(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "three", "../loaders/TGALoader.js"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("three"), require("../loaders/TGALoader.js"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.three, global.TGALoader);
    global.ColladaLoader = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _three, _TGALoader) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.ColladaLoader = void 0;

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  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); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } Object.defineProperty(subClass, "prototype", { value: Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }), writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }

  function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

  function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

  function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

  function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

  var ColladaLoader = /*#__PURE__*/function (_Loader) {
    _inherits(ColladaLoader, _Loader);

    var _super = _createSuper(ColladaLoader);

    function ColladaLoader(manager) {
      _classCallCheck(this, ColladaLoader);

      return _super.call(this, manager);
    }

    _createClass(ColladaLoader, [{
      key: "load",
      value: function load(url, onLoad, onProgress, onError) {
        var scope = this;
        var path = scope.path === '' ? _three.LoaderUtils.extractUrlBase(url) : scope.path;
        var loader = new _three.FileLoader(scope.manager);
        loader.setPath(scope.path);
        loader.setRequestHeader(scope.requestHeader);
        loader.setWithCredentials(scope.withCredentials);
        loader.load(url, function (text) {
          try {
            onLoad(scope.parse(text, path));
          } catch (e) {
            if (onError) {
              onError(e);
            } else {
              console.error(e);
            }

            scope.manager.itemError(url);
          }
        }, onProgress, onError);
      }
    }, {
      key: "parse",
      value: function parse(text, path) {
        function getElementsByTagName(xml, name) {
          // Non recursive xml.getElementsByTagName() ...
          var array = [];
          var childNodes = xml.childNodes;

          for (var i = 0, l = childNodes.length; i < l; i++) {
            var child = childNodes[i];

            if (child.nodeName === name) {
              array.push(child);
            }
          }

          return array;
        }

        function parseStrings(text) {
          if (text.length === 0) return [];
          var parts = text.trim().split(/\s+/);
          var array = new Array(parts.length);

          for (var i = 0, l = parts.length; i < l; i++) {
            array[i] = parts[i];
          }

          return array;
        }

        function parseFloats(text) {
          if (text.length === 0) return [];
          var parts = text.trim().split(/\s+/);
          var array = new Array(parts.length);

          for (var i = 0, l = parts.length; i < l; i++) {
            array[i] = parseFloat(parts[i]);
          }

          return array;
        }

        function parseInts(text) {
          if (text.length === 0) return [];
          var parts = text.trim().split(/\s+/);
          var array = new Array(parts.length);

          for (var i = 0, l = parts.length; i < l; i++) {
            array[i] = parseInt(parts[i]);
          }

          return array;
        }

        function parseId(text) {
          return text.substring(1);
        }

        function generateId() {
          return 'three_default_' + count++;
        }

        function isEmpty(object) {
          return Object.keys(object).length === 0;
        } // asset


        function parseAsset(xml) {
          return {
            unit: parseAssetUnit(getElementsByTagName(xml, 'unit')[0]),
            upAxis: parseAssetUpAxis(getElementsByTagName(xml, 'up_axis')[0])
          };
        }

        function parseAssetUnit(xml) {
          if (xml !== undefined && xml.hasAttribute('meter') === true) {
            return parseFloat(xml.getAttribute('meter'));
          } else {
            return 1; // default 1 meter
          }
        }

        function parseAssetUpAxis(xml) {
          return xml !== undefined ? xml.textContent : 'Y_UP';
        } // library


        function parseLibrary(xml, libraryName, nodeName, parser) {
          var library = getElementsByTagName(xml, libraryName)[0];

          if (library !== undefined) {
            var elements = getElementsByTagName(library, nodeName);

            for (var i = 0; i < elements.length; i++) {
              parser(elements[i]);
            }
          }
        }

        function buildLibrary(data, builder) {
          for (var name in data) {
            var object = data[name];
            object.build = builder(data[name]);
          }
        } // get


        function getBuild(data, builder) {
          if (data.build !== undefined) return data.build;
          data.build = builder(data);
          return data.build;
        } // animation


        function parseAnimation(xml) {
          var data = {
            sources: {},
            samplers: {},
            channels: {}
          };
          var hasChildren = false;

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;
            var id = void 0;

            switch (child.nodeName) {
              case 'source':
                id = child.getAttribute('id');
                data.sources[id] = parseSource(child);
                break;

              case 'sampler':
                id = child.getAttribute('id');
                data.samplers[id] = parseAnimationSampler(child);
                break;

              case 'channel':
                id = child.getAttribute('target');
                data.channels[id] = parseAnimationChannel(child);
                break;

              case 'animation':
                // hierarchy of related animations
                parseAnimation(child);
                hasChildren = true;
                break;

              default:
                console.log(child);
            }
          }

          if (hasChildren === false) {
            // since 'id' attributes can be optional, it's necessary to generate a UUID for unqiue assignment
            library.animations[xml.getAttribute('id') || _three.MathUtils.generateUUID()] = data;
          }
        }

        function parseAnimationSampler(xml) {
          var data = {
            inputs: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'input':
                var id = parseId(child.getAttribute('source'));
                var semantic = child.getAttribute('semantic');
                data.inputs[semantic] = id;
                break;
            }
          }

          return data;
        }

        function parseAnimationChannel(xml) {
          var data = {};
          var target = xml.getAttribute('target'); // parsing SID Addressing Syntax

          var parts = target.split('/');
          var id = parts.shift();
          var sid = parts.shift(); // check selection syntax

          var arraySyntax = sid.indexOf('(') !== -1;
          var memberSyntax = sid.indexOf('.') !== -1;

          if (memberSyntax) {
            //  member selection access
            parts = sid.split('.');
            sid = parts.shift();
            data.member = parts.shift();
          } else if (arraySyntax) {
            // array-access syntax. can be used to express fields in one-dimensional vectors or two-dimensional matrices.
            var indices = sid.split('(');
            sid = indices.shift();

            for (var i = 0; i < indices.length; i++) {
              indices[i] = parseInt(indices[i].replace(/\)/, ''));
            }

            data.indices = indices;
          }

          data.id = id;
          data.sid = sid;
          data.arraySyntax = arraySyntax;
          data.memberSyntax = memberSyntax;
          data.sampler = parseId(xml.getAttribute('source'));
          return data;
        }

        function buildAnimation(data) {
          var tracks = [];
          var channels = data.channels;
          var samplers = data.samplers;
          var sources = data.sources;

          for (var target in channels) {
            if (channels.hasOwnProperty(target)) {
              var channel = channels[target];
              var sampler = samplers[channel.sampler];
              var inputId = sampler.inputs.INPUT;
              var outputId = sampler.inputs.OUTPUT;
              var inputSource = sources[inputId];
              var outputSource = sources[outputId];
              var animation = buildAnimationChannel(channel, inputSource, outputSource);
              createKeyframeTracks(animation, tracks);
            }
          }

          return tracks;
        }

        function getAnimation(id) {
          return getBuild(library.animations[id], buildAnimation);
        }

        function buildAnimationChannel(channel, inputSource, outputSource) {
          var node = library.nodes[channel.id];
          var object3D = getNode(node.id);
          var transform = node.transforms[channel.sid];
          var defaultMatrix = node.matrix.clone().transpose();
          var time, stride;
          var i, il, j, jl;
          var data = {}; // the collada spec allows the animation of data in various ways.
          // depending on the transform type (matrix, translate, rotate, scale), we execute different logic

          switch (transform) {
            case 'matrix':
              for (i = 0, il = inputSource.array.length; i < il; i++) {
                time = inputSource.array[i];
                stride = i * outputSource.stride;
                if (data[time] === undefined) data[time] = {};

                if (channel.arraySyntax === true) {
                  var value = outputSource.array[stride];
                  var index = channel.indices[0] + 4 * channel.indices[1];
                  data[time][index] = value;
                } else {
                  for (j = 0, jl = outputSource.stride; j < jl; j++) {
                    data[time][j] = outputSource.array[stride + j];
                  }
                }
              }

              break;

            case 'translate':
              console.warn('THREE.ColladaLoader: Animation transform type "%s" not yet implemented.', transform);
              break;

            case 'rotate':
              console.warn('THREE.ColladaLoader: Animation transform type "%s" not yet implemented.', transform);
              break;

            case 'scale':
              console.warn('THREE.ColladaLoader: Animation transform type "%s" not yet implemented.', transform);
              break;
          }

          var keyframes = prepareAnimationData(data, defaultMatrix);
          var animation = {
            name: object3D.uuid,
            keyframes: keyframes
          };
          return animation;
        }

        function prepareAnimationData(data, defaultMatrix) {
          var keyframes = []; // transfer data into a sortable array

          for (var time in data) {
            keyframes.push({
              time: parseFloat(time),
              value: data[time]
            });
          } // ensure keyframes are sorted by time


          keyframes.sort(ascending); // now we clean up all animation data, so we can use them for keyframe tracks

