}

this.init();

return this;

}

toJSON() {

const data = {
			metadata: {
				version: 4.5,
				type: 'Skeleton',
				generator: 'Skeleton.toJSON'
			},
			bones: [],
			boneInverses: []
		};

data.uuid = this.uuid;

const bones = this.bones;
		const boneInverses = this.boneInverses;

for ( let i = 0, l = bones.length; i < l; i ++ ) {

const bone = bones[ i ];
			data.bones.push( bone.uuid );

const boneInverse = boneInverses[ i ];
			data.boneInverses.push( boneInverse.toArray() );

}

return data;

}

class InstancedBufferAttribute extends BufferAttribute {

constructor( array, itemSize, normalized, meshPerAttribute = 1 ) {

super( array, itemSize, normalized );

this.isInstancedBufferAttribute = true;

this.meshPerAttribute = meshPerAttribute;

}

copy( source ) {

super.copy( source );

this.meshPerAttribute = source.meshPerAttribute;

return this;

}

toJSON() {

const data = super.toJSON();

data.meshPerAttribute = this.meshPerAttribute;

data.isInstancedBufferAttribute = true;

return data;

}

const _instanceLocalMatrix = /*@__PURE__*/ new Matrix4();
const _instanceWorldMatrix = /*@__PURE__*/ new Matrix4();

const _instanceIntersects = [];

const _box3 = /*@__PURE__*/ new Box3();
const _identity = /*@__PURE__*/ new Matrix4();
const _mesh = /*@__PURE__*/ new Mesh();
const _sphere$2 = /*@__PURE__*/ new Sphere();

class InstancedMesh extends Mesh {

constructor( geometry, material, count ) {

super( geometry, material );

this.isInstancedMesh = true;

this.instanceMatrix = new InstancedBufferAttribute( new Float32Array( count * 16 ), 16 );
		this.instanceColor = null;

this.count = count;

this.boundingBox = null;
		this.boundingSphere = null;

for ( let i = 0; i < count; i ++ ) {

this.setMatrixAt( i, _identity );

}

computeBoundingBox() {

const geometry = this.geometry;
		const count = this.count;

if ( this.boundingBox === null ) {

this.boundingBox = new Box3();

}

if ( geometry.boundingBox === null ) {

geometry.computeBoundingBox();

}

this.boundingBox.makeEmpty();

for ( let i = 0; i < count; i ++ ) {

this.getMatrixAt( i, _instanceLocalMatrix );

_box3.copy( geometry.boundingBox ).applyMatrix4( _instanceLocalMatrix );

this.boundingBox.union( _box3 );

}

computeBoundingSphere() {

const geometry = this.geometry;
		const count = this.count;

if ( this.boundingSphere === null ) {

this.boundingSphere = new Sphere();

}

if ( geometry.boundingSphere === null ) {

geometry.computeBoundingSphere();

}

this.boundingSphere.makeEmpty();

for ( let i = 0; i < count; i ++ ) {

this.getMatrixAt( i, _instanceLocalMatrix );

_sphere$2.copy( geometry.boundingSphere ).applyMatrix4( _instanceLocalMatrix );

this.boundingSphere.union( _sphere$2 );

}

copy( source, recursive ) {

super.copy( source, recursive );

this.instanceMatrix.copy( source.instanceMatrix );

if ( source.instanceColor !== null ) this.instanceColor = source.instanceColor.clone();

this.count = source.count;

return this;

}

getColorAt( index, color ) {

color.fromArray( this.instanceColor.array, index * 3 );

}

getMatrixAt( index, matrix ) {

matrix.fromArray( this.instanceMatrix.array, index * 16 );

}

raycast( raycaster, intersects ) {

const matrixWorld = this.matrixWorld;
		const raycastTimes = this.count;

_mesh.geometry = this.geometry;
		_mesh.material = this.material;

if ( _mesh.material === undefined ) return;

// test with bounding sphere first

if ( this.boundingSphere === null ) this.computeBoundingSphere();

_sphere$2.copy( this.boundingSphere );
		_sphere$2.applyMatrix4( matrixWorld );

if ( raycaster.ray.intersectsSphere( _sphere$2 ) === false ) return;

// now test each instance

for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {

// calculate the world matrix for each instance

this.getMatrixAt( instanceId, _instanceLocalMatrix );

_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );

// the mesh represents this single instance

_mesh.matrixWorld = _instanceWorldMatrix;

_mesh.raycast( raycaster, _instanceIntersects );

// process the result of raycast

for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {

const intersect = _instanceIntersects[ i ];
				intersect.instanceId = instanceId;
				intersect.object = this;
				intersects.push( intersect );

}

_instanceIntersects.length = 0;

}

setColorAt( index, color ) {

if ( this.instanceColor === null ) {

this.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ), 3 );

}

color.toArray( this.instanceColor.array, index * 3 );

}

setMatrixAt( index, matrix ) {

matrix.toArray( this.instanceMatrix.array, index * 16 );

}

updateMorphTargets() {

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

}

class LineBasicMaterial extends Material {

constructor( parameters ) {

super();

this.isLineBasicMaterial = true;

this.type = 'LineBasicMaterial';

this.color = new Color( 0xffffff );

this.map = null;

this.linewidth = 1;
		this.linecap = 'round';
		this.linejoin = 'round';

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;

this.linewidth = source.linewidth;
		this.linecap = source.linecap;
		this.linejoin = source.linejoin;

this.fog = source.fog;

return this;

}

const _start$1 = /*@__PURE__*/ new Vector3();
const _end$1 = /*@__PURE__*/ new Vector3();
const _inverseMatrix$1 = /*@__PURE__*/ new Matrix4();
const _ray$1 = /*@__PURE__*/ new Ray();
const _sphere$1 = /*@__PURE__*/ new Sphere();

class Line extends Object3D {

constructor( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {

super();

this.isLine = true;

this.type = 'Line';

this.geometry = geometry;
		this.material = material;

this.updateMorphTargets();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.material = source.material;
		this.geometry = source.geometry;

return this;

}

computeLineDistances() {

const geometry = this.geometry;

// we assume non-indexed geometry

if ( geometry.index === null ) {

const positionAttribute = geometry.attributes.position;
			const lineDistances = [ 0 ];

for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {

_start$1.fromBufferAttribute( positionAttribute, i - 1 );
				_end$1.fromBufferAttribute( positionAttribute, i );

lineDistances[ i ] = lineDistances[ i - 1 ];
				lineDistances[ i ] += _start$1.distanceTo( _end$1 );

}

geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

} else {

console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

}

return this;

}

raycast( raycaster, intersects ) {

const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Line.threshold;
		const drawRange = geometry.drawRange;

// Checking boundingSphere distance to ray

if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

_sphere$1.copy( geometry.boundingSphere );
		_sphere$1.applyMatrix4( matrixWorld );
		_sphere$1.radius += threshold;

if ( raycaster.ray.intersectsSphere( _sphere$1 ) === false ) return;

_inverseMatrix$1.copy( matrixWorld ).invert();
		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );

const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;

const vStart = new Vector3();
		const vEnd = new Vector3();
		const interSegment = new Vector3();
		const interRay = new Vector3();
		const step = this.isLineSegments ? 2 : 1;

const index = geometry.index;
		const attributes = geometry.attributes;
		const positionAttribute = attributes.position;

if ( index !== null ) {

const start = Math.max( 0, drawRange.start );
			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, l = end - 1; i < l; i += step ) {

const a = index.getX( i );
				const b = index.getX( i + 1 );

vStart.fromBufferAttribute( positionAttribute, a );
				vEnd.fromBufferAttribute( positionAttribute, b );

const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

if ( distSq > localThresholdSq ) continue;

interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

const distance = raycaster.ray.origin.distanceTo( interRay );

if ( distance < raycaster.near || distance > raycaster.far ) continue;

intersects.push( {

distance: distance,
					// What do we want? intersection point on the ray or on the segment??
					// point: raycaster.ray.at( distance ),
					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
					index: i,
					face: null,
					faceIndex: null,
					object: this

} );

}

} else {

const start = Math.max( 0, drawRange.start );
			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, l = end - 1; i < l; i += step ) {

vStart.fromBufferAttribute( positionAttribute, i );
				vEnd.fromBufferAttribute( positionAttribute, i + 1 );

const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

if ( distSq > localThresholdSq ) continue;

interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

const distance = raycaster.ray.origin.distanceTo( interRay );

if ( distance < raycaster.near || distance > raycaster.far ) continue;

intersects.push( {

} );

}

updateMorphTargets() {

const geometry = this.geometry;

const morphAttributes = geometry.morphAttributes;
		const keys = Object.keys( morphAttributes );

if ( keys.length > 0 ) {

const morphAttribute = morphAttributes[ keys[ 0 ] ];

if ( morphAttribute !== undefined ) {

this.morphTargetInfluences = [];
				this.morphTargetDictionary = {};

for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

const name = morphAttribute[ m ].name || String( m );

this.morphTargetInfluences.push( 0 );
					this.morphTargetDictionary[ name ] = m;

}

const _start = /*@__PURE__*/ new Vector3();
const _end = /*@__PURE__*/ new Vector3();

class LineSegments extends Line {

constructor( geometry, material ) {

super( geometry, material );

this.isLineSegments = true;

this.type = 'LineSegments';

}

computeLineDistances() {

const geometry = this.geometry;

// we assume non-indexed geometry

if ( geometry.index === null ) {

const positionAttribute = geometry.attributes.position;
			const lineDistances = [];

for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {

_start.fromBufferAttribute( positionAttribute, i );
				_end.fromBufferAttribute( positionAttribute, i + 1 );

lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
				lineDistances[ i + 1 ] = lineDistances[ i ] + _start.distanceTo( _end );

}

geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );

} else {

console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );

}

return this;

}

class LineLoop extends Line {

constructor( geometry, material ) {

super( geometry, material );

this.isLineLoop = true;

this.type = 'LineLoop';

}

class PointsMaterial extends Material {

constructor( parameters ) {

super();

this.isPointsMaterial = true;

this.type = 'PointsMaterial';

this.color = new Color( 0xffffff );

this.map = null;

this.alphaMap = null;

this.size = 1;
		this.sizeAttenuation = true;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;

this.alphaMap = source.alphaMap;

this.size = source.size;
		this.sizeAttenuation = source.sizeAttenuation;

this.fog = source.fog;

return this;

}

const _inverseMatrix = /*@__PURE__*/ new Matrix4();
const _ray = /*@__PURE__*/ new Ray();
const _sphere = /*@__PURE__*/ new Sphere();
const _position$2 = /*@__PURE__*/ new Vector3();

class Points extends Object3D {

constructor( geometry = new BufferGeometry(), material = new PointsMaterial() ) {

super();

this.isPoints = true;

this.type = 'Points';

this.geometry = geometry;
		this.material = material;

this.updateMorphTargets();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.material = source.material;
		this.geometry = source.geometry;

return this;

}

raycast( raycaster, intersects ) {

const geometry = this.geometry;
		const matrixWorld = this.matrixWorld;
		const threshold = raycaster.params.Points.threshold;
		const drawRange = geometry.drawRange;

// Checking boundingSphere distance to ray

if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

_sphere.copy( geometry.boundingSphere );
		_sphere.applyMatrix4( matrixWorld );
		_sphere.radius += threshold;

if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;

_inverseMatrix.copy( matrixWorld ).invert();
		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );

const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		const localThresholdSq = localThreshold * localThreshold;

const index = geometry.index;
		const attributes = geometry.attributes;
		const positionAttribute = attributes.position;

if ( index !== null ) {

const start = Math.max( 0, drawRange.start );
			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, il = end; i < il; i ++ ) {

const a = index.getX( i );

_position$2.fromBufferAttribute( positionAttribute, a );

testPoint( _position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this );

}

} else {

const start = Math.max( 0, drawRange.start );
			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

for ( let i = start, l = end; i < l; i ++ ) {

_position$2.fromBufferAttribute( positionAttribute, i );

testPoint( _position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this );

}

updateMorphTargets() {

const geometry = this.geometry;

const morphAttributes = geometry.morphAttributes;
		const keys = Object.keys( morphAttributes );

if ( keys.length > 0 ) {

const morphAttribute = morphAttributes[ keys[ 0 ] ];

if ( morphAttribute !== undefined ) {

this.morphTargetInfluences = [];
				this.morphTargetDictionary = {};

for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {

const name = morphAttribute[ m ].name || String( m );

this.morphTargetInfluences.push( 0 );
					this.morphTargetDictionary[ name ] = m;

}

function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {

const rayPointDistanceSq = _ray.distanceSqToPoint( point );

if ( rayPointDistanceSq < localThresholdSq ) {

const intersectPoint = new Vector3();

_ray.closestPointToPoint( point, intersectPoint );
		intersectPoint.applyMatrix4( matrixWorld );

const distance = raycaster.ray.origin.distanceTo( intersectPoint );

if ( distance < raycaster.near || distance > raycaster.far ) return;

intersects.push( {

distance: distance,
			distanceToRay: Math.sqrt( rayPointDistanceSq ),
			point: intersectPoint,
			index: index,
			face: null,
			object: object

} );

}

class VideoTexture extends Texture {

constructor( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

super( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

this.isVideoTexture = true;

this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;

this.generateMipmaps = false;

const scope = this;

function updateVideo() {

scope.needsUpdate = true;
			video.requestVideoFrameCallback( updateVideo );

}

if ( 'requestVideoFrameCallback' in video ) {

video.requestVideoFrameCallback( updateVideo );

}

clone() {

return new this.constructor( this.image ).copy( this );

}

update() {

const video = this.image;
		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;

if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {

this.needsUpdate = true;

}

class FramebufferTexture extends Texture {

constructor( width, height, format ) {

super( { width, height } );

this.isFramebufferTexture = true;

this.format = format;

this.magFilter = NearestFilter;
		this.minFilter = NearestFilter;

this.generateMipmaps = false;

this.needsUpdate = true;

}

class CompressedTexture extends Texture {

constructor( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {

super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );

this.isCompressedTexture = true;

this.image = { width: width, height: height };
		this.mipmaps = mipmaps;

// no flipping for cube textures
		// (also flipping doesn't work for compressed textures )

this.flipY = false;

// can't generate mipmaps for compressed textures
		// mips must be embedded in DDS files

this.generateMipmaps = false;

}

class CompressedArrayTexture extends CompressedTexture {

constructor( mipmaps, width, height, depth, format, type ) {

super( mipmaps, width, height, format, type );

this.isCompressedArrayTexture = true;
		this.image.depth = depth;
		this.wrapR = ClampToEdgeWrapping;

}

class CanvasTexture extends Texture {

constructor( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

super( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

this.isCanvasTexture = true;

this.needsUpdate = true;

}

/**
 * Extensible curve object.
 *
 * Some common of curve methods:
 * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
 * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
 * .getPoints(), .getSpacedPoints()
 * .getLength()
 * .updateArcLengths()
 *
 * This following curves inherit from THREE.Curve:
 *
 * -- 2D curves --
 * THREE.ArcCurve
 * THREE.CubicBezierCurve
 * THREE.EllipseCurve
 * THREE.LineCurve
 * THREE.QuadraticBezierCurve
 * THREE.SplineCurve
 *
 * -- 3D curves --
 * THREE.CatmullRomCurve3
 * THREE.CubicBezierCurve3
 * THREE.LineCurve3
 * THREE.QuadraticBezierCurve3
 *
 * A series of curves can be represented as a THREE.CurvePath.
 *
 **/

class Curve {

constructor() {

this.type = 'Curve';

this.arcLengthDivisions = 200;

}

// Virtual base class method to overwrite and implement in subclasses
	//	- t [0 .. 1]

getPoint( /* t, optionalTarget */ ) {

console.warn( 'THREE.Curve: .getPoint() not implemented.' );
		return null;

}

// Get point at relative position in curve according to arc length
	// - u [0 .. 1]

getPointAt( u, optionalTarget ) {

const t = this.getUtoTmapping( u );
		return this.getPoint( t, optionalTarget );

}

// Get sequence of points using getPoint( t )

getPoints( divisions = 5 ) {

const points = [];

for ( let d = 0; d <= divisions; d ++ ) {

points.push( this.getPoint( d / divisions ) );

}

return points;

}

// Get sequence of points using getPointAt( u )

getSpacedPoints( divisions = 5 ) {

const points = [];

for ( let d = 0; d <= divisions; d ++ ) {

points.push( this.getPointAt( d / divisions ) );

}

return points;

}

// Get total curve arc length

getLength() {

const lengths = this.getLengths();
		return lengths[ lengths.length - 1 ];

}

// Get list of cumulative segment lengths

getLengths( divisions = this.arcLengthDivisions ) {

if ( this.cacheArcLengths &&
			( this.cacheArcLengths.length === divisions + 1 ) &&
			! this.needsUpdate ) {

return this.cacheArcLengths;

}

this.needsUpdate = false;

const cache = [];
		let current, last = this.getPoint( 0 );
		let sum = 0;

cache.push( 0 );

for ( let p = 1; p <= divisions; p ++ ) {

current = this.getPoint( p / divisions );
			sum += current.distanceTo( last );
			cache.push( sum );
			last = current;

}

this.cacheArcLengths = cache;

return cache; // { sums: cache, sum: sum }; Sum is in the last element.

}

updateArcLengths() {

this.needsUpdate = true;
		this.getLengths();

}

// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant

getUtoTmapping( u, distance ) {

const arcLengths = this.getLengths();

let i = 0;
		const il = arcLengths.length;

let targetArcLength; // The targeted u distance value to get

if ( distance ) {

targetArcLength = distance;

} else {

targetArcLength = u * arcLengths[ il - 1 ];

}

// binary search for the index with largest value smaller than target u distance

let low = 0, high = il - 1, comparison;

while ( low <= high ) {

i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats

comparison = arcLengths[ i ] - targetArcLength;

if ( comparison < 0 ) {

low = i + 1;

} else if ( comparison > 0 ) {

high = i - 1;

} else {

high = i;
				break;

// DONE

}

i = high;

if ( arcLengths[ i ] === targetArcLength ) {

return i / ( il - 1 );

}

// we could get finer grain at lengths, or use simple interpolation between two points

const lengthBefore = arcLengths[ i ];
		const lengthAfter = arcLengths[ i + 1 ];

const segmentLength = lengthAfter - lengthBefore;

// determine where we are between the 'before' and 'after' points

const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;

// add that fractional amount to t

const t = ( i + segmentFraction ) / ( il - 1 );

return t;

}

// Returns a unit vector tangent at t
	// In case any sub curve does not implement its tangent derivation,
	// 2 points a small delta apart will be used to find its gradient
	// which seems to give a reasonable approximation

getTangent( t, optionalTarget ) {

const delta = 0.0001;
		let t1 = t - delta;
		let t2 = t + delta;

// Capping in case of danger

if ( t1 < 0 ) t1 = 0;
		if ( t2 > 1 ) t2 = 1;

const pt1 = this.getPoint( t1 );
		const pt2 = this.getPoint( t2 );

const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );

tangent.copy( pt2 ).sub( pt1 ).normalize();

return tangent;

}

getTangentAt( u, optionalTarget ) {

const t = this.getUtoTmapping( u );
		return this.getTangent( t, optionalTarget );

}

computeFrenetFrames( segments, closed ) {

// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf

const normal = new Vector3();

const tangents = [];
		const normals = [];
		const binormals = [];

const vec = new Vector3();
		const mat = new Matrix4();

// compute the tangent vectors for each segment on the curve

for ( let i = 0; i <= segments; i ++ ) {

const u = i / segments;

tangents[ i ] = this.getTangentAt( u, new Vector3() );

}

// select an initial normal vector perpendicular to the first tangent vector,
		// and in the direction of the minimum tangent xyz component

normals[ 0 ] = new Vector3();
		binormals[ 0 ] = new Vector3();
		let min = Number.MAX_VALUE;
		const tx = Math.abs( tangents[ 0 ].x );
		const ty = Math.abs( tangents[ 0 ].y );
		const tz = Math.abs( tangents[ 0 ].z );

if ( tx <= min ) {

min = tx;
			normal.set( 1, 0, 0 );

}

if ( ty <= min ) {

min = ty;
			normal.set( 0, 1, 0 );

}

if ( tz <= min ) {

normal.set( 0, 0, 1 );

}

vec.crossVectors( tangents[ 0 ], normal ).normalize();

normals[ 0 ].crossVectors( tangents[ 0 ], vec );
		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );

// compute the slowly-varying normal and binormal vectors for each segment on the curve

for ( let i = 1; i <= segments; i ++ ) {

normals[ i ] = normals[ i - 1 ].clone();

binormals[ i ] = binormals[ i - 1 ].clone();

vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );

if ( vec.length() > Number.EPSILON ) {

vec.normalize();

const theta = Math.acos( clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors

normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );

}

binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

}

// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same

if ( closed === true ) {

let theta = Math.acos( clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
			theta /= segments;

if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {

theta = - theta;

}

for ( let i = 1; i <= segments; i ++ ) {

// twist a little...
				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );

}

return {
			tangents: tangents,
			normals: normals,
			binormals: binormals
		};

}

clone() {

return new this.constructor().copy( this );

}

copy( source ) {

this.arcLengthDivisions = source.arcLengthDivisions;

return this;

}

toJSON() {

const data = {
			metadata: {
				version: 4.5,
				type: 'Curve',
				generator: 'Curve.toJSON'
			}
		};

data.arcLengthDivisions = this.arcLengthDivisions;
		data.type = this.type;

return data;

}

fromJSON( json ) {

this.arcLengthDivisions = json.arcLengthDivisions;

return this;

}

class EllipseCurve extends Curve {

constructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {

super();

this.isEllipseCurve = true;

this.type = 'EllipseCurve';

this.aX = aX;
		this.aY = aY;

this.xRadius = xRadius;
		this.yRadius = yRadius;

this.aStartAngle = aStartAngle;
		this.aEndAngle = aEndAngle;

this.aClockwise = aClockwise;

this.aRotation = aRotation;

}

getPoint( t, optionalTarget ) {

const point = optionalTarget || new Vector2();

const twoPi = Math.PI * 2;
		let deltaAngle = this.aEndAngle - this.aStartAngle;
		const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;

// ensures that deltaAngle is 0 .. 2 PI
		while ( deltaAngle < 0 ) deltaAngle += twoPi;
		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;

if ( deltaAngle < Number.EPSILON ) {

if ( samePoints ) {

deltaAngle = 0;

} else {

deltaAngle = twoPi;

}

if ( this.aClockwise === true && ! samePoints ) {

if ( deltaAngle === twoPi ) {

deltaAngle = - twoPi;

} else {

deltaAngle = deltaAngle - twoPi;

}

const angle = this.aStartAngle + t * deltaAngle;
		let x = this.aX + this.xRadius * Math.cos( angle );
		let y = this.aY + this.yRadius * Math.sin( angle );

if ( this.aRotation !== 0 ) {

const cos = Math.cos( this.aRotation );
			const sin = Math.sin( this.aRotation );

const tx = x - this.aX;
			const ty = y - this.aY;

// Rotate the point about the center of the ellipse.
			x = tx * cos - ty * sin + this.aX;
			y = tx * sin + ty * cos + this.aY;

}

return point.set( x, y );

}

copy( source ) {

super.copy( source );

this.aX = source.aX;
		this.aY = source.aY;

this.xRadius = source.xRadius;
		this.yRadius = source.yRadius;

this.aStartAngle = source.aStartAngle;
		this.aEndAngle = source.aEndAngle;

this.aClockwise = source.aClockwise;

this.aRotation = source.aRotation;

return this;

}

toJSON() {

const data = super.toJSON();

data.aX = this.aX;
		data.aY = this.aY;

data.xRadius = this.xRadius;
		data.yRadius = this.yRadius;

data.aStartAngle = this.aStartAngle;
		data.aEndAngle = this.aEndAngle;

data.aClockwise = this.aClockwise;

data.aRotation = this.aRotation;

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.aX = json.aX;
		this.aY = json.aY;

this.xRadius = json.xRadius;
		this.yRadius = json.yRadius;

this.aStartAngle = json.aStartAngle;
		this.aEndAngle = json.aEndAngle;

this.aClockwise = json.aClockwise;

this.aRotation = json.aRotation;

return this;

}

class ArcCurve extends EllipseCurve {

constructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

super( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

this.isArcCurve = true;

this.type = 'ArcCurve';

}

/**
 * Centripetal CatmullRom Curve - which is useful for avoiding
 * cusps and self-intersections in non-uniform catmull rom curves.
 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
 *
 * curve.type accepts centripetal(default), chordal and catmullrom
 * curve.tension is used for catmullrom which defaults to 0.5
 */

/*
Based on an optimized c++ solution in
 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
 - http://ideone.com/NoEbVM

This CubicPoly class could be used for reusing some variables and calculations,
but for three.js curve use, it could be possible inlined and flatten into a single function call
which can be placed in CurveUtils.
*/

function CubicPoly() {

let c0 = 0, c1 = 0, c2 = 0, c3 = 0;

/*
	 * Compute coefficients for a cubic polynomial
	 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
	 * such that
	 *   p(0) = x0, p(1) = x1
	 *  and
	 *   p'(0) = t0, p'(1) = t1.
	 */
	function init( x0, x1, t0, t1 ) {

c0 = x0;
		c1 = t0;
		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
		c3 = 2 * x0 - 2 * x1 + t0 + t1;

}

return {

initCatmullRom: function ( x0, x1, x2, x3, tension ) {

init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );

initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {

// compute tangents when parameterized in [t1,t2]
			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;

// rescale tangents for parametrization in [0,1]
			t1 *= dt1;
			t2 *= dt1;

init( x1, x2, t1, t2 );

calc: function ( t ) {

const t2 = t * t;
			const t3 = t2 * t;
			return c0 + c1 * t + c2 * t2 + c3 * t3;

}

};

}

const tmp = /*@__PURE__*/ new Vector3();
const px = /*@__PURE__*/ new CubicPoly();
const py = /*@__PURE__*/ new CubicPoly();
const pz = /*@__PURE__*/ new CubicPoly();

class CatmullRomCurve3 extends Curve {

constructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {

super();

this.isCatmullRomCurve3 = true;

this.type = 'CatmullRomCurve3';

this.points = points;
		this.closed = closed;
		this.curveType = curveType;
		this.tension = tension;

}

getPoint( t, optionalTarget = new Vector3() ) {

const point = optionalTarget;

const points = this.points;
		const l = points.length;

const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
		let intPoint = Math.floor( p );
		let weight = p - intPoint;

if ( this.closed ) {

intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;

} else if ( weight === 0 && intPoint === l - 1 ) {

intPoint = l - 2;
			weight = 1;

}

let p0, p3; // 4 points (p1 & p2 defined below)

if ( this.closed || intPoint > 0 ) {

p0 = points[ ( intPoint - 1 ) % l ];

} else {

// extrapolate first point
			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
			p0 = tmp;

}

const p1 = points[ intPoint % l ];
		const p2 = points[ ( intPoint + 1 ) % l ];

if ( this.closed || intPoint + 2 < l ) {

p3 = points[ ( intPoint + 2 ) % l ];

} else {

// extrapolate last point
			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
			p3 = tmp;

}

if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {

// init Centripetal / Chordal Catmull-Rom
			const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
			let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
			let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
			let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );

// safety check for repeated points
			if ( dt1 < 1e-4 ) dt1 = 1.0;
			if ( dt0 < 1e-4 ) dt0 = dt1;
			if ( dt2 < 1e-4 ) dt2 = dt1;

px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );

} else if ( this.curveType === 'catmullrom' ) {

px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );

}

point.set(
			px.calc( weight ),
			py.calc( weight ),
			pz.calc( weight )
		);

return point;

}

copy( source ) {

super.copy( source );

this.points = [];

for ( let i = 0, l = source.points.length; i < l; i ++ ) {

const point = source.points[ i ];

this.points.push( point.clone() );

}

this.closed = source.closed;
		this.curveType = source.curveType;
		this.tension = source.tension;

return this;

}

toJSON() {

const data = super.toJSON();

data.points = [];

for ( let i = 0, l = this.points.length; i < l; i ++ ) {

const point = this.points[ i ];
			data.points.push( point.toArray() );

}

data.closed = this.closed;
		data.curveType = this.curveType;
		data.tension = this.tension;

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.points = [];

for ( let i = 0, l = json.points.length; i < l; i ++ ) {

const point = json.points[ i ];
			this.points.push( new Vector3().fromArray( point ) );

}

this.closed = json.closed;
		this.curveType = json.curveType;
		this.tension = json.tension;

return this;

}

/**
 * Bezier Curves formulas obtained from
 * https://en.wikipedia.org/wiki/B%C3%A9zier_curve
 */

function CatmullRom( t, p0, p1, p2, p3 ) {

const v0 = ( p2 - p0 ) * 0.5;
	const v1 = ( p3 - p1 ) * 0.5;
	const t2 = t * t;
	const t3 = t * t2;
	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;

}

function QuadraticBezierP0( t, p ) {

const k = 1 - t;
	return k * k * p;

}

function QuadraticBezierP1( t, p ) {

return 2 * ( 1 - t ) * t * p;

}

function QuadraticBezierP2( t, p ) {

return t * t * p;

}

function QuadraticBezier( t, p0, p1, p2 ) {

return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
		QuadraticBezierP2( t, p2 );

}

function CubicBezierP0( t, p ) {

const k = 1 - t;
	return k * k * k * p;

}

function CubicBezierP1( t, p ) {

const k = 1 - t;
	return 3 * k * k * t * p;

}

function CubicBezierP2( t, p ) {

return 3 * ( 1 - t ) * t * t * p;

}

function CubicBezierP3( t, p ) {

return t * t * t * p;

}

function CubicBezier( t, p0, p1, p2, p3 ) {

return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
		CubicBezierP3( t, p3 );

}

class CubicBezierCurve extends Curve {

constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {

super();

this.isCubicBezierCurve = true;

this.type = 'CubicBezierCurve';

this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;
		this.v3 = v3;

}

getPoint( t, optionalTarget = new Vector2() ) {

const point = optionalTarget;

const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

point.set(
			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
		);

return point;

}

copy( source ) {

super.copy( source );

this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );
		this.v3.copy( source.v3 );

return this;

}

toJSON() {

const data = super.toJSON();

data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();
		data.v3 = this.v3.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );
		this.v3.fromArray( json.v3 );

return this;

}

class CubicBezierCurve3 extends Curve {

constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {

super();

this.isCubicBezierCurve3 = true;

this.type = 'CubicBezierCurve3';

this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;
		this.v3 = v3;

}

getPoint( t, optionalTarget = new Vector3() ) {

const point = optionalTarget;

const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;

point.set(
			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
		);

return point;

}

copy( source ) {

super.copy( source );

this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );
		this.v3.copy( source.v3 );

return this;

}

toJSON() {

const data = super.toJSON();

data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();
		data.v3 = this.v3.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );
		this.v3.fromArray( json.v3 );

return this;

}

class LineCurve extends Curve {

constructor( v1 = new Vector2(), v2 = new Vector2() ) {

super();

this.isLineCurve = true;

this.type = 'LineCurve';

this.v1 = v1;
		this.v2 = v2;

}

getPoint( t, optionalTarget = new Vector2() ) {

const point = optionalTarget;

if ( t === 1 ) {

point.copy( this.v2 );

} else {

point.copy( this.v2 ).sub( this.v1 );
			point.multiplyScalar( t ).add( this.v1 );

}

return point;

}

// Line curve is linear, so we can overwrite default getPointAt
	getPointAt( u, optionalTarget ) {

return this.getPoint( u, optionalTarget );

}

getTangent( t, optionalTarget = new Vector2() ) {

return optionalTarget.subVectors( this.v2, this.v1 ).normalize();

}

getTangentAt( u, optionalTarget ) {

return this.getTangent( u, optionalTarget );

}

copy( source ) {

super.copy( source );

this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

return this;

}

toJSON() {

const data = super.toJSON();

data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

return this;

}

class LineCurve3 extends Curve {

constructor( v1 = new Vector3(), v2 = new Vector3() ) {

super();

this.isLineCurve3 = true;

this.type = 'LineCurve3';

this.v1 = v1;
		this.v2 = v2;

}
	getPoint( t, optionalTarget = new Vector3() ) {

const point = optionalTarget;

if ( t === 1 ) {

point.copy( this.v2 );

} else {

point.copy( this.v2 ).sub( this.v1 );
			point.multiplyScalar( t ).add( this.v1 );

}

return point;

}
	// Line curve is linear, so we can overwrite default getPointAt
	getPointAt( u, optionalTarget ) {

return this.getPoint( u, optionalTarget );

}

getTangent( t, optionalTarget = new Vector3() ) {

return optionalTarget.subVectors( this.v2, this.v1 ).normalize();

}

getTangentAt( u, optionalTarget ) {

return this.getTangent( u, optionalTarget );

}

copy( source ) {

super.copy( source );

this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

return this;

}
	toJSON() {

const data = super.toJSON();

data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

return data;

}
	fromJSON( json ) {

super.fromJSON( json );

this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

return this;

}

class QuadraticBezierCurve extends Curve {

constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {

super();

this.isQuadraticBezierCurve = true;

this.type = 'QuadraticBezierCurve';

this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;

}

getPoint( t, optionalTarget = new Vector2() ) {

const point = optionalTarget;

const v0 = this.v0, v1 = this.v1, v2 = this.v2;

point.set(
			QuadraticBezier( t, v0.x, v1.x, v2.x ),
			QuadraticBezier( t, v0.y, v1.y, v2.y )
		);

return point;

}

copy( source ) {

super.copy( source );

this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

return this;

}

toJSON() {

const data = super.toJSON();

data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

return this;

}

class QuadraticBezierCurve3 extends Curve {

constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {

super();

this.isQuadraticBezierCurve3 = true;

this.type = 'QuadraticBezierCurve3';

this.v0 = v0;
		this.v1 = v1;
		this.v2 = v2;

}

getPoint( t, optionalTarget = new Vector3() ) {

const point = optionalTarget;

const v0 = this.v0, v1 = this.v1, v2 = this.v2;

point.set(
			QuadraticBezier( t, v0.x, v1.x, v2.x ),
			QuadraticBezier( t, v0.y, v1.y, v2.y ),
			QuadraticBezier( t, v0.z, v1.z, v2.z )
		);

return point;

}

copy( source ) {

super.copy( source );

this.v0.copy( source.v0 );
		this.v1.copy( source.v1 );
		this.v2.copy( source.v2 );

return this;

}

toJSON() {

const data = super.toJSON();

data.v0 = this.v0.toArray();
		data.v1 = this.v1.toArray();
		data.v2 = this.v2.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.v0.fromArray( json.v0 );
		this.v1.fromArray( json.v1 );
		this.v2.fromArray( json.v2 );

return this;

}

class SplineCurve extends Curve {

constructor( points = [] ) {

super();

this.isSplineCurve = true;

this.type = 'SplineCurve';

this.points = points;

}

getPoint( t, optionalTarget = new Vector2() ) {

const point = optionalTarget;

const points = this.points;
		const p = ( points.length - 1 ) * t;

const intPoint = Math.floor( p );
		const weight = p - intPoint;

const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
		const p1 = points[ intPoint ];
		const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
		const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];

point.set(
			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
		);

return point;

}

copy( source ) {

super.copy( source );

this.points = [];

for ( let i = 0, l = source.points.length; i < l; i ++ ) {

const point = source.points[ i ];

this.points.push( point.clone() );

}

return this;

}

toJSON() {

const data = super.toJSON();

data.points = [];

for ( let i = 0, l = this.points.length; i < l; i ++ ) {

const point = this.points[ i ];
			data.points.push( point.toArray() );

}

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.points = [];

for ( let i = 0, l = json.points.length; i < l; i ++ ) {

const point = json.points[ i ];
			this.points.push( new Vector2().fromArray( point ) );

}

return this;

}

var Curves = /*#__PURE__*/Object.freeze({
	__proto__: null,
	ArcCurve: ArcCurve,
	CatmullRomCurve3: CatmullRomCurve3,
	CubicBezierCurve: CubicBezierCurve,
	CubicBezierCurve3: CubicBezierCurve3,
	EllipseCurve: EllipseCurve,
	LineCurve: LineCurve,
	LineCurve3: LineCurve3,
	QuadraticBezierCurve: QuadraticBezierCurve,
	QuadraticBezierCurve3: QuadraticBezierCurve3,
	SplineCurve: SplineCurve
});

/**************************************************************
 *	Curved Path - a curve path is simply a array of connected
 *  curves, but retains the api of a curve
 **************************************************************/

class CurvePath extends Curve {

constructor() {

super();

this.type = 'CurvePath';

this.curves = [];
		this.autoClose = false; // Automatically closes the path

}

add( curve ) {

this.curves.push( curve );

}

closePath() {

// Add a line curve if start and end of lines are not connected
		const startPoint = this.curves[ 0 ].getPoint( 0 );
		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );

if ( ! startPoint.equals( endPoint ) ) {

this.curves.push( new LineCurve( endPoint, startPoint ) );

}

// To get accurate point with reference to
	// entire path distance at time t,
	// following has to be done:

// 1. Length of each sub path have to be known
	// 2. Locate and identify type of curve
	// 3. Get t for the curve
	// 4. Return curve.getPointAt(t')

getPoint( t, optionalTarget ) {

const d = t * this.getLength();
		const curveLengths = this.getCurveLengths();
		let i = 0;

// To think about boundaries points.

while ( i < curveLengths.length ) {

if ( curveLengths[ i ] >= d ) {

const diff = curveLengths[ i ] - d;
				const curve = this.curves[ i ];

const segmentLength = curve.getLength();
				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;

return curve.getPointAt( u, optionalTarget );

}

i ++;

}

return null;

// loop where sum != 0, sum > d , sum+1 <d

}

// We cannot use the default THREE.Curve getPoint() with getLength() because in
	// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
	// getPoint() depends on getLength

getLength() {

const lens = this.getCurveLengths();
		return lens[ lens.length - 1 ];

}

// cacheLengths must be recalculated.
	updateArcLengths() {

this.needsUpdate = true;
		this.cacheLengths = null;
		this.getCurveLengths();

}

// Compute lengths and cache them
	// We cannot overwrite getLengths() because UtoT mapping uses it.

getCurveLengths() {

// We use cache values if curves and cache array are same length

if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {

return this.cacheLengths;

}

// Get length of sub-curve
		// Push sums into cached array

const lengths = [];
		let sums = 0;

for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

sums += this.curves[ i ].getLength();
			lengths.push( sums );

}

this.cacheLengths = lengths;

return lengths;

}

getSpacedPoints( divisions = 40 ) {

const points = [];

for ( let i = 0; i <= divisions; i ++ ) {

points.push( this.getPoint( i / divisions ) );

}

if ( this.autoClose ) {

points.push( points[ 0 ] );

}

return points;

}

getPoints( divisions = 12 ) {

const points = [];
		let last;

for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {

const curve = curves[ i ];
			const resolution = curve.isEllipseCurve ? divisions * 2
				: ( curve.isLineCurve || curve.isLineCurve3 ) ? 1
					: curve.isSplineCurve ? divisions * curve.points.length
						: divisions;

const pts = curve.getPoints( resolution );

for ( let j = 0; j < pts.length; j ++ ) {

const point = pts[ j ];

if ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates

points.push( point );
				last = point;

}

if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {

points.push( points[ 0 ] );

}

return points;

}

copy( source ) {

super.copy( source );

this.curves = [];

for ( let i = 0, l = source.curves.length; i < l; i ++ ) {

const curve = source.curves[ i ];

this.curves.push( curve.clone() );

}

this.autoClose = source.autoClose;

return this;

}

toJSON() {

const data = super.toJSON();

data.autoClose = this.autoClose;
		data.curves = [];

for ( let i = 0, l = this.curves.length; i < l; i ++ ) {

const curve = this.curves[ i ];
			data.curves.push( curve.toJSON() );

}

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.autoClose = json.autoClose;
		this.curves = [];

for ( let i = 0, l = json.curves.length; i < l; i ++ ) {

const curve = json.curves[ i ];
			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );

}

return this;

}

class Path extends CurvePath {

constructor( points ) {

super();

this.type = 'Path';

this.currentPoint = new Vector2();

if ( points ) {

this.setFromPoints( points );

}

setFromPoints( points ) {

this.moveTo( points[ 0 ].x, points[ 0 ].y );

for ( let i = 1, l = points.length; i < l; i ++ ) {

this.lineTo( points[ i ].x, points[ i ].y );

}

return this;

}

moveTo( x, y ) {

this.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?

return this;

}

lineTo( x, y ) {

const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
		this.curves.push( curve );

this.currentPoint.set( x, y );

return this;

}

quadraticCurveTo( aCPx, aCPy, aX, aY ) {

const curve = new QuadraticBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCPx, aCPy ),
			new Vector2( aX, aY )
		);

this.curves.push( curve );

this.currentPoint.set( aX, aY );

return this;

}

bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

const curve = new CubicBezierCurve(
			this.currentPoint.clone(),
			new Vector2( aCP1x, aCP1y ),
			new Vector2( aCP2x, aCP2y ),
			new Vector2( aX, aY )
		);

this.curves.push( curve );

this.currentPoint.set( aX, aY );

return this;

}

splineThru( pts /*Array of Vector*/ ) {

const npts = [ this.currentPoint.clone() ].concat( pts );

const curve = new SplineCurve( npts );
		this.curves.push( curve );

this.currentPoint.copy( pts[ pts.length - 1 ] );

return this;

}

arc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;

this.absarc( aX + x0, aY + y0, aRadius,
			aStartAngle, aEndAngle, aClockwise );

return this;

}

absarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {

this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );

return this;

}

ellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

const x0 = this.currentPoint.x;
		const y0 = this.currentPoint.y;

this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

return this;

}

absellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {

const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );

if ( this.curves.length > 0 ) {

// if a previous curve is present, attempt to join
			const firstPoint = curve.getPoint( 0 );

if ( ! firstPoint.equals( this.currentPoint ) ) {

this.lineTo( firstPoint.x, firstPoint.y );

}

this.curves.push( curve );

const lastPoint = curve.getPoint( 1 );
		this.currentPoint.copy( lastPoint );

return this;

}

copy( source ) {

super.copy( source );

this.currentPoint.copy( source.currentPoint );

return this;

}

toJSON() {

const data = super.toJSON();

data.currentPoint = this.currentPoint.toArray();

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.currentPoint.fromArray( json.currentPoint );

return this;

}

class LatheGeometry extends BufferGeometry {

constructor( points = [ new Vector2( 0, - 0.5 ), new Vector2( 0.5, 0 ), new Vector2( 0, 0.5 ) ], segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {

super();

this.type = 'LatheGeometry';

this.parameters = {
			points: points,
			segments: segments,
			phiStart: phiStart,
			phiLength: phiLength
		};

segments = Math.floor( segments );

// clamp phiLength so it's in range of [ 0, 2PI ]

phiLength = clamp( phiLength, 0, Math.PI * 2 );

// buffers

const indices = [];
		const vertices = [];
		const uvs = [];
		const initNormals = [];
		const normals = [];

// helper variables

const inverseSegments = 1.0 / segments;
		const vertex = new Vector3();
		const uv = new Vector2();
		const normal = new Vector3();
		const curNormal = new Vector3();
		const prevNormal = new Vector3();
		let dx = 0;
		let dy = 0;

// pre-compute normals for initial "meridian"

for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

switch ( j ) {

case 0:				// special handling for 1st vertex on path

dx = points[ j + 1 ].x - points[ j ].x;
					dy = points[ j + 1 ].y - points[ j ].y;

normal.x = dy * 1.0;
					normal.y = - dx;
					normal.z = dy * 0.0;

prevNormal.copy( normal );

normal.normalize();

initNormals.push( normal.x, normal.y, normal.z );

break;

case ( points.length - 1 ):	// special handling for last Vertex on path

initNormals.push( prevNormal.x, prevNormal.y, prevNormal.z );

break;

default:			// default handling for all vertices in between

dx = points[ j + 1 ].x - points[ j ].x;
					dy = points[ j + 1 ].y - points[ j ].y;

normal.x = dy * 1.0;
					normal.y = - dx;
					normal.z = dy * 0.0;

curNormal.copy( normal );

normal.x += prevNormal.x;
					normal.y += prevNormal.y;
					normal.z += prevNormal.z;

normal.normalize();

initNormals.push( normal.x, normal.y, normal.z );

prevNormal.copy( curNormal );

}

// generate vertices, uvs and normals

for ( let i = 0; i <= segments; i ++ ) {

const phi = phiStart + i * inverseSegments * phiLength;

const sin = Math.sin( phi );
			const cos = Math.cos( phi );

for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {

// vertex

vertex.x = points[ j ].x * sin;
				vertex.y = points[ j ].y;
				vertex.z = points[ j ].x * cos;

vertices.push( vertex.x, vertex.y, vertex.z );

// uv

uv.x = i / segments;
				uv.y = j / ( points.length - 1 );

uvs.push( uv.x, uv.y );

// normal

const x = initNormals[ 3 * j + 0 ] * sin;
				const y = initNormals[ 3 * j + 1 ];
				const z = initNormals[ 3 * j + 0 ] * cos;

normals.push( x, y, z );

}

// indices

for ( let i = 0; i < segments; i ++ ) {

for ( let j = 0; j < ( points.length - 1 ); j ++ ) {

const base = j + i * points.length;

const a = base;
				const b = base + points.length;
				const c = base + points.length + 1;
				const d = base + 1;

// faces

indices.push( a, b, d );
				indices.push( c, d, b );

}

// build geometry

this.setIndex( indices );
		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new LatheGeometry( data.points, data.segments, data.phiStart, data.phiLength );

}

class CapsuleGeometry extends LatheGeometry {

constructor( radius = 1, length = 1, capSegments = 4, radialSegments = 8 ) {

const path = new Path();
		path.absarc( 0, - length / 2, radius, Math.PI * 1.5, 0 );
		path.absarc( 0, length / 2, radius, 0, Math.PI * 0.5 );

super( path.getPoints( capSegments ), radialSegments );

this.type = 'CapsuleGeometry';

this.parameters = {
			radius: radius,
			height: length,
			capSegments: capSegments,
			radialSegments: radialSegments,
		};

}

static fromJSON( data ) {

return new CapsuleGeometry( data.radius, data.length, data.capSegments, data.radialSegments );

}

class CircleGeometry extends BufferGeometry {

constructor( radius = 1, segments = 32, thetaStart = 0, thetaLength = Math.PI * 2 ) {

super();

this.type = 'CircleGeometry';

this.parameters = {
			radius: radius,
			segments: segments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

segments = Math.max( 3, segments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

const vertex = new Vector3();
		const uv = new Vector2();

// center point

vertices.push( 0, 0, 0 );
		normals.push( 0, 0, 1 );
		uvs.push( 0.5, 0.5 );

for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {

const segment = thetaStart + s / segments * thetaLength;

// vertex

vertex.x = radius * Math.cos( segment );
			vertex.y = radius * Math.sin( segment );

vertices.push( vertex.x, vertex.y, vertex.z );

// normal

normals.push( 0, 0, 1 );

// uvs

uv.x = ( vertices[ i ] / radius + 1 ) / 2;
			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;

uvs.push( uv.x, uv.y );

}

// indices

for ( let i = 1; i <= segments; i ++ ) {

indices.push( i, i + 1, 0 );

}

// build geometry

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new CircleGeometry( data.radius, data.segments, data.thetaStart, data.thetaLength );

}

class CylinderGeometry extends BufferGeometry {

constructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

super();

this.type = 'CylinderGeometry';

this.parameters = {
			radiusTop: radiusTop,
			radiusBottom: radiusBottom,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

const scope = this;

radialSegments = Math.floor( radialSegments );
		heightSegments = Math.floor( heightSegments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

let index = 0;
		const indexArray = [];
		const halfHeight = height / 2;
		let groupStart = 0;

// generate geometry

generateTorso();

if ( openEnded === false ) {

if ( radiusTop > 0 ) generateCap( true );
			if ( radiusBottom > 0 ) generateCap( false );

}

// build geometry

function generateTorso() {

const normal = new Vector3();
			const vertex = new Vector3();

let groupCount = 0;

// this will be used to calculate the normal
			const slope = ( radiusBottom - radiusTop ) / height;

// generate vertices, normals and uvs

for ( let y = 0; y <= heightSegments; y ++ ) {

const indexRow = [];

const v = y / heightSegments;

// calculate the radius of the current row

const radius = v * ( radiusBottom - radiusTop ) + radiusTop;

for ( let x = 0; x <= radialSegments; x ++ ) {

const u = x / radialSegments;

const theta = u * thetaLength + thetaStart;

const sinTheta = Math.sin( theta );
					const cosTheta = Math.cos( theta );

// vertex

vertex.x = radius * sinTheta;
					vertex.y = - v * height + halfHeight;
					vertex.z = radius * cosTheta;
					vertices.push( vertex.x, vertex.y, vertex.z );

// normal

normal.set( sinTheta, slope, cosTheta ).normalize();
					normals.push( normal.x, normal.y, normal.z );

// uv

uvs.push( u, 1 - v );

// save index of vertex in respective row

indexRow.push( index ++ );

}

// now save vertices of the row in our index array

indexArray.push( indexRow );

}

// generate indices

for ( let x = 0; x < radialSegments; x ++ ) {

for ( let y = 0; y < heightSegments; y ++ ) {

// we use the index array to access the correct indices

const a = indexArray[ y ][ x ];
					const b = indexArray[ y + 1 ][ x ];
					const c = indexArray[ y + 1 ][ x + 1 ];
					const d = indexArray[ y ][ x + 1 ];

// faces

indices.push( a, b, d );
					indices.push( b, c, d );

// update group counter

groupCount += 6;

}

// add a group to the geometry. this will ensure multi material support

scope.addGroup( groupStart, groupCount, 0 );

// calculate new start value for groups

groupStart += groupCount;

}

function generateCap( top ) {

// save the index of the first center vertex
			const centerIndexStart = index;

const uv = new Vector2();
			const vertex = new Vector3();

let groupCount = 0;

const radius = ( top === true ) ? radiusTop : radiusBottom;
			const sign = ( top === true ) ? 1 : - 1;

// first we generate the center vertex data of the cap.
			// because the geometry needs one set of uvs per face,
			// we must generate a center vertex per face/segment

for ( let x = 1; x <= radialSegments; x ++ ) {

// vertex

vertices.push( 0, halfHeight * sign, 0 );

// normal

normals.push( 0, sign, 0 );

// uv

uvs.push( 0.5, 0.5 );

// increase index

index ++;

}

// save the index of the last center vertex
			const centerIndexEnd = index;

// now we generate the surrounding vertices, normals and uvs

for ( let x = 0; x <= radialSegments; x ++ ) {

const u = x / radialSegments;
				const theta = u * thetaLength + thetaStart;

const cosTheta = Math.cos( theta );
				const sinTheta = Math.sin( theta );

// vertex

vertex.x = radius * sinTheta;
				vertex.y = halfHeight * sign;
				vertex.z = radius * cosTheta;
				vertices.push( vertex.x, vertex.y, vertex.z );

// normal

normals.push( 0, sign, 0 );

// uv

uv.x = ( cosTheta * 0.5 ) + 0.5;
				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
				uvs.push( uv.x, uv.y );

// increase index

index ++;

}

// generate indices

for ( let x = 0; x < radialSegments; x ++ ) {

const c = centerIndexStart + x;
				const i = centerIndexEnd + x;

if ( top === true ) {

// face top

indices.push( i, i + 1, c );

} else {

// face bottom

indices.push( i + 1, i, c );

}

groupCount += 3;

}

// add a group to the geometry. this will ensure multi material support

scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );

// calculate new start value for groups

groupStart += groupCount;

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new CylinderGeometry( data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

}

class ConeGeometry extends CylinderGeometry {

constructor( radius = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {

super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

this.type = 'ConeGeometry';

this.parameters = {
			radius: radius,
			height: height,
			radialSegments: radialSegments,
			heightSegments: heightSegments,
			openEnded: openEnded,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

}

static fromJSON( data ) {

return new ConeGeometry( data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );

}

class PolyhedronGeometry extends BufferGeometry {

constructor( vertices = [], indices = [], radius = 1, detail = 0 ) {

super();

this.type = 'PolyhedronGeometry';

this.parameters = {
			vertices: vertices,
			indices: indices,
			radius: radius,
			detail: detail
		};

// default buffer data

const vertexBuffer = [];
		const uvBuffer = [];

// the subdivision creates the vertex buffer data

subdivide( detail );

// all vertices should lie on a conceptual sphere with a given radius

applyRadius( radius );

// finally, create the uv data

generateUVs();

// build non-indexed geometry

this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );

if ( detail === 0 ) {

this.computeVertexNormals(); // flat normals

} else {

this.normalizeNormals(); // smooth normals

}

// helper functions

function subdivide( detail ) {

const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();

// iterate over all faces and apply a subdivision with the given detail value

for ( let i = 0; i < indices.length; i += 3 ) {

// get the vertices of the face

getVertexByIndex( indices[ i + 0 ], a );
				getVertexByIndex( indices[ i + 1 ], b );
				getVertexByIndex( indices[ i + 2 ], c );

// perform subdivision

subdivideFace( a, b, c, detail );

}

function subdivideFace( a, b, c, detail ) {

const cols = detail + 1;

// we use this multidimensional array as a data structure for creating the subdivision

const v = [];

// construct all of the vertices for this subdivision

for ( let i = 0; i <= cols; i ++ ) {

v[ i ] = [];

const aj = a.clone().lerp( c, i / cols );
				const bj = b.clone().lerp( c, i / cols );

const rows = cols - i;

for ( let j = 0; j <= rows; j ++ ) {

if ( j === 0 && i === cols ) {

v[ i ][ j ] = aj;

} else {

v[ i ][ j ] = aj.clone().lerp( bj, j / rows );

}

// construct all of the faces

for ( let i = 0; i < cols; i ++ ) {

for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {

const k = Math.floor( j / 2 );

if ( j % 2 === 0 ) {

pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );
						pushVertex( v[ i ][ k ] );

} else {

pushVertex( v[ i ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k + 1 ] );
						pushVertex( v[ i + 1 ][ k ] );

}

function applyRadius( radius ) {

const vertex = new Vector3();

// iterate over the entire buffer and apply the radius to each vertex

for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];

vertex.normalize().multiplyScalar( radius );

vertexBuffer[ i + 0 ] = vertex.x;
				vertexBuffer[ i + 1 ] = vertex.y;
				vertexBuffer[ i + 2 ] = vertex.z;

}

function generateUVs() {

const vertex = new Vector3();

for ( let i = 0; i < vertexBuffer.length; i += 3 ) {

vertex.x = vertexBuffer[ i + 0 ];
				vertex.y = vertexBuffer[ i + 1 ];
				vertex.z = vertexBuffer[ i + 2 ];

const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
				const v = inclination( vertex ) / Math.PI + 0.5;
				uvBuffer.push( u, 1 - v );

}

correctUVs();

correctSeam();

}

function correctSeam() {

// handle case when face straddles the seam, see #3269

for ( let i = 0; i < uvBuffer.length; i += 6 ) {

// uv data of a single face

const x0 = uvBuffer[ i + 0 ];
				const x1 = uvBuffer[ i + 2 ];
				const x2 = uvBuffer[ i + 4 ];

const max = Math.max( x0, x1, x2 );
				const min = Math.min( x0, x1, x2 );

// 0.9 is somewhat arbitrary

if ( max > 0.9 && min < 0.1 ) {

if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;

}

function pushVertex( vertex ) {

vertexBuffer.push( vertex.x, vertex.y, vertex.z );

}

function getVertexByIndex( index, vertex ) {

const stride = index * 3;

vertex.x = vertices[ stride + 0 ];
			vertex.y = vertices[ stride + 1 ];
			vertex.z = vertices[ stride + 2 ];

}

function correctUVs() {

const a = new Vector3();
			const b = new Vector3();
			const c = new Vector3();

const centroid = new Vector3();

const uvA = new Vector2();
			const uvB = new Vector2();
			const uvC = new Vector2();

for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {

a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );

uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );

centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );

const azi = azimuth( centroid );

correctUV( uvA, j + 0, a, azi );
				correctUV( uvB, j + 2, b, azi );
				correctUV( uvC, j + 4, c, azi );

}

function correctUV( uv, stride, vector, azimuth ) {

if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {

uvBuffer[ stride ] = uv.x - 1;

}

if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {

uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;

}

// Angle around the Y axis, counter-clockwise when looking from above.

function azimuth( vector ) {

return Math.atan2( vector.z, - vector.x );

}

// Angle above the XZ plane.

function inclination( vector ) {

return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new PolyhedronGeometry( data.vertices, data.indices, data.radius, data.details );

}

class DodecahedronGeometry extends PolyhedronGeometry {

constructor( radius = 1, detail = 0 ) {

const t = ( 1 + Math.sqrt( 5 ) ) / 2;
		const r = 1 / t;

const vertices = [

// (±1, ±1, ±1)
			- 1, - 1, - 1,	- 1, - 1, 1,
			- 1, 1, - 1, - 1, 1, 1,
			1, - 1, - 1, 1, - 1, 1,
			1, 1, - 1, 1, 1, 1,

// (0, ±1/φ, ±φ)
			0, - r, - t, 0, - r, t,
			0, r, - t, 0, r, t,

// (±1/φ, ±φ, 0)
			- r, - t, 0, - r, t, 0,
			r, - t, 0, r, t, 0,

// (±φ, 0, ±1/φ)
			- t, 0, - r, t, 0, - r,
			- t, 0, r, t, 0, r
		];

const indices = [
			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
			1, 12, 14, 	1, 14, 5, 	1, 5, 9
		];

super( vertices, indices, radius, detail );

this.type = 'DodecahedronGeometry';

this.parameters = {
			radius: radius,
			detail: detail
		};

}

static fromJSON( data ) {

return new DodecahedronGeometry( data.radius, data.detail );

}

const _v0 = /*@__PURE__*/ new Vector3();
const _v1$1 = /*@__PURE__*/ new Vector3();
const _normal = /*@__PURE__*/ new Vector3();
const _triangle = /*@__PURE__*/ new Triangle();

class EdgesGeometry extends BufferGeometry {

constructor( geometry = null, thresholdAngle = 1 ) {

super();

this.type = 'EdgesGeometry';

this.parameters = {
			geometry: geometry,
			thresholdAngle: thresholdAngle
		};

if ( geometry !== null ) {

const precisionPoints = 4;
			const precision = Math.pow( 10, precisionPoints );
			const thresholdDot = Math.cos( DEG2RAD * thresholdAngle );

const indexAttr = geometry.getIndex();
			const positionAttr = geometry.getAttribute( 'position' );
			const indexCount = indexAttr ? indexAttr.count : positionAttr.count;

const indexArr = [ 0, 0, 0 ];
			const vertKeys = [ 'a', 'b', 'c' ];
			const hashes = new Array( 3 );

const edgeData = {};
			const vertices = [];
			for ( let i = 0; i < indexCount; i += 3 ) {

if ( indexAttr ) {

indexArr[ 0 ] = indexAttr.getX( i );
					indexArr[ 1 ] = indexAttr.getX( i + 1 );
					indexArr[ 2 ] = indexAttr.getX( i + 2 );

} else {

indexArr[ 0 ] = i;
					indexArr[ 1 ] = i + 1;
					indexArr[ 2 ] = i + 2;

}

const { a, b, c } = _triangle;
				a.fromBufferAttribute( positionAttr, indexArr[ 0 ] );
				b.fromBufferAttribute( positionAttr, indexArr[ 1 ] );
				c.fromBufferAttribute( positionAttr, indexArr[ 2 ] );
				_triangle.getNormal( _normal );

// create hashes for the edge from the vertices
				hashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;
				hashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;
				hashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;

// skip degenerate triangles
				if ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {

continue;

}

// iterate over every edge
				for ( let j = 0; j < 3; j ++ ) {

// get the first and next vertex making up the edge
					const jNext = ( j + 1 ) % 3;
					const vecHash0 = hashes[ j ];
					const vecHash1 = hashes[ jNext ];
					const v0 = _triangle[ vertKeys[ j ] ];
					const v1 = _triangle[ vertKeys[ jNext ] ];

const hash = `${ vecHash0 }_${ vecHash1 }`;
					const reverseHash = `${ vecHash1 }_${ vecHash0 }`;

if ( reverseHash in edgeData && edgeData[ reverseHash ] ) {

// if we found a sibling edge add it into the vertex array if
						// it meets the angle threshold and delete the edge from the map.
						if ( _normal.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {

vertices.push( v0.x, v0.y, v0.z );
							vertices.push( v1.x, v1.y, v1.z );

}

edgeData[ reverseHash ] = null;

} else if ( ! ( hash in edgeData ) ) {

// if we've already got an edge here then skip adding a new one
						edgeData[ hash ] = {

index0: indexArr[ j ],
							index1: indexArr[ jNext ],
							normal: _normal.clone(),

};

}

// iterate over all remaining, unmatched edges and add them to the vertex array
			for ( const key in edgeData ) {

if ( edgeData[ key ] ) {

const { index0, index1 } = edgeData[ key ];
					_v0.fromBufferAttribute( positionAttr, index0 );
					_v1$1.fromBufferAttribute( positionAttr, index1 );

vertices.push( _v0.x, _v0.y, _v0.z );
					vertices.push( _v1$1.x, _v1$1.y, _v1$1.z );

}

this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

class Shape extends Path {

constructor( points ) {

super( points );

this.uuid = generateUUID();

this.type = 'Shape';

this.holes = [];

}

getPointsHoles( divisions ) {

const holesPts = [];

for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

holesPts[ i ] = this.holes[ i ].getPoints( divisions );

}

return holesPts;

}

// get points of shape and holes (keypoints based on segments parameter)

extractPoints( divisions ) {

return {

shape: this.getPoints( divisions ),
			holes: this.getPointsHoles( divisions )

};

}

copy( source ) {

super.copy( source );

this.holes = [];

for ( let i = 0, l = source.holes.length; i < l; i ++ ) {

const hole = source.holes[ i ];

this.holes.push( hole.clone() );

}

return this;

}

toJSON() {

const data = super.toJSON();

data.uuid = this.uuid;
		data.holes = [];

for ( let i = 0, l = this.holes.length; i < l; i ++ ) {

const hole = this.holes[ i ];
			data.holes.push( hole.toJSON() );

}

return data;

}

fromJSON( json ) {

super.fromJSON( json );

this.uuid = json.uuid;
		this.holes = [];

for ( let i = 0, l = json.holes.length; i < l; i ++ ) {

const hole = json.holes[ i ];
			this.holes.push( new Path().fromJSON( hole ) );

}

return this;

}

/**
 * Port from https://github.com/mapbox/earcut (v2.2.4)
 */

const Earcut = {

triangulate: function ( data, holeIndices, dim = 2 ) {

const hasHoles = holeIndices && holeIndices.length;
		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
		let outerNode = linkedList( data, 0, outerLen, dim, true );
		const triangles = [];

if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;

let minX, minY, maxX, maxY, x, y, invSize;

if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );

// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
		if ( data.length > 80 * dim ) {

minX = maxX = data[ 0 ];
			minY = maxY = data[ 1 ];

for ( let i = dim; i < outerLen; i += dim ) {

x = data[ i ];
				y = data[ i + 1 ];
				if ( x < minX ) minX = x;
				if ( y < minY ) minY = y;
				if ( x > maxX ) maxX = x;
				if ( y > maxY ) maxY = y;

}

// minX, minY and invSize are later used to transform coords into integers for z-order calculation
			invSize = Math.max( maxX - minX, maxY - minY );
			invSize = invSize !== 0 ? 32767 / invSize : 0;

}

earcutLinked( outerNode, triangles, dim, minX, minY, invSize, 0 );

return triangles;

}

};

// create a circular doubly linked list from polygon points in the specified winding order
function linkedList( data, start, end, dim, clockwise ) {

let i, last;

if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {

for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

} else {

for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );

