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(n = Math.acos(i), a = Math.sin(n), o = Math.sin((1 - r) * n) / a, f = Math.sin(r * n) / a) : (o = 1 - r, f = r), e[0] = o * u + f * d, e[1] = o * h + f * m, e[2] = o * c + f * g, e[3] = o * l + f * p, e;\n  }\n  s(), function () {\n    var t,\n    s = (t = new e(4), e != Float32Array && (t[0] = 0, t[1] = 0, t[2] = 0, t[3] = 0), t);\n  }();\n  var l,\n  d = function d(e, t) {\n    return e[0] = t[0], e[1] = t[1], e[2] = t[2], e[3] = t[3], e;\n  };\n  s(), r(1, 0, 0), r(0, 1, 0), h(), h(), l = new e(9), e != Float32Array && (l[1] = 0, l[2] = 0, l[3] = 0, l[5] = 0, l[6] = 0, l[7] = 0), l[0] = 1, l[4] = 1, l[8] = 1;\n  var m = 0;\n  function g(e) {\n    return null == e;\n  }\n  function p(e) {\n    return !g(e);\n  }\n  function b(e) {\n    return !g(e) && (\"string\" == typeof e || null !== e.constructor && e.constructor === String);\n  }\n  function _(e) {\n    for (var _t = 1; _t < arguments.length; _t++) {\n      var _s = arguments[_t];\n      for (var _t2 in _s) e[_t2] = _s[_t2];\n    }\n    return e;\n  }\n  function y(e) {\n    switch (e) {\n      case 5120:\n        return Int8Array;\n      case 5121:\n        return Uint8Array;\n      case 5122:\n        return Int16Array;\n      case 5123:\n        return Uint16Array;\n      case 5124:\n        return Int32Array;\n      case 5125:\n        return Uint32Array;\n      case 5126:\n        return Float32Array;}\n\n    throw new Error(\"unsupported bufferView's component type: \" + e);\n  }\n  function x(e) {\n    return 0 === e.indexOf(\"data:\") && e.indexOf(\"base64,\") > 0;\n  }\n  function w(e) {\n    var t = function (e) {\n      return \"undefined\" != typeof self ? 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arguments[1] : {};\n      var s = arguments.length > 2 ? arguments[2] : undefined;\n      t || (t = {});\n      var r = new AbortController(),\n      n = r.signal,\n      i = _({}, t);\n      i.signal = n, i.method || (i.method = \"GET\"), i.referrerPolicy = i.referrerPolicy || \"origin\", \"undefined\" == typeof window || i.referrer || (i.referrer = window.location.href), s && (e = s(e));\n      var a = fetch(e, i).then(function (e) {\n        var s = _this._parseResponse(e, t.responseType);\n        return s.message ? s : s.then(function (s) {\n          return \"arraybuffer\" === t.responseType ? {\n            data: s,\n            cacheControl: e.headers.get(\"Cache-Control\"),\n            expires: e.headers.get(\"Expires\"),\n            contentType: e.headers.get(\"Content-Type\") } :\n          s;\n        }).catch(function (e) {\n          if (!e.code || e.code !== DOMException.ABORT_ERR) throw e;\n        });\n      }).catch(function (e) {\n        if (!e.code || e.code !== DOMException.ABORT_ERR) throw e;\n      });\n      return a.xhr = r, a;\n    },\n    _parseResponse: function _parseResponse(e, t) {\n      return 200 !== e.status ? {\n        status: e.status,\n        statusText: e.statusText,\n        message: \"incorrect http request with status code(\".concat(e.status, \"): \").concat(e.statusText) } :\n      \"arraybuffer\" === t ? e.arrayBuffer() : \"json\" === t ? e.json() : e.text();\n    },\n    getArrayBuffer: function getArrayBuffer(e) {\n      var t = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      var s = arguments.length > 2 ? arguments[2] : undefined;\n      return t || (t = {}), t.responseType = \"arraybuffer\", v.get(e, t, s);\n    },\n    getJSON: function getJSON(e) {\n      var t = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      var s = arguments.length > 2 ? arguments[2] : undefined;\n      return t && t.jsonp ? v.jsonp(e) : ((t = t || {}).responseType = \"json\", v.get(e, t, s));\n    } };\n\n  v.jsonp = function (e) {\n    var t = \"_maptalks_jsonp_\" + m++;\n    e.match(/\\?/) ? e += \"&callback=\" + t : e += \"?callback=\" + t;\n    var s = document.createElement(\"script\");\n    return s.type = \"text/javascript\", s.src = e, new Promise(function (e) {\n      window[t] = function (r) {\n        document.getElementsByTagName(\"head\")[0].removeChild(s), s = null, delete window[t], e(r);\n      }, document.getElementsByTagName(\"head\")[0].appendChild(s);\n    });\n  };\n  var P = function () {\n    function P(e, t, s, r, n) {\n      _classCallCheck(this, P);\n      this._requestImage = e, this.decoders = t, this._supportedFormats = s, this.images = {}, this._imgRequests = {}, this._fetchOptions = r || {}, this._urlModifier = n;\n    }\n    return _createClass(P, [{\n      key: \"requestImageFromBufferURI\",\n      value: function requestImageFromBufferURI(e, t, s) {\n        var _this2 = this;\n        if (this.buffers[e.id]) {\n          var _r = this.buffers[e.id],\n          _n2 = this._createDataView(t, _r);\n          return this.getImageByBuffer(_n2, s);\n        }\n        if (this._imgRequests[e.id]) return this._imgRequests[e.id].then(function () {\n          var r = _this2.buffers[e.id],\n          n = _this2._createDataView(t, r);\n          return _this2.getImageByBuffer(n, s);\n        });\n        if (x(e.uri)) {\n          var _r2 = this.buffers[e.id] = w(e.uri),\n          _n3 = this._createDataView(t, _r2);\n          return this.getImageByBuffer(_n3, s);\n        }\n        var r;\n        var n = e.uri.indexOf(\"blob:\") >= 0;\n        r = e.uri.indexOf(\"://\") > 0 || n ? e.uri : this.rootPath + \"/\" + e.uri;\n        return this._imgRequests[e.id] = v.getArrayBuffer(r, this._fetchOptions, this._urlModifier).then(function (r) {\n          var n = _this2.buffers[e.id] = r.data,\n          i = _this2._createDataView(t, n);\n          return _this2.getImageByBuffer(i, s);\n        });\n      } },\n    {\n      key: \"getImageByBuffer\",\n      value: function getImageByBuffer(e, t) {\n        if (this.images[t.id]) return Promise.resolve(this.images[t.id]);\n        var s = this.decoders;\n        if (s[t.mimeType]) return s[t.mimeType](e, {\n          supportedFormats: this._supportedFormats });\n\n        