          for (var i = 0; i < 16; i++) {
            transformAnimationData(keyframes, i, defaultMatrix.elements[i]);
          }

          return keyframes; // array sort function

          function ascending(a, b) {
            return a.time - b.time;
          }
        }

        var position = new _three.Vector3();
        var scale = new _three.Vector3();
        var quaternion = new _three.Quaternion();

        function createKeyframeTracks(animation, tracks) {
          var keyframes = animation.keyframes;
          var name = animation.name;
          var times = [];
          var positionData = [];
          var quaternionData = [];
          var scaleData = [];

          for (var i = 0, l = keyframes.length; i < l; i++) {
            var keyframe = keyframes[i];
            var time = keyframe.time;
            var value = keyframe.value;
            matrix.fromArray(value).transpose();
            matrix.decompose(position, quaternion, scale);
            times.push(time);
            positionData.push(position.x, position.y, position.z);
            quaternionData.push(quaternion.x, quaternion.y, quaternion.z, quaternion.w);
            scaleData.push(scale.x, scale.y, scale.z);
          }

          if (positionData.length > 0) tracks.push(new _three.VectorKeyframeTrack(name + '.position', times, positionData));
          if (quaternionData.length > 0) tracks.push(new _three.QuaternionKeyframeTrack(name + '.quaternion', times, quaternionData));
          if (scaleData.length > 0) tracks.push(new _three.VectorKeyframeTrack(name + '.scale', times, scaleData));
          return tracks;
        }

        function transformAnimationData(keyframes, property, defaultValue) {
          var keyframe;
          var empty = true;
          var i, l; // check, if values of a property are missing in our keyframes

          for (i = 0, l = keyframes.length; i < l; i++) {
            keyframe = keyframes[i];

            if (keyframe.value[property] === undefined) {
              keyframe.value[property] = null; // mark as missing
            } else {
              empty = false;
            }
          }

          if (empty === true) {
            // no values at all, so we set a default value
            for (i = 0, l = keyframes.length; i < l; i++) {
              keyframe = keyframes[i];
              keyframe.value[property] = defaultValue;
            }
          } else {
            // filling gaps
            createMissingKeyframes(keyframes, property);
          }
        }

        function createMissingKeyframes(keyframes, property) {
          var prev, next;

          for (var i = 0, l = keyframes.length; i < l; i++) {
            var keyframe = keyframes[i];

            if (keyframe.value[property] === null) {
              prev = getPrev(keyframes, i, property);
              next = getNext(keyframes, i, property);

              if (prev === null) {
                keyframe.value[property] = next.value[property];
                continue;
              }

              if (next === null) {
                keyframe.value[property] = prev.value[property];
                continue;
              }

              interpolate(keyframe, prev, next, property);
            }
          }
        }

        function getPrev(keyframes, i, property) {
          while (i >= 0) {
            var keyframe = keyframes[i];
            if (keyframe.value[property] !== null) return keyframe;
            i--;
          }

          return null;
        }

        function getNext(keyframes, i, property) {
          while (i < keyframes.length) {
            var keyframe = keyframes[i];
            if (keyframe.value[property] !== null) return keyframe;
            i++;
          }

          return null;
        }

        function interpolate(key, prev, next, property) {
          if (next.time - prev.time === 0) {
            key.value[property] = prev.value[property];
            return;
          }

          key.value[property] = (key.time - prev.time) * (next.value[property] - prev.value[property]) / (next.time - prev.time) + prev.value[property];
        } // animation clips


        function parseAnimationClip(xml) {
          var data = {
            name: xml.getAttribute('id') || 'default',
            start: parseFloat(xml.getAttribute('start') || 0),
            end: parseFloat(xml.getAttribute('end') || 0),
            animations: []
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'instance_animation':
                data.animations.push(parseId(child.getAttribute('url')));
                break;
            }
          }

          library.clips[xml.getAttribute('id')] = data;
        }

        function buildAnimationClip(data) {
          var tracks = [];
          var name = data.name;
          var duration = data.end - data.start || -1;
          var animations = data.animations;

          for (var i = 0, il = animations.length; i < il; i++) {
            var animationTracks = getAnimation(animations[i]);

            for (var j = 0, jl = animationTracks.length; j < jl; j++) {
              tracks.push(animationTracks[j]);
            }
          }

          return new _three.AnimationClip(name, duration, tracks);
        }

        function getAnimationClip(id) {
          return getBuild(library.clips[id], buildAnimationClip);
        } // controller


        function parseController(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'skin':
                // there is exactly one skin per controller
                data.id = parseId(child.getAttribute('source'));
                data.skin = parseSkin(child);
                break;

              case 'morph':
                data.id = parseId(child.getAttribute('source'));
                console.warn('THREE.ColladaLoader: Morph target animation not supported yet.');
                break;
            }
          }

          library.controllers[xml.getAttribute('id')] = data;
        }

        function parseSkin(xml) {
          var data = {
            sources: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'bind_shape_matrix':
                data.bindShapeMatrix = parseFloats(child.textContent);
                break;

              case 'source':
                var id = child.getAttribute('id');
                data.sources[id] = parseSource(child);
                break;

              case 'joints':
                data.joints = parseJoints(child);
                break;

              case 'vertex_weights':
                data.vertexWeights = parseVertexWeights(child);
                break;
            }
          }

          return data;
        }

        function parseJoints(xml) {
          var data = {
            inputs: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'input':
                var semantic = child.getAttribute('semantic');
                var id = parseId(child.getAttribute('source'));
                data.inputs[semantic] = id;
                break;
            }
          }

          return data;
        }

        function parseVertexWeights(xml) {
          var data = {
            inputs: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'input':
                var semantic = child.getAttribute('semantic');
                var id = parseId(child.getAttribute('source'));
                var offset = parseInt(child.getAttribute('offset'));
                data.inputs[semantic] = {
                  id: id,
                  offset: offset
                };
                break;

              case 'vcount':
                data.vcount = parseInts(child.textContent);
                break;

              case 'v':
                data.v = parseInts(child.textContent);
                break;
            }
          }

          return data;
        }

        function buildController(data) {
          var build = {
            id: data.id
          };
          var geometry = library.geometries[build.id];

          if (data.skin !== undefined) {
            build.skin = buildSkin(data.skin); // we enhance the 'sources' property of the corresponding geometry with our skin data

            geometry.sources.skinIndices = build.skin.indices;
            geometry.sources.skinWeights = build.skin.weights;
          }

          return build;
        }

        function buildSkin(data) {
          var BONE_LIMIT = 4;
          var build = {
            joints: [],
            // this must be an array to preserve the joint order
            indices: {
              array: [],
              stride: BONE_LIMIT
            },
            weights: {
              array: [],
              stride: BONE_LIMIT
            }
          };
          var sources = data.sources;
          var vertexWeights = data.vertexWeights;
          var vcount = vertexWeights.vcount;
          var v = vertexWeights.v;
          var jointOffset = vertexWeights.inputs.JOINT.offset;
          var weightOffset = vertexWeights.inputs.WEIGHT.offset;
          var jointSource = data.sources[data.joints.inputs.JOINT];
          var inverseSource = data.sources[data.joints.inputs.INV_BIND_MATRIX];
          var weights = sources[vertexWeights.inputs.WEIGHT.id].array;
          var stride = 0;
          var i, j, l; // procces skin data for each vertex

          for (i = 0, l = vcount.length; i < l; i++) {
            var jointCount = vcount[i]; // this is the amount of joints that affect a single vertex

            var vertexSkinData = [];

            for (j = 0; j < jointCount; j++) {
              var skinIndex = v[stride + jointOffset];
              var weightId = v[stride + weightOffset];
              var skinWeight = weights[weightId];
              vertexSkinData.push({
                index: skinIndex,
                weight: skinWeight
              });
              stride += 2;
            } // we sort the joints in descending order based on the weights.
            // this ensures, we only procced the most important joints of the vertex


            vertexSkinData.sort(descending); // now we provide for each vertex a set of four index and weight values.
            // the order of the skin data matches the order of vertices

            for (j = 0; j < BONE_LIMIT; j++) {
              var d = vertexSkinData[j];

              if (d !== undefined) {
                build.indices.array.push(d.index);
                build.weights.array.push(d.weight);
              } else {
                build.indices.array.push(0);
                build.weights.array.push(0);
              }
            }
          } // setup bind matrix


          if (data.bindShapeMatrix) {
            build.bindMatrix = new _three.Matrix4().fromArray(data.bindShapeMatrix).transpose();
          } else {
            build.bindMatrix = new _three.Matrix4().identity();
          } // process bones and inverse bind matrix data


          for (i = 0, l = jointSource.array.length; i < l; i++) {
            var name = jointSource.array[i];
            var boneInverse = new _three.Matrix4().fromArray(inverseSource.array, i * inverseSource.stride).transpose();
            build.joints.push({
              name: name,
              boneInverse: boneInverse
            });
          }