}

if ( last && equals( last, last.next ) ) {

removeNode( last );
		last = last.next;

}

return last;

}

// eliminate colinear or duplicate points
function filterPoints( start, end ) {

if ( ! start ) return start;
	if ( ! end ) end = start;

let p = start,
		again;
	do {

again = false;

if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {

removeNode( p );
			p = end = p.prev;
			if ( p === p.next ) break;
			again = true;

} else {

p = p.next;

}

} while ( again || p !== end );

return end;

}

// main ear slicing loop which triangulates a polygon (given as a linked list)
function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {

if ( ! ear ) return;

// interlink polygon nodes in z-order
	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );

let stop = ear,
		prev, next;

// iterate through ears, slicing them one by one
	while ( ear.prev !== ear.next ) {

prev = ear.prev;
		next = ear.next;

if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {

// cut off the triangle
			triangles.push( prev.i / dim | 0 );
			triangles.push( ear.i / dim | 0 );
			triangles.push( next.i / dim | 0 );

removeNode( ear );

// skipping the next vertex leads to less sliver triangles
			ear = next.next;
			stop = next.next;

continue;

}

ear = next;

// if we looped through the whole remaining polygon and can't find any more ears
		if ( ear === stop ) {

// try filtering points and slicing again
			if ( ! pass ) {

earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );

// if this didn't work, try curing all small self-intersections locally

} else if ( pass === 1 ) {

ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );

// as a last resort, try splitting the remaining polygon into two

} else if ( pass === 2 ) {

splitEarcut( ear, triangles, dim, minX, minY, invSize );

}

break;

}

// check whether a polygon node forms a valid ear with adjacent nodes
function isEar( ear ) {

const a = ear.prev,
		b = ear,
		c = ear.next;

if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

// now make sure we don't have other points inside the potential ear
	const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;

// triangle bbox; min & max are calculated like this for speed
	const x0 = ax < bx ? ( ax < cx ? ax : cx ) : ( bx < cx ? bx : cx ),
		y0 = ay < by ? ( ay < cy ? ay : cy ) : ( by < cy ? by : cy ),
		x1 = ax > bx ? ( ax > cx ? ax : cx ) : ( bx > cx ? bx : cx ),
		y1 = ay > by ? ( ay > cy ? ay : cy ) : ( by > cy ? by : cy );

let p = c.next;
	while ( p !== a ) {

if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 &&
			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) &&
			area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.next;

}

return true;

}

function isEarHashed( ear, minX, minY, invSize ) {

const a = ear.prev,
		b = ear,
		c = ear.next;

if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear

const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;

// z-order range for the current triangle bbox;
	const minZ = zOrder( x0, y0, minX, minY, invSize ),
		maxZ = zOrder( x1, y1, minX, minY, invSize );

let p = ear.prevZ,
		n = ear.nextZ;

// look for points inside the triangle in both directions
	while ( p && p.z >= minZ && n && n.z <= maxZ ) {

if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&
			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;

if ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&
			pointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;

}

// look for remaining points in decreasing z-order
	while ( p && p.z >= minZ ) {

if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&
			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;
		p = p.prevZ;

}

// look for remaining points in increasing z-order
	while ( n && n.z <= maxZ ) {

if ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&
			pointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;
		n = n.nextZ;

}

return true;

}

// go through all polygon nodes and cure small local self-intersections
function cureLocalIntersections( start, triangles, dim ) {

let p = start;
	do {

const a = p.prev,
			b = p.next.next;

if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {

triangles.push( a.i / dim | 0 );
			triangles.push( p.i / dim | 0 );
			triangles.push( b.i / dim | 0 );

// remove two nodes involved
			removeNode( p );
			removeNode( p.next );

p = start = b;

}

p = p.next;

} while ( p !== start );

return filterPoints( p );

}

// try splitting polygon into two and triangulate them independently
function splitEarcut( start, triangles, dim, minX, minY, invSize ) {

// look for a valid diagonal that divides the polygon into two
	let a = start;
	do {

let b = a.next.next;
		while ( b !== a.prev ) {

if ( a.i !== b.i && isValidDiagonal( a, b ) ) {

// split the polygon in two by the diagonal
				let c = splitPolygon( a, b );

// filter colinear points around the cuts
				a = filterPoints( a, a.next );
				c = filterPoints( c, c.next );

// run earcut on each half
				earcutLinked( a, triangles, dim, minX, minY, invSize, 0 );
				earcutLinked( c, triangles, dim, minX, minY, invSize, 0 );
				return;

}

b = b.next;

}

a = a.next;

} while ( a !== start );

}

// link every hole into the outer loop, producing a single-ring polygon without holes
function eliminateHoles( data, holeIndices, outerNode, dim ) {

const queue = [];
	let i, len, start, end, list;

for ( i = 0, len = holeIndices.length; i < len; i ++ ) {

start = holeIndices[ i ] * dim;
		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
		list = linkedList( data, start, end, dim, false );
		if ( list === list.next ) list.steiner = true;
		queue.push( getLeftmost( list ) );

}

queue.sort( compareX );

// process holes from left to right
	for ( i = 0; i < queue.length; i ++ ) {

outerNode = eliminateHole( queue[ i ], outerNode );

}

return outerNode;

}

function compareX( a, b ) {

return a.x - b.x;

}

// find a bridge between vertices that connects hole with an outer ring and link it
function eliminateHole( hole, outerNode ) {

const bridge = findHoleBridge( hole, outerNode );
	if ( ! bridge ) {

return outerNode;

}

const bridgeReverse = splitPolygon( bridge, hole );

// filter collinear points around the cuts
	filterPoints( bridgeReverse, bridgeReverse.next );
	return filterPoints( bridge, bridge.next );

}

// David Eberly's algorithm for finding a bridge between hole and outer polygon
function findHoleBridge( hole, outerNode ) {

let p = outerNode,
		qx = - Infinity,
		m;

const hx = hole.x, hy = hole.y;

// find a segment intersected by a ray from the hole's leftmost point to the left;
	// segment's endpoint with lesser x will be potential connection point
	do {

if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {

const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
			if ( x <= hx && x > qx ) {

qx = x;
				m = p.x < p.next.x ? p : p.next;
				if ( x === hx ) return m; // hole touches outer segment; pick leftmost endpoint

}

p = p.next;

} while ( p !== outerNode );

if ( ! m ) return null;

// look for points inside the triangle of hole point, segment intersection and endpoint;
	// if there are no points found, we have a valid connection;
	// otherwise choose the point of the minimum angle with the ray as connection point

const stop = m,
		mx = m.x,
		my = m.y;
	let tanMin = Infinity, tan;

p = m;

do {

if ( hx >= p.x && p.x >= mx && hx !== p.x &&
				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {

tan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential

if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {

m = p;
				tanMin = tan;

}

p = p.next;

} while ( p !== stop );

return m;

}

// whether sector in vertex m contains sector in vertex p in the same coordinates
function sectorContainsSector( m, p ) {

return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;

}

// interlink polygon nodes in z-order
function indexCurve( start, minX, minY, invSize ) {

let p = start;
	do {

if ( p.z === 0 ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
		p.prevZ = p.prev;
		p.nextZ = p.next;
		p = p.next;

} while ( p !== start );

p.prevZ.nextZ = null;
	p.prevZ = null;

sortLinked( p );

}

// Simon Tatham's linked list merge sort algorithm
// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
function sortLinked( list ) {

let i, p, q, e, tail, numMerges, pSize, qSize,
		inSize = 1;

do {

p = list;
		list = null;
		tail = null;
		numMerges = 0;

while ( p ) {

numMerges ++;
			q = p;
			pSize = 0;
			for ( i = 0; i < inSize; i ++ ) {

pSize ++;
				q = q.nextZ;
				if ( ! q ) break;

}

qSize = inSize;

while ( pSize > 0 || ( qSize > 0 && q ) ) {

if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {

e = p;
					p = p.nextZ;
					pSize --;

} else {

e = q;
					q = q.nextZ;
					qSize --;

}

if ( tail ) tail.nextZ = e;
				else list = e;

e.prevZ = tail;
				tail = e;

}

p = q;

}

tail.nextZ = null;
		inSize *= 2;

} while ( numMerges > 1 );

return list;

}

// z-order of a point given coords and inverse of the longer side of data bbox
function zOrder( x, y, minX, minY, invSize ) {

// coords are transformed into non-negative 15-bit integer range
	x = ( x - minX ) * invSize | 0;
	y = ( y - minY ) * invSize | 0;

x = ( x | ( x << 8 ) ) & 0x00FF00FF;
	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
	x = ( x | ( x << 2 ) ) & 0x33333333;
	x = ( x | ( x << 1 ) ) & 0x55555555;

y = ( y | ( y << 8 ) ) & 0x00FF00FF;
	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
	y = ( y | ( y << 2 ) ) & 0x33333333;
	y = ( y | ( y << 1 ) ) & 0x55555555;

return x | ( y << 1 );

}

// find the leftmost node of a polygon ring
function getLeftmost( start ) {

let p = start,
		leftmost = start;
	do {

if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
		p = p.next;

} while ( p !== start );

return leftmost;

}

// check if a point lies within a convex triangle
function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {

return ( cx - px ) * ( ay - py ) >= ( ax - px ) * ( cy - py ) &&
           ( ax - px ) * ( by - py ) >= ( bx - px ) * ( ay - py ) &&
           ( bx - px ) * ( cy - py ) >= ( cx - px ) * ( by - py );

}

// check if a diagonal between two polygon nodes is valid (lies in polygon interior)
function isValidDiagonal( a, b ) {

return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges
           ( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible
            ( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors
            equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case

}

// signed area of a triangle
function area( p, q, r ) {

return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );

}

// check if two points are equal
function equals( p1, p2 ) {

return p1.x === p2.x && p1.y === p2.y;

}

// check if two segments intersect
function intersects( p1, q1, p2, q2 ) {

const o1 = sign( area( p1, q1, p2 ) );
	const o2 = sign( area( p1, q1, q2 ) );
	const o3 = sign( area( p2, q2, p1 ) );
	const o4 = sign( area( p2, q2, q1 ) );

if ( o1 !== o2 && o3 !== o4 ) return true; // general case

if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2

return false;

}

// for collinear points p, q, r, check if point q lies on segment pr
function onSegment( p, q, r ) {

return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );

}

function sign( num ) {

return num > 0 ? 1 : num < 0 ? - 1 : 0;

}

// check if a polygon diagonal intersects any polygon segments
function intersectsPolygon( a, b ) {

let p = a;
	do {

if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
			intersects( p, p.next, a, b ) ) return true;
		p = p.next;

} while ( p !== a );

return false;

}

// check if a polygon diagonal is locally inside the polygon
function locallyInside( a, b ) {

return area( a.prev, a, a.next ) < 0 ?
		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;

}

// check if the middle point of a polygon diagonal is inside the polygon
function middleInside( a, b ) {

let p = a,
		inside = false;
	const px = ( a.x + b.x ) / 2,
		py = ( a.y + b.y ) / 2;
	do {

if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
			( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
			inside = ! inside;
		p = p.next;

} while ( p !== a );

return inside;

}

// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
// if one belongs to the outer ring and another to a hole, it merges it into a single ring
function splitPolygon( a, b ) {

const a2 = new Node( a.i, a.x, a.y ),
		b2 = new Node( b.i, b.x, b.y ),
		an = a.next,
		bp = b.prev;

a.next = b;
	b.prev = a;

a2.next = an;
	an.prev = a2;

b2.next = a2;
	a2.prev = b2;

bp.next = b2;
	b2.prev = bp;

return b2;

}

// create a node and optionally link it with previous one (in a circular doubly linked list)
function insertNode( i, x, y, last ) {

const p = new Node( i, x, y );

if ( ! last ) {

p.prev = p;
		p.next = p;

} else {

p.next = last.next;
		p.prev = last;
		last.next.prev = p;
		last.next = p;

}

return p;

}

function removeNode( p ) {

p.next.prev = p.prev;
	p.prev.next = p.next;

if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;

}

function Node( i, x, y ) {

// vertex index in coordinates array
	this.i = i;

// vertex coordinates
	this.x = x;
	this.y = y;

// previous and next vertex nodes in a polygon ring
	this.prev = null;
	this.next = null;

// z-order curve value
	this.z = 0;

// previous and next nodes in z-order
	this.prevZ = null;
	this.nextZ = null;

// indicates whether this is a steiner point
	this.steiner = false;

}

function signedArea( data, start, end, dim ) {

let sum = 0;
	for ( let i = start, j = end - dim; i < end; i += dim ) {

sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
		j = i;

}

return sum;

}

class ShapeUtils {

// calculate area of the contour polygon

static area( contour ) {

const n = contour.length;
		let a = 0.0;

for ( let p = n - 1, q = 0; q < n; p = q ++ ) {

a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;

}

return a * 0.5;

}

static isClockWise( pts ) {

return ShapeUtils.area( pts ) < 0;

}

static triangulateShape( contour, holes ) {

const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
		const holeIndices = []; // array of hole indices
		const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]

removeDupEndPts( contour );
		addContour( vertices, contour );

let holeIndex = contour.length;

holes.forEach( removeDupEndPts );

for ( let i = 0; i < holes.length; i ++ ) {

holeIndices.push( holeIndex );
			holeIndex += holes[ i ].length;
			addContour( vertices, holes[ i ] );

}

const triangles = Earcut.triangulate( vertices, holeIndices );

for ( let i = 0; i < triangles.length; i += 3 ) {

faces.push( triangles.slice( i, i + 3 ) );

}

return faces;

}

function removeDupEndPts( points ) {

const l = points.length;

if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {

points.pop();

}

function addContour( vertices, contour ) {

for ( let i = 0; i < contour.length; i ++ ) {

vertices.push( contour[ i ].x );
		vertices.push( contour[ i ].y );

}

/**
 * Creates extruded geometry from a path shape.
 *
 * parameters = {
 *
 *  curveSegments: <int>, // number of points on the curves
 *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
 *  depth: <float>, // Depth to extrude the shape
 *
 *  bevelEnabled: <bool>, // turn on bevel
 *  bevelThickness: <float>, // how deep into the original shape bevel goes
 *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
 *  bevelOffset: <float>, // how far from shape outline does bevel start
 *  bevelSegments: <int>, // number of bevel layers
 *
 *  extrudePath: <THREE.Curve> // curve to extrude shape along
 *
 *  UVGenerator: <Object> // object that provides UV generator functions
 *
 * }
 */

class ExtrudeGeometry extends BufferGeometry {

constructor( shapes = new Shape( [ new Vector2( 0.5, 0.5 ), new Vector2( - 0.5, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), options = {} ) {

super();

this.type = 'ExtrudeGeometry';

this.parameters = {
			shapes: shapes,
			options: options
		};

shapes = Array.isArray( shapes ) ? shapes : [ shapes ];

const scope = this;

const verticesArray = [];
		const uvArray = [];

for ( let i = 0, l = shapes.length; i < l; i ++ ) {

const shape = shapes[ i ];
			addShape( shape );

}

// build geometry

this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );

this.computeVertexNormals();

// functions

function addShape( shape ) {

const placeholder = [];

// options

const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
			const steps = options.steps !== undefined ? options.steps : 1;
			const depth = options.depth !== undefined ? options.depth : 1;

let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;
			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;
			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;

const extrudePath = options.extrudePath;

const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;

let extrudePts, extrudeByPath = false;
			let splineTube, binormal, normal, position2;

if ( extrudePath ) {

extrudePts = extrudePath.getSpacedPoints( steps );

extrudeByPath = true;
				bevelEnabled = false; // bevels not supported for path extrusion

// SETUP TNB variables

// TODO1 - have a .isClosed in spline?

splineTube = extrudePath.computeFrenetFrames( steps, false );

// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);

binormal = new Vector3();
				normal = new Vector3();
				position2 = new Vector3();

}

// Safeguards if bevels are not enabled

if ( ! bevelEnabled ) {

bevelSegments = 0;
				bevelThickness = 0;
				bevelSize = 0;
				bevelOffset = 0;

}

// Variables initialization

const shapePoints = shape.extractPoints( curveSegments );

let vertices = shapePoints.shape;
			const holes = shapePoints.holes;

const reverse = ! ShapeUtils.isClockWise( vertices );

if ( reverse ) {

vertices = vertices.reverse();

// Maybe we should also check if holes are in the opposite direction, just to be safe ...

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];

if ( ShapeUtils.isClockWise( ahole ) ) {

holes[ h ] = ahole.reverse();

}

const faces = ShapeUtils.triangulateShape( vertices, holes );

/* Vertices */

const contour = vertices; // vertices has all points but contour has only points of circumference

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];

vertices = vertices.concat( ahole );

}

function scalePt2( pt, vec, size ) {

if ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );

return pt.clone().addScaledVector( vec, size );

}

const vlen = vertices.length, flen = faces.length;

// Find directions for point movement

function getBevelVec( inPt, inPrev, inNext ) {

// computes for inPt the corresponding point inPt' on a new contour
				//   shifted by 1 unit (length of normalized vector) to the left
				// if we walk along contour clockwise, this new contour is outside the old one
				//
				// inPt' is the intersection of the two lines parallel to the two
				//  adjacent edges of inPt at a distance of 1 unit on the left side.

let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt

// good reading for geometry algorithms (here: line-line intersection)
				// http://geomalgorithms.com/a05-_intersect-1.html

const v_prev_x = inPt.x - inPrev.x,
					v_prev_y = inPt.y - inPrev.y;
				const v_next_x = inNext.x - inPt.x,
					v_next_y = inNext.y - inPt.y;

const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );

// check for collinear edges
				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );

if ( Math.abs( collinear0 ) > Number.EPSILON ) {

// not collinear

// length of vectors for normalizing

const v_prev_len = Math.sqrt( v_prev_lensq );
					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );

// shift adjacent points by unit vectors to the left

const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );

const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );

// scaling factor for v_prev to intersection point

const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
						( v_prev_x * v_next_y - v_prev_y * v_next_x );

// vector from inPt to intersection point

v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );

// Don't normalize!, otherwise sharp corners become ugly
					//  but prevent crazy spikes
					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
					if ( v_trans_lensq <= 2 ) {

return new Vector2( v_trans_x, v_trans_y );

} else {

shrink_by = Math.sqrt( v_trans_lensq / 2 );

}

} else {

// handle special case of collinear edges

let direction_eq = false; // assumes: opposite

if ( v_prev_x > Number.EPSILON ) {

if ( v_next_x > Number.EPSILON ) {

direction_eq = true;

}

} else {

if ( v_prev_x < - Number.EPSILON ) {

if ( v_next_x < - Number.EPSILON ) {

direction_eq = true;

}

} else {

if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {

direction_eq = true;

}

if ( direction_eq ) {

// console.log("Warning: lines are a straight sequence");
						v_trans_x = - v_prev_y;
						v_trans_y = v_prev_x;
						shrink_by = Math.sqrt( v_prev_lensq );

} else {

// console.log("Warning: lines are a straight spike");
						v_trans_x = v_prev_x;
						v_trans_y = v_prev_y;
						shrink_by = Math.sqrt( v_prev_lensq / 2 );

}

return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );

}

const contourMovements = [];

for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

if ( j === il ) j = 0;
				if ( k === il ) k = 0;

//  (j)---(i)---(k)
				// console.log('i,j,k', i, j , k)

contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );

}

const holesMovements = [];
			let oneHoleMovements, verticesMovements = contourMovements.concat();

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];

oneHoleMovements = [];

for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {

if ( j === il ) j = 0;
					if ( k === il ) k = 0;

//  (j)---(i)---(k)
					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );

}

holesMovements.push( oneHoleMovements );
				verticesMovements = verticesMovements.concat( oneHoleMovements );

}

// Loop bevelSegments, 1 for the front, 1 for the back

for ( let b = 0; b < bevelSegments; b ++ ) {

//for ( b = bevelSegments; b > 0; b -- ) {

const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

// contract shape

for ( let i = 0, il = contour.length; i < il; i ++ ) {

const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );

v( vert.x, vert.y, - z );

}

// expand holes

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];

for ( let i = 0, il = ahole.length; i < il; i ++ ) {

const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

v( vert.x, vert.y, - z );

}

const bs = bevelSize + bevelOffset;

// Back facing vertices

for ( let i = 0; i < vlen; i ++ ) {

const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

if ( ! extrudeByPath ) {

v( vert.x, vert.y, 0 );

} else {

// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );

normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );

position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );

v( position2.x, position2.y, position2.z );

}

// Add stepped vertices...
			// Including front facing vertices

for ( let s = 1; s <= steps; s ++ ) {

for ( let i = 0; i < vlen; i ++ ) {

const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];

if ( ! extrudeByPath ) {

v( vert.x, vert.y, depth / steps * s );

} else {

// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );

normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );

position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );

v( position2.x, position2.y, position2.z );

}

// Add bevel segments planes

//for ( b = 1; b <= bevelSegments; b ++ ) {
			for ( let b = bevelSegments - 1; b >= 0; b -- ) {

const t = b / bevelSegments;
				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;

// contract shape

for ( let i = 0, il = contour.length; i < il; i ++ ) {

const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
					v( vert.x, vert.y, depth + z );

}

// expand holes

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];
					oneHoleMovements = holesMovements[ h ];

for ( let i = 0, il = ahole.length; i < il; i ++ ) {

const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );

if ( ! extrudeByPath ) {

v( vert.x, vert.y, depth + z );

} else {

v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );

}

/* Faces */

// Top and bottom faces

buildLidFaces();

// Sides faces

buildSideFaces();

/////  Internal functions

function buildLidFaces() {

const start = verticesArray.length / 3;

if ( bevelEnabled ) {

let layer = 0; // steps + 1
					let offset = vlen * layer;

// Bottom faces

for ( let i = 0; i < flen; i ++ ) {

const face = faces[ i ];
						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );

}

layer = steps + bevelSegments * 2;
					offset = vlen * layer;

// Top faces

for ( let i = 0; i < flen; i ++ ) {

const face = faces[ i ];
						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );

}

} else {

// Bottom faces

for ( let i = 0; i < flen; i ++ ) {

const face = faces[ i ];
						f3( face[ 2 ], face[ 1 ], face[ 0 ] );

}

// Top faces

for ( let i = 0; i < flen; i ++ ) {

const face = faces[ i ];
						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );

}

scope.addGroup( start, verticesArray.length / 3 - start, 0 );

}

// Create faces for the z-sides of the shape

function buildSideFaces() {

const start = verticesArray.length / 3;
				let layeroffset = 0;
				sidewalls( contour, layeroffset );
				layeroffset += contour.length;

for ( let h = 0, hl = holes.length; h < hl; h ++ ) {

const ahole = holes[ h ];
					sidewalls( ahole, layeroffset );

//, true
					layeroffset += ahole.length;

}

scope.addGroup( start, verticesArray.length / 3 - start, 1 );

}

function sidewalls( contour, layeroffset ) {

let i = contour.length;

while ( -- i >= 0 ) {

const j = i;
					let k = i - 1;
					if ( k < 0 ) k = contour.length - 1;

//console.log('b', i,j, i-1, k,vertices.length);

for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {

const slen1 = vlen * s;
						const slen2 = vlen * ( s + 1 );

const a = layeroffset + j + slen1,
							b = layeroffset + k + slen1,
							c = layeroffset + k + slen2,
							d = layeroffset + j + slen2;

f4( a, b, c, d );

}

function v( x, y, z ) {

placeholder.push( x );
				placeholder.push( y );
				placeholder.push( z );

}

function f3( a, b, c ) {

addVertex( a );
				addVertex( b );
				addVertex( c );

const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );

}

function f4( a, b, c, d ) {

addVertex( a );
				addVertex( b );
				addVertex( d );

addVertex( b );
				addVertex( c );
				addVertex( d );

const nextIndex = verticesArray.length / 3;
				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );

addUV( uvs[ 0 ] );
				addUV( uvs[ 1 ] );
				addUV( uvs[ 3 ] );

addUV( uvs[ 1 ] );
				addUV( uvs[ 2 ] );
				addUV( uvs[ 3 ] );

}

function addVertex( index ) {

verticesArray.push( placeholder[ index * 3 + 0 ] );
				verticesArray.push( placeholder[ index * 3 + 1 ] );
				verticesArray.push( placeholder[ index * 3 + 2 ] );

}

function addUV( vector2 ) {

uvArray.push( vector2.x );
				uvArray.push( vector2.y );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

toJSON() {

const data = super.toJSON();

const shapes = this.parameters.shapes;
		const options = this.parameters.options;

return toJSON$1( shapes, options, data );

}

static fromJSON( data, shapes ) {

const geometryShapes = [];

for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

const shape = shapes[ data.shapes[ j ] ];

geometryShapes.push( shape );

}

const extrudePath = data.options.extrudePath;

if ( extrudePath !== undefined ) {

data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );

}

return new ExtrudeGeometry( geometryShapes, data.options );

}

const WorldUVGenerator = {

generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {

const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];

return [
			new Vector2( a_x, a_y ),
			new Vector2( b_x, b_y ),
			new Vector2( c_x, c_y )
		];

generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {

const a_x = vertices[ indexA * 3 ];
		const a_y = vertices[ indexA * 3 + 1 ];
		const a_z = vertices[ indexA * 3 + 2 ];
		const b_x = vertices[ indexB * 3 ];
		const b_y = vertices[ indexB * 3 + 1 ];
		const b_z = vertices[ indexB * 3 + 2 ];
		const c_x = vertices[ indexC * 3 ];
		const c_y = vertices[ indexC * 3 + 1 ];
		const c_z = vertices[ indexC * 3 + 2 ];
		const d_x = vertices[ indexD * 3 ];
		const d_y = vertices[ indexD * 3 + 1 ];
		const d_z = vertices[ indexD * 3 + 2 ];

if ( Math.abs( a_y - b_y ) < Math.abs( a_x - b_x ) ) {

return [
				new Vector2( a_x, 1 - a_z ),
				new Vector2( b_x, 1 - b_z ),
				new Vector2( c_x, 1 - c_z ),
				new Vector2( d_x, 1 - d_z )
			];

} else {

return [
				new Vector2( a_y, 1 - a_z ),
				new Vector2( b_y, 1 - b_z ),
				new Vector2( c_y, 1 - c_z ),
				new Vector2( d_y, 1 - d_z )
			];

}

};

function toJSON$1( shapes, options, data ) {

data.shapes = [];

if ( Array.isArray( shapes ) ) {

for ( let i = 0, l = shapes.length; i < l; i ++ ) {

const shape = shapes[ i ];

data.shapes.push( shape.uuid );

}

} else {

data.shapes.push( shapes.uuid );

}

data.options = Object.assign( {}, options );

if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();

return data;

}

class IcosahedronGeometry extends PolyhedronGeometry {

constructor( radius = 1, detail = 0 ) {

const t = ( 1 + Math.sqrt( 5 ) ) / 2;

const vertices = [
			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
		];

const indices = [
			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
		];

super( vertices, indices, radius, detail );

this.type = 'IcosahedronGeometry';

this.parameters = {
			radius: radius,
			detail: detail
		};

}

static fromJSON( data ) {

return new IcosahedronGeometry( data.radius, data.detail );

}

class OctahedronGeometry extends PolyhedronGeometry {

constructor( radius = 1, detail = 0 ) {

const vertices = [
			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
		];

const indices = [
			0, 2, 4,	0, 4, 3,	0, 3, 5,
			0, 5, 2,	1, 2, 5,	1, 5, 3,
			1, 3, 4,	1, 4, 2
		];

super( vertices, indices, radius, detail );

this.type = 'OctahedronGeometry';

this.parameters = {
			radius: radius,
			detail: detail
		};

}

static fromJSON( data ) {

return new OctahedronGeometry( data.radius, data.detail );

}

class RingGeometry extends BufferGeometry {

constructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 32, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {

super();

this.type = 'RingGeometry';

this.parameters = {
			innerRadius: innerRadius,
			outerRadius: outerRadius,
			thetaSegments: thetaSegments,
			phiSegments: phiSegments,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

thetaSegments = Math.max( 3, thetaSegments );
		phiSegments = Math.max( 1, phiSegments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// some helper variables

let radius = innerRadius;
		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
		const vertex = new Vector3();
		const uv = new Vector2();

// generate vertices, normals and uvs

for ( let j = 0; j <= phiSegments; j ++ ) {

for ( let i = 0; i <= thetaSegments; i ++ ) {

// values are generate from the inside of the ring to the outside

const segment = thetaStart + i / thetaSegments * thetaLength;

// vertex

vertex.x = radius * Math.cos( segment );
				vertex.y = radius * Math.sin( segment );

vertices.push( vertex.x, vertex.y, vertex.z );

// normal

normals.push( 0, 0, 1 );

// uv

uv.x = ( vertex.x / outerRadius + 1 ) / 2;
				uv.y = ( vertex.y / outerRadius + 1 ) / 2;

uvs.push( uv.x, uv.y );

}

// increase the radius for next row of vertices

radius += radiusStep;

}

// indices

for ( let j = 0; j < phiSegments; j ++ ) {

const thetaSegmentLevel = j * ( thetaSegments + 1 );

for ( let i = 0; i < thetaSegments; i ++ ) {

const segment = i + thetaSegmentLevel;

const a = segment;
				const b = segment + thetaSegments + 1;
				const c = segment + thetaSegments + 2;
				const d = segment + 1;

// faces

indices.push( a, b, d );
				indices.push( b, c, d );

}

// build geometry

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new RingGeometry( data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength );

}

class ShapeGeometry extends BufferGeometry {

constructor( shapes = new Shape( [ new Vector2( 0, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), curveSegments = 12 ) {

super();

this.type = 'ShapeGeometry';

this.parameters = {
			shapes: shapes,
			curveSegments: curveSegments
		};

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

let groupStart = 0;
		let groupCount = 0;

// allow single and array values for "shapes" parameter

if ( Array.isArray( shapes ) === false ) {

addShape( shapes );

} else {

for ( let i = 0; i < shapes.length; i ++ ) {

addShape( shapes[ i ] );

this.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support

groupStart += groupCount;
				groupCount = 0;

}

// build geometry

// helper functions

function addShape( shape ) {

const indexOffset = vertices.length / 3;
			const points = shape.extractPoints( curveSegments );

let shapeVertices = points.shape;
			const shapeHoles = points.holes;

// check direction of vertices

if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {

shapeVertices = shapeVertices.reverse();

}

for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

const shapeHole = shapeHoles[ i ];

if ( ShapeUtils.isClockWise( shapeHole ) === true ) {

shapeHoles[ i ] = shapeHole.reverse();

}

const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );

// join vertices of inner and outer paths to a single array

for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {

const shapeHole = shapeHoles[ i ];
				shapeVertices = shapeVertices.concat( shapeHole );

}

// vertices, normals, uvs

for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {

const vertex = shapeVertices[ i ];

vertices.push( vertex.x, vertex.y, 0 );
				normals.push( 0, 0, 1 );
				uvs.push( vertex.x, vertex.y ); // world uvs

}

// indices

for ( let i = 0, l = faces.length; i < l; i ++ ) {

const face = faces[ i ];

const a = face[ 0 ] + indexOffset;
				const b = face[ 1 ] + indexOffset;
				const c = face[ 2 ] + indexOffset;

indices.push( a, b, c );
				groupCount += 3;

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

toJSON() {

const data = super.toJSON();

const shapes = this.parameters.shapes;

return toJSON( shapes, data );

}

static fromJSON( data, shapes ) {

const geometryShapes = [];

for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {

const shape = shapes[ data.shapes[ j ] ];

geometryShapes.push( shape );

}

return new ShapeGeometry( geometryShapes, data.curveSegments );

}

function toJSON( shapes, data ) {

data.shapes = [];

if ( Array.isArray( shapes ) ) {

for ( let i = 0, l = shapes.length; i < l; i ++ ) {

const shape = shapes[ i ];

data.shapes.push( shape.uuid );

}

} else {

data.shapes.push( shapes.uuid );

}

return data;

}

class SphereGeometry extends BufferGeometry {

constructor( radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {

super();

this.type = 'SphereGeometry';

this.parameters = {
			radius: radius,
			widthSegments: widthSegments,
			heightSegments: heightSegments,
			phiStart: phiStart,
			phiLength: phiLength,
			thetaStart: thetaStart,
			thetaLength: thetaLength
		};

widthSegments = Math.max( 3, Math.floor( widthSegments ) );
		heightSegments = Math.max( 2, Math.floor( heightSegments ) );

const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );

let index = 0;
		const grid = [];

const vertex = new Vector3();
		const normal = new Vector3();

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// generate vertices, normals and uvs

for ( let iy = 0; iy <= heightSegments; iy ++ ) {

const verticesRow = [];

const v = iy / heightSegments;

// special case for the poles

let uOffset = 0;

if ( iy === 0 && thetaStart === 0 ) {

uOffset = 0.5 / widthSegments;

} else if ( iy === heightSegments && thetaEnd === Math.PI ) {

uOffset = - 0.5 / widthSegments;

}

for ( let ix = 0; ix <= widthSegments; ix ++ ) {

const u = ix / widthSegments;

// vertex

vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );

vertices.push( vertex.x, vertex.y, vertex.z );

// normal

normal.copy( vertex ).normalize();
				normals.push( normal.x, normal.y, normal.z );

// uv

uvs.push( u + uOffset, 1 - v );

verticesRow.push( index ++ );

}

grid.push( verticesRow );

}

// indices

for ( let iy = 0; iy < heightSegments; iy ++ ) {

for ( let ix = 0; ix < widthSegments; ix ++ ) {

const a = grid[ iy ][ ix + 1 ];
				const b = grid[ iy ][ ix ];
				const c = grid[ iy + 1 ][ ix ];
				const d = grid[ iy + 1 ][ ix + 1 ];

if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );

}

// build geometry

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new SphereGeometry( data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength );

}

class TetrahedronGeometry extends PolyhedronGeometry {

constructor( radius = 1, detail = 0 ) {

const vertices = [
			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
		];

const indices = [
			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
		];

super( vertices, indices, radius, detail );

this.type = 'TetrahedronGeometry';

this.parameters = {
			radius: radius,
			detail: detail
		};

}

static fromJSON( data ) {

return new TetrahedronGeometry( data.radius, data.detail );

}

class TorusGeometry extends BufferGeometry {

constructor( radius = 1, tube = 0.4, radialSegments = 12, tubularSegments = 48, arc = Math.PI * 2 ) {

super();

this.type = 'TorusGeometry';

this.parameters = {
			radius: radius,
			tube: tube,
			radialSegments: radialSegments,
			tubularSegments: tubularSegments,
			arc: arc
		};

radialSegments = Math.floor( radialSegments );
		tubularSegments = Math.floor( tubularSegments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

const center = new Vector3();
		const vertex = new Vector3();
		const normal = new Vector3();

// generate vertices, normals and uvs

for ( let j = 0; j <= radialSegments; j ++ ) {

for ( let i = 0; i <= tubularSegments; i ++ ) {

const u = i / tubularSegments * arc;
				const v = j / radialSegments * Math.PI * 2;

// vertex

vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
				vertex.z = tube * Math.sin( v );

vertices.push( vertex.x, vertex.y, vertex.z );

// normal

center.x = radius * Math.cos( u );
				center.y = radius * Math.sin( u );
				normal.subVectors( vertex, center ).normalize();

normals.push( normal.x, normal.y, normal.z );

// uv

uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );

}

// generate indices

for ( let j = 1; j <= radialSegments; j ++ ) {

for ( let i = 1; i <= tubularSegments; i ++ ) {

// indices

const a = ( tubularSegments + 1 ) * j + i - 1;
				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
				const d = ( tubularSegments + 1 ) * j + i;

// faces

indices.push( a, b, d );
				indices.push( b, c, d );

}

// build geometry

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new TorusGeometry( data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc );

}

class TorusKnotGeometry extends BufferGeometry {

constructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {

super();

this.type = 'TorusKnotGeometry';

this.parameters = {
			radius: radius,
			tube: tube,
			tubularSegments: tubularSegments,
			radialSegments: radialSegments,
			p: p,
			q: q
		};

tubularSegments = Math.floor( tubularSegments );
		radialSegments = Math.floor( radialSegments );

// buffers

const indices = [];
		const vertices = [];
		const normals = [];
		const uvs = [];

// helper variables

const vertex = new Vector3();
		const normal = new Vector3();

const P1 = new Vector3();
		const P2 = new Vector3();

const B = new Vector3();
		const T = new Vector3();
		const N = new Vector3();

// generate vertices, normals and uvs

for ( let i = 0; i <= tubularSegments; ++ i ) {

// the radian "u" is used to calculate the position on the torus curve of the current tubular segment

const u = i / tubularSegments * p * Math.PI * 2;

// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
			// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions

calculatePositionOnCurve( u, p, q, radius, P1 );
			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );

// calculate orthonormal basis

T.subVectors( P2, P1 );
			N.addVectors( P2, P1 );
			B.crossVectors( T, N );
			N.crossVectors( B, T );

// normalize B, N. T can be ignored, we don't use it

B.normalize();
			N.normalize();

for ( let j = 0; j <= radialSegments; ++ j ) {

// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
				// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.

const v = j / radialSegments * Math.PI * 2;
				const cx = - tube * Math.cos( v );
				const cy = tube * Math.sin( v );

// now calculate the final vertex position.
				// first we orient the extrusion with our basis vectors, then we add it to the current position on the curve

vertex.x = P1.x + ( cx * N.x + cy * B.x );
				vertex.y = P1.y + ( cx * N.y + cy * B.y );
				vertex.z = P1.z + ( cx * N.z + cy * B.z );

vertices.push( vertex.x, vertex.y, vertex.z );

// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)

normal.subVectors( vertex, P1 ).normalize();

normals.push( normal.x, normal.y, normal.z );

// uv

uvs.push( i / tubularSegments );
				uvs.push( j / radialSegments );

}

// generate indices

for ( let j = 1; j <= tubularSegments; j ++ ) {

for ( let i = 1; i <= radialSegments; i ++ ) {

// indices

const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
				const b = ( radialSegments + 1 ) * j + ( i - 1 );
				const c = ( radialSegments + 1 ) * j + i;
				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

// faces

indices.push( a, b, d );
				indices.push( b, c, d );

}

// build geometry

// this function calculates the current position on the torus curve

function calculatePositionOnCurve( u, p, q, radius, position ) {

const cu = Math.cos( u );
			const su = Math.sin( u );
			const quOverP = q / p * u;
			const cs = Math.cos( quOverP );

position.x = radius * ( 2 + cs ) * 0.5 * cu;
			position.y = radius * ( 2 + cs ) * su * 0.5;
			position.z = radius * Math.sin( quOverP ) * 0.5;

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

static fromJSON( data ) {

return new TorusKnotGeometry( data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q );

}

class TubeGeometry extends BufferGeometry {

constructor( path = new QuadraticBezierCurve3( new Vector3( - 1, - 1, 0 ), new Vector3( - 1, 1, 0 ), new Vector3( 1, 1, 0 ) ), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {

super();

this.type = 'TubeGeometry';

this.parameters = {
			path: path,
			tubularSegments: tubularSegments,
			radius: radius,
			radialSegments: radialSegments,
			closed: closed
		};

const frames = path.computeFrenetFrames( tubularSegments, closed );

// expose internals

this.tangents = frames.tangents;
		this.normals = frames.normals;
		this.binormals = frames.binormals;

// helper variables

const vertex = new Vector3();
		const normal = new Vector3();
		const uv = new Vector2();
		let P = new Vector3();

// buffer

const vertices = [];
		const normals = [];
		const uvs = [];
		const indices = [];

// create buffer data

generateBufferData();

// build geometry

// functions

function generateBufferData() {

for ( let i = 0; i < tubularSegments; i ++ ) {

generateSegment( i );

}

// if the geometry is not closed, generate the last row of vertices and normals
			// at the regular position on the given path
			//
			// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)

generateSegment( ( closed === false ) ? tubularSegments : 0 );

// uvs are generated in a separate function.
			// this makes it easy compute correct values for closed geometries

generateUVs();

// finally create faces

generateIndices();

}

function generateSegment( i ) {

// we use getPointAt to sample evenly distributed points from the given path

P = path.getPointAt( i / tubularSegments, P );

// retrieve corresponding normal and binormal

const N = frames.normals[ i ];
			const B = frames.binormals[ i ];

// generate normals and vertices for the current segment

for ( let j = 0; j <= radialSegments; j ++ ) {

const v = j / radialSegments * Math.PI * 2;

const sin = Math.sin( v );
				const cos = - Math.cos( v );

// normal

normal.x = ( cos * N.x + sin * B.x );
				normal.y = ( cos * N.y + sin * B.y );
				normal.z = ( cos * N.z + sin * B.z );
				normal.normalize();

normals.push( normal.x, normal.y, normal.z );

// vertex

vertex.x = P.x + radius * normal.x;
				vertex.y = P.y + radius * normal.y;
				vertex.z = P.z + radius * normal.z;

vertices.push( vertex.x, vertex.y, vertex.z );

}

function generateIndices() {

for ( let j = 1; j <= tubularSegments; j ++ ) {

for ( let i = 1; i <= radialSegments; i ++ ) {

const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
					const b = ( radialSegments + 1 ) * j + ( i - 1 );
					const c = ( radialSegments + 1 ) * j + i;
					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;

// faces

indices.push( a, b, d );
					indices.push( b, c, d );

}

function generateUVs() {

for ( let i = 0; i <= tubularSegments; i ++ ) {

for ( let j = 0; j <= radialSegments; j ++ ) {

uv.x = i / tubularSegments;
					uv.y = j / radialSegments;

uvs.push( uv.x, uv.y );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

toJSON() {

const data = super.toJSON();

data.path = this.parameters.path.toJSON();

return data;

}

static fromJSON( data ) {

// This only works for built-in curves (e.g. CatmullRomCurve3).
		// User defined curves or instances of CurvePath will not be deserialized.
		return new TubeGeometry(
			new Curves[ data.path.type ]().fromJSON( data.path ),
			data.tubularSegments,
			data.radius,
			data.radialSegments,
			data.closed
		);

}

class WireframeGeometry extends BufferGeometry {

constructor( geometry = null ) {

super();

this.type = 'WireframeGeometry';

this.parameters = {
			geometry: geometry
		};

if ( geometry !== null ) {

// buffer

const vertices = [];
			const edges = new Set();

// helper variables

const start = new Vector3();
			const end = new Vector3();

if ( geometry.index !== null ) {

// indexed BufferGeometry

const position = geometry.attributes.position;
				const indices = geometry.index;
				let groups = geometry.groups;

if ( groups.length === 0 ) {

groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];

}

// create a data structure that contains all edges without duplicates

for ( let o = 0, ol = groups.length; o < ol; ++ o ) {

const group = groups[ o ];

const groupStart = group.start;
					const groupCount = group.count;

for ( let i = groupStart, l = ( groupStart + groupCount ); i < l; i += 3 ) {

for ( let j = 0; j < 3; j ++ ) {

const index1 = indices.getX( i + j );
							const index2 = indices.getX( i + ( j + 1 ) % 3 );

start.fromBufferAttribute( position, index1 );
							end.fromBufferAttribute( position, index2 );

if ( isUniqueEdge( start, end, edges ) === true ) {

vertices.push( start.x, start.y, start.z );
								vertices.push( end.x, end.y, end.z );

}

} else {

// non-indexed BufferGeometry

const position = geometry.attributes.position;

for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {

for ( let j = 0; j < 3; j ++ ) {

// three edges per triangle, an edge is represented as (index1, index2)
						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)

const index1 = 3 * i + j;
						const index2 = 3 * i + ( ( j + 1 ) % 3 );

start.fromBufferAttribute( position, index1 );
						end.fromBufferAttribute( position, index2 );

if ( isUniqueEdge( start, end, edges ) === true ) {

vertices.push( start.x, start.y, start.z );
							vertices.push( end.x, end.y, end.z );

}

// build geometry

this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );

}

copy( source ) {

super.copy( source );

this.parameters = Object.assign( {}, source.parameters );

return this;

}

function isUniqueEdge( start, end, edges ) {

const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
	const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge

if ( edges.has( hash1 ) === true || edges.has( hash2 ) === true ) {

return false;

} else {

edges.add( hash1 );
		edges.add( hash2 );
		return true;

}

var Geometries = /*#__PURE__*/Object.freeze({
	__proto__: null,
	BoxGeometry: BoxGeometry,
	CapsuleGeometry: CapsuleGeometry,
	CircleGeometry: CircleGeometry,
	ConeGeometry: ConeGeometry,
	CylinderGeometry: CylinderGeometry,
	DodecahedronGeometry: DodecahedronGeometry,
	EdgesGeometry: EdgesGeometry,
	ExtrudeGeometry: ExtrudeGeometry,
	IcosahedronGeometry: IcosahedronGeometry,
	LatheGeometry: LatheGeometry,
	OctahedronGeometry: OctahedronGeometry,
	PlaneGeometry: PlaneGeometry,
	PolyhedronGeometry: PolyhedronGeometry,
	RingGeometry: RingGeometry,
	ShapeGeometry: ShapeGeometry,
	SphereGeometry: SphereGeometry,
	TetrahedronGeometry: TetrahedronGeometry,
	TorusGeometry: TorusGeometry,
	TorusKnotGeometry: TorusKnotGeometry,
	TubeGeometry: TubeGeometry,
	WireframeGeometry: WireframeGeometry
});

class ShadowMaterial extends Material {

constructor( parameters ) {

super();

this.isShadowMaterial = true;

this.type = 'ShadowMaterial';

this.color = new Color( 0x000000 );
		this.transparent = true;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.fog = source.fog;

return this;

}

class RawShaderMaterial extends ShaderMaterial {

constructor( parameters ) {

super( parameters );

this.isRawShaderMaterial = true;

this.type = 'RawShaderMaterial';

}

class MeshStandardMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshStandardMaterial = true;

this.defines = { 'STANDARD': '' };

this.type = 'MeshStandardMaterial';

this.color = new Color( 0xffffff ); // diffuse
		this.roughness = 1.0;
		this.metalness = 0.0;

this.map = null;

this.lightMap = null;
		this.lightMapIntensity = 1.0;

this.aoMap = null;
		this.aoMapIntensity = 1.0;

this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.roughnessMap = null;

this.metalnessMap = null;

this.alphaMap = null;

this.envMap = null;
		this.envMapIntensity = 1.0;

this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

this.flatShading = false;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.defines = { 'STANDARD': '' };

this.color.copy( source.color );
		this.roughness = source.roughness;
		this.metalness = source.metalness;

this.map = source.map;

this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.roughnessMap = source.roughnessMap;

this.metalnessMap = source.metalnessMap;

this.alphaMap = source.alphaMap;

this.envMap = source.envMap;
		this.envMapIntensity = source.envMapIntensity;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

this.flatShading = source.flatShading;

this.fog = source.fog;

return this;

}

class MeshPhysicalMaterial extends MeshStandardMaterial {

constructor( parameters ) {

super();

this.isMeshPhysicalMaterial = true;

this.defines = {

'STANDARD': '',
			'PHYSICAL': ''

};

this.type = 'MeshPhysicalMaterial';

this.clearcoatMap = null;
		this.clearcoatRoughness = 0.0;
		this.clearcoatRoughnessMap = null;
		this.clearcoatNormalScale = new Vector2( 1, 1 );
		this.clearcoatNormalMap = null;

this.ior = 1.5;

Object.defineProperty( this, 'reflectivity', {
			get: function () {

return ( clamp( 2.5 * ( this.ior - 1 ) / ( this.ior + 1 ), 0, 1 ) );

},
			set: function ( reflectivity ) {

this.ior = ( 1 + 0.4 * reflectivity ) / ( 1 - 0.4 * reflectivity );

}
		} );

this.iridescenceMap = null;
		this.iridescenceIOR = 1.3;
		this.iridescenceThicknessRange = [ 100, 400 ];
		this.iridescenceThicknessMap = null;

this.sheenColor = new Color( 0x000000 );
		this.sheenColorMap = null;
		this.sheenRoughness = 1.0;
		this.sheenRoughnessMap = null;

this.transmissionMap = null;

this.thickness = 0;
		this.thicknessMap = null;
		this.attenuationDistance = Infinity;
		this.attenuationColor = new Color( 1, 1, 1 );

this.specularIntensity = 1.0;
		this.specularIntensityMap = null;
		this.specularColor = new Color( 1, 1, 1 );
		this.specularColorMap = null;

this._sheen = 0.0;
		this._clearcoat = 0;
		this._iridescence = 0;
		this._transmission = 0;

this.setValues( parameters );

}

get sheen() {

return this._sheen;

}

set sheen( value ) {

if ( this._sheen > 0 !== value > 0 ) {

this.version ++;

}

this._sheen = value;

}

get clearcoat() {

return this._clearcoat;

}

set clearcoat( value ) {

if ( this._clearcoat > 0 !== value > 0 ) {

this.version ++;

}

this._clearcoat = value;

}

get iridescence() {

return this._iridescence;

}

set iridescence( value ) {

if ( this._iridescence > 0 !== value > 0 ) {

this.version ++;

}

this._iridescence = value;

}

get transmission() {

return this._transmission;

}

set transmission( value ) {

if ( this._transmission > 0 !== value > 0 ) {

this.version ++;

}

this._transmission = value;

}

copy( source ) {

super.copy( source );

this.defines = {

'STANDARD': '',
			'PHYSICAL': ''

};

this.clearcoat = source.clearcoat;
		this.clearcoatMap = source.clearcoatMap;
		this.clearcoatRoughness = source.clearcoatRoughness;
		this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
		this.clearcoatNormalMap = source.clearcoatNormalMap;
		this.clearcoatNormalScale.copy( source.clearcoatNormalScale );

this.ior = source.ior;

this.iridescence = source.iridescence;
		this.iridescenceMap = source.iridescenceMap;
		this.iridescenceIOR = source.iridescenceIOR;
		this.iridescenceThicknessRange = [ ...source.iridescenceThicknessRange ];
		this.iridescenceThicknessMap = source.iridescenceThicknessMap;

this.sheen = source.sheen;
		this.sheenColor.copy( source.sheenColor );
		this.sheenColorMap = source.sheenColorMap;
		this.sheenRoughness = source.sheenRoughness;
		this.sheenRoughnessMap = source.sheenRoughnessMap;

this.transmission = source.transmission;
		this.transmissionMap = source.transmissionMap;

this.thickness = source.thickness;
		this.thicknessMap = source.thicknessMap;
		this.attenuationDistance = source.attenuationDistance;
		this.attenuationColor.copy( source.attenuationColor );

this.specularIntensity = source.specularIntensity;
		this.specularIntensityMap = source.specularIntensityMap;
		this.specularColor.copy( source.specularColor );
		this.specularColorMap = source.specularColorMap;

return this;

}

class MeshPhongMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshPhongMaterial = true;

this.type = 'MeshPhongMaterial';

this.color = new Color( 0xffffff ); // diffuse
		this.specular = new Color( 0x111111 );
		this.shininess = 30;

this.map = null;

this.lightMap = null;
		this.lightMapIntensity = 1.0;

this.aoMap = null;
		this.aoMapIntensity = 1.0;

this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.specularMap = null;

this.alphaMap = null;

this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

this.flatShading = false;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );
		this.specular.copy( source.specular );
		this.shininess = source.shininess;

this.map = source.map;

this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.specularMap = source.specularMap;

this.alphaMap = source.alphaMap;

this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

this.flatShading = source.flatShading;

this.fog = source.fog;

return this;

}

class MeshToonMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshToonMaterial = true;

this.defines = { 'TOON': '' };

this.type = 'MeshToonMaterial';

this.color = new Color( 0xffffff );

this.map = null;
		this.gradientMap = null;

this.lightMap = null;
		this.lightMapIntensity = 1.0;

this.aoMap = null;
		this.aoMapIntensity = 1.0;

this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.alphaMap = null;

this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;
		this.gradientMap = source.gradientMap;

this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.alphaMap = source.alphaMap;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

this.fog = source.fog;

return this;

}

class MeshNormalMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshNormalMaterial = true;

this.type = 'MeshNormalMaterial';

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.wireframe = false;
		this.wireframeLinewidth = 1;

this.flatShading = false;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;

this.flatShading = source.flatShading;

return this;

}

class MeshLambertMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshLambertMaterial = true;

this.type = 'MeshLambertMaterial';

this.color = new Color( 0xffffff ); // diffuse

this.map = null;

this.lightMap = null;
		this.lightMapIntensity = 1.0;

this.aoMap = null;
		this.aoMapIntensity = 1.0;

this.emissive = new Color( 0x000000 );
		this.emissiveIntensity = 1.0;
		this.emissiveMap = null;

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.specularMap = null;

this.alphaMap = null;

this.envMap = null;
		this.combine = MultiplyOperation;
		this.reflectivity = 1;
		this.refractionRatio = 0.98;

this.wireframe = false;
		this.wireframeLinewidth = 1;
		this.wireframeLinecap = 'round';
		this.wireframeLinejoin = 'round';

this.flatShading = false;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.color.copy( source.color );

this.map = source.map;

this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

this.emissive.copy( source.emissive );
		this.emissiveMap = source.emissiveMap;
		this.emissiveIntensity = source.emissiveIntensity;

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.specularMap = source.specularMap;

this.alphaMap = source.alphaMap;

this.envMap = source.envMap;
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

this.flatShading = source.flatShading;

this.fog = source.fog;

return this;

}

class MeshMatcapMaterial extends Material {

constructor( parameters ) {

super();

this.isMeshMatcapMaterial = true;

this.defines = { 'MATCAP': '' };

this.type = 'MeshMatcapMaterial';

this.color = new Color( 0xffffff ); // diffuse

this.matcap = null;

this.map = null;

this.bumpMap = null;
		this.bumpScale = 1;

this.normalMap = null;
		this.normalMapType = TangentSpaceNormalMap;
		this.normalScale = new Vector2( 1, 1 );

this.displacementMap = null;
		this.displacementScale = 1;
		this.displacementBias = 0;

this.alphaMap = null;

this.flatShading = false;

this.fog = true;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.defines = { 'MATCAP': '' };

this.color.copy( source.color );

this.matcap = source.matcap;

this.map = source.map;

this.bumpMap = source.bumpMap;
		this.bumpScale = source.bumpScale;

this.normalMap = source.normalMap;
		this.normalMapType = source.normalMapType;
		this.normalScale.copy( source.normalScale );

this.displacementMap = source.displacementMap;
		this.displacementScale = source.displacementScale;
		this.displacementBias = source.displacementBias;

this.alphaMap = source.alphaMap;

this.flatShading = source.flatShading;

this.fog = source.fog;

return this;

}

class LineDashedMaterial extends LineBasicMaterial {

constructor( parameters ) {

super();

this.isLineDashedMaterial = true;

this.type = 'LineDashedMaterial';

this.scale = 1;
		this.dashSize = 3;
		this.gapSize = 1;

this.setValues( parameters );

}

copy( source ) {

super.copy( source );

this.scale = source.scale;
		this.dashSize = source.dashSize;
		this.gapSize = source.gapSize;

return this;

}

// same as Array.prototype.slice, but also works on typed arrays
function arraySlice( array, from, to ) {

if ( isTypedArray( array ) ) {

// in ios9 array.subarray(from, undefined) will return empty array
		// but array.subarray(from) or array.subarray(from, len) is correct
		return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );

}

return array.slice( from, to );

}

// converts an array to a specific type
function convertArray( array, type, forceClone ) {

if ( ! array || // let 'undefined' and 'null' pass
		! forceClone && array.constructor === type ) return array;

if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {

return new type( array ); // create typed array

}

return Array.prototype.slice.call( array ); // create Array

}

function isTypedArray( object ) {

return ArrayBuffer.isView( object ) &&
		! ( object instanceof DataView );

}

// returns an array by which times and values can be sorted
function getKeyframeOrder( times ) {

function compareTime( i, j ) {

return times[ i ] - times[ j ];

}

const n = times.length;
	const result = new Array( n );
	for ( let i = 0; i !== n; ++ i ) result[ i ] = i;

result.sort( compareTime );

return result;

}

// uses the array previously returned by 'getKeyframeOrder' to sort data
function sortedArray( values, stride, order ) {

const nValues = values.length;
	const result = new values.constructor( nValues );

for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {

const srcOffset = order[ i ] * stride;

for ( let j = 0; j !== stride; ++ j ) {

result[ dstOffset ++ ] = values[ srcOffset + j ];

}

return result;

}

// function for parsing AOS keyframe formats
function flattenJSON( jsonKeys, times, values, valuePropertyName ) {

let i = 1, key = jsonKeys[ 0 ];

while ( key !== undefined && key[ valuePropertyName ] === undefined ) {

key = jsonKeys[ i ++ ];

}

if ( key === undefined ) return; // no data

let value = key[ valuePropertyName ];
	if ( value === undefined ) return; // no data

if ( Array.isArray( value ) ) {

do {

value = key[ valuePropertyName ];

if ( value !== undefined ) {

times.push( key.time );
				values.push.apply( values, value ); // push all elements

}

key = jsonKeys[ i ++ ];

} while ( key !== undefined );

} else if ( value.toArray !== undefined ) {

// ...assume THREE.Math-ish

do {

value = key[ valuePropertyName ];

if ( value !== undefined ) {

times.push( key.time );
				value.toArray( values, values.length );

}

key = jsonKeys[ i ++ ];

} while ( key !== undefined );

} else {

// otherwise push as-is

do {

value = key[ valuePropertyName ];

if ( value !== undefined ) {

times.push( key.time );
				values.push( value );

}

key = jsonKeys[ i ++ ];

} while ( key !== undefined );

}

function subclip( sourceClip, name, startFrame, endFrame, fps = 30 ) {

const clip = sourceClip.clone();

clip.name = name;

const tracks = [];

for ( let i = 0; i < clip.tracks.length; ++ i ) {

const track = clip.tracks[ i ];
		const valueSize = track.getValueSize();

const times = [];
		const values = [];

for ( let j = 0; j < track.times.length; ++ j ) {

const frame = track.times[ j ] * fps;

if ( frame < startFrame || frame >= endFrame ) continue;

times.push( track.times[ j ] );

for ( let k = 0; k < valueSize; ++ k ) {

values.push( track.values[ j * valueSize + k ] );

}

if ( times.length === 0 ) continue;

track.times = convertArray( times, track.times.constructor );
		track.values = convertArray( values, track.values.constructor );

tracks.push( track );

}

clip.tracks = tracks;

// find minimum .times value across all tracks in the trimmed clip

let minStartTime = Infinity;

for ( let i = 0; i < clip.tracks.length; ++ i ) {

if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {

minStartTime = clip.tracks[ i ].times[ 0 ];

}

// shift all tracks such that clip begins at t=0

for ( let i = 0; i < clip.tracks.length; ++ i ) {

clip.tracks[ i ].shift( - 1 * minStartTime );

}

clip.resetDuration();

return clip;

}

function makeClipAdditive( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {

if ( fps <= 0 ) fps = 30;

const numTracks = referenceClip.tracks.length;
	const referenceTime = referenceFrame / fps;

// Make each track's values relative to the values at the reference frame
	for ( let i = 0; i < numTracks; ++ i ) {

const referenceTrack = referenceClip.tracks[ i ];
		const referenceTrackType = referenceTrack.ValueTypeName;

// Skip this track if it's non-numeric
		if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;

// Find the track in the target clip whose name and type matches the reference track
		const targetTrack = targetClip.tracks.find( function ( track ) {

return track.name === referenceTrack.name
				&& track.ValueTypeName === referenceTrackType;

} );

if ( targetTrack === undefined ) continue;

let referenceOffset = 0;
		const referenceValueSize = referenceTrack.getValueSize();

if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

referenceOffset = referenceValueSize / 3;

}

let targetOffset = 0;
		const targetValueSize = targetTrack.getValueSize();

if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {

targetOffset = targetValueSize / 3;

}

const lastIndex = referenceTrack.times.length - 1;
		let referenceValue;

// Find the value to subtract out of the track
		if ( referenceTime <= referenceTrack.times[ 0 ] ) {

// Reference frame is earlier than the first keyframe, so just use the first keyframe
			const startIndex = referenceOffset;
			const endIndex = referenceValueSize - referenceOffset;
			referenceValue = arraySlice( referenceTrack.values, startIndex, endIndex );

} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {

// Reference frame is after the last keyframe, so just use the last keyframe
			const startIndex = lastIndex * referenceValueSize + referenceOffset;
			const endIndex = startIndex + referenceValueSize - referenceOffset;
			referenceValue = arraySlice( referenceTrack.values, startIndex, endIndex );

} else {

// Interpolate to the reference value
			const interpolant = referenceTrack.createInterpolant();
			const startIndex = referenceOffset;
			const endIndex = referenceValueSize - referenceOffset;
			interpolant.evaluate( referenceTime );
			referenceValue = arraySlice( interpolant.resultBuffer, startIndex, endIndex );

}

// Conjugate the quaternion
		if ( referenceTrackType === 'quaternion' ) {

const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
			referenceQuat.toArray( referenceValue );

}

// Subtract the reference value from all of the track values

const numTimes = targetTrack.times.length;
		for ( let j = 0; j < numTimes; ++ j ) {

const valueStart = j * targetValueSize + targetOffset;

if ( referenceTrackType === 'quaternion' ) {

// Multiply the conjugate for quaternion track types
				Quaternion.multiplyQuaternionsFlat(
					targetTrack.values,
					valueStart,
					referenceValue,
					0,
					targetTrack.values,
					valueStart
				);

} else {

const valueEnd = targetValueSize - targetOffset * 2;

// Subtract each value for all other numeric track types
				for ( let k = 0; k < valueEnd; ++ k ) {

targetTrack.values[ valueStart + k ] -= referenceValue[ k ];

}

targetClip.blendMode = AdditiveAnimationBlendMode;

return targetClip;

}

const AnimationUtils = {
	arraySlice: arraySlice,
	convertArray: convertArray,
	isTypedArray: isTypedArray,
	getKeyframeOrder: getKeyframeOrder,
	sortedArray: sortedArray,
	flattenJSON: flattenJSON,
	subclip: subclip,
	makeClipAdditive: makeClipAdditive
};

/**
 * Abstract base class of interpolants over parametric samples.
 *
 * The parameter domain is one dimensional, typically the time or a path
 * along a curve defined by the data.
 *
 * The sample values can have any dimensionality and derived classes may
 * apply special interpretations to the data.
 *
 * This class provides the interval seek in a Template Method, deferring
 * the actual interpolation to derived classes.
 *
 * Time complexity is O(1) for linear access crossing at most two points
 * and O(log N) for random access, where N is the number of positions.
 *
 * References:
 *
 * 		http://www.oodesign.com/template-method-pattern.html
 *
 */

class Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

this.parameterPositions = parameterPositions;
		this._cachedIndex = 0;

this.resultBuffer = resultBuffer !== undefined ?
			resultBuffer : new sampleValues.constructor( sampleSize );
		this.sampleValues = sampleValues;
		this.valueSize = sampleSize;

this.settings = null;
		this.DefaultSettings_ = {};

}

evaluate( t ) {

const pp = this.parameterPositions;
		let i1 = this._cachedIndex,
			t1 = pp[ i1 ],
			t0 = pp[ i1 - 1 ];

validate_interval: {

seek: {

let right;

linear_scan: {

//- See http://jsperf.com/comparison-to-undefined/3
					//- slower code:
					//-
					//- 				if ( t >= t1 || t1 === undefined ) {
					forward_scan: if ( ! ( t < t1 ) ) {

for ( let giveUpAt = i1 + 2; ; ) {

if ( t1 === undefined ) {

if ( t < t0 ) break forward_scan;

// after end

i1 = pp.length;
								this._cachedIndex = i1;
								return this.copySampleValue_( i1 - 1 );

}

if ( i1 === giveUpAt ) break; // this loop

t0 = t1;
							t1 = pp[ ++ i1 ];

if ( t < t1 ) {

// we have arrived at the sought interval
								break seek;

}

// prepare binary search on the right side of the index
						right = pp.length;
						break linear_scan;