if (\"image/crn\" === t.mimeType || \"image/ktx2\" === t.mimeType || \"image/cttf\" === t.mimeType) throw new Error(\"missing transcoder for \" + t.mimeType, \"\");\n        return this._getImageInfo(t.id, e);\n      } },\n    {\n      key: \"requestExternalImage\",\n      value: function requestExternalImage(e) {\n        var _this3 = this;\n        if (this.images[e.id]) return Promise.resolve(this.images[e.id]);\n        var t = 0 === e.uri.indexOf(\"data:image/\") ? e.uri : this.rootPath + \"/\" + e.uri;\n        if (this._imgRequests[e.id]) return this._imgRequests[e.id].then(function () {\n          return _this3.images[e.id];\n        });\n        return this._imgRequests[e.id] = this._getImageInfo(e.id, t);\n      } },\n    {\n      key: \"_getImageInfo\",\n      value: function _getImageInfo(e, t) {\n        var _this4 = this;\n        return new Promise(function (s, r) {\n          var n = t;\n          _this4._urlModifier && (n = _this4._urlModifier(t)), _this4._requestImage(n, _this4._fetchOptions, function (n, i) {\n            n ? r(n) : (URL.revokeObjectURL(t), _this4.images[e] = i, s(_this4.images[e]));\n          });\n        });\n      } }]);\n\n  }();\n  var M = [\"SCALAR\", 1, \"VEC2\", 2, \"VEC3\", 3, \"VEC4\", 4, \"MAT2\", 4, \"MAT3\", 9, \"MAT4\", 16],\n  S = [];\n  var V = function () {\n    function V(e, t, s, r, n) {\n      _classCallCheck(this, V);\n      this.rootPath = e, this.gltf = t, this._enableInterleave = !1, this.glbBuffer = s, this.buffers = {}, this.requests = {}, this.accessors = {}, this._compareAccessor(), this._fetchOptions = r, this._urlModifier = n;\n    }\n    return _createClass(V, [{\n      key: \"_requestData\",\n      value: function _requestData(e, t) {\n        var _this5 = this;\n        var s = this.gltf,\n        r = s.accessors[t];\n        if (void 0 === r.bufferView) return this.accessors[r.id] = this._toBufferData(e, t, null, 0), Promise.resolve(this.accessors[r.id]);\n        if (r && this.accessors[r.id]) return Promise.resolve(this.accessors[r.id]);\n        var n = s.bufferViews[r.bufferView];\n        return this._requestBufferOfBufferView(n).then(function (s) {\n          var n = s.buffer,\n          i = s.byteOffset;\n          return _this5.accessors[r.id] = _this5._toBufferData(e, t, n, i);\n        });\n      } },\n    {\n      key: \"_requestBufferOfBufferView\",\n      value: function _requestBufferOfBufferView(e) {\n        var _this6 = this;\n        var t = this.gltf.buffers[e.buffer];\n        if (this.buffers[t.id]) {\n          var _e2 = this.buffers[t.id];\n          return Promise.resolve({\n            buffer: _e2,\n            byteOffset: 0 });\n\n        }\n        if (this.requests[t.id]) return this.requests[t.id].then(function () {\n          var e = _this6.buffers[t.id];\n          return Promise.resolve({\n            buffer: e,\n            byteOffset: 0 });\n\n        });\n        if (\"binary_glTF\" !== e.buffer && \"KHR_binary_glTF\" !== e.buffer && t.uri) {\n          if (x(t.uri)) {\n            var _e3 = this.buffers[t.id] = w(t.uri);\n            return Promise.resolve({\n              buffer: _e3,\n              byteOffset: 0 });\n\n          }\n          var _e4;\n          var _s3 = t.uri.indexOf(\"blob:\") >= 0;\n          _e4 = t.uri.indexOf(\"://\") > 0 || _s3 ? t.uri : this.rootPath + \"/\" + t.uri;\n          return this.requests[t.id] = v.getArrayBuffer(_e4, this._fetchOptions, !_s3 && this._urlModifier).then(function (r) {\n            _s3 && URL.revokeObjectURL(_e4);\n            return {\n              buffer: _this6.buffers[t.id] = r.data,\n              byteOffset: 0 };\n\n          });\n        }\n        return Promise.resolve({\n          buffer: this.glbBuffer.buffer,\n          byteOffset: this.glbBuffer.byteOffset });\n\n      } },\n    {\n      key: \"_toBufferData\",\n      value: function _toBufferData(e, t, s) {\n        var r = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;\n        var n = this.gltf,\n        i = n.accessors[t],\n        a = void 0 !== i.bufferView ? n.bufferViews[i.bufferView] : {},\n        o = (a.byteOffset || 0) + r,\n        f = this._getTypeItemSize(i.type),\n        h = y(i.componentType),\n        c = a.byteStride || 0;\n        var l = {\n          array: undefined,\n          name: e,\n          accessorName: t,\n          byteLength: i.count * f * h.BYTES_PER_ELEMENT,\n          componentType: i.componentType,\n          count: i.count,\n          type: i.type,\n          itemSize: f,\n          max: i.max,\n          min: i.min,\n          extensions: i.extensions };\n\n        if (i.min && (l.min = i.min), i.max && (l.max = i.max), s) {\n          if (this._enableInterleave) l.byteStride = c, l.byteOffset = o + (i.byteOffset || 0), !c || c === f * h.BYTES_PER_ELEMENT || \"indices\" === e || \"input\" === e || \"output\" === e || e.indexOf(\"morph\") >= 0 ? (l.array = this._typedArray(s, i.count, f, o + (i.byteOffset || 0), h), l.array.buffer.byteLength === l.byteLength && (l.byteOffset = 0)) : l.array = new Uint8Array(s, o, a.byteLength);else if (i.interleaved) {\n            l.byteStride = 0, l.byteOffset = 0;\n            var _e5 = new h(i.count * f);\n            if (l.array = q(_e5, s, i.count, f, c, o + (i.byteOffset || 0), i.componentType), l.extensions && l.extensions.WEB3D_quantized_attributes && f > 2) {\n              var _e6 = new Float32Array(l.array.length),\n              _t4 = l.extensions.WEB3D_quantized_attributes.decodeMatrix;\n              for (var _s4 = 0; _s4 < l.array.length; _s4 += f) {\n                S[0] = l.array[_s4], S[1] = l.array[_s4 + 1], S[2] = l.array[_s4 + 2], S[3] = 1;\n                var _r3 = u(S, S, _t4);\n                _e6[_s4] = _r3[0], _e6[_s4 + 1] = _r3[1], _e6[_s4 + 2] = _r3[2];\n              }\n              l.componentType = 5126, l.array = _e6;\n            }\n          } else l.byteStride = 0, l.array = this._typedArray(s, i.count, f, o + (i.byteOffset || 0), h), l.byteOffset = l.array.byteOffset;\n        } else {\n          l.array = new h(i.count);\n          var _e7 = l.min || l.max;\n          _e7 && (l.array[0] = _e7[0], l.array[1] = _e7[1], l.array[2] = _e7[2]);\n        }\n        return l;\n      } },\n    {\n      key: \"_compareAccessor\",\n      value: function _compareAccessor() {\n        var e = this.gltf.accessors;\n        if (Array.isArray(e)) for (var _t5 = 0; _t5 < e.length; _t5++) for (var _s5 = 0; _s5 < e.length; _s5++) _t5 !