          return build; // array sort function

          function descending(a, b) {
            return b.weight - a.weight;
          }
        }

        function getController(id) {
          return getBuild(library.controllers[id], buildController);
        } // image


        function parseImage(xml) {
          var data = {
            init_from: getElementsByTagName(xml, 'init_from')[0].textContent
          };
          library.images[xml.getAttribute('id')] = data;
        }

        function buildImage(data) {
          if (data.build !== undefined) return data.build;
          return data.init_from;
        }

        function getImage(id) {
          var data = library.images[id];

          if (data !== undefined) {
            return getBuild(data, buildImage);
          }

          console.warn('THREE.ColladaLoader: Couldn\'t find image with ID:', id);
          return null;
        } // effect


        function parseEffect(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'profile_COMMON':
                data.profile = parseEffectProfileCOMMON(child);
                break;
            }
          }

          library.effects[xml.getAttribute('id')] = data;
        }

        function parseEffectProfileCOMMON(xml) {
          var data = {
            surfaces: {},
            samplers: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'newparam':
                parseEffectNewparam(child, data);
                break;

              case 'technique':
                data.technique = parseEffectTechnique(child);
                break;

              case 'extra':
                data.extra = parseEffectExtra(child);
                break;
            }
          }

          return data;
        }

        function parseEffectNewparam(xml, data) {
          var sid = xml.getAttribute('sid');

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'surface':
                data.surfaces[sid] = parseEffectSurface(child);
                break;

              case 'sampler2D':
                data.samplers[sid] = parseEffectSampler(child);
                break;
            }
          }
        }

        function parseEffectSurface(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'init_from':
                data.init_from = child.textContent;
                break;
            }
          }

          return data;
        }

        function parseEffectSampler(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'source':
                data.source = child.textContent;
                break;
            }
          }

          return data;
        }

        function parseEffectTechnique(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'constant':
              case 'lambert':
              case 'blinn':
              case 'phong':
                data.type = child.nodeName;
                data.parameters = parseEffectParameters(child);
                break;

              case 'extra':
                data.extra = parseEffectExtra(child);
                break;
            }
          }

          return data;
        }

        function parseEffectParameters(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'emission':
              case 'diffuse':
              case 'specular':
              case 'bump':
              case 'ambient':
              case 'shininess':
              case 'transparency':
                data[child.nodeName] = parseEffectParameter(child);
                break;

              case 'transparent':
                data[child.nodeName] = {
                  opaque: child.getAttribute('opaque'),
                  data: parseEffectParameter(child)
                };
                break;
            }
          }

          return data;
        }

        function parseEffectParameter(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'color':
                data[child.nodeName] = parseFloats(child.textContent);
                break;

              case 'float':
                data[child.nodeName] = parseFloat(child.textContent);
                break;

              case 'texture':
                data[child.nodeName] = {
                  id: child.getAttribute('texture'),
                  extra: parseEffectParameterTexture(child)
                };
                break;
            }
          }

          return data;
        }

        function parseEffectParameterTexture(xml) {
          var data = {
            technique: {}
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'extra':
                parseEffectParameterTextureExtra(child, data);
                break;
            }
          }

          return data;
        }

        function parseEffectParameterTextureExtra(xml, data) {
          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'technique':
                parseEffectParameterTextureExtraTechnique(child, data);
                break;
            }
          }
        }

        function parseEffectParameterTextureExtraTechnique(xml, data) {
          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'repeatU':
              case 'repeatV':
              case 'offsetU':
              case 'offsetV':
                data.technique[child.nodeName] = parseFloat(child.textContent);
                break;

              case 'wrapU':
              case 'wrapV':
                // some files have values for wrapU/wrapV which become NaN via parseInt
                if (child.textContent.toUpperCase() === 'TRUE') {
                  data.technique[child.nodeName] = 1;
                } else if (child.textContent.toUpperCase() === 'FALSE') {
                  data.technique[child.nodeName] = 0;
                } else {
                  data.technique[child.nodeName] = parseInt(child.textContent);
                }

                break;

              case 'bump':
                data[child.nodeName] = parseEffectExtraTechniqueBump(child);
                break;
            }
          }
        }

        function parseEffectExtra(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'technique':
                data.technique = parseEffectExtraTechnique(child);
                break;
            }
          }

          return data;
        }

        function parseEffectExtraTechnique(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'double_sided':
                data[child.nodeName] = parseInt(child.textContent);
                break;

              case 'bump':
                data[child.nodeName] = parseEffectExtraTechniqueBump(child);
                break;
            }
          }

          return data;
        }

        function parseEffectExtraTechniqueBump(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'texture':
                data[child.nodeName] = {
                  id: child.getAttribute('texture'),
                  texcoord: child.getAttribute('texcoord'),
                  extra: parseEffectParameterTexture(child)
                };
                break;
            }
          }

          return data;
        }

        function buildEffect(data) {
          return data;
        }

        function getEffect(id) {
          return getBuild(library.effects[id], buildEffect);
        } // material


        function parseMaterial(xml) {
          var data = {
            name: xml.getAttribute('name')
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'instance_effect':
                data.url = parseId(child.getAttribute('url'));
                break;
            }
          }

          library.materials[xml.getAttribute('id')] = data;
        }

        function getTextureLoader(image) {
          var loader;
          var extension = image.slice((image.lastIndexOf('.') - 1 >>> 0) + 2); // http://www.jstips.co/en/javascript/get-file-extension/

          extension = extension.toLowerCase();

          switch (extension) {
            case 'tga':
              loader = tgaLoader;
              break;

            default:
              loader = textureLoader;
          }

          return loader;
        }

        function buildMaterial(data) {
          var effect = getEffect(data.url);
          var technique = effect.profile.technique;
          var material;

          switch (technique.type) {
            case 'phong':
            case 'blinn':
              material = new _three.MeshPhongMaterial();
              break;

            case 'lambert':
              material = new _three.MeshLambertMaterial();
              break;

            default:
              material = new _three.MeshBasicMaterial();
              break;
          }

          material.name = data.name || '';

          function getTexture(textureObject) {
            var sampler = effect.profile.samplers[textureObject.id];
            var image = null; // get image

            if (sampler !== undefined) {
              var surface = effect.profile.surfaces[sampler.source];
              image = getImage(surface.init_from);
            } else {
              console.warn('THREE.ColladaLoader: Undefined sampler. Access image directly (see #12530).');
              image = getImage(textureObject.id);
            } // create texture if image is avaiable


            if (image !== null) {
              var loader = getTextureLoader(image);

              if (loader !== undefined) {
                var texture = loader.load(image);
                var extra = textureObject.extra;

                if (extra !== undefined && extra.technique !== undefined && isEmpty(extra.technique) === false) {
                  var _technique = extra.technique;
                  texture.wrapS = _technique.wrapU ? _three.RepeatWrapping : _three.ClampToEdgeWrapping;
                  texture.wrapT = _technique.wrapV ? _three.RepeatWrapping : _three.ClampToEdgeWrapping;
                  texture.offset.set(_technique.offsetU || 0, _technique.offsetV || 0);
                  texture.repeat.set(_technique.repeatU || 1, _technique.repeatV || 1);
                } else {
                  texture.wrapS = _three.RepeatWrapping;
                  texture.wrapT = _three.RepeatWrapping;
                }

                return texture;
              } else {
                console.warn('THREE.ColladaLoader: Loader for texture %s not found.', image);
                return null;
              }
            } else {
              console.warn('THREE.ColladaLoader: Couldn\'t create texture with ID:', textureObject.id);
              return null;
            }
          }

          var parameters = technique.parameters;

          for (var key in parameters) {
            var parameter = parameters[key];

            switch (key) {
              case 'diffuse':
                if (parameter.color) material.color.fromArray(parameter.color);
                if (parameter.texture) material.map = getTexture(parameter.texture);
                break;

              case 'specular':
                if (parameter.color && material.specular) material.specular.fromArray(parameter.color);
                if (parameter.texture) material.specularMap = getTexture(parameter.texture);
                break;

              case 'bump':
                if (parameter.texture) material.normalMap = getTexture(parameter.texture);
                break;

              case 'ambient':
                if (parameter.texture) material.lightMap = getTexture(parameter.texture);
                break;

              case 'shininess':
                if (parameter.float && material.shininess) material.shininess = parameter.float;
                break;

              case 'emission':
                if (parameter.color && material.emissive) material.emissive.fromArray(parameter.color);
                if (parameter.texture) material.emissiveMap = getTexture(parameter.texture);
                break;
            }
          } //


          var transparent = parameters['transparent'];
          var transparency = parameters['transparency']; // <transparency> does not exist but <transparent>

          if (transparency === undefined && transparent) {
            transparency = {
              float: 1
            };
          } // <transparent> does not exist but <transparency>