}

//- slower code:
					//-					if ( t < t0 || t0 === undefined ) {
					if ( ! ( t >= t0 ) ) {

// looping?

const t1global = pp[ 1 ];

if ( t < t1global ) {

i1 = 2; // + 1, using the scan for the details
							t0 = t1global;

}

// linear reverse scan

for ( let giveUpAt = i1 - 2; ; ) {

if ( t0 === undefined ) {

// before start

this._cachedIndex = 0;
								return this.copySampleValue_( 0 );

}

if ( i1 === giveUpAt ) break; // this loop

t1 = t0;
							t0 = pp[ -- i1 - 1 ];

if ( t >= t0 ) {

// we have arrived at the sought interval
								break seek;

}

// prepare binary search on the left side of the index
						right = i1;
						i1 = 0;
						break linear_scan;

}

// the interval is valid

break validate_interval;

} // linear scan

// binary search

while ( i1 < right ) {

const mid = ( i1 + right ) >>> 1;

if ( t < pp[ mid ] ) {

right = mid;

} else {

i1 = mid + 1;

}

t1 = pp[ i1 ];
				t0 = pp[ i1 - 1 ];

// check boundary cases, again

if ( t0 === undefined ) {

this._cachedIndex = 0;
					return this.copySampleValue_( 0 );

}

if ( t1 === undefined ) {

i1 = pp.length;
					this._cachedIndex = i1;
					return this.copySampleValue_( i1 - 1 );

}

} // seek

this._cachedIndex = i1;

this.intervalChanged_( i1, t0, t1 );

} // validate_interval

return this.interpolate_( i1, t0, t, t1 );

}

getSettings_() {

return this.settings || this.DefaultSettings_;

}

copySampleValue_( index ) {

// copies a sample value to the result buffer

const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			offset = index * stride;

for ( let i = 0; i !== stride; ++ i ) {

result[ i ] = values[ offset + i ];

}

return result;

}

// Template methods for derived classes:

interpolate_( /* i1, t0, t, t1 */ ) {

throw new Error( 'call to abstract method' );
		// implementations shall return this.resultBuffer

}

intervalChanged_( /* i1, t0, t1 */ ) {

// empty

}

/**
 * Fast and simple cubic spline interpolant.
 *
 * It was derived from a Hermitian construction setting the first derivative
 * at each sample position to the linear slope between neighboring positions
 * over their parameter interval.
 */

class CubicInterpolant extends Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

super( parameterPositions, sampleValues, sampleSize, resultBuffer );

this._weightPrev = - 0;
		this._offsetPrev = - 0;
		this._weightNext = - 0;
		this._offsetNext = - 0;

this.DefaultSettings_ = {

endingStart: ZeroCurvatureEnding,
			endingEnd: ZeroCurvatureEnding

};

}

intervalChanged_( i1, t0, t1 ) {

const pp = this.parameterPositions;
		let iPrev = i1 - 2,
			iNext = i1 + 1,

tPrev = pp[ iPrev ],
			tNext = pp[ iNext ];

if ( tPrev === undefined ) {

switch ( this.getSettings_().endingStart ) {

case ZeroSlopeEnding:

// f'(t0) = 0
					iPrev = i1;
					tPrev = 2 * t0 - t1;

break;

case WrapAroundEnding:

// use the other end of the curve
					iPrev = pp.length - 2;
					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];

break;

default: // ZeroCurvatureEnding

// f''(t0) = 0 a.k.a. Natural Spline
					iPrev = i1;
					tPrev = t1;

}

if ( tNext === undefined ) {

switch ( this.getSettings_().endingEnd ) {

case ZeroSlopeEnding:

// f'(tN) = 0
					iNext = i1;
					tNext = 2 * t1 - t0;

break;

case WrapAroundEnding:

// use the other end of the curve
					iNext = 1;
					tNext = t1 + pp[ 1 ] - pp[ 0 ];

break;

default: // ZeroCurvatureEnding

// f''(tN) = 0, a.k.a. Natural Spline
					iNext = i1 - 1;
					tNext = t0;

}

const halfDt = ( t1 - t0 ) * 0.5,
			stride = this.valueSize;

this._weightPrev = halfDt / ( t0 - tPrev );
		this._weightNext = halfDt / ( tNext - t1 );
		this._offsetPrev = iPrev * stride;
		this._offsetNext = iNext * stride;

}

interpolate_( i1, t0, t, t1 ) {

const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

o1 = i1 * stride,		o0 = o1 - stride,
			oP = this._offsetPrev, 	oN = this._offsetNext,
			wP = this._weightPrev,	wN = this._weightNext,

p = ( t - t0 ) / ( t1 - t0 ),
			pp = p * p,
			ppp = pp * p;

// evaluate polynomials

const sP = - wP * ppp + 2 * wP * pp - wP * p;
		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
		const sN = wN * ppp - wN * pp;

// combine data linearly

for ( let i = 0; i !== stride; ++ i ) {

result[ i ] =
					sP * values[ oP + i ] +
					s0 * values[ o0 + i ] +
					s1 * values[ o1 + i ] +
					sN * values[ oN + i ];

}

return result;

}

class LinearInterpolant extends Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

super( parameterPositions, sampleValues, sampleSize, resultBuffer );

}

interpolate_( i1, t0, t, t1 ) {

const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

offset1 = i1 * stride,
			offset0 = offset1 - stride,

weight1 = ( t - t0 ) / ( t1 - t0 ),
			weight0 = 1 - weight1;

for ( let i = 0; i !== stride; ++ i ) {

result[ i ] =
					values[ offset0 + i ] * weight0 +
					values[ offset1 + i ] * weight1;

}

return result;

}

/**
 *
 * Interpolant that evaluates to the sample value at the position preceding
 * the parameter.
 */

class DiscreteInterpolant extends Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

super( parameterPositions, sampleValues, sampleSize, resultBuffer );

}

interpolate_( i1 /*, t0, t, t1 */ ) {

return this.copySampleValue_( i1 - 1 );

}

class KeyframeTrack {

constructor( name, times, values, interpolation ) {

if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
		if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );

this.name = name;

this.times = convertArray( times, this.TimeBufferType );
		this.values = convertArray( values, this.ValueBufferType );

this.setInterpolation( interpolation || this.DefaultInterpolation );

}

// Serialization (in static context, because of constructor invocation
	// and automatic invocation of .toJSON):

static toJSON( track ) {

const trackType = track.constructor;

let json;

// derived classes can define a static toJSON method
		if ( trackType.toJSON !== this.toJSON ) {

json = trackType.toJSON( track );

} else {

// by default, we assume the data can be serialized as-is
			json = {

'name': track.name,
				'times': convertArray( track.times, Array ),
				'values': convertArray( track.values, Array )

};

const interpolation = track.getInterpolation();

if ( interpolation !== track.DefaultInterpolation ) {

json.interpolation = interpolation;

}

json.type = track.ValueTypeName; // mandatory

return json;

}

InterpolantFactoryMethodDiscrete( result ) {

return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );

}

InterpolantFactoryMethodLinear( result ) {

return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );

}

InterpolantFactoryMethodSmooth( result ) {

return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );

}

setInterpolation( interpolation ) {

let factoryMethod;

switch ( interpolation ) {

case InterpolateDiscrete:

factoryMethod = this.InterpolantFactoryMethodDiscrete;

break;

case InterpolateLinear:

factoryMethod = this.InterpolantFactoryMethodLinear;

break;

case InterpolateSmooth:

factoryMethod = this.InterpolantFactoryMethodSmooth;

break;

}

if ( factoryMethod === undefined ) {

const message = 'unsupported interpolation for ' +
				this.ValueTypeName + ' keyframe track named ' + this.name;

if ( this.createInterpolant === undefined ) {

// fall back to default, unless the default itself is messed up
				if ( interpolation !== this.DefaultInterpolation ) {

this.setInterpolation( this.DefaultInterpolation );

} else {

throw new Error( message ); // fatal, in this case

}

console.warn( 'THREE.KeyframeTrack:', message );
			return this;

}

this.createInterpolant = factoryMethod;

return this;

}

getInterpolation() {

switch ( this.createInterpolant ) {

case this.InterpolantFactoryMethodDiscrete:

return InterpolateDiscrete;

case this.InterpolantFactoryMethodLinear:

return InterpolateLinear;

case this.InterpolantFactoryMethodSmooth:

return InterpolateSmooth;

}

getValueSize() {

return this.values.length / this.times.length;

}

// move all keyframes either forwards or backwards in time
	shift( timeOffset ) {

if ( timeOffset !== 0.0 ) {

const times = this.times;

for ( let i = 0, n = times.length; i !== n; ++ i ) {

times[ i ] += timeOffset;

}

return this;

}

// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
	scale( timeScale ) {

if ( timeScale !== 1.0 ) {

const times = this.times;

for ( let i = 0, n = times.length; i !== n; ++ i ) {

times[ i ] *= timeScale;

}

return this;

}

// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
	// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
	trim( startTime, endTime ) {

const times = this.times,
			nKeys = times.length;

let from = 0,
			to = nKeys - 1;

while ( from !== nKeys && times[ from ] < startTime ) {

++ from;

}

while ( to !== - 1 && times[ to ] > endTime ) {

-- to;

}

++ to; // inclusive -> exclusive bound

if ( from !== 0 || to !== nKeys ) {

// empty tracks are forbidden, so keep at least one keyframe
			if ( from >= to ) {

to = Math.max( to, 1 );
				from = to - 1;

}

const stride = this.getValueSize();
			this.times = arraySlice( times, from, to );
			this.values = arraySlice( this.values, from * stride, to * stride );

}

return this;

}

// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
	validate() {

let valid = true;

const valueSize = this.getValueSize();
		if ( valueSize - Math.floor( valueSize ) !== 0 ) {

console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
			valid = false;

}

const times = this.times,
			values = this.values,

nKeys = times.length;

if ( nKeys === 0 ) {

console.error( 'THREE.KeyframeTrack: Track is empty.', this );
			valid = false;

}

let prevTime = null;

for ( let i = 0; i !== nKeys; i ++ ) {

const currTime = times[ i ];

if ( typeof currTime === 'number' && isNaN( currTime ) ) {

console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
				valid = false;
				break;

}

if ( prevTime !== null && prevTime > currTime ) {

console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
				valid = false;
				break;

}

prevTime = currTime;

}

if ( values !== undefined ) {

if ( isTypedArray( values ) ) {

for ( let i = 0, n = values.length; i !== n; ++ i ) {

const value = values[ i ];

if ( isNaN( value ) ) {

console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
						valid = false;
						break;

}

return valid;

}

// removes equivalent sequential keys as common in morph target sequences
	// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
	optimize() {

// times or values may be shared with other tracks, so overwriting is unsafe
		const times = arraySlice( this.times ),
			values = arraySlice( this.values ),
			stride = this.getValueSize(),

smoothInterpolation = this.getInterpolation() === InterpolateSmooth,

lastIndex = times.length - 1;

let writeIndex = 1;

for ( let i = 1; i < lastIndex; ++ i ) {

let keep = false;

const time = times[ i ];
			const timeNext = times[ i + 1 ];

// remove adjacent keyframes scheduled at the same time

if ( time !== timeNext && ( i !== 1 || time !== times[ 0 ] ) ) {

if ( ! smoothInterpolation ) {

// remove unnecessary keyframes same as their neighbors

const offset = i * stride,
						offsetP = offset - stride,
						offsetN = offset + stride;

for ( let j = 0; j !== stride; ++ j ) {

const value = values[ offset + j ];

if ( value !== values[ offsetP + j ] ||
							value !== values[ offsetN + j ] ) {

keep = true;
							break;

}

} else {

keep = true;

}

// in-place compaction

if ( keep ) {

if ( i !== writeIndex ) {

times[ writeIndex ] = times[ i ];

const readOffset = i * stride,
						writeOffset = writeIndex * stride;

for ( let j = 0; j !== stride; ++ j ) {

values[ writeOffset + j ] = values[ readOffset + j ];

}

++ writeIndex;

}

// flush last keyframe (compaction looks ahead)

if ( lastIndex > 0 ) {

times[ writeIndex ] = times[ lastIndex ];

for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {

values[ writeOffset + j ] = values[ readOffset + j ];

}

++ writeIndex;

}

if ( writeIndex !== times.length ) {

this.times = arraySlice( times, 0, writeIndex );
			this.values = arraySlice( values, 0, writeIndex * stride );

} else {

this.times = times;
			this.values = values;

}

return this;

}

clone() {

const times = arraySlice( this.times, 0 );
		const values = arraySlice( this.values, 0 );

const TypedKeyframeTrack = this.constructor;
		const track = new TypedKeyframeTrack( this.name, times, values );

// Interpolant argument to constructor is not saved, so copy the factory method directly.
		track.createInterpolant = this.createInterpolant;

return track;

}

KeyframeTrack.prototype.TimeBufferType = Float32Array;
KeyframeTrack.prototype.ValueBufferType = Float32Array;
KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;

/**
 * A Track of Boolean keyframe values.
 */
class BooleanKeyframeTrack extends KeyframeTrack {}

BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
BooleanKeyframeTrack.prototype.ValueBufferType = Array;
BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track of keyframe values that represent color.
 */
class ColorKeyframeTrack extends KeyframeTrack {}

ColorKeyframeTrack.prototype.ValueTypeName = 'color';

/**
 * A Track of numeric keyframe values.
 */
class NumberKeyframeTrack extends KeyframeTrack {}

NumberKeyframeTrack.prototype.ValueTypeName = 'number';

/**
 * Spherical linear unit quaternion interpolant.
 */

class QuaternionLinearInterpolant extends Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

super( parameterPositions, sampleValues, sampleSize, resultBuffer );

}

interpolate_( i1, t0, t, t1 ) {

const result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

alpha = ( t - t0 ) / ( t1 - t0 );

let offset = i1 * stride;

for ( let end = offset + stride; offset !== end; offset += 4 ) {

Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );

}

return result;

}

/**
 * A Track of quaternion keyframe values.
 */
class QuaternionKeyframeTrack extends KeyframeTrack {

InterpolantFactoryMethodLinear( result ) {

return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );

}

QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion';
// ValueBufferType is inherited
QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track that interpolates Strings
 */
class StringKeyframeTrack extends KeyframeTrack {}

StringKeyframeTrack.prototype.ValueTypeName = 'string';
StringKeyframeTrack.prototype.ValueBufferType = Array;
StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;

/**
 * A Track of vectored keyframe values.
 */
class VectorKeyframeTrack extends KeyframeTrack {}

VectorKeyframeTrack.prototype.ValueTypeName = 'vector';

class AnimationClip {

constructor( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {

this.name = name;
		this.tracks = tracks;
		this.duration = duration;
		this.blendMode = blendMode;

this.uuid = generateUUID();

// this means it should figure out its duration by scanning the tracks
		if ( this.duration < 0 ) {

this.resetDuration();

}

static parse( json ) {

const tracks = [],
			jsonTracks = json.tracks,
			frameTime = 1.0 / ( json.fps || 1.0 );

for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {

tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );

}

const clip = new this( json.name, json.duration, tracks, json.blendMode );
		clip.uuid = json.uuid;

return clip;

}

static toJSON( clip ) {

const tracks = [],
			clipTracks = clip.tracks;

const json = {

'name': clip.name,
			'duration': clip.duration,
			'tracks': tracks,
			'uuid': clip.uuid,
			'blendMode': clip.blendMode

};

for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {

tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );

}

return json;

}

static CreateFromMorphTargetSequence( name, morphTargetSequence, fps, noLoop ) {

const numMorphTargets = morphTargetSequence.length;
		const tracks = [];

for ( let i = 0; i < numMorphTargets; i ++ ) {

let times = [];
			let values = [];

times.push(
				( i + numMorphTargets - 1 ) % numMorphTargets,
				i,
				( i + 1 ) % numMorphTargets );

values.push( 0, 1, 0 );

const order = getKeyframeOrder( times );
			times = sortedArray( times, 1, order );
			values = sortedArray( values, 1, order );

// if there is a key at the first frame, duplicate it as the
			// last frame as well for perfect loop.
			if ( ! noLoop && times[ 0 ] === 0 ) {

times.push( numMorphTargets );
				values.push( values[ 0 ] );

}

tracks.push(
				new NumberKeyframeTrack(
					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
					times, values
				).scale( 1.0 / fps ) );

}

return new this( name, - 1, tracks );

}

static findByName( objectOrClipArray, name ) {

let clipArray = objectOrClipArray;

if ( ! Array.isArray( objectOrClipArray ) ) {

const o = objectOrClipArray;
			clipArray = o.geometry && o.geometry.animations || o.animations;

}

for ( let i = 0; i < clipArray.length; i ++ ) {

if ( clipArray[ i ].name === name ) {

return clipArray[ i ];

}

return null;

}

static CreateClipsFromMorphTargetSequences( morphTargets, fps, noLoop ) {

const animationToMorphTargets = {};

// tested with https://regex101.com/ on trick sequences
		// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
		const pattern = /^([\w-]*?)([\d]+)$/;

// sort morph target names into animation groups based
		// patterns like Walk_001, Walk_002, Run_001, Run_002
		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {

const morphTarget = morphTargets[ i ];
			const parts = morphTarget.name.match( pattern );

if ( parts && parts.length > 1 ) {

const name = parts[ 1 ];

let animationMorphTargets = animationToMorphTargets[ name ];

if ( ! animationMorphTargets ) {

animationToMorphTargets[ name ] = animationMorphTargets = [];

}

animationMorphTargets.push( morphTarget );

}

const clips = [];

for ( const name in animationToMorphTargets ) {

clips.push( this.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );

}

return clips;

}

// parse the animation.hierarchy format
	static parseAnimation( animation, bones ) {

if ( ! animation ) {

console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
			return null;

}

const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {

// only return track if there are actually keys.
			if ( animationKeys.length !== 0 ) {

const times = [];
				const values = [];

flattenJSON( animationKeys, times, values, propertyName );

// empty keys are filtered out, so check again
				if ( times.length !== 0 ) {

destTracks.push( new trackType( trackName, times, values ) );

}

};

const tracks = [];

const clipName = animation.name || 'default';
		const fps = animation.fps || 30;
		const blendMode = animation.blendMode;

// automatic length determination in AnimationClip.
		let duration = animation.length || - 1;

const hierarchyTracks = animation.hierarchy || [];

for ( let h = 0; h < hierarchyTracks.length; h ++ ) {

const animationKeys = hierarchyTracks[ h ].keys;

// skip empty tracks
			if ( ! animationKeys || animationKeys.length === 0 ) continue;

// process morph targets
			if ( animationKeys[ 0 ].morphTargets ) {

// figure out all morph targets used in this track
				const morphTargetNames = {};

let k;

for ( k = 0; k < animationKeys.length; k ++ ) {

if ( animationKeys[ k ].morphTargets ) {

for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {

morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;

}

// create a track for each morph target with all zero
				// morphTargetInfluences except for the keys in which
				// the morphTarget is named.
				for ( const morphTargetName in morphTargetNames ) {

const times = [];
					const values = [];

for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {

const animationKey = animationKeys[ k ];

times.push( animationKey.time );
						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );

}

tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );

}

duration = morphTargetNames.length * fps;

} else {

// ...assume skeletal animation

const boneName = '.bones[' + bones[ h ].name + ']';

addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.position',
					animationKeys, 'pos', tracks );

addNonemptyTrack(
					QuaternionKeyframeTrack, boneName + '.quaternion',
					animationKeys, 'rot', tracks );

addNonemptyTrack(
					VectorKeyframeTrack, boneName + '.scale',
					animationKeys, 'scl', tracks );

}

if ( tracks.length === 0 ) {

return null;

}

const clip = new this( clipName, duration, tracks, blendMode );

return clip;

}

resetDuration() {

const tracks = this.tracks;
		let duration = 0;

for ( let i = 0, n = tracks.length; i !== n; ++ i ) {

const track = this.tracks[ i ];

duration = Math.max( duration, track.times[ track.times.length - 1 ] );

}

this.duration = duration;

return this;

}

trim() {

for ( let i = 0; i < this.tracks.length; i ++ ) {

this.tracks[ i ].trim( 0, this.duration );

}

return this;

}

validate() {

let valid = true;

for ( let i = 0; i < this.tracks.length; i ++ ) {

valid = valid && this.tracks[ i ].validate();

}

return valid;

}

optimize() {

for ( let i = 0; i < this.tracks.length; i ++ ) {

this.tracks[ i ].optimize();

}

return this;

}

clone() {

const tracks = [];

for ( let i = 0; i < this.tracks.length; i ++ ) {

tracks.push( this.tracks[ i ].clone() );

}

return new this.constructor( this.name, this.duration, tracks, this.blendMode );

}

toJSON() {

return this.constructor.toJSON( this );

}

function getTrackTypeForValueTypeName( typeName ) {

switch ( typeName.toLowerCase() ) {

case 'scalar':
		case 'double':
		case 'float':
		case 'number':
		case 'integer':

return NumberKeyframeTrack;

case 'vector':
		case 'vector2':
		case 'vector3':
		case 'vector4':

return VectorKeyframeTrack;

case 'color':

return ColorKeyframeTrack;

case 'quaternion':

return QuaternionKeyframeTrack;

case 'bool':
		case 'boolean':

return BooleanKeyframeTrack;

case 'string':

return StringKeyframeTrack;

}

throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );

}

function parseKeyframeTrack( json ) {

if ( json.type === undefined ) {

throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );

}

const trackType = getTrackTypeForValueTypeName( json.type );

if ( json.times === undefined ) {

const times = [], values = [];

flattenJSON( json.keys, times, values, 'value' );

json.times = times;
		json.values = values;

}

// derived classes can define a static parse method
	if ( trackType.parse !== undefined ) {

return trackType.parse( json );

} else {

// by default, we assume a constructor compatible with the base
		return new trackType( json.name, json.times, json.values, json.interpolation );

}

const Cache = {

enabled: false,

files: {},

add: function ( key, file ) {

if ( this.enabled === false ) return;

// console.log( 'THREE.Cache', 'Adding key:', key );

this.files[ key ] = file;

get: function ( key ) {

if ( this.enabled === false ) return;

// console.log( 'THREE.Cache', 'Checking key:', key );

return this.files[ key ];

remove: function ( key ) {

delete this.files[ key ];

clear: function () {

this.files = {};

}

};

class LoadingManager {

constructor( onLoad, onProgress, onError ) {

const scope = this;

let isLoading = false;
		let itemsLoaded = 0;
		let itemsTotal = 0;
		let urlModifier = undefined;
		const handlers = [];

// Refer to #5689 for the reason why we don't set .onStart
		// in the constructor

this.onStart = undefined;
		this.onLoad = onLoad;
		this.onProgress = onProgress;
		this.onError = onError;

this.itemStart = function ( url ) {

itemsTotal ++;

if ( isLoading === false ) {

if ( scope.onStart !== undefined ) {

scope.onStart( url, itemsLoaded, itemsTotal );

}

isLoading = true;

};

this.itemEnd = function ( url ) {

itemsLoaded ++;

if ( scope.onProgress !== undefined ) {

scope.onProgress( url, itemsLoaded, itemsTotal );

}

if ( itemsLoaded === itemsTotal ) {

isLoading = false;

if ( scope.onLoad !== undefined ) {

scope.onLoad();

}

};

this.itemError = function ( url ) {

if ( scope.onError !== undefined ) {

scope.onError( url );

}

};

this.resolveURL = function ( url ) {

if ( urlModifier ) {

return urlModifier( url );

}

return url;

};

this.setURLModifier = function ( transform ) {

urlModifier = transform;

return this;

};

this.addHandler = function ( regex, loader ) {

handlers.push( regex, loader );

return this;

};

this.removeHandler = function ( regex ) {

const index = handlers.indexOf( regex );

if ( index !== - 1 ) {

handlers.splice( index, 2 );

}

return this;

};

this.getHandler = function ( file ) {

for ( let i = 0, l = handlers.length; i < l; i += 2 ) {

const regex = handlers[ i ];
				const loader = handlers[ i + 1 ];

if ( regex.global ) regex.lastIndex = 0; // see #17920

if ( regex.test( file ) ) {

return loader;

}

return null;

};

}

const DefaultLoadingManager = /*@__PURE__*/ new LoadingManager();

class Loader {

constructor( manager ) {

this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;

this.crossOrigin = 'anonymous';
		this.withCredentials = false;
		this.path = '';
		this.resourcePath = '';
		this.requestHeader = {};

}

load( /* url, onLoad, onProgress, onError */ ) {}

loadAsync( url, onProgress ) {

const scope = this;

return new Promise( function ( resolve, reject ) {

scope.load( url, resolve, onProgress, reject );

} );

}

parse( /* data */ ) {}

setCrossOrigin( crossOrigin ) {

this.crossOrigin = crossOrigin;
		return this;

}

setWithCredentials( value ) {

this.withCredentials = value;
		return this;

}

setPath( path ) {

this.path = path;
		return this;

}

setResourcePath( resourcePath ) {

this.resourcePath = resourcePath;
		return this;

}

setRequestHeader( requestHeader ) {

this.requestHeader = requestHeader;
		return this;

}

const loading = {};

class HttpError extends Error {

constructor( message, response ) {

super( message );
		this.response = response;

}

class FileLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

if ( url === undefined ) url = '';

if ( this.path !== undefined ) url = this.path + url;

url = this.manager.resolveURL( url );

const cached = Cache.get( url );

if ( cached !== undefined ) {

this.manager.itemStart( url );

setTimeout( () => {

if ( onLoad ) onLoad( cached );

this.manager.itemEnd( url );

}, 0 );

return cached;

}

// Check if request is duplicate

if ( loading[ url ] !== undefined ) {

loading[ url ].push( {

onLoad: onLoad,
				onProgress: onProgress,
				onError: onError

} );

return;

}

// Initialise array for duplicate requests
		loading[ url ] = [];

loading[ url ].push( {
			onLoad: onLoad,
			onProgress: onProgress,
			onError: onError,
		} );

// create request
		const req = new Request( url, {
			headers: new Headers( this.requestHeader ),
			credentials: this.withCredentials ? 'include' : 'same-origin',
			// An abort controller could be added within a future PR
		} );

// record states ( avoid data race )
		const mimeType = this.mimeType;
		const responseType = this.responseType;

// start the fetch
		fetch( req )
			.then( response => {

if ( response.status === 200 || response.status === 0 ) {

// Some browsers return HTTP Status 0 when using non-http protocol
					// e.g. 'file://' or 'data://'. Handle as success.

if ( response.status === 0 ) {

console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );

}

// Workaround: Checking if response.body === undefined for Alipay browser #23548

if ( typeof ReadableStream === 'undefined' || response.body === undefined || response.body.getReader === undefined ) {

return response;

}

const callbacks = loading[ url ];
					const reader = response.body.getReader();

// Nginx needs X-File-Size check
					// https://serverfault.com/questions/482875/why-does-nginx-remove-content-length-header-for-chunked-content
					const contentLength = response.headers.get( 'Content-Length' ) || response.headers.get( 'X-File-Size' );
					const total = contentLength ? parseInt( contentLength ) : 0;
					const lengthComputable = total !== 0;
					let loaded = 0;

// periodically read data into the new stream tracking while download progress
					const stream = new ReadableStream( {
						start( controller ) {

readData();

function readData() {

reader.read().then( ( { done, value } ) => {

if ( done ) {

controller.close();

} else {

loaded += value.byteLength;

const event = new ProgressEvent( 'progress', { lengthComputable, loaded, total } );
										for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

const callback = callbacks[ i ];
											if ( callback.onProgress ) callback.onProgress( event );

}

controller.enqueue( value );
										readData();

}

} );

}

} );

return new Response( stream );

} else {

throw new HttpError( `fetch for "${response.url}" responded with ${response.status}: ${response.statusText}`, response );

}

} )
			.then( response => {

switch ( responseType ) {

case 'arraybuffer':

return response.arrayBuffer();

case 'blob':

return response.blob();

case 'document':

return response.text()
							.then( text => {

const parser = new DOMParser();
								return parser.parseFromString( text, mimeType );

} );

case 'json':

return response.json();

default:

if ( mimeType === undefined ) {

return response.text();

} else {

// sniff encoding
							const re = /charset="?([^;"\s]*)"?/i;
							const exec = re.exec( mimeType );
							const label = exec && exec[ 1 ] ? exec[ 1 ].toLowerCase() : undefined;
							const decoder = new TextDecoder( label );
							return response.arrayBuffer().then( ab => decoder.decode( ab ) );

}

} )
			.then( data => {

// Add to cache only on HTTP success, so that we do not cache
				// error response bodies as proper responses to requests.
				Cache.add( url, data );

const callbacks = loading[ url ];
				delete loading[ url ];

for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

const callback = callbacks[ i ];
					if ( callback.onLoad ) callback.onLoad( data );

}

} )
			.catch( err => {

// Abort errors and other errors are handled the same

const callbacks = loading[ url ];

if ( callbacks === undefined ) {

// When onLoad was called and url was deleted in `loading`
					this.manager.itemError( url );
					throw err;

}

delete loading[ url ];

for ( let i = 0, il = callbacks.length; i < il; i ++ ) {

const callback = callbacks[ i ];
					if ( callback.onError ) callback.onError( err );

}

this.manager.itemError( url );

} )
			.finally( () => {

this.manager.itemEnd( url );

} );

this.manager.itemStart( url );

}

setResponseType( value ) {

this.responseType = value;
		return this;

}

setMimeType( value ) {

this.mimeType = value;
		return this;

}

class AnimationLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( text ) {

try {

onLoad( scope.parse( JSON.parse( text ) ) );

} catch ( e ) {

if ( onError ) {

onError( e );

} else {

console.error( e );

}

scope.manager.itemError( url );

}

}, onProgress, onError );

}

parse( json ) {

const animations = [];

for ( let i = 0; i < json.length; i ++ ) {

const clip = AnimationClip.parse( json[ i ] );

animations.push( clip );

}

return animations;

}

/**
 * Abstract Base class to block based textures loader (dds, pvr, ...)
 *
 * Sub classes have to implement the parse() method which will be used in load().
 */

class CompressedTextureLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const images = [];

const texture = new CompressedTexture();

const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( scope.withCredentials );

let loaded = 0;

function loadTexture( i ) {

loader.load( url[ i ], function ( buffer ) {

const texDatas = scope.parse( buffer, true );

images[ i ] = {
					width: texDatas.width,
					height: texDatas.height,
					format: texDatas.format,
					mipmaps: texDatas.mipmaps
				};

loaded += 1;

if ( loaded === 6 ) {

if ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;

texture.image = images;
					texture.format = texDatas.format;
					texture.needsUpdate = true;

if ( onLoad ) onLoad( texture );

}

}, onProgress, onError );

}

if ( Array.isArray( url ) ) {

for ( let i = 0, il = url.length; i < il; ++ i ) {

loadTexture( i );

}

} else {

// compressed cubemap texture stored in a single DDS file

loader.load( url, function ( buffer ) {

const texDatas = scope.parse( buffer, true );

if ( texDatas.isCubemap ) {

const faces = texDatas.mipmaps.length / texDatas.mipmapCount;

for ( let f = 0; f < faces; f ++ ) {

images[ f ] = { mipmaps: [] };

for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {

images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
							images[ f ].format = texDatas.format;
							images[ f ].width = texDatas.width;
							images[ f ].height = texDatas.height;

}

texture.image = images;

} else {

texture.image.width = texDatas.width;
					texture.image.height = texDatas.height;
					texture.mipmaps = texDatas.mipmaps;

}

if ( texDatas.mipmapCount === 1 ) {

texture.minFilter = LinearFilter;

}

texture.format = texDatas.format;
				texture.needsUpdate = true;

if ( onLoad ) onLoad( texture );

}, onProgress, onError );

}

return texture;

}

class ImageLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

if ( this.path !== undefined ) url = this.path + url;

url = this.manager.resolveURL( url );

const scope = this;

const cached = Cache.get( url );

if ( cached !== undefined ) {

scope.manager.itemStart( url );

setTimeout( function () {

if ( onLoad ) onLoad( cached );

scope.manager.itemEnd( url );

}, 0 );

return cached;

}

const image = createElementNS( 'img' );

function onImageLoad() {

removeEventListeners();

Cache.add( url, this );

if ( onLoad ) onLoad( this );

scope.manager.itemEnd( url );

}

function onImageError( event ) {

removeEventListeners();

if ( onError ) onError( event );

scope.manager.itemError( url );
			scope.manager.itemEnd( url );

}

function removeEventListeners() {

image.removeEventListener( 'load', onImageLoad, false );
			image.removeEventListener( 'error', onImageError, false );

}

image.addEventListener( 'load', onImageLoad, false );
		image.addEventListener( 'error', onImageError, false );

if ( url.slice( 0, 5 ) !== 'data:' ) {

if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;

}

scope.manager.itemStart( url );

image.src = url;

return image;

}

class CubeTextureLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( urls, onLoad, onProgress, onError ) {

const texture = new CubeTexture();

const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );

let loaded = 0;

function loadTexture( i ) {

loader.load( urls[ i ], function ( image ) {

texture.images[ i ] = image;

loaded ++;

if ( loaded === 6 ) {

texture.needsUpdate = true;

if ( onLoad ) onLoad( texture );

}

}, undefined, onError );

}

for ( let i = 0; i < urls.length; ++ i ) {

loadTexture( i );

}

return texture;

}

/**
 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
 *
 * Sub classes have to implement the parse() method which will be used in load().
 */

class DataTextureLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const texture = new DataTexture();

const loader = new FileLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setPath( this.path );
		loader.setWithCredentials( scope.withCredentials );
		loader.load( url, function ( buffer ) {

const texData = scope.parse( buffer );

if ( ! texData ) return;

if ( texData.image !== undefined ) {

texture.image = texData.image;

} else if ( texData.data !== undefined ) {

texture.image.width = texData.width;
				texture.image.height = texData.height;
				texture.image.data = texData.data;

}

texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;

texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;

texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;

if ( texData.encoding !== undefined ) {

texture.encoding = texData.encoding;

}

if ( texData.flipY !== undefined ) {

texture.flipY = texData.flipY;

}

if ( texData.format !== undefined ) {

texture.format = texData.format;

}

if ( texData.type !== undefined ) {

texture.type = texData.type;

}

if ( texData.mipmaps !== undefined ) {

texture.mipmaps = texData.mipmaps;
				texture.minFilter = LinearMipmapLinearFilter; // presumably...

}

if ( texData.mipmapCount === 1 ) {

texture.minFilter = LinearFilter;

}

if ( texData.generateMipmaps !== undefined ) {

texture.generateMipmaps = texData.generateMipmaps;

}

texture.needsUpdate = true;

if ( onLoad ) onLoad( texture, texData );

}, onProgress, onError );

return texture;

}

class TextureLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const texture = new Texture();

const loader = new ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );

loader.load( url, function ( image ) {

texture.image = image;
			texture.needsUpdate = true;

if ( onLoad !== undefined ) {

onLoad( texture );

}

}, onProgress, onError );

return texture;

}

class Light extends Object3D {

constructor( color, intensity = 1 ) {

super();

this.isLight = true;

this.type = 'Light';

this.color = new Color( color );
		this.intensity = intensity;

}

dispose() {

// Empty here in base class; some subclasses override.

}

copy( source, recursive ) {

super.copy( source, recursive );

this.color.copy( source.color );
		this.intensity = source.intensity;

return this;

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.object.color = this.color.getHex();
		data.object.intensity = this.intensity;

if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();

if ( this.distance !== undefined ) data.object.distance = this.distance;
		if ( this.angle !== undefined ) data.object.angle = this.angle;
		if ( this.decay !== undefined ) data.object.decay = this.decay;
		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;

if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();

return data;

}

class HemisphereLight extends Light {

constructor( skyColor, groundColor, intensity ) {

super( skyColor, intensity );

this.isHemisphereLight = true;

this.type = 'HemisphereLight';

this.position.copy( Object3D.DEFAULT_UP );
		this.updateMatrix();

this.groundColor = new Color( groundColor );

}

copy( source, recursive ) {

super.copy( source, recursive );

this.groundColor.copy( source.groundColor );

return this;

}

const _projScreenMatrix$1 = /*@__PURE__*/ new Matrix4();
const _lightPositionWorld$1 = /*@__PURE__*/ new Vector3();
const _lookTarget$1 = /*@__PURE__*/ new Vector3();

class LightShadow {

constructor( camera ) {

this.camera = camera;

this.bias = 0;
		this.normalBias = 0;
		this.radius = 1;
		this.blurSamples = 8;

this.mapSize = new Vector2( 512, 512 );

this.map = null;
		this.mapPass = null;
		this.matrix = new Matrix4();

this.autoUpdate = true;
		this.needsUpdate = false;

this._frustum = new Frustum();
		this._frameExtents = new Vector2( 1, 1 );

this._viewportCount = 1;

this._viewports = [

new Vector4( 0, 0, 1, 1 )

];

}

getViewportCount() {

return this._viewportCount;

}

getFrustum() {

return this._frustum;

}

updateMatrices( light ) {

const shadowCamera = this.camera;
		const shadowMatrix = this.matrix;

_lightPositionWorld$1.setFromMatrixPosition( light.matrixWorld );
		shadowCamera.position.copy( _lightPositionWorld$1 );

_lookTarget$1.setFromMatrixPosition( light.target.matrixWorld );
		shadowCamera.lookAt( _lookTarget$1 );
		shadowCamera.updateMatrixWorld();

_projScreenMatrix$1.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( _projScreenMatrix$1 );

shadowMatrix.set(
			0.5, 0.0, 0.0, 0.5,
			0.0, 0.5, 0.0, 0.5,
			0.0, 0.0, 0.5, 0.5,
			0.0, 0.0, 0.0, 1.0
		);

shadowMatrix.multiply( _projScreenMatrix$1 );

}

getViewport( viewportIndex ) {

return this._viewports[ viewportIndex ];

}

getFrameExtents() {

return this._frameExtents;

}

dispose() {

if ( this.map ) {

this.map.dispose();

}

if ( this.mapPass ) {

this.mapPass.dispose();

}

copy( source ) {

this.camera = source.camera.clone();

this.bias = source.bias;
		this.radius = source.radius;

this.mapSize.copy( source.mapSize );

return this;

}

clone() {

return new this.constructor().copy( this );

}

toJSON() {

const object = {};

if ( this.bias !== 0 ) object.bias = this.bias;
		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
		if ( this.radius !== 1 ) object.radius = this.radius;
		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();

object.camera = this.camera.toJSON( false ).object;
		delete object.camera.matrix;

return object;

}

class SpotLightShadow extends LightShadow {

constructor() {

super( new PerspectiveCamera( 50, 1, 0.5, 500 ) );

this.isSpotLightShadow = true;

this.focus = 1;

}

updateMatrices( light ) {

const camera = this.camera;

const fov = RAD2DEG * 2 * light.angle * this.focus;
		const aspect = this.mapSize.width / this.mapSize.height;
		const far = light.distance || camera.far;

if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

camera.fov = fov;
			camera.aspect = aspect;
			camera.far = far;
			camera.updateProjectionMatrix();

}

super.updateMatrices( light );

}

copy( source ) {

super.copy( source );

this.focus = source.focus;

return this;

}

class SpotLight extends Light {

constructor( color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 2 ) {

super( color, intensity );

this.isSpotLight = true;

this.type = 'SpotLight';

this.position.copy( Object3D.DEFAULT_UP );
		this.updateMatrix();

this.target = new Object3D();

this.distance = distance;
		this.angle = angle;
		this.penumbra = penumbra;
		this.decay = decay;

this.map = null;

this.shadow = new SpotLightShadow();

}

get power() {

// compute the light's luminous power (in lumens) from its intensity (in candela)
		// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)
		return this.intensity * Math.PI;

}

set power( power ) {

// set the light's intensity (in candela) from the desired luminous power (in lumens)
		this.intensity = power / Math.PI;

}

dispose() {

this.shadow.dispose();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.distance = source.distance;
		this.angle = source.angle;
		this.penumbra = source.penumbra;
		this.decay = source.decay;

this.target = source.target.clone();

this.shadow = source.shadow.clone();

return this;

}

const _projScreenMatrix = /*@__PURE__*/ new Matrix4();
const _lightPositionWorld = /*@__PURE__*/ new Vector3();
const _lookTarget = /*@__PURE__*/ new Vector3();

class PointLightShadow extends LightShadow {

constructor() {

super( new PerspectiveCamera( 90, 1, 0.5, 500 ) );

this.isPointLightShadow = true;

this._frameExtents = new Vector2( 4, 2 );

this._viewportCount = 6;

this._viewports = [
			// These viewports map a cube-map onto a 2D texture with the
			// following orientation:
			//
			//  xzXZ
			//   y Y
			//
			// X - Positive x direction
			// x - Negative x direction
			// Y - Positive y direction
			// y - Negative y direction
			// Z - Positive z direction
			// z - Negative z direction

// positive X
			new Vector4( 2, 1, 1, 1 ),
			// negative X
			new Vector4( 0, 1, 1, 1 ),
			// positive Z
			new Vector4( 3, 1, 1, 1 ),
			// negative Z
			new Vector4( 1, 1, 1, 1 ),
			// positive Y
			new Vector4( 3, 0, 1, 1 ),
			// negative Y
			new Vector4( 1, 0, 1, 1 )
		];

this._cubeDirections = [
			new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
			new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
		];

this._cubeUps = [
			new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
			new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
		];

}

updateMatrices( light, viewportIndex = 0 ) {

const camera = this.camera;
		const shadowMatrix = this.matrix;

const far = light.distance || camera.far;

if ( far !== camera.far ) {

camera.far = far;
			camera.updateProjectionMatrix();

}

_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
		camera.position.copy( _lightPositionWorld );

_lookTarget.copy( camera.position );
		_lookTarget.add( this._cubeDirections[ viewportIndex ] );
		camera.up.copy( this._cubeUps[ viewportIndex ] );
		camera.lookAt( _lookTarget );
		camera.updateMatrixWorld();

shadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );

_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
		this._frustum.setFromProjectionMatrix( _projScreenMatrix );

}

class PointLight extends Light {

constructor( color, intensity, distance = 0, decay = 2 ) {

super( color, intensity );

this.isPointLight = true;

this.type = 'PointLight';

this.distance = distance;
		this.decay = decay;

this.shadow = new PointLightShadow();

}

get power() {

// compute the light's luminous power (in lumens) from its intensity (in candela)
		// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)
		return this.intensity * 4 * Math.PI;

}

set power( power ) {

// set the light's intensity (in candela) from the desired luminous power (in lumens)
		this.intensity = power / ( 4 * Math.PI );

}

dispose() {

this.shadow.dispose();

}

copy( source, recursive ) {

super.copy( source, recursive );

this.distance = source.distance;
		this.decay = source.decay;

this.shadow = source.shadow.clone();

return this;

}

class DirectionalLightShadow extends LightShadow {

constructor() {

super( new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );

this.isDirectionalLightShadow = true;

}

class DirectionalLight extends Light {

constructor( color, intensity ) {

super( color, intensity );

this.isDirectionalLight = true;

this.type = 'DirectionalLight';

this.position.copy( Object3D.DEFAULT_UP );
		this.updateMatrix();

this.target = new Object3D();

this.shadow = new DirectionalLightShadow();

}

dispose() {

this.shadow.dispose();

}

copy( source ) {

super.copy( source );

this.target = source.target.clone();
		this.shadow = source.shadow.clone();

return this;

}

class AmbientLight extends Light {

constructor( color, intensity ) {

super( color, intensity );

this.isAmbientLight = true;

this.type = 'AmbientLight';

}

class RectAreaLight extends Light {

constructor( color, intensity, width = 10, height = 10 ) {

super( color, intensity );

this.isRectAreaLight = true;

this.type = 'RectAreaLight';

this.width = width;
		this.height = height;

}

get power() {

// compute the light's luminous power (in lumens) from its intensity (in nits)
		return this.intensity * this.width * this.height * Math.PI;

}

set power( power ) {

// set the light's intensity (in nits) from the desired luminous power (in lumens)
		this.intensity = power / ( this.width * this.height * Math.PI );

}

copy( source ) {

super.copy( source );

this.width = source.width;
		this.height = source.height;

return this;

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.object.width = this.width;
		data.object.height = this.height;

return data;

}

/**
 * Primary reference:
 *   https://graphics.stanford.edu/papers/envmap/envmap.pdf
 *
 * Secondary reference:
 *   https://www.ppsloan.org/publications/StupidSH36.pdf
 */

// 3-band SH defined by 9 coefficients

class SphericalHarmonics3 {

constructor() {

this.isSphericalHarmonics3 = true;

this.coefficients = [];

for ( let i = 0; i < 9; i ++ ) {

this.coefficients.push( new Vector3() );

}

set( coefficients ) {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].copy( coefficients[ i ] );

}

return this;

}

zero() {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].set( 0, 0, 0 );

}

return this;

}

// get the radiance in the direction of the normal
	// target is a Vector3
	getAt( normal, target ) {

// normal is assumed to be unit length

const x = normal.x, y = normal.y, z = normal.z;

const coeff = this.coefficients;

// band 0
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );

// band 1
		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
		target.addScaledVector( coeff[ 3 ], 0.488603 * x );

// band 2
		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );

return target;

}

// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
	// target is a Vector3
	// https://graphics.stanford.edu/papers/envmap/envmap.pdf
	getIrradianceAt( normal, target ) {

// normal is assumed to be unit length

const x = normal.x, y = normal.y, z = normal.z;

const coeff = this.coefficients;

// band 0
		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095

// band 1
		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603
		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );

// band 2
		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548
		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3
		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274

return target;

}

add( sh ) {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].add( sh.coefficients[ i ] );

}

return this;

}

addScaledSH( sh, s ) {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );

}

return this;

}

scale( s ) {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].multiplyScalar( s );

}

return this;

}

lerp( sh, alpha ) {

for ( let i = 0; i < 9; i ++ ) {

this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );

}

return this;

}

equals( sh ) {

for ( let i = 0; i < 9; i ++ ) {

if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {

return false;

}

return true;

}

copy( sh ) {

return this.set( sh.coefficients );

}

clone() {

return new this.constructor().copy( this );

}

fromArray( array, offset = 0 ) {

const coefficients = this.coefficients;

for ( let i = 0; i < 9; i ++ ) {

coefficients[ i ].fromArray( array, offset + ( i * 3 ) );

}

return this;

}

toArray( array = [], offset = 0 ) {

const coefficients = this.coefficients;

for ( let i = 0; i < 9; i ++ ) {

coefficients[ i ].toArray( array, offset + ( i * 3 ) );

}

return array;

}

// evaluate the basis functions
	// shBasis is an Array[ 9 ]
	static getBasisAt( normal, shBasis ) {

// normal is assumed to be unit length

const x = normal.x, y = normal.y, z = normal.z;

// band 0
		shBasis[ 0 ] = 0.282095;

// band 1
		shBasis[ 1 ] = 0.488603 * y;
		shBasis[ 2 ] = 0.488603 * z;
		shBasis[ 3 ] = 0.488603 * x;

// band 2
		shBasis[ 4 ] = 1.092548 * x * y;
		shBasis[ 5 ] = 1.092548 * y * z;
		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
		shBasis[ 7 ] = 1.092548 * x * z;
		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );

}

class LightProbe extends Light {

constructor( sh = new SphericalHarmonics3(), intensity = 1 ) {

super( undefined, intensity );

this.isLightProbe = true;

this.sh = sh;

}

copy( source ) {

super.copy( source );

this.sh.copy( source.sh );

return this;

}

fromJSON( json ) {

this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
		this.sh.fromArray( json.sh );

return this;

}

toJSON( meta ) {

const data = super.toJSON( meta );

data.object.sh = this.sh.toArray();

return data;

}

class MaterialLoader extends Loader {

constructor( manager ) {

super( manager );
		this.textures = {};

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const loader = new FileLoader( scope.manager );
		loader.setPath( scope.path );
		loader.setRequestHeader( scope.requestHeader );
		loader.setWithCredentials( scope.withCredentials );
		loader.load( url, function ( text ) {

try {

onLoad( scope.parse( JSON.parse( text ) ) );

} catch ( e ) {

if ( onError ) {

onError( e );

} else {

console.error( e );

}

scope.manager.itemError( url );

}

}, onProgress, onError );

}

parse( json ) {

const textures = this.textures;

function getTexture( name ) {

if ( textures[ name ] === undefined ) {

console.warn( 'THREE.MaterialLoader: Undefined texture', name );

}

return textures[ name ];

}

const material = MaterialLoader.createMaterialFromType( json.type );

if ( json.uuid !== undefined ) material.uuid = json.uuid;
		if ( json.name !== undefined ) material.name = json.name;
		if ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );
		if ( json.roughness !== undefined ) material.roughness = json.roughness;
		if ( json.metalness !== undefined ) material.metalness = json.metalness;
		if ( json.sheen !== undefined ) material.sheen = json.sheen;
		if ( json.sheenColor !== undefined ) material.sheenColor = new Color().setHex( json.sheenColor );
		if ( json.sheenRoughness !== undefined ) material.sheenRoughness = json.sheenRoughness;
		if ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );
		if ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );
		if ( json.specularIntensity !== undefined ) material.specularIntensity = json.specularIntensity;
		if ( json.specularColor !== undefined && material.specularColor !== undefined ) material.specularColor.setHex( json.specularColor );
		if ( json.shininess !== undefined ) material.shininess = json.shininess;
		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
		if ( json.iridescence !== undefined ) material.iridescence = json.iridescence;
		if ( json.iridescenceIOR !== undefined ) material.iridescenceIOR = json.iridescenceIOR;
		if ( json.iridescenceThicknessRange !== undefined ) material.iridescenceThicknessRange = json.iridescenceThicknessRange;
		if ( json.transmission !== undefined ) material.transmission = json.transmission;
		if ( json.thickness !== undefined ) material.thickness = json.thickness;
		if ( json.attenuationDistance !== undefined ) material.attenuationDistance = json.attenuationDistance;
		if ( json.attenuationColor !== undefined && material.attenuationColor !== undefined ) material.attenuationColor.setHex( json.attenuationColor );
		if ( json.fog !== undefined ) material.fog = json.fog;
		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
		if ( json.blending !== undefined ) material.blending = json.blending;
		if ( json.combine !== undefined ) material.combine = json.combine;
		if ( json.side !== undefined ) material.side = json.side;
		if ( json.shadowSide !== undefined ) material.shadowSide = json.shadowSide;
		if ( json.opacity !== undefined ) material.opacity = json.opacity;
		if ( json.transparent !== undefined ) material.transparent = json.transparent;
		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;

if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;

if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;

if ( json.rotation !== undefined ) material.rotation = json.rotation;

if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
		if ( json.scale !== undefined ) material.scale = json.scale;

if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;

if ( json.dithering !== undefined ) material.dithering = json.dithering;

if ( json.alphaToCoverage !== undefined ) material.alphaToCoverage = json.alphaToCoverage;
		if ( json.premultipliedAlpha !== undefined ) material.premultipliedAlpha = json.premultipliedAlpha;
		if ( json.forceSinglePass !== undefined ) material.forceSinglePass = json.forceSinglePass;

if ( json.visible !== undefined ) material.visible = json.visible;

if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;

if ( json.userData !== undefined ) material.userData = json.userData;

if ( json.vertexColors !== undefined ) {

if ( typeof json.vertexColors === 'number' ) {

material.vertexColors = ( json.vertexColors > 0 ) ? true : false;

} else {

material.vertexColors = json.vertexColors;

}

// Shader Material

if ( json.uniforms !== undefined ) {

for ( const name in json.uniforms ) {

const uniform = json.uniforms[ name ];

material.uniforms[ name ] = {};

switch ( uniform.type ) {

case 't':
						material.uniforms[ name ].value = getTexture( uniform.value );
						break;

case 'c':
						material.uniforms[ name ].value = new Color().setHex( uniform.value );
						break;

case 'v2':
						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
						break;

case 'v3':
						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
						break;

case 'v4':
						material.uniforms[ name ].value = new Vector4().fromArray( uniform.value );
						break;

case 'm3':
						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
						break;

case 'm4':
						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
						break;

default:
						material.uniforms[ name ].value = uniform.value;

}

if ( json.defines !== undefined ) material.defines = json.defines;
		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
		if ( json.glslVersion !== undefined ) material.glslVersion = json.glslVersion;

if ( json.extensions !== undefined ) {

for ( const key in json.extensions ) {

material.extensions[ key ] = json.extensions[ key ];

}

// for PointsMaterial

if ( json.size !== undefined ) material.size = json.size;
		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;

// maps

if ( json.map !== undefined ) material.map = getTexture( json.map );
		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );

if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );

if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;

if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
		if ( json.normalScale !== undefined ) {

let normalScale = json.normalScale;

if ( Array.isArray( normalScale ) === false ) {

// Blender exporter used to export a scalar. See #7459

normalScale = [ normalScale, normalScale ];

}

material.normalScale = new Vector2().fromArray( normalScale );

}

if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;

if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );

if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;

if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
		if ( json.specularIntensityMap !== undefined ) material.specularIntensityMap = getTexture( json.specularIntensityMap );
		if ( json.specularColorMap !== undefined ) material.specularColorMap = getTexture( json.specularColorMap );

if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;

if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;

if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;

if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;

if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );

if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );

if ( json.iridescenceMap !== undefined ) material.iridescenceMap = getTexture( json.iridescenceMap );
		if ( json.iridescenceThicknessMap !== undefined ) material.iridescenceThicknessMap = getTexture( json.iridescenceThicknessMap );

if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
		if ( json.thicknessMap !== undefined ) material.thicknessMap = getTexture( json.thicknessMap );

if ( json.sheenColorMap !== undefined ) material.sheenColorMap = getTexture( json.sheenColorMap );
		if ( json.sheenRoughnessMap !== undefined ) material.sheenRoughnessMap = getTexture( json.sheenRoughnessMap );

return material;

}

setTextures( value ) {

this.textures = value;
		return this;

}

static createMaterialFromType( type ) {

const materialLib = {
			ShadowMaterial,
			SpriteMaterial,
			RawShaderMaterial,
			ShaderMaterial,
			PointsMaterial,
			MeshPhysicalMaterial,
			MeshStandardMaterial,
			MeshPhongMaterial,
			MeshToonMaterial,
			MeshNormalMaterial,
			MeshLambertMaterial,
			MeshDepthMaterial,
			MeshDistanceMaterial,
			MeshBasicMaterial,
			MeshMatcapMaterial,
			LineDashedMaterial,
			LineBasicMaterial,
			Material
		};

return new materialLib[ type ]();

}

class LoaderUtils {

static decodeText( array ) {

if ( typeof TextDecoder !== 'undefined' ) {

return new TextDecoder().decode( array );

}

// Avoid the String.fromCharCode.apply(null, array) shortcut, which
		// throws a "maximum call stack size exceeded" error for large arrays.

let s = '';

for ( let i = 0, il = array.length; i < il; i ++ ) {

// Implicitly assumes little-endian.
			s += String.fromCharCode( array[ i ] );

}

try {

// merges multi-byte utf-8 characters.

return decodeURIComponent( escape( s ) );

} catch ( e ) { // see #16358

return s;

}

static extractUrlBase( url ) {

const index = url.lastIndexOf( '/' );

if ( index === - 1 ) return './';

return url.slice( 0, index + 1 );

}

static resolveURL( url, path ) {

// Invalid URL
		if ( typeof url !== 'string' || url === '' ) return '';

// Host Relative URL
		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {

path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );

}

// Absolute URL http://,https://,//
		if ( /^(https?:)?\/\//i.test( url ) ) return url;

// Data URI
		if ( /^data:.*,.*$/i.test( url ) ) return url;

// Blob URL
		if ( /^blob:.*$/i.test( url ) ) return url;

// Relative URL
		return path + url;

}

class InstancedBufferGeometry extends BufferGeometry {

constructor() {

super();

this.isInstancedBufferGeometry = true;

this.type = 'InstancedBufferGeometry';
		this.instanceCount = Infinity;

}

copy( source ) {

super.copy( source );

this.instanceCount = source.instanceCount;

return this;

}

toJSON() {

const data = super.toJSON();

data.instanceCount = this.instanceCount;

data.isInstancedBufferGeometry = true;

return data;

}

class BufferGeometryLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

try {

onLoad( scope.parse( JSON.parse( text ) ) );

} catch ( e ) {

if ( onError ) {

onError( e );

} else {

console.error( e );

}

scope.manager.itemError( url );

}

}, onProgress, onError );

}

parse( json ) {

const interleavedBufferMap = {};
		const arrayBufferMap = {};

function getInterleavedBuffer( json, uuid ) {

if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];

const interleavedBuffers = json.interleavedBuffers;
			const interleavedBuffer = interleavedBuffers[ uuid ];

const buffer = getArrayBuffer( json, interleavedBuffer.buffer );

const array = getTypedArray( interleavedBuffer.type, buffer );
			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
			ib.uuid = interleavedBuffer.uuid;

interleavedBufferMap[ uuid ] = ib;

return ib;

}

function getArrayBuffer( json, uuid ) {

if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];

const arrayBuffers = json.arrayBuffers;
			const arrayBuffer = arrayBuffers[ uuid ];

const ab = new Uint32Array( arrayBuffer ).buffer;

arrayBufferMap[ uuid ] = ab;

return ab;

}

const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();

const index = json.data.index;

if ( index !== undefined ) {

const typedArray = getTypedArray( index.type, index.array );
			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );

}

const attributes = json.data.attributes;

for ( const key in attributes ) {

const attribute = attributes[ key ];
			let bufferAttribute;

if ( attribute.isInterleavedBufferAttribute ) {

const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

} else {

const typedArray = getTypedArray( attribute.type, attribute.array );
				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );

}

if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
			if ( attribute.usage !== undefined ) bufferAttribute.setUsage( attribute.usage );

if ( attribute.updateRange !== undefined ) {

bufferAttribute.updateRange.offset = attribute.updateRange.offset;
				bufferAttribute.updateRange.count = attribute.updateRange.count;

}

geometry.setAttribute( key, bufferAttribute );

}

const morphAttributes = json.data.morphAttributes;

if ( morphAttributes ) {

for ( const key in morphAttributes ) {

const attributeArray = morphAttributes[ key ];

const array = [];

for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {

const attribute = attributeArray[ i ];
					let bufferAttribute;

if ( attribute.isInterleavedBufferAttribute ) {

const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );

} else {

const typedArray = getTypedArray( attribute.type, attribute.array );
						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );

}

if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
					array.push( bufferAttribute );

}

geometry.morphAttributes[ key ] = array;

}

const morphTargetsRelative = json.data.morphTargetsRelative;

if ( morphTargetsRelative ) {

geometry.morphTargetsRelative = true;

}

const groups = json.data.groups || json.data.drawcalls || json.data.offsets;

if ( groups !== undefined ) {

for ( let i = 0, n = groups.length; i !== n; ++ i ) {

const group = groups[ i ];

geometry.addGroup( group.start, group.count, group.materialIndex );

}

const boundingSphere = json.data.boundingSphere;

if ( boundingSphere !== undefined ) {

const center = new Vector3();

if ( boundingSphere.center !== undefined ) {

center.fromArray( boundingSphere.center );

}

geometry.boundingSphere = new Sphere( center, boundingSphere.radius );

}

if ( json.name ) geometry.name = json.name;
		if ( json.userData ) geometry.userData = json.userData;

return geometry;

}

class ObjectLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
		this.resourcePath = this.resourcePath || path;

let json = null;

try {

json = JSON.parse( text );

} catch ( error ) {

if ( onError !== undefined ) onError( error );

console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );

return;

}

const metadata = json.metadata;

if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

if ( onError !== undefined ) onError( new Error( 'THREE.ObjectLoader: Can\'t load ' + url ) );

console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
				return;

}

scope.parse( json, onLoad );

}, onProgress, onError );

}

async loadAsync( url, onProgress ) {

const scope = this;

const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
		this.resourcePath = this.resourcePath || path;

const loader = new FileLoader( this.manager );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );

const text = await loader.loadAsync( url, onProgress );

const json = JSON.parse( text );

const metadata = json.metadata;

if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {

throw new Error( 'THREE.ObjectLoader: Can\'t load ' + url );

}

return await scope.parseAsync( json );

}

parse( json, onLoad ) {

const animations = this.parseAnimations( json.animations );
		const shapes = this.parseShapes( json.shapes );
		const geometries = this.parseGeometries( json.geometries, shapes );

const images = this.parseImages( json.images, function () {

if ( onLoad !== undefined ) onLoad( object );

} );

const textures = this.parseTextures( json.textures, images );
		const materials = this.parseMaterials( json.materials, textures );

const object = this.parseObject( json.object, geometries, materials, textures, animations );
		const skeletons = this.parseSkeletons( json.skeletons, object );

this.bindSkeletons( object, skeletons );

if ( onLoad !== undefined ) {

let hasImages = false;

for ( const uuid in images ) {

if ( images[ uuid ].data instanceof HTMLImageElement ) {

hasImages = true;
					break;

}

if ( hasImages === false ) onLoad( object );

}

return object;

}

async parseAsync( json ) {

const animations = this.parseAnimations( json.animations );
		const shapes = this.parseShapes( json.shapes );
		const geometries = this.parseGeometries( json.geometries, shapes );

const images = await this.parseImagesAsync( json.images );

const textures = this.parseTextures( json.textures, images );
		const materials = this.parseMaterials( json.materials, textures );

const object = this.parseObject( json.object, geometries, materials, textures, animations );
		const skeletons = this.parseSkeletons( json.skeletons, object );

this.bindSkeletons( object, skeletons );

return object;

}

parseShapes( json ) {

const shapes = {};

if ( json !== undefined ) {

for ( let i = 0, l = json.length; i < l; i ++ ) {

const shape = new Shape().fromJSON( json[ i ] );

shapes[ shape.uuid ] = shape;

}

return shapes;

}

parseSkeletons( json, object ) {

const skeletons = {};
		const bones = {};

// generate bone lookup table

object.traverse( function ( child ) {

if ( child.isBone ) bones[ child.uuid ] = child;

} );

// create skeletons

if ( json !== undefined ) {

for ( let i = 0, l = json.length; i < l; i ++ ) {

const skeleton = new Skeleton().fromJSON( json[ i ], bones );

skeletons[ skeleton.uuid ] = skeleton;

}

return skeletons;

}

parseGeometries( json, shapes ) {

const geometries = {};

if ( json !== undefined ) {

const bufferGeometryLoader = new BufferGeometryLoader();

for ( let i = 0, l = json.length; i < l; i ++ ) {

let geometry;
				const data = json[ i ];

switch ( data.type ) {

case 'BufferGeometry':
					case 'InstancedBufferGeometry':

geometry = bufferGeometryLoader.parse( data );
						break;

default:

if ( data.type in Geometries ) {

geometry = Geometries[ data.type ].fromJSON( data, shapes );

} else {

console.warn( `THREE.ObjectLoader: Unsupported geometry type "${ data.type }"` );

}

geometry.uuid = data.uuid;

if ( data.name !== undefined ) geometry.name = data.name;
				if ( data.userData !== undefined ) geometry.userData = data.userData;

geometries[ data.uuid ] = geometry;

}

return geometries;

}

parseMaterials( json, textures ) {

const cache = {}; // MultiMaterial
		const materials = {};

if ( json !== undefined ) {

const loader = new MaterialLoader();
			loader.setTextures( textures );

for ( let i = 0, l = json.length; i < l; i ++ ) {

const data = json[ i ];

if ( cache[ data.uuid ] === undefined ) {

cache[ data.uuid ] = loader.parse( data );

}

materials[ data.uuid ] = cache[ data.uuid ];

}

return materials;

}

parseAnimations( json ) {

const animations = {};

if ( json !== undefined ) {

for ( let i = 0; i < json.length; i ++ ) {

const data = json[ i ];

const clip = AnimationClip.parse( data );

animations[ clip.uuid ] = clip;

}

return animations;