== _s5 && e[_t5].bufferView === e[_s5].bufferView && (e[_t5].interleaved = e[_s5].interleaved = !0);else for (var _t6 in e) for (var _s6 in e) _t6 !== _s6 && e[_t6].bufferView === e[_s6].bufferView && (e[_t6].interleaved = e[_s6].interleaved = !0);\n      } },\n    {\n      key: \"_typedArray\",\n      value: function _typedArray(e, t, s, r, n) {\n        return r % n.BYTES_PER_ELEMENT != 0 && (e = e.slice(r, r + t * s * n.BYTES_PER_ELEMENT), r = 0), new n(e, r, s * t);\n      } },\n    {\n      key: \"_getTypeItemSize\",\n      value: function _getTypeItemSize(e) {\n        var t = M.indexOf(e);\n        return M[t + 1];\n      } },\n    {\n      key: \"requestKHRTechniquesWebgl\",\n      value: function requestKHRTechniquesWebgl(e) {\n        var _this7 = this;\n        var t = e.shaders,\n        s = t.map(function (e) {\n          if (void 0 !== e.bufferView) {\n            var _t7 = _this7.gltf.bufferViews[e.bufferView],\n            _s7 = _t7.byteLength;\n            return _this7._requestBufferOfBufferView(_t7).then(function (r) {\n              var n = r.buffer,\n              i = r.byteOffset,\n              a = N(n, i + (_t7.byteOffset || 0), _s7);\n              return e.content = a, e;\n            });\n          }\n          if (e.uri) {\n            if (x(e.uri)) {\n              var _t8 = w(e.uri),\n              _s8 = N(_t8, 0, _t8.byteLength);\n              return e.content = _s8, Promise.resolve(e);\n            }\n            {\n              var _t9 = _this7.rootPath + \"/\" + e.uri;\n              return v.get(_t9, _this7._fetchOptions, _this7._urlModifier).then(function (t) {\n                return e.content = t, e;\n              });\n            }\n          }\n          return Promise.resolve(e);\n        });\n        return Promise.all(s).then(function () {\n          return e;\n        });\n      } }]);\n\n  }();\n  var D = function (_P) {\n    function D(e, t, s, r, n, i, a, o) {\n      var _this8;\n      _classCallCheck(this, D);\n      _this8 = _callSuper(this, D, [r, n, i, a, o]), _this8.rootPath = e, _this8.gltf = t, _this8.requests = {}, _this8.buffers = {}, _this8.glbBuffer = s, _this8.accessor = new V(e, t, s, a, o);\n      return _this8;\n    }\n    _inherits(D, _P);\n    return _createClass(D, [{\n      key: \"iterate\",\n      value: function iterate(e, t) {\n        var s = this.gltf[t];\n        if (!s) return;\n        var r = 0;\n        for (var _t10 in s) e(_t10, s[_t10], r++);\n      } },\n    {\n      key: \"createNode\",\n      value: function createNode(e) {\n        var s = {};\n        if (p(e.name) && (s.name = e.name), p(e.children) && (s.children = e.children), p(e.jointName) && (s.jointName = e.jointName), p(e.matrix) && (s.matrix = e.matrix), p(e.rotation) && (s.rotation = e.rotation), p(e.scale) && (s.scale = e.scale), p(e.translation) && (s.translation = e.translation), p(e.extras) && (s.extras = e.extras), p(e.meshes) && (s.mesh = e.meshes[0]), s.translation || s.rotation || s.scale) {\n          var _e8 = function (e, s) {\n            if (s.matrix) return s.matrix;\n            if (s.translation || s.scale || s.rotation) {\n              var _r4 = function (e, t) {\n                return e[0] = 1, e[1] = 0, e[2] = 0, e[3] = 0, e[4] = 0, e[5] = 1, e[6] = 0, e[7] = 0, e[8] = 0, e[9] = 0, e[10] = 1, e[11] = 0, e[12] = t[0], e[13] = t[1], e[14] = t[2], e[15] = 1, e;\n              }(T, s.translation || I),\n              _n4 = function (e, t) {\n                var s = t[0],\n                r = t[1],\n                n = t[2],\n                i = t[3],\n                a = s + s,\n                o = r + r,\n                f = n + n,\n                u = s * a,\n                h = r * a,\n                c = r * o,\n                l = n * a,\n                d = n * o,\n                m = n * f,\n                g = i * a,\n                p = i * o,\n                b = i * f;\n                return e[0] = 1 - c - m, e[1] = h + b, e[2] = l - p, e[3] = 0, e[4] = h - b, e[5] = 1 - u - m, e[6] = d + g, e[7] = 0, e[8] = l + p, e[9] = d - g, e[10] = 1 - u - c, e[11] = 0, e[12] = 0, e[13] = 0, e[14] = 0, e[15] = 1, e;\n              }(E, s.rotation || R),\n              _i = function (e, t) {\n                return e[0] = t[0], e[1] = 0, e[2] = 0, e[3] = 0, e[4] = 0, e[5] = t[1], e[6] = 0, e[7] = 0, e[8] = 0, e[9] = 0, e[10] = t[2], e[11] = 0, e[12] = 0, e[13] = 0, e[14] = 0, e[15] = 1, e;\n              }(O, s.scale || A);\n              return t(_i, _n4, _i), t(e, _r4, _i);\n            }\n            return function (e) {\n              return e[0] = 1, e[1] = 0, e[2] = 0, e[3] = 0, e[4] = 0, e[5] = 1, e[6] = 0, e[7] = 0, e[8] = 0, e[9] = 0, e[10] = 1, e[11] = 0, e[12] = 0, e[13] = 0, e[14] = 0, e[15] = 1, e;\n            }(e);\n          }([], s);\n          delete s.translation, delete s.rotation, delete s.scale, s.matrix = _e8;\n        }\n        return s;\n      } },\n    {\n      key: \"_loadMaterials\",\n      value: function _loadMaterials(e) {\n        var t = {};\n        for (var _s9 in e) {\n          var _r5 = e[_s9];\n          var _n5 = void 0,\n          _i2 = void 0;\n          _r5.instanceTechnique && _r5.instanceTechnique.values ? (_n5 = _r5.instanceTechnique, _i2 = _n5.values.diffuse) : (_n5 = _r5, _i2 = _n5.values.tex || _n5.values.diffuseTex || _n5.values.diffuse);\n          var _a2 = {\n            baseColorTexture: {\n              index: _i2 } };\n\n\n          _r5.name && (_a2.name = _r5.name), _r5.extensions && (_a2.extensions = _r5.extensions), _r5.extras && (_a2.extras = _r5.extras), t[_s9] = _a2;\n        }\n        return t;\n      } },\n    {\n      key: \"_loadImage\",\n      value: function _loadImage(e) {\n        if (e.bufferView || e.extensions && (e.extensions.KHR_binary_glTF || e.extensions.binary_glTF)) {\n          var _t11 = e.bufferView ? e : e.extensions.KHR_binary_glTF || e.extensions.binary_glTF;\n          e.extensions && (e.mimeType = _t11.mimeType, e.width = _t11.width, e.height = _t11.height);\n          var _s10 = this.gltf.bufferViews[_t11.bufferView],\n          _r6 = (_s10.byteOffset || 0) + this.glbBuffer.byteOffset,\n          _n6 = _s10.byteLength,\n          _i3 = this.buffers[_t11.bufferView] = new Uint8Array(this.glbBuffer.buffer, _r6, _n6);\n          return this.getImageByBuffer(_i3, e);\n        }\n        return this.requestExternalImage(e);\n      } },\n    {\n      key: \"_getTexture\",\n      value: function _getTexture(e) {\n        var _this9 = this;\n        var t = this.gltf.textures[e];\n        if (!t) return null;\n        var s = this.gltf.images[t.source];\n        return this._loadImage(s).then(function (e) {\n          var r = _this9.gltf.samplers[t.sampler];\n          return {\n            image: {\n              array: e.data,\n              width: e.width,\n              height: e.height,\n              index: t.source,\n              mimeType: s.mimeType,\n              name: s.name,\n              extras: s.extras },\n\n            sampler: r };\n\n        });\n      } },\n    {\n      key: \"getBaseColorTexture\",\n      value: function getBaseColorTexture(e) {\n        var t = this.gltf.materials[e];\n        var s, r;\n        if (t.instanceTechnique && t.instanceTechnique.values ? (s = t.instanceTechnique, r = s.values.diffuse) : (s = t, r = s.values.tex || s.values.diffuseTex || s.values.diffuse), void 0 === r || void 0 === this.gltf.textures) return null;\n        var n = this.gltf.textures[r];\n        if (!n) return null;\n        var i = this.gltf.samplers[n.sampler];\n        return {\n          format: n.format || 6408,\n          internalFormat: n.internalFormat || 6408,\n          type: n.type || 5121,\n          sampler: i,\n          source: this.gltf.images[n.source] };\n\n      } },\n    {\n      key: \"getMaterial\",\n      value: function getMaterial() {\n        return null;\n      } },\n    {\n      key: \"getAnimations\",\n      value: function getAnimations() {\n        return null;\n      } }]);\n\n  }(P);\n  var L = 9729;\n  var U = function (_P2) {\n    function U(e, t, s, r, n, i, a, o) {\n      var _this10;\n      _classCallCheck(this, U);\n      _this10 = _callSuper(this, U, [r, n, i, a, o]), _this10.rootPath = e, _this10.gltf = t, _this10.glbBuffer = s, _this10.buffers = {}, _this10.requests = {}, _this10.accessor = new V(e, t, s, a, o);\n      return _this10;\n    }\n    _inherits(U, _P2);\n    return _createClass(U, [{\n      key: \"iterate\",\n      value: function iterate(e, t) {\n        var s = this.gltf[t];\n        if (s) for (var _t12 = 0; _t12 < s.length; _t12++) e(_t12, s[_t12], _t12);\n      } },\n    {\n      key: \"createNode\",\n      value: function createNode(e) {\n        var t = {};\n        return _(t, e), !p(e.weights) && this.gltf.meshes && p(t.mesh) ? t.weights = this.gltf.meshes[t.mesh].weights : e.weights && (t.weights = e.weights), t;\n      } },\n    {\n      key: \"_getTexture\",\n      value: function _getTexture(e) {\n        var _this11 = this;\n        var t = this.gltf.textures[e];\n        if (!t) return null;\n        var s = t.source;\n        if (t.extensions && t.extensions.EXT_texture_webp ? s = t.extensions.EXT_texture_webp.source : t.extensions && t.extensions.KHR_texture_basisu && (s = t.extensions.KHR_texture_basisu.source), !p(s)) return null;\n        var r = this.gltf.images[s];\n        return this._loadImage(r).then(function (e) {\n          if (!e) return null;\n          var s = {\n            image: {\n              array: e.data,\n              mipmap: e.mipmap,\n              width: e.width,\n              height: e.height,\n              index: t.source,\n              mimeType: r.mimeType,\n              name: r.name,\n              extensions: r.extensions,\n              extras: r.extras } };\n\n\n          _(s, t);\n          var n = p(t.sampler) ? _this11.gltf.samplers[t.sampler] : void 0;\n          if (n && (s.sampler = n, s.sampler.magFilter = n.magFilter || L, s.sampler.minFilter = n.minFilter || 9987, s.sampler.wrapS = n.wrapS || 10497, s.sampler.wrapT = n.wrapT || 10497), \"image/ktx2\" === s.image.mimeType && !s.image.mipmap && s.sampler && s.sampler.minFilter !== L && 9728 !== s.sampler.minFilter) {\n            var _e9 = s.sampler.minFilter;\n            s.sampler.minFilter = 9984 === _e9 || 9986 === _e9 ? 9728 : L;\n          }\n          return e.format && (s.format = e.format), s;\n        });\n      } },\n    {\n      key: \"_loadImage\",\n      value: function _loadImage(e) {\n        if (!p(e.bufferView)) return this.requestExternalImage(e);\n        {\n          var _t13 = this.gltf.bufferViews[e.bufferView],\n          _s11 = this.gltf.buffers[_t13.buffer];\n          if (_s11.uri) return this.requestImageFromBufferURI(_s11, _t13, e);\n          if (this.glbBuffer) return this._requestFromGlbBuffer(_t13, e);\n        }\n        return null;\n      } },\n    {\n      key: \"_requestFromGlbBuffer\",\n      value: function _requestFromGlbBuffer(e, t) {\n        var s = this._createDataView(e, this.glbBuffer.buffer, this.glbBuffer.byteOffset);\n        return this.getImageByBuffer(s, t);\n      } },\n    {\n      key: \"_createDataView\",\n      value: function _createDataView(e, t, s) {\n        s = s || 0;\n        var r = (e.byteOffset || 0) + s,\n        n = e.byteLength;\n        return new Uint8Array(t, r, n);\n      } },\n    {\n      key: \"_transformArrayBufferToBase64\",\n      value: function _transformArrayBufferToBase64(e, t) {\n        var s = new Array(e.byteLength);\n        for (var _t14 = 0; _t14 < e.byteLength; _t14++) s[_t14] = String.fromCharCode(e[_t14]);\n        s.join(\"\");\n        var r = \"data:\" + (t = t || \"image/png\") + \";base64,\" + function (e) {\n          return \"undefined\" != typeof self ? self.btoa(e) : window.btoa(e);\n        }(unescape(encodeURIComponent(s)));\n        return r;\n      } },\n    {\n      key: \"getAnimations\",\n      value: function getAnimations(e) {\n        var _this12 = this;\n        var t = [];\n        return e.forEach(function (e) {\n          t.push(_this12.getSamplers(e.samplers));\n        }), Promise.all(t).then(function (t) {\n          for (var _s12 = 0; _s12 < t.length; _s12++) e[_s12].samplers = t[_s12];\n          return e;\n        });\n      } },\n    {\n      key: \"getSamplers\",\n      value: function getSamplers(e) {\n        var t = [];\n        for (var _s13 = 0; _s13 < e.length; _s13++) (p(e[_s13].input) || p(e[_s13].output)) && (t.push(this.accessor._requestData(\"input\", e[_s13].input)), t.push(this.accessor._requestData(\"output\", e[_s13].output)));\n        return Promise.all(t).then(function (t) {\n          for (var _s14 = 0; _s14 < t.length / 2; _s14++) e[_s14].input = t[2 * _s14], e[_s14].output = t[2 * _s14 + 1], e[_s14].interpolation || (e[_s14].interpolation = \"LINEAR\");\n          return e;\n        });\n      } }]);\n\n  }(P);\n  var C = \"undefined\" != typeof TextDecoder ? new TextDecoder(\"utf-8\") : null,\n  F = 1313821514,\n  k = 5130562;\n  var X = function () {\n    function X() {\n      _classCallCheck(this, X);\n    }\n    return _createClass(X, null, [{\n      key: \"read\",\n      value: function read(e) {\n        var t = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n        var s = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n        s || (s = e.byteLength);\n        var r = new DataView(e, t, s),\n        n = r.getUint32(4, !0);\n        if (1 === n) return X.readV1(r, t);\n        if (2 === n) return X.readV2(e, t);\n        throw new Error(\"Unsupported glb version : \" + n);\n      } },\n    {\n      key: \"readV1\",\n      value: function readV1(e, t) {\n        var s = e.getUint32(8, !0),\n        r = e.getUint32(12, !0);\n        if (s !== e.byteLength) throw new Error(\"Length in GLB header is inconsistent with glb's byte length.\");\n        var n = K(e.buffer, 20 + t, r);\n        return {\n          json: JSON.parse(n),\n          glbBuffer: {\n            byteOffset: 20 + t + r,\n            buffer: e.buffer,\n            byteLength: s } };\n\n\n      } },\n    {\n      key: \"readV2\",\n      value: function readV2(e, t) {\n        var s, r, n;\n        var i = new DataView(e, t + 12);\n        var a = 0;\n        for (; a + 8 < i.byteLength;) {\n          var _o = i.getUint32(a, !0);\n          a += 4;\n          var _f = i.getUint32(a, !0);\n          if (a += 4, _f === F) s = K(e, t + 12 + a, _o);else if (_f === k) {\n            n = t + 12 + a, r = _o;\n            break;\n          }\n          a += _o;\n        }\n        return {\n          json: JSON.parse(s),\n          glbBuffer: {\n            byteOffset: n,\n            buffer: e,\n            byteLength: r } };\n\n\n      } }]);\n\n  }();\n  function K(e, t, s) {\n    if (C) {\n      var _r7 = new Uint8Array(e, t, s);\n      return C.decode(_r7);\n    }\n    return function (e) {\n      var t = e.length;\n      var s = \"\";\n      for (var _r8 = 0; _r8 < t;) {\n        var _n7 = e[_r8++];\n        if (128 & _n7) {\n          var _s15 = H[_n7 >> 3 & 7];\n          if (!(64 & _n7) || !_s15 || _r8 + _s15 > t) return null;\n          for (_n7 &= 63 >> _s15; _s15 > 0; _s15 -= 1) {\n            var _t15 = e[_r8++];\n            if (128 != (192 & _t15)) return null;\n            _n7 = _n7 << 6 | 63 & _t15;\n          }\n        }\n        s += String.fromCharCode(_n7);\n      }\n      return s;\n    }(new Uint8Array(e, t, s));\n  }\n  var H = [1, 1, 1, 1, 2, 2, 3, 0];\n  var j = [0, 0, 0],\n  z = [0, 0, 0, 1],\n  W = [1, 1, 1],\n  Y = {\n    TRANSLATION: [0, 0, 0],\n    ROTATION: [0, 0, 0, 1],\n    SCALE: [1, 1, 1] },\n\n  G = {\n    PREVIOUS: null,\n    NEXT: null,\n    PREINDEX: null,\n    NEXTINDEX: null,\n    INTERPOLATION: null },\n\n  $ = {\n    _getTRSW: function _getTRSW(e, t, s, r, i, a, o, f) {\n      var u = p(e) ? t.animations : [t.animations[0]],\n      h = {};\n      for (var _t16 = 0; _t16 < u.length; _t16++) {\n        var _c = u[_t16],\n        _l = _c.name || _t16;\n        if (p(e) && _l !== e) continue;\n        var _m = _c.channelsMap[s];\n        if (_m) for (var _e10 = 0; _e10 < _m.length; _e10++) {\n          var _t17 = _m[_e10];\n          \"translation\" === _t17.target.path ? (this._getAnimateData(i, _c.samplers[_t17.sampler], r, 1), h.translation = n(j, i)) : \"rotation\" === _t17.target.path ? (this._getQuaternion(a, _c.samplers[_t17.sampler], r, 1), h.rotation = d(z, a)) : \"scale\" === _t17.target.path ? (this._getAnimateData(o, _c.samplers[_t17.sampler], r, 1), h.scale = n(W, o)) : \"weights\" === _t17.target.path && f && (this._getAnimateData(f, _c.samplers[_t17.sampler], r, f.length), h.weights = f);\n        }\n      }\n      return h;\n    },\n    _getAnimateData: function _getAnimateData(e, t, s, r) {\n      switch (t.interpolation) {\n        case \"LINEAR\":\n          {\n            var _n8 = this._getPreNext(G, t, s, 1 * r);\n            _n8 && (e = function (e, t, s, r) {\n              for (var _n9 = 0; _n9 < e.length; _n9++) e[_n9] = t[_n9] + r * (s[_n9] - t[_n9]);\n              return e;\n            }(e, _n8.PREVIOUS, _n8.NEXT, _n8.INTERPOLATION));\n            break;\n          }\n        case \"STEP\":\n          {\n            var _n10 = this._getPreNext(G, t, s, 1 * r);\n            _n10 && (e = function (e, t) {\n              for (var _s16 = 0; _s16 < e.length; _s16++) e[_s16] = t[_s16];\n              return e;\n            }.apply(undefined, [e].concat(_toConsumableArray(_n10.PREVIOUS))));\n            break;\n          }\n        case \"CUBICSPLINE\":\n          {\n            