          if (transparent === undefined && transparency) {
            transparent = {
              opaque: 'A_ONE',
              data: {
                color: [1, 1, 1, 1]
              }
            };
          }

          if (transparent && transparency) {
            // handle case if a texture exists but no color
            if (transparent.data.texture) {
              // we do not set an alpha map (see #13792)
              material.transparent = true;
            } else {
              var color = transparent.data.color;

              switch (transparent.opaque) {
                case 'A_ONE':
                  material.opacity = color[3] * transparency.float;
                  break;

                case 'RGB_ZERO':
                  material.opacity = 1 - color[0] * transparency.float;
                  break;

                case 'A_ZERO':
                  material.opacity = 1 - color[3] * transparency.float;
                  break;

                case 'RGB_ONE':
                  material.opacity = color[0] * transparency.float;
                  break;

                default:
                  material.opacity = 1 - transparency.float;
                  console.warn('THREE.ColladaLoader: Invalid opaque type "%s" of transparent tag.', transparent.opaque);
              }

              if (material.opacity < 1) material.transparent = true;
            }
          } //


          if (technique.extra !== undefined && technique.extra.technique !== undefined) {
            var techniques = technique.extra.technique;

            for (var k in techniques) {
              var v = techniques[k];

              switch (k) {
                case 'double_sided':
                  material.side = v === 1 ? _three.DoubleSide : _three.FrontSide;
                  break;

                case 'bump':
                  material.normalMap = getTexture(v.texture);
                  material.normalScale = new _three.Vector2(1, 1);
                  break;
              }
            }
          }

          return material;
        }

        function getMaterial(id) {
          return getBuild(library.materials[id], buildMaterial);
        } // camera


        function parseCamera(xml) {
          var data = {
            name: xml.getAttribute('name')
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'optics':
                data.optics = parseCameraOptics(child);
                break;
            }
          }

          library.cameras[xml.getAttribute('id')] = data;
        }

        function parseCameraOptics(xml) {
          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];

            switch (child.nodeName) {
              case 'technique_common':
                return parseCameraTechnique(child);
            }
          }

          return {};
        }

        function parseCameraTechnique(xml) {
          var data = {};

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];

            switch (child.nodeName) {
              case 'perspective':
              case 'orthographic':
                data.technique = child.nodeName;
                data.parameters = parseCameraParameters(child);
                break;
            }
          }

          return data;
        }

        function parseCameraParameters(xml) {
          var data = {};

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];

            switch (child.nodeName) {
              case 'xfov':
              case 'yfov':
              case 'xmag':
              case 'ymag':
              case 'znear':
              case 'zfar':
              case 'aspect_ratio':
                data[child.nodeName] = parseFloat(child.textContent);
                break;
            }
          }

          return data;
        }

        function buildCamera(data) {
          var camera;

          switch (data.optics.technique) {
            case 'perspective':
              camera = new _three.PerspectiveCamera(data.optics.parameters.yfov, data.optics.parameters.aspect_ratio, data.optics.parameters.znear, data.optics.parameters.zfar);
              break;

            case 'orthographic':
              var ymag = data.optics.parameters.ymag;
              var xmag = data.optics.parameters.xmag;
              var aspectRatio = data.optics.parameters.aspect_ratio;
              xmag = xmag === undefined ? ymag * aspectRatio : xmag;
              ymag = ymag === undefined ? xmag / aspectRatio : ymag;
              xmag *= 0.5;
              ymag *= 0.5;
              camera = new _three.OrthographicCamera(-xmag, xmag, ymag, -ymag, // left, right, top, bottom
              data.optics.parameters.znear, data.optics.parameters.zfar);
              break;

            default:
              camera = new _three.PerspectiveCamera();
              break;
          }

          camera.name = data.name || '';
          return camera;
        }

        function getCamera(id) {
          var data = library.cameras[id];

          if (data !== undefined) {
            return getBuild(data, buildCamera);
          }

          console.warn('THREE.ColladaLoader: Couldn\'t find camera with ID:', id);
          return null;
        } // light


        function parseLight(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'technique_common':
                data = parseLightTechnique(child);
                break;
            }
          }

          library.lights[xml.getAttribute('id')] = data;
        }

        function parseLightTechnique(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'directional':
              case 'point':
              case 'spot':
              case 'ambient':
                data.technique = child.nodeName;
                data.parameters = parseLightParameters(child);
            }
          }

          return data;
        }

        function parseLightParameters(xml) {
          var data = {};

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'color':
                var array = parseFloats(child.textContent);
                data.color = new _three.Color().fromArray(array);
                break;

              case 'falloff_angle':
                data.falloffAngle = parseFloat(child.textContent);
                break;

              case 'quadratic_attenuation':
                var f = parseFloat(child.textContent);
                data.distance = f ? Math.sqrt(1 / f) : 0;
                break;
            }
          }

          return data;
        }

        function buildLight(data) {
          var light;

          switch (data.technique) {
            case 'directional':
              light = new _three.DirectionalLight();
              break;

            case 'point':
              light = new _three.PointLight();
              break;

            case 'spot':
              light = new _three.SpotLight();
              break;

            case 'ambient':
              light = new _three.AmbientLight();
              break;
          }

          if (data.parameters.color) light.color.copy(data.parameters.color);
          if (data.parameters.distance) light.distance = data.parameters.distance;
          return light;
        }

        function getLight(id) {
          var data = library.lights[id];

          if (data !== undefined) {
            return getBuild(data, buildLight);
          }

          console.warn('THREE.ColladaLoader: Couldn\'t find light with ID:', id);
          return null;
        } // geometry


        function parseGeometry(xml) {
          var data = {
            name: xml.getAttribute('name'),
            sources: {},
            vertices: {},
            primitives: []
          };
          var mesh = getElementsByTagName(xml, 'mesh')[0]; // the following tags inside geometry are not supported yet (see https://github.com/mrdoob/three.js/pull/12606): convex_mesh, spline, brep

          if (mesh === undefined) return;

          for (var i = 0; i < mesh.childNodes.length; i++) {
            var child = mesh.childNodes[i];
            if (child.nodeType !== 1) continue;
            var id = child.getAttribute('id');

            switch (child.nodeName) {
              case 'source':
                data.sources[id] = parseSource(child);
                break;

              case 'vertices':
                // data.sources[ id ] = data.sources[ parseId( getElementsByTagName( child, 'input' )[ 0 ].getAttribute( 'source' ) ) ];
                data.vertices = parseGeometryVertices(child);
                break;

              case 'polygons':
                console.warn('THREE.ColladaLoader: Unsupported primitive type: ', child.nodeName);
                break;

              case 'lines':
              case 'linestrips':
              case 'polylist':
              case 'triangles':
                data.primitives.push(parseGeometryPrimitive(child));
                break;

              default:
                console.log(child);
            }
          }

          library.geometries[xml.getAttribute('id')] = data;
        }

        function parseSource(xml) {
          var data = {
            array: [],
            stride: 3
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'float_array':
                data.array = parseFloats(child.textContent);
                break;

              case 'Name_array':
                data.array = parseStrings(child.textContent);
                break;

              case 'technique_common':
                var accessor = getElementsByTagName(child, 'accessor')[0];

                if (accessor !== undefined) {
                  data.stride = parseInt(accessor.getAttribute('stride'));
                }

                break;
            }
          }

          return data;
        }

        function parseGeometryVertices(xml) {
          var data = {};

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;
            data[child.getAttribute('semantic')] = parseId(child.getAttribute('source'));
          }

          return data;
        }

        function parseGeometryPrimitive(xml) {
          var primitive = {
            type: xml.nodeName,
            material: xml.getAttribute('material'),
            count: parseInt(xml.getAttribute('count')),
            inputs: {},
            stride: 0,
            hasUV: false
          };

          for (var i = 0, l = xml.childNodes.length; i < l; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'input':
                var id = parseId(child.getAttribute('source'));
                var semantic = child.getAttribute('semantic');
                var offset = parseInt(child.getAttribute('offset'));
                var set = parseInt(child.getAttribute('set'));
                var inputname = set > 0 ? semantic + set : semantic;
                primitive.inputs[inputname] = {
                  id: id,
                  offset: offset
                };
                primitive.stride = Math.max(primitive.stride, offset + 1);
                if (semantic === 'TEXCOORD') primitive.hasUV = true;
                break;

              case 'vcount':
                primitive.vcount = parseInts(child.textContent);
                break;

              case 'p':
                primitive.p = parseInts(child.textContent);
                break;
            }
          }

          return primitive;
        }

        function groupPrimitives(primitives) {
          var build = {};

          for (var i = 0; i < primitives.length; i++) {
            var primitive = primitives[i];
            if (build[primitive.type] === undefined) build[primitive.type] = [];
            build[primitive.type].push(primitive);
          }

          return build;
        }

        function checkUVCoordinates(primitives) {
          var count = 0;

          for (var i = 0, l = primitives.length; i < l; i++) {
            var primitive = primitives[i];