}

parseImages( json, onLoad ) {

const scope = this;
		const images = {};

let loader;

function loadImage( url ) {

scope.manager.itemStart( url );

return loader.load( url, function () {

scope.manager.itemEnd( url );

}, undefined, function () {

scope.manager.itemError( url );
				scope.manager.itemEnd( url );

} );

}

function deserializeImage( image ) {

if ( typeof image === 'string' ) {

const url = image;

const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

return loadImage( path );

} else {

if ( image.data ) {

return {
						data: getTypedArray( image.type, image.data ),
						width: image.width,
						height: image.height
					};

} else {

return null;

}

if ( json !== undefined && json.length > 0 ) {

const manager = new LoadingManager( onLoad );

loader = new ImageLoader( manager );
			loader.setCrossOrigin( this.crossOrigin );

for ( let i = 0, il = json.length; i < il; i ++ ) {

const image = json[ i ];
				const url = image.url;

if ( Array.isArray( url ) ) {

// load array of images e.g CubeTexture

const imageArray = [];

for ( let j = 0, jl = url.length; j < jl; j ++ ) {

const currentUrl = url[ j ];

const deserializedImage = deserializeImage( currentUrl );

if ( deserializedImage !== null ) {

if ( deserializedImage instanceof HTMLImageElement ) {

imageArray.push( deserializedImage );

} else {

// special case: handle array of data textures for cube textures

imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

}

images[ image.uuid ] = new Source( imageArray );

} else {

// load single image

const deserializedImage = deserializeImage( image.url );
					images[ image.uuid ] = new Source( deserializedImage );

}

return images;

}

async parseImagesAsync( json ) {

const scope = this;
		const images = {};

let loader;

async function deserializeImage( image ) {

if ( typeof image === 'string' ) {

const url = image;

const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;

return await loader.loadAsync( path );

} else {

if ( image.data ) {

return {
						data: getTypedArray( image.type, image.data ),
						width: image.width,
						height: image.height
					};

} else {

return null;

}

if ( json !== undefined && json.length > 0 ) {

loader = new ImageLoader( this.manager );
			loader.setCrossOrigin( this.crossOrigin );

for ( let i = 0, il = json.length; i < il; i ++ ) {

const image = json[ i ];
				const url = image.url;

if ( Array.isArray( url ) ) {

// load array of images e.g CubeTexture

const imageArray = [];

for ( let j = 0, jl = url.length; j < jl; j ++ ) {

const currentUrl = url[ j ];

const deserializedImage = await deserializeImage( currentUrl );

if ( deserializedImage !== null ) {

if ( deserializedImage instanceof HTMLImageElement ) {

imageArray.push( deserializedImage );

} else {

// special case: handle array of data textures for cube textures

imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );

}

images[ image.uuid ] = new Source( imageArray );

} else {

// load single image

const deserializedImage = await deserializeImage( image.url );
					images[ image.uuid ] = new Source( deserializedImage );

}

return images;

}

parseTextures( json, images ) {

function parseConstant( value, type ) {

if ( typeof value === 'number' ) return value;

console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );

return type[ value ];

}

const textures = {};

if ( json !== undefined ) {

for ( let i = 0, l = json.length; i < l; i ++ ) {

const data = json[ i ];

if ( data.image === undefined ) {

console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );

}

if ( images[ data.image ] === undefined ) {

console.warn( 'THREE.ObjectLoader: Undefined image', data.image );

}

const source = images[ data.image ];
				const image = source.data;

let texture;

if ( Array.isArray( image ) ) {

texture = new CubeTexture();

if ( image.length === 6 ) texture.needsUpdate = true;

} else {

if ( image && image.data ) {

texture = new DataTexture();

} else {

texture = new Texture();

}

if ( image ) texture.needsUpdate = true; // textures can have undefined image data

}

texture.source = source;

texture.uuid = data.uuid;

if ( data.name !== undefined ) texture.name = data.name;

if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );
				if ( data.channel !== undefined ) texture.channel = data.channel;

if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
				if ( data.center !== undefined ) texture.center.fromArray( data.center );
				if ( data.rotation !== undefined ) texture.rotation = data.rotation;

if ( data.wrap !== undefined ) {

texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );

}

if ( data.format !== undefined ) texture.format = data.format;
				if ( data.internalFormat !== undefined ) texture.internalFormat = data.internalFormat;
				if ( data.type !== undefined ) texture.type = data.type;
				if ( data.encoding !== undefined ) texture.encoding = data.encoding;

if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;

if ( data.flipY !== undefined ) texture.flipY = data.flipY;

if ( data.generateMipmaps !== undefined ) texture.generateMipmaps = data.generateMipmaps;
				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;

if ( data.userData !== undefined ) texture.userData = data.userData;

textures[ data.uuid ] = texture;

}

return textures;

}

parseObject( data, geometries, materials, textures, animations ) {

let object;

function getGeometry( name ) {

if ( geometries[ name ] === undefined ) {

console.warn( 'THREE.ObjectLoader: Undefined geometry', name );

}

return geometries[ name ];

}

function getMaterial( name ) {

if ( name === undefined ) return undefined;

if ( Array.isArray( name ) ) {

const array = [];

for ( let i = 0, l = name.length; i < l; i ++ ) {

const uuid = name[ i ];

if ( materials[ uuid ] === undefined ) {

console.warn( 'THREE.ObjectLoader: Undefined material', uuid );

}

array.push( materials[ uuid ] );

}

return array;

}

if ( materials[ name ] === undefined ) {

console.warn( 'THREE.ObjectLoader: Undefined material', name );

}

return materials[ name ];

}

function getTexture( uuid ) {

if ( textures[ uuid ] === undefined ) {

console.warn( 'THREE.ObjectLoader: Undefined texture', uuid );

}

return textures[ uuid ];

}

let geometry, material;

switch ( data.type ) {

case 'Scene':

object = new Scene();

if ( data.background !== undefined ) {

if ( Number.isInteger( data.background ) ) {

object.background = new Color( data.background );

} else {

object.background = getTexture( data.background );

}

if ( data.environment !== undefined ) {

object.environment = getTexture( data.environment );

}

if ( data.fog !== undefined ) {

if ( data.fog.type === 'Fog' ) {

object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );

} else if ( data.fog.type === 'FogExp2' ) {

object.fog = new FogExp2( data.fog.color, data.fog.density );

}

if ( data.backgroundBlurriness !== undefined ) object.backgroundBlurriness = data.backgroundBlurriness;
				if ( data.backgroundIntensity !== undefined ) object.backgroundIntensity = data.backgroundIntensity;

break;

case 'PerspectiveCamera':

object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );

if ( data.focus !== undefined ) object.focus = data.focus;
				if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

break;

case 'OrthographicCamera':

object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );

if ( data.zoom !== undefined ) object.zoom = data.zoom;
				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );

break;

case 'AmbientLight':

object = new AmbientLight( data.color, data.intensity );

break;

case 'DirectionalLight':

object = new DirectionalLight( data.color, data.intensity );

break;

case 'PointLight':

object = new PointLight( data.color, data.intensity, data.distance, data.decay );

break;

case 'RectAreaLight':

object = new RectAreaLight( data.color, data.intensity, data.width, data.height );

break;

case 'SpotLight':

object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );

break;

case 'HemisphereLight':

object = new HemisphereLight( data.color, data.groundColor, data.intensity );

break;

case 'LightProbe':

object = new LightProbe().fromJSON( data );

break;

case 'SkinnedMesh':

geometry = getGeometry( data.geometry );
			 	material = getMaterial( data.material );

object = new SkinnedMesh( geometry, material );

if ( data.bindMode !== undefined ) object.bindMode = data.bindMode;
				if ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );
				if ( data.skeleton !== undefined ) object.skeleton = data.skeleton;

break;

case 'Mesh':

geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );

object = new Mesh( geometry, material );

break;

case 'InstancedMesh':

geometry = getGeometry( data.geometry );
				material = getMaterial( data.material );
				const count = data.count;
				const instanceMatrix = data.instanceMatrix;
				const instanceColor = data.instanceColor;

object = new InstancedMesh( geometry, material, count );
				object.instanceMatrix = new InstancedBufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
				if ( instanceColor !== undefined ) object.instanceColor = new InstancedBufferAttribute( new Float32Array( instanceColor.array ), instanceColor.itemSize );

break;

case 'LOD':

object = new LOD();

break;

case 'Line':

object = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );

break;

case 'LineLoop':

object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );

break;

case 'LineSegments':

object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );

break;

case 'PointCloud':
			case 'Points':

object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );

break;

case 'Sprite':

object = new Sprite( getMaterial( data.material ) );

break;

case 'Group':

object = new Group();

break;

case 'Bone':

object = new Bone();

break;

default:

object = new Object3D();

}

object.uuid = data.uuid;

if ( data.name !== undefined ) object.name = data.name;

if ( data.matrix !== undefined ) {

object.matrix.fromArray( data.matrix );

if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );

} else {

if ( data.position !== undefined ) object.position.fromArray( data.position );
			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );

}

if ( data.up !== undefined ) object.up.fromArray( data.up );

if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;

if ( data.shadow ) {

if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );

}

if ( data.visible !== undefined ) object.visible = data.visible;
		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
		if ( data.userData !== undefined ) object.userData = data.userData;
		if ( data.layers !== undefined ) object.layers.mask = data.layers;

if ( data.children !== undefined ) {

const children = data.children;

for ( let i = 0; i < children.length; i ++ ) {

object.add( this.parseObject( children[ i ], geometries, materials, textures, animations ) );

}

if ( data.animations !== undefined ) {

const objectAnimations = data.animations;

for ( let i = 0; i < objectAnimations.length; i ++ ) {

const uuid = objectAnimations[ i ];

object.animations.push( animations[ uuid ] );

}

if ( data.type === 'LOD' ) {

if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;

const levels = data.levels;

for ( let l = 0; l < levels.length; l ++ ) {

const level = levels[ l ];
				const child = object.getObjectByProperty( 'uuid', level.object );

if ( child !== undefined ) {

object.addLevel( child, level.distance, level.hysteresis );

}

return object;

}

bindSkeletons( object, skeletons ) {

if ( Object.keys( skeletons ).length === 0 ) return;

object.traverse( function ( child ) {

if ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {

const skeleton = skeletons[ child.skeleton ];

if ( skeleton === undefined ) {

console.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );

} else {

child.bind( skeleton, child.bindMatrix );

}

} );

}

const TEXTURE_MAPPING = {
	UVMapping: UVMapping,
	CubeReflectionMapping: CubeReflectionMapping,
	CubeRefractionMapping: CubeRefractionMapping,
	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
	CubeUVReflectionMapping: CubeUVReflectionMapping
};

const TEXTURE_WRAPPING = {
	RepeatWrapping: RepeatWrapping,
	ClampToEdgeWrapping: ClampToEdgeWrapping,
	MirroredRepeatWrapping: MirroredRepeatWrapping
};

const TEXTURE_FILTER = {
	NearestFilter: NearestFilter,
	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
	LinearFilter: LinearFilter,
	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
	LinearMipmapLinearFilter: LinearMipmapLinearFilter
};

class ImageBitmapLoader extends Loader {

constructor( manager ) {

super( manager );

this.isImageBitmapLoader = true;

if ( typeof createImageBitmap === 'undefined' ) {

console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );

}

if ( typeof fetch === 'undefined' ) {

console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );

}

this.options = { premultiplyAlpha: 'none' };

}

setOptions( options ) {

this.options = options;

return this;

}

load( url, onLoad, onProgress, onError ) {

if ( url === undefined ) url = '';

if ( this.path !== undefined ) url = this.path + url;

url = this.manager.resolveURL( url );

const scope = this;

const cached = Cache.get( url );

if ( cached !== undefined ) {

scope.manager.itemStart( url );

setTimeout( function () {

if ( onLoad ) onLoad( cached );

scope.manager.itemEnd( url );

}, 0 );

return cached;

}

const fetchOptions = {};
		fetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';
		fetchOptions.headers = this.requestHeader;

fetch( url, fetchOptions ).then( function ( res ) {

return res.blob();

} ).then( function ( blob ) {

return createImageBitmap( blob, Object.assign( scope.options, { colorSpaceConversion: 'none' } ) );

} ).then( function ( imageBitmap ) {

Cache.add( url, imageBitmap );

if ( onLoad ) onLoad( imageBitmap );

scope.manager.itemEnd( url );

} ).catch( function ( e ) {

if ( onError ) onError( e );

scope.manager.itemError( url );
			scope.manager.itemEnd( url );

} );

scope.manager.itemStart( url );

}

let _context;

class AudioContext {

static getContext() {

if ( _context === undefined ) {

_context = new ( window.AudioContext || window.webkitAudioContext )();

}

return _context;

}

static setContext( value ) {

_context = value;

}

class AudioLoader extends Loader {

constructor( manager ) {

super( manager );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

const loader = new FileLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );
		loader.setPath( this.path );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( buffer ) {

try {

// Create a copy of the buffer. The `decodeAudioData` method
				// detaches the buffer when complete, preventing reuse.
				const bufferCopy = buffer.slice( 0 );

const context = AudioContext.getContext();
				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {

onLoad( audioBuffer );

} );

} catch ( e ) {

if ( onError ) {

onError( e );

} else {

console.error( e );

}

scope.manager.itemError( url );

}

}, onProgress, onError );

}

class HemisphereLightProbe extends LightProbe {

constructor( skyColor, groundColor, intensity = 1 ) {

super( undefined, intensity );

this.isHemisphereLightProbe = true;

const color1 = new Color().set( skyColor );
		const color2 = new Color().set( groundColor );

const sky = new Vector3( color1.r, color1.g, color1.b );
		const ground = new Vector3( color2.r, color2.g, color2.b );

// without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );
		const c0 = Math.sqrt( Math.PI );
		const c1 = c0 * Math.sqrt( 0.75 );

this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );
		this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );

}

class AmbientLightProbe extends LightProbe {

constructor( color, intensity = 1 ) {

super( undefined, intensity );

this.isAmbientLightProbe = true;

const color1 = new Color().set( color );

// without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );
		this.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );

}

const _eyeRight = /*@__PURE__*/ new Matrix4();
const _eyeLeft = /*@__PURE__*/ new Matrix4();
const _projectionMatrix = /*@__PURE__*/ new Matrix4();

class StereoCamera {

constructor() {

this.type = 'StereoCamera';

this.aspect = 1;

this.eyeSep = 0.064;

this.cameraL = new PerspectiveCamera();
		this.cameraL.layers.enable( 1 );
		this.cameraL.matrixAutoUpdate = false;

this.cameraR = new PerspectiveCamera();
		this.cameraR.layers.enable( 2 );
		this.cameraR.matrixAutoUpdate = false;

this._cache = {
			focus: null,
			fov: null,
			aspect: null,
			near: null,
			far: null,
			zoom: null,
			eyeSep: null
		};

}

update( camera ) {

const cache = this._cache;

const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;

if ( needsUpdate ) {

cache.focus = camera.focus;
			cache.fov = camera.fov;
			cache.aspect = camera.aspect * this.aspect;
			cache.near = camera.near;
			cache.far = camera.far;
			cache.zoom = camera.zoom;
			cache.eyeSep = this.eyeSep;

// Off-axis stereoscopic effect based on
			// http://paulbourke.net/stereographics/stereorender/

_projectionMatrix.copy( camera.projectionMatrix );
			const eyeSepHalf = cache.eyeSep / 2;
			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
			const ymax = ( cache.near * Math.tan( DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
			let xmin, xmax;

// translate xOffset

_eyeLeft.elements[ 12 ] = - eyeSepHalf;
			_eyeRight.elements[ 12 ] = eyeSepHalf;

// for left eye

xmin = - ymax * cache.aspect + eyeSepOnProjection;
			xmax = ymax * cache.aspect + eyeSepOnProjection;

_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

this.cameraL.projectionMatrix.copy( _projectionMatrix );

// for right eye

xmin = - ymax * cache.aspect - eyeSepOnProjection;
			xmax = ymax * cache.aspect - eyeSepOnProjection;

_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

this.cameraR.projectionMatrix.copy( _projectionMatrix );

}

this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );

}

class Clock {

constructor( autoStart = true ) {

this.autoStart = autoStart;

this.startTime = 0;
		this.oldTime = 0;
		this.elapsedTime = 0;

this.running = false;

}

start() {

this.startTime = now();

this.oldTime = this.startTime;
		this.elapsedTime = 0;
		this.running = true;

}

stop() {

this.getElapsedTime();
		this.running = false;
		this.autoStart = false;

}

getElapsedTime() {

this.getDelta();
		return this.elapsedTime;

}

getDelta() {

let diff = 0;

if ( this.autoStart && ! this.running ) {

this.start();
			return 0;

}

if ( this.running ) {

const newTime = now();

diff = ( newTime - this.oldTime ) / 1000;
			this.oldTime = newTime;

this.elapsedTime += diff;

}

return diff;

}

function now() {

return ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732

}

const _position$1 = /*@__PURE__*/ new Vector3();
const _quaternion$1 = /*@__PURE__*/ new Quaternion();
const _scale$1 = /*@__PURE__*/ new Vector3();
const _orientation$1 = /*@__PURE__*/ new Vector3();

class AudioListener extends Object3D {

constructor() {

super();

this.type = 'AudioListener';

this.context = AudioContext.getContext();

this.gain = this.context.createGain();
		this.gain.connect( this.context.destination );

this.filter = null;

this.timeDelta = 0;

// private

this._clock = new Clock();

}

getInput() {

return this.gain;

}

removeFilter() {

if ( this.filter !== null ) {

this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );
			this.gain.connect( this.context.destination );
			this.filter = null;

}

return this;

}

getFilter() {

return this.filter;

}

setFilter( value ) {

if ( this.filter !== null ) {

this.gain.disconnect( this.filter );
			this.filter.disconnect( this.context.destination );

} else {

this.gain.disconnect( this.context.destination );

}

this.filter = value;
		this.gain.connect( this.filter );
		this.filter.connect( this.context.destination );

return this;

}

getMasterVolume() {

return this.gain.gain.value;

}

setMasterVolume( value ) {

this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

return this;

}

updateMatrixWorld( force ) {

super.updateMatrixWorld( force );

const listener = this.context.listener;
		const up = this.up;

this.timeDelta = this._clock.getDelta();

this.matrixWorld.decompose( _position$1, _quaternion$1, _scale$1 );

_orientation$1.set( 0, 0, - 1 ).applyQuaternion( _quaternion$1 );

if ( listener.positionX ) {

// code path for Chrome (see #14393)

const endTime = this.context.currentTime + this.timeDelta;

listener.positionX.linearRampToValueAtTime( _position$1.x, endTime );
			listener.positionY.linearRampToValueAtTime( _position$1.y, endTime );
			listener.positionZ.linearRampToValueAtTime( _position$1.z, endTime );
			listener.forwardX.linearRampToValueAtTime( _orientation$1.x, endTime );
			listener.forwardY.linearRampToValueAtTime( _orientation$1.y, endTime );
			listener.forwardZ.linearRampToValueAtTime( _orientation$1.z, endTime );
			listener.upX.linearRampToValueAtTime( up.x, endTime );
			listener.upY.linearRampToValueAtTime( up.y, endTime );
			listener.upZ.linearRampToValueAtTime( up.z, endTime );

} else {

listener.setPosition( _position$1.x, _position$1.y, _position$1.z );
			listener.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z );

}

class Audio extends Object3D {

constructor( listener ) {

super();

this.type = 'Audio';

this.listener = listener;
		this.context = listener.context;

this.gain = this.context.createGain();
		this.gain.connect( listener.getInput() );

this.autoplay = false;

this.buffer = null;
		this.detune = 0;
		this.loop = false;
		this.loopStart = 0;
		this.loopEnd = 0;
		this.offset = 0;
		this.duration = undefined;
		this.playbackRate = 1;
		this.isPlaying = false;
		this.hasPlaybackControl = true;
		this.source = null;
		this.sourceType = 'empty';

this._startedAt = 0;
		this._progress = 0;
		this._connected = false;

this.filters = [];

}

getOutput() {

return this.gain;

}

setNodeSource( audioNode ) {

this.hasPlaybackControl = false;
		this.sourceType = 'audioNode';
		this.source = audioNode;
		this.connect();

return this;

}

setMediaElementSource( mediaElement ) {

this.hasPlaybackControl = false;
		this.sourceType = 'mediaNode';
		this.source = this.context.createMediaElementSource( mediaElement );
		this.connect();

return this;

}

setMediaStreamSource( mediaStream ) {

this.hasPlaybackControl = false;
		this.sourceType = 'mediaStreamNode';
		this.source = this.context.createMediaStreamSource( mediaStream );
		this.connect();

return this;

}

setBuffer( audioBuffer ) {

this.buffer = audioBuffer;
		this.sourceType = 'buffer';

if ( this.autoplay ) this.play();

return this;

}

play( delay = 0 ) {

if ( this.isPlaying === true ) {

console.warn( 'THREE.Audio: Audio is already playing.' );
			return;

}

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

}

this._startedAt = this.context.currentTime + delay;

const source = this.context.createBufferSource();
		source.buffer = this.buffer;
		source.loop = this.loop;
		source.loopStart = this.loopStart;
		source.loopEnd = this.loopEnd;
		source.onended = this.onEnded.bind( this );
		source.start( this._startedAt, this._progress + this.offset, this.duration );

this.isPlaying = true;

this.source = source;

this.setDetune( this.detune );
		this.setPlaybackRate( this.playbackRate );

return this.connect();

}

pause() {

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

}

if ( this.isPlaying === true ) {

// update current progress

this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;

if ( this.loop === true ) {

// ensure _progress does not exceed duration with looped audios

this._progress = this._progress % ( this.duration || this.buffer.duration );

}

this.source.stop();
			this.source.onended = null;

this.isPlaying = false;

}

return this;

}

stop() {

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

}

this._progress = 0;

if ( this.source !== null ) {

this.source.stop();
			this.source.onended = null;

}

this.isPlaying = false;

return this;

}

connect() {

if ( this.filters.length > 0 ) {

this.source.connect( this.filters[ 0 ] );

for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

this.filters[ i - 1 ].connect( this.filters[ i ] );

}

this.filters[ this.filters.length - 1 ].connect( this.getOutput() );

} else {

this.source.connect( this.getOutput() );

}

this._connected = true;

return this;

}

disconnect() {

if ( this.filters.length > 0 ) {

this.source.disconnect( this.filters[ 0 ] );

for ( let i = 1, l = this.filters.length; i < l; i ++ ) {

this.filters[ i - 1 ].disconnect( this.filters[ i ] );

}

this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );

} else {

this.source.disconnect( this.getOutput() );

}

this._connected = false;

return this;

}

getFilters() {

return this.filters;

}

setFilters( value ) {

if ( ! value ) value = [];

if ( this._connected === true ) {

this.disconnect();
			this.filters = value.slice();
			this.connect();

} else {

this.filters = value.slice();

}

return this;

}

setDetune( value ) {

this.detune = value;

if ( this.source.detune === undefined ) return; // only set detune when available

if ( this.isPlaying === true ) {

this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );

}

return this;

}

getDetune() {

return this.detune;

}

getFilter() {

return this.getFilters()[ 0 ];

}

setFilter( filter ) {

return this.setFilters( filter ? [ filter ] : [] );

}

setPlaybackRate( value ) {

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

}

this.playbackRate = value;

if ( this.isPlaying === true ) {

this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );

}

return this;

}

getPlaybackRate() {

return this.playbackRate;

}

onEnded() {

this.isPlaying = false;

}

getLoop() {

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return false;

}

return this.loop;

}

setLoop( value ) {

if ( this.hasPlaybackControl === false ) {

console.warn( 'THREE.Audio: this Audio has no playback control.' );
			return;

}

this.loop = value;

if ( this.isPlaying === true ) {

this.source.loop = this.loop;

}

return this;

}

setLoopStart( value ) {

this.loopStart = value;

return this;

}

setLoopEnd( value ) {

this.loopEnd = value;

return this;

}

getVolume() {

return this.gain.gain.value;

}

setVolume( value ) {

this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );

return this;

}

const _position = /*@__PURE__*/ new Vector3();
const _quaternion = /*@__PURE__*/ new Quaternion();
const _scale = /*@__PURE__*/ new Vector3();
const _orientation = /*@__PURE__*/ new Vector3();

class PositionalAudio extends Audio {

constructor( listener ) {

super( listener );

this.panner = this.context.createPanner();
		this.panner.panningModel = 'HRTF';
		this.panner.connect( this.gain );

}

disconnect() {

super.disconnect();

this.panner.disconnect( this.gain );

}

getOutput() {

return this.panner;

}

getRefDistance() {

return this.panner.refDistance;

}

setRefDistance( value ) {

this.panner.refDistance = value;

return this;

}

getRolloffFactor() {

return this.panner.rolloffFactor;

}

setRolloffFactor( value ) {

this.panner.rolloffFactor = value;

return this;

}

getDistanceModel() {

return this.panner.distanceModel;

}

setDistanceModel( value ) {

this.panner.distanceModel = value;

return this;

}

getMaxDistance() {

return this.panner.maxDistance;

}

setMaxDistance( value ) {

this.panner.maxDistance = value;

return this;

}

setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {

this.panner.coneInnerAngle = coneInnerAngle;
		this.panner.coneOuterAngle = coneOuterAngle;
		this.panner.coneOuterGain = coneOuterGain;

return this;

}

updateMatrixWorld( force ) {

super.updateMatrixWorld( force );

if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;

this.matrixWorld.decompose( _position, _quaternion, _scale );

_orientation.set( 0, 0, 1 ).applyQuaternion( _quaternion );

const panner = this.panner;

if ( panner.positionX ) {

// code path for Chrome and Firefox (see #14393)

const endTime = this.context.currentTime + this.listener.timeDelta;

panner.positionX.linearRampToValueAtTime( _position.x, endTime );
			panner.positionY.linearRampToValueAtTime( _position.y, endTime );
			panner.positionZ.linearRampToValueAtTime( _position.z, endTime );
			panner.orientationX.linearRampToValueAtTime( _orientation.x, endTime );
			panner.orientationY.linearRampToValueAtTime( _orientation.y, endTime );
			panner.orientationZ.linearRampToValueAtTime( _orientation.z, endTime );

} else {

panner.setPosition( _position.x, _position.y, _position.z );
			panner.setOrientation( _orientation.x, _orientation.y, _orientation.z );

}

class AudioAnalyser {

constructor( audio, fftSize = 2048 ) {

this.analyser = audio.context.createAnalyser();
		this.analyser.fftSize = fftSize;

this.data = new Uint8Array( this.analyser.frequencyBinCount );

audio.getOutput().connect( this.analyser );

}

getFrequencyData() {

this.analyser.getByteFrequencyData( this.data );

return this.data;

}

getAverageFrequency() {

let value = 0;
		const data = this.getFrequencyData();

for ( let i = 0; i < data.length; i ++ ) {

value += data[ i ];

}

return value / data.length;

}

class PropertyMixer {

constructor( binding, typeName, valueSize ) {

this.binding = binding;
		this.valueSize = valueSize;

let mixFunction,
			mixFunctionAdditive,
			setIdentity;

// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
		//
		// interpolators can use .buffer as their .result
		// the data then goes to 'incoming'
		//
		// 'accu0' and 'accu1' are used frame-interleaved for
		// the cumulative result and are compared to detect
		// changes
		//
		// 'orig' stores the original state of the property
		//
		// 'add' is used for additive cumulative results
		//
		// 'work' is optional and is only present for quaternion types. It is used
		// to store intermediate quaternion multiplication results

switch ( typeName ) {

case 'quaternion':
				mixFunction = this._slerp;
				mixFunctionAdditive = this._slerpAdditive;
				setIdentity = this._setAdditiveIdentityQuaternion;

this.buffer = new Float64Array( valueSize * 6 );
				this._workIndex = 5;
				break;

case 'string':
			case 'bool':
				mixFunction = this._select;

// Use the regular mix function and for additive on these types,
				// additive is not relevant for non-numeric types
				mixFunctionAdditive = this._select;

setIdentity = this._setAdditiveIdentityOther;

this.buffer = new Array( valueSize * 5 );
				break;

default:
				mixFunction = this._lerp;
				mixFunctionAdditive = this._lerpAdditive;
				setIdentity = this._setAdditiveIdentityNumeric;

this.buffer = new Float64Array( valueSize * 5 );

}

this._mixBufferRegion = mixFunction;
		this._mixBufferRegionAdditive = mixFunctionAdditive;
		this._setIdentity = setIdentity;
		this._origIndex = 3;
		this._addIndex = 4;

this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

this.useCount = 0;
		this.referenceCount = 0;

}

// accumulate data in the 'incoming' region into 'accu<i>'
	accumulate( accuIndex, weight ) {

// note: happily accumulating nothing when weight = 0, the caller knows
		// the weight and shouldn't have made the call in the first place

const buffer = this.buffer,
			stride = this.valueSize,
			offset = accuIndex * stride + stride;

let currentWeight = this.cumulativeWeight;

if ( currentWeight === 0 ) {

// accuN := incoming * weight

for ( let i = 0; i !== stride; ++ i ) {

buffer[ offset + i ] = buffer[ i ];

}

currentWeight = weight;

} else {

// accuN := accuN + incoming * weight

currentWeight += weight;
			const mix = weight / currentWeight;
			this._mixBufferRegion( buffer, offset, 0, mix, stride );

}

this.cumulativeWeight = currentWeight;

}

// accumulate data in the 'incoming' region into 'add'
	accumulateAdditive( weight ) {

const buffer = this.buffer,
			stride = this.valueSize,
			offset = stride * this._addIndex;

if ( this.cumulativeWeightAdditive === 0 ) {

// add = identity

this._setIdentity();

}

// add := add + incoming * weight

this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
		this.cumulativeWeightAdditive += weight;

}

// apply the state of 'accu<i>' to the binding when accus differ
	apply( accuIndex ) {

const stride = this.valueSize,
			buffer = this.buffer,
			offset = accuIndex * stride + stride,

weight = this.cumulativeWeight,
			weightAdditive = this.cumulativeWeightAdditive,

binding = this.binding;

this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

if ( weight < 1 ) {

// accuN := accuN + original * ( 1 - cumulativeWeight )

const originalValueOffset = stride * this._origIndex;

this._mixBufferRegion(
				buffer, offset, originalValueOffset, 1 - weight, stride );

}

if ( weightAdditive > 0 ) {

// accuN := accuN + additive accuN

this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );

}

for ( let i = stride, e = stride + stride; i !== e; ++ i ) {

if ( buffer[ i ] !== buffer[ i + stride ] ) {

// value has changed -> update scene graph

binding.setValue( buffer, offset );
				break;

}

// remember the state of the bound property and copy it to both accus
	saveOriginalState() {

const binding = this.binding;

const buffer = this.buffer,
			stride = this.valueSize,

originalValueOffset = stride * this._origIndex;

binding.getValue( buffer, originalValueOffset );

// accu[0..1] := orig -- initially detect changes against the original
		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {

buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];

}

// Add to identity for additive
		this._setIdentity();

this.cumulativeWeight = 0;
		this.cumulativeWeightAdditive = 0;

}

// apply the state previously taken via 'saveOriginalState' to the binding
	restoreOriginalState() {

const originalValueOffset = this.valueSize * 3;
		this.binding.setValue( this.buffer, originalValueOffset );

}

_setAdditiveIdentityNumeric() {

const startIndex = this._addIndex * this.valueSize;
		const endIndex = startIndex + this.valueSize;

for ( let i = startIndex; i < endIndex; i ++ ) {

this.buffer[ i ] = 0;

}

_setAdditiveIdentityQuaternion() {

this._setAdditiveIdentityNumeric();
		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;

}

_setAdditiveIdentityOther() {

const startIndex = this._origIndex * this.valueSize;
		const targetIndex = this._addIndex * this.valueSize;

for ( let i = 0; i < this.valueSize; i ++ ) {

this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];

}

// mix functions

_select( buffer, dstOffset, srcOffset, t, stride ) {

if ( t >= 0.5 ) {

for ( let i = 0; i !== stride; ++ i ) {

buffer[ dstOffset + i ] = buffer[ srcOffset + i ];

}

_slerp( buffer, dstOffset, srcOffset, t ) {

Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );

}

_slerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

const workOffset = this._workIndex * stride;

// Store result in intermediate buffer offset
		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );

// Slerp to the intermediate result
		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );

}

_lerp( buffer, dstOffset, srcOffset, t, stride ) {

const s = 1 - t;

for ( let i = 0; i !== stride; ++ i ) {

const j = dstOffset + i;

buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;

}

_lerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {

for ( let i = 0; i !== stride; ++ i ) {

const j = dstOffset + i;

buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;

}

// Characters [].:/ are reserved for track binding syntax.
const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );

// Attempts to allow node names from any language. ES5's `\w` regexp matches
// only latin characters, and the unicode \p{L} is not yet supported. So
// instead, we exclude reserved characters and match everything else.
const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';

// Parent directories, delimited by '/' or ':'. Currently unused, but must
// be matched to parse the rest of the track name.
const _directoryRe = /*@__PURE__*/ /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );

// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
const _nodeRe = /*@__PURE__*/ /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );

// Object on target node, and accessor. May not contain reserved
// characters. Accessor may contain any character except closing bracket.
const _objectRe = /*@__PURE__*/ /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );

// Property and accessor. May not contain reserved characters. Accessor may
// contain any non-bracket characters.
const _propertyRe = /*@__PURE__*/ /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );

const _trackRe = new RegExp( ''
	+ '^'
	+ _directoryRe
	+ _nodeRe
	+ _objectRe
	+ _propertyRe
	+ '$'
);

const _supportedObjectNames = [ 'material', 'materials', 'bones', 'map' ];

class Composite {

constructor( targetGroup, path, optionalParsedPath ) {

const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );

this._targetGroup = targetGroup;
		this._bindings = targetGroup.subscribe_( path, parsedPath );

}

getValue( array, offset ) {

this.bind(); // bind all binding

const firstValidIndex = this._targetGroup.nCachedObjects_,
			binding = this._bindings[ firstValidIndex ];

// and only call .getValue on the first
		if ( binding !== undefined ) binding.getValue( array, offset );

}

setValue( array, offset ) {

const bindings = this._bindings;

for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

bindings[ i ].setValue( array, offset );

}

bind() {

const bindings = this._bindings;

for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

bindings[ i ].bind();

}

unbind() {

const bindings = this._bindings;

for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {

bindings[ i ].unbind();

}

// Note: This class uses a State pattern on a per-method basis:
// 'bind' sets 'this.getValue' / 'setValue' and shadows the
// prototype version of these methods with one that represents
// the bound state. When the property is not found, the methods
// become no-ops.
class PropertyBinding {

constructor( rootNode, path, parsedPath ) {

this.path = path;
		this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );

this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName );

this.rootNode = rootNode;

// initial state of these methods that calls 'bind'
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;

}

static create( root, path, parsedPath ) {

if ( ! ( root && root.isAnimationObjectGroup ) ) {

return new PropertyBinding( root, path, parsedPath );

} else {

return new PropertyBinding.Composite( root, path, parsedPath );

}

/**
	 * Replaces spaces with underscores and removes unsupported characters from
	 * node names, to ensure compatibility with parseTrackName().
	 *
	 * @param {string} name Node name to be sanitized.
	 * @return {string}
	 */
	static sanitizeNodeName( name ) {

return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );

}

static parseTrackName( trackName ) {

const matches = _trackRe.exec( trackName );

if ( matches === null ) {

throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );

}

const results = {
			// directoryName: matches[ 1 ], // (tschw) currently unused
			nodeName: matches[ 2 ],
			objectName: matches[ 3 ],
			objectIndex: matches[ 4 ],
			propertyName: matches[ 5 ], // required
			propertyIndex: matches[ 6 ]
		};

const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );

if ( lastDot !== undefined && lastDot !== - 1 ) {

const objectName = results.nodeName.substring( lastDot + 1 );

// Object names must be checked against an allowlist. Otherwise, there
			// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
			// 'bar' could be the objectName, or part of a nodeName (which can
			// include '.' characters).
			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {

results.nodeName = results.nodeName.substring( 0, lastDot );
				results.objectName = objectName;

}

if ( results.propertyName === null || results.propertyName.length === 0 ) {

throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );

}

return results;

}

static findNode( root, nodeName ) {

if ( nodeName === undefined || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {

return root;

}

// search into skeleton bones.
		if ( root.skeleton ) {

const bone = root.skeleton.getBoneByName( nodeName );

if ( bone !== undefined ) {

return bone;

}

// search into node subtree.
		if ( root.children ) {

const searchNodeSubtree = function ( children ) {

for ( let i = 0; i < children.length; i ++ ) {

const childNode = children[ i ];

if ( childNode.name === nodeName || childNode.uuid === nodeName ) {

return childNode;

}

const result = searchNodeSubtree( childNode.children );

if ( result ) return result;

}

return null;

};

const subTreeNode = searchNodeSubtree( root.children );

if ( subTreeNode ) {

return subTreeNode;

}

return null;

}

// these are used to "bind" a nonexistent property
	_getValue_unavailable() {}
	_setValue_unavailable() {}

// Getters

_getValue_direct( buffer, offset ) {

buffer[ offset ] = this.targetObject[ this.propertyName ];

}

_getValue_array( buffer, offset ) {

const source = this.resolvedProperty;

for ( let i = 0, n = source.length; i !== n; ++ i ) {

buffer[ offset ++ ] = source[ i ];

}

_getValue_arrayElement( buffer, offset ) {

buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];

}

_getValue_toArray( buffer, offset ) {

this.resolvedProperty.toArray( buffer, offset );

}

// Direct

_setValue_direct( buffer, offset ) {

this.targetObject[ this.propertyName ] = buffer[ offset ];

}

_setValue_direct_setNeedsUpdate( buffer, offset ) {

this.targetObject[ this.propertyName ] = buffer[ offset ];
		this.targetObject.needsUpdate = true;

}

_setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {

this.targetObject[ this.propertyName ] = buffer[ offset ];
		this.targetObject.matrixWorldNeedsUpdate = true;

}

// EntireArray

_setValue_array( buffer, offset ) {

const dest = this.resolvedProperty;

for ( let i = 0, n = dest.length; i !== n; ++ i ) {

dest[ i ] = buffer[ offset ++ ];

}

_setValue_array_setNeedsUpdate( buffer, offset ) {

const dest = this.resolvedProperty;

for ( let i = 0, n = dest.length; i !== n; ++ i ) {

dest[ i ] = buffer[ offset ++ ];

}

this.targetObject.needsUpdate = true;

}

_setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {

const dest = this.resolvedProperty;

for ( let i = 0, n = dest.length; i !== n; ++ i ) {

dest[ i ] = buffer[ offset ++ ];

}

this.targetObject.matrixWorldNeedsUpdate = true;

}

// ArrayElement

_setValue_arrayElement( buffer, offset ) {

this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];

}

_setValue_arrayElement_setNeedsUpdate( buffer, offset ) {

this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
		this.targetObject.needsUpdate = true;

}

_setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {

this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
		this.targetObject.matrixWorldNeedsUpdate = true;

}

// HasToFromArray

_setValue_fromArray( buffer, offset ) {

this.resolvedProperty.fromArray( buffer, offset );

}

_setValue_fromArray_setNeedsUpdate( buffer, offset ) {

this.resolvedProperty.fromArray( buffer, offset );
		this.targetObject.needsUpdate = true;

}

_setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {

this.resolvedProperty.fromArray( buffer, offset );
		this.targetObject.matrixWorldNeedsUpdate = true;

}

_getValue_unbound( targetArray, offset ) {

this.bind();
		this.getValue( targetArray, offset );

}

_setValue_unbound( sourceArray, offset ) {

this.bind();
		this.setValue( sourceArray, offset );

}

// create getter / setter pair for a property in the scene graph
	bind() {

let targetObject = this.node;
		const parsedPath = this.parsedPath;

const objectName = parsedPath.objectName;
		const propertyName = parsedPath.propertyName;
		let propertyIndex = parsedPath.propertyIndex;

if ( ! targetObject ) {

targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName );

this.node = targetObject;

}

// set fail state so we can just 'return' on error
		this.getValue = this._getValue_unavailable;
		this.setValue = this._setValue_unavailable;

// ensure there is a value node
		if ( ! targetObject ) {

console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
			return;

}

if ( objectName ) {

let objectIndex = parsedPath.objectIndex;

// special cases were we need to reach deeper into the hierarchy to get the face materials....
			switch ( objectName ) {

case 'materials':

if ( ! targetObject.material ) {

console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
						return;

}

if ( ! targetObject.material.materials ) {

console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
						return;

}

targetObject = targetObject.material.materials;

break;

case 'bones':

if ( ! targetObject.skeleton ) {

console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
						return;

}

// potential future optimization: skip this if propertyIndex is already an integer
					// and convert the integer string to a true integer.

targetObject = targetObject.skeleton.bones;

// support resolving morphTarget names into indices.
					for ( let i = 0; i < targetObject.length; i ++ ) {

if ( targetObject[ i ].name === objectIndex ) {

objectIndex = i;
							break;

}

break;

case 'map':

if ( 'map' in targetObject ) {

targetObject = targetObject.map;
						break;

}

if ( ! targetObject.material ) {

console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
						return;

}

if ( ! targetObject.material.map ) {

console.error( 'THREE.PropertyBinding: Can not bind to material.map as node.material does not have a map.', this );
						return;

}

targetObject = targetObject.material.map;
					break;

default:

if ( targetObject[ objectName ] === undefined ) {

console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
						return;

}

targetObject = targetObject[ objectName ];

}

if ( objectIndex !== undefined ) {

if ( targetObject[ objectIndex ] === undefined ) {

console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
					return;

}

targetObject = targetObject[ objectIndex ];

}

// resolve property
		const nodeProperty = targetObject[ propertyName ];

if ( nodeProperty === undefined ) {

const nodeName = parsedPath.nodeName;

console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
				'.' + propertyName + ' but it wasn\'t found.', targetObject );
			return;

}

// determine versioning scheme
		let versioning = this.Versioning.None;

this.targetObject = targetObject;

if ( targetObject.needsUpdate !== undefined ) { // material

versioning = this.Versioning.NeedsUpdate;

} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform

versioning = this.Versioning.MatrixWorldNeedsUpdate;

}

// determine how the property gets bound
		let bindingType = this.BindingType.Direct;

if ( propertyIndex !== undefined ) {

// access a sub element of the property array (only primitives are supported right now)

if ( propertyName === 'morphTargetInfluences' ) {

// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.

// support resolving morphTarget names into indices.
				if ( ! targetObject.geometry ) {

console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
					return;

}

if ( ! targetObject.geometry.morphAttributes ) {

console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
					return;

}

if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {

propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];

}

bindingType = this.BindingType.ArrayElement;

this.resolvedProperty = nodeProperty;
			this.propertyIndex = propertyIndex;

} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {

// must use copy for Object3D.Euler/Quaternion

bindingType = this.BindingType.HasFromToArray;

this.resolvedProperty = nodeProperty;

} else if ( Array.isArray( nodeProperty ) ) {

bindingType = this.BindingType.EntireArray;

this.resolvedProperty = nodeProperty;

} else {

this.propertyName = propertyName;

}

// select getter / setter
		this.getValue = this.GetterByBindingType[ bindingType ];
		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];

}

unbind() {

this.node = null;

// back to the prototype version of getValue / setValue
		// note: avoiding to mutate the shape of 'this' via 'delete'
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;

}

PropertyBinding.Composite = Composite;

PropertyBinding.prototype.BindingType = {
	Direct: 0,
	EntireArray: 1,
	ArrayElement: 2,
	HasFromToArray: 3
};

PropertyBinding.prototype.Versioning = {
	None: 0,
	NeedsUpdate: 1,
	MatrixWorldNeedsUpdate: 2
};

PropertyBinding.prototype.GetterByBindingType = [

PropertyBinding.prototype._getValue_direct,
	PropertyBinding.prototype._getValue_array,
	PropertyBinding.prototype._getValue_arrayElement,
	PropertyBinding.prototype._getValue_toArray,

];

PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [

[
		// Direct
		PropertyBinding.prototype._setValue_direct,
		PropertyBinding.prototype._setValue_direct_setNeedsUpdate,
		PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate,

], [

// EntireArray

PropertyBinding.prototype._setValue_array,
		PropertyBinding.prototype._setValue_array_setNeedsUpdate,
		PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate,

], [

// ArrayElement
		PropertyBinding.prototype._setValue_arrayElement,
		PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,
		PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate,

], [

// HasToFromArray
		PropertyBinding.prototype._setValue_fromArray,
		PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,
		PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate,

]

];

/**
 *
 * A group of objects that receives a shared animation state.
 *
 * Usage:
 *
 *  - Add objects you would otherwise pass as 'root' to the
 *    constructor or the .clipAction method of AnimationMixer.
 *
 *  - Instead pass this object as 'root'.
 *
 *  - You can also add and remove objects later when the mixer
 *    is running.
 *
 * Note:
 *
 *    Objects of this class appear as one object to the mixer,
 *    so cache control of the individual objects must be done
 *    on the group.
 *
 * Limitation:
 *
 *  - The animated properties must be compatible among the
 *    all objects in the group.
 *
 *  - A single property can either be controlled through a
 *    target group or directly, but not both.
 */

class AnimationObjectGroup {

constructor() {

this.isAnimationObjectGroup = true;

this.uuid = generateUUID();

// cached objects followed by the active ones
		this._objects = Array.prototype.slice.call( arguments );

this.nCachedObjects_ = 0; // threshold
		// note: read by PropertyBinding.Composite

const indices = {};
		this._indicesByUUID = indices; // for bookkeeping

for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

indices[ arguments[ i ].uuid ] = i;

}

this._paths = []; // inside: string
		this._parsedPaths = []; // inside: { we don't care, here }
		this._bindings = []; // inside: Array< PropertyBinding >
		this._bindingsIndicesByPath = {}; // inside: indices in these arrays

const scope = this;

this.stats = {

objects: {
				get total() {

return scope._objects.length;

},
				get inUse() {

return this.total - scope.nCachedObjects_;

}
			},
			get bindingsPerObject() {

return scope._bindings.length;

}

};

}

add() {

const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			paths = this._paths,
			parsedPaths = this._parsedPaths,
			bindings = this._bindings,
			nBindings = bindings.length;

let knownObject = undefined,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_;

for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

const object = arguments[ i ],
				uuid = object.uuid;
			let index = indicesByUUID[ uuid ];

if ( index === undefined ) {

// unknown object -> add it to the ACTIVE region

index = nObjects ++;
				indicesByUUID[ uuid ] = index;
				objects.push( object );

// accounting is done, now do the same for all bindings

for ( let j = 0, m = nBindings; j !== m; ++ j ) {

bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );

}

} else if ( index < nCachedObjects ) {

knownObject = objects[ index ];

// move existing object to the ACTIVE region

const firstActiveIndex = -- nCachedObjects,
					lastCachedObject = objects[ firstActiveIndex ];

indicesByUUID[ lastCachedObject.uuid ] = index;
				objects[ index ] = lastCachedObject;

indicesByUUID[ uuid ] = firstActiveIndex;
				objects[ firstActiveIndex ] = object;

// accounting is done, now do the same for all bindings

for ( let j = 0, m = nBindings; j !== m; ++ j ) {

const bindingsForPath = bindings[ j ],
						lastCached = bindingsForPath[ firstActiveIndex ];

let binding = bindingsForPath[ index ];

bindingsForPath[ index ] = lastCached;

if ( binding === undefined ) {

// since we do not bother to create new bindings
						// for objects that are cached, the binding may
						// or may not exist

binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );

}

bindingsForPath[ firstActiveIndex ] = binding;

}

} else if ( objects[ index ] !== knownObject ) {

console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );

} // else the object is already where we want it to be

} // for arguments

this.nCachedObjects_ = nCachedObjects;

}

remove() {

const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

let nCachedObjects = this.nCachedObjects_;

for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

if ( index !== undefined && index >= nCachedObjects ) {

// move existing object into the CACHED region

const lastCachedIndex = nCachedObjects ++,
					firstActiveObject = objects[ lastCachedIndex ];

indicesByUUID[ firstActiveObject.uuid ] = index;
				objects[ index ] = firstActiveObject;

indicesByUUID[ uuid ] = lastCachedIndex;
				objects[ lastCachedIndex ] = object;

// accounting is done, now do the same for all bindings

for ( let j = 0, m = nBindings; j !== m; ++ j ) {

const bindingsForPath = bindings[ j ],
						firstActive = bindingsForPath[ lastCachedIndex ],
						binding = bindingsForPath[ index ];

bindingsForPath[ index ] = firstActive;
					bindingsForPath[ lastCachedIndex ] = binding;

}

} // for arguments

this.nCachedObjects_ = nCachedObjects;

}

// remove & forget
	uncache() {

const objects = this._objects,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

let nCachedObjects = this.nCachedObjects_,
			nObjects = objects.length;

for ( let i = 0, n = arguments.length; i !== n; ++ i ) {

const object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

if ( index !== undefined ) {

delete indicesByUUID[ uuid ];

if ( index < nCachedObjects ) {

// object is cached, shrink the CACHED region

const firstActiveIndex = -- nCachedObjects,
						lastCachedObject = objects[ firstActiveIndex ],
						lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

// last cached object takes this object's place
					indicesByUUID[ lastCachedObject.uuid ] = index;
					objects[ index ] = lastCachedObject;

// last object goes to the activated slot and pop
					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
					objects[ firstActiveIndex ] = lastObject;
					objects.pop();

// accounting is done, now do the same for all bindings

for ( let j = 0, m = nBindings; j !== m; ++ j ) {

const bindingsForPath = bindings[ j ],
							lastCached = bindingsForPath[ firstActiveIndex ],
							last = bindingsForPath[ lastIndex ];

bindingsForPath[ index ] = lastCached;
						bindingsForPath[ firstActiveIndex ] = last;
						bindingsForPath.pop();

}

} else {

// object is active, just swap with the last and pop

const lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

if ( lastIndex > 0 ) {

indicesByUUID[ lastObject.uuid ] = index;

}

objects[ index ] = lastObject;
					objects.pop();

// accounting is done, now do the same for all bindings

for ( let j = 0, m = nBindings; j !== m; ++ j ) {

const bindingsForPath = bindings[ j ];

bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
						bindingsForPath.pop();

}

} // cached or active

} // if object is known

} // for arguments

this.nCachedObjects_ = nCachedObjects;

}

// Internal interface used by befriended PropertyBinding.Composite:

subscribe_( path, parsedPath ) {

// returns an array of bindings for the given path that is changed
		// according to the contained objects in the group

const indicesByPath = this._bindingsIndicesByPath;
		let index = indicesByPath[ path ];
		const bindings = this._bindings;

if ( index !== undefined ) return bindings[ index ];

const paths = this._paths,
			parsedPaths = this._parsedPaths,
			objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			bindingsForPath = new Array( nObjects );

index = bindings.length;

indicesByPath[ path ] = index;

paths.push( path );
		parsedPaths.push( parsedPath );
		bindings.push( bindingsForPath );

for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {

const object = objects[ i ];
			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );

}

return bindingsForPath;

}

unsubscribe_( path ) {

// tells the group to forget about a property path and no longer
		// update the array previously obtained with 'subscribe_'

const indicesByPath = this._bindingsIndicesByPath,
			index = indicesByPath[ path ];

if ( index !== undefined ) {

const paths = this._paths,
				parsedPaths = this._parsedPaths,
				bindings = this._bindings,
				lastBindingsIndex = bindings.length - 1,
				lastBindings = bindings[ lastBindingsIndex ],
				lastBindingsPath = path[ lastBindingsIndex ];

indicesByPath[ lastBindingsPath ] = index;

bindings[ index ] = lastBindings;
			bindings.pop();

parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
			parsedPaths.pop();

paths[ index ] = paths[ lastBindingsIndex ];
			paths.pop();

}

class AnimationAction {

constructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {

this._mixer = mixer;
		this._clip = clip;
		this._localRoot = localRoot;
		this.blendMode = blendMode;

const tracks = clip.tracks,
			nTracks = tracks.length,
			interpolants = new Array( nTracks );

const interpolantSettings = {
			endingStart: ZeroCurvatureEnding,
			endingEnd: ZeroCurvatureEnding
		};

for ( let i = 0; i !== nTracks; ++ i ) {

const interpolant = tracks[ i ].createInterpolant( null );
			interpolants[ i ] = interpolant;
			interpolant.settings = interpolantSettings;

}

this._interpolantSettings = interpolantSettings;

this._interpolants = interpolants; // bound by the mixer

// inside: PropertyMixer (managed by the mixer)
		this._propertyBindings = new Array( nTracks );

this._cacheIndex = null; // for the memory manager
		this._byClipCacheIndex = null; // for the memory manager

this._timeScaleInterpolant = null;
		this._weightInterpolant = null;

this.loop = LoopRepeat;
		this._loopCount = - 1;

// global mixer time when the action is to be started
		// it's set back to 'null' upon start of the action
		this._startTime = null;

// scaled local time of the action
		// gets clamped or wrapped to 0..clip.duration according to loop
		this.time = 0;

this.timeScale = 1;
		this._effectiveTimeScale = 1;

this.weight = 1;
		this._effectiveWeight = 1;

this.repetitions = Infinity; // no. of repetitions when looping

this.paused = false; // true -> zero effective time scale
		this.enabled = true; // false -> zero effective weight

this.clampWhenFinished = false;// keep feeding the last frame?

this.zeroSlopeAtStart = true;// for smooth interpolation w/o separate
		this.zeroSlopeAtEnd = true;// clips for start, loop and end

}

// State & Scheduling

play() {

this._mixer._activateAction( this );

return this;

}

stop() {

this._mixer._deactivateAction( this );

return this.reset();

}

reset() {

this.paused = false;
		this.enabled = true;

this.time = 0; // restart clip
		this._loopCount = - 1;// forget previous loops
		this._startTime = null;// forget scheduling

return this.stopFading().stopWarping();

}

isRunning() {

return this.enabled && ! this.paused && this.timeScale !== 0 &&
			this._startTime === null && this._mixer._isActiveAction( this );

}

// return true when play has been called
	isScheduled() {

return this._mixer._isActiveAction( this );

}

startAt( time ) {

this._startTime = time;

return this;

}

setLoop( mode, repetitions ) {

this.loop = mode;
		this.repetitions = repetitions;

return this;

}

// Weight

// set the weight stopping any scheduled fading
	// although .enabled = false yields an effective weight of zero, this
	// method does *not* change .enabled, because it would be confusing
	setEffectiveWeight( weight ) {

this.weight = weight;

// note: same logic as when updated at runtime
		this._effectiveWeight = this.enabled ? weight : 0;

return this.stopFading();

}

// return the weight considering fading and .enabled
	getEffectiveWeight() {

return this._effectiveWeight;

}

fadeIn( duration ) {

return this._scheduleFading( duration, 0, 1 );

}

fadeOut( duration ) {

return this._scheduleFading( duration, 1, 0 );

}

crossFadeFrom( fadeOutAction, duration, warp ) {

fadeOutAction.fadeOut( duration );
		this.fadeIn( duration );

if ( warp ) {

const fadeInDuration = this._clip.duration,
				fadeOutDuration = fadeOutAction._clip.duration,

startEndRatio = fadeOutDuration / fadeInDuration,
				endStartRatio = fadeInDuration / fadeOutDuration;

fadeOutAction.warp( 1.0, startEndRatio, duration );
			this.warp( endStartRatio, 1.0, duration );

}

return this;

}

crossFadeTo( fadeInAction, duration, warp ) {

return fadeInAction.crossFadeFrom( this, duration, warp );

}

stopFading() {

const weightInterpolant = this._weightInterpolant;

if ( weightInterpolant !== null ) {

this._weightInterpolant = null;
			this._mixer._takeBackControlInterpolant( weightInterpolant );

}

return this;

}

// Time Scale Control

// set the time scale stopping any scheduled warping
	// although .paused = true yields an effective time scale of zero, this
	// method does *not* change .paused, because it would be confusing
	setEffectiveTimeScale( timeScale ) {

this.timeScale = timeScale;
		this._effectiveTimeScale = this.paused ? 0 : timeScale;

return this.stopWarping();

}

// return the time scale considering warping and .paused
	getEffectiveTimeScale() {

return this._effectiveTimeScale;

}

setDuration( duration ) {

this.timeScale = this._clip.duration / duration;

return this.stopWarping();

}

syncWith( action ) {

this.time = action.time;
		this.timeScale = action.timeScale;

return this.stopWarping();

}

halt( duration ) {

return this.warp( this._effectiveTimeScale, 0, duration );

}

warp( startTimeScale, endTimeScale, duration ) {

const mixer = this._mixer,
			now = mixer.time,
			timeScale = this.timeScale;

let interpolant = this._timeScaleInterpolant;

if ( interpolant === null ) {

interpolant = mixer._lendControlInterpolant();
			this._timeScaleInterpolant = interpolant;

}

const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

times[ 0 ] = now;
		times[ 1 ] = now + duration;

values[ 0 ] = startTimeScale / timeScale;
		values[ 1 ] = endTimeScale / timeScale;

return this;

}

stopWarping() {

const timeScaleInterpolant = this._timeScaleInterpolant;

if ( timeScaleInterpolant !== null ) {

this._timeScaleInterpolant = null;
			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );

}

return this;

}

// Object Accessors

getMixer() {

return this._mixer;

}

getClip() {

return this._clip;

}

getRoot() {

return this._localRoot || this._mixer._root;

}

// Interna

_update( time, deltaTime, timeDirection, accuIndex ) {

// called by the mixer

if ( ! this.enabled ) {

// call ._updateWeight() to update ._effectiveWeight

this._updateWeight( time );
			return;

}

const startTime = this._startTime;

if ( startTime !== null ) {

// check for scheduled start of action

const timeRunning = ( time - startTime ) * timeDirection;
			if ( timeRunning < 0 || timeDirection === 0 ) {

deltaTime = 0;

} else {

this._startTime = null; // unschedule
				deltaTime = timeDirection * timeRunning;

}

// apply time scale and advance time

deltaTime *= this._updateTimeScale( time );
		const clipTime = this._updateTime( deltaTime );

// note: _updateTime may disable the action resulting in
		// an effective weight of 0

const weight = this._updateWeight( time );

if ( weight > 0 ) {

const interpolants = this._interpolants;
			const propertyMixers = this._propertyBindings;

switch ( this.blendMode ) {

case AdditiveAnimationBlendMode:

for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulateAdditive( weight );

}

break;

case NormalAnimationBlendMode:
				default:

for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {

interpolants[ j ].evaluate( clipTime );
						propertyMixers[ j ].accumulate( accuIndex, weight );

}

_updateWeight( time ) {

let weight = 0;

if ( this.enabled ) {

weight = this.weight;
			const interpolant = this._weightInterpolant;

if ( interpolant !== null ) {

const interpolantValue = interpolant.evaluate( time )[ 0 ];

weight *= interpolantValue;

if ( time > interpolant.parameterPositions[ 1 ] ) {

this.stopFading();

if ( interpolantValue === 0 ) {

// faded out, disable
						this.enabled = false;

}

this._effectiveWeight = weight;
		return weight;

}

_updateTimeScale( time ) {

let timeScale = 0;

if ( ! this.paused ) {

timeScale = this.timeScale;

const interpolant = this._timeScaleInterpolant;

if ( interpolant !== null ) {

const interpolantValue = interpolant.evaluate( time )[ 0 ];

timeScale *= interpolantValue;

if ( time > interpolant.parameterPositions[ 1 ] ) {

this.stopWarping();

if ( timeScale === 0 ) {

// motion has halted, pause
						this.paused = true;

} else {

// warp done - apply final time scale
						this.timeScale = timeScale;

}

this._effectiveTimeScale = timeScale;
		return timeScale;

}

_updateTime( deltaTime ) {

const duration = this._clip.duration;
		const loop = this.loop;

let time = this.time + deltaTime;
		let loopCount = this._loopCount;

const pingPong = ( loop === LoopPingPong );

if ( deltaTime === 0 ) {

if ( loopCount === - 1 ) return time;

return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;

}

if ( loop === LoopOnce ) {

if ( loopCount === - 1 ) {

// just started

this._loopCount = 0;
				this._setEndings( true, true, false );

}

handle_stop: {

if ( time >= duration ) {

time = duration;

} else if ( time < 0 ) {

time = 0;

} else {

this.time = time;

break handle_stop;

}

if ( this.clampWhenFinished ) this.paused = true;
				else this.enabled = false;

this.time = time;

this._mixer.dispatchEvent( {
					type: 'finished', action: this,
					direction: deltaTime < 0 ? - 1 : 1
				} );

}

} else { // repetitive Repeat or PingPong

if ( loopCount === - 1 ) {

// just started

if ( deltaTime >= 0 ) {

loopCount = 0;

this._setEndings( true, this.repetitions === 0, pingPong );

} else {

// when looping in reverse direction, the initial
					// transition through zero counts as a repetition,
					// so leave loopCount at -1

this._setEndings( this.repetitions === 0, true, pingPong );

}

if ( time >= duration || time < 0 ) {

// wrap around

const loopDelta = Math.floor( time / duration ); // signed
				time -= duration * loopDelta;

loopCount += Math.abs( loopDelta );

const pending = this.repetitions - loopCount;

if ( pending <= 0 ) {

// have to stop (switch state, clamp time, fire event)

if ( this.clampWhenFinished ) this.paused = true;
					else this.enabled = false;

time = deltaTime > 0 ? duration : 0;

this.time = time;

this._mixer.dispatchEvent( {
						type: 'finished', action: this,
						direction: deltaTime > 0 ? 1 : - 1
					} );

} else {

// keep running

if ( pending === 1 ) {

// entering the last round

const atStart = deltaTime < 0;
						this._setEndings( atStart, ! atStart, pingPong );

} else {

this._setEndings( false, false, pingPong );

}

this._loopCount = loopCount;

this.time = time;

this._mixer.dispatchEvent( {
						type: 'loop', action: this, loopDelta: loopDelta
					} );

}

} else {

this.time = time;

}

if ( pingPong && ( loopCount & 1 ) === 1 ) {

// invert time for the "pong round"

return duration - time;

}

return time;

}

_setEndings( atStart, atEnd, pingPong ) {

const settings = this._interpolantSettings;

if ( pingPong ) {

settings.endingStart = ZeroSlopeEnding;
			settings.endingEnd = ZeroSlopeEnding;

} else {

// assuming for LoopOnce atStart == atEnd == true

if ( atStart ) {

settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;

} else {

settings.endingStart = WrapAroundEnding;

}

if ( atEnd ) {

settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;

} else {

settings.endingEnd 	 = WrapAroundEnding;

}

_scheduleFading( duration, weightNow, weightThen ) {

const mixer = this._mixer, now = mixer.time;
		let interpolant = this._weightInterpolant;

if ( interpolant === null ) {

interpolant = mixer._lendControlInterpolant();
			this._weightInterpolant = interpolant;

}

const times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

times[ 0 ] = now;
		values[ 0 ] = weightNow;
		times[ 1 ] = now + duration;
		values[ 1 ] = weightThen;

return this;

}

const _controlInterpolantsResultBuffer = new Float32Array( 1 );

class AnimationMixer extends EventDispatcher {

constructor( root ) {

super();

this._root = root;
		this._initMemoryManager();
		this._accuIndex = 0;
		this.time = 0;
		this.timeScale = 1.0;

}

_bindAction( action, prototypeAction ) {

const root = action._localRoot || this._root,
			tracks = action._clip.tracks,
			nTracks = tracks.length,
			bindings = action._propertyBindings,
			interpolants = action._interpolants,
			rootUuid = root.uuid,
			bindingsByRoot = this._bindingsByRootAndName;

let bindingsByName = bindingsByRoot[ rootUuid ];

if ( bindingsByName === undefined ) {

bindingsByName = {};
			bindingsByRoot[ rootUuid ] = bindingsByName;