var _n11 = this._getPreNext(G, t, s, 3 * r);\n            _n11 && (e = this._getCubicSpline(e, _n11, t.input.array, 3 * r));\n            break;\n          }}\n\n      return e;\n    },\n    _getQuaternion: function _getQuaternion(e, t, s) {\n      switch (t.interpolation) {\n        case \"LINEAR\":\n          {\n            var _r9 = this._getPreNext(G, t, s, 1);\n            _r9 && c(e, _r9.PREVIOUS, _r9.NEXT, _r9.INTERPOLATION);\n            break;\n          }\n        case \"STEP\":\n          {\n            var _r10 = this._getPreNext(G, t, s, 1);\n            _r10 && (e = f.apply(undefined, [e].concat(_toConsumableArray(_r10.PREVIOUS))));\n            break;\n          }\n        case \"CUBICSPLINE\":\n          {\n            var _r11 = this._getPreNext(G, t, s, 3);\n            if (_r11) {\n              for (var _e11 = 0; _e11 < _r11.PREVIOUS.length; _e11++) _r11.PREVIOUS[_e11] = Math.acos(_r11.PREVIOUS[_e11]), _r11.NEXT[_e11] = Math.acos(_r11.NEXT[_e11]);\n              e = this._getCubicSpline(e, _r11, t.input.array, 3);\n              for (var _t18 = 0; _t18 < e.length; _t18++) e[_t18] = Math.cos(e[_t18]);\n            }\n            break;\n          }}\n\n      return e;\n    },\n    _search: function _search(e, t) {\n      var s = e.length;\n      var r,\n      n,\n      i,\n      a = 0,\n      o = s - 1,\n      f = Math.floor((a + o) / 2);\n      for (; a <= s - 1 && o >= 0;) {\n        if (a === o) return null;\n        if (e[f] <= t && t <= e[f + 1]) {\n          var _s17 = e[f];\n          return r = f, n = f + 1, i = (t - _s17) / (e[f + 1] - _s17), {\n            preIndx: r,\n            nextIndex: n,\n            interpolation: i };\n\n        }\n        t < e[f] ? (o = f, f = Math.floor((a + o) / 2)) : e[f + 1] < t && (a = f, f = Math.floor((a + o) / 2));\n      }\n      return null;\n    },\n    _getPreNext: function _getPreNext(e, t, s, r) {\n      var n = t.input.array,\n      i = t.output.array,\n      a = t.output.itemSize;\n      (s < n[0] || s > n[n.length - 1]) && (s = Math.max(n[0], Math.min(n[n.length - 1], s))), s === n[n.length - 1] && (s = n[0]);\n      var o = this._search(n, s);\n      if (!o || !o.nextIndex) return null;\n      var f = o.preIndx,\n      u = o.nextIndex,\n      h = o.interpolation;\n      e.PREINDEX = f, e.NEXTINDEX = u, e.INTERPOLATION = h;\n      var c = a * r;\n      return e.PREVIOUS = i.subarray(e.PREINDEX * c, (e.PREINDEX + 1) * c), e.NEXT = i.subarray(e.NEXTINDEX * c, (e.NEXTINDEX + 1) * c), e;\n    },\n    _getCubicSpline: function _getCubicSpline(e, t, s, r) {\n      var n = t.INTERPOLATION,\n      i = s[t.PREINDEX],\n      a = s[t.NEXTINDEX];\n      for (var _s18 = 0; _s18 < 3; _s18++) {\n        var _o2 = t.PREVIOUS[r + _s18],\n        _f2 = (a - i) * t.PREVIOUS[2 * r + _s18],\n        _u = t.NEXT[3 + _s18],\n        _h2 = (a - i) * t.NEXT[_s18],\n        _c2 = (2 * Math.pow(n, 3) - 3 * Math.pow(n, 2) + 1) * _o2 + (Math.pow(n, 3) - 2 * Math.pow(n, 2) + n) * _f2 + (2 * -Math.pow(n, 3) + 3 * Math.pow(n, 2)) * _u + (Math.pow(n, 3) - Math.pow(n, 2)) * _h2;\n        e[_s18] = _c2;\n      }\n      return e;\n    },\n    getAnimationClip: function getAnimationClip(e, t, s, r) {\n      var n = e.nodes[t] && e.nodes[t].weights;\n      i.apply(undefined, [j].concat(_toConsumableArray(Y.TRANSLATION))), f.apply(undefined, [z].concat(_toConsumableArray(Y.ROTATION))), i.apply(undefined, [W].concat(_toConsumableArray(Y.SCALE)));\n      return this._getTRSW(r, e, t, s, j, z, W, n);\n    },\n    getTimeSpan: function getTimeSpan(e) {\n      if (!e.animations) return null;\n      if (e.timeSpan) return e.timeSpan;\n      var t = e.animations;\n      return e.timeSpan = {}, t.forEach(function (t, s) {\n        var r = -1 / 0,\n        n = 1 / 0;\n        var i = t.channels;\n        for (var _e12 = 0; _e12 < i.length; _e12++) {\n          var _s19 = i[_e12],\n          _a3 = t.samplers[_s19.sampler].input.array;\n          _a3[_a3.length - 1] > r && (r = _a3[_a3.length - 1]), _a3[0] < n && (n = _a3[0]);\n        }\n        var a = t.name || s;\n        e.timeSpan[a] = {\n          max: r,\n          min: n };\n\n      }), e.timeSpan;\n    },\n    getTimeSpanByName: function getTimeSpanByName(e, t) {\n      var s = this.getTimeSpan(e);\n      return s ? p(t) ? s[t] : s[Object.keys(s)[0]] : null;\n    } };\n\n  var J = !1;\n  if (\"undefined\" != typeof OffscreenCanvas) {\n    var _e13;\n    try {\n      _e13 = new OffscreenCanvas(2, 2).getContext(\"2d\");\n    } catch (e) {}\n    _e13 && \"undefined\" != typeof createImageBitmap && (J = !0);\n  }\n  var Q = \"undefined\" == typeof document ? null : document.createElement(\"canvas\");\n  var Z = exports.GLTFLoader = function () {\n    function Z(e, t, s) {\n      _classCallCheck(this, Z);\n      if (this.options = s || {}, this.options.decoders || (this.options.decoders = {}), this._fetchOptions = this.options.fetchOptions || {}, t.buffer instanceof ArrayBuffer) {\n        var _X$read = X.read(t.buffer, t.byteOffset, t.byteLength),\n        _s20 = _X$read.json,\n        _r12 = _X$read.glbBuffer;\n        this._init(e, _s20, _r12);\n      } else this._init(e, t);\n      this._accessor = new V(this.rootPath, this.gltf, this.glbBuffer, this._fetchOptions, this.options.urlModifier), this._checkExtensions();\n    }\n    return _createClass(Z, [{\n      key: \"_checkExtensions\",\n      value: function _checkExtensions() {\n        var e = this.gltf.extensionsRequired;\n        if (e) {\n          if (e.indexOf(\"KHR_draco_mesh_compression\") >= 0 && !this.options.decoders.draco) throw new Error(\"KHR_draco_mesh_compression is required but @maptalks/transcoders.draco is not loaded\");\n          if (e.indexOf(\"KHR_texture_basisu\") >= 0 && !this.options.decoders[\"image/ktx2\"]) throw new Error(\"KHR_texture_basisu is required but @maptalks/transcoders.ktx2 is not loaded\");\n          if (e.indexOf(\"EXT_meshopt_compression\") >= 0) throw new Error(\"EXT_meshopt_compression extension is not supported yet.