            if (primitive.hasUV === true) {
              count++;
            }
          }

          if (count > 0 && count < primitives.length) {
            primitives.uvsNeedsFix = true;
          }
        }

        function buildGeometry(data) {
          var build = {};
          var sources = data.sources;
          var vertices = data.vertices;
          var primitives = data.primitives;
          if (primitives.length === 0) return {}; // our goal is to create one buffer geometry for a single type of primitives
          // first, we group all primitives by their type

          var groupedPrimitives = groupPrimitives(primitives);

          for (var type in groupedPrimitives) {
            var primitiveType = groupedPrimitives[type]; // second, ensure consistent uv coordinates for each type of primitives (polylist,triangles or lines)

            checkUVCoordinates(primitiveType); // third, create a buffer geometry for each type of primitives

            build[type] = buildGeometryType(primitiveType, sources, vertices);
          }

          return build;
        }

        function buildGeometryType(primitives, sources, vertices) {
          var build = {};
          var position = {
            array: [],
            stride: 0
          };
          var normal = {
            array: [],
            stride: 0
          };
          var uv = {
            array: [],
            stride: 0
          };
          var uv2 = {
            array: [],
            stride: 0
          };
          var color = {
            array: [],
            stride: 0
          };
          var skinIndex = {
            array: [],
            stride: 4
          };
          var skinWeight = {
            array: [],
            stride: 4
          };
          var geometry = new _three.BufferGeometry();
          var materialKeys = [];
          var start = 0;

          for (var p = 0; p < primitives.length; p++) {
            var primitive = primitives[p];
            var inputs = primitive.inputs; // groups

            var _count = 0;

            switch (primitive.type) {
              case 'lines':
              case 'linestrips':
                _count = primitive.count * 2;
                break;

              case 'triangles':
                _count = primitive.count * 3;
                break;

              case 'polylist':
                for (var g = 0; g < primitive.count; g++) {
                  var vc = primitive.vcount[g];

                  switch (vc) {
                    case 3:
                      _count += 3; // single triangle

                      break;

                    case 4:
                      _count += 6; // quad, subdivided into two triangles

                      break;

                    default:
                      _count += (vc - 2) * 3; // polylist with more than four vertices

                      break;
                  }
                }

                break;

              default:
                console.warn('THREE.ColladaLoader: Unknow primitive type:', primitive.type);
            }

            geometry.addGroup(start, _count, p);
            start += _count; // material

            if (primitive.material) {
              materialKeys.push(primitive.material);
            } // geometry data


            for (var name in inputs) {
              var input = inputs[name];

              switch (name) {
                case 'VERTEX':
                  for (var key in vertices) {
                    var id = vertices[key];

                    switch (key) {
                      case 'POSITION':
                        var prevLength = position.array.length;
                        buildGeometryData(primitive, sources[id], input.offset, position.array);
                        position.stride = sources[id].stride;

                        if (sources.skinWeights && sources.skinIndices) {
                          buildGeometryData(primitive, sources.skinIndices, input.offset, skinIndex.array);
                          buildGeometryData(primitive, sources.skinWeights, input.offset, skinWeight.array);
                        } // see #3803


                        if (primitive.hasUV === false && primitives.uvsNeedsFix === true) {
                          var _count2 = (position.array.length - prevLength) / position.stride;

                          for (var i = 0; i < _count2; i++) {
                            // fill missing uv coordinates
                            uv.array.push(0, 0);
                          }
                        }

                        break;

                      case 'NORMAL':
                        buildGeometryData(primitive, sources[id], input.offset, normal.array);
                        normal.stride = sources[id].stride;
                        break;

                      case 'COLOR':
                        buildGeometryData(primitive, sources[id], input.offset, color.array);
                        color.stride = sources[id].stride;
                        break;

                      case 'TEXCOORD':
                        buildGeometryData(primitive, sources[id], input.offset, uv.array);
                        uv.stride = sources[id].stride;
                        break;

                      case 'TEXCOORD1':
                        buildGeometryData(primitive, sources[id], input.offset, uv2.array);
                        uv.stride = sources[id].stride;
                        break;

                      default:
                        console.warn('THREE.ColladaLoader: Semantic "%s" not handled in geometry build process.', key);
                    }
                  }

                  break;

                case 'NORMAL':
                  buildGeometryData(primitive, sources[input.id], input.offset, normal.array);
                  normal.stride = sources[input.id].stride;
                  break;

                case 'COLOR':
                  buildGeometryData(primitive, sources[input.id], input.offset, color.array);
                  color.stride = sources[input.id].stride;
                  break;

                case 'TEXCOORD':
                  buildGeometryData(primitive, sources[input.id], input.offset, uv.array);
                  uv.stride = sources[input.id].stride;
                  break;

                case 'TEXCOORD1':
                  buildGeometryData(primitive, sources[input.id], input.offset, uv2.array);
                  uv2.stride = sources[input.id].stride;
                  break;
              }
            }
          } // build geometry


          if (position.array.length > 0) geometry.setAttribute('position', new _three.Float32BufferAttribute(position.array, position.stride));
          if (normal.array.length > 0) geometry.setAttribute('normal', new _three.Float32BufferAttribute(normal.array, normal.stride));
          if (color.array.length > 0) geometry.setAttribute('color', new _three.Float32BufferAttribute(color.array, color.stride));
          if (uv.array.length > 0) geometry.setAttribute('uv', new _three.Float32BufferAttribute(uv.array, uv.stride));
          if (uv2.array.length > 0) geometry.setAttribute('uv2', new _three.Float32BufferAttribute(uv2.array, uv2.stride));
          if (skinIndex.array.length > 0) geometry.setAttribute('skinIndex', new _three.Float32BufferAttribute(skinIndex.array, skinIndex.stride));
          if (skinWeight.array.length > 0) geometry.setAttribute('skinWeight', new _three.Float32BufferAttribute(skinWeight.array, skinWeight.stride));
          build.data = geometry;
          build.type = primitives[0].type;
          build.materialKeys = materialKeys;
          return build;
        }

        function buildGeometryData(primitive, source, offset, array) {
          var indices = primitive.p;
          var stride = primitive.stride;
          var vcount = primitive.vcount;

          function pushVector(i) {
            var index = indices[i + offset] * sourceStride;
            var length = index + sourceStride;

            for (; index < length; index++) {
              array.push(sourceArray[index]);
            }
          }

          var sourceArray = source.array;
          var sourceStride = source.stride;

          if (primitive.vcount !== undefined) {
            var index = 0;

            for (var i = 0, l = vcount.length; i < l; i++) {
              var _count3 = vcount[i];

              if (_count3 === 4) {
                var a = index + stride * 0;
                var b = index + stride * 1;
                var c = index + stride * 2;
                var d = index + stride * 3;
                pushVector(a);
                pushVector(b);
                pushVector(d);
                pushVector(b);
                pushVector(c);
                pushVector(d);
              } else if (_count3 === 3) {
                var _a = index + stride * 0;

                var _b = index + stride * 1;

                var _c = index + stride * 2;

                pushVector(_a);
                pushVector(_b);
                pushVector(_c);
              } else if (_count3 > 4) {
                for (var k = 1, kl = _count3 - 2; k <= kl; k++) {
                  var _a2 = index + stride * 0;

                  var _b2 = index + stride * k;

                  var _c2 = index + stride * (k + 1);

                  pushVector(_a2);
                  pushVector(_b2);
                  pushVector(_c2);
                }
              }

              index += stride * _count3;
            }
          } else {
            for (var _i = 0, _l = indices.length; _i < _l; _i += stride) {
              pushVector(_i);
            }
          }
        }

        function getGeometry(id) {
          return getBuild(library.geometries[id], buildGeometry);
        } // kinematics


        function parseKinematicsModel(xml) {
          var data = {
            name: xml.getAttribute('name') || '',
            joints: {},
            links: []
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'technique_common':
                parseKinematicsTechniqueCommon(child, data);
                break;
            }
          }

          library.kinematicsModels[xml.getAttribute('id')] = data;
        }

        function buildKinematicsModel(data) {
          if (data.build !== undefined) return data.build;
          return data;
        }

        function getKinematicsModel(id) {
          return getBuild(library.kinematicsModels[id], buildKinematicsModel);
        }

        function parseKinematicsTechniqueCommon(xml, data) {
          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'joint':
                data.joints[child.getAttribute('sid')] = parseKinematicsJoint(child);
                break;

              case 'link':
                data.links.push(parseKinematicsLink(child));
                break;
            }
          }
        }

        function parseKinematicsJoint(xml) {
          var data;