}

for ( let i = 0; i !== nTracks; ++ i ) {

const track = tracks[ i ],
				trackName = track.name;

let binding = bindingsByName[ trackName ];

if ( binding !== undefined ) {

++ binding.referenceCount;
				bindings[ i ] = binding;

} else {

binding = bindings[ i ];

if ( binding !== undefined ) {

// existing binding, make sure the cache knows

if ( binding._cacheIndex === null ) {

++ binding.referenceCount;
						this._addInactiveBinding( binding, rootUuid, trackName );

}

continue;

}

const path = prototypeAction && prototypeAction.
					_propertyBindings[ i ].binding.parsedPath;

binding = new PropertyMixer(
					PropertyBinding.create( root, trackName, path ),
					track.ValueTypeName, track.getValueSize() );

++ binding.referenceCount;
				this._addInactiveBinding( binding, rootUuid, trackName );

bindings[ i ] = binding;

}

interpolants[ i ].resultBuffer = binding.buffer;

}

_activateAction( action ) {

if ( ! this._isActiveAction( action ) ) {

if ( action._cacheIndex === null ) {

// this action has been forgotten by the cache, but the user
				// appears to be still using it -> rebind

const rootUuid = ( action._localRoot || this._root ).uuid,
					clipUuid = action._clip.uuid,
					actionsForClip = this._actionsByClip[ clipUuid ];

this._bindAction( action,
					actionsForClip && actionsForClip.knownActions[ 0 ] );

this._addInactiveAction( action, clipUuid, rootUuid );

}

const bindings = action._propertyBindings;

// increment reference counts / sort out state
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

const binding = bindings[ i ];

if ( binding.useCount ++ === 0 ) {

this._lendBinding( binding );
					binding.saveOriginalState();

}

this._lendAction( action );

}

_deactivateAction( action ) {

if ( this._isActiveAction( action ) ) {

const bindings = action._propertyBindings;

// decrement reference counts / sort out state
			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

const binding = bindings[ i ];

if ( -- binding.useCount === 0 ) {

binding.restoreOriginalState();
					this._takeBackBinding( binding );

}

this._takeBackAction( action );

}

// Memory manager

_initMemoryManager() {

this._actions = []; // 'nActiveActions' followed by inactive ones
		this._nActiveActions = 0;

this._actionsByClip = {};
		// inside:
		// {
		// 	knownActions: Array< AnimationAction > - used as prototypes
		// 	actionByRoot: AnimationAction - lookup
		// }

this._bindings = []; // 'nActiveBindings' followed by inactive ones
		this._nActiveBindings = 0;

this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >

this._controlInterpolants = []; // same game as above
		this._nActiveControlInterpolants = 0;

const scope = this;

this.stats = {

actions: {
				get total() {

return scope._actions.length;

},
				get inUse() {

return scope._nActiveActions;

}
			},
			bindings: {
				get total() {

return scope._bindings.length;

},
				get inUse() {

return scope._nActiveBindings;

}
			},
			controlInterpolants: {
				get total() {

return scope._controlInterpolants.length;

},
				get inUse() {

return scope._nActiveControlInterpolants;

}
			}

};

}

// Memory management for AnimationAction objects

_isActiveAction( action ) {

const index = action._cacheIndex;
		return index !== null && index < this._nActiveActions;

}

_addInactiveAction( action, clipUuid, rootUuid ) {

const actions = this._actions,
			actionsByClip = this._actionsByClip;

let actionsForClip = actionsByClip[ clipUuid ];

if ( actionsForClip === undefined ) {

actionsForClip = {

knownActions: [ action ],
				actionByRoot: {}

};

action._byClipCacheIndex = 0;

actionsByClip[ clipUuid ] = actionsForClip;

} else {

const knownActions = actionsForClip.knownActions;

action._byClipCacheIndex = knownActions.length;
			knownActions.push( action );

}

action._cacheIndex = actions.length;
		actions.push( action );

actionsForClip.actionByRoot[ rootUuid ] = action;

}

_removeInactiveAction( action ) {

const actions = this._actions,
			lastInactiveAction = actions[ actions.length - 1 ],
			cacheIndex = action._cacheIndex;

lastInactiveAction._cacheIndex = cacheIndex;
		actions[ cacheIndex ] = lastInactiveAction;
		actions.pop();

action._cacheIndex = null;

const clipUuid = action._clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ],
			knownActionsForClip = actionsForClip.knownActions,

lastKnownAction =
				knownActionsForClip[ knownActionsForClip.length - 1 ],

byClipCacheIndex = action._byClipCacheIndex;

lastKnownAction._byClipCacheIndex = byClipCacheIndex;
		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
		knownActionsForClip.pop();

action._byClipCacheIndex = null;

const actionByRoot = actionsForClip.actionByRoot,
			rootUuid = ( action._localRoot || this._root ).uuid;

delete actionByRoot[ rootUuid ];

if ( knownActionsForClip.length === 0 ) {

delete actionsByClip[ clipUuid ];

}

this._removeInactiveBindingsForAction( action );

}

_removeInactiveBindingsForAction( action ) {

const bindings = action._propertyBindings;

for ( let i = 0, n = bindings.length; i !== n; ++ i ) {

const binding = bindings[ i ];

if ( -- binding.referenceCount === 0 ) {

this._removeInactiveBinding( binding );

}

_lendAction( action ) {

// [ active actions |  inactive actions  ]
		// [  active actions >| inactive actions ]
		//                 s        a
		//                  <-swap->
		//                 a        s

const actions = this._actions,
			prevIndex = action._cacheIndex,

lastActiveIndex = this._nActiveActions ++,

firstInactiveAction = actions[ lastActiveIndex ];

action._cacheIndex = lastActiveIndex;
		actions[ lastActiveIndex ] = action;

firstInactiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = firstInactiveAction;

}

_takeBackAction( action ) {

// [  active actions  | inactive actions ]
		// [ active actions |< inactive actions  ]
		//        a        s
		//         <-swap->
		//        s        a

const actions = this._actions,
			prevIndex = action._cacheIndex,

firstInactiveIndex = -- this._nActiveActions,

lastActiveAction = actions[ firstInactiveIndex ];

action._cacheIndex = firstInactiveIndex;
		actions[ firstInactiveIndex ] = action;

lastActiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = lastActiveAction;

}

// Memory management for PropertyMixer objects

_addInactiveBinding( binding, rootUuid, trackName ) {

const bindingsByRoot = this._bindingsByRootAndName,
			bindings = this._bindings;

let bindingByName = bindingsByRoot[ rootUuid ];

if ( bindingByName === undefined ) {

bindingByName = {};
			bindingsByRoot[ rootUuid ] = bindingByName;

}

bindingByName[ trackName ] = binding;

binding._cacheIndex = bindings.length;
		bindings.push( binding );

}

_removeInactiveBinding( binding ) {

const bindings = this._bindings,
			propBinding = binding.binding,
			rootUuid = propBinding.rootNode.uuid,
			trackName = propBinding.path,
			bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ],

lastInactiveBinding = bindings[ bindings.length - 1 ],
			cacheIndex = binding._cacheIndex;

lastInactiveBinding._cacheIndex = cacheIndex;
		bindings[ cacheIndex ] = lastInactiveBinding;
		bindings.pop();

delete bindingByName[ trackName ];

if ( Object.keys( bindingByName ).length === 0 ) {

delete bindingsByRoot[ rootUuid ];

}

_lendBinding( binding ) {

const bindings = this._bindings,
			prevIndex = binding._cacheIndex,

lastActiveIndex = this._nActiveBindings ++,

firstInactiveBinding = bindings[ lastActiveIndex ];

binding._cacheIndex = lastActiveIndex;
		bindings[ lastActiveIndex ] = binding;

firstInactiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = firstInactiveBinding;

}

_takeBackBinding( binding ) {

const bindings = this._bindings,
			prevIndex = binding._cacheIndex,

firstInactiveIndex = -- this._nActiveBindings,

lastActiveBinding = bindings[ firstInactiveIndex ];

binding._cacheIndex = firstInactiveIndex;
		bindings[ firstInactiveIndex ] = binding;

lastActiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = lastActiveBinding;

}

// Memory management of Interpolants for weight and time scale

_lendControlInterpolant() {

const interpolants = this._controlInterpolants,
			lastActiveIndex = this._nActiveControlInterpolants ++;

let interpolant = interpolants[ lastActiveIndex ];

if ( interpolant === undefined ) {

interpolant = new LinearInterpolant(
				new Float32Array( 2 ), new Float32Array( 2 ),
				1, _controlInterpolantsResultBuffer );

interpolant.__cacheIndex = lastActiveIndex;
			interpolants[ lastActiveIndex ] = interpolant;

}

return interpolant;

}

_takeBackControlInterpolant( interpolant ) {

const interpolants = this._controlInterpolants,
			prevIndex = interpolant.__cacheIndex,

firstInactiveIndex = -- this._nActiveControlInterpolants,

lastActiveInterpolant = interpolants[ firstInactiveIndex ];

interpolant.__cacheIndex = firstInactiveIndex;
		interpolants[ firstInactiveIndex ] = interpolant;

lastActiveInterpolant.__cacheIndex = prevIndex;
		interpolants[ prevIndex ] = lastActiveInterpolant;

}

// return an action for a clip optionally using a custom root target
	// object (this method allocates a lot of dynamic memory in case a
	// previously unknown clip/root combination is specified)
	clipAction( clip, optionalRoot, blendMode ) {

const root = optionalRoot || this._root,
			rootUuid = root.uuid;

let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;

const clipUuid = clipObject !== null ? clipObject.uuid : clip;

const actionsForClip = this._actionsByClip[ clipUuid ];
		let prototypeAction = null;

if ( blendMode === undefined ) {

if ( clipObject !== null ) {

blendMode = clipObject.blendMode;

} else {

blendMode = NormalAnimationBlendMode;

}

if ( actionsForClip !== undefined ) {

const existingAction = actionsForClip.actionByRoot[ rootUuid ];

if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {

return existingAction;

}

// we know the clip, so we don't have to parse all
			// the bindings again but can just copy
			prototypeAction = actionsForClip.knownActions[ 0 ];

// also, take the clip from the prototype action
			if ( clipObject === null )
				clipObject = prototypeAction._clip;

}

// clip must be known when specified via string
		if ( clipObject === null ) return null;

// allocate all resources required to run it
		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );

this._bindAction( newAction, prototypeAction );

// and make the action known to the memory manager
		this._addInactiveAction( newAction, clipUuid, rootUuid );

return newAction;

}

// get an existing action
	existingAction( clip, optionalRoot ) {

const root = optionalRoot || this._root,
			rootUuid = root.uuid,

clipObject = typeof clip === 'string' ?
				AnimationClip.findByName( root, clip ) : clip,

clipUuid = clipObject ? clipObject.uuid : clip,

actionsForClip = this._actionsByClip[ clipUuid ];

if ( actionsForClip !== undefined ) {

return actionsForClip.actionByRoot[ rootUuid ] || null;

}

return null;

}

// deactivates all previously scheduled actions
	stopAllAction() {

const actions = this._actions,
			nActions = this._nActiveActions;

for ( let i = nActions - 1; i >= 0; -- i ) {

actions[ i ].stop();

}

return this;

}

// advance the time and update apply the animation
	update( deltaTime ) {

deltaTime *= this.timeScale;

const actions = this._actions,
			nActions = this._nActiveActions,

time = this.time += deltaTime,
			timeDirection = Math.sign( deltaTime ),

accuIndex = this._accuIndex ^= 1;

// run active actions

for ( let i = 0; i !== nActions; ++ i ) {

const action = actions[ i ];

action._update( time, deltaTime, timeDirection, accuIndex );

}

// update scene graph

const bindings = this._bindings,
			nBindings = this._nActiveBindings;

for ( let i = 0; i !== nBindings; ++ i ) {

bindings[ i ].apply( accuIndex );

}

return this;

}

// Allows you to seek to a specific time in an animation.
	setTime( timeInSeconds ) {

this.time = 0; // Zero out time attribute for AnimationMixer object;
		for ( let i = 0; i < this._actions.length; i ++ ) {

this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.

}

return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.

}

// return this mixer's root target object
	getRoot() {

return this._root;

}

// free all resources specific to a particular clip
	uncacheClip( clip ) {

const actions = this._actions,
			clipUuid = clip.uuid,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipUuid ];

if ( actionsForClip !== undefined ) {

// note: just calling _removeInactiveAction would mess up the
			// iteration state and also require updating the state we can
			// just throw away

const actionsToRemove = actionsForClip.knownActions;

for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {

const action = actionsToRemove[ i ];

this._deactivateAction( action );

const cacheIndex = action._cacheIndex,
					lastInactiveAction = actions[ actions.length - 1 ];

action._cacheIndex = null;
				action._byClipCacheIndex = null;

lastInactiveAction._cacheIndex = cacheIndex;
				actions[ cacheIndex ] = lastInactiveAction;
				actions.pop();

this._removeInactiveBindingsForAction( action );

}

delete actionsByClip[ clipUuid ];

}

// free all resources specific to a particular root target object
	uncacheRoot( root ) {

const rootUuid = root.uuid,
			actionsByClip = this._actionsByClip;

for ( const clipUuid in actionsByClip ) {

const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
				action = actionByRoot[ rootUuid ];

if ( action !== undefined ) {

this._deactivateAction( action );
				this._removeInactiveAction( action );

}

const bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ];

if ( bindingByName !== undefined ) {

for ( const trackName in bindingByName ) {

const binding = bindingByName[ trackName ];
				binding.restoreOriginalState();
				this._removeInactiveBinding( binding );

}

// remove a targeted clip from the cache
	uncacheAction( clip, optionalRoot ) {

const action = this.existingAction( clip, optionalRoot );

if ( action !== null ) {

this._deactivateAction( action );
			this._removeInactiveAction( action );

}

class Uniform {

constructor( value ) {

this.value = value;

}

clone() {

return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );

}

let id = 0;

class UniformsGroup extends EventDispatcher {

constructor() {

super();

this.isUniformsGroup = true;

Object.defineProperty( this, 'id', { value: id ++ } );

this.name = '';

this.usage = StaticDrawUsage;
		this.uniforms = [];

}

add( uniform ) {

this.uniforms.push( uniform );

return this;

}

remove( uniform ) {

const index = this.uniforms.indexOf( uniform );

if ( index !== - 1 ) this.uniforms.splice( index, 1 );

return this;

}

setName( name ) {

this.name = name;

return this;

}

setUsage( value ) {

this.usage = value;

return this;

}

dispose() {

this.dispatchEvent( { type: 'dispose' } );

return this;

}

copy( source ) {

this.name = source.name;
		this.usage = source.usage;

const uniformsSource = source.uniforms;

this.uniforms.length = 0;

for ( let i = 0, l = uniformsSource.length; i < l; i ++ ) {

this.uniforms.push( uniformsSource[ i ].clone() );

}

return this;

}

clone() {

return new this.constructor().copy( this );

}

class InstancedInterleavedBuffer extends InterleavedBuffer {

constructor( array, stride, meshPerAttribute = 1 ) {

super( array, stride );

this.isInstancedInterleavedBuffer = true;

this.meshPerAttribute = meshPerAttribute;

}

copy( source ) {

super.copy( source );

this.meshPerAttribute = source.meshPerAttribute;

return this;

}

clone( data ) {

const ib = super.clone( data );

ib.meshPerAttribute = this.meshPerAttribute;

return ib;

}

toJSON( data ) {

const json = super.toJSON( data );

json.isInstancedInterleavedBuffer = true;
		json.meshPerAttribute = this.meshPerAttribute;

return json;

}

class GLBufferAttribute {

constructor( buffer, type, itemSize, elementSize, count ) {

this.isGLBufferAttribute = true;

this.name = '';

this.buffer = buffer;
		this.type = type;
		this.itemSize = itemSize;
		this.elementSize = elementSize;
		this.count = count;

this.version = 0;

}

set needsUpdate( value ) {

if ( value === true ) this.version ++;

}

setBuffer( buffer ) {

this.buffer = buffer;

return this;

}

setType( type, elementSize ) {

this.type = type;
		this.elementSize = elementSize;

return this;

}

setItemSize( itemSize ) {

this.itemSize = itemSize;

return this;

}

setCount( count ) {

this.count = count;

return this;

}

class Raycaster {

constructor( origin, direction, near = 0, far = Infinity ) {

this.ray = new Ray( origin, direction );
		// direction is assumed to be normalized (for accurate distance calculations)

this.near = near;
		this.far = far;
		this.camera = null;
		this.layers = new Layers();

this.params = {
			Mesh: {},
			Line: { threshold: 1 },
			LOD: {},
			Points: { threshold: 1 },
			Sprite: {}
		};

}

set( origin, direction ) {

// direction is assumed to be normalized (for accurate distance calculations)

this.ray.set( origin, direction );

}

setFromCamera( coords, camera ) {

if ( camera.isPerspectiveCamera ) {

this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
			this.camera = camera;

} else if ( camera.isOrthographicCamera ) {

this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
			this.camera = camera;

} else {

console.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );

}

intersectObject( object, recursive = true, intersects = [] ) {

intersectObject( object, this, intersects, recursive );

intersects.sort( ascSort );

return intersects;

}

intersectObjects( objects, recursive = true, intersects = [] ) {

for ( let i = 0, l = objects.length; i < l; i ++ ) {

intersectObject( objects[ i ], this, intersects, recursive );

}

intersects.sort( ascSort );

return intersects;

}

function ascSort( a, b ) {

return a.distance - b.distance;

}

function intersectObject( object, raycaster, intersects, recursive ) {

if ( object.layers.test( raycaster.layers ) ) {

object.raycast( raycaster, intersects );

}

if ( recursive === true ) {

const children = object.children;

for ( let i = 0, l = children.length; i < l; i ++ ) {

intersectObject( children[ i ], raycaster, intersects, true );

}

/**
 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
 *
 * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
 * The azimuthal angle (theta) is measured from the positive z-axis.
 */

class Spherical {

constructor( radius = 1, phi = 0, theta = 0 ) {

this.radius = radius;
		this.phi = phi; // polar angle
		this.theta = theta; // azimuthal angle

return this;

}

set( radius, phi, theta ) {

this.radius = radius;
		this.phi = phi;
		this.theta = theta;

return this;

}

copy( other ) {

this.radius = other.radius;
		this.phi = other.phi;
		this.theta = other.theta;

return this;

}

// restrict phi to be between EPS and PI-EPS
	makeSafe() {

const EPS = 0.000001;
		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );

return this;

}

setFromVector3( v ) {

return this.setFromCartesianCoords( v.x, v.y, v.z );

}

setFromCartesianCoords( x, y, z ) {

this.radius = Math.sqrt( x * x + y * y + z * z );

if ( this.radius === 0 ) {

this.theta = 0;
			this.phi = 0;

} else {

this.theta = Math.atan2( x, z );
			this.phi = Math.acos( clamp( y / this.radius, - 1, 1 ) );

}

return this;

}

clone() {

return new this.constructor().copy( this );

}

/**
 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
 */

class Cylindrical {

constructor( radius = 1, theta = 0, y = 0 ) {

this.radius = radius; // distance from the origin to a point in the x-z plane
		this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
		this.y = y; // height above the x-z plane

return this;

}

set( radius, theta, y ) {

this.radius = radius;
		this.theta = theta;
		this.y = y;

return this;

}

copy( other ) {

this.radius = other.radius;
		this.theta = other.theta;
		this.y = other.y;

return this;

}

setFromVector3( v ) {

return this.setFromCartesianCoords( v.x, v.y, v.z );

}

setFromCartesianCoords( x, y, z ) {

this.radius = Math.sqrt( x * x + z * z );
		this.theta = Math.atan2( x, z );
		this.y = y;

return this;

}

clone() {

return new this.constructor().copy( this );

}

const _vector$4 = /*@__PURE__*/ new Vector2();

class Box2 {

constructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {

this.isBox2 = true;

this.min = min;
		this.max = max;

}

set( min, max ) {

this.min.copy( min );
		this.max.copy( max );

return this;

}

setFromPoints( points ) {

this.makeEmpty();

for ( let i = 0, il = points.length; i < il; i ++ ) {

this.expandByPoint( points[ i ] );

}

return this;

}

setFromCenterAndSize( center, size ) {

const halfSize = _vector$4.copy( size ).multiplyScalar( 0.5 );
		this.min.copy( center ).sub( halfSize );
		this.max.copy( center ).add( halfSize );

return this;

}

clone() {

return new this.constructor().copy( this );

}

copy( box ) {

this.min.copy( box.min );
		this.max.copy( box.max );

return this;

}

makeEmpty() {

this.min.x = this.min.y = + Infinity;
		this.max.x = this.max.y = - Infinity;

return this;

}

isEmpty() {

// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );

}

getCenter( target ) {

return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

}

getSize( target ) {

return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );

}

expandByPoint( point ) {

this.min.min( point );
		this.max.max( point );

return this;

}

expandByVector( vector ) {

this.min.sub( vector );
		this.max.add( vector );

return this;

}

expandByScalar( scalar ) {

this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

return this;

}

containsPoint( point ) {

return point.x < this.min.x || point.x > this.max.x ||
			point.y < this.min.y || point.y > this.max.y ? false : true;

}

containsBox( box ) {

return this.min.x <= box.min.x && box.max.x <= this.max.x &&
			this.min.y <= box.min.y && box.max.y <= this.max.y;

}

getParameter( point, target ) {

// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

return target.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y )
		);

}

intersectsBox( box ) {

// using 4 splitting planes to rule out intersections

return box.max.x < this.min.x || box.min.x > this.max.x ||
			box.max.y < this.min.y || box.min.y > this.max.y ? false : true;

}

clampPoint( point, target ) {

return target.copy( point ).clamp( this.min, this.max );

}

distanceToPoint( point ) {

return this.clampPoint( point, _vector$4 ).distanceTo( point );

}

intersect( box ) {

this.min.max( box.min );
		this.max.min( box.max );

if ( this.isEmpty() ) this.makeEmpty();

return this;

}

union( box ) {

this.min.min( box.min );
		this.max.max( box.max );

return this;

}

translate( offset ) {

this.min.add( offset );
		this.max.add( offset );

return this;

}

equals( box ) {

return box.min.equals( this.min ) && box.max.equals( this.max );

}

const _startP = /*@__PURE__*/ new Vector3();
const _startEnd = /*@__PURE__*/ new Vector3();

class Line3 {

constructor( start = new Vector3(), end = new Vector3() ) {

this.start = start;
		this.end = end;

}

set( start, end ) {

this.start.copy( start );
		this.end.copy( end );

return this;

}

copy( line ) {

this.start.copy( line.start );
		this.end.copy( line.end );

return this;

}

getCenter( target ) {

return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );

}

delta( target ) {

return target.subVectors( this.end, this.start );

}

distanceSq() {

return this.start.distanceToSquared( this.end );

}

distance() {

return this.start.distanceTo( this.end );

}

at( t, target ) {

return this.delta( target ).multiplyScalar( t ).add( this.start );

}

closestPointToPointParameter( point, clampToLine ) {

_startP.subVectors( point, this.start );
		_startEnd.subVectors( this.end, this.start );

const startEnd2 = _startEnd.dot( _startEnd );
		const startEnd_startP = _startEnd.dot( _startP );

let t = startEnd_startP / startEnd2;

if ( clampToLine ) {

t = clamp( t, 0, 1 );

}

return t;

}

closestPointToPoint( point, clampToLine, target ) {

const t = this.closestPointToPointParameter( point, clampToLine );

return this.delta( target ).multiplyScalar( t ).add( this.start );

}

applyMatrix4( matrix ) {

this.start.applyMatrix4( matrix );
		this.end.applyMatrix4( matrix );

return this;

}

equals( line ) {

return line.start.equals( this.start ) && line.end.equals( this.end );

}

clone() {

return new this.constructor().copy( this );

}

const _vector$3 = /*@__PURE__*/ new Vector3();

class SpotLightHelper extends Object3D {

constructor( light, color ) {

super();

this.light = light;

this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

this.color = color;

this.type = 'SpotLightHelper';

const geometry = new BufferGeometry();

const positions = [
			0, 0, 0, 	0, 0, 1,
			0, 0, 0, 	1, 0, 1,
			0, 0, 0,	- 1, 0, 1,
			0, 0, 0, 	0, 1, 1,
			0, 0, 0, 	0, - 1, 1
		];

for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {

const p1 = ( i / l ) * Math.PI * 2;
			const p2 = ( j / l ) * Math.PI * 2;

positions.push(
				Math.cos( p1 ), Math.sin( p1 ), 1,
				Math.cos( p2 ), Math.sin( p2 ), 1
			);

}

geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

this.cone = new LineSegments( geometry, material );
		this.add( this.cone );

this.update();

}

dispose() {

this.cone.geometry.dispose();
		this.cone.material.dispose();

}

update() {

this.light.updateWorldMatrix( true, false );
		this.light.target.updateWorldMatrix( true, false );

const coneLength = this.light.distance ? this.light.distance : 1000;
		const coneWidth = coneLength * Math.tan( this.light.angle );

this.cone.scale.set( coneWidth, coneWidth, coneLength );

_vector$3.setFromMatrixPosition( this.light.target.matrixWorld );

this.cone.lookAt( _vector$3 );

if ( this.color !== undefined ) {

this.cone.material.color.set( this.color );

} else {

this.cone.material.color.copy( this.light.color );

}

const _vector$2 = /*@__PURE__*/ new Vector3();
const _boneMatrix = /*@__PURE__*/ new Matrix4();
const _matrixWorldInv = /*@__PURE__*/ new Matrix4();

class SkeletonHelper extends LineSegments {

constructor( object ) {

const bones = getBoneList( object );

const geometry = new BufferGeometry();

const vertices = [];
		const colors = [];

const color1 = new Color( 0, 0, 1 );
		const color2 = new Color( 0, 1, 0 );

for ( let i = 0; i < bones.length; i ++ ) {

const bone = bones[ i ];

if ( bone.parent && bone.parent.isBone ) {

vertices.push( 0, 0, 0 );
				vertices.push( 0, 0, 0 );
				colors.push( color1.r, color1.g, color1.b );
				colors.push( color2.r, color2.g, color2.b );

}

geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );

super( geometry, material );

this.isSkeletonHelper = true;

this.type = 'SkeletonHelper';

this.root = object;
		this.bones = bones;

this.matrix = object.matrixWorld;
		this.matrixAutoUpdate = false;

}

updateMatrixWorld( force ) {

const bones = this.bones;

const geometry = this.geometry;
		const position = geometry.getAttribute( 'position' );

_matrixWorldInv.copy( this.root.matrixWorld ).invert();

for ( let i = 0, j = 0; i < bones.length; i ++ ) {

const bone = bones[ i ];

if ( bone.parent && bone.parent.isBone ) {

_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
				_vector$2.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j, _vector$2.x, _vector$2.y, _vector$2.z );

_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
				_vector$2.setFromMatrixPosition( _boneMatrix );
				position.setXYZ( j + 1, _vector$2.x, _vector$2.y, _vector$2.z );

j += 2;

}

geometry.getAttribute( 'position' ).needsUpdate = true;

super.updateMatrixWorld( force );

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

function getBoneList( object ) {

const boneList = [];

if ( object.isBone === true ) {

boneList.push( object );

}

for ( let i = 0; i < object.children.length; i ++ ) {

boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );

}

return boneList;

}

class PointLightHelper extends Mesh {

constructor( light, sphereSize, color ) {

const geometry = new SphereGeometry( sphereSize, 4, 2 );
		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );

super( geometry, material );

this.light = light;

this.color = color;

this.type = 'PointLightHelper';

this.matrix = this.light.matrixWorld;
		this.matrixAutoUpdate = false;

this.update();

/*
	// TODO: delete this comment?
	const distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
	const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );

this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );

const d = light.distance;

if ( d === 0.0 ) {

this.lightDistance.visible = false;

} else {

this.lightDistance.scale.set( d, d, d );

}

this.add( this.lightDistance );
	*/

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

update() {

this.light.updateWorldMatrix( true, false );

if ( this.color !== undefined ) {

this.material.color.set( this.color );

} else {

this.material.color.copy( this.light.color );

}

/*
		const d = this.light.distance;

if ( d === 0.0 ) {

this.lightDistance.visible = false;

} else {

this.lightDistance.visible = true;
			this.lightDistance.scale.set( d, d, d );

}
		*/

}

const _vector$1 = /*@__PURE__*/ new Vector3();
const _color1 = /*@__PURE__*/ new Color();
const _color2 = /*@__PURE__*/ new Color();

class HemisphereLightHelper extends Object3D {

constructor( light, size, color ) {

super();

this.light = light;

this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

this.color = color;

this.type = 'HemisphereLightHelper';

const geometry = new OctahedronGeometry( size );
		geometry.rotateY( Math.PI * 0.5 );

this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
		if ( this.color === undefined ) this.material.vertexColors = true;

const position = geometry.getAttribute( 'position' );
		const colors = new Float32Array( position.count * 3 );

geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );

this.add( new Mesh( geometry, this.material ) );

this.update();

}

dispose() {

this.children[ 0 ].geometry.dispose();
		this.children[ 0 ].material.dispose();

}

update() {

const mesh = this.children[ 0 ];

if ( this.color !== undefined ) {

this.material.color.set( this.color );

} else {

const colors = mesh.geometry.getAttribute( 'color' );

_color1.copy( this.light.color );
			_color2.copy( this.light.groundColor );

for ( let i = 0, l = colors.count; i < l; i ++ ) {

const color = ( i < ( l / 2 ) ) ? _color1 : _color2;

colors.setXYZ( i, color.r, color.g, color.b );

}

colors.needsUpdate = true;

}

this.light.updateWorldMatrix( true, false );

mesh.lookAt( _vector$1.setFromMatrixPosition( this.light.matrixWorld ).negate() );

}

class GridHelper extends LineSegments {

constructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {

color1 = new Color( color1 );
		color2 = new Color( color2 );

const center = divisions / 2;
		const step = size / divisions;
		const halfSize = size / 2;

const vertices = [], colors = [];

for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {

vertices.push( - halfSize, 0, k, halfSize, 0, k );
			vertices.push( k, 0, - halfSize, k, 0, halfSize );

const color = i === center ? color1 : color2;

color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;
			color.toArray( colors, j ); j += 3;

}

const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

super( geometry, material );

this.type = 'GridHelper';

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

class PolarGridHelper extends LineSegments {

constructor( radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {

color1 = new Color( color1 );
		color2 = new Color( color2 );

const vertices = [];
		const colors = [];

// create the sectors

if ( sectors > 1 ) {

for ( let i = 0; i < sectors; i ++ ) {

const v = ( i / sectors ) * ( Math.PI * 2 );

const x = Math.sin( v ) * radius;
				const z = Math.cos( v ) * radius;

vertices.push( 0, 0, 0 );
				vertices.push( x, 0, z );

const color = ( i & 1 ) ? color1 : color2;

colors.push( color.r, color.g, color.b );
				colors.push( color.r, color.g, color.b );

}

// create the rings

for ( let i = 0; i < rings; i ++ ) {

const color = ( i & 1 ) ? color1 : color2;

const r = radius - ( radius / rings * i );

for ( let j = 0; j < divisions; j ++ ) {

// first vertex

let v = ( j / divisions ) * ( Math.PI * 2 );

let x = Math.sin( v ) * r;
				let z = Math.cos( v ) * r;

vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );

// second vertex

v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );

x = Math.sin( v ) * r;
				z = Math.cos( v ) * r;

vertices.push( x, 0, z );
				colors.push( color.r, color.g, color.b );

}

const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

super( geometry, material );

this.type = 'PolarGridHelper';

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

const _v1 = /*@__PURE__*/ new Vector3();
const _v2 = /*@__PURE__*/ new Vector3();
const _v3 = /*@__PURE__*/ new Vector3();

class DirectionalLightHelper extends Object3D {

constructor( light, size, color ) {

super();

this.light = light;

this.matrix = light.matrixWorld;
		this.matrixAutoUpdate = false;

this.color = color;

this.type = 'DirectionalLightHelper';

if ( size === undefined ) size = 1;

let geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [
			- size, size, 0,
			size, size, 0,
			size, - size, 0,
			- size, - size, 0,
			- size, size, 0
		], 3 ) );

const material = new LineBasicMaterial( { fog: false, toneMapped: false } );

this.lightPlane = new Line( geometry, material );
		this.add( this.lightPlane );

geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );

this.targetLine = new Line( geometry, material );
		this.add( this.targetLine );

this.update();

}

dispose() {

this.lightPlane.geometry.dispose();
		this.lightPlane.material.dispose();
		this.targetLine.geometry.dispose();
		this.targetLine.material.dispose();

}

update() {

this.light.updateWorldMatrix( true, false );
		this.light.target.updateWorldMatrix( true, false );

_v1.setFromMatrixPosition( this.light.matrixWorld );
		_v2.setFromMatrixPosition( this.light.target.matrixWorld );
		_v3.subVectors( _v2, _v1 );

this.lightPlane.lookAt( _v2 );

if ( this.color !== undefined ) {

this.lightPlane.material.color.set( this.color );
			this.targetLine.material.color.set( this.color );

} else {

this.lightPlane.material.color.copy( this.light.color );
			this.targetLine.material.color.copy( this.light.color );

}

this.targetLine.lookAt( _v2 );
		this.targetLine.scale.z = _v3.length();

}

const _vector = /*@__PURE__*/ new Vector3();
const _camera = /*@__PURE__*/ new Camera();

/**
 *	- shows frustum, line of sight and up of the camera
 *	- suitable for fast updates
 * 	- based on frustum visualization in lightgl.js shadowmap example
 *		https://github.com/evanw/lightgl.js/blob/master/tests/shadowmap.html
 */

class CameraHelper extends LineSegments {

constructor( camera ) {

const geometry = new BufferGeometry();
		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );

const vertices = [];
		const colors = [];

const pointMap = {};

// near

addLine( 'n1', 'n2' );
		addLine( 'n2', 'n4' );
		addLine( 'n4', 'n3' );
		addLine( 'n3', 'n1' );

// far

addLine( 'f1', 'f2' );
		addLine( 'f2', 'f4' );
		addLine( 'f4', 'f3' );
		addLine( 'f3', 'f1' );

// sides

addLine( 'n1', 'f1' );
		addLine( 'n2', 'f2' );
		addLine( 'n3', 'f3' );
		addLine( 'n4', 'f4' );

// cone

addLine( 'p', 'n1' );
		addLine( 'p', 'n2' );
		addLine( 'p', 'n3' );
		addLine( 'p', 'n4' );

// up

addLine( 'u1', 'u2' );
		addLine( 'u2', 'u3' );
		addLine( 'u3', 'u1' );

// target

addLine( 'c', 't' );
		addLine( 'p', 'c' );

// cross

addLine( 'cn1', 'cn2' );
		addLine( 'cn3', 'cn4' );

addLine( 'cf1', 'cf2' );
		addLine( 'cf3', 'cf4' );

function addLine( a, b ) {

addPoint( a );
			addPoint( b );

}

function addPoint( id ) {

vertices.push( 0, 0, 0 );
			colors.push( 0, 0, 0 );

if ( pointMap[ id ] === undefined ) {

pointMap[ id ] = [];

}

pointMap[ id ].push( ( vertices.length / 3 ) - 1 );

}

geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

super( geometry, material );

this.type = 'CameraHelper';

this.camera = camera;
		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();

this.matrix = camera.matrixWorld;
		this.matrixAutoUpdate = false;

this.pointMap = pointMap;

this.update();

// colors

const colorFrustum = new Color( 0xffaa00 );
		const colorCone = new Color( 0xff0000 );
		const colorUp = new Color( 0x00aaff );
		const colorTarget = new Color( 0xffffff );
		const colorCross = new Color( 0x333333 );

this.setColors( colorFrustum, colorCone, colorUp, colorTarget, colorCross );

}

setColors( frustum, cone, up, target, cross ) {

const geometry = this.geometry;

const colorAttribute = geometry.getAttribute( 'color' );

// near

colorAttribute.setXYZ( 0, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 1, frustum.r, frustum.g, frustum.b ); // n1, n2
		colorAttribute.setXYZ( 2, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 3, frustum.r, frustum.g, frustum.b ); // n2, n4
		colorAttribute.setXYZ( 4, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 5, frustum.r, frustum.g, frustum.b ); // n4, n3
		colorAttribute.setXYZ( 6, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 7, frustum.r, frustum.g, frustum.b ); // n3, n1

// far

colorAttribute.setXYZ( 8, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 9, frustum.r, frustum.g, frustum.b ); // f1, f2
		colorAttribute.setXYZ( 10, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 11, frustum.r, frustum.g, frustum.b ); // f2, f4
		colorAttribute.setXYZ( 12, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 13, frustum.r, frustum.g, frustum.b ); // f4, f3
		colorAttribute.setXYZ( 14, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 15, frustum.r, frustum.g, frustum.b ); // f3, f1

// sides

colorAttribute.setXYZ( 16, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 17, frustum.r, frustum.g, frustum.b ); // n1, f1
		colorAttribute.setXYZ( 18, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 19, frustum.r, frustum.g, frustum.b ); // n2, f2
		colorAttribute.setXYZ( 20, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 21, frustum.r, frustum.g, frustum.b ); // n3, f3
		colorAttribute.setXYZ( 22, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 23, frustum.r, frustum.g, frustum.b ); // n4, f4

// cone

colorAttribute.setXYZ( 24, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 25, cone.r, cone.g, cone.b ); // p, n1
		colorAttribute.setXYZ( 26, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 27, cone.r, cone.g, cone.b ); // p, n2
		colorAttribute.setXYZ( 28, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 29, cone.r, cone.g, cone.b ); // p, n3
		colorAttribute.setXYZ( 30, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 31, cone.r, cone.g, cone.b ); // p, n4

// up

colorAttribute.setXYZ( 32, up.r, up.g, up.b ); colorAttribute.setXYZ( 33, up.r, up.g, up.b ); // u1, u2
		colorAttribute.setXYZ( 34, up.r, up.g, up.b ); colorAttribute.setXYZ( 35, up.r, up.g, up.b ); // u2, u3
		colorAttribute.setXYZ( 36, up.r, up.g, up.b ); colorAttribute.setXYZ( 37, up.r, up.g, up.b ); // u3, u1

// target

colorAttribute.setXYZ( 38, target.r, target.g, target.b ); colorAttribute.setXYZ( 39, target.r, target.g, target.b ); // c, t
		colorAttribute.setXYZ( 40, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 41, cross.r, cross.g, cross.b ); // p, c

// cross

colorAttribute.setXYZ( 42, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 43, cross.r, cross.g, cross.b ); // cn1, cn2
		colorAttribute.setXYZ( 44, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 45, cross.r, cross.g, cross.b ); // cn3, cn4

colorAttribute.setXYZ( 46, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 47, cross.r, cross.g, cross.b ); // cf1, cf2
		colorAttribute.setXYZ( 48, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 49, cross.r, cross.g, cross.b ); // cf3, cf4

colorAttribute.needsUpdate = true;

}

update() {

const geometry = this.geometry;
		const pointMap = this.pointMap;

const w = 1, h = 1;

// we need just camera projection matrix inverse
		// world matrix must be identity

_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );

// center / target

setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );

// near

setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );

// far

setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );

// up

setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );

// cross

setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );

setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );

geometry.getAttribute( 'position' ).needsUpdate = true;

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

function setPoint( point, pointMap, geometry, camera, x, y, z ) {

_vector.set( x, y, z ).unproject( camera );

const points = pointMap[ point ];

if ( points !== undefined ) {

const position = geometry.getAttribute( 'position' );

for ( let i = 0, l = points.length; i < l; i ++ ) {

position.setXYZ( points[ i ], _vector.x, _vector.y, _vector.z );

}

const _box = /*@__PURE__*/ new Box3();

class BoxHelper extends LineSegments {

constructor( object, color = 0xffff00 ) {

const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
		const positions = new Float32Array( 8 * 3 );

const geometry = new BufferGeometry();
		geometry.setIndex( new BufferAttribute( indices, 1 ) );
		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );

super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

this.object = object;
		this.type = 'BoxHelper';

this.matrixAutoUpdate = false;

this.update();

}

update( object ) {

if ( object !== undefined ) {

console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );

}

if ( this.object !== undefined ) {

_box.setFromObject( this.object );

}

if ( _box.isEmpty() ) return;

const min = _box.min;
		const max = _box.max;

/*
			5____4
		1/___0/|
		| 6__|_7
		2/___3/

0: max.x, max.y, max.z
		1: min.x, max.y, max.z
		2: min.x, min.y, max.z
		3: max.x, min.y, max.z
		4: max.x, max.y, min.z
		5: min.x, max.y, min.z
		6: min.x, min.y, min.z
		7: max.x, min.y, min.z
		*/

const position = this.geometry.attributes.position;
		const array = position.array;

array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;

position.needsUpdate = true;

this.geometry.computeBoundingSphere();

}

setFromObject( object ) {

this.object = object;
		this.update();

return this;

}

copy( source, recursive ) {

super.copy( source, recursive );

this.object = source.object;

return this;

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

class Box3Helper extends LineSegments {

constructor( box, color = 0xffff00 ) {

const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );

const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];

const geometry = new BufferGeometry();

geometry.setIndex( new BufferAttribute( indices, 1 ) );

geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );

super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

this.box = box;

this.type = 'Box3Helper';

this.geometry.computeBoundingSphere();

}

updateMatrixWorld( force ) {

const box = this.box;

if ( box.isEmpty() ) return;

box.getCenter( this.position );

box.getSize( this.scale );

this.scale.multiplyScalar( 0.5 );

super.updateMatrixWorld( force );

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

class PlaneHelper extends Line {

constructor( plane, size = 1, hex = 0xffff00 ) {

const color = hex;

const positions = [ 1, - 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, - 1, 0, 1, 1, 0 ];

const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
		geometry.computeBoundingSphere();

super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );

this.type = 'PlaneHelper';

this.plane = plane;

this.size = size;

const positions2 = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, - 1, 0, 1, - 1, 0 ];

const geometry2 = new BufferGeometry();
		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
		geometry2.computeBoundingSphere();

this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );

}

updateMatrixWorld( force ) {

this.position.set( 0, 0, 0 );

this.scale.set( 0.5 * this.size, 0.5 * this.size, 1 );

this.lookAt( this.plane.normal );

this.translateZ( - this.plane.constant );

super.updateMatrixWorld( force );

}

dispose() {

this.geometry.dispose();
		this.material.dispose();
		this.children[ 0 ].geometry.dispose();
		this.children[ 0 ].material.dispose();

}

const _axis = /*@__PURE__*/ new Vector3();
let _lineGeometry, _coneGeometry;

class ArrowHelper extends Object3D {

// dir is assumed to be normalized

constructor( dir = new Vector3( 0, 0, 1 ), origin = new Vector3( 0, 0, 0 ), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

super();

this.type = 'ArrowHelper';

if ( _lineGeometry === undefined ) {

_lineGeometry = new BufferGeometry();
			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );

_coneGeometry = new CylinderGeometry( 0, 0.5, 1, 5, 1 );
			_coneGeometry.translate( 0, - 0.5, 0 );

}

this.position.copy( origin );

this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
		this.line.matrixAutoUpdate = false;
		this.add( this.line );

this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
		this.cone.matrixAutoUpdate = false;
		this.add( this.cone );

this.setDirection( dir );
		this.setLength( length, headLength, headWidth );

}

setDirection( dir ) {

// dir is assumed to be normalized

if ( dir.y > 0.99999 ) {

this.quaternion.set( 0, 0, 0, 1 );

} else if ( dir.y < - 0.99999 ) {

this.quaternion.set( 1, 0, 0, 0 );

} else {

_axis.set( dir.z, 0, - dir.x ).normalize();

const radians = Math.acos( dir.y );

this.quaternion.setFromAxisAngle( _axis, radians );

}

setLength( length, headLength = length * 0.2, headWidth = headLength * 0.2 ) {

this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458
		this.line.updateMatrix();

this.cone.scale.set( headWidth, headLength, headWidth );
		this.cone.position.y = length;
		this.cone.updateMatrix();

}

setColor( color ) {

this.line.material.color.set( color );
		this.cone.material.color.set( color );

}

copy( source ) {

super.copy( source, false );

this.line.copy( source.line );
		this.cone.copy( source.cone );

return this;

}

dispose() {

this.line.geometry.dispose();
		this.line.material.dispose();
		this.cone.geometry.dispose();
		this.cone.material.dispose();

}

class AxesHelper extends LineSegments {

constructor( size = 1 ) {

const vertices = [
			0, 0, 0,	size, 0, 0,
			0, 0, 0,	0, size, 0,
			0, 0, 0,	0, 0, size
		];

const colors = [
			1, 0, 0,	1, 0.6, 0,
			0, 1, 0,	0.6, 1, 0,
			0, 0, 1,	0, 0.6, 1
		];

const geometry = new BufferGeometry();
		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );

const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );

super( geometry, material );

this.type = 'AxesHelper';

}

setColors( xAxisColor, yAxisColor, zAxisColor ) {

const color = new Color();
		const array = this.geometry.attributes.color.array;

color.set( xAxisColor );
		color.toArray( array, 0 );
		color.toArray( array, 3 );

color.set( yAxisColor );
		color.toArray( array, 6 );
		color.toArray( array, 9 );

color.set( zAxisColor );
		color.toArray( array, 12 );
		color.toArray( array, 15 );

this.geometry.attributes.color.needsUpdate = true;

return this;

}

dispose() {

this.geometry.dispose();
		this.material.dispose();

}

class ShapePath {

constructor() {

this.type = 'ShapePath';

this.color = new Color();

this.subPaths = [];
		this.currentPath = null;

}

moveTo( x, y ) {

this.currentPath = new Path();
		this.subPaths.push( this.currentPath );
		this.currentPath.moveTo( x, y );

return this;

}

lineTo( x, y ) {

this.currentPath.lineTo( x, y );

return this;

}

quadraticCurveTo( aCPx, aCPy, aX, aY ) {

this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );

return this;

}

bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {

this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );

return this;

}

splineThru( pts ) {

this.currentPath.splineThru( pts );

return this;

}

toShapes( isCCW ) {

function toShapesNoHoles( inSubpaths ) {

const shapes = [];

for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {

const tmpPath = inSubpaths[ i ];

const tmpShape = new Shape();
				tmpShape.curves = tmpPath.curves;

shapes.push( tmpShape );

}

return shapes;

}

function isPointInsidePolygon( inPt, inPolygon ) {

const polyLen = inPolygon.length;

// inPt on polygon contour => immediate success    or
			// toggling of inside/outside at every single! intersection point of an edge
			//  with the horizontal line through inPt, left of inPt
			//  not counting lowerY endpoints of edges and whole edges on that line
			let inside = false;
			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {

let edgeLowPt = inPolygon[ p ];
				let edgeHighPt = inPolygon[ q ];

let edgeDx = edgeHighPt.x - edgeLowPt.x;
				let edgeDy = edgeHighPt.y - edgeLowPt.y;

if ( Math.abs( edgeDy ) > Number.EPSILON ) {

// not parallel
					if ( edgeDy < 0 ) {

edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;

}

if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;

if ( inPt.y === edgeLowPt.y ) {

if ( inPt.x === edgeLowPt.x )		return	true;		// inPt is on contour ?
						// continue;				// no intersection or edgeLowPt => doesn't count !!!

} else {

const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
						if ( perpEdge === 0 )				return	true;		// inPt is on contour ?
						if ( perpEdge < 0 ) 				continue;
						inside = ! inside;		// true intersection left of inPt

}

} else {

// parallel or collinear
					if ( inPt.y !== edgeLowPt.y ) 		continue;			// parallel
					// edge lies on the same horizontal line as inPt
					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;	// inPt: Point on contour !
					// continue;

}

return	inside;

}

const isClockWise = ShapeUtils.isClockWise;

const subPaths = this.subPaths;
		if ( subPaths.length === 0 ) return [];

let solid, tmpPath, tmpShape;
		const shapes = [];

if ( subPaths.length === 1 ) {

tmpPath = subPaths[ 0 ];
			tmpShape = new Shape();
			tmpShape.curves = tmpPath.curves;
			shapes.push( tmpShape );
			return shapes;

}

let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
		holesFirst = isCCW ? ! holesFirst : holesFirst;

// console.log("Holes first", holesFirst);

const betterShapeHoles = [];
		const newShapes = [];
		let newShapeHoles = [];
		let mainIdx = 0;
		let tmpPoints;

newShapes[ mainIdx ] = undefined;
		newShapeHoles[ mainIdx ] = [];

for ( let i = 0, l = subPaths.length; i < l; i ++ ) {

tmpPath = subPaths[ i ];
			tmpPoints = tmpPath.getPoints();
			solid = isClockWise( tmpPoints );
			solid = isCCW ? ! solid : solid;

if ( solid ) {

if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;

newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
				newShapes[ mainIdx ].s.curves = tmpPath.curves;

if ( holesFirst )	mainIdx ++;
				newShapeHoles[ mainIdx ] = [];

//console.log('cw', i);

} else {

newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );

//console.log('ccw', i);

}

// only Holes? -> probably all Shapes with wrong orientation
		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );

if ( newShapes.length > 1 ) {

let ambiguous = false;
			let toChange = 0;

for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

betterShapeHoles[ sIdx ] = [];

}

for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {

const sho = newShapeHoles[ sIdx ];

for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {

const ho = sho[ hIdx ];
					let hole_unassigned = true;

for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {

if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {

if ( sIdx !== s2Idx )	toChange ++;

if ( hole_unassigned ) {

hole_unassigned = false;
								betterShapeHoles[ s2Idx ].push( ho );

} else {

ambiguous = true;

}

if ( hole_unassigned ) {

betterShapeHoles[ sIdx ].push( ho );

}

if ( toChange > 0 && ambiguous === false ) {

newShapeHoles = betterShapeHoles;

}

let tmpHoles;

for ( let i = 0, il = newShapes.length; i < il; i ++ ) {

tmpShape = newShapes[ i ].s;
			shapes.push( tmpShape );
			tmpHoles = newShapeHoles[ i ];

for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {

tmpShape.holes.push( tmpHoles[ j ].h );

}

//console.log("shape", shapes);

return shapes;

}

class BoxBufferGeometry extends BoxGeometry { // @deprecated, r144

constructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {

console.warn( 'THREE.BoxBufferGeometry has been renamed to THREE.BoxGeometry.' );
		super( width, height, depth, widthSegments, heightSegments, depthSegments );

}

class CapsuleBufferGeometry extends CapsuleGeometry { // @deprecated, r144

constructor( radius, length, capSegments, radialSegments ) {

console.warn( 'THREE.CapsuleBufferGeometry has been renamed to THREE.CapsuleGeometry.' );
		super( radius, length, capSegments, radialSegments );

}

class CircleBufferGeometry extends CircleGeometry { // @deprecated, r144

constructor( radius, segments, thetaStart, thetaLength ) {

console.warn( 'THREE.CircleBufferGeometry has been renamed to THREE.CircleGeometry.' );
		super( radius, segments, thetaStart, thetaLength );

}

class ConeBufferGeometry extends ConeGeometry { // @deprecated, r144

constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {

console.warn( 'THREE.ConeBufferGeometry has been renamed to THREE.ConeGeometry.' );
		super( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

}

class CylinderBufferGeometry extends CylinderGeometry { // @deprecated, r144

constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {

console.warn( 'THREE.CylinderBufferGeometry has been renamed to THREE.CylinderGeometry.' );
		super( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );

}

class DodecahedronBufferGeometry extends DodecahedronGeometry { // @deprecated, r144

constructor( radius, detail ) {

console.warn( 'THREE.DodecahedronBufferGeometry has been renamed to THREE.DodecahedronGeometry.' );
		super( radius, detail );

}

class ExtrudeBufferGeometry extends ExtrudeGeometry { // @deprecated, r144

constructor( shapes, options ) {

console.warn( 'THREE.ExtrudeBufferGeometry has been renamed to THREE.ExtrudeGeometry.' );
		super( shapes, options );

}

class IcosahedronBufferGeometry extends IcosahedronGeometry { // @deprecated, r144

constructor( radius, detail ) {

console.warn( 'THREE.IcosahedronBufferGeometry has been renamed to THREE.IcosahedronGeometry.' );
		super( radius, detail );

}

class LatheBufferGeometry extends LatheGeometry { // @deprecated, r144

constructor( points, segments, phiStart, phiLength ) {

console.warn( 'THREE.LatheBufferGeometry has been renamed to THREE.LatheGeometry.' );
		super( points, segments, phiStart, phiLength );

}

class OctahedronBufferGeometry extends OctahedronGeometry { // @deprecated, r144

constructor( radius, detail ) {

console.warn( 'THREE.OctahedronBufferGeometry has been renamed to THREE.OctahedronGeometry.' );
		super( radius, detail );

}

class PlaneBufferGeometry extends PlaneGeometry { // @deprecated, r144

constructor( width, height, widthSegments, heightSegments ) {

console.warn( 'THREE.PlaneBufferGeometry has been renamed to THREE.PlaneGeometry.' );
		super( width, height, widthSegments, heightSegments );

}

class PolyhedronBufferGeometry extends PolyhedronGeometry { // @deprecated, r144

constructor( vertices, indices, radius, detail ) {

console.warn( 'THREE.PolyhedronBufferGeometry has been renamed to THREE.PolyhedronGeometry.' );
		super( vertices, indices, radius, detail );

}

class RingBufferGeometry extends RingGeometry { // @deprecated, r144

constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {

console.warn( 'THREE.RingBufferGeometry has been renamed to THREE.RingGeometry.' );
		super( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength );

}

class ShapeBufferGeometry extends ShapeGeometry { // @deprecated, r144

constructor( shapes, curveSegments ) {

console.warn( 'THREE.ShapeBufferGeometry has been renamed to THREE.ShapeGeometry.' );
		super( shapes, curveSegments );

}

class SphereBufferGeometry extends SphereGeometry { // @deprecated, r144

constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {

console.warn( 'THREE.SphereBufferGeometry has been renamed to THREE.SphereGeometry.' );
		super( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength );

}

class TetrahedronBufferGeometry extends TetrahedronGeometry { // @deprecated, r144

constructor( radius, detail ) {

console.warn( 'THREE.TetrahedronBufferGeometry has been renamed to THREE.TetrahedronGeometry.' );
		super( radius, detail );

}

class TorusBufferGeometry extends TorusGeometry { // @deprecated, r144

constructor( radius, tube, radialSegments, tubularSegments, arc ) {

console.warn( 'THREE.TorusBufferGeometry has been renamed to THREE.TorusGeometry.' );
		super( radius, tube, radialSegments, tubularSegments, arc );

}

class TorusKnotBufferGeometry extends TorusKnotGeometry { // @deprecated, r144

constructor( radius, tube, tubularSegments, radialSegments, p, q ) {

console.warn( 'THREE.TorusKnotBufferGeometry has been renamed to THREE.TorusKnotGeometry.' );
		super( radius, tube, tubularSegments, radialSegments, p, q );

}

class TubeBufferGeometry extends TubeGeometry { // @deprecated, r144

constructor( path, tubularSegments, radius, radialSegments, closed ) {

console.warn( 'THREE.TubeBufferGeometry has been renamed to THREE.TubeGeometry.' );
		super( path, tubularSegments, radius, radialSegments, closed );

}

if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
		revision: REVISION,
	} } ) );

}

if ( typeof window !== 'undefined' ) {

if ( window.__THREE__ ) {

console.warn( 'WARNING: Multiple instances of Three.js being imported.' );

} else {

window.__THREE__ = REVISION;

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/controls/OrbitControls.js":
/*!*******************************************************************!*\
  !*** ./node_modules/three/examples/jsm/controls/OrbitControls.js ***!
  \*******************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "OrbitControls": () => (/* binding */ OrbitControls)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");

// OrbitControls performs orbiting, dollying (zooming), and panning.
// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
//
//    Orbit - left mouse / touch: one-finger move
//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
//    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move

const _changeEvent = { type: 'change' };
const _startEvent = { type: 'start' };
const _endEvent = { type: 'end' };

class OrbitControls extends three__WEBPACK_IMPORTED_MODULE_0__.EventDispatcher {

constructor( object, domElement ) {

super();

this.object = object;
		this.domElement = domElement;
		this.domElement.style.touchAction = 'none'; // disable touch scroll

// Set to false to disable this control
		this.enabled = true;

// "target" sets the location of focus, where the object orbits around
		this.target = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

// How far you can dolly in and out ( PerspectiveCamera only )
		this.minDistance = 0;
		this.maxDistance = Infinity;

// How far you can zoom in and out ( OrthographicCamera only )
		this.minZoom = 0;
		this.maxZoom = Infinity;

// How far you can orbit vertically, upper and lower limits.
		// Range is 0 to Math.PI radians.
		this.minPolarAngle = 0; // radians
		this.maxPolarAngle = Math.PI; // radians

// How far you can orbit horizontally, upper and lower limits.
		// If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )
		this.minAzimuthAngle = - Infinity; // radians
		this.maxAzimuthAngle = Infinity; // radians

// Set to true to enable damping (inertia)
		// If damping is enabled, you must call controls.update() in your animation loop
		this.enableDamping = false;
		this.dampingFactor = 0.05;

// This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
		// Set to false to disable zooming
		this.enableZoom = true;
		this.zoomSpeed = 1.0;

// Set to false to disable rotating
		this.enableRotate = true;
		this.rotateSpeed = 1.0;

// Set to false to disable panning
		this.enablePan = true;
		this.panSpeed = 1.0;
		this.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up
		this.keyPanSpeed = 7.0;	// pixels moved per arrow key push

// Set to true to automatically rotate around the target
		// If auto-rotate is enabled, you must call controls.update() in your animation loop
		this.autoRotate = false;
		this.autoRotateSpeed = 2.0; // 30 seconds per orbit when fps is 60

// The four arrow keys
		this.keys = { LEFT: 'ArrowLeft', UP: 'ArrowUp', RIGHT: 'ArrowRight', BOTTOM: 'ArrowDown' };

// Mouse buttons
		this.mouseButtons = { LEFT: three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.ROTATE, MIDDLE: three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.DOLLY, RIGHT: three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.PAN };

// Touch fingers
		this.touches = { ONE: three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.ROTATE, TWO: three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.DOLLY_PAN };

// for reset
		this.target0 = this.target.clone();
		this.position0 = this.object.position.clone();
		this.zoom0 = this.object.zoom;

// the target DOM element for key events
		this._domElementKeyEvents = null;

//
		// public methods
		//

this.getPolarAngle = function () {

return spherical.phi;

};

this.getAzimuthalAngle = function () {

return spherical.theta;

};

this.getDistance = function () {

return this.object.position.distanceTo( this.target );

};

this.listenToKeyEvents = function ( domElement ) {

domElement.addEventListener( 'keydown', onKeyDown );
			this._domElementKeyEvents = domElement;

};

this.stopListenToKeyEvents = function () {

this._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown );
			this._domElementKeyEvents = null;

};

this.saveState = function () {

scope.target0.copy( scope.target );
			scope.position0.copy( scope.object.position );
			scope.zoom0 = scope.object.zoom;

};

this.reset = function () {

scope.target.copy( scope.target0 );
			scope.object.position.copy( scope.position0 );
			scope.object.zoom = scope.zoom0;

scope.object.updateProjectionMatrix();
			scope.dispatchEvent( _changeEvent );

scope.update();

state = STATE.NONE;

};

// this method is exposed, but perhaps it would be better if we can make it private...
		this.update = function () {

const offset = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

// so camera.up is the orbit axis
			const quat = new three__WEBPACK_IMPORTED_MODULE_0__.Quaternion().setFromUnitVectors( object.up, new three__WEBPACK_IMPORTED_MODULE_0__.Vector3( 0, 1, 0 ) );
			const quatInverse = quat.clone().invert();

const lastPosition = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
			const lastQuaternion = new three__WEBPACK_IMPORTED_MODULE_0__.Quaternion();

const twoPI = 2 * Math.PI;

return function update() {

const position = scope.object.position;

offset.copy( position ).sub( scope.target );

// rotate offset to "y-axis-is-up" space
				offset.applyQuaternion( quat );

// angle from z-axis around y-axis
				spherical.setFromVector3( offset );

if ( scope.autoRotate && state === STATE.NONE ) {

rotateLeft( getAutoRotationAngle() );

}

if ( scope.enableDamping ) {

spherical.theta += sphericalDelta.theta * scope.dampingFactor;
					spherical.phi += sphericalDelta.phi * scope.dampingFactor;

} else {

spherical.theta += sphericalDelta.theta;
					spherical.phi += sphericalDelta.phi;

}

// restrict theta to be between desired limits

let min = scope.minAzimuthAngle;
				let max = scope.maxAzimuthAngle;

if ( isFinite( min ) && isFinite( max ) ) {

if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;

if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;

if ( min <= max ) {

spherical.theta = Math.max( min, Math.min( max, spherical.theta ) );

} else {

spherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?
							Math.max( min, spherical.theta ) :
							Math.min( max, spherical.theta );

}

// restrict phi to be between desired limits
				spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );

spherical.makeSafe();

spherical.radius *= scale;

// restrict radius to be between desired limits
				spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );

// move target to panned location

if ( scope.enableDamping === true ) {

scope.target.addScaledVector( panOffset, scope.dampingFactor );

} else {

scope.target.add( panOffset );

}

offset.setFromSpherical( spherical );

// rotate offset back to "camera-up-vector-is-up" space
				offset.applyQuaternion( quatInverse );

position.copy( scope.target ).add( offset );

scope.object.lookAt( scope.target );

if ( scope.enableDamping === true ) {

sphericalDelta.theta *= ( 1 - scope.dampingFactor );
					sphericalDelta.phi *= ( 1 - scope.dampingFactor );

panOffset.multiplyScalar( 1 - scope.dampingFactor );

} else {

sphericalDelta.set( 0, 0, 0 );

panOffset.set( 0, 0, 0 );

}

scale = 1;

// update condition is:
				// min(camera displacement, camera rotation in radians)^2 > EPS
				// using small-angle approximation cos(x/2) = 1 - x^2 / 8

if ( zoomChanged ||
					lastPosition.distanceToSquared( scope.object.position ) > EPS ||
					8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {

scope.dispatchEvent( _changeEvent );

lastPosition.copy( scope.object.position );
					lastQuaternion.copy( scope.object.quaternion );
					zoomChanged = false;

return true;

}

return false;

};

}();

this.dispose = function () {

scope.domElement.removeEventListener( 'contextmenu', onContextMenu );

scope.domElement.removeEventListener( 'pointerdown', onPointerDown );
			scope.domElement.removeEventListener( 'pointercancel', onPointerUp );
			scope.domElement.removeEventListener( 'wheel', onMouseWheel );

scope.domElement.removeEventListener( 'pointermove', onPointerMove );
			scope.domElement.removeEventListener( 'pointerup', onPointerUp );

if ( scope._domElementKeyEvents !== null ) {

scope._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown );
				scope._domElementKeyEvents = null;

}

//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?