\");\n        }\n      } },\n    {\n      key: \"_loadExtensions\",\n      value: function _loadExtensions() {\n        var e = this.gltf.extensions;\n        return e && e.KHR_techniques_webgl ? this._accessor.requestKHRTechniquesWebgl(e.KHR_techniques_webgl).then(function (t) {\n          return e.KHR_techniques_webgl = t, e;\n        }) : Promise.resolve(e);\n      } },\n    {\n      key: \"_convertKhrTechiqueToTechiques\",\n      value: function _convertKhrTechiqueToTechiques() {\n        if (!Array.isArray(this.gltf.programs)) return;\n        var e = this.gltf.materials;\n        for (var _t19 = 0; _t19 < e.length; _t19++) e[_t19] && e[_t19].extensions && e[_t19].extensions.KHR_technique_webgl && (e[_t19].extensions.KHR_techniques_webgl = e[_t19].extensions.KHR_technique_webgl, delete e[_t19].extensions.KHR_technique_webgl);\n        var t = this.gltf.extensions || {},\n        s = this.gltf.techniques;\n        t.KHR_techniques_webgl = {\n          programs: this.gltf.programs,\n          shaders: this.gltf.shaders,\n          techniques: s };\n\n        for (var _t20 = 0; _t20 < e.length; _t20++) {\n          var _n12 = (r = e[_t20]) && r.extensions && r.extensions.KHR_techniques_webgl;\n          if (_n12) {\n            var _e14 = _n12.values,\n            _t21 = _n12.technique,\n            _r13 = s[_t21];\n            if (!_r13 || !_e14) continue;\n            var _i4 = _r13.uniforms,\n            _a4 = _r13.parameters,\n            _o3 = {};\n            for (var _t22 in _e14) {\n              var _s21 = ce(_i4, _t22);\n              _o3[_s21] = _e14[_t22], _a4[_t22] && 35678 === _a4[_t22].type && (_o3[_s21] = {\n                index: _e14[_t22] });\n\n            }\n            _n12.values = _o3;\n          }\n        }\n        var r;\n        for (var _e15 = 0; _e15 < s.length; _e15++) {\n          var _t23 = s[_e15];\n          if (!_t23) continue;\n          var _r14 = _t23.attributes,\n          _n13 = _t23.uniforms,\n          _i5 = _t23.parameters;\n          if (_r14) for (var _e16 in _r14) {\n            var _t24 = _r14[_e16];\n            _r14[_e16] = _i5[_t24];\n          }\n          if (_n13) for (var _e17 in _n13) {\n            var _t25 = _n13[_e17];\n            _n13[_e17] = _i5[_t25];\n          }\n          delete _t23.parameters;\n        }\n        return delete this.gltf.programs, delete this.gltf.shaders, delete this.gltf.techniques, this.gltf.extensions = t, t;\n      } },\n    {\n      key: \"load\",\n      value: function load(e) {\n        var _this13 = this;\n        e = e || {}, this._convertKhrTechiqueToTechiques();\n        var t = this._loadScene(e),\n        s = this._loadAnimations(),\n        r = this._loadTextures(),\n        n = this._loadExtensions();\n        return Promise.all([t, s, r, n]).then(function (e) {\n          return e[0].animations = e[1], e[0].textures = e[2], e[0].extensions = e[3], e[0].transferables = _this13.transferables || [], _this13.createChannelsMap(e[0]), e[0];\n        });\n      } },\n    {\n      key: \"createChannelsMap\",\n      value: function createChannelsMap(e) {\n        var t = e.animations;\n        if (t) for (var _e18 = 0; _e18 < t.length; _e18++) {\n          var _s22 = t[_e18];\n          _s22.channelsMap = {};\n          for (var _e19 = 0; _e19 < _s22.channels.length; _e19++) {\n            var _t26 = _s22.channels[_e19];\n            _s22.channelsMap[_t26.target.node] || (_s22.channelsMap[_t26.target.node] = []), _s22.channelsMap[_t26.target.node].push(_t26);\n          }\n        }\n      } },\n    {\n      key: \"getExternalResources\",\n      value: function getExternalResources() {\n        var e = [];\n        if (this.gltf) {\n          var _this$gltf = this.gltf,\n          _t27 = _this$gltf.buffers,\n          _s23 = _this$gltf.images;\n          for (var _s24 = 0; _s24 < _t27.length; _s24++) _t27[_s24].uri && _t27[_s24].uri.indexOf(\"data:application/octet-stream;base64\") < 0 && e.push({\n            type: \"buffer\",\n            uri: _t27[_s24].uri });\n\n          for (var _t28 = 0; _t28 < _s23.length; _t28++) _s23[_t28].uri && _s23[_t28].uri.indexOf(\"data:image/\") < 0 && e.push({\n            type: \"image\",\n            uri: _s23[_t28].uri });\n\n        }\n        return e;\n      } },\n    {\n      key: \"_init\",\n      value: function _init(e, t, s) {\n        this.gltf = t, this.glbBuffer = s, this.version = t.asset ? +t.asset.version : 1, this.rootPath = e, this.buffers = {}, this.requests = {}, this.options.requestImage = J ? ae.bind(this) : this.options.requestImage || ee, this.options.transferable && (this.transferables = []), 2 === this.version ? (this.adapter = new U(e, t, s, this.options.requestImage, this.options.decoders || {}, this.options.supportedFormats || {}, this._fetchOptions, this.options.urlModifier), this.adapter.iterate(function (e, t, s) {\n          t.id = \"buffer_\" + s;\n        }, \"buffers\"), this.adapter.iterate(function (e, t, s) {\n          t.id = \"image_\" + s;\n        }, \"images\"), this.adapter.iterate(function (e, t, s) {\n          t.id = \"accessor_\" + s;\n        }, \"accessors\")) : (this.adapter = new D(e, t, s, this.options.requestImage, this.options.decoders || {}, this.options.supportedFormats || {}, this._fetchOptions, this.options.urlModifier), this.adapter.iterate(function (e, t, s) {\n          t.id = \"accessor_\" + s;\n        }, \"accessors\"), this.adapter.iterate(function (e, t, s) {\n          t.id = \"image_\" + s;\n        }, \"images\"));\n      } },\n    {\n      key: \"_parseNodes\",\n      value: function _parseNodes(e, t) {\n        var _this14 = this;\n        if (e.children && e.children.length > 0) {\n          if (!