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'prismatic':
              case 'revolute':
                data = parseKinematicsJointParameter(child);
                break;
            }
          }

          return data;
        }

        function parseKinematicsJointParameter(xml) {
          var data = {
            sid: xml.getAttribute('sid'),
            name: xml.getAttribute('name') || '',
            axis: new _three.Vector3(),
            limits: {
              min: 0,
              max: 0
            },
            type: xml.nodeName,
            static: false,
            zeroPosition: 0,
            middlePosition: 0
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'axis':
                var array = parseFloats(child.textContent);
                data.axis.fromArray(array);
                break;

              case 'limits':
                var max = child.getElementsByTagName('max')[0];
                var min = child.getElementsByTagName('min')[0];
                data.limits.max = parseFloat(max.textContent);
                data.limits.min = parseFloat(min.textContent);
                break;
            }
          } // if min is equal to or greater than max, consider the joint static


          if (data.limits.min >= data.limits.max) {
            data.static = true;
          } // calculate middle position


          data.middlePosition = (data.limits.min + data.limits.max) / 2.0;
          return data;
        }

        function parseKinematicsLink(xml) {
          var data = {
            sid: xml.getAttribute('sid'),
            name: xml.getAttribute('name') || '',
            attachments: [],
            transforms: []
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'attachment_full':
                data.attachments.push(parseKinematicsAttachment(child));
                break;

              case 'matrix':
              case 'translate':
              case 'rotate':
                data.transforms.push(parseKinematicsTransform(child));
                break;
            }
          }

          return data;
        }

        function parseKinematicsAttachment(xml) {
          var data = {
            joint: xml.getAttribute('joint').split('/').pop(),
            transforms: [],
            links: []
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'link':
                data.links.push(parseKinematicsLink(child));
                break;

              case 'matrix':
              case 'translate':
              case 'rotate':
                data.transforms.push(parseKinematicsTransform(child));
                break;
            }
          }

          return data;
        }

        function parseKinematicsTransform(xml) {
          var data = {
            type: xml.nodeName
          };
          var array = parseFloats(xml.textContent);

          switch (data.type) {
            case 'matrix':
              data.obj = new _three.Matrix4();
              data.obj.fromArray(array).transpose();
              break;

            case 'translate':
              data.obj = new _three.Vector3();
              data.obj.fromArray(array);
              break;

            case 'rotate':
              data.obj = new _three.Vector3();
              data.obj.fromArray(array);
              data.angle = _three.MathUtils.degToRad(array[3]);
              break;
          }

          return data;
        } // physics


        function parsePhysicsModel(xml) {
          var data = {
            name: xml.getAttribute('name') || '',
            rigidBodies: {}
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'rigid_body':
                data.rigidBodies[child.getAttribute('name')] = {};
                parsePhysicsRigidBody(child, data.rigidBodies[child.getAttribute('name')]);
                break;
            }
          }

          library.physicsModels[xml.getAttribute('id')] = data;
        }

        function parsePhysicsRigidBody(xml, data) {
          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'technique_common':
                parsePhysicsTechniqueCommon(child, data);
                break;
            }
          }
        }

        function parsePhysicsTechniqueCommon(xml, data) {
          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'inertia':
                data.inertia = parseFloats(child.textContent);
                break;

              case 'mass':
                data.mass = parseFloats(child.textContent)[0];
                break;
            }
          }
        } // scene


        function parseKinematicsScene(xml) {
          var data = {
            bindJointAxis: []
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'bind_joint_axis':
                data.bindJointAxis.push(parseKinematicsBindJointAxis(child));
                break;
            }
          }

          library.kinematicsScenes[parseId(xml.getAttribute('url'))] = data;
        }

        function parseKinematicsBindJointAxis(xml) {
          var data = {
            target: xml.getAttribute('target').split('/').pop()
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            switch (child.nodeName) {
              case 'axis':
                var param = child.getElementsByTagName('param')[0];
                data.axis = param.textContent;
                var tmpJointIndex = data.axis.split('inst_').pop().split('axis')[0];
                data.jointIndex = tmpJointIndex.substr(0, tmpJointIndex.length - 1);
                break;
            }
          }

          return data;
        }

        function buildKinematicsScene(data) {
          if (data.build !== undefined) return data.build;
          return data;
        }

        function getKinematicsScene(id) {
          return getBuild(library.kinematicsScenes[id], buildKinematicsScene);
        }

        function setupKinematics() {
          var kinematicsModelId = Object.keys(library.kinematicsModels)[0];
          var kinematicsSceneId = Object.keys(library.kinematicsScenes)[0];
          var visualSceneId = Object.keys(library.visualScenes)[0];
          if (kinematicsModelId === undefined || kinematicsSceneId === undefined) return;
          var kinematicsModel = getKinematicsModel(kinematicsModelId);
          var kinematicsScene = getKinematicsScene(kinematicsSceneId);
          var visualScene = getVisualScene(visualSceneId);
          var bindJointAxis = kinematicsScene.bindJointAxis;
          var jointMap = {};

          for (var i = 0, l = bindJointAxis.length; i < l; i++) {
            var axis = bindJointAxis[i]; // the result of the following query is an element of type 'translate', 'rotate','scale' or 'matrix'

            var targetElement = collada.querySelector('[sid="' + axis.target + '"]');

            if (targetElement) {
              // get the parent of the transform element
              var parentVisualElement = targetElement.parentElement; // connect the joint of the kinematics model with the element in the visual scene

              connect(axis.jointIndex, parentVisualElement);
            }
          }

          function connect(jointIndex, visualElement) {
            var visualElementName = visualElement.getAttribute('name');
            var joint = kinematicsModel.joints[jointIndex];
            visualScene.traverse(function (object) {
              if (object.name === visualElementName) {
                jointMap[jointIndex] = {
                  object: object,
                  transforms: buildTransformList(visualElement),
                  joint: joint,
                  position: joint.zeroPosition
                };
              }
            });
          }

          var m0 = new _three.Matrix4();
          kinematics = {
            joints: kinematicsModel && kinematicsModel.joints,
            getJointValue: function getJointValue(jointIndex) {
              var jointData = jointMap[jointIndex];

              if (jointData) {
                return jointData.position;
              } else {
                console.warn('THREE.ColladaLoader: Joint ' + jointIndex + ' doesn\'t exist.');
              }
            },
            setJointValue: function setJointValue(jointIndex, value) {
              var jointData = jointMap[jointIndex];

              if (jointData) {
                var joint = jointData.joint;

                if (value > joint.limits.max || value < joint.limits.min) {
                  console.warn('THREE.ColladaLoader: Joint ' + jointIndex + ' value ' + value + ' outside of limits (min: ' + joint.limits.min + ', max: ' + joint.limits.max + ').');
                } else if (joint.static) {
                  console.warn('THREE.ColladaLoader: Joint ' + jointIndex + ' is static.');
                } else {
                  var object = jointData.object;
                  var _axis = joint.axis;
                  var transforms = jointData.transforms;
                  matrix.identity(); // each update, we have to apply all transforms in the correct order

                  for (var _i2 = 0; _i2 < transforms.length; _i2++) {
                    var transform = transforms[_i2]; // if there is a connection of the transform node with a joint, apply the joint value

                    if (transform.sid && transform.sid.indexOf(jointIndex) !== -1) {
                      switch (joint.type) {
                        case 'revolute':
                          matrix.multiply(m0.makeRotationAxis(_axis, _three.MathUtils.degToRad(value)));
                          break;

                        case 'prismatic':
                          matrix.multiply(m0.makeTranslation(_axis.x * value, _axis.y * value, _axis.z * value));
                          break;

                        default:
                          console.warn('THREE.ColladaLoader: Unknown joint type: ' + joint.type);
                          break;
                      }
                    } else {
                      switch (transform.type) {
                        case 'matrix':
                          matrix.multiply(transform.obj);
                          break;

                        case 'translate':
                          matrix.multiply(m0.makeTranslation(transform.obj.x, transform.obj.y, transform.obj.z));
                          break;

                        case 'scale':
                          matrix.scale(transform.obj);
                          break;

                        case 'rotate':
                          matrix.multiply(m0.makeRotationAxis(transform.obj, transform.angle));
                          break;
                      }
                    }
                  }

                  object.matrix.copy(matrix);
                  object.matrix.decompose(object.position, object.quaternion, object.scale);
                  jointMap[jointIndex].position = value;
                }
              } else {
                console.log('THREE.ColladaLoader: ' + jointIndex + ' does not exist.');
              }
            }
          };
        }

        function buildTransformList(node) {
          var transforms = [];
          var xml = collada.querySelector('[id="' + node.id + '"]');