};

//
		// internals
		//

const scope = this;

const STATE = {
			NONE: - 1,
			ROTATE: 0,
			DOLLY: 1,
			PAN: 2,
			TOUCH_ROTATE: 3,
			TOUCH_PAN: 4,
			TOUCH_DOLLY_PAN: 5,
			TOUCH_DOLLY_ROTATE: 6
		};

let state = STATE.NONE;

const EPS = 0.000001;

// current position in spherical coordinates
		const spherical = new three__WEBPACK_IMPORTED_MODULE_0__.Spherical();
		const sphericalDelta = new three__WEBPACK_IMPORTED_MODULE_0__.Spherical();

let scale = 1;
		const panOffset = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
		let zoomChanged = false;

const rotateStart = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const rotateEnd = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const rotateDelta = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();

const panStart = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const panEnd = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const panDelta = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();

const dollyStart = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const dollyEnd = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
		const dollyDelta = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();

const pointers = [];
		const pointerPositions = {};

function getAutoRotationAngle() {

return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;

}

function getZoomScale() {

return Math.pow( 0.95, scope.zoomSpeed );

}

function rotateLeft( angle ) {

sphericalDelta.theta -= angle;

}

function rotateUp( angle ) {

sphericalDelta.phi -= angle;

}

const panLeft = function () {

const v = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

return function panLeft( distance, objectMatrix ) {

v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
				v.multiplyScalar( - distance );

panOffset.add( v );

};

}();

const panUp = function () {

const v = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

return function panUp( distance, objectMatrix ) {

if ( scope.screenSpacePanning === true ) {

v.setFromMatrixColumn( objectMatrix, 1 );

} else {

v.setFromMatrixColumn( objectMatrix, 0 );
					v.crossVectors( scope.object.up, v );

}

v.multiplyScalar( distance );

panOffset.add( v );

};

}();

// deltaX and deltaY are in pixels; right and down are positive
		const pan = function () {

const offset = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

return function pan( deltaX, deltaY ) {

const element = scope.domElement;

if ( scope.object.isPerspectiveCamera ) {

// perspective
					const position = scope.object.position;
					offset.copy( position ).sub( scope.target );
					let targetDistance = offset.length();

// half of the fov is center to top of screen
					targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );

// we use only clientHeight here so aspect ratio does not distort speed
					panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
					panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );

} else if ( scope.object.isOrthographicCamera ) {

// orthographic
					panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
					panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );

} else {

// camera neither orthographic nor perspective
					console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
					scope.enablePan = false;

}

};

}();

function dollyOut( dollyScale ) {

if ( scope.object.isPerspectiveCamera ) {

scale /= dollyScale;

} else if ( scope.object.isOrthographicCamera ) {

scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
				scope.object.updateProjectionMatrix();
				zoomChanged = true;

} else {

console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
				scope.enableZoom = false;

}

function dollyIn( dollyScale ) {

if ( scope.object.isPerspectiveCamera ) {

scale *= dollyScale;

} else if ( scope.object.isOrthographicCamera ) {

scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
				scope.object.updateProjectionMatrix();
				zoomChanged = true;

} else {

console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
				scope.enableZoom = false;

}

//
		// event callbacks - update the object state
		//

function handleMouseDownRotate( event ) {

rotateStart.set( event.clientX, event.clientY );

}

function handleMouseDownDolly( event ) {

dollyStart.set( event.clientX, event.clientY );

}

function handleMouseDownPan( event ) {

panStart.set( event.clientX, event.clientY );

}

function handleMouseMoveRotate( event ) {

rotateEnd.set( event.clientX, event.clientY );

rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );

const element = scope.domElement;

rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height

rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );

rotateStart.copy( rotateEnd );

scope.update();

}

function handleMouseMoveDolly( event ) {

dollyEnd.set( event.clientX, event.clientY );

dollyDelta.subVectors( dollyEnd, dollyStart );

if ( dollyDelta.y > 0 ) {

dollyOut( getZoomScale() );

} else if ( dollyDelta.y < 0 ) {

dollyIn( getZoomScale() );

}

dollyStart.copy( dollyEnd );

scope.update();

}

function handleMouseMovePan( event ) {

panEnd.set( event.clientX, event.clientY );

panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );

pan( panDelta.x, panDelta.y );

panStart.copy( panEnd );

scope.update();

}

function handleMouseWheel( event ) {

if ( event.deltaY < 0 ) {

dollyIn( getZoomScale() );

} else if ( event.deltaY > 0 ) {

dollyOut( getZoomScale() );

}

scope.update();

}

function handleKeyDown( event ) {

let needsUpdate = false;

switch ( event.code ) {

case scope.keys.UP:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

rotateUp( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );

} else {

pan( 0, scope.keyPanSpeed );

}

needsUpdate = true;
					break;

case scope.keys.BOTTOM:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

rotateUp( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );

} else {

pan( 0, - scope.keyPanSpeed );

}

needsUpdate = true;
					break;

case scope.keys.LEFT:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

rotateLeft( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );

} else {

pan( scope.keyPanSpeed, 0 );

}

needsUpdate = true;
					break;

case scope.keys.RIGHT:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

rotateLeft( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );

} else {

pan( - scope.keyPanSpeed, 0 );

}

needsUpdate = true;
					break;

}

if ( needsUpdate ) {

// prevent the browser from scrolling on cursor keys
				event.preventDefault();

scope.update();

}

function handleTouchStartRotate() {

if ( pointers.length === 1 ) {

rotateStart.set( pointers[ 0 ].pageX, pointers[ 0 ].pageY );

} else {

const x = 0.5 * ( pointers[ 0 ].pageX + pointers[ 1 ].pageX );
				const y = 0.5 * ( pointers[ 0 ].pageY + pointers[ 1 ].pageY );

rotateStart.set( x, y );

}

function handleTouchStartPan() {

if ( pointers.length === 1 ) {

panStart.set( pointers[ 0 ].pageX, pointers[ 0 ].pageY );

} else {

const x = 0.5 * ( pointers[ 0 ].pageX + pointers[ 1 ].pageX );
				const y = 0.5 * ( pointers[ 0 ].pageY + pointers[ 1 ].pageY );

panStart.set( x, y );

}

function handleTouchStartDolly() {

const dx = pointers[ 0 ].pageX - pointers[ 1 ].pageX;
			const dy = pointers[ 0 ].pageY - pointers[ 1 ].pageY;

const distance = Math.sqrt( dx * dx + dy * dy );

dollyStart.set( 0, distance );

}

function handleTouchStartDollyPan() {

if ( scope.enableZoom ) handleTouchStartDolly();

if ( scope.enablePan ) handleTouchStartPan();

}

function handleTouchStartDollyRotate() {

if ( scope.enableZoom ) handleTouchStartDolly();

if ( scope.enableRotate ) handleTouchStartRotate();

}

function handleTouchMoveRotate( event ) {

if ( pointers.length == 1 ) {

rotateEnd.set( event.pageX, event.pageY );

} else {

const position = getSecondPointerPosition( event );

const x = 0.5 * ( event.pageX + position.x );
				const y = 0.5 * ( event.pageY + position.y );

rotateEnd.set( x, y );

}

rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );

const element = scope.domElement;

rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height

rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );

rotateStart.copy( rotateEnd );

}

function handleTouchMovePan( event ) {

if ( pointers.length === 1 ) {

panEnd.set( event.pageX, event.pageY );

} else {

const position = getSecondPointerPosition( event );

const x = 0.5 * ( event.pageX + position.x );
				const y = 0.5 * ( event.pageY + position.y );

panEnd.set( x, y );

}

panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );

pan( panDelta.x, panDelta.y );

panStart.copy( panEnd );

}

function handleTouchMoveDolly( event ) {

const position = getSecondPointerPosition( event );

const dx = event.pageX - position.x;
			const dy = event.pageY - position.y;

const distance = Math.sqrt( dx * dx + dy * dy );

dollyEnd.set( 0, distance );

dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );

dollyOut( dollyDelta.y );

dollyStart.copy( dollyEnd );

}

function handleTouchMoveDollyPan( event ) {

if ( scope.enableZoom ) handleTouchMoveDolly( event );

if ( scope.enablePan ) handleTouchMovePan( event );

}

function handleTouchMoveDollyRotate( event ) {

if ( scope.enableZoom ) handleTouchMoveDolly( event );

if ( scope.enableRotate ) handleTouchMoveRotate( event );

}

//
		// event handlers - FSM: listen for events and reset state
		//

function onPointerDown( event ) {

if ( scope.enabled === false ) return;

if ( pointers.length === 0 ) {

scope.domElement.setPointerCapture( event.pointerId );

scope.domElement.addEventListener( 'pointermove', onPointerMove );
				scope.domElement.addEventListener( 'pointerup', onPointerUp );

}

addPointer( event );

if ( event.pointerType === 'touch' ) {

onTouchStart( event );

} else {

onMouseDown( event );

}

function onPointerMove( event ) {

if ( scope.enabled === false ) return;

if ( event.pointerType === 'touch' ) {

onTouchMove( event );

} else {

onMouseMove( event );

}

function onPointerUp( event ) {

removePointer( event );

if ( pointers.length === 0 ) {

scope.domElement.releasePointerCapture( event.pointerId );

scope.domElement.removeEventListener( 'pointermove', onPointerMove );
				scope.domElement.removeEventListener( 'pointerup', onPointerUp );

}

scope.dispatchEvent( _endEvent );

state = STATE.NONE;

}

function onMouseDown( event ) {

let mouseAction;

switch ( event.button ) {

case 0:

mouseAction = scope.mouseButtons.LEFT;
					break;

case 1:

mouseAction = scope.mouseButtons.MIDDLE;
					break;

case 2:

mouseAction = scope.mouseButtons.RIGHT;
					break;

default:

mouseAction = - 1;

}

switch ( mouseAction ) {

case three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.DOLLY:

if ( scope.enableZoom === false ) return;

handleMouseDownDolly( event );

state = STATE.DOLLY;

break;

case three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.ROTATE:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

if ( scope.enablePan === false ) return;

handleMouseDownPan( event );

state = STATE.PAN;

} else {

if ( scope.enableRotate === false ) return;

handleMouseDownRotate( event );

state = STATE.ROTATE;

}

break;

case three__WEBPACK_IMPORTED_MODULE_0__.MOUSE.PAN:

if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

if ( scope.enableRotate === false ) return;

handleMouseDownRotate( event );

state = STATE.ROTATE;

} else {

if ( scope.enablePan === false ) return;

handleMouseDownPan( event );

state = STATE.PAN;

}

break;

default:

state = STATE.NONE;

}

if ( state !== STATE.NONE ) {

scope.dispatchEvent( _startEvent );

}

function onMouseMove( event ) {

switch ( state ) {

case STATE.ROTATE:

if ( scope.enableRotate === false ) return;

handleMouseMoveRotate( event );

break;

case STATE.DOLLY:

if ( scope.enableZoom === false ) return;

handleMouseMoveDolly( event );

break;

case STATE.PAN:

if ( scope.enablePan === false ) return;

handleMouseMovePan( event );

break;

}

function onMouseWheel( event ) {

if ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return;

event.preventDefault();

scope.dispatchEvent( _startEvent );

handleMouseWheel( event );

scope.dispatchEvent( _endEvent );

}

function onKeyDown( event ) {

if ( scope.enabled === false || scope.enablePan === false ) return;

handleKeyDown( event );

}

function onTouchStart( event ) {

trackPointer( event );

switch ( pointers.length ) {

case 1:

switch ( scope.touches.ONE ) {

case three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.ROTATE:

if ( scope.enableRotate === false ) return;

handleTouchStartRotate();

state = STATE.TOUCH_ROTATE;

break;

case three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.PAN:

if ( scope.enablePan === false ) return;

handleTouchStartPan();

state = STATE.TOUCH_PAN;

break;

default:

state = STATE.NONE;

}

break;

case 2:

switch ( scope.touches.TWO ) {

case three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.DOLLY_PAN:

if ( scope.enableZoom === false && scope.enablePan === false ) return;

handleTouchStartDollyPan();

state = STATE.TOUCH_DOLLY_PAN;

break;

case three__WEBPACK_IMPORTED_MODULE_0__.TOUCH.DOLLY_ROTATE:

if ( scope.enableZoom === false && scope.enableRotate === false ) return;

handleTouchStartDollyRotate();

state = STATE.TOUCH_DOLLY_ROTATE;

break;

default:

state = STATE.NONE;

}

break;

default:

state = STATE.NONE;

}

if ( state !== STATE.NONE ) {

scope.dispatchEvent( _startEvent );

}

function onTouchMove( event ) {

trackPointer( event );

switch ( state ) {

case STATE.TOUCH_ROTATE:

if ( scope.enableRotate === false ) return;

handleTouchMoveRotate( event );

scope.update();

break;

case STATE.TOUCH_PAN:

if ( scope.enablePan === false ) return;

handleTouchMovePan( event );

scope.update();

break;

case STATE.TOUCH_DOLLY_PAN:

if ( scope.enableZoom === false && scope.enablePan === false ) return;

handleTouchMoveDollyPan( event );

scope.update();

break;

case STATE.TOUCH_DOLLY_ROTATE:

if ( scope.enableZoom === false && scope.enableRotate === false ) return;

handleTouchMoveDollyRotate( event );

scope.update();

break;

default:

state = STATE.NONE;

}

function onContextMenu( event ) {

if ( scope.enabled === false ) return;

event.preventDefault();

}

function addPointer( event ) {

pointers.push( event );

}

function removePointer( event ) {

delete pointerPositions[ event.pointerId ];

for ( let i = 0; i < pointers.length; i ++ ) {

if ( pointers[ i ].pointerId == event.pointerId ) {

pointers.splice( i, 1 );
					return;

}

function trackPointer( event ) {

let position = pointerPositions[ event.pointerId ];

if ( position === undefined ) {

position = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2();
				pointerPositions[ event.pointerId ] = position;

}

position.set( event.pageX, event.pageY );

}

function getSecondPointerPosition( event ) {

const pointer = ( event.pointerId === pointers[ 0 ].pointerId ) ? pointers[ 1 ] : pointers[ 0 ];

return pointerPositions[ pointer.pointerId ];

}

scope.domElement.addEventListener( 'contextmenu', onContextMenu );

scope.domElement.addEventListener( 'pointerdown', onPointerDown );
		scope.domElement.addEventListener( 'pointercancel', onPointerUp );
		scope.domElement.addEventListener( 'wheel', onMouseWheel, { passive: false } );

// force an update at start

this.update();

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/loaders/GLTFLoader.js":
/*!***************************************************************!*\
  !*** ./node_modules/three/examples/jsm/loaders/GLTFLoader.js ***!
  \***************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "GLTFLoader": () => (/* binding */ GLTFLoader)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var _utils_BufferGeometryUtils_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ../utils/BufferGeometryUtils.js */ "./node_modules/three/examples/jsm/utils/BufferGeometryUtils.js");

class GLTFLoader extends three__WEBPACK_IMPORTED_MODULE_0__.Loader {

constructor( manager ) {

super( manager );

this.dracoLoader = null;
		this.ktx2Loader = null;
		this.meshoptDecoder = null;

this.pluginCallbacks = [];

this.register( function ( parser ) {

return new GLTFMaterialsClearcoatExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFTextureBasisUExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFTextureWebPExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFTextureAVIFExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsSheenExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsTransmissionExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsVolumeExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsIorExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsEmissiveStrengthExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsSpecularExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMaterialsIridescenceExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFLightsExtension( parser );

} );

this.register( function ( parser ) {

return new GLTFMeshoptCompression( parser );

} );

this.register( function ( parser ) {

return new GLTFMeshGpuInstancing( parser );

} );

}

load( url, onLoad, onProgress, onError ) {

const scope = this;

let resourcePath;

if ( this.resourcePath !== '' ) {

resourcePath = this.resourcePath;

} else if ( this.path !== '' ) {

resourcePath = this.path;

} else {

resourcePath = three__WEBPACK_IMPORTED_MODULE_0__.LoaderUtils.extractUrlBase( url );

}

// Tells the LoadingManager to track an extra item, which resolves after
		// the model is fully loaded. This means the count of items loaded will
		// be incorrect, but ensures manager.onLoad() does not fire early.
		this.manager.itemStart( url );

const _onError = function ( e ) {

if ( onError ) {

onError( e );

} else {

console.error( e );

}

scope.manager.itemError( url );
			scope.manager.itemEnd( url );

};

const loader = new three__WEBPACK_IMPORTED_MODULE_0__.FileLoader( this.manager );

loader.setPath( this.path );
		loader.setResponseType( 'arraybuffer' );
		loader.setRequestHeader( this.requestHeader );
		loader.setWithCredentials( this.withCredentials );

loader.load( url, function ( data ) {

try {

scope.parse( data, resourcePath, function ( gltf ) {

onLoad( gltf );

scope.manager.itemEnd( url );

}, _onError );

} catch ( e ) {

_onError( e );

}

}, onProgress, _onError );

}

setDRACOLoader( dracoLoader ) {

this.dracoLoader = dracoLoader;
		return this;

}

setDDSLoader() {

throw new Error(

'THREE.GLTFLoader: "MSFT_texture_dds" no longer supported. Please update to "KHR_texture_basisu".'

);

}

setKTX2Loader( ktx2Loader ) {

this.ktx2Loader = ktx2Loader;
		return this;

}

setMeshoptDecoder( meshoptDecoder ) {

this.meshoptDecoder = meshoptDecoder;
		return this;

}

if ( this.pluginCallbacks.indexOf( callback ) === - 1 ) {

this.pluginCallbacks.push( callback );

}

return this;

}

unregister( callback ) {

if ( this.pluginCallbacks.indexOf( callback ) !== - 1 ) {

this.pluginCallbacks.splice( this.pluginCallbacks.indexOf( callback ), 1 );

}

return this;

}

parse( data, path, onLoad, onError ) {

let json;
		const extensions = {};
		const plugins = {};
		const textDecoder = new TextDecoder();

if ( typeof data === 'string' ) {

json = JSON.parse( data );

} else if ( data instanceof ArrayBuffer ) {

const magic = textDecoder.decode( new Uint8Array( data, 0, 4 ) );

if ( magic === BINARY_EXTENSION_HEADER_MAGIC ) {

try {

extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );

} catch ( error ) {

if ( onError ) onError( error );
					return;

}

json = JSON.parse( extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content );

} else {

json = JSON.parse( textDecoder.decode( data ) );

}

} else {

json = data;

}

if ( json.asset === undefined || json.asset.version[ 0 ] < 2 ) {

if ( onError ) onError( new Error( 'THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.' ) );
			return;

}

const parser = new GLTFParser( json, {

path: path || this.resourcePath || '',
			crossOrigin: this.crossOrigin,
			requestHeader: this.requestHeader,
			manager: this.manager,
			ktx2Loader: this.ktx2Loader,
			meshoptDecoder: this.meshoptDecoder

} );

parser.fileLoader.setRequestHeader( this.requestHeader );

for ( let i = 0; i < this.pluginCallbacks.length; i ++ ) {

const plugin = this.pluginCallbacks[ i ]( parser );
			plugins[ plugin.name ] = plugin;

// Workaround to avoid determining as unknown extension
			// in addUnknownExtensionsToUserData().
			// Remove this workaround if we move all the existing
			// extension handlers to plugin system
			extensions[ plugin.name ] = true;

}

if ( json.extensionsUsed ) {

for ( let i = 0; i < json.extensionsUsed.length; ++ i ) {

const extensionName = json.extensionsUsed[ i ];
				const extensionsRequired = json.extensionsRequired || [];

switch ( extensionName ) {

case EXTENSIONS.KHR_MATERIALS_UNLIT:
						extensions[ extensionName ] = new GLTFMaterialsUnlitExtension();
						break;

case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
						extensions[ extensionName ] = new GLTFDracoMeshCompressionExtension( json, this.dracoLoader );
						break;

case EXTENSIONS.KHR_TEXTURE_TRANSFORM:
						extensions[ extensionName ] = new GLTFTextureTransformExtension();
						break;

case EXTENSIONS.KHR_MESH_QUANTIZATION:
						extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
						break;

default:

if ( extensionsRequired.indexOf( extensionName ) >= 0 && plugins[ extensionName ] === undefined ) {

console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );

}

parser.setExtensions( extensions );
		parser.setPlugins( plugins );
		parser.parse( onLoad, onError );

}

parseAsync( data, path ) {

const scope = this;

return new Promise( function ( resolve, reject ) {

scope.parse( data, path, resolve, reject );

} );

}

/* GLTFREGISTRY */

function GLTFRegistry() {

let objects = {};

return	{

get: function ( key ) {

return objects[ key ];

add: function ( key, object ) {

objects[ key ] = object;

remove: function ( key ) {

delete objects[ key ];

removeAll: function () {

objects = {};

}

};

}

/*********************************/
/********** EXTENSIONS ***********/
/*********************************/

const EXTENSIONS = {
	KHR_BINARY_GLTF: 'KHR_binary_glTF',
	KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
	KHR_LIGHTS_PUNCTUAL: 'KHR_lights_punctual',
	KHR_MATERIALS_CLEARCOAT: 'KHR_materials_clearcoat',
	KHR_MATERIALS_IOR: 'KHR_materials_ior',
	KHR_MATERIALS_SHEEN: 'KHR_materials_sheen',
	KHR_MATERIALS_SPECULAR: 'KHR_materials_specular',
	KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission',
	KHR_MATERIALS_IRIDESCENCE: 'KHR_materials_iridescence',
	KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
	KHR_MATERIALS_VOLUME: 'KHR_materials_volume',
	KHR_TEXTURE_BASISU: 'KHR_texture_basisu',
	KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
	KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
	KHR_MATERIALS_EMISSIVE_STRENGTH: 'KHR_materials_emissive_strength',
	EXT_TEXTURE_WEBP: 'EXT_texture_webp',
	EXT_TEXTURE_AVIF: 'EXT_texture_avif',
	EXT_MESHOPT_COMPRESSION: 'EXT_meshopt_compression',
	EXT_MESH_GPU_INSTANCING: 'EXT_mesh_gpu_instancing'
};

/**
 * Punctual Lights Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
 */
class GLTFLightsExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;

// Object3D instance caches
		this.cache = { refs: {}, uses: {} };

}

_markDefs() {

const parser = this.parser;
		const nodeDefs = this.parser.json.nodes || [];

for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {

const nodeDef = nodeDefs[ nodeIndex ];

if ( nodeDef.extensions
					&& nodeDef.extensions[ this.name ]
					&& nodeDef.extensions[ this.name ].light !== undefined ) {

parser._addNodeRef( this.cache, nodeDef.extensions[ this.name ].light );

}

_loadLight( lightIndex ) {

const parser = this.parser;
		const cacheKey = 'light:' + lightIndex;
		let dependency = parser.cache.get( cacheKey );

if ( dependency ) return dependency;

const json = parser.json;
		const extensions = ( json.extensions && json.extensions[ this.name ] ) || {};
		const lightDefs = extensions.lights || [];
		const lightDef = lightDefs[ lightIndex ];
		let lightNode;

const color = new three__WEBPACK_IMPORTED_MODULE_0__.Color( 0xffffff );

if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );

const range = lightDef.range !== undefined ? lightDef.range : 0;

switch ( lightDef.type ) {

case 'directional':
				lightNode = new three__WEBPACK_IMPORTED_MODULE_0__.DirectionalLight( color );
				lightNode.target.position.set( 0, 0, - 1 );
				lightNode.add( lightNode.target );
				break;

case 'point':
				lightNode = new three__WEBPACK_IMPORTED_MODULE_0__.PointLight( color );
				lightNode.distance = range;
				break;

case 'spot':
				lightNode = new three__WEBPACK_IMPORTED_MODULE_0__.SpotLight( color );
				lightNode.distance = range;
				// Handle spotlight properties.
				lightDef.spot = lightDef.spot || {};
				lightDef.spot.innerConeAngle = lightDef.spot.innerConeAngle !== undefined ? lightDef.spot.innerConeAngle : 0;
				lightDef.spot.outerConeAngle = lightDef.spot.outerConeAngle !== undefined ? lightDef.spot.outerConeAngle : Math.PI / 4.0;
				lightNode.angle = lightDef.spot.outerConeAngle;
				lightNode.penumbra = 1.0 - lightDef.spot.innerConeAngle / lightDef.spot.outerConeAngle;
				lightNode.target.position.set( 0, 0, - 1 );
				lightNode.add( lightNode.target );
				break;

default:
				throw new Error( 'THREE.GLTFLoader: Unexpected light type: ' + lightDef.type );

}

// Some lights (e.g. spot) default to a position other than the origin. Reset the position
		// here, because node-level parsing will only override position if explicitly specified.
		lightNode.position.set( 0, 0, 0 );

lightNode.decay = 2;

assignExtrasToUserData( lightNode, lightDef );

if ( lightDef.intensity !== undefined ) lightNode.intensity = lightDef.intensity;

lightNode.name = parser.createUniqueName( lightDef.name || ( 'light_' + lightIndex ) );

dependency = Promise.resolve( lightNode );

parser.cache.add( cacheKey, dependency );

return dependency;

}

getDependency( type, index ) {

if ( type !== 'light' ) return;

return this._loadLight( index );

}

createNodeAttachment( nodeIndex ) {

const self = this;
		const parser = this.parser;
		const json = parser.json;
		const nodeDef = json.nodes[ nodeIndex ];
		const lightDef = ( nodeDef.extensions && nodeDef.extensions[ this.name ] ) || {};
		const lightIndex = lightDef.light;

if ( lightIndex === undefined ) return null;

return this._loadLight( lightIndex ).then( function ( light ) {

return parser._getNodeRef( self.cache, lightIndex, light );

} );

}

/**
 * Unlit Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
 */
class GLTFMaterialsUnlitExtension {

constructor() {

this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;

}

getMaterialType() {

return three__WEBPACK_IMPORTED_MODULE_0__.MeshBasicMaterial;

}

extendParams( materialParams, materialDef, parser ) {

const pending = [];

materialParams.color = new three__WEBPACK_IMPORTED_MODULE_0__.Color( 1.0, 1.0, 1.0 );
		materialParams.opacity = 1.0;

const metallicRoughness = materialDef.pbrMetallicRoughness;

if ( metallicRoughness ) {

if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {

const array = metallicRoughness.baseColorFactor;

materialParams.color.fromArray( array );
				materialParams.opacity = array[ 3 ];

}

if ( metallicRoughness.baseColorTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture, three__WEBPACK_IMPORTED_MODULE_0__.sRGBEncoding ) );

}

return Promise.all( pending );

}

/**
 * Materials Emissive Strength Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/blob/5768b3ce0ef32bc39cdf1bef10b948586635ead3/extensions/2.0/Khronos/KHR_materials_emissive_strength/README.md
 */
class GLTFMaterialsEmissiveStrengthExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_EMISSIVE_STRENGTH;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const emissiveStrength = materialDef.extensions[ this.name ].emissiveStrength;

if ( emissiveStrength !== undefined ) {

materialParams.emissiveIntensity = emissiveStrength;

}

return Promise.resolve();

}

/**
 * Clearcoat Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat
 */
class GLTFMaterialsClearcoatExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

const extension = materialDef.extensions[ this.name ];

if ( extension.clearcoatFactor !== undefined ) {

materialParams.clearcoat = extension.clearcoatFactor;

}

if ( extension.clearcoatTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'clearcoatMap', extension.clearcoatTexture ) );

}

if ( extension.clearcoatRoughnessFactor !== undefined ) {

materialParams.clearcoatRoughness = extension.clearcoatRoughnessFactor;

}

if ( extension.clearcoatRoughnessTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'clearcoatRoughnessMap', extension.clearcoatRoughnessTexture ) );

}

if ( extension.clearcoatNormalTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'clearcoatNormalMap', extension.clearcoatNormalTexture ) );

if ( extension.clearcoatNormalTexture.scale !== undefined ) {

const scale = extension.clearcoatNormalTexture.scale;

materialParams.clearcoatNormalScale = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2( scale, scale );

}

return Promise.all( pending );

}

/**
 * Iridescence Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_iridescence
 */
class GLTFMaterialsIridescenceExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_IRIDESCENCE;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

const extension = materialDef.extensions[ this.name ];

if ( extension.iridescenceFactor !== undefined ) {

materialParams.iridescence = extension.iridescenceFactor;

}

if ( extension.iridescenceTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'iridescenceMap', extension.iridescenceTexture ) );

}

if ( extension.iridescenceIor !== undefined ) {

materialParams.iridescenceIOR = extension.iridescenceIor;

}

if ( materialParams.iridescenceThicknessRange === undefined ) {

materialParams.iridescenceThicknessRange = [ 100, 400 ];

}

if ( extension.iridescenceThicknessMinimum !== undefined ) {

materialParams.iridescenceThicknessRange[ 0 ] = extension.iridescenceThicknessMinimum;

}

if ( extension.iridescenceThicknessMaximum !== undefined ) {

materialParams.iridescenceThicknessRange[ 1 ] = extension.iridescenceThicknessMaximum;

}

if ( extension.iridescenceThicknessTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'iridescenceThicknessMap', extension.iridescenceThicknessTexture ) );

}

return Promise.all( pending );

}

/**
 * Sheen Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_materials_sheen
 */
class GLTFMaterialsSheenExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_SHEEN;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

materialParams.sheenColor = new three__WEBPACK_IMPORTED_MODULE_0__.Color( 0, 0, 0 );
		materialParams.sheenRoughness = 0;
		materialParams.sheen = 1;

const extension = materialDef.extensions[ this.name ];

if ( extension.sheenColorFactor !== undefined ) {

materialParams.sheenColor.fromArray( extension.sheenColorFactor );

}

if ( extension.sheenRoughnessFactor !== undefined ) {

materialParams.sheenRoughness = extension.sheenRoughnessFactor;

}

if ( extension.sheenColorTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'sheenColorMap', extension.sheenColorTexture, three__WEBPACK_IMPORTED_MODULE_0__.sRGBEncoding ) );

}

if ( extension.sheenRoughnessTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'sheenRoughnessMap', extension.sheenRoughnessTexture ) );

}

return Promise.all( pending );

}

/**
 * Transmission Materials Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission
 * Draft: https://github.com/KhronosGroup/glTF/pull/1698
 */
class GLTFMaterialsTransmissionExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

const extension = materialDef.extensions[ this.name ];

if ( extension.transmissionFactor !== undefined ) {

materialParams.transmission = extension.transmissionFactor;

}

if ( extension.transmissionTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'transmissionMap', extension.transmissionTexture ) );

}

return Promise.all( pending );

}

/**
 * Materials Volume Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_volume
 */
class GLTFMaterialsVolumeExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_VOLUME;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

const extension = materialDef.extensions[ this.name ];

materialParams.thickness = extension.thicknessFactor !== undefined ? extension.thicknessFactor : 0;

if ( extension.thicknessTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'thicknessMap', extension.thicknessTexture ) );

}

materialParams.attenuationDistance = extension.attenuationDistance || Infinity;

const colorArray = extension.attenuationColor || [ 1, 1, 1 ];
		materialParams.attenuationColor = new three__WEBPACK_IMPORTED_MODULE_0__.Color( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ] );

return Promise.all( pending );

}

/**
 * Materials ior Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_ior
 */
class GLTFMaterialsIorExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_IOR;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const extension = materialDef.extensions[ this.name ];

materialParams.ior = extension.ior !== undefined ? extension.ior : 1.5;

return Promise.resolve();

}

/**
 * Materials specular Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_specular
 */
class GLTFMaterialsSpecularExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_MATERIALS_SPECULAR;

}

getMaterialType( materialIndex ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;

return three__WEBPACK_IMPORTED_MODULE_0__.MeshPhysicalMaterial;

}

extendMaterialParams( materialIndex, materialParams ) {

const parser = this.parser;
		const materialDef = parser.json.materials[ materialIndex ];

if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {

return Promise.resolve();

}

const pending = [];

const extension = materialDef.extensions[ this.name ];

materialParams.specularIntensity = extension.specularFactor !== undefined ? extension.specularFactor : 1.0;

if ( extension.specularTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'specularIntensityMap', extension.specularTexture ) );

}

const colorArray = extension.specularColorFactor || [ 1, 1, 1 ];
		materialParams.specularColor = new three__WEBPACK_IMPORTED_MODULE_0__.Color( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ] );

if ( extension.specularColorTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'specularColorMap', extension.specularColorTexture, three__WEBPACK_IMPORTED_MODULE_0__.sRGBEncoding ) );

}

return Promise.all( pending );

}

/**
 * BasisU Texture Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu
 */
class GLTFTextureBasisUExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.KHR_TEXTURE_BASISU;

}

loadTexture( textureIndex ) {

const parser = this.parser;
		const json = parser.json;

const textureDef = json.textures[ textureIndex ];

if ( ! textureDef.extensions || ! textureDef.extensions[ this.name ] ) {

return null;

}

const extension = textureDef.extensions[ this.name ];
		const loader = parser.options.ktx2Loader;

if ( ! loader ) {

if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {

throw new Error( 'THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures' );

} else {

// Assumes that the extension is optional and that a fallback texture is present
				return null;

}

return parser.loadTextureImage( textureIndex, extension.source, loader );

}

/**
 * WebP Texture Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_webp
 */
class GLTFTextureWebPExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.EXT_TEXTURE_WEBP;
		this.isSupported = null;

}

loadTexture( textureIndex ) {

const name = this.name;
		const parser = this.parser;
		const json = parser.json;

const textureDef = json.textures[ textureIndex ];

if ( ! textureDef.extensions || ! textureDef.extensions[ name ] ) {

return null;

}

const extension = textureDef.extensions[ name ];
		const source = json.images[ extension.source ];

let loader = parser.textureLoader;
		if ( source.uri ) {

const handler = parser.options.manager.getHandler( source.uri );
			if ( handler !== null ) loader = handler;

}

return this.detectSupport().then( function ( isSupported ) {

if ( isSupported ) return parser.loadTextureImage( textureIndex, extension.source, loader );

if ( json.extensionsRequired && json.extensionsRequired.indexOf( name ) >= 0 ) {

throw new Error( 'THREE.GLTFLoader: WebP required by asset but unsupported.' );

}

// Fall back to PNG or JPEG.
			return parser.loadTexture( textureIndex );

} );

}

detectSupport() {

if ( ! this.isSupported ) {

this.isSupported = new Promise( function ( resolve ) {

const image = new Image();

// Lossy test image. Support for lossy images doesn't guarantee support for all
				// WebP images, unfortunately.
				image.src = 'data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA';

image.onload = image.onerror = function () {

resolve( image.height === 1 );

};

} );

}

return this.isSupported;

}

/**
 * AVIF Texture Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_avif
 */
class GLTFTextureAVIFExtension {

constructor( parser ) {

this.parser = parser;
		this.name = EXTENSIONS.EXT_TEXTURE_AVIF;
		this.isSupported = null;

}

loadTexture( textureIndex ) {

const name = this.name;
		const parser = this.parser;
		const json = parser.json;

const textureDef = json.textures[ textureIndex ];

if ( ! textureDef.extensions || ! textureDef.extensions[ name ] ) {

return null;

}

const extension = textureDef.extensions[ name ];
		const source = json.images[ extension.source ];

let loader = parser.textureLoader;
		if ( source.uri ) {

const handler = parser.options.manager.getHandler( source.uri );
			if ( handler !== null ) loader = handler;

}

return this.detectSupport().then( function ( isSupported ) {

if ( isSupported ) return parser.loadTextureImage( textureIndex, extension.source, loader );

if ( json.extensionsRequired && json.extensionsRequired.indexOf( name ) >= 0 ) {

throw new Error( 'THREE.GLTFLoader: AVIF required by asset but unsupported.' );

}

// Fall back to PNG or JPEG.
			return parser.loadTexture( textureIndex );

} );

}

detectSupport() {

if ( ! this.isSupported ) {

this.isSupported = new Promise( function ( resolve ) {

const image = new Image();

// Lossy test image.
				image.src = 'data:image/avif;base64,AAAAIGZ0eXBhdmlmAAAAAGF2aWZtaWYxbWlhZk1BMUIAAADybWV0YQAAAAAAAAAoaGRscgAAAAAAAAAAcGljdAAAAAAAAAAAAAAAAGxpYmF2aWYAAAAADnBpdG0AAAAAAAEAAAAeaWxvYwAAAABEAAABAAEAAAABAAABGgAAABcAAAAoaWluZgAAAAAAAQAAABppbmZlAgAAAAABAABhdjAxQ29sb3IAAAAAamlwcnAAAABLaXBjbwAAABRpc3BlAAAAAAAAAAEAAAABAAAAEHBpeGkAAAAAAwgICAAAAAxhdjFDgQAMAAAAABNjb2xybmNseAACAAIABoAAAAAXaXBtYQAAAAAAAAABAAEEAQKDBAAAAB9tZGF0EgAKCBgABogQEDQgMgkQAAAAB8dSLfI=';
				image.onload = image.onerror = function () {

resolve( image.height === 1 );

};

} );

}

return this.isSupported;

}

/**
 * meshopt BufferView Compression Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_meshopt_compression
 */
class GLTFMeshoptCompression {

constructor( parser ) {

this.name = EXTENSIONS.EXT_MESHOPT_COMPRESSION;
		this.parser = parser;

}

loadBufferView( index ) {

const json = this.parser.json;
		const bufferView = json.bufferViews[ index ];

if ( bufferView.extensions && bufferView.extensions[ this.name ] ) {

const extensionDef = bufferView.extensions[ this.name ];

const buffer = this.parser.getDependency( 'buffer', extensionDef.buffer );
			const decoder = this.parser.options.meshoptDecoder;

if ( ! decoder || ! decoder.supported ) {

if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {

throw new Error( 'THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files' );

} else {

// Assumes that the extension is optional and that fallback buffer data is present
					return null;

}

return buffer.then( function ( res ) {

const byteOffset = extensionDef.byteOffset || 0;
				const byteLength = extensionDef.byteLength || 0;

const count = extensionDef.count;
				const stride = extensionDef.byteStride;

const source = new Uint8Array( res, byteOffset, byteLength );

if ( decoder.decodeGltfBufferAsync ) {

return decoder.decodeGltfBufferAsync( count, stride, source, extensionDef.mode, extensionDef.filter ).then( function ( res ) {

return res.buffer;

} );

} else {

// Support for MeshoptDecoder 0.18 or earlier, without decodeGltfBufferAsync
					return decoder.ready.then( function () {

const result = new ArrayBuffer( count * stride );
						decoder.decodeGltfBuffer( new Uint8Array( result ), count, stride, source, extensionDef.mode, extensionDef.filter );
						return result;

} );

}

} );

} else {

return null;

}

/**
 * GPU Instancing Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_mesh_gpu_instancing
 *
 */
class GLTFMeshGpuInstancing {

constructor( parser ) {

this.name = EXTENSIONS.EXT_MESH_GPU_INSTANCING;
		this.parser = parser;

}

createNodeMesh( nodeIndex ) {

const json = this.parser.json;
		const nodeDef = json.nodes[ nodeIndex ];

if ( ! nodeDef.extensions || ! nodeDef.extensions[ this.name ] ||
			nodeDef.mesh === undefined ) {

return null;

}

const meshDef = json.meshes[ nodeDef.mesh ];

// No Points or Lines + Instancing support yet

for ( const primitive of meshDef.primitives ) {

if ( primitive.mode !== WEBGL_CONSTANTS.TRIANGLES &&
				 primitive.mode !== WEBGL_CONSTANTS.TRIANGLE_STRIP &&
				 primitive.mode !== WEBGL_CONSTANTS.TRIANGLE_FAN &&
				 primitive.mode !== undefined ) {

return null;

}

const extensionDef = nodeDef.extensions[ this.name ];
		const attributesDef = extensionDef.attributes;

// @TODO: Can we support InstancedMesh + SkinnedMesh?

const pending = [];
		const attributes = {};

for ( const key in attributesDef ) {

pending.push( this.parser.getDependency( 'accessor', attributesDef[ key ] ).then( accessor => {

attributes[ key ] = accessor;
				return attributes[ key ];

} ) );

}

if ( pending.length < 1 ) {

return null;

}

pending.push( this.parser.createNodeMesh( nodeIndex ) );

return Promise.all( pending ).then( results => {

const nodeObject = results.pop();
			const meshes = nodeObject.isGroup ? nodeObject.children : [ nodeObject ];
			const count = results[ 0 ].count; // All attribute counts should be same
			const instancedMeshes = [];

for ( const mesh of meshes ) {

// Temporal variables
				const m = new three__WEBPACK_IMPORTED_MODULE_0__.Matrix4();
				const p = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
				const q = new three__WEBPACK_IMPORTED_MODULE_0__.Quaternion();
				const s = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3( 1, 1, 1 );

const instancedMesh = new three__WEBPACK_IMPORTED_MODULE_0__.InstancedMesh( mesh.geometry, mesh.material, count );

for ( let i = 0; i < count; i ++ ) {

if ( attributes.TRANSLATION ) {

p.fromBufferAttribute( attributes.TRANSLATION, i );

}

if ( attributes.ROTATION ) {

q.fromBufferAttribute( attributes.ROTATION, i );

}

if ( attributes.SCALE ) {

s.fromBufferAttribute( attributes.SCALE, i );

}

instancedMesh.setMatrixAt( i, m.compose( p, q, s ) );

}

// Add instance attributes to the geometry, excluding TRS.
				for ( const attributeName in attributes ) {

if ( attributeName !== 'TRANSLATION' &&
						 attributeName !== 'ROTATION' &&
						 attributeName !== 'SCALE' ) {

mesh.geometry.setAttribute( attributeName, attributes[ attributeName ] );

}

// Just in case
				three__WEBPACK_IMPORTED_MODULE_0__.Object3D.prototype.copy.call( instancedMesh, mesh );

this.parser.assignFinalMaterial( instancedMesh );

instancedMeshes.push( instancedMesh );

}

if ( nodeObject.isGroup ) {

nodeObject.clear();

nodeObject.add( ... instancedMeshes );

return nodeObject;

}

return instancedMeshes[ 0 ];

} );

}

/* BINARY EXTENSION */
const BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
const BINARY_EXTENSION_HEADER_LENGTH = 12;
const BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };

class GLTFBinaryExtension {

constructor( data ) {

this.name = EXTENSIONS.KHR_BINARY_GLTF;
		this.content = null;
		this.body = null;

const headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
		const textDecoder = new TextDecoder();

this.header = {
			magic: textDecoder.decode( new Uint8Array( data.slice( 0, 4 ) ) ),
			version: headerView.getUint32( 4, true ),
			length: headerView.getUint32( 8, true )
		};

if ( this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC ) {

throw new Error( 'THREE.GLTFLoader: Unsupported glTF-Binary header.' );

} else if ( this.header.version < 2.0 ) {

throw new Error( 'THREE.GLTFLoader: Legacy binary file detected.' );

}

const chunkContentsLength = this.header.length - BINARY_EXTENSION_HEADER_LENGTH;
		const chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
		let chunkIndex = 0;

while ( chunkIndex < chunkContentsLength ) {

const chunkLength = chunkView.getUint32( chunkIndex, true );
			chunkIndex += 4;

const chunkType = chunkView.getUint32( chunkIndex, true );
			chunkIndex += 4;

if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {

const contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
				this.content = textDecoder.decode( contentArray );

} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {

const byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex;
				this.body = data.slice( byteOffset, byteOffset + chunkLength );

}

// Clients must ignore chunks with unknown types.

chunkIndex += chunkLength;

}

if ( this.content === null ) {

throw new Error( 'THREE.GLTFLoader: JSON content not found.' );

}

/**
 * DRACO Mesh Compression Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
 */
class GLTFDracoMeshCompressionExtension {

constructor( json, dracoLoader ) {

if ( ! dracoLoader ) {

throw new Error( 'THREE.GLTFLoader: No DRACOLoader instance provided.' );

}

this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION;
		this.json = json;
		this.dracoLoader = dracoLoader;
		this.dracoLoader.preload();

}

decodePrimitive( primitive, parser ) {

for ( const attributeName in gltfAttributeMap ) {

const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();

threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];

}

for ( const attributeName in primitive.attributes ) {

const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();

if ( gltfAttributeMap[ attributeName ] !== undefined ) {

const accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
				const componentType = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];

attributeTypeMap[ threeAttributeName ] = componentType.name;
				attributeNormalizedMap[ threeAttributeName ] = accessorDef.normalized === true;

}

return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {

return new Promise( function ( resolve ) {

dracoLoader.decodeDracoFile( bufferView, function ( geometry ) {

for ( const attributeName in geometry.attributes ) {

const attribute = geometry.attributes[ attributeName ];
						const normalized = attributeNormalizedMap[ attributeName ];

if ( normalized !== undefined ) attribute.normalized = normalized;

}

resolve( geometry );

}, threeAttributeMap, attributeTypeMap );

} );

}

/**
 * Texture Transform Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
 */
class GLTFTextureTransformExtension {

constructor() {

this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;

}

extendTexture( texture, transform ) {

if ( ( transform.texCoord === undefined || transform.texCoord === texture.channel )
			&& transform.offset === undefined
			&& transform.rotation === undefined
			&& transform.scale === undefined ) {

// See https://github.com/mrdoob/three.js/issues/21819.
			return texture;

}

texture = texture.clone();

if ( transform.texCoord !== undefined ) {

texture.channel = transform.texCoord;

}

if ( transform.offset !== undefined ) {

texture.offset.fromArray( transform.offset );

}

if ( transform.rotation !== undefined ) {

texture.rotation = transform.rotation;

}

if ( transform.scale !== undefined ) {

texture.repeat.fromArray( transform.scale );

}

texture.needsUpdate = true;

return texture;

}

/**
 * Mesh Quantization Extension
 *
 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
 */
class GLTFMeshQuantizationExtension {

constructor() {

this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;

}

/*********************************/
/********** INTERPOLATION ********/
/*********************************/

// Spline Interpolation
// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation
class GLTFCubicSplineInterpolant extends three__WEBPACK_IMPORTED_MODULE_0__.Interpolant {

constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {

super( parameterPositions, sampleValues, sampleSize, resultBuffer );

}

copySampleValue_( index ) {

// Copies a sample value to the result buffer. See description of glTF
		// CUBICSPLINE values layout in interpolate_() function below.

const result = this.resultBuffer,
			values = this.sampleValues,
			valueSize = this.valueSize,
			offset = index * valueSize * 3 + valueSize;

for ( let i = 0; i !== valueSize; i ++ ) {

result[ i ] = values[ offset + i ];

}

return result;

}

interpolate_( i1, t0, t, t1 ) {

const result = this.resultBuffer;
		const values = this.sampleValues;
		const stride = this.valueSize;

const stride2 = stride * 2;
		const stride3 = stride * 3;

const td = t1 - t0;

const p = ( t - t0 ) / td;
		const pp = p * p;
		const ppp = pp * p;

const offset1 = i1 * stride3;
		const offset0 = offset1 - stride3;

const s2 = - 2 * ppp + 3 * pp;
		const s3 = ppp - pp;
		const s0 = 1 - s2;
		const s1 = s3 - pp + p;

// Layout of keyframe output values for CUBICSPLINE animations:
		//   [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
		for ( let i = 0; i !== stride; i ++ ) {

const p0 = values[ offset0 + i + stride ]; // splineVertex_k
			const m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
			const p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
			const m1 = values[ offset1 + i ] * td; // inTangent_k+1 * (t_k+1 - t_k)

result[ i ] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1;

}

return result;

}

const _q = new three__WEBPACK_IMPORTED_MODULE_0__.Quaternion();

class GLTFCubicSplineQuaternionInterpolant extends GLTFCubicSplineInterpolant {

interpolate_( i1, t0, t, t1 ) {

const result = super.interpolate_( i1, t0, t, t1 );

_q.fromArray( result ).normalize().toArray( result );

return result;

}

/*********************************/
/********** INTERNALS ************/
/*********************************/

/* CONSTANTS */

const WEBGL_CONSTANTS = {
	FLOAT: 5126,
	//FLOAT_MAT2: 35674,
	FLOAT_MAT3: 35675,
	FLOAT_MAT4: 35676,
	FLOAT_VEC2: 35664,
	FLOAT_VEC3: 35665,
	FLOAT_VEC4: 35666,
	LINEAR: 9729,
	REPEAT: 10497,
	SAMPLER_2D: 35678,
	POINTS: 0,
	LINES: 1,
	LINE_LOOP: 2,
	LINE_STRIP: 3,
	TRIANGLES: 4,
	TRIANGLE_STRIP: 5,
	TRIANGLE_FAN: 6,
	UNSIGNED_BYTE: 5121,
	UNSIGNED_SHORT: 5123
};

const WEBGL_COMPONENT_TYPES = {
	5120: Int8Array,
	5121: Uint8Array,
	5122: Int16Array,
	5123: Uint16Array,
	5125: Uint32Array,
	5126: Float32Array
};

const WEBGL_FILTERS = {
	9728: three__WEBPACK_IMPORTED_MODULE_0__.NearestFilter,
	9729: three__WEBPACK_IMPORTED_MODULE_0__.LinearFilter,
	9984: three__WEBPACK_IMPORTED_MODULE_0__.NearestMipmapNearestFilter,
	9985: three__WEBPACK_IMPORTED_MODULE_0__.LinearMipmapNearestFilter,
	9986: three__WEBPACK_IMPORTED_MODULE_0__.NearestMipmapLinearFilter,
	9987: three__WEBPACK_IMPORTED_MODULE_0__.LinearMipmapLinearFilter
};

const WEBGL_WRAPPINGS = {
	33071: three__WEBPACK_IMPORTED_MODULE_0__.ClampToEdgeWrapping,
	33648: three__WEBPACK_IMPORTED_MODULE_0__.MirroredRepeatWrapping,
	10497: three__WEBPACK_IMPORTED_MODULE_0__.RepeatWrapping
};

const WEBGL_TYPE_SIZES = {
	'SCALAR': 1,
	'VEC2': 2,
	'VEC3': 3,
	'VEC4': 4,
	'MAT2': 4,
	'MAT3': 9,
	'MAT4': 16
};

const ATTRIBUTES = {
	POSITION: 'position',
	NORMAL: 'normal',
	TANGENT: 'tangent',
	TEXCOORD_0: 'uv',
	TEXCOORD_1: 'uv2',
	COLOR_0: 'color',
	WEIGHTS_0: 'skinWeight',
	JOINTS_0: 'skinIndex',
};

const PATH_PROPERTIES = {
	scale: 'scale',
	translation: 'position',
	rotation: 'quaternion',
	weights: 'morphTargetInfluences'
};

const INTERPOLATION = {
	CUBICSPLINE: undefined, // We use a custom interpolant (GLTFCubicSplineInterpolation) for CUBICSPLINE tracks. Each
		                        // keyframe track will be initialized with a default interpolation type, then modified.
	LINEAR: three__WEBPACK_IMPORTED_MODULE_0__.InterpolateLinear,
	STEP: three__WEBPACK_IMPORTED_MODULE_0__.InterpolateDiscrete
};

const ALPHA_MODES = {
	OPAQUE: 'OPAQUE',
	MASK: 'MASK',
	BLEND: 'BLEND'
};

/**
 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
 */
function createDefaultMaterial( cache ) {

if ( cache[ 'DefaultMaterial' ] === undefined ) {

cache[ 'DefaultMaterial' ] = new three__WEBPACK_IMPORTED_MODULE_0__.MeshStandardMaterial( {
			color: 0xFFFFFF,
			emissive: 0x000000,
			metalness: 1,
			roughness: 1,
			transparent: false,
			depthTest: true,
			side: three__WEBPACK_IMPORTED_MODULE_0__.FrontSide
		} );

}

return cache[ 'DefaultMaterial' ];

}

function addUnknownExtensionsToUserData( knownExtensions, object, objectDef ) {

// Add unknown glTF extensions to an object's userData.

for ( const name in objectDef.extensions ) {

if ( knownExtensions[ name ] === undefined ) {

object.userData.gltfExtensions = object.userData.gltfExtensions || {};
			object.userData.gltfExtensions[ name ] = objectDef.extensions[ name ];

}

/**
 * @param {Object3D|Material|BufferGeometry} object
 * @param {GLTF.definition} gltfDef
 */
function assignExtrasToUserData( object, gltfDef ) {

if ( gltfDef.extras !== undefined ) {

if ( typeof gltfDef.extras === 'object' ) {

Object.assign( object.userData, gltfDef.extras );

} else {

console.warn( 'THREE.GLTFLoader: Ignoring primitive type .extras, ' + gltfDef.extras );

}

/**
 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
 *
 * @param {BufferGeometry} geometry
 * @param {Array<GLTF.Target>} targets
 * @param {GLTFParser} parser
 * @return {Promise<BufferGeometry>}
 */
function addMorphTargets( geometry, targets, parser ) {

let hasMorphPosition = false;
	let hasMorphNormal = false;
	let hasMorphColor = false;

for ( let i = 0, il = targets.length; i < il; i ++ ) {

const target = targets[ i ];

if ( target.POSITION !== undefined ) hasMorphPosition = true;
		if ( target.NORMAL !== undefined ) hasMorphNormal = true;
		if ( target.COLOR_0 !== undefined ) hasMorphColor = true;

if ( hasMorphPosition && hasMorphNormal && hasMorphColor ) break;

}

if ( ! hasMorphPosition && ! hasMorphNormal && ! hasMorphColor ) return Promise.resolve( geometry );

const pendingPositionAccessors = [];
	const pendingNormalAccessors = [];
	const pendingColorAccessors = [];

for ( let i = 0, il = targets.length; i < il; i ++ ) {

const target = targets[ i ];

if ( hasMorphPosition ) {

const pendingAccessor = target.POSITION !== undefined
				? parser.getDependency( 'accessor', target.POSITION )
				: geometry.attributes.position;

pendingPositionAccessors.push( pendingAccessor );

}

if ( hasMorphNormal ) {

const pendingAccessor = target.NORMAL !== undefined
				? parser.getDependency( 'accessor', target.NORMAL )
				: geometry.attributes.normal;

pendingNormalAccessors.push( pendingAccessor );

}

if ( hasMorphColor ) {

const pendingAccessor = target.COLOR_0 !== undefined
				? parser.getDependency( 'accessor', target.COLOR_0 )
				: geometry.attributes.color;

pendingColorAccessors.push( pendingAccessor );

}

return Promise.all( [
		Promise.all( pendingPositionAccessors ),
		Promise.all( pendingNormalAccessors ),
		Promise.all( pendingColorAccessors )
	] ).then( function ( accessors ) {

const morphPositions = accessors[ 0 ];
		const morphNormals = accessors[ 1 ];
		const morphColors = accessors[ 2 ];

if ( hasMorphPosition ) geometry.morphAttributes.position = morphPositions;
		if ( hasMorphNormal ) geometry.morphAttributes.normal = morphNormals;
		if ( hasMorphColor ) geometry.morphAttributes.color = morphColors;
		geometry.morphTargetsRelative = true;

return geometry;

} );

}

/**
 * @param {Mesh} mesh
 * @param {GLTF.Mesh} meshDef
 */
function updateMorphTargets( mesh, meshDef ) {

mesh.updateMorphTargets();

if ( meshDef.weights !== undefined ) {

for ( let i = 0, il = meshDef.weights.length; i < il; i ++ ) {

mesh.morphTargetInfluences[ i ] = meshDef.weights[ i ];

}

// .extras has user-defined data, so check that .extras.targetNames is an array.
	if ( meshDef.extras && Array.isArray( meshDef.extras.targetNames ) ) {

const targetNames = meshDef.extras.targetNames;

if ( mesh.morphTargetInfluences.length === targetNames.length ) {

mesh.morphTargetDictionary = {};

for ( let i = 0, il = targetNames.length; i < il; i ++ ) {

mesh.morphTargetDictionary[ targetNames[ i ] ] = i;

}

} else {

console.warn( 'THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.' );

}

function createPrimitiveKey( primitiveDef ) {

const dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
	let geometryKey;

if ( dracoExtension ) {

geometryKey = 'draco:' + dracoExtension.bufferView
				+ ':' + dracoExtension.indices
				+ ':' + createAttributesKey( dracoExtension.attributes );

} else {

geometryKey = primitiveDef.indices + ':' + createAttributesKey( primitiveDef.attributes ) + ':' + primitiveDef.mode;

}

return geometryKey;

}

function createAttributesKey( attributes ) {

let attributesKey = '';

const keys = Object.keys( attributes ).sort();

for ( let i = 0, il = keys.length; i < il; i ++ ) {

attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';

}

return attributesKey;

}

function getNormalizedComponentScale( constructor ) {

// Reference:
	// https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization#encoding-quantized-data

switch ( constructor ) {

case Int8Array:
			return 1 / 127;

case Uint8Array:
			return 1 / 255;

case Int16Array:
			return 1 / 32767;

case Uint16Array:
			return 1 / 65535;

default:
			throw new Error( 'THREE.GLTFLoader: Unsupported normalized accessor component type.' );

}

function getImageURIMimeType( uri ) {

if ( uri.search( /\.jpe?g($|\?)/i ) > 0 || uri.search( /^data\:image\/jpeg/ ) === 0 ) return 'image/jpeg';
	if ( uri.search( /\.webp($|\?)/i ) > 0 || uri.search( /^data\:image\/webp/ ) === 0 ) return 'image/webp';

return 'image/png';

}

const _identityMatrix = new three__WEBPACK_IMPORTED_MODULE_0__.Matrix4();

/* GLTF PARSER */

class GLTFParser {

constructor( json = {}, options = {} ) {

this.json = json;
		this.extensions = {};
		this.plugins = {};
		this.options = options;

// loader object cache
		this.cache = new GLTFRegistry();

// associations between Three.js objects and glTF elements
		this.associations = new Map();

// BufferGeometry caching
		this.primitiveCache = {};

// Node cache
		this.nodeCache = {};

// Object3D instance caches
		this.meshCache = { refs: {}, uses: {} };
		this.cameraCache = { refs: {}, uses: {} };
		this.lightCache = { refs: {}, uses: {} };

this.sourceCache = {};
		this.textureCache = {};

// Track node names, to ensure no duplicates
		this.nodeNamesUsed = {};

// Use an ImageBitmapLoader if imageBitmaps are supported. Moves much of the
		// expensive work of uploading a texture to the GPU off the main thread.

let isSafari = false;
		let isFirefox = false;
		let firefoxVersion = - 1;

if ( typeof navigator !== 'undefined' ) {

isSafari = /^((?!chrome|android).)*safari/i.test( navigator.userAgent ) === true;
			isFirefox = navigator.userAgent.indexOf( 'Firefox' ) > - 1;
			firefoxVersion = isFirefox ? navigator.userAgent.match( /Firefox\/([0-9]+)\./ )[ 1 ] : - 1;

}

if ( typeof createImageBitmap === 'undefined' || isSafari || ( isFirefox && firefoxVersion < 98 ) ) {

this.textureLoader = new three__WEBPACK_IMPORTED_MODULE_0__.TextureLoader( this.options.manager );

} else {

this.textureLoader = new three__WEBPACK_IMPORTED_MODULE_0__.ImageBitmapLoader( this.options.manager );

}

this.textureLoader.setCrossOrigin( this.options.crossOrigin );
		this.textureLoader.setRequestHeader( this.options.requestHeader );

this.fileLoader = new three__WEBPACK_IMPORTED_MODULE_0__.FileLoader( this.options.manager );
		this.fileLoader.setResponseType( 'arraybuffer' );

if ( this.options.crossOrigin === 'use-credentials' ) {

this.fileLoader.setWithCredentials( true );

}

setExtensions( extensions ) {

this.extensions = extensions;

}

setPlugins( plugins ) {

this.plugins = plugins;

}

parse( onLoad, onError ) {

const parser = this;
		const json = this.json;
		const extensions = this.extensions;

// Clear the loader cache
		this.cache.removeAll();
		this.nodeCache = {};

// Mark the special nodes/meshes in json for efficient parse
		this._invokeAll( function ( ext ) {

return ext._markDefs && ext._markDefs();

} );

Promise.all( this._invokeAll( function ( ext ) {

return ext.beforeRoot && ext.beforeRoot();

} ) ).then( function () {

return Promise.all( [

parser.getDependencies( 'scene' ),
				parser.getDependencies( 'animation' ),
				parser.getDependencies( 'camera' ),

] );

} ).then( function ( dependencies ) {

const result = {
				scene: dependencies[ 0 ][ json.scene || 0 ],
				scenes: dependencies[ 0 ],
				animations: dependencies[ 1 ],
				cameras: dependencies[ 2 ],
				asset: json.asset,
				parser: parser,
				userData: {}
			};

addUnknownExtensionsToUserData( extensions, result, json );

assignExtrasToUserData( result, json );

Promise.all( parser._invokeAll( function ( ext ) {

return ext.afterRoot && ext.afterRoot( result );

} ) ).then( function () {

onLoad( result );

} );

} ).catch( onError );

}

/**
	 * Marks the special nodes/meshes in json for efficient parse.
	 */
	_markDefs() {

const nodeDefs = this.json.nodes || [];
		const skinDefs = this.json.skins || [];
		const meshDefs = this.json.meshes || [];

// Nothing in the node definition indicates whether it is a Bone or an
		// Object3D. Use the skins' joint references to mark bones.
		for ( let skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {

const joints = skinDefs[ skinIndex ].joints;

for ( let i = 0, il = joints.length; i < il; i ++ ) {

nodeDefs[ joints[ i ] ].isBone = true;

}

// Iterate over all nodes, marking references to shared resources,
		// as well as skeleton joints.
		for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {

const nodeDef = nodeDefs[ nodeIndex ];

if ( nodeDef.mesh !== undefined ) {

this._addNodeRef( this.meshCache, nodeDef.mesh );

// Nothing in the mesh definition indicates whether it is
				// a SkinnedMesh or Mesh. Use the node's mesh reference
				// to mark SkinnedMesh if node has skin.
				if ( nodeDef.skin !== undefined ) {

meshDefs[ nodeDef.mesh ].isSkinnedMesh = true;

}

if ( nodeDef.camera !== undefined ) {

this._addNodeRef( this.cameraCache, nodeDef.camera );

}

/**
	 * Counts references to shared node / Object3D resources. These resources
	 * can be reused, or "instantiated", at multiple nodes in the scene
	 * hierarchy. Mesh, Camera, and Light instances are instantiated and must
	 * be marked. Non-scenegraph resources (like Materials, Geometries, and
	 * Textures) can be reused directly and are not marked here.
	 *
	 * Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
	 */
	_addNodeRef( cache, index ) {

if ( index === undefined ) return;

if ( cache.refs[ index ] === undefined ) {

cache.refs[ index ] = cache.uses[ index ] = 0;

}

cache.refs[ index ] ++;

}

/** Returns a reference to a shared resource, cloning it if necessary. */
	_getNodeRef( cache, index, object ) {

if ( cache.refs[ index ] <= 1 ) return object;

const ref = object.clone();

// Propagates mappings to the cloned object, prevents mappings on the
		// original object from being lost.
		const updateMappings = ( original, clone ) => {

const mappings = this.associations.get( original );
			if ( mappings != null ) {

this.associations.set( clone, mappings );

}

for ( const [ i, child ] of original.children.entries() ) {

updateMappings( child, clone.children[ i ] );

}

};

updateMappings( object, ref );

ref.name += '_instance_' + ( cache.uses[ index ] ++ );

return ref;

}

_invokeOne( func ) {

const extensions = Object.values( this.plugins );
		extensions.push( this );

for ( let i = 0; i < extensions.length; i ++ ) {

const result = func( extensions[ i ] );

if ( result ) return result;

}

return null;

}

_invokeAll( func ) {

const extensions = Object.values( this.plugins );
		extensions.unshift( this );

const pending = [];

for ( let i = 0; i < extensions.length; i ++ ) {

const result = func( extensions[ i ] );

if ( result ) pending.push( result );

}

return pending;

}

/**
	 * Requests the specified dependency asynchronously, with caching.
	 * @param {string} type
	 * @param {number} index
	 * @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
	 */
	getDependency( type, index ) {

const cacheKey = type + ':' + index;
		let dependency = this.cache.get( cacheKey );

if ( ! dependency ) {

switch ( type ) {

case 'scene':
					dependency = this.loadScene( index );
					break;

case 'node':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadNode && ext.loadNode( index );

} );
					break;

case 'mesh':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadMesh && ext.loadMesh( index );

} );
					break;

case 'accessor':
					dependency = this.loadAccessor( index );
					break;

case 'bufferView':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadBufferView && ext.loadBufferView( index );

} );
					break;

case 'buffer':
					dependency = this.loadBuffer( index );
					break;

case 'material':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadMaterial && ext.loadMaterial( index );

} );
					break;

case 'texture':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadTexture && ext.loadTexture( index );

} );
					break;

case 'skin':
					dependency = this.loadSkin( index );
					break;

case 'animation':
					dependency = this._invokeOne( function ( ext ) {

return ext.loadAnimation && ext.loadAnimation( index );