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;

            var array = void 0,
                _vector = void 0;

            switch (child.nodeName) {
              case 'matrix':
                array = parseFloats(child.textContent);

                var _matrix = new _three.Matrix4().fromArray(array).transpose();

                transforms.push({
                  sid: child.getAttribute('sid'),
                  type: child.nodeName,
                  obj: _matrix
                });
                break;

              case 'translate':
              case 'scale':
                array = parseFloats(child.textContent);
                _vector = new _three.Vector3().fromArray(array);
                transforms.push({
                  sid: child.getAttribute('sid'),
                  type: child.nodeName,
                  obj: _vector
                });
                break;

              case 'rotate':
                array = parseFloats(child.textContent);
                _vector = new _three.Vector3().fromArray(array);

                var angle = _three.MathUtils.degToRad(array[3]);

                transforms.push({
                  sid: child.getAttribute('sid'),
                  type: child.nodeName,
                  obj: _vector,
                  angle: angle
                });
                break;
            }
          }

          return transforms;
        } // nodes


        function prepareNodes(xml) {
          var elements = xml.getElementsByTagName('node'); // ensure all node elements have id attributes

          for (var i = 0; i < elements.length; i++) {
            var element = elements[i];

            if (element.hasAttribute('id') === false) {
              element.setAttribute('id', generateId());
            }
          }
        }

        var matrix = new _three.Matrix4();
        var vector = new _three.Vector3();

        function parseNode(xml) {
          var data = {
            name: xml.getAttribute('name') || '',
            type: xml.getAttribute('type'),
            id: xml.getAttribute('id'),
            sid: xml.getAttribute('sid'),
            matrix: new _three.Matrix4(),
            nodes: [],
            instanceCameras: [],
            instanceControllers: [],
            instanceLights: [],
            instanceGeometries: [],
            instanceNodes: [],
            transforms: {}
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];
            if (child.nodeType !== 1) continue;
            var array = void 0;

            switch (child.nodeName) {
              case 'node':
                data.nodes.push(child.getAttribute('id'));
                parseNode(child);
                break;

              case 'instance_camera':
                data.instanceCameras.push(parseId(child.getAttribute('url')));
                break;

              case 'instance_controller':
                data.instanceControllers.push(parseNodeInstance(child));
                break;

              case 'instance_light':
                data.instanceLights.push(parseId(child.getAttribute('url')));
                break;

              case 'instance_geometry':
                data.instanceGeometries.push(parseNodeInstance(child));
                break;

              case 'instance_node':
                data.instanceNodes.push(parseId(child.getAttribute('url')));
                break;

              case 'matrix':
                array = parseFloats(child.textContent);
                data.matrix.multiply(matrix.fromArray(array).transpose());
                data.transforms[child.getAttribute('sid')] = child.nodeName;
                break;

              case 'translate':
                array = parseFloats(child.textContent);
                vector.fromArray(array);
                data.matrix.multiply(matrix.makeTranslation(vector.x, vector.y, vector.z));
                data.transforms[child.getAttribute('sid')] = child.nodeName;
                break;

              case 'rotate':
                array = parseFloats(child.textContent);

                var angle = _three.MathUtils.degToRad(array[3]);

                data.matrix.multiply(matrix.makeRotationAxis(vector.fromArray(array), angle));
                data.transforms[child.getAttribute('sid')] = child.nodeName;
                break;

              case 'scale':
                array = parseFloats(child.textContent);
                data.matrix.scale(vector.fromArray(array));
                data.transforms[child.getAttribute('sid')] = child.nodeName;
                break;

              case 'extra':
                break;

              default:
                console.log(child);
            }
          }

          if (hasNode(data.id)) {
            console.warn('THREE.ColladaLoader: There is already a node with ID %s. Exclude current node from further processing.', data.id);
          } else {
            library.nodes[data.id] = data;
          }

          return data;
        }

        function parseNodeInstance(xml) {
          var data = {
            id: parseId(xml.getAttribute('url')),
            materials: {},
            skeletons: []
          };

          for (var i = 0; i < xml.childNodes.length; i++) {
            var child = xml.childNodes[i];

            switch (child.nodeName) {
              case 'bind_material':
                var instances = child.getElementsByTagName('instance_material');

                for (var j = 0; j < instances.length; j++) {
                  var instance = instances[j];
                  var symbol = instance.getAttribute('symbol');
                  var target = instance.getAttribute('target');
                  data.materials[symbol] = parseId(target);
                }

                break;

              case 'skeleton':
                data.skeletons.push(parseId(child.textContent));
                break;

              default:
                break;
            }
          }

          return data;
        }

        function buildSkeleton(skeletons, joints) {
          var boneData = [];
          var sortedBoneData = [];
          var i, j, data; // a skeleton can have multiple root bones. collada expresses this
          // situtation with multiple "skeleton" tags per controller instance

          for (i = 0; i < skeletons.length; i++) {
            var skeleton = skeletons[i];
            var root = void 0;

            if (hasNode(skeleton)) {
              root = getNode(skeleton);
              buildBoneHierarchy(root, joints, boneData);
            } else if (hasVisualScene(skeleton)) {
              // handle case where the skeleton refers to the visual scene (#13335)
              var visualScene = library.visualScenes[skeleton];
              var children = visualScene.children;

              for (var _j = 0; _j < children.length; _j++) {
                var child = children[_j];

                if (child.type === 'JOINT') {
                  var _root = getNode(child.id);

                  buildBoneHierarchy(_root, joints, boneData);
                }
              }
            } else {
              console.error('THREE.ColladaLoader: Unable to find root bone of skeleton with ID:', skeleton);
            }
          } // sort bone data (the order is defined in the corresponding controller)


          for (i = 0; i < joints.length; i++) {
            for (j = 0; j < boneData.length; j++) {
              data = boneData[j];

              if (data.bone.name === joints[i].name) {
                sortedBoneData[i] = data;
                data.processed = true;
                break;
              }
            }
          } // add unprocessed bone data at the end of the list


          for (i = 0; i < boneData.length; i++) {
            data = boneData[i];

            if (data.processed === false) {
              sortedBoneData.push(data);
              data.processed = true;
            }
          } // setup arrays for skeleton creation


          var bones = [];
          var boneInverses = [];

          for (i = 0; i < sortedBoneData.length; i++) {
            data = sortedBoneData[i];
            bones.push(data.bone);
            boneInverses.push(data.boneInverse);
          }

          return new _three.Skeleton(bones, boneInverses);
        }

        function buildBoneHierarchy(root, joints, boneData) {
          // setup bone data from visual scene
          root.traverse(function (object) {
            if (object.isBone === true) {
              var boneInverse; // retrieve the boneInverse from the controller data

              for (var i = 0; i < joints.length; i++) {
                var joint = joints[i];

                if (joint.name === object.name) {
                  boneInverse = joint.boneInverse;
                  break;
                }
              }

              if (boneInverse === undefined) {
                // Unfortunately, there can be joints in the visual scene that are not part of the
                // corresponding controller. In this case, we have to create a dummy boneInverse matrix
                // for the respective bone. This bone won't affect any vertices, because there are no skin indices
                // and weights defined for it. But we still have to add the bone to the sorted bone list in order to
                // ensure a correct animation of the model.
                boneInverse = new _three.Matrix4();
              }

              boneData.push({
                bone: object,
                boneInverse: boneInverse,
                processed: false
              });
            }
          });
        }

        function buildNode(data) {
          var objects = [];
          var matrix = data.matrix;
          var nodes = data.nodes;
          var type = data.type;
          var instanceCameras = data.instanceCameras;
          var instanceControllers = data.instanceControllers;
          var instanceLights = data.instanceLights;
          var instanceGeometries = data.instanceGeometries;
          var instanceNodes = data.instanceNodes; // nodes

          for (var i = 0, l = nodes.length; i < l; i++) {
            objects.push(getNode(nodes[i]));
          } // instance cameras


          for (var _i3 = 0, _l2 = instanceCameras.length; _i3 < _l2; _i3++) {
            var instanceCamera = getCamera(instanceCameras[_i3]);

            if (instanceCamera !== null) {
              objects.push(instanceCamera.clone());
            }
          } // instance controllers


          for (var _i4 = 0, _l3 = instanceControllers.length; _i4 < _l3; _i4++) {
            var instance = instanceControllers[_i4];
            var controller = getController(instance.id);
            var geometries = getGeometry(controller.id);
            var newObjects = buildObjects(geometries, instance.materials);
            var skeletons = instance.skeletons;
            var joints = controller.skin.joints;
            var skeleton = buildSkeleton(skeletons, joints);

            for (var j = 0, jl = newObjects.length; j < jl; j++) {
              var _object = newObjects[j];

              if (_object.isSkinnedMesh) {
                _object.bind(skeleton, controller.skin.bindMatrix);

                _object.normalizeSkinWeights();
              }

              objects.push(_object);
            }
          } // instance lights


          for (var _i5 = 0, _l4 = instanceLights.length; _i5 < _l4; _i5++) {
            var instanceLight = getLight(instanceLights[_i5]);

            if (instanceLight !== null) {
              objects.push(instanceLight.clone());
            }
          } // instance geometries


          for (var _i6 = 0, _l5 = instanceGeometries.length; _i6 < _l5; _i6++) {
            var _instance = instanceGeometries[_i6]; // a single geometry instance in collada can lead to multiple object3Ds.
            // this is the case when primitives are combined like triangles and lines

            var _geometries = getGeometry(_instance.id);

            var _newObjects = buildObjects(_geometries, _instance.materials);

            for (var _j2 = 0, _jl = _newObjects.length; _j2 < _jl; _j2++) {
              objects.push(_newObjects[_j2]);
            }
          } // instance nodes


          for (var _i7 = 0, _l6 = instanceNodes.length; _i7 < _l6; _i7++) {
            objects.push(getNode(instanceNodes[_i7]).clone());
          }

          var object;

          if (nodes.length === 0 && objects.length === 1) {
            object = objects[0];
          } else {
            object = type === 'JOINT' ? new _three.Bone() : new _three.Group();

            for (var _i8 = 0; _i8 < objects.length; _i8++) {
              object.add(objects[_i8]);
            }
          }

          object.name = type === 'JOINT' ? data.sid : data.name;
          object.matrix.copy(matrix);
          object.matrix.decompose(object.position, object.quaternion, object.scale);
          return object;
        }

        var fallbackMaterial = new _three.MeshBasicMaterial({
          color: 0xff00ff
        });

        function resolveMaterialBinding(keys, instanceMaterials) {
          var materials = [];

          for (var i = 0, l = keys.length; i < l; i++) {
            var id = instanceMaterials[keys[i]];

            if (id === undefined) {
              console.warn('THREE.ColladaLoader: Material with key %s not found. Apply fallback material.', keys[i]);
              materials.push(fallbackMaterial);
            } else {
              materials.push(getMaterial(id));
            }
          }

          return materials;
        }

        function buildObjects(geometries, instanceMaterials) {
          var objects = [];

          for (var type in geometries) {
            var geometry = geometries[type];
            var materials = resolveMaterialBinding(geometry.materialKeys, instanceMaterials); // handle case if no materials are defined

            if (materials.length === 0) {
              if (type === 'lines' || type === 'linestrips') {
                materials.push(new _three.LineBasicMaterial());
              } else {
                materials.push(new _three.MeshPhongMaterial());
              }
            } // regard skinning


            var skinning = geometry.data.attributes.skinIndex !== undefined; // choose between a single or multi materials (material array)

            var material = materials.length === 1 ? materials[0] : materials; // now create a specific 3D object

            var object = void 0;

            switch (type) {
              case 'lines':
                object = new _three.LineSegments(geometry.data, material);
                break;

              case 'linestrips':
                object = new _three.Line(geometry.data, material);
                break;

              case 'triangles':
              case 'polylist':
                if (skinning) {
                  object = new _three.SkinnedMesh(geometry.data, material);
                } else {
                  object = new _three.Mesh(geometry.data, material);
                }

                break;
            }

            objects.push(object);
          }

          return objects;
        }

        function hasNode(id) {
          return library.nodes[id] !== undefined;
        }

        function getNode(id) {
          return getBuild(library.nodes[id], buildNode);
        } // visual scenes


        function parseVisualScene(xml) {
          var data = {
            name: xml.getAttribute('name'),
            children: []
          };
          prepareNodes(xml);
          var elements = getElementsByTagName(xml, 'node');

          for (var i = 0; i < elements.length; i++) {
            data.children.push(parseNode(elements[i]));
          }

          library.visualScenes[xml.getAttribute('id')] = data;
        }

        function buildVisualScene(data) {
          var group = new _three.Group();
          group.name = data.name;
          var children = data.children;

          for (var i = 0; i < children.length; i++) {
            var child = children[i];
            group.add(getNode(child.id));
          }

          return group;
        }

        function hasVisualScene(id) {
          return library.visualScenes[id] !== undefined;
        }

        function getVisualScene(id) {
          return getBuild(library.visualScenes[id], buildVisualScene);
        } // scenes


        function parseScene(xml) {
          var instance = getElementsByTagName(xml, 'instance_visual_scene')[0];
          return getVisualScene(parseId(instance.getAttribute('url')));
        }

        function setupAnimations() {
          var clips = library.clips;

          if (isEmpty(clips) === true) {
            if (isEmpty(library.animations) === false) {
              // if there are animations but no clips, we create a default clip for playback
              var tracks = [];

              for (var id in library.animations) {
                var animationTracks = getAnimation(id);

                for (var i = 0, l = animationTracks.length; i < l; i++) {
                  tracks.push(animationTracks[i]);
                }
              }

              animations.push(new _three.AnimationClip('default', -1, tracks));
            }
          } else {
            for (var _id in clips) {
              animations.push(getAnimationClip(_id));
            }
          }
        } // convert the parser error element into text with each child elements text
        // separated by new lines.


        function parserErrorToText(parserError) {
          var result = '';
          var stack = [parserError];

          while (stack.length) {
            var node = stack.shift();

            if (node.nodeType === Node.TEXT_NODE) {
              result += node.textContent;
            } else {
              result += '\n';
              stack.push.apply(stack, node.childNodes);
            }
          }

          return result.trim();
        }

        if (text.length === 0) {
          return {
            scene: new _three.Scene()
          };
        }

        var xml = new DOMParser().parseFromString(text, 'application/xml');
        var collada = getElementsByTagName(xml, 'COLLADA')[0];
        var parserError = xml.getElementsByTagName('parsererror')[0];

        if (parserError !== undefined) {
          // Chrome will return parser error with a div in it
          var errorElement = getElementsByTagName(parserError, 'div')[0];
          var errorText;

          if (errorElement) {
            errorText = errorElement.textContent;
          } else {
            errorText = parserErrorToText(parserError);
          }

          console.error('THREE.ColladaLoader: Failed to parse collada file.\n', errorText);
          return null;
        } // metadata


        var version = collada.getAttribute('version');
        console.log('THREE.ColladaLoader: File version', version);
        var asset = parseAsset(getElementsByTagName(collada, 'asset')[0]);
        var textureLoader = new _three.TextureLoader(this.manager);
        textureLoader.setPath(this.resourcePath || path).setCrossOrigin(this.crossOrigin);
        var tgaLoader;

        if (_TGALoader.TGALoader) {
          tgaLoader = new _TGALoader.TGALoader(this.manager);
          tgaLoader.setPath(this.resourcePath || path);
        } //


        var animations = [];
        var kinematics = {};
        var count = 0; //

        var library = {
          animations: {},
          clips: {},
          controllers: {},
          images: {},
          effects: {},
          materials: {},
          cameras: {},
          lights: {},
          geometries: {},
          nodes: {},
          visualScenes: {},
          kinematicsModels: {},
          physicsModels: {},
          kinematicsScenes: {}
        };
        parseLibrary(collada, 'library_animations', 'animation', parseAnimation);
        parseLibrary(collada, 'library_animation_clips', 'animation_clip', parseAnimationClip);
        parseLibrary(collada, 'library_controllers', 'controller', parseController);
        parseLibrary(collada, 'library_images', 'image', parseImage);
        parseLibrary(collada, 'library_effects', 'effect', parseEffect);
        parseLibrary(collada, 'library_materials', 'material', parseMaterial);
        parseLibrary(collada, 'library_cameras', 'camera', parseCamera);
        parseLibrary(collada, 'library_lights', 'light', parseLight);
        parseLibrary(collada, 'library_geometries', 'geometry', parseGeometry);
        parseLibrary(collada, 'library_nodes', 'node', parseNode);
        parseLibrary(collada, 'library_visual_scenes', 'visual_scene', parseVisualScene);
        parseLibrary(collada, 'library_kinematics_models', 'kinematics_model', parseKinematicsModel);
        parseLibrary(collada, 'library_physics_models', 'physics_model', parsePhysicsModel);
        parseLibrary(collada, 'scene', 'instance_kinematics_scene', parseKinematicsScene);
        buildLibrary(library.animations, buildAnimation);
        buildLibrary(library.clips, buildAnimationClip);
        buildLibrary(library.controllers, buildController);
        buildLibrary(library.images, buildImage);
        buildLibrary(library.effects, buildEffect);
        buildLibrary(library.materials, buildMaterial);
        buildLibrary(library.cameras, buildCamera);
        buildLibrary(library.lights, buildLight);
        buildLibrary(library.geometries, buildGeometry);
        buildLibrary(library.visualScenes, buildVisualScene);
        setupAnimations();
        setupKinematics();
        var scene = parseScene(getElementsByTagName(collada, 'scene')[0]);
        scene.animations = animations;

        if (asset.upAxis === 'Z_UP') {
          scene.quaternion.setFromEuler(new _three.Euler(-Math.PI / 2, 0, 0));
        }

        scene.scale.multiplyScalar(asset.unit);
        return {
          get animations() {
            console.warn('THREE.ColladaLoader: Please access animations over scene.animations now.');
            return animations;
          },

          kinematics: kinematics,
          library: library,
          scene: scene
        };
      }
    }]);

    return ColladaLoader;
  }(_three.Loader);

  _exports.ColladaLoader = ColladaLoader;
});