} );
					break;

case 'camera':
					dependency = this.loadCamera( index );
					break;

default:
					dependency = this._invokeOne( function ( ext ) {

return ext != this && ext.getDependency && ext.getDependency( type, index );

} );

if ( ! dependency ) {

throw new Error( 'Unknown type: ' + type );

}

break;

}

this.cache.add( cacheKey, dependency );

}

return dependency;

}

/**
	 * Requests all dependencies of the specified type asynchronously, with caching.
	 * @param {string} type
	 * @return {Promise<Array<Object>>}
	 */
	getDependencies( type ) {

let dependencies = this.cache.get( type );

if ( ! dependencies ) {

const parser = this;
			const defs = this.json[ type + ( type === 'mesh' ? 'es' : 's' ) ] || [];

dependencies = Promise.all( defs.map( function ( def, index ) {

return parser.getDependency( type, index );

} ) );

this.cache.add( type, dependencies );

}

return dependencies;

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
	 * @param {number} bufferIndex
	 * @return {Promise<ArrayBuffer>}
	 */
	loadBuffer( bufferIndex ) {

const bufferDef = this.json.buffers[ bufferIndex ];
		const loader = this.fileLoader;

if ( bufferDef.type && bufferDef.type !== 'arraybuffer' ) {

throw new Error( 'THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.' );

}

// If present, GLB container is required to be the first buffer.
		if ( bufferDef.uri === undefined && bufferIndex === 0 ) {

return Promise.resolve( this.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].body );

}

const options = this.options;

return new Promise( function ( resolve, reject ) {

loader.load( three__WEBPACK_IMPORTED_MODULE_0__.LoaderUtils.resolveURL( bufferDef.uri, options.path ), resolve, undefined, function () {

reject( new Error( 'THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".' ) );

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
	 * @param {number} bufferViewIndex
	 * @return {Promise<ArrayBuffer>}
	 */
	loadBufferView( bufferViewIndex ) {

const bufferViewDef = this.json.bufferViews[ bufferViewIndex ];

return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {

const byteLength = bufferViewDef.byteLength || 0;
			const byteOffset = bufferViewDef.byteOffset || 0;
			return buffer.slice( byteOffset, byteOffset + byteLength );

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
	 * @param {number} accessorIndex
	 * @return {Promise<BufferAttribute|InterleavedBufferAttribute>}
	 */
	loadAccessor( accessorIndex ) {

const parser = this;
		const json = this.json;

const accessorDef = this.json.accessors[ accessorIndex ];

if ( accessorDef.bufferView === undefined && accessorDef.sparse === undefined ) {

const itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
			const TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
			const normalized = accessorDef.normalized === true;

const array = new TypedArray( accessorDef.count * itemSize );
			return Promise.resolve( new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( array, itemSize, normalized ) );

}

const pendingBufferViews = [];

if ( accessorDef.bufferView !== undefined ) {

pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.bufferView ) );

} else {

pendingBufferViews.push( null );

}

if ( accessorDef.sparse !== undefined ) {

pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.indices.bufferView ) );
			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.values.bufferView ) );

}

return Promise.all( pendingBufferViews ).then( function ( bufferViews ) {

const bufferView = bufferViews[ 0 ];

const itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
			const TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];

// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
			const elementBytes = TypedArray.BYTES_PER_ELEMENT;
			const itemBytes = elementBytes * itemSize;
			const byteOffset = accessorDef.byteOffset || 0;
			const byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
			const normalized = accessorDef.normalized === true;
			let array, bufferAttribute;

// The buffer is not interleaved if the stride is the item size in bytes.
			if ( byteStride && byteStride !== itemBytes ) {

// Each "slice" of the buffer, as defined by 'count' elements of 'byteStride' bytes, gets its own InterleavedBuffer
				// This makes sure that IBA.count reflects accessor.count properly
				const ibSlice = Math.floor( byteOffset / byteStride );
				const ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
				let ib = parser.cache.get( ibCacheKey );

if ( ! ib ) {

array = new TypedArray( bufferView, ibSlice * byteStride, accessorDef.count * byteStride / elementBytes );

// Integer parameters to IB/IBA are in array elements, not bytes.
					ib = new three__WEBPACK_IMPORTED_MODULE_0__.InterleavedBuffer( array, byteStride / elementBytes );

parser.cache.add( ibCacheKey, ib );

}

bufferAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.InterleavedBufferAttribute( ib, itemSize, ( byteOffset % byteStride ) / elementBytes, normalized );

} else {

if ( bufferView === null ) {

array = new TypedArray( accessorDef.count * itemSize );

} else {

array = new TypedArray( bufferView, byteOffset, accessorDef.count * itemSize );

}

bufferAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( array, itemSize, normalized );

}

// https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors
			if ( accessorDef.sparse !== undefined ) {

const itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
				const TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];

const byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
				const byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;

const sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
				const sparseValues = new TypedArray( bufferViews[ 2 ], byteOffsetValues, accessorDef.sparse.count * itemSize );

if ( bufferView !== null ) {

// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
					bufferAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( bufferAttribute.array.slice(), bufferAttribute.itemSize, bufferAttribute.normalized );

}

for ( let i = 0, il = sparseIndices.length; i < il; i ++ ) {

const index = sparseIndices[ i ];

bufferAttribute.setX( index, sparseValues[ i * itemSize ] );
					if ( itemSize >= 2 ) bufferAttribute.setY( index, sparseValues[ i * itemSize + 1 ] );
					if ( itemSize >= 3 ) bufferAttribute.setZ( index, sparseValues[ i * itemSize + 2 ] );
					if ( itemSize >= 4 ) bufferAttribute.setW( index, sparseValues[ i * itemSize + 3 ] );
					if ( itemSize >= 5 ) throw new Error( 'THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.' );

}

return bufferAttribute;

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
	 * @param {number} textureIndex
	 * @return {Promise<THREE.Texture|null>}
	 */
	loadTexture( textureIndex ) {

const json = this.json;
		const options = this.options;
		const textureDef = json.textures[ textureIndex ];
		const sourceIndex = textureDef.source;
		const sourceDef = json.images[ sourceIndex ];

let loader = this.textureLoader;

if ( sourceDef.uri ) {

const handler = options.manager.getHandler( sourceDef.uri );
			if ( handler !== null ) loader = handler;

}

return this.loadTextureImage( textureIndex, sourceIndex, loader );

}

loadTextureImage( textureIndex, sourceIndex, loader ) {

const parser = this;
		const json = this.json;

const textureDef = json.textures[ textureIndex ];
		const sourceDef = json.images[ sourceIndex ];

const cacheKey = ( sourceDef.uri || sourceDef.bufferView ) + ':' + textureDef.sampler;

if ( this.textureCache[ cacheKey ] ) {

// See https://github.com/mrdoob/three.js/issues/21559.
			return this.textureCache[ cacheKey ];

}

const promise = this.loadImageSource( sourceIndex, loader ).then( function ( texture ) {

texture.flipY = false;

texture.name = textureDef.name || sourceDef.name || '';

if ( texture.name === '' && typeof sourceDef.uri === 'string' && sourceDef.uri.startsWith( 'data:image/' ) === false ) {

texture.name = sourceDef.uri;

}

const samplers = json.samplers || {};
			const sampler = samplers[ textureDef.sampler ] || {};

texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || three__WEBPACK_IMPORTED_MODULE_0__.LinearFilter;
			texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || three__WEBPACK_IMPORTED_MODULE_0__.LinearMipmapLinearFilter;
			texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || three__WEBPACK_IMPORTED_MODULE_0__.RepeatWrapping;
			texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || three__WEBPACK_IMPORTED_MODULE_0__.RepeatWrapping;

parser.associations.set( texture, { textures: textureIndex } );

return texture;

} ).catch( function () {

return null;

} );

this.textureCache[ cacheKey ] = promise;

return promise;

}

loadImageSource( sourceIndex, loader ) {

const parser = this;
		const json = this.json;
		const options = this.options;

if ( this.sourceCache[ sourceIndex ] !== undefined ) {

return this.sourceCache[ sourceIndex ].then( ( texture ) => texture.clone() );

}

const sourceDef = json.images[ sourceIndex ];

const URL = self.URL || self.webkitURL;

let sourceURI = sourceDef.uri || '';
		let isObjectURL = false;

if ( sourceDef.bufferView !== undefined ) {

// Load binary image data from bufferView, if provided.

sourceURI = parser.getDependency( 'bufferView', sourceDef.bufferView ).then( function ( bufferView ) {

isObjectURL = true;
				const blob = new Blob( [ bufferView ], { type: sourceDef.mimeType } );
				sourceURI = URL.createObjectURL( blob );
				return sourceURI;

} );

} else if ( sourceDef.uri === undefined ) {

throw new Error( 'THREE.GLTFLoader: Image ' + sourceIndex + ' is missing URI and bufferView' );

}

const promise = Promise.resolve( sourceURI ).then( function ( sourceURI ) {

return new Promise( function ( resolve, reject ) {

let onLoad = resolve;

if ( loader.isImageBitmapLoader === true ) {

onLoad = function ( imageBitmap ) {

const texture = new three__WEBPACK_IMPORTED_MODULE_0__.Texture( imageBitmap );
						texture.needsUpdate = true;

resolve( texture );

};

}

loader.load( three__WEBPACK_IMPORTED_MODULE_0__.LoaderUtils.resolveURL( sourceURI, options.path ), onLoad, undefined, reject );

} );

} ).then( function ( texture ) {

// Clean up resources and configure Texture.

if ( isObjectURL === true ) {

URL.revokeObjectURL( sourceURI );

}

texture.userData.mimeType = sourceDef.mimeType || getImageURIMimeType( sourceDef.uri );

return texture;

} ).catch( function ( error ) {

console.error( 'THREE.GLTFLoader: Couldn\'t load texture', sourceURI );
			throw error;

} );

this.sourceCache[ sourceIndex ] = promise;
		return promise;

}

/**
	 * Asynchronously assigns a texture to the given material parameters.
	 * @param {Object} materialParams
	 * @param {string} mapName
	 * @param {Object} mapDef
	 * @return {Promise<Texture>}
	 */
	assignTexture( materialParams, mapName, mapDef, encoding ) {

const parser = this;

return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {

if ( ! texture ) return null;

if ( mapDef.texCoord !== undefined && mapDef.texCoord > 0 ) {

texture = texture.clone();
				texture.channel = mapDef.texCoord;

}

if ( parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] ) {

const transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;

if ( transform ) {

const gltfReference = parser.associations.get( texture );
					texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
					parser.associations.set( texture, gltfReference );

}

if ( encoding !== undefined ) {

texture.encoding = encoding;

}

materialParams[ mapName ] = texture;

return texture;

} );

}

/**
	 * Assigns final material to a Mesh, Line, or Points instance. The instance
	 * already has a material (generated from the glTF material options alone)
	 * but reuse of the same glTF material may require multiple threejs materials
	 * to accommodate different primitive types, defines, etc. New materials will
	 * be created if necessary, and reused from a cache.
	 * @param  {Object3D} mesh Mesh, Line, or Points instance.
	 */
	assignFinalMaterial( mesh ) {

const geometry = mesh.geometry;
		let material = mesh.material;

const useDerivativeTangents = geometry.attributes.tangent === undefined;
		const useVertexColors = geometry.attributes.color !== undefined;
		const useFlatShading = geometry.attributes.normal === undefined;

if ( mesh.isPoints ) {

const cacheKey = 'PointsMaterial:' + material.uuid;

let pointsMaterial = this.cache.get( cacheKey );

if ( ! pointsMaterial ) {

pointsMaterial = new three__WEBPACK_IMPORTED_MODULE_0__.PointsMaterial();
				three__WEBPACK_IMPORTED_MODULE_0__.Material.prototype.copy.call( pointsMaterial, material );
				pointsMaterial.color.copy( material.color );
				pointsMaterial.map = material.map;
				pointsMaterial.sizeAttenuation = false; // glTF spec says points should be 1px

this.cache.add( cacheKey, pointsMaterial );

}

material = pointsMaterial;

} else if ( mesh.isLine ) {

const cacheKey = 'LineBasicMaterial:' + material.uuid;

let lineMaterial = this.cache.get( cacheKey );

if ( ! lineMaterial ) {

lineMaterial = new three__WEBPACK_IMPORTED_MODULE_0__.LineBasicMaterial();
				three__WEBPACK_IMPORTED_MODULE_0__.Material.prototype.copy.call( lineMaterial, material );
				lineMaterial.color.copy( material.color );
				lineMaterial.map = material.map;

this.cache.add( cacheKey, lineMaterial );

}

material = lineMaterial;

}

// Clone the material if it will be modified
		if ( useDerivativeTangents || useVertexColors || useFlatShading ) {

let cacheKey = 'ClonedMaterial:' + material.uuid + ':';

if ( useDerivativeTangents ) cacheKey += 'derivative-tangents:';
			if ( useVertexColors ) cacheKey += 'vertex-colors:';
			if ( useFlatShading ) cacheKey += 'flat-shading:';

let cachedMaterial = this.cache.get( cacheKey );

if ( ! cachedMaterial ) {

cachedMaterial = material.clone();

if ( useVertexColors ) cachedMaterial.vertexColors = true;
				if ( useFlatShading ) cachedMaterial.flatShading = true;

if ( useDerivativeTangents ) {

// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
					if ( cachedMaterial.normalScale ) cachedMaterial.normalScale.y *= - 1;
					if ( cachedMaterial.clearcoatNormalScale ) cachedMaterial.clearcoatNormalScale.y *= - 1;

}

this.cache.add( cacheKey, cachedMaterial );

this.associations.set( cachedMaterial, this.associations.get( material ) );

}

material = cachedMaterial;

}

mesh.material = material;

}

getMaterialType( /* materialIndex */ ) {

return three__WEBPACK_IMPORTED_MODULE_0__.MeshStandardMaterial;

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
	 * @param {number} materialIndex
	 * @return {Promise<Material>}
	 */
	loadMaterial( materialIndex ) {

const parser = this;
		const json = this.json;
		const extensions = this.extensions;
		const materialDef = json.materials[ materialIndex ];

let materialType;
		const materialParams = {};
		const materialExtensions = materialDef.extensions || {};

const pending = [];

if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {

const kmuExtension = extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ];
			materialType = kmuExtension.getMaterialType();
			pending.push( kmuExtension.extendParams( materialParams, materialDef, parser ) );

} else {

// Specification:
			// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material

const metallicRoughness = materialDef.pbrMetallicRoughness || {};

materialParams.color = new three__WEBPACK_IMPORTED_MODULE_0__.Color( 1.0, 1.0, 1.0 );
			materialParams.opacity = 1.0;

if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {

const array = metallicRoughness.baseColorFactor;

materialParams.color.fromArray( array );
				materialParams.opacity = array[ 3 ];

}

if ( metallicRoughness.baseColorTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture, three__WEBPACK_IMPORTED_MODULE_0__.sRGBEncoding ) );

}

materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
			materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;

if ( metallicRoughness.metallicRoughnessTexture !== undefined ) {

pending.push( parser.assignTexture( materialParams, 'metalnessMap', metallicRoughness.metallicRoughnessTexture ) );
				pending.push( parser.assignTexture( materialParams, 'roughnessMap', metallicRoughness.metallicRoughnessTexture ) );

}

materialType = this._invokeOne( function ( ext ) {

return ext.getMaterialType && ext.getMaterialType( materialIndex );

} );

pending.push( Promise.all( this._invokeAll( function ( ext ) {

return ext.extendMaterialParams && ext.extendMaterialParams( materialIndex, materialParams );

} ) ) );

}

if ( materialDef.doubleSided === true ) {

materialParams.side = three__WEBPACK_IMPORTED_MODULE_0__.DoubleSide;

}

const alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;

if ( alphaMode === ALPHA_MODES.BLEND ) {

materialParams.transparent = true;

// See: https://github.com/mrdoob/three.js/issues/17706
			materialParams.depthWrite = false;

} else {

materialParams.transparent = false;

if ( alphaMode === ALPHA_MODES.MASK ) {

materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;

}

if ( materialDef.normalTexture !== undefined && materialType !== three__WEBPACK_IMPORTED_MODULE_0__.MeshBasicMaterial ) {

pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture ) );

materialParams.normalScale = new three__WEBPACK_IMPORTED_MODULE_0__.Vector2( 1, 1 );

if ( materialDef.normalTexture.scale !== undefined ) {

const scale = materialDef.normalTexture.scale;

materialParams.normalScale.set( scale, scale );

}

if ( materialDef.occlusionTexture !== undefined && materialType !== three__WEBPACK_IMPORTED_MODULE_0__.MeshBasicMaterial ) {

pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture ) );

if ( materialDef.occlusionTexture.strength !== undefined ) {

materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;

}

if ( materialDef.emissiveFactor !== undefined && materialType !== three__WEBPACK_IMPORTED_MODULE_0__.MeshBasicMaterial ) {

materialParams.emissive = new three__WEBPACK_IMPORTED_MODULE_0__.Color().fromArray( materialDef.emissiveFactor );

}

if ( materialDef.emissiveTexture !== undefined && materialType !== three__WEBPACK_IMPORTED_MODULE_0__.MeshBasicMaterial ) {

pending.push( parser.assignTexture( materialParams, 'emissiveMap', materialDef.emissiveTexture, three__WEBPACK_IMPORTED_MODULE_0__.sRGBEncoding ) );

}

return Promise.all( pending ).then( function () {

const material = new materialType( materialParams );

if ( materialDef.name ) material.name = materialDef.name;

assignExtrasToUserData( material, materialDef );

parser.associations.set( material, { materials: materialIndex } );

if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );

return material;

} );

}

/** When Object3D instances are targeted by animation, they need unique names. */
	createUniqueName( originalName ) {

const sanitizedName = three__WEBPACK_IMPORTED_MODULE_0__.PropertyBinding.sanitizeNodeName( originalName || '' );

let name = sanitizedName;

for ( let i = 1; this.nodeNamesUsed[ name ]; ++ i ) {

name = sanitizedName + '_' + i;

}

this.nodeNamesUsed[ name ] = true;

return name;

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
	 *
	 * Creates BufferGeometries from primitives.
	 *
	 * @param {Array<GLTF.Primitive>} primitives
	 * @return {Promise<Array<BufferGeometry>>}
	 */
	loadGeometries( primitives ) {

const parser = this;
		const extensions = this.extensions;
		const cache = this.primitiveCache;

function createDracoPrimitive( primitive ) {

return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
				.decodePrimitive( primitive, parser )
				.then( function ( geometry ) {

return addPrimitiveAttributes( geometry, primitive, parser );

} );

}

const pending = [];

for ( let i = 0, il = primitives.length; i < il; i ++ ) {

const primitive = primitives[ i ];
			const cacheKey = createPrimitiveKey( primitive );

// See if we've already created this geometry
			const cached = cache[ cacheKey ];

if ( cached ) {

// Use the cached geometry if it exists
				pending.push( cached.promise );

} else {

let geometryPromise;

if ( primitive.extensions && primitive.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ] ) {

// Use DRACO geometry if available
					geometryPromise = createDracoPrimitive( primitive );

} else {

// Otherwise create a new geometry
					geometryPromise = addPrimitiveAttributes( new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry(), primitive, parser );

}

// Cache this geometry
				cache[ cacheKey ] = { primitive: primitive, promise: geometryPromise };

pending.push( geometryPromise );

}

return Promise.all( pending );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
	 * @param {number} meshIndex
	 * @return {Promise<Group|Mesh|SkinnedMesh>}
	 */
	loadMesh( meshIndex ) {

const parser = this;
		const json = this.json;
		const extensions = this.extensions;

const meshDef = json.meshes[ meshIndex ];
		const primitives = meshDef.primitives;

const pending = [];

for ( let i = 0, il = primitives.length; i < il; i ++ ) {

const material = primitives[ i ].material === undefined
				? createDefaultMaterial( this.cache )
				: this.getDependency( 'material', primitives[ i ].material );

pending.push( material );

}

pending.push( parser.loadGeometries( primitives ) );

return Promise.all( pending ).then( function ( results ) {

const materials = results.slice( 0, results.length - 1 );
			const geometries = results[ results.length - 1 ];

const meshes = [];

for ( let i = 0, il = geometries.length; i < il; i ++ ) {

const geometry = geometries[ i ];
				const primitive = primitives[ i ];

// 1. create Mesh

let mesh;

const material = materials[ i ];

if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES ||
						primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ||
						primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ||
						primitive.mode === undefined ) {

// .isSkinnedMesh isn't in glTF spec. See ._markDefs()
					mesh = meshDef.isSkinnedMesh === true
						? new three__WEBPACK_IMPORTED_MODULE_0__.SkinnedMesh( geometry, material )
						: new three__WEBPACK_IMPORTED_MODULE_0__.Mesh( geometry, material );

if ( mesh.isSkinnedMesh === true ) {

// normalize skin weights to fix malformed assets (see #15319)
						mesh.normalizeSkinWeights();

}

if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ) {

mesh.geometry = (0,_utils_BufferGeometryUtils_js__WEBPACK_IMPORTED_MODULE_1__.toTrianglesDrawMode)( mesh.geometry, three__WEBPACK_IMPORTED_MODULE_0__.TriangleStripDrawMode );

} else if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ) {

mesh.geometry = (0,_utils_BufferGeometryUtils_js__WEBPACK_IMPORTED_MODULE_1__.toTrianglesDrawMode)( mesh.geometry, three__WEBPACK_IMPORTED_MODULE_0__.TriangleFanDrawMode );

}

} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {

mesh = new three__WEBPACK_IMPORTED_MODULE_0__.LineSegments( geometry, material );

} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ) {

mesh = new three__WEBPACK_IMPORTED_MODULE_0__.Line( geometry, material );

} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {

mesh = new three__WEBPACK_IMPORTED_MODULE_0__.LineLoop( geometry, material );

} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {

mesh = new three__WEBPACK_IMPORTED_MODULE_0__.Points( geometry, material );

} else {

throw new Error( 'THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode );

}

if ( Object.keys( mesh.geometry.morphAttributes ).length > 0 ) {

updateMorphTargets( mesh, meshDef );

}

mesh.name = parser.createUniqueName( meshDef.name || ( 'mesh_' + meshIndex ) );

assignExtrasToUserData( mesh, meshDef );

if ( primitive.extensions ) addUnknownExtensionsToUserData( extensions, mesh, primitive );

parser.assignFinalMaterial( mesh );

meshes.push( mesh );

}

for ( let i = 0, il = meshes.length; i < il; i ++ ) {

parser.associations.set( meshes[ i ], {
					meshes: meshIndex,
					primitives: i
				} );

}

if ( meshes.length === 1 ) {

return meshes[ 0 ];

}

const group = new three__WEBPACK_IMPORTED_MODULE_0__.Group();

parser.associations.set( group, { meshes: meshIndex } );

for ( let i = 0, il = meshes.length; i < il; i ++ ) {

group.add( meshes[ i ] );

}

return group;

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
	 * @param {number} cameraIndex
	 * @return {Promise<THREE.Camera>}
	 */
	loadCamera( cameraIndex ) {

let camera;
		const cameraDef = this.json.cameras[ cameraIndex ];
		const params = cameraDef[ cameraDef.type ];

if ( ! params ) {

console.warn( 'THREE.GLTFLoader: Missing camera parameters.' );
			return;

}

if ( cameraDef.type === 'perspective' ) {

camera = new three__WEBPACK_IMPORTED_MODULE_0__.PerspectiveCamera( three__WEBPACK_IMPORTED_MODULE_0__.MathUtils.radToDeg( params.yfov ), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6 );

} else if ( cameraDef.type === 'orthographic' ) {

camera = new three__WEBPACK_IMPORTED_MODULE_0__.OrthographicCamera( - params.xmag, params.xmag, params.ymag, - params.ymag, params.znear, params.zfar );

}

if ( cameraDef.name ) camera.name = this.createUniqueName( cameraDef.name );

assignExtrasToUserData( camera, cameraDef );

return Promise.resolve( camera );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
	 * @param {number} skinIndex
	 * @return {Promise<Skeleton>}
	 */
	loadSkin( skinIndex ) {

const skinDef = this.json.skins[ skinIndex ];

const pending = [];

for ( let i = 0, il = skinDef.joints.length; i < il; i ++ ) {

pending.push( this._loadNodeShallow( skinDef.joints[ i ] ) );

}

if ( skinDef.inverseBindMatrices !== undefined ) {

pending.push( this.getDependency( 'accessor', skinDef.inverseBindMatrices ) );

} else {

pending.push( null );

}

return Promise.all( pending ).then( function ( results ) {

const inverseBindMatrices = results.pop();
			const jointNodes = results;

// Note that bones (joint nodes) may or may not be in the
			// scene graph at this time.

const bones = [];
			const boneInverses = [];

for ( let i = 0, il = jointNodes.length; i < il; i ++ ) {

const jointNode = jointNodes[ i ];

if ( jointNode ) {

bones.push( jointNode );

const mat = new three__WEBPACK_IMPORTED_MODULE_0__.Matrix4();

if ( inverseBindMatrices !== null ) {

mat.fromArray( inverseBindMatrices.array, i * 16 );

}

boneInverses.push( mat );

} else {

console.warn( 'THREE.GLTFLoader: Joint "%s" could not be found.', skinDef.joints[ i ] );

}

return new three__WEBPACK_IMPORTED_MODULE_0__.Skeleton( bones, boneInverses );

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
	 * @param {number} animationIndex
	 * @return {Promise<AnimationClip>}
	 */
	loadAnimation( animationIndex ) {

const json = this.json;

const animationDef = json.animations[ animationIndex ];
		const animationName = animationDef.name ? animationDef.name : 'animation_' + animationIndex;

const pendingNodes = [];
		const pendingInputAccessors = [];
		const pendingOutputAccessors = [];
		const pendingSamplers = [];
		const pendingTargets = [];

for ( let i = 0, il = animationDef.channels.length; i < il; i ++ ) {

const channel = animationDef.channels[ i ];
			const sampler = animationDef.samplers[ channel.sampler ];
			const target = channel.target;
			const name = target.node;
			const input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
			const output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;

if ( target.node === undefined ) continue;

pendingNodes.push( this.getDependency( 'node', name ) );
			pendingInputAccessors.push( this.getDependency( 'accessor', input ) );
			pendingOutputAccessors.push( this.getDependency( 'accessor', output ) );
			pendingSamplers.push( sampler );
			pendingTargets.push( target );

}

return Promise.all( [

Promise.all( pendingNodes ),
			Promise.all( pendingInputAccessors ),
			Promise.all( pendingOutputAccessors ),
			Promise.all( pendingSamplers ),
			Promise.all( pendingTargets )

] ).then( function ( dependencies ) {

const nodes = dependencies[ 0 ];
			const inputAccessors = dependencies[ 1 ];
			const outputAccessors = dependencies[ 2 ];
			const samplers = dependencies[ 3 ];
			const targets = dependencies[ 4 ];

const tracks = [];

for ( let i = 0, il = nodes.length; i < il; i ++ ) {

const node = nodes[ i ];
				const inputAccessor = inputAccessors[ i ];
				const outputAccessor = outputAccessors[ i ];
				const sampler = samplers[ i ];
				const target = targets[ i ];

if ( node === undefined ) continue;

node.updateMatrix();

let TypedKeyframeTrack;

switch ( PATH_PROPERTIES[ target.path ] ) {

case PATH_PROPERTIES.weights:

TypedKeyframeTrack = three__WEBPACK_IMPORTED_MODULE_0__.NumberKeyframeTrack;
						break;

case PATH_PROPERTIES.rotation:

TypedKeyframeTrack = three__WEBPACK_IMPORTED_MODULE_0__.QuaternionKeyframeTrack;
						break;

case PATH_PROPERTIES.position:
					case PATH_PROPERTIES.scale:
					default:

TypedKeyframeTrack = three__WEBPACK_IMPORTED_MODULE_0__.VectorKeyframeTrack;
						break;

}

const targetName = node.name ? node.name : node.uuid;

const interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : three__WEBPACK_IMPORTED_MODULE_0__.InterpolateLinear;

const targetNames = [];

if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {

node.traverse( function ( object ) {

if ( object.morphTargetInfluences ) {

targetNames.push( object.name ? object.name : object.uuid );

}

} );

} else {

targetNames.push( targetName );

}

let outputArray = outputAccessor.array;

if ( outputAccessor.normalized ) {

const scale = getNormalizedComponentScale( outputArray.constructor );
					const scaled = new Float32Array( outputArray.length );

for ( let j = 0, jl = outputArray.length; j < jl; j ++ ) {

scaled[ j ] = outputArray[ j ] * scale;

}

outputArray = scaled;

}

for ( let j = 0, jl = targetNames.length; j < jl; j ++ ) {

const track = new TypedKeyframeTrack(
						targetNames[ j ] + '.' + PATH_PROPERTIES[ target.path ],
						inputAccessor.array,
						outputArray,
						interpolation
					);

// Override interpolation with custom factory method.
					if ( sampler.interpolation === 'CUBICSPLINE' ) {

track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline( result ) {

// A CUBICSPLINE keyframe in glTF has three output values for each input value,
							// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
							// must be divided by three to get the interpolant's sampleSize argument.

const interpolantType = ( this instanceof three__WEBPACK_IMPORTED_MODULE_0__.QuaternionKeyframeTrack ) ? GLTFCubicSplineQuaternionInterpolant : GLTFCubicSplineInterpolant;

return new interpolantType( this.times, this.values, this.getValueSize() / 3, result );

};

// Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.
						track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;

}

tracks.push( track );

}

return new three__WEBPACK_IMPORTED_MODULE_0__.AnimationClip( animationName, undefined, tracks );

} );

}

createNodeMesh( nodeIndex ) {

const json = this.json;
		const parser = this;
		const nodeDef = json.nodes[ nodeIndex ];

if ( nodeDef.mesh === undefined ) return null;

return parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {

const node = parser._getNodeRef( parser.meshCache, nodeDef.mesh, mesh );

// if weights are provided on the node, override weights on the mesh.
			if ( nodeDef.weights !== undefined ) {

node.traverse( function ( o ) {

if ( ! o.isMesh ) return;

for ( let i = 0, il = nodeDef.weights.length; i < il; i ++ ) {

o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];

}

} );

}

return node;

} );

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
	 * @param {number} nodeIndex
	 * @return {Promise<Object3D>}
	 */
	loadNode( nodeIndex ) {

const json = this.json;
		const parser = this;

const nodeDef = json.nodes[ nodeIndex ];

const nodePending = parser._loadNodeShallow( nodeIndex );

const childPending = [];
		const childrenDef = nodeDef.children || [];

for ( let i = 0, il = childrenDef.length; i < il; i ++ ) {

childPending.push( parser.getDependency( 'node', childrenDef[ i ] ) );

}

const skeletonPending = nodeDef.skin === undefined
			? Promise.resolve( null )
			: parser.getDependency( 'skin', nodeDef.skin );

return Promise.all( [
			nodePending,
			Promise.all( childPending ),
			skeletonPending
		] ).then( function ( results ) {

const node = results[ 0 ];
			const children = results[ 1 ];
			const skeleton = results[ 2 ];

if ( skeleton !== null ) {

// This full traverse should be fine because
				// child glTF nodes have not been added to this node yet.
				node.traverse( function ( mesh ) {

if ( ! mesh.isSkinnedMesh ) return;

mesh.bind( skeleton, _identityMatrix );

} );

}

for ( let i = 0, il = children.length; i < il; i ++ ) {

node.add( children[ i ] );

}

return node;

} );

}

// ._loadNodeShallow() parses a single node.
	// skin and child nodes are created and added in .loadNode() (no '_' prefix).
	_loadNodeShallow( nodeIndex ) {

const json = this.json;
		const extensions = this.extensions;
		const parser = this;

// This method is called from .loadNode() and .loadSkin().
		// Cache a node to avoid duplication.

if ( this.nodeCache[ nodeIndex ] !== undefined ) {

return this.nodeCache[ nodeIndex ];

}

const nodeDef = json.nodes[ nodeIndex ];

// reserve node's name before its dependencies, so the root has the intended name.
		const nodeName = nodeDef.name ? parser.createUniqueName( nodeDef.name ) : '';

const pending = [];

const meshPromise = parser._invokeOne( function ( ext ) {

return ext.createNodeMesh && ext.createNodeMesh( nodeIndex );

} );

if ( meshPromise ) {

pending.push( meshPromise );

}

if ( nodeDef.camera !== undefined ) {

pending.push( parser.getDependency( 'camera', nodeDef.camera ).then( function ( camera ) {

return parser._getNodeRef( parser.cameraCache, nodeDef.camera, camera );

} ) );

}

parser._invokeAll( function ( ext ) {

return ext.createNodeAttachment && ext.createNodeAttachment( nodeIndex );

} ).forEach( function ( promise ) {

pending.push( promise );

} );

this.nodeCache[ nodeIndex ] = Promise.all( pending ).then( function ( objects ) {

let node;

// .isBone isn't in glTF spec. See ._markDefs
			if ( nodeDef.isBone === true ) {

node = new three__WEBPACK_IMPORTED_MODULE_0__.Bone();

} else if ( objects.length > 1 ) {

node = new three__WEBPACK_IMPORTED_MODULE_0__.Group();

} else if ( objects.length === 1 ) {

node = objects[ 0 ];

} else {

node = new three__WEBPACK_IMPORTED_MODULE_0__.Object3D();

}

if ( node !== objects[ 0 ] ) {

for ( let i = 0, il = objects.length; i < il; i ++ ) {

node.add( objects[ i ] );

}

if ( nodeDef.name ) {

node.userData.name = nodeDef.name;
				node.name = nodeName;

}

assignExtrasToUserData( node, nodeDef );

if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );

if ( nodeDef.matrix !== undefined ) {

const matrix = new three__WEBPACK_IMPORTED_MODULE_0__.Matrix4();
				matrix.fromArray( nodeDef.matrix );
				node.applyMatrix4( matrix );

} else {

if ( nodeDef.translation !== undefined ) {

node.position.fromArray( nodeDef.translation );

}

if ( nodeDef.rotation !== undefined ) {

node.quaternion.fromArray( nodeDef.rotation );

}

if ( nodeDef.scale !== undefined ) {

node.scale.fromArray( nodeDef.scale );

}

if ( ! parser.associations.has( node ) ) {

parser.associations.set( node, {} );

}

parser.associations.get( node ).nodes = nodeIndex;

return node;

} );

return this.nodeCache[ nodeIndex ];

}

/**
	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
	 * @param {number} sceneIndex
	 * @return {Promise<Group>}
	 */
	loadScene( sceneIndex ) {

const extensions = this.extensions;
		const sceneDef = this.json.scenes[ sceneIndex ];
		const parser = this;

// Loader returns Group, not Scene.
		// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
		const scene = new three__WEBPACK_IMPORTED_MODULE_0__.Group();
		if ( sceneDef.name ) scene.name = parser.createUniqueName( sceneDef.name );

assignExtrasToUserData( scene, sceneDef );

if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );

const nodeIds = sceneDef.nodes || [];

const pending = [];

for ( let i = 0, il = nodeIds.length; i < il; i ++ ) {

pending.push( parser.getDependency( 'node', nodeIds[ i ] ) );

}

return Promise.all( pending ).then( function ( nodes ) {

for ( let i = 0, il = nodes.length; i < il; i ++ ) {

scene.add( nodes[ i ] );

}

// Removes dangling associations, associations that reference a node that
			// didn't make it into the scene.
			const reduceAssociations = ( node ) => {

const reducedAssociations = new Map();

for ( const [ key, value ] of parser.associations ) {

if ( key instanceof three__WEBPACK_IMPORTED_MODULE_0__.Material || key instanceof three__WEBPACK_IMPORTED_MODULE_0__.Texture ) {

reducedAssociations.set( key, value );

}

node.traverse( ( node ) => {

const mappings = parser.associations.get( node );

if ( mappings != null ) {

reducedAssociations.set( node, mappings );

}

} );

return reducedAssociations;

};

parser.associations = reduceAssociations( scene );

return scene;

} );

}

/**
 * @param {BufferGeometry} geometry
 * @param {GLTF.Primitive} primitiveDef
 * @param {GLTFParser} parser
 */
function computeBounds( geometry, primitiveDef, parser ) {

const attributes = primitiveDef.attributes;

const box = new three__WEBPACK_IMPORTED_MODULE_0__.Box3();

if ( attributes.POSITION !== undefined ) {

const accessor = parser.json.accessors[ attributes.POSITION ];

const min = accessor.min;
		const max = accessor.max;

// glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.

if ( min !== undefined && max !== undefined ) {

box.set(
				new three__WEBPACK_IMPORTED_MODULE_0__.Vector3( min[ 0 ], min[ 1 ], min[ 2 ] ),
				new three__WEBPACK_IMPORTED_MODULE_0__.Vector3( max[ 0 ], max[ 1 ], max[ 2 ] )
			);

if ( accessor.normalized ) {

const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
				box.min.multiplyScalar( boxScale );
				box.max.multiplyScalar( boxScale );

}

} else {

console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );

return;

}

} else {

return;

}

const targets = primitiveDef.targets;

if ( targets !== undefined ) {

const maxDisplacement = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
		const vector = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

for ( let i = 0, il = targets.length; i < il; i ++ ) {

const target = targets[ i ];

if ( target.POSITION !== undefined ) {

const accessor = parser.json.accessors[ target.POSITION ];
				const min = accessor.min;
				const max = accessor.max;

// glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.

if ( min !== undefined && max !== undefined ) {

// we need to get max of absolute components because target weight is [-1,1]
					vector.setX( Math.max( Math.abs( min[ 0 ] ), Math.abs( max[ 0 ] ) ) );
					vector.setY( Math.max( Math.abs( min[ 1 ] ), Math.abs( max[ 1 ] ) ) );
					vector.setZ( Math.max( Math.abs( min[ 2 ] ), Math.abs( max[ 2 ] ) ) );

if ( accessor.normalized ) {

const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
						vector.multiplyScalar( boxScale );

}

// Note: this assumes that the sum of all weights is at most 1. This isn't quite correct - it's more conservative
					// to assume that each target can have a max weight of 1. However, for some use cases - notably, when morph targets
					// are used to implement key-frame animations and as such only two are active at a time - this results in very large
					// boxes. So for now we make a box that's sometimes a touch too small but is hopefully mostly of reasonable size.
					maxDisplacement.max( vector );

} else {

console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );

}

// As per comment above this box isn't conservative, but has a reasonable size for a very large number of morph targets.
		box.expandByVector( maxDisplacement );

}

geometry.boundingBox = box;

const sphere = new three__WEBPACK_IMPORTED_MODULE_0__.Sphere();

box.getCenter( sphere.center );
	sphere.radius = box.min.distanceTo( box.max ) / 2;

geometry.boundingSphere = sphere;

}

/**
 * @param {BufferGeometry} geometry
 * @param {GLTF.Primitive} primitiveDef
 * @param {GLTFParser} parser
 * @return {Promise<BufferGeometry>}
 */
function addPrimitiveAttributes( geometry, primitiveDef, parser ) {

const attributes = primitiveDef.attributes;

const pending = [];

function assignAttributeAccessor( accessorIndex, attributeName ) {

return parser.getDependency( 'accessor', accessorIndex )
			.then( function ( accessor ) {

geometry.setAttribute( attributeName, accessor );

} );

}

for ( const gltfAttributeName in attributes ) {

const threeAttributeName = ATTRIBUTES[ gltfAttributeName ] || gltfAttributeName.toLowerCase();

// Skip attributes already provided by e.g. Draco extension.
		if ( threeAttributeName in geometry.attributes ) continue;

pending.push( assignAttributeAccessor( attributes[ gltfAttributeName ], threeAttributeName ) );

}

if ( primitiveDef.indices !== undefined && ! geometry.index ) {

const accessor = parser.getDependency( 'accessor', primitiveDef.indices ).then( function ( accessor ) {

geometry.setIndex( accessor );

} );

pending.push( accessor );

}

assignExtrasToUserData( geometry, primitiveDef );

computeBounds( geometry, primitiveDef, parser );

return Promise.all( pending ).then( function () {

return primitiveDef.targets !== undefined
			? addMorphTargets( geometry, primitiveDef.targets, parser )
			: geometry;

} );

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/EffectComposer.js":
/*!**************************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/EffectComposer.js ***!
  \**************************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "EffectComposer": () => (/* binding */ EffectComposer)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var _shaders_CopyShader_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../shaders/CopyShader.js */ "./node_modules/three/examples/jsm/shaders/CopyShader.js");
/* harmony import */ var _ShaderPass_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./ShaderPass.js */ "./node_modules/three/examples/jsm/postprocessing/ShaderPass.js");
/* harmony import */ var _MaskPass_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./MaskPass.js */ "./node_modules/three/examples/jsm/postprocessing/MaskPass.js");

class EffectComposer {

constructor( renderer, renderTarget ) {

this.renderer = renderer;

if ( renderTarget === undefined ) {

const size = renderer.getSize( new three__WEBPACK_IMPORTED_MODULE_0__.Vector2() );
			this._pixelRatio = renderer.getPixelRatio();
			this._width = size.width;
			this._height = size.height;

renderTarget = new three__WEBPACK_IMPORTED_MODULE_0__.WebGLRenderTarget( this._width * this._pixelRatio, this._height * this._pixelRatio );
			renderTarget.texture.name = 'EffectComposer.rt1';

} else {

this._pixelRatio = 1;
			this._width = renderTarget.width;
			this._height = renderTarget.height;

}

this.renderTarget1 = renderTarget;
		this.renderTarget2 = renderTarget.clone();
		this.renderTarget2.texture.name = 'EffectComposer.rt2';

this.writeBuffer = this.renderTarget1;
		this.readBuffer = this.renderTarget2;

this.renderToScreen = true;

this.passes = [];

this.copyPass = new _ShaderPass_js__WEBPACK_IMPORTED_MODULE_1__.ShaderPass( _shaders_CopyShader_js__WEBPACK_IMPORTED_MODULE_2__.CopyShader );

this.clock = new three__WEBPACK_IMPORTED_MODULE_0__.Clock();

}

swapBuffers() {

const tmp = this.readBuffer;
		this.readBuffer = this.writeBuffer;
		this.writeBuffer = tmp;

}

addPass( pass ) {

this.passes.push( pass );
		pass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );

}

insertPass( pass, index ) {

this.passes.splice( index, 0, pass );
		pass.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );

}

removePass( pass ) {

const index = this.passes.indexOf( pass );

if ( index !== - 1 ) {

this.passes.splice( index, 1 );

}

isLastEnabledPass( passIndex ) {

for ( let i = passIndex + 1; i < this.passes.length; i ++ ) {

if ( this.passes[ i ].enabled ) {

return false;

}

return true;

}

render( deltaTime ) {

// deltaTime value is in seconds

if ( deltaTime === undefined ) {

deltaTime = this.clock.getDelta();

}

const currentRenderTarget = this.renderer.getRenderTarget();

let maskActive = false;

for ( let i = 0, il = this.passes.length; i < il; i ++ ) {

const pass = this.passes[ i ];

if ( pass.enabled === false ) continue;

pass.renderToScreen = ( this.renderToScreen && this.isLastEnabledPass( i ) );
			pass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime, maskActive );

if ( pass.needsSwap ) {

if ( maskActive ) {

const context = this.renderer.getContext();
					const stencil = this.renderer.state.buffers.stencil;

//context.stencilFunc( context.NOTEQUAL, 1, 0xffffffff );
					stencil.setFunc( context.NOTEQUAL, 1, 0xffffffff );

this.copyPass.render( this.renderer, this.writeBuffer, this.readBuffer, deltaTime );

//context.stencilFunc( context.EQUAL, 1, 0xffffffff );
					stencil.setFunc( context.EQUAL, 1, 0xffffffff );

}

this.swapBuffers();

}

if ( _MaskPass_js__WEBPACK_IMPORTED_MODULE_3__.MaskPass !== undefined ) {

if ( pass instanceof _MaskPass_js__WEBPACK_IMPORTED_MODULE_3__.MaskPass ) {

maskActive = true;

} else if ( pass instanceof _MaskPass_js__WEBPACK_IMPORTED_MODULE_3__.ClearMaskPass ) {

maskActive = false;

}

this.renderer.setRenderTarget( currentRenderTarget );

}

reset( renderTarget ) {

if ( renderTarget === undefined ) {

const size = this.renderer.getSize( new three__WEBPACK_IMPORTED_MODULE_0__.Vector2() );
			this._pixelRatio = this.renderer.getPixelRatio();
			this._width = size.width;
			this._height = size.height;

renderTarget = this.renderTarget1.clone();
			renderTarget.setSize( this._width * this._pixelRatio, this._height * this._pixelRatio );

}

this.renderTarget1.dispose();
		this.renderTarget2.dispose();
		this.renderTarget1 = renderTarget;
		this.renderTarget2 = renderTarget.clone();

this.writeBuffer = this.renderTarget1;
		this.readBuffer = this.renderTarget2;

}

setSize( width, height ) {

this._width = width;
		this._height = height;

const effectiveWidth = this._width * this._pixelRatio;
		const effectiveHeight = this._height * this._pixelRatio;

this.renderTarget1.setSize( effectiveWidth, effectiveHeight );
		this.renderTarget2.setSize( effectiveWidth, effectiveHeight );

for ( let i = 0; i < this.passes.length; i ++ ) {

this.passes[ i ].setSize( effectiveWidth, effectiveHeight );

}

setPixelRatio( pixelRatio ) {

this._pixelRatio = pixelRatio;

this.setSize( this._width, this._height );

}

dispose() {

this.renderTarget1.dispose();
		this.renderTarget2.dispose();

this.copyPass.dispose();

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/MaskPass.js":
/*!********************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/MaskPass.js ***!
  \********************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "ClearMaskPass": () => (/* binding */ ClearMaskPass),
/* harmony export */   "MaskPass": () => (/* binding */ MaskPass)
/* harmony export */ });
/* harmony import */ var _Pass_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./Pass.js */ "./node_modules/three/examples/jsm/postprocessing/Pass.js");

class MaskPass extends _Pass_js__WEBPACK_IMPORTED_MODULE_0__.Pass {

constructor( scene, camera ) {

super();

this.scene = scene;
		this.camera = camera;

this.clear = true;
		this.needsSwap = false;

this.inverse = false;

}

render( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {

const context = renderer.getContext();
		const state = renderer.state;

// don't update color or depth

state.buffers.color.setMask( false );
		state.buffers.depth.setMask( false );

// lock buffers

state.buffers.color.setLocked( true );
		state.buffers.depth.setLocked( true );

// set up stencil

let writeValue, clearValue;

if ( this.inverse ) {

writeValue = 0;
			clearValue = 1;

} else {

writeValue = 1;
			clearValue = 0;

}

state.buffers.stencil.setTest( true );
		state.buffers.stencil.setOp( context.REPLACE, context.REPLACE, context.REPLACE );
		state.buffers.stencil.setFunc( context.ALWAYS, writeValue, 0xffffffff );
		state.buffers.stencil.setClear( clearValue );
		state.buffers.stencil.setLocked( true );

// draw into the stencil buffer

renderer.setRenderTarget( readBuffer );
		if ( this.clear ) renderer.clear();
		renderer.render( this.scene, this.camera );

renderer.setRenderTarget( writeBuffer );
		if ( this.clear ) renderer.clear();
		renderer.render( this.scene, this.camera );

// unlock color and depth buffer for subsequent rendering

state.buffers.color.setLocked( false );
		state.buffers.depth.setLocked( false );

// only render where stencil is set to 1

state.buffers.stencil.setLocked( false );
		state.buffers.stencil.setFunc( context.EQUAL, 1, 0xffffffff ); // draw if == 1
		state.buffers.stencil.setOp( context.KEEP, context.KEEP, context.KEEP );
		state.buffers.stencil.setLocked( true );

}

class ClearMaskPass extends _Pass_js__WEBPACK_IMPORTED_MODULE_0__.Pass {

constructor() {

super();

this.needsSwap = false;

}

render( renderer /*, writeBuffer, readBuffer, deltaTime, maskActive */ ) {

renderer.state.buffers.stencil.setLocked( false );
		renderer.state.buffers.stencil.setTest( false );

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/OutlinePass.js":
/*!***********************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/OutlinePass.js ***!
  \***********************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "OutlinePass": () => (/* binding */ OutlinePass)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var _Pass_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./Pass.js */ "./node_modules/three/examples/jsm/postprocessing/Pass.js");
/* harmony import */ var _shaders_CopyShader_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../shaders/CopyShader.js */ "./node_modules/three/examples/jsm/shaders/CopyShader.js");

class OutlinePass extends _Pass_js__WEBPACK_IMPORTED_MODULE_0__.Pass {

constructor( resolution, scene, camera, selectedObjects ) {

super();

this.renderScene = scene;
		this.renderCamera = camera;
		this.selectedObjects = selectedObjects !== undefined ? selectedObjects : [];
		this.visibleEdgeColor = new three__WEBPACK_IMPORTED_MODULE_1__.Color( 1, 1, 1 );
		this.hiddenEdgeColor = new three__WEBPACK_IMPORTED_MODULE_1__.Color( 0.1, 0.04, 0.02 );
		this.edgeGlow = 0.0;
		this.usePatternTexture = false;
		this.edgeThickness = 1.0;
		this.edgeStrength = 3.0;
		this.downSampleRatio = 2;
		this.pulsePeriod = 0;

this._visibilityCache = new Map();

this.resolution = ( resolution !== undefined ) ? new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( resolution.x, resolution.y ) : new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 256, 256 );

const resx = Math.round( this.resolution.x / this.downSampleRatio );
		const resy = Math.round( this.resolution.y / this.downSampleRatio );

this.renderTargetMaskBuffer = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( this.resolution.x, this.resolution.y );
		this.renderTargetMaskBuffer.texture.name = 'OutlinePass.mask';
		this.renderTargetMaskBuffer.texture.generateMipmaps = false;

this.depthMaterial = new three__WEBPACK_IMPORTED_MODULE_1__.MeshDepthMaterial();
		this.depthMaterial.side = three__WEBPACK_IMPORTED_MODULE_1__.DoubleSide;
		this.depthMaterial.depthPacking = three__WEBPACK_IMPORTED_MODULE_1__.RGBADepthPacking;
		this.depthMaterial.blending = three__WEBPACK_IMPORTED_MODULE_1__.NoBlending;

this.prepareMaskMaterial = this.getPrepareMaskMaterial();
		this.prepareMaskMaterial.side = three__WEBPACK_IMPORTED_MODULE_1__.DoubleSide;
		this.prepareMaskMaterial.fragmentShader = replaceDepthToViewZ( this.prepareMaskMaterial.fragmentShader, this.renderCamera );

this.renderTargetDepthBuffer = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( this.resolution.x, this.resolution.y );
		this.renderTargetDepthBuffer.texture.name = 'OutlinePass.depth';
		this.renderTargetDepthBuffer.texture.generateMipmaps = false;

this.renderTargetMaskDownSampleBuffer = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( resx, resy );
		this.renderTargetMaskDownSampleBuffer.texture.name = 'OutlinePass.depthDownSample';
		this.renderTargetMaskDownSampleBuffer.texture.generateMipmaps = false;

this.renderTargetBlurBuffer1 = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( resx, resy );
		this.renderTargetBlurBuffer1.texture.name = 'OutlinePass.blur1';
		this.renderTargetBlurBuffer1.texture.generateMipmaps = false;
		this.renderTargetBlurBuffer2 = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( Math.round( resx / 2 ), Math.round( resy / 2 ) );
		this.renderTargetBlurBuffer2.texture.name = 'OutlinePass.blur2';
		this.renderTargetBlurBuffer2.texture.generateMipmaps = false;

this.edgeDetectionMaterial = this.getEdgeDetectionMaterial();
		this.renderTargetEdgeBuffer1 = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( resx, resy );
		this.renderTargetEdgeBuffer1.texture.name = 'OutlinePass.edge1';
		this.renderTargetEdgeBuffer1.texture.generateMipmaps = false;
		this.renderTargetEdgeBuffer2 = new three__WEBPACK_IMPORTED_MODULE_1__.WebGLRenderTarget( Math.round( resx / 2 ), Math.round( resy / 2 ) );
		this.renderTargetEdgeBuffer2.texture.name = 'OutlinePass.edge2';
		this.renderTargetEdgeBuffer2.texture.generateMipmaps = false;

const MAX_EDGE_THICKNESS = 4;
		const MAX_EDGE_GLOW = 4;

this.separableBlurMaterial1 = this.getSeperableBlurMaterial( MAX_EDGE_THICKNESS );
		this.separableBlurMaterial1.uniforms[ 'texSize' ].value.set( resx, resy );
		this.separableBlurMaterial1.uniforms[ 'kernelRadius' ].value = 1;
		this.separableBlurMaterial2 = this.getSeperableBlurMaterial( MAX_EDGE_GLOW );
		this.separableBlurMaterial2.uniforms[ 'texSize' ].value.set( Math.round( resx / 2 ), Math.round( resy / 2 ) );
		this.separableBlurMaterial2.uniforms[ 'kernelRadius' ].value = MAX_EDGE_GLOW;

// Overlay material
		this.overlayMaterial = this.getOverlayMaterial();

// copy material

const copyShader = _shaders_CopyShader_js__WEBPACK_IMPORTED_MODULE_2__.CopyShader;

this.copyUniforms = three__WEBPACK_IMPORTED_MODULE_1__.UniformsUtils.clone( copyShader.uniforms );
		this.copyUniforms[ 'opacity' ].value = 1.0;

this.materialCopy = new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {
			uniforms: this.copyUniforms,
			vertexShader: copyShader.vertexShader,
			fragmentShader: copyShader.fragmentShader,
			blending: three__WEBPACK_IMPORTED_MODULE_1__.NoBlending,
			depthTest: false,
			depthWrite: false,
			transparent: true
		} );

this.enabled = true;
		this.needsSwap = false;

this._oldClearColor = new three__WEBPACK_IMPORTED_MODULE_1__.Color();
		this.oldClearAlpha = 1;

this.fsQuad = new _Pass_js__WEBPACK_IMPORTED_MODULE_0__.FullScreenQuad( null );

this.tempPulseColor1 = new three__WEBPACK_IMPORTED_MODULE_1__.Color();
		this.tempPulseColor2 = new three__WEBPACK_IMPORTED_MODULE_1__.Color();
		this.textureMatrix = new three__WEBPACK_IMPORTED_MODULE_1__.Matrix4();

function replaceDepthToViewZ( string, camera ) {

const type = camera.isPerspectiveCamera ? 'perspective' : 'orthographic';

return string.replace( /DEPTH_TO_VIEW_Z/g, type + 'DepthToViewZ' );

}

dispose() {

this.renderTargetMaskBuffer.dispose();
		this.renderTargetDepthBuffer.dispose();
		this.renderTargetMaskDownSampleBuffer.dispose();
		this.renderTargetBlurBuffer1.dispose();
		this.renderTargetBlurBuffer2.dispose();
		this.renderTargetEdgeBuffer1.dispose();
		this.renderTargetEdgeBuffer2.dispose();

this.depthMaterial.dispose();
		this.prepareMaskMaterial.dispose();
		this.edgeDetectionMaterial.dispose();
		this.separableBlurMaterial1.dispose();
		this.separableBlurMaterial2.dispose();
		this.overlayMaterial.dispose();
		this.materialCopy.dispose();

this.fsQuad.dispose();

}

setSize( width, height ) {

this.renderTargetMaskBuffer.setSize( width, height );
		this.renderTargetDepthBuffer.setSize( width, height );

let resx = Math.round( width / this.downSampleRatio );
		let resy = Math.round( height / this.downSampleRatio );
		this.renderTargetMaskDownSampleBuffer.setSize( resx, resy );
		this.renderTargetBlurBuffer1.setSize( resx, resy );
		this.renderTargetEdgeBuffer1.setSize( resx, resy );
		this.separableBlurMaterial1.uniforms[ 'texSize' ].value.set( resx, resy );

resx = Math.round( resx / 2 );
		resy = Math.round( resy / 2 );

this.renderTargetBlurBuffer2.setSize( resx, resy );
		this.renderTargetEdgeBuffer2.setSize( resx, resy );

this.separableBlurMaterial2.uniforms[ 'texSize' ].value.set( resx, resy );

}

changeVisibilityOfSelectedObjects( bVisible ) {

const cache = this._visibilityCache;

function gatherSelectedMeshesCallBack( object ) {

if ( object.isMesh ) {

if ( bVisible === true ) {

object.visible = cache.get( object );

} else {

cache.set( object, object.visible );
					object.visible = bVisible;

}

for ( let i = 0; i < this.selectedObjects.length; i ++ ) {

const selectedObject = this.selectedObjects[ i ];
			selectedObject.traverse( gatherSelectedMeshesCallBack );

}

changeVisibilityOfNonSelectedObjects( bVisible ) {

const cache = this._visibilityCache;
		const selectedMeshes = [];

function gatherSelectedMeshesCallBack( object ) {

if ( object.isMesh ) selectedMeshes.push( object );

}

for ( let i = 0; i < this.selectedObjects.length; i ++ ) {

const selectedObject = this.selectedObjects[ i ];
			selectedObject.traverse( gatherSelectedMeshesCallBack );

}

function VisibilityChangeCallBack( object ) {

if ( object.isMesh || object.isSprite ) {

// only meshes and sprites are supported by OutlinePass

let bFound = false;

for ( let i = 0; i < selectedMeshes.length; i ++ ) {

const selectedObjectId = selectedMeshes[ i ].id;

if ( selectedObjectId === object.id ) {

bFound = true;
						break;

}

if ( bFound === false ) {

const visibility = object.visible;

if ( bVisible === false || cache.get( object ) === true ) {

object.visible = bVisible;

}

cache.set( object, visibility );

}

} else if ( object.isPoints || object.isLine ) {

// the visibilty of points and lines is always set to false in order to
				// not affect the outline computation

if ( bVisible === true ) {

object.visible = cache.get( object ); // restore

} else {

cache.set( object, object.visible );
					object.visible = bVisible;

}

this.renderScene.traverse( VisibilityChangeCallBack );

}

updateTextureMatrix() {

this.textureMatrix.set( 0.5, 0.0, 0.0, 0.5,
			0.0, 0.5, 0.0, 0.5,
			0.0, 0.0, 0.5, 0.5,
			0.0, 0.0, 0.0, 1.0 );
		this.textureMatrix.multiply( this.renderCamera.projectionMatrix );
		this.textureMatrix.multiply( this.renderCamera.matrixWorldInverse );

}

render( renderer, writeBuffer, readBuffer, deltaTime, maskActive ) {

if ( this.selectedObjects.length > 0 ) {

renderer.getClearColor( this._oldClearColor );
			this.oldClearAlpha = renderer.getClearAlpha();
			const oldAutoClear = renderer.autoClear;

renderer.autoClear = false;

if ( maskActive ) renderer.state.buffers.stencil.setTest( false );

renderer.setClearColor( 0xffffff, 1 );

// Make selected objects invisible
			this.changeVisibilityOfSelectedObjects( false );

const currentBackground = this.renderScene.background;
			this.renderScene.background = null;

// 1. Draw Non Selected objects in the depth buffer
			this.renderScene.overrideMaterial = this.depthMaterial;
			renderer.setRenderTarget( this.renderTargetDepthBuffer );
			renderer.clear();
			renderer.render( this.renderScene, this.renderCamera );

// Make selected objects visible
			this.changeVisibilityOfSelectedObjects( true );
			this._visibilityCache.clear();

// Update Texture Matrix for Depth compare
			this.updateTextureMatrix();

// Make non selected objects invisible, and draw only the selected objects, by comparing the depth buffer of non selected objects
			this.changeVisibilityOfNonSelectedObjects( false );
			this.renderScene.overrideMaterial = this.prepareMaskMaterial;
			this.prepareMaskMaterial.uniforms[ 'cameraNearFar' ].value.set( this.renderCamera.near, this.renderCamera.far );
			this.prepareMaskMaterial.uniforms[ 'depthTexture' ].value = this.renderTargetDepthBuffer.texture;
			this.prepareMaskMaterial.uniforms[ 'textureMatrix' ].value = this.textureMatrix;
			renderer.setRenderTarget( this.renderTargetMaskBuffer );
			renderer.clear();
			renderer.render( this.renderScene, this.renderCamera );
			this.renderScene.overrideMaterial = null;
			this.changeVisibilityOfNonSelectedObjects( true );
			this._visibilityCache.clear();

this.renderScene.background = currentBackground;

// 2. Downsample to Half resolution
			this.fsQuad.material = this.materialCopy;
			this.copyUniforms[ 'tDiffuse' ].value = this.renderTargetMaskBuffer.texture;
			renderer.setRenderTarget( this.renderTargetMaskDownSampleBuffer );
			renderer.clear();
			this.fsQuad.render( renderer );

this.tempPulseColor1.copy( this.visibleEdgeColor );
			this.tempPulseColor2.copy( this.hiddenEdgeColor );

if ( this.pulsePeriod > 0 ) {

const scalar = ( 1 + 0.25 ) / 2 + Math.cos( performance.now() * 0.01 / this.pulsePeriod ) * ( 1.0 - 0.25 ) / 2;
				this.tempPulseColor1.multiplyScalar( scalar );
				this.tempPulseColor2.multiplyScalar( scalar );

}

// 3. Apply Edge Detection Pass
			this.fsQuad.material = this.edgeDetectionMaterial;
			this.edgeDetectionMaterial.uniforms[ 'maskTexture' ].value = this.renderTargetMaskDownSampleBuffer.texture;
			this.edgeDetectionMaterial.uniforms[ 'texSize' ].value.set( this.renderTargetMaskDownSampleBuffer.width, this.renderTargetMaskDownSampleBuffer.height );
			this.edgeDetectionMaterial.uniforms[ 'visibleEdgeColor' ].value = this.tempPulseColor1;
			this.edgeDetectionMaterial.uniforms[ 'hiddenEdgeColor' ].value = this.tempPulseColor2;
			renderer.setRenderTarget( this.renderTargetEdgeBuffer1 );
			renderer.clear();
			this.fsQuad.render( renderer );

// 4. Apply Blur on Half res
			this.fsQuad.material = this.separableBlurMaterial1;
			this.separableBlurMaterial1.uniforms[ 'colorTexture' ].value = this.renderTargetEdgeBuffer1.texture;
			this.separableBlurMaterial1.uniforms[ 'direction' ].value = OutlinePass.BlurDirectionX;
			this.separableBlurMaterial1.uniforms[ 'kernelRadius' ].value = this.edgeThickness;
			renderer.setRenderTarget( this.renderTargetBlurBuffer1 );
			renderer.clear();
			this.fsQuad.render( renderer );
			this.separableBlurMaterial1.uniforms[ 'colorTexture' ].value = this.renderTargetBlurBuffer1.texture;
			this.separableBlurMaterial1.uniforms[ 'direction' ].value = OutlinePass.BlurDirectionY;
			renderer.setRenderTarget( this.renderTargetEdgeBuffer1 );
			renderer.clear();
			this.fsQuad.render( renderer );

// Apply Blur on quarter res
			this.fsQuad.material = this.separableBlurMaterial2;
			this.separableBlurMaterial2.uniforms[ 'colorTexture' ].value = this.renderTargetEdgeBuffer1.texture;
			this.separableBlurMaterial2.uniforms[ 'direction' ].value = OutlinePass.BlurDirectionX;
			renderer.setRenderTarget( this.renderTargetBlurBuffer2 );
			renderer.clear();
			this.fsQuad.render( renderer );
			this.separableBlurMaterial2.uniforms[ 'colorTexture' ].value = this.renderTargetBlurBuffer2.texture;
			this.separableBlurMaterial2.uniforms[ 'direction' ].value = OutlinePass.BlurDirectionY;
			renderer.setRenderTarget( this.renderTargetEdgeBuffer2 );
			renderer.clear();
			this.fsQuad.render( renderer );

// Blend it additively over the input texture
			this.fsQuad.material = this.overlayMaterial;
			this.overlayMaterial.uniforms[ 'maskTexture' ].value = this.renderTargetMaskBuffer.texture;
			this.overlayMaterial.uniforms[ 'edgeTexture1' ].value = this.renderTargetEdgeBuffer1.texture;
			this.overlayMaterial.uniforms[ 'edgeTexture2' ].value = this.renderTargetEdgeBuffer2.texture;
			this.overlayMaterial.uniforms[ 'patternTexture' ].value = this.patternTexture;
			this.overlayMaterial.uniforms[ 'edgeStrength' ].value = this.edgeStrength;
			this.overlayMaterial.uniforms[ 'edgeGlow' ].value = this.edgeGlow;
			this.overlayMaterial.uniforms[ 'usePatternTexture' ].value = this.usePatternTexture;

if ( maskActive ) renderer.state.buffers.stencil.setTest( true );

renderer.setRenderTarget( readBuffer );
			this.fsQuad.render( renderer );

renderer.setClearColor( this._oldClearColor, this.oldClearAlpha );
			renderer.autoClear = oldAutoClear;

}

if ( this.renderToScreen ) {

this.fsQuad.material = this.materialCopy;
			this.copyUniforms[ 'tDiffuse' ].value = readBuffer.texture;
			renderer.setRenderTarget( null );
			this.fsQuad.render( renderer );

}

getPrepareMaskMaterial() {

return new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {

uniforms: {
				'depthTexture': { value: null },
				'cameraNearFar': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 0.5, 0.5 ) },
				'textureMatrix': { value: null }
			},

vertexShader:
				`#include <morphtarget_pars_vertex>
				#include <skinning_pars_vertex>

varying vec4 projTexCoord;
				varying vec4 vPosition;
				uniform mat4 textureMatrix;

void main() {

#include <skinbase_vertex>
					#include <begin_vertex>
					#include <morphtarget_vertex>
					#include <skinning_vertex>
					#include <project_vertex>

vPosition = mvPosition;

vec4 worldPosition = vec4( transformed, 1.0 );

#ifdef USE_INSTANCING

worldPosition = instanceMatrix * worldPosition;

#endif
					
					worldPosition = modelMatrix * worldPosition;

projTexCoord = textureMatrix * worldPosition;

}`,

fragmentShader:
				`#include <packing>
				varying vec4 vPosition;
				varying vec4 projTexCoord;
				uniform sampler2D depthTexture;
				uniform vec2 cameraNearFar;

void main() {

float depth = unpackRGBAToDepth(texture2DProj( depthTexture, projTexCoord ));
					float viewZ = - DEPTH_TO_VIEW_Z( depth, cameraNearFar.x, cameraNearFar.y );
					float depthTest = (-vPosition.z > viewZ) ? 1.0 : 0.0;
					gl_FragColor = vec4(0.0, depthTest, 1.0, 1.0);

} );

}

getEdgeDetectionMaterial() {

return new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {

uniforms: {
				'maskTexture': { value: null },
				'texSize': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 0.5, 0.5 ) },
				'visibleEdgeColor': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector3( 1.0, 1.0, 1.0 ) },
				'hiddenEdgeColor': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector3( 1.0, 1.0, 1.0 ) },
			},

vertexShader:
				`varying vec2 vUv;

void main() {
					vUv = uv;
					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
				}`,

fragmentShader:
				`varying vec2 vUv;

uniform sampler2D maskTexture;
				uniform vec2 texSize;
				uniform vec3 visibleEdgeColor;
				uniform vec3 hiddenEdgeColor;

void main() {
					vec2 invSize = 1.0 / texSize;
					vec4 uvOffset = vec4(1.0, 0.0, 0.0, 1.0) * vec4(invSize, invSize);
					vec4 c1 = texture2D( maskTexture, vUv + uvOffset.xy);
					vec4 c2 = texture2D( maskTexture, vUv - uvOffset.xy);
					vec4 c3 = texture2D( maskTexture, vUv + uvOffset.yw);
					vec4 c4 = texture2D( maskTexture, vUv - uvOffset.yw);
					float diff1 = (c1.r - c2.r)*0.5;
					float diff2 = (c3.r - c4.r)*0.5;
					float d = length( vec2(diff1, diff2) );
					float a1 = min(c1.g, c2.g);
					float a2 = min(c3.g, c4.g);
					float visibilityFactor = min(a1, a2);
					vec3 edgeColor = 1.0 - visibilityFactor > 0.001 ? visibleEdgeColor : hiddenEdgeColor;
					gl_FragColor = vec4(edgeColor, 1.0) * vec4(d);
				}`
		} );

}

getSeperableBlurMaterial( maxRadius ) {

return new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {

defines: {
				'MAX_RADIUS': maxRadius,
			},

uniforms: {
				'colorTexture': { value: null },
				'texSize': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 0.5, 0.5 ) },
				'direction': { value: new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 0.5, 0.5 ) },
				'kernelRadius': { value: 1.0 }
			},

vertexShader:
				`varying vec2 vUv;

void main() {
					vUv = uv;
					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
				}`,

fragmentShader:
				`#include <common>
				varying vec2 vUv;
				uniform sampler2D colorTexture;
				uniform vec2 texSize;
				uniform vec2 direction;
				uniform float kernelRadius;

float gaussianPdf(in float x, in float sigma) {
					return 0.39894 * exp( -0.5 * x * x/( sigma * sigma))/sigma;
				}

void main() {
					vec2 invSize = 1.0 / texSize;
					float sigma = kernelRadius/2.0;
					float weightSum = gaussianPdf(0.0, sigma);
					vec4 diffuseSum = texture2D( colorTexture, vUv) * weightSum;
					vec2 delta = direction * invSize * kernelRadius/float(MAX_RADIUS);
					vec2 uvOffset = delta;
					for( int i = 1; i <= MAX_RADIUS; i ++ ) {
						float x = kernelRadius * float(i) / float(MAX_RADIUS);
						float w = gaussianPdf(x, sigma);
						vec4 sample1 = texture2D( colorTexture, vUv + uvOffset);
						vec4 sample2 = texture2D( colorTexture, vUv - uvOffset);
						diffuseSum += ((sample1 + sample2) * w);
						weightSum += (2.0 * w);
						uvOffset += delta;
					}
					gl_FragColor = diffuseSum/weightSum;
				}`
		} );

}

getOverlayMaterial() {

return new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {

uniforms: {
				'maskTexture': { value: null },
				'edgeTexture1': { value: null },
				'edgeTexture2': { value: null },
				'patternTexture': { value: null },
				'edgeStrength': { value: 1.0 },
				'edgeGlow': { value: 1.0 },
				'usePatternTexture': { value: 0.0 }
			},

vertexShader:
				`varying vec2 vUv;

void main() {
					vUv = uv;
					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
				}`,

fragmentShader:
				`varying vec2 vUv;

uniform sampler2D maskTexture;
				uniform sampler2D edgeTexture1;
				uniform sampler2D edgeTexture2;
				uniform sampler2D patternTexture;
				uniform float edgeStrength;
				uniform float edgeGlow;
				uniform bool usePatternTexture;

void main() {
					vec4 edgeValue1 = texture2D(edgeTexture1, vUv);
					vec4 edgeValue2 = texture2D(edgeTexture2, vUv);
					vec4 maskColor = texture2D(maskTexture, vUv);
					vec4 patternColor = texture2D(patternTexture, 6.0 * vUv);
					float visibilityFactor = 1.0 - maskColor.g > 0.0 ? 1.0 : 0.5;
					vec4 edgeValue = edgeValue1 + edgeValue2 * edgeGlow;
					vec4 finalColor = edgeStrength * maskColor.r * edgeValue;
					if(usePatternTexture)
						finalColor += + visibilityFactor * (1.0 - maskColor.r) * (1.0 - patternColor.r);
					gl_FragColor = finalColor;
				}`,
			blending: three__WEBPACK_IMPORTED_MODULE_1__.AdditiveBlending,
			depthTest: false,
			depthWrite: false,
			transparent: true
		} );

}

OutlinePass.BlurDirectionX = new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 1.0, 0.0 );
OutlinePass.BlurDirectionY = new three__WEBPACK_IMPORTED_MODULE_1__.Vector2( 0.0, 1.0 );

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/Pass.js":
/*!****************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/Pass.js ***!
  \****************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "FullScreenQuad": () => (/* binding */ FullScreenQuad),
/* harmony export */   "Pass": () => (/* binding */ Pass)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");

class Pass {

constructor() {

this.isPass = true;

// if set to true, the pass is processed by the composer
		this.enabled = true;

// if set to true, the pass indicates to swap read and write buffer after rendering
		this.needsSwap = true;

// if set to true, the pass clears its buffer before rendering
		this.clear = false;

// if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.
		this.renderToScreen = false;

}

setSize( /* width, height */ ) {}

render( /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */ ) {

console.error( 'THREE.Pass: .render() must be implemented in derived pass.' );

}

dispose() {}

}

// Helper for passes that need to fill the viewport with a single quad.

const _camera = new three__WEBPACK_IMPORTED_MODULE_0__.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );

// https://github.com/mrdoob/three.js/pull/21358

const _geometry = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry();
_geometry.setAttribute( 'position', new three__WEBPACK_IMPORTED_MODULE_0__.Float32BufferAttribute( [ - 1, 3, 0, - 1, - 1, 0, 3, - 1, 0 ], 3 ) );
_geometry.setAttribute( 'uv', new three__WEBPACK_IMPORTED_MODULE_0__.Float32BufferAttribute( [ 0, 2, 0, 0, 2, 0 ], 2 ) );

class FullScreenQuad {

constructor( material ) {

this._mesh = new three__WEBPACK_IMPORTED_MODULE_0__.Mesh( _geometry, material );

}

dispose() {

this._mesh.geometry.dispose();

}

render( renderer ) {

renderer.render( this._mesh, _camera );

}

get material() {

return this._mesh.material;

}

set material( value ) {

this._mesh.material = value;

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/RenderPass.js":
/*!**********************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/RenderPass.js ***!
  \**********************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "RenderPass": () => (/* binding */ RenderPass)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var _Pass_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./Pass.js */ "./node_modules/three/examples/jsm/postprocessing/Pass.js");

class RenderPass extends _Pass_js__WEBPACK_IMPORTED_MODULE_0__.Pass {

constructor( scene, camera, overrideMaterial, clearColor, clearAlpha ) {

super();

this.scene = scene;
		this.camera = camera;

this.overrideMaterial = overrideMaterial;

this.clearColor = clearColor;
		this.clearAlpha = ( clearAlpha !== undefined ) ? clearAlpha : 0;

this.clear = true;
		this.clearDepth = false;
		this.needsSwap = false;
		this._oldClearColor = new three__WEBPACK_IMPORTED_MODULE_1__.Color();

}

render( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {

const oldAutoClear = renderer.autoClear;
		renderer.autoClear = false;

let oldClearAlpha, oldOverrideMaterial;

if ( this.overrideMaterial !== undefined ) {

oldOverrideMaterial = this.scene.overrideMaterial;

this.scene.overrideMaterial = this.overrideMaterial;

}

if ( this.clearColor ) {

renderer.getClearColor( this._oldClearColor );
			oldClearAlpha = renderer.getClearAlpha();

renderer.setClearColor( this.clearColor, this.clearAlpha );

}

if ( this.clearDepth ) {

renderer.clearDepth();

}

renderer.setRenderTarget( this.renderToScreen ? null : readBuffer );

// TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600
		if ( this.clear ) renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
		renderer.render( this.scene, this.camera );

if ( this.clearColor ) {

renderer.setClearColor( this._oldClearColor, oldClearAlpha );

}

if ( this.overrideMaterial !== undefined ) {

this.scene.overrideMaterial = oldOverrideMaterial;

}

renderer.autoClear = oldAutoClear;

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/postprocessing/ShaderPass.js":
/*!**********************************************************************!*\
  !*** ./node_modules/three/examples/jsm/postprocessing/ShaderPass.js ***!
  \**********************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "ShaderPass": () => (/* binding */ ShaderPass)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var _Pass_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./Pass.js */ "./node_modules/three/examples/jsm/postprocessing/Pass.js");

class ShaderPass extends _Pass_js__WEBPACK_IMPORTED_MODULE_0__.Pass {

constructor( shader, textureID ) {

super();

this.textureID = ( textureID !== undefined ) ? textureID : 'tDiffuse';

if ( shader instanceof three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial ) {

this.uniforms = shader.uniforms;

this.material = shader;

} else if ( shader ) {

this.uniforms = three__WEBPACK_IMPORTED_MODULE_1__.UniformsUtils.clone( shader.uniforms );

this.material = new three__WEBPACK_IMPORTED_MODULE_1__.ShaderMaterial( {

defines: Object.assign( {}, shader.defines ),
				uniforms: this.uniforms,
				vertexShader: shader.vertexShader,
				fragmentShader: shader.fragmentShader

} );

}

this.fsQuad = new _Pass_js__WEBPACK_IMPORTED_MODULE_0__.FullScreenQuad( this.material );

}

render( renderer, writeBuffer, readBuffer /*, deltaTime, maskActive */ ) {

if ( this.uniforms[ this.textureID ] ) {

this.uniforms[ this.textureID ].value = readBuffer.texture;

}

this.fsQuad.material = this.material;

if ( this.renderToScreen ) {

renderer.setRenderTarget( null );
			this.fsQuad.render( renderer );

} else {

renderer.setRenderTarget( writeBuffer );
			// TODO: Avoid using autoClear properties, see https://github.com/mrdoob/three.js/pull/15571#issuecomment-465669600
			if ( this.clear ) renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
			this.fsQuad.render( renderer );

}

dispose() {

this.material.dispose();

this.fsQuad.dispose();

}

/***/ }),

/***/ "./node_modules/three/examples/jsm/shaders/CopyShader.js":
/*!***************************************************************!*\
  !*** ./node_modules/three/examples/jsm/shaders/CopyShader.js ***!
  \***************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "CopyShader": () => (/* binding */ CopyShader)
/* harmony export */ });
/**
 * Full-screen textured quad shader
 */

const CopyShader = {

uniforms: {

'tDiffuse': { value: null },
		'opacity': { value: 1.0 }

vertexShader: /* glsl */`

varying vec2 vUv;

void main() {

vUv = uv;
			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

}`,

fragmentShader: /* glsl */`

uniform float opacity;

uniform sampler2D tDiffuse;

varying vec2 vUv;

void main() {

gl_FragColor = texture2D( tDiffuse, vUv );
			gl_FragColor.a *= opacity;

};

/***/ }),

/***/ "./node_modules/three/examples/jsm/utils/BufferGeometryUtils.js":
/*!**********************************************************************!*\
  !*** ./node_modules/three/examples/jsm/utils/BufferGeometryUtils.js ***!
  \**********************************************************************/
/***/ ((__unused_webpack___webpack_module__, __webpack_exports__, __webpack_require__) => {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "computeMikkTSpaceTangents": () => (/* binding */ computeMikkTSpaceTangents),
/* harmony export */   "computeMorphedAttributes": () => (/* binding */ computeMorphedAttributes),
/* harmony export */   "deepCloneAttribute": () => (/* binding */ deepCloneAttribute),
/* harmony export */   "deinterleaveAttribute": () => (/* binding */ deinterleaveAttribute),
/* harmony export */   "deinterleaveGeometry": () => (/* binding */ deinterleaveGeometry),
/* harmony export */   "estimateBytesUsed": () => (/* binding */ estimateBytesUsed),
/* harmony export */   "interleaveAttributes": () => (/* binding */ interleaveAttributes),
/* harmony export */   "mergeAttributes": () => (/* binding */ mergeAttributes),
/* harmony export */   "mergeBufferAttributes": () => (/* binding */ mergeBufferAttributes),
/* harmony export */   "mergeBufferGeometries": () => (/* binding */ mergeBufferGeometries),
/* harmony export */   "mergeGeometries": () => (/* binding */ mergeGeometries),
/* harmony export */   "mergeGroups": () => (/* binding */ mergeGroups),
/* harmony export */   "mergeVertices": () => (/* binding */ mergeVertices),
/* harmony export */   "toCreasedNormals": () => (/* binding */ toCreasedNormals),
/* harmony export */   "toTrianglesDrawMode": () => (/* binding */ toTrianglesDrawMode)
/* harmony export */ });
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");

function computeMikkTSpaceTangents( geometry, MikkTSpace, negateSign = true ) {

if ( ! MikkTSpace || ! MikkTSpace.isReady ) {

throw new Error( 'BufferGeometryUtils: Initialized MikkTSpace library required.' );

}

if ( ! geometry.hasAttribute( 'position' ) || ! geometry.hasAttribute( 'normal' ) || ! geometry.hasAttribute( 'uv' ) ) {

throw new Error( 'BufferGeometryUtils: Tangents require "position", "normal", and "uv" attributes.' );

}

function getAttributeArray( attribute ) {

if ( attribute.normalized || attribute.isInterleavedBufferAttribute ) {

const dstArray = new Float32Array( attribute.getCount() * attribute.itemSize );

for ( let i = 0, j = 0; i < attribute.getCount(); i ++ ) {

dstArray[ j ++ ] = attribute.getX( i );
				dstArray[ j ++ ] = attribute.getY( i );

if ( attribute.itemSize > 2 ) {

dstArray[ j ++ ] = attribute.getZ( i );

}

return dstArray;

}

if ( attribute.array instanceof Float32Array ) {

return attribute.array;

}

return new Float32Array( attribute.array );

}

// MikkTSpace algorithm requires non-indexed input.

const _geometry = geometry.index ? geometry.toNonIndexed() : geometry;

// Compute vertex tangents.

const tangents = MikkTSpace.generateTangents(

getAttributeArray( _geometry.attributes.position ),
		getAttributeArray( _geometry.attributes.normal ),
		getAttributeArray( _geometry.attributes.uv )

);

// Texture coordinate convention of glTF differs from the apparent
	// default of the MikkTSpace library; .w component must be flipped.

if ( negateSign ) {

for ( let i = 3; i < tangents.length; i += 4 ) {

tangents[ i ] *= - 1;

}

_geometry.setAttribute( 'tangent', new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( tangents, 4 ) );

if ( geometry !== _geometry ) {

geometry.copy( _geometry );

}

return geometry;

}

/**
 * @param  {Array<BufferGeometry>} geometries
 * @param  {Boolean} useGroups
 * @return {BufferGeometry}
 */
function mergeGeometries( geometries, useGroups = false ) {

const isIndexed = geometries[ 0 ].index !== null;

const attributesUsed = new Set( Object.keys( geometries[ 0 ].attributes ) );
	const morphAttributesUsed = new Set( Object.keys( geometries[ 0 ].morphAttributes ) );

const attributes = {};
	const morphAttributes = {};

const morphTargetsRelative = geometries[ 0 ].morphTargetsRelative;

const mergedGeometry = new three__WEBPACK_IMPORTED_MODULE_0__.BufferGeometry();

let offset = 0;

for ( let i = 0; i < geometries.length; ++ i ) {

const geometry = geometries[ i ];
		let attributesCount = 0;

// ensure that all geometries are indexed, or none

if ( isIndexed !== ( geometry.index !== null ) ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure index attribute exists among all geometries, or in none of them.' );
			return null;

}

// gather attributes, exit early if they're different

for ( const name in geometry.attributes ) {

if ( ! attributesUsed.has( name ) ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '. All geometries must have compatible attributes; make sure "' + name + '" attribute exists among all geometries, or in none of them.' );
				return null;

}

if ( attributes[ name ] === undefined ) attributes[ name ] = [];

attributes[ name ].push( geometry.attributes[ name ] );

attributesCount ++;

}

// ensure geometries have the same number of attributes

if ( attributesCount !== attributesUsed.size ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '. Make sure all geometries have the same number of attributes.' );
			return null;

}

// gather morph attributes, exit early if they're different

if ( morphTargetsRelative !== geometry.morphTargetsRelative ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '. .morphTargetsRelative must be consistent throughout all geometries.' );
			return null;

}

for ( const name in geometry.morphAttributes ) {

if ( ! morphAttributesUsed.has( name ) ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '.  .morphAttributes must be consistent throughout all geometries.' );
				return null;

}

if ( morphAttributes[ name ] === undefined ) morphAttributes[ name ] = [];

morphAttributes[ name ].push( geometry.morphAttributes[ name ] );

}

if ( useGroups ) {

let count;

if ( isIndexed ) {

count = geometry.index.count;

} else if ( geometry.attributes.position !== undefined ) {

count = geometry.attributes.position.count;

} else {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed with geometry at index ' + i + '. The geometry must have either an index or a position attribute' );
				return null;

}

mergedGeometry.addGroup( offset, count, i );

offset += count;

}

// merge indices

if ( isIndexed ) {

let indexOffset = 0;
		const mergedIndex = [];

for ( let i = 0; i < geometries.length; ++ i ) {

const index = geometries[ i ].index;

for ( let j = 0; j < index.count; ++ j ) {

mergedIndex.push( index.getX( j ) + indexOffset );

}

indexOffset += geometries[ i ].attributes.position.count;

}

mergedGeometry.setIndex( mergedIndex );

}

// merge attributes

for ( const name in attributes ) {

const mergedAttribute = mergeAttributes( attributes[ name ] );

if ( ! mergedAttribute ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed while trying to merge the ' + name + ' attribute.' );
			return null;

}

mergedGeometry.setAttribute( name, mergedAttribute );

}

// merge morph attributes

for ( const name in morphAttributes ) {

const numMorphTargets = morphAttributes[ name ][ 0 ].length;

if ( numMorphTargets === 0 ) break;

mergedGeometry.morphAttributes = mergedGeometry.morphAttributes || {};
		mergedGeometry.morphAttributes[ name ] = [];

for ( let i = 0; i < numMorphTargets; ++ i ) {

const morphAttributesToMerge = [];

for ( let j = 0; j < morphAttributes[ name ].length; ++ j ) {

morphAttributesToMerge.push( morphAttributes[ name ][ j ][ i ] );

}

const mergedMorphAttribute = mergeAttributes( morphAttributesToMerge );

if ( ! mergedMorphAttribute ) {

console.error( 'THREE.BufferGeometryUtils: .mergeGeometries() failed while trying to merge the ' + name + ' morphAttribute.' );
				return null;

}

mergedGeometry.morphAttributes[ name ].push( mergedMorphAttribute );

}

return mergedGeometry;

}

/**
 * @param {Array<BufferAttribute>} attributes
 * @return {BufferAttribute}
 */
function mergeAttributes( attributes ) {

let TypedArray;
	let itemSize;
	let normalized;
	let arrayLength = 0;

for ( let i = 0; i < attributes.length; ++ i ) {

const attribute = attributes[ i ];

if ( attribute.isInterleavedBufferAttribute ) {

console.error( 'THREE.BufferGeometryUtils: .mergeAttributes() failed. InterleavedBufferAttributes are not supported.' );
			return null;

}

if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;
		if ( TypedArray !== attribute.array.constructor ) {

console.error( 'THREE.BufferGeometryUtils: .mergeAttributes() failed. BufferAttribute.array must be of consistent array types across matching attributes.' );
			return null;

}

if ( itemSize === undefined ) itemSize = attribute.itemSize;
		if ( itemSize !== attribute.itemSize ) {

console.error( 'THREE.BufferGeometryUtils: .mergeAttributes() failed. BufferAttribute.itemSize must be consistent across matching attributes.' );
			return null;

}

if ( normalized === undefined ) normalized = attribute.normalized;
		if ( normalized !== attribute.normalized ) {

console.error( 'THREE.BufferGeometryUtils: .mergeAttributes() failed. BufferAttribute.normalized must be consistent across matching attributes.' );
			return null;

}

arrayLength += attribute.array.length;

}

const array = new TypedArray( arrayLength );
	let offset = 0;

for ( let i = 0; i < attributes.length; ++ i ) {

array.set( attributes[ i ].array, offset );

offset += attributes[ i ].array.length;

}

return new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( array, itemSize, normalized );

}

/**
 * @param {BufferAttribute}
 * @return {BufferAttribute}
 */
function deepCloneAttribute( attribute ) {

if ( attribute.isInstancedInterleavedBufferAttribute || attribute.isInterleavedBufferAttribute ) {

return deinterleaveAttribute( attribute );

}

if ( attribute.isInstancedBufferAttribute ) {

return new three__WEBPACK_IMPORTED_MODULE_0__.InstancedBufferAttribute().copy( attribute );

}

return new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute().copy( attribute );

}

/**
 * @param {Array<BufferAttribute>} attributes
 * @return {Array<InterleavedBufferAttribute>}
 */
function interleaveAttributes( attributes ) {

// Interleaves the provided attributes into an InterleavedBuffer and returns
	// a set of InterleavedBufferAttributes for each attribute
	let TypedArray;
	let arrayLength = 0;
	let stride = 0;

// calculate the length and type of the interleavedBuffer
	for ( let i = 0, l = attributes.length; i < l; ++ i ) {

const attribute = attributes[ i ];

if ( TypedArray === undefined ) TypedArray = attribute.array.constructor;
		if ( TypedArray !== attribute.array.constructor ) {

console.error( 'AttributeBuffers of different types cannot be interleaved' );
			return null;

}

arrayLength += attribute.array.length;
		stride += attribute.itemSize;

}

// Create the set of buffer attributes
	const interleavedBuffer = new three__WEBPACK_IMPORTED_MODULE_0__.InterleavedBuffer( new TypedArray( arrayLength ), stride );
	let offset = 0;
	const res = [];
	const getters = [ 'getX', 'getY', 'getZ', 'getW' ];
	const setters = [ 'setX', 'setY', 'setZ', 'setW' ];

for ( let j = 0, l = attributes.length; j < l; j ++ ) {

const attribute = attributes[ j ];
		const itemSize = attribute.itemSize;
		const count = attribute.count;
		const iba = new three__WEBPACK_IMPORTED_MODULE_0__.InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, attribute.normalized );
		res.push( iba );

offset += itemSize;

// Move the data for each attribute into the new interleavedBuffer
		// at the appropriate offset
		for ( let c = 0; c < count; c ++ ) {

for ( let k = 0; k < itemSize; k ++ ) {

iba[ setters[ k ] ]( c, attribute[ getters[ k ] ]( c ) );

}

return res;

}

// returns a new, non-interleaved version of the provided attribute
function deinterleaveAttribute( attribute ) {

const cons = attribute.data.array.constructor;
	const count = attribute.count;
	const itemSize = attribute.itemSize;
	const normalized = attribute.normalized;

const array = new cons( count * itemSize );
	let newAttribute;
	if ( attribute.isInstancedInterleavedBufferAttribute ) {

newAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.InstancedBufferAttribute( array, itemSize, normalized, attribute.meshPerAttribute );

} else {

newAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( array, itemSize, normalized );

}

for ( let i = 0; i < count; i ++ ) {

newAttribute.setX( i, attribute.getX( i ) );

if ( itemSize >= 2 ) {

newAttribute.setY( i, attribute.getY( i ) );

}

if ( itemSize >= 3 ) {

newAttribute.setZ( i, attribute.getZ( i ) );

}

if ( itemSize >= 4 ) {

newAttribute.setW( i, attribute.getW( i ) );

}

return newAttribute;

}

// deinterleaves all attributes on the geometry
function deinterleaveGeometry( geometry ) {

const attributes = geometry.attributes;
	const morphTargets = geometry.morphTargets;
	const attrMap = new Map();

for ( const key in attributes ) {

const attr = attributes[ key ];
		if ( attr.isInterleavedBufferAttribute ) {

if ( ! attrMap.has( attr ) ) {

attrMap.set( attr, deinterleaveAttribute( attr ) );

}

attributes[ key ] = attrMap.get( attr );

}

for ( const key in morphTargets ) {

const attr = morphTargets[ key ];
		if ( attr.isInterleavedBufferAttribute ) {

if ( ! attrMap.has( attr ) ) {

attrMap.set( attr, deinterleaveAttribute( attr ) );

}

morphTargets[ key ] = attrMap.get( attr );

}

/**
 * @param {Array<BufferGeometry>} geometry
 * @return {number}
 */
function estimateBytesUsed( geometry ) {

// Return the estimated memory used by this geometry in bytes
	// Calculate using itemSize, count, and BYTES_PER_ELEMENT to account
	// for InterleavedBufferAttributes.
	let mem = 0;
	for ( const name in geometry.attributes ) {

const attr = geometry.getAttribute( name );
		mem += attr.count * attr.itemSize * attr.array.BYTES_PER_ELEMENT;

}

const indices = geometry.getIndex();
	mem += indices ? indices.count * indices.itemSize * indices.array.BYTES_PER_ELEMENT : 0;
	return mem;

}

/**
 * @param {BufferGeometry} geometry
 * @param {number} tolerance
 * @return {BufferGeometry}
 */
function mergeVertices( geometry, tolerance = 1e-4 ) {

tolerance = Math.max( tolerance, Number.EPSILON );

// Generate an index buffer if the geometry doesn't have one, or optimize it
	// if it's already available.
	const hashToIndex = {};
	const indices = geometry.getIndex();
	const positions = geometry.getAttribute( 'position' );
	const vertexCount = indices ? indices.count : positions.count;

// next value for triangle indices
	let nextIndex = 0;

// attributes and new attribute arrays
	const attributeNames = Object.keys( geometry.attributes );
	const tmpAttributes = {};
	const tmpMorphAttributes = {};
	const newIndices = [];
	const getters = [ 'getX', 'getY', 'getZ', 'getW' ];
	const setters = [ 'setX', 'setY', 'setZ', 'setW' ];

// Initialize the arrays, allocating space conservatively. Extra
	// space will be trimmed in the last step.
	for ( let i = 0, l = attributeNames.length; i < l; i ++ ) {

const name = attributeNames[ i ];
		const attr = geometry.attributes[ name ];

tmpAttributes[ name ] = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute(
			new attr.array.constructor( attr.count * attr.itemSize ),
			attr.itemSize,
			attr.normalized
		);

const morphAttr = geometry.morphAttributes[ name ];
		if ( morphAttr ) {

tmpMorphAttributes[ name ] = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute(
				new morphAttr.array.constructor( morphAttr.count * morphAttr.itemSize ),
				morphAttr.itemSize,
				morphAttr.normalized
			);

}

// convert the error tolerance to an amount of decimal places to truncate to
	const decimalShift = Math.log10( 1 / tolerance );
	const shiftMultiplier = Math.pow( 10, decimalShift );
	for ( let i = 0; i < vertexCount; i ++ ) {

const index = indices ? indices.getX( i ) : i;

// Generate a hash for the vertex attributes at the current index 'i'
		let hash = '';
		for ( let j = 0, l = attributeNames.length; j < l; j ++ ) {

const name = attributeNames[ j ];
			const attribute = geometry.getAttribute( name );
			const itemSize = attribute.itemSize;

for ( let k = 0; k < itemSize; k ++ ) {

// double tilde truncates the decimal value
				hash += `${ ~ ~ ( attribute[ getters[ k ] ]( index ) * shiftMultiplier ) },`;

}

// Add another reference to the vertex if it's already
		// used by another index
		if ( hash in hashToIndex ) {

newIndices.push( hashToIndex[ hash ] );

} else {

// copy data to the new index in the temporary attributes
			for ( let j = 0, l = attributeNames.length; j < l; j ++ ) {

const name = attributeNames[ j ];
				const attribute = geometry.getAttribute( name );
				const morphAttr = geometry.morphAttributes[ name ];
				const itemSize = attribute.itemSize;
				const newarray = tmpAttributes[ name ];
				const newMorphArrays = tmpMorphAttributes[ name ];

for ( let k = 0; k < itemSize; k ++ ) {

const getterFunc = getters[ k ];
					const setterFunc = setters[ k ];
					newarray[ setterFunc ]( nextIndex, attribute[ getterFunc ]( index ) );

if ( morphAttr ) {

for ( let m = 0, ml = morphAttr.length; m < ml; m ++ ) {

newMorphArrays[ m ][ setterFunc ]( nextIndex, morphAttr[ m ][ getterFunc ]( index ) );

}

hashToIndex[ hash ] = nextIndex;
			newIndices.push( nextIndex );
			nextIndex ++;

}

// generate result BufferGeometry
	const result = geometry.clone();
	for ( const name in geometry.attributes ) {

const tmpAttribute = tmpAttributes[ name ];

result.setAttribute( name, new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute(
			tmpAttribute.array.slice( 0, nextIndex * tmpAttribute.itemSize ),
			tmpAttribute.itemSize,
			tmpAttribute.normalized,
		) );

if ( ! ( name in tmpMorphAttributes ) ) continue;

for ( let j = 0; j < tmpMorphAttributes[ name ].length; j ++ ) {

const tmpMorphAttribute = tmpMorphAttributes[ name ][ j ];

result.morphAttributes[ name ][ j ] = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute(
				tmpMorphAttribute.array.slice( 0, nextIndex * tmpMorphAttribute.itemSize ),
				tmpMorphAttribute.itemSize,
				tmpMorphAttribute.normalized,
			);

}

// indices

result.setIndex( newIndices );

return result;

}

/**
 * @param {BufferGeometry} geometry
 * @param {number} drawMode
 * @return {BufferGeometry}
 */
function toTrianglesDrawMode( geometry, drawMode ) {

if ( drawMode === three__WEBPACK_IMPORTED_MODULE_0__.TrianglesDrawMode ) {

console.warn( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Geometry already defined as triangles.' );
		return geometry;

}

if ( drawMode === three__WEBPACK_IMPORTED_MODULE_0__.TriangleFanDrawMode || drawMode === three__WEBPACK_IMPORTED_MODULE_0__.TriangleStripDrawMode ) {

let index = geometry.getIndex();

// generate index if not present

if ( index === null ) {

const indices = [];

const position = geometry.getAttribute( 'position' );

if ( position !== undefined ) {

for ( let i = 0; i < position.count; i ++ ) {

indices.push( i );

}

geometry.setIndex( indices );
				index = geometry.getIndex();

} else {

console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.' );
				return geometry;

}

const numberOfTriangles = index.count - 2;
		const newIndices = [];

if ( drawMode === three__WEBPACK_IMPORTED_MODULE_0__.TriangleFanDrawMode ) {

// gl.TRIANGLE_FAN

for ( let i = 1; i <= numberOfTriangles; i ++ ) {

newIndices.push( index.getX( 0 ) );
				newIndices.push( index.getX( i ) );
				newIndices.push( index.getX( i + 1 ) );

}

} else {

// gl.TRIANGLE_STRIP

for ( let i = 0; i < numberOfTriangles; i ++ ) {

if ( i % 2 === 0 ) {

newIndices.push( index.getX( i ) );
					newIndices.push( index.getX( i + 1 ) );
					newIndices.push( index.getX( i + 2 ) );

} else {

newIndices.push( index.getX( i + 2 ) );
					newIndices.push( index.getX( i + 1 ) );
					newIndices.push( index.getX( i ) );

}

if ( ( newIndices.length / 3 ) !== numberOfTriangles ) {

console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Unable to generate correct amount of triangles.' );

}

// build final geometry

const newGeometry = geometry.clone();
		newGeometry.setIndex( newIndices );
		newGeometry.clearGroups();

return newGeometry;

} else {

console.error( 'THREE.BufferGeometryUtils.toTrianglesDrawMode(): Unknown draw mode:', drawMode );
		return geometry;

}

/**
 * Calculates the morphed attributes of a morphed/skinned BufferGeometry.
 * Helpful for Raytracing or Decals.
 * @param {Mesh | Line | Points} object An instance of Mesh, Line or Points.
 * @return {Object} An Object with original position/normal attributes and morphed ones.
 */
function computeMorphedAttributes( object ) {

const _vA = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _vB = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _vC = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

const _tempA = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _tempB = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _tempC = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

const _morphA = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _morphB = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const _morphC = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

function _calculateMorphedAttributeData(
		object,
		attribute,
		morphAttribute,
		morphTargetsRelative,
		a,
		b,
		c,
		modifiedAttributeArray
	) {

_vA.fromBufferAttribute( attribute, a );
		_vB.fromBufferAttribute( attribute, b );
		_vC.fromBufferAttribute( attribute, c );

const morphInfluences = object.morphTargetInfluences;

if ( morphAttribute && morphInfluences ) {

_morphA.set( 0, 0, 0 );
			_morphB.set( 0, 0, 0 );
			_morphC.set( 0, 0, 0 );

for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {

const influence = morphInfluences[ i ];
				const morph = morphAttribute[ i ];

if ( influence === 0 ) continue;

_tempA.fromBufferAttribute( morph, a );
				_tempB.fromBufferAttribute( morph, b );
				_tempC.fromBufferAttribute( morph, c );

if ( morphTargetsRelative ) {

_morphA.addScaledVector( _tempA, influence );
					_morphB.addScaledVector( _tempB, influence );
					_morphC.addScaledVector( _tempC, influence );

} else {

_morphA.addScaledVector( _tempA.sub( _vA ), influence );
					_morphB.addScaledVector( _tempB.sub( _vB ), influence );
					_morphC.addScaledVector( _tempC.sub( _vC ), influence );

}

_vA.add( _morphA );
			_vB.add( _morphB );
			_vC.add( _morphC );

}

if ( object.isSkinnedMesh ) {

object.applyBoneTransform( a, _vA );
			object.applyBoneTransform( b, _vB );
			object.applyBoneTransform( c, _vC );

}

modifiedAttributeArray[ a * 3 + 0 ] = _vA.x;
		modifiedAttributeArray[ a * 3 + 1 ] = _vA.y;
		modifiedAttributeArray[ a * 3 + 2 ] = _vA.z;
		modifiedAttributeArray[ b * 3 + 0 ] = _vB.x;
		modifiedAttributeArray[ b * 3 + 1 ] = _vB.y;
		modifiedAttributeArray[ b * 3 + 2 ] = _vB.z;
		modifiedAttributeArray[ c * 3 + 0 ] = _vC.x;
		modifiedAttributeArray[ c * 3 + 1 ] = _vC.y;
		modifiedAttributeArray[ c * 3 + 2 ] = _vC.z;

}

const geometry = object.geometry;
	const material = object.material;

let a, b, c;
	const index = geometry.index;
	const positionAttribute = geometry.attributes.position;
	const morphPosition = geometry.morphAttributes.position;
	const morphTargetsRelative = geometry.morphTargetsRelative;
	const normalAttribute = geometry.attributes.normal;
	const morphNormal = geometry.morphAttributes.position;

const groups = geometry.groups;
	const drawRange = geometry.drawRange;
	let i, j, il, jl;
	let group;
	let start, end;

const modifiedPosition = new Float32Array( positionAttribute.count * positionAttribute.itemSize );
	const modifiedNormal = new Float32Array( normalAttribute.count * normalAttribute.itemSize );

if ( index !== null ) {

// indexed buffer geometry

if ( Array.isArray( material ) ) {

for ( i = 0, il = groups.length; i < il; i ++ ) {

group = groups[ i ];

start = Math.max( group.start, drawRange.start );
				end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );

for ( j = start, jl = end; j < jl; j += 3 ) {

a = index.getX( j );
					b = index.getX( j + 1 );
					c = index.getX( j + 2 );

_calculateMorphedAttributeData(
						object,
						positionAttribute,
						morphPosition,
						morphTargetsRelative,
						a, b, c,
						modifiedPosition
					);

_calculateMorphedAttributeData(
						object,
						normalAttribute,
						morphNormal,
						morphTargetsRelative,
						a, b, c,
						modifiedNormal
					);

}

} else {

start = Math.max( 0, drawRange.start );
			end = Math.min( index.count, ( drawRange.start + drawRange.count ) );

for ( i = start, il = end; i < il; i += 3 ) {

a = index.getX( i );
				b = index.getX( i + 1 );
				c = index.getX( i + 2 );

_calculateMorphedAttributeData(
					object,
					positionAttribute,
					morphPosition,
					morphTargetsRelative,
					a, b, c,
					modifiedPosition
				);

_calculateMorphedAttributeData(
					object,
					normalAttribute,
					morphNormal,
					morphTargetsRelative,
					a, b, c,
					modifiedNormal
				);

}

} else {

// non-indexed buffer geometry

if ( Array.isArray( material ) ) {

for ( i = 0, il = groups.length; i < il; i ++ ) {

group = groups[ i ];

start = Math.max( group.start, drawRange.start );
				end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );

for ( j = start, jl = end; j < jl; j += 3 ) {

a = j;
					b = j + 1;
					c = j + 2;

_calculateMorphedAttributeData(
						object,
						positionAttribute,
						morphPosition,
						morphTargetsRelative,
						a, b, c,
						modifiedPosition
					);

_calculateMorphedAttributeData(
						object,
						normalAttribute,
						morphNormal,
						morphTargetsRelative,
						a, b, c,
						modifiedNormal
					);

}

} else {

start = Math.max( 0, drawRange.start );
			end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );

for ( i = start, il = end; i < il; i += 3 ) {

a = i;
				b = i + 1;
				c = i + 2;

_calculateMorphedAttributeData(
					object,
					positionAttribute,
					morphPosition,
					morphTargetsRelative,
					a, b, c,
					modifiedPosition
				);

_calculateMorphedAttributeData(
					object,
					normalAttribute,
					morphNormal,
					morphTargetsRelative,
					a, b, c,
					modifiedNormal
				);

}

const morphedPositionAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.Float32BufferAttribute( modifiedPosition, 3 );
	const morphedNormalAttribute = new three__WEBPACK_IMPORTED_MODULE_0__.Float32BufferAttribute( modifiedNormal, 3 );

return {

positionAttribute: positionAttribute,
		normalAttribute: normalAttribute,
		morphedPositionAttribute: morphedPositionAttribute,
		morphedNormalAttribute: morphedNormalAttribute

};

}

function mergeGroups( geometry ) {

if ( geometry.groups.length === 0 ) {

console.warn( 'THREE.BufferGeometryUtils.mergeGroups(): No groups are defined. Nothing to merge.' );
		return geometry;

}

let groups = geometry.groups;

// sort groups by material index

groups = groups.sort( ( a, b ) => {

if ( a.materialIndex !== b.materialIndex ) return a.materialIndex - b.materialIndex;

return a.start - b.start;

} );

// create index for non-indexed geometries

if ( geometry.getIndex() === null ) {

const positionAttribute = geometry.getAttribute( 'position' );
		const indices = [];

for ( let i = 0; i < positionAttribute.count; i += 3 ) {

indices.push( i, i + 1, i + 2 );

}

geometry.setIndex( indices );

}

// sort index

const index = geometry.getIndex();

const newIndices = [];

for ( let i = 0; i < groups.length; i ++ ) {

const group = groups[ i ];

const groupStart = group.start;
		const groupLength = groupStart + group.count;

for ( let j = groupStart; j < groupLength; j ++ ) {

newIndices.push( index.getX( j ) );

}

geometry.dispose(); // Required to force buffer recreation
	geometry.setIndex( newIndices );

// update groups indices

let start = 0;

for ( let i = 0; i < groups.length; i ++ ) {

const group = groups[ i ];

group.start = start;
		start += group.count;

}

// merge groups

let currentGroup = groups[ 0 ];

geometry.groups = [ currentGroup ];

for ( let i = 1; i < groups.length; i ++ ) {

const group = groups[ i ];

if ( currentGroup.materialIndex === group.materialIndex ) {

currentGroup.count += group.count;

} else {

currentGroup = group;
			geometry.groups.push( currentGroup );

}

return geometry;

}

// Creates a new, non-indexed geometry with smooth normals everywhere except faces that meet at
// an angle greater than the crease angle.
function toCreasedNormals( geometry, creaseAngle = Math.PI / 3 /* 60 degrees */ ) {

const creaseDot = Math.cos( creaseAngle );
	const hashMultiplier = ( 1 + 1e-10 ) * 1e2;

// reusable vertors
	const verts = [ new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(), new three__WEBPACK_IMPORTED_MODULE_0__.Vector3(), new three__WEBPACK_IMPORTED_MODULE_0__.Vector3() ];
	const tempVec1 = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const tempVec2 = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const tempNorm = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();
	const tempNorm2 = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3();

// hashes a vector
	function hashVertex( v ) {

const x = ~ ~ ( v.x * hashMultiplier );
		const y = ~ ~ ( v.y * hashMultiplier );
		const z = ~ ~ ( v.z * hashMultiplier );
		return `${x},${y},${z}`;

}

const resultGeometry = geometry.toNonIndexed();
	const posAttr = resultGeometry.attributes.position;
	const vertexMap = {};

// find all the normals shared by commonly located vertices
	for ( let i = 0, l = posAttr.count / 3; i < l; i ++ ) {

const i3 = 3 * i;
		const a = verts[ 0 ].fromBufferAttribute( posAttr, i3 + 0 );
		const b = verts[ 1 ].fromBufferAttribute( posAttr, i3 + 1 );
		const c = verts[ 2 ].fromBufferAttribute( posAttr, i3 + 2 );

tempVec1.subVectors( c, b );
		tempVec2.subVectors( a, b );

// add the normal to the map for all vertices
		const normal = new three__WEBPACK_IMPORTED_MODULE_0__.Vector3().crossVectors( tempVec1, tempVec2 ).normalize();
		for ( let n = 0; n < 3; n ++ ) {

const vert = verts[ n ];
			const hash = hashVertex( vert );
			if ( ! ( hash in vertexMap ) ) {

vertexMap[ hash ] = [];

}

vertexMap[ hash ].push( normal );

}

// average normals from all vertices that share a common location if they are within the
	// provided crease threshold
	const normalArray = new Float32Array( posAttr.count * 3 );
	const normAttr = new three__WEBPACK_IMPORTED_MODULE_0__.BufferAttribute( normalArray, 3, false );
	for ( let i = 0, l = posAttr.count / 3; i < l; i ++ ) {

// get the face normal for this vertex
		const i3 = 3 * i;
		const a = verts[ 0 ].fromBufferAttribute( posAttr, i3 + 0 );
		const b = verts[ 1 ].fromBufferAttribute( posAttr, i3 + 1 );
		const c = verts[ 2 ].fromBufferAttribute( posAttr, i3 + 2 );

tempVec1.subVectors( c, b );
		tempVec2.subVectors( a, b );

tempNorm.crossVectors( tempVec1, tempVec2 ).normalize();

// average all normals that meet the threshold and set the normal value
		for ( let n = 0; n < 3; n ++ ) {

const vert = verts[ n ];
			const hash = hashVertex( vert );
			const otherNormals = vertexMap[ hash ];
			tempNorm2.set( 0, 0, 0 );

for ( let k = 0, lk = otherNormals.length; k < lk; k ++ ) {

const otherNorm = otherNormals[ k ];
				if ( tempNorm.dot( otherNorm ) > creaseDot ) {

tempNorm2.add( otherNorm );

}

tempNorm2.normalize();
			normAttr.setXYZ( i3 + n, tempNorm2.x, tempNorm2.y, tempNorm2.z );

}

resultGeometry.setAttribute( 'normal', normAttr );
	return resultGeometry;

}

function mergeBufferGeometries( geometries, useGroups = false ) {

console.warn( 'THREE.BufferGeometryUtils: mergeBufferGeometries() has been renamed to mergeGeometries().' ); // @deprecated, r151
	return mergeGeometries( geometries, useGroups );

}

function mergeBufferAttributes( attributes ) {

console.warn( 'THREE.BufferGeometryUtils: mergeBufferAttributes() has been renamed to mergeAttributes().' ); // @deprecated, r151
	return mergeAttributes( attributes );

}

/***/ })

/******/ 	});
/************************************************************************/
/******/ 	// The module cache
/******/ 	var __webpack_module_cache__ = {};
/******/ 	
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/ 		// Check if module is in cache
/******/ 		var cachedModule = __webpack_module_cache__[moduleId];
/******/ 		if (cachedModule !== undefined) {
/******/ 			return cachedModule.exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = __webpack_module_cache__[moduleId] = {
/******/ 			// no module.id needed
/******/ 			// no module.loaded needed
/******/ 			exports: {}
/******/ 		};
/******/ 	
/******/ 		// Execute the module function
/******/ 		__webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/ 	
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/ 	
/************************************************************************/
/******/ 	/* webpack/runtime/compat get default export */
/******/ 	(() => {
/******/ 		// getDefaultExport function for compatibility with non-harmony modules
/******/ 		__webpack_require__.n = (module) => {
/******/ 			var getter = module && module.__esModule ?
/******/ 				() => (module['default']) :
/******/ 				() => (module);
/******/ 			__webpack_require__.d(getter, { a: getter });
/******/ 			return getter;
/******/ 		};
/******/ 	})();
/******/ 	
/******/ 	/* webpack/runtime/define property getters */
/******/ 	(() => {
/******/ 		// define getter functions for harmony exports
/******/ 		__webpack_require__.d = (exports, definition) => {
/******/ 			for(var key in definition) {
/******/ 				if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
/******/ 					Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
/******/ 				}
/******/ 			}
/******/ 		};
/******/ 	})();
/******/ 	
/******/ 	/* webpack/runtime/hasOwnProperty shorthand */
/******/ 	(() => {
/******/ 		__webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
/******/ 	})();
/******/ 	
/******/ 	/* webpack/runtime/make namespace object */
/******/ 	(() => {
/******/ 		// define __esModule on exports
/******/ 		__webpack_require__.r = (exports) => {
/******/ 			if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ 				Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ 			}
/******/ 			Object.defineProperty(exports, '__esModule', { value: true });
/******/ 		};
/******/ 	})();
/******/ 	
/************************************************************************/
var __webpack_exports__ = {};
// This entry need to be wrapped in an IIFE because it need to be in strict mode.
(() => {
"use strict";
/*!*********************!*\
  !*** ./dist/app.js ***!
  \*********************/
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var three__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! three */ "./node_modules/three/build/three.module.js");
/* harmony import */ var three_examples_jsm_loaders_GLTFLoader__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! three/examples/jsm/loaders/GLTFLoader */ "./node_modules/three/examples/jsm/loaders/GLTFLoader.js");
/* harmony import */ var three_examples_jsm_controls_OrbitControls__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! three/examples/jsm/controls/OrbitControls */ "./node_modules/three/examples/jsm/controls/OrbitControls.js");
/* harmony import */ var three_examples_jsm_postprocessing_EffectComposer_js__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! three/examples/jsm/postprocessing/EffectComposer.js */ "./node_modules/three/examples/jsm/postprocessing/EffectComposer.js");
/* harmony import */ var three_examples_jsm_postprocessing_RenderPass_js__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! three/examples/jsm/postprocessing/RenderPass.js */ "./node_modules/three/examples/jsm/postprocessing/RenderPass.js");
/* harmony import */ var three_examples_jsm_postprocessing_OutlinePass_js__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! three/examples/jsm/postprocessing/OutlinePass.js */ "./node_modules/three/examples/jsm/postprocessing/OutlinePass.js");
/* harmony import */ var gsap__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! gsap */ "./node_modules/gsap/index.js");
/* harmony import */ var gsap_ScrollTrigger__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! gsap/ScrollTrigger */ "./node_modules/gsap/ScrollTrigger.js");
/* harmony import */ var gsap_TextPlugin__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! gsap/TextPlugin */ "./node_modules/gsap/TextPlugin.js");
/* harmony import */ var gsap_SplitText__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! gsap/SplitText */ "./node_modules/gsap/SplitText.js");
/* harmony import */ var gsap_CSSRulePlugin__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! gsap/CSSRulePlugin */ "./node_modules/gsap/CSSRulePlugin.js");
/* harmony import */ var stats_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! stats.js */ "./node_modules/stats.js/build/stats.min.js");
/* harmony import */ var stats_js__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(stats_js__WEBPACK_IMPORTED_MODULE_1__);

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.defaults({ ease: "ease" });

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.config({
    nullTargetWarn: false,
    force3D: false,
    autoSleep: 60
});

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.registerPlugin(gsap_ScrollTrigger__WEBPACK_IMPORTED_MODULE_2__.ScrollTrigger, gsap_SplitText__WEBPACK_IMPORTED_MODULE_3__.SplitText, gsap_TextPlugin__WEBPACK_IMPORTED_MODULE_4__.TextPlugin, gsap_CSSRulePlugin__WEBPACK_IMPORTED_MODULE_5__.CSSRulePlugin);

console.log("Main started")
 
let scene, renderer, camera, clock, oldElapsedTime, world, textureLoader, objectsToUpdate, staticBody, 
environmentMap, testbox, boxMaterial, sphere, box, renderTarget, transformControls, orbitControls, shaderMaterial, customOnBeforeCompile,
composer, renderPass, outlinePass, line, phoneScreenTexture, phoneMaterial;

var phone = new three__WEBPACK_IMPORTED_MODULE_6__.Object3D;
var phonegroup = new three__WEBPACK_IMPORTED_MODULE_6__.Group();

let mixer = null;

const manager = new three__WEBPACK_IMPORTED_MODULE_6__.LoadingManager();
const loader = new three_examples_jsm_loaders_GLTFLoader__WEBPACK_IMPORTED_MODULE_7__.GLTFLoader(manager);

let animateId;
let tabIsActive = true;

const scrubvalue = 0; //// For GSAP scroll triggers

const StatsSwitch = false;
const helpers = false; ///// Light helpers / EV BG
const lights = true;

three__WEBPACK_IMPORTED_MODULE_6__.Cache.enabled = true; ///// For caching models to use on other pages

const canvas = document.querySelector("canvas.webgl");

const stats = new (stats_js__WEBPACK_IMPORTED_MODULE_1___default())()
if (StatsSwitch) {
stats.showPanel(0) // 0: fps, 1: ms, 2: mb, 3+: custom
document.body.appendChild(stats.dom)  
}

// Mouse based camera movements
let targetX = 0
let targetY = 0
function calcTarget(event){
targetX = (event.clientX - windowHalfX) * .014;
targetY = (event.clientY) * .009;
}
setTimeout(() => {
document.addEventListener("mousemove",calcTarget)
}, 0);
// Mouse parralax
let tarXNegCamPosX = 0
let tarYNegCamPosY = 0

function isElementInViewport(el) {
    const rect = el.getBoundingClientRect();
    return (
        rect.bottom >= 0 &&
        rect.right >= 0 &&
        rect.top <= (window.innerHeight || document.documentElement.clientHeight) &&
        rect.left <= (window.innerWidth || document.documentElement.clientWidth)
    );
}

// Page Visibility API to track if the tab is active/inactive
document.addEventListener("visibilitychange", function() {
    if (document.hidden) {
        tabIsActive = false;
    } else {
        tabIsActive = true;
    }
});

function initWebgl() {

camera = new three__WEBPACK_IMPORTED_MODULE_6__.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 100 );
				camera.position.z = 30;

scene = new three__WEBPACK_IMPORTED_MODULE_6__.Scene();

renderer = new three__WEBPACK_IMPORTED_MODULE_6__.WebGLRenderer({
                    canvas: canvas,
                    powerPreference: "high-performance",
                    antialias: true,
                    alpha: true,
                });

//// Outlines

composer = new three_examples_jsm_postprocessing_EffectComposer_js__WEBPACK_IMPORTED_MODULE_8__.EffectComposer(renderer);
                composer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
                composer.setSize(sizes.width, sizes.height);

// render pass
                renderPass = new three_examples_jsm_postprocessing_RenderPass_js__WEBPACK_IMPORTED_MODULE_9__.RenderPass(scene, camera);
                composer.addPass(renderPass);
                
                // outline pass
                outlinePass = new three_examples_jsm_postprocessing_OutlinePass_js__WEBPACK_IMPORTED_MODULE_10__.OutlinePass(new three__WEBPACK_IMPORTED_MODULE_6__.Vector2(sizes.width, sizes.height), scene, camera);
                composer.addPass(outlinePass);
                
                // set objects to outline
                outlinePass.selectedObjects = [phone];
                outlinePass.edgeThickness = 0.5;
                outlinePass.edgeStrength = 5;
                outlinePass.edgeGlow = 0;
                outlinePass.visibleEdgeColor = new three__WEBPACK_IMPORTED_MODULE_6__.Color(0x96B7DC);
                outlinePass.hiddenEdgeColor = new three__WEBPACK_IMPORTED_MODULE_6__.Color(0x000000);

//renderer.toneMapping = 
                //THREE.LinearToneMapping;
                //renderer.toneMappingExposure = 1;
                renderer.setSize(sizes.width, sizes.height);
                renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
                renderer.autoClear = false;

orbitControls = new three_examples_jsm_controls_OrbitControls__WEBPACK_IMPORTED_MODULE_11__.OrbitControls( camera, renderer.domElement );
			    orbitControls.minDistance = 30;
			    orbitControls.maxDistance = 30;
			    orbitControls.enableDamping = true;
                orbitControls.enabled = false;

//initEv();
                initModels();

clock = new three__WEBPACK_IMPORTED_MODULE_6__.Clock();
                oldElapsedTime = 0;

animate();

}

function animate() {
            
                animateId = window.requestAnimationFrame(animate);

if (
                    tabCheckStarted && 
                    !tabIsActive ||
                    !isElementInViewport(canvas)
                ) {
                    console.log("Loop Stopped");
                    return;
                }
            
                console.log("Loop Running");
                        
                        
                            tarXNegCamPosX = targetX - camera.position.x;
                            tarYNegCamPosY = targetY - camera.position.y;
                        
                                if (Math.abs(tarXNegCamPosX) > .2 || Math.abs(tarYNegCamPosY) > .2) {
                                    camera.position.x += .1 * (tarXNegCamPosX / 2);
                                    camera.position.y += .1 * (tarYNegCamPosY / 2);
                                }
                            
                        
                            // Update controls
                            orbitControls.update();

//phoneMaterial.map.needsUpdate = true;
                        
                            ///Outlines
                            composer.render();
                            
                        
                            if (StatsSwitch) {
                                stats.end();
                            }
                        
                            
            } 
            
            
            let sizes = {
                width: window.innerWidth,
                height: window.innerHeight
            };
            
            let windowHalfX = window.innerWidth / 2;
            let windowHalfY = window.innerHeight / 2;
            
            initWebgl();
function initModels() {
    console.log("Models started");

let windowHalfX = window.innerWidth / 2;
    let windowHalfY = window.innerHeight / 2;

let customModelURL = null; // Global variable to hold user's file
    let currentModel = null; // variable to hold the current model

function isModelCached(modelUrl) {
        const cachedItem = three__WEBPACK_IMPORTED_MODULE_6__.Cache.get(modelUrl);

if (cachedItem) {
            console.log(`Model ${modelUrl} is cached.`);
            return true;
        } else {
            console.log(`Model ${modelUrl} is not cached.`);
            return false;
        }
    }

if (window.innerWidth > 991) {
        ////// Responsive responsible loading ®

// Load the Lottie script
        const lottieScript = document.createElement('script');
        lottieScript.src = 'https://cdnjs.cloudflare.com/ajax/libs/bodymovin/5.12.2/lottie.min.js';
        document.head.appendChild(lottieScript);

// Wait for the Lottie script to load
        lottieScript.addEventListener('load', function () {
            // Execute the desktop model code here
            loadModels();
        });
    }

function loadModels() {
        let modelsToLoadDesktop = [];

// Use customModelURL if it exists, otherwise use the default URL
        let modelURL = customModelURL ? customModelURL : "https://raw.githubusercontent.com/kujira22/kujira_webgl/master/Mita/Mita_phone10.glb";

modelsToLoadDesktop = [
            loader.loadAsync(modelURL)
        ];

loadDesktopModels(modelsToLoadDesktop);
        console.log('You are loading desktop models');
    }

function loadDesktopModels(modelsToLoadDesktop) {
        Promise.all(modelsToLoadDesktop)
            .then(models => {
                currentModel = models[0].scene; // update the current model
                
                phone.add(currentModel);
            
            
            //// Testing the cache
            //isModelCached("https://raw.githubusercontent.com/kujira22/kujira_webgl/master/Mita/Mita_phone2.glb");

phone.scale.set(2.5, 2.5, 2.5);
               phone.position.y = 0;
               phone.position.x = 0;
               
               phone.rotation.y = Math.PI*1.95;
               phone.rotation.x = -Math.PI /8;
               //phone.rotation.z = -Math.PI /8;

const phoneCanvas = document.createElement('canvas');
            phoneCanvas.width = 1920;  // You may need to adjust these dimensions to fit the phone's proportions
            phoneCanvas.height = 1920;
            const phoneContext = phoneCanvas.getContext('2d');
            
            const animation = bodymovin.loadAnimation({
                container: document.getElementById('phoneCanvas'),  // Can be replaced with the phoneCanvas itself if necessary
                renderer: 'canvas',
                rendererSettings: {
                    context: phoneContext
                },
                loop: true,
                autoplay: false,  // We control the playback with scroll
                path: "https://raw.githubusercontent.com/kujira22/kujira_webgl/master/Mita/json/screensV16.json"
            });

phoneScreenTexture = new three__WEBPACK_IMPORTED_MODULE_6__.CanvasTexture(phoneCanvas);
            phoneMaterial = new three__WEBPACK_IMPORTED_MODULE_6__.MeshBasicMaterial({ map: phoneScreenTexture });

phoneScreenTexture.wrapS = three__WEBPACK_IMPORTED_MODULE_6__.ClampToEdgeWrapping;
            phoneScreenTexture.wrapT = three__WEBPACK_IMPORTED_MODULE_6__.ClampToEdgeWrapping;
            phoneScreenTexture.flipY = false;

phoneScreenTexture.offset.set(0, 0);  // Shifts the texture. Default is (0,0).
            phoneScreenTexture.repeat.set(1, 1);  // Default is (1,1).

phone.traverse(child => {
                if(child.material && child.material.name === "Screen"){
                    child.material = phoneMaterial;
                }
            });

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.to({}, {
                scrollTrigger: {
                    trigger: "#trigger",
                    start: "top top",
                    end: "bottom bottom",
                    scrub: true,
                    onUpdate: (self) => {
                        const progress = self.progress;
                        const totalFrames = animation.totalFrames;
                        const currentFrame = Math.round(progress * totalFrames);
                        animation.goToAndStop(currentFrame, true);
                        
                        // Since the Lottie animation is updated, update the Three.js texture as well
                        phoneMaterial.map.needsUpdate = true;
                    }
                }
            });

scene.add(phone);

phonegroup.add(phone);
            scene.add(phonegroup);

line = new three__WEBPACK_IMPORTED_MODULE_6__.MeshBasicMaterial({
                color: 0xE1FEFF,
                toneMapped: true,
                //transparent: true,
            });

phone.traverse(child => {
                if(child.material && child.material.name === "Line"){
                    child.material = line;
                }
            });

}
            
            // Initialize animations for all specified percentages
            const spinPercentages = [[-50, 20], [90, 300]];
            spinPercentages.forEach(([start, end]) => spinAnimationForTrigger(start, end));

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.to(phone.rotation, {
                x: Math.PI / 30,    
                ease: "none",
                scrollTrigger: {
                    trigger: "#trigger",
                    start: "top top",       
                    end: "bottom bottom",   
                    scrub: scrubvalue
                }
            });

gsap__WEBPACK_IMPORTED_MODULE_0__.gsap.to(phonegroup.rotation, {
                y: -Math.PI / 8,    
                ease: "none",
                scrollTrigger: {
                    trigger: "#trigger",
                    start: "top top",       
                    end: "bottom bottom",   
                    scrub: scrubvalue
                }
            });

});
    }
}
//Responsive code

window.addEventListener("resize", () => {
    // Update sizes

if (window.innerWidth < 768) {

} else {
     
    sizes.width = window.innerWidth;
    sizes.height = window.innerHeight;

windowHalfX = window.innerWidth / 2;
    windowHalfY = window.innerHeight / 2;
    
    // Update camera
    camera.aspect = sizes.width / sizes.height;
    camera.updateProjectionMatrix();
    // Update renderer
    renderer.setSize(sizes.width, sizes.height);
    renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));

composer.setSize(sizes.width, sizes.height);
    composer.setPixelRatio(Math.min(window.devicePixelRatio, 2));

}
    
});

})();

/******/ })()
;
//# sourceMappingURL=app.js.map