(s = e.children[0], \"number\" == typeof s && isFinite(s) || b(e.children[0]))) return e;\n          var _r15 = e.children.map(function (e) {\n            var s = t[e];\n            return s.nodeIndex = e, _this14._parseNodes(s, t);\n          });\n          e.children = _r15;\n        }\n        var s;\n        return e;\n      } },\n    {\n      key: \"_loadScene\",\n      value: function _loadScene(e) {\n        var _this15 = this;\n        return this._loadNodes(e).then(function (e) {\n          var t = _this15.scenes = [];\n          var s;\n          for (var _t29 in e) e[_t29] = _this15._parseNodes(e[_t29], e), e[_t29].nodeIndex = Number(_t29) ? Number(_t29) : _t29;\n          _this15.adapter.iterate(function (r, n, i) {\n            var a = {};\n            n.name && (a.name = n.name), n.nodes && (a.nodes = n.nodes.map(function (t) {\n              return e[t];\n            })), _this15.gltf.scene === r && (s = i), t.push(a);\n          }, \"scenes\");\n          var r = {\n            textures: _this15.gltf.textures,\n            asset: _this15.gltf.asset,\n            scene: s,\n            scenes: t,\n            nodes: e,\n            meshes: _this15.meshes,\n            materials: _this15.gltf.materials,\n            skins: _this15.skins,\n            extensionsRequired: _this15.gltf.extensionsRequired,\n            extensionsUsed: _this15.gltf.extensionsUsed };\n\n          if (_this15.gltf.extensions && (r.extensions = _this15.gltf.extensions), 1 === _this15.version) {\n            var _e20 = _this15.adapter._loadMaterials(_this15.gltf.materials);\n            r.materials = _e20;\n          }\n          return delete _this15.gltf.buffers, r.json = _this15.gltf, r;\n        });\n      } },\n    {\n      key: \"_loadNodes\",\n      value: function _loadNodes(e) {\n        var _this16 = this;\n        return this._loadMeshes(e).then(function () {\n          var e = _this16.nodes = {};\n          return _this16.adapter.iterate(function (t, s) {\n            var r = _this16.adapter.createNode(s, _this16.meshes, _this16.skins);\n            e[t] = r;\n          }, \"nodes\"), e;\n        });\n      } },\n    {\n      key: \"_loadSkins\",\n      value: function _loadSkins() {\n        var _this17 = this;\n        this.skins = [];\n        var e = [];\n        return this.adapter.iterate(function (t, s, r) {\n          e.push(_this17._loadSkin(s).then(function (e) {\n            e.index = r, _this17.skins.push(e);\n          }));\n        }, \"skins\"), e;\n      } },\n    {\n      key: \"_loadSkin\",\n      value: function _loadSkin(e) {\n        var _this18 = this;\n        var t = e.inverseBindMatrices;\n        return this.adapter.accessor._requestData(\"inverseBindMatrices\", t).then(function (t) {\n          return e.inverseBindMatrices = t, t && t.buffer && _this18.transferables && _this18.transferables.indexOf(t.buffer) < 0 && _this18.transferables.push(t.buffer), e;\n        });\n      } },\n    {\n      key: \"_loadAnimations\",\n      value: function _loadAnimations() {\n        var e = this.gltf.animations;\n        return p(e) ? this.adapter.getAnimations(e) : null;\n      } },\n    {\n      key: \"_loadMeshes\",\n      value: function _loadMeshes(e) {\n        var _this19 = this;\n        this.meshes = {};\n        var t = [];\n        return this.adapter.iterate(function (s, r, n) {\n          t.push(_this19._loadMesh(r, e).then(function (e) {\n            e.index = n, _this19.meshes[s] = e;\n          }));\n        }, \"meshes\"), t = t.concat(this._loadSkins()), Promise.all(t);\n      } },\n    {\n      key: \"_loadMesh\",\n      value: function _loadMesh(e, t) {\n        var _this20 = this;\n        var s = e.primitives.map(function (e) {\n          return _this20._loadPrimitive(e, t);\n        }).filter(function (e) {\n          return !!e;\n        });\n        return Promise.all(s).then(function (t) {\n          var s = {};\n          return _(s, e), s.primitives = t, s;\n        });\n      } },\n    {\n      key: \"_loadTextures\",\n      value: function _loadTextures() {\n        var _this21 = this;\n        var e = this.gltf.textures;\n        if (!e) return null;\n        var t = [];\n        for (var _s25 in e) t.push(this.adapter._getTexture(_s25));\n        return Promise.all(t).then(function (t) {\n          if (_this21.transferables) for (var _e21 = 0; _e21 < t.length; _e21++) {\n            var _s26 = t[_e21] && t[_e21].image.array;\n            if (_s26) {\n              var _e22 = void 0;\n              _e22 = _s26 instanceof ImageBitmap ? _s26 : _s26.buffer, _e22 && _this21.transferables.indexOf(_e22) < 0 && _this21.transferables.push(_e22);\n            }\n          }\n          if (!Array.isArray(e)) {\n            var _s27 = {},\n            _r16 = Object.keys(e);\n            for (var _e23 = 0; _e23 < t.length; _e23++) t[_e23] && (_s27[_r16[_e23]] = t[_e23]);\n            return _s27;\n          }\n          return t;\n        });\n      } },\n    {\n      key: \"_loadPrimitive\",\n      value: function _loadPrimitive(e, t) {\n        var _this22 = this;\n        var s;\n        var r = [],\n        n = e.extensions;\n        if (p(e.targets)) for (var _t30 = 0; _t30 < e.targets.length; _t30++) {\n          var _s28 = e.targets[_t30];\n          for (var _e24 in _s28) {\n            var _n14 = this.adapter.accessor._requestData(\"morphTargets_\".concat(_e24, \"_\").concat(_t30), _s28[_e24]);\n            _n14 && r.push(_n14);\n          }\n        }\n        if (n && n.KHR_draco_mesh_compression) {\n          if (!this.options.decoders.draco && (!this.gltf.extensionsRequired || !this.gltf.extensionsRequired.indexOf(\"KHR_draco_mesh_compression\") < 0)) return null;\n          var _e25 = this.options.decoders.draco,\n          _n$KHR_draco_mesh_com = n.KHR_draco_mesh_compression,\n          _i6 = _n$KHR_draco_mesh_com.bufferView,\n          _a5 = _n$KHR_draco_mesh_com.attributes,\n          _o4 = this.gltf.bufferViews[_i6],\n          _f3 = this._accessor._requestBufferOfBufferView(_o4).then(function (s) {\n            var r = s.buffer,\n            n = s.byteOffset;\n            var i = _o4.byteOffset;\n            var f = _o4.byteLength;\n            i || (i = 0);\n            var u = new DataView(r, n + i, f),\n            h = {\n              attributes: _a5,\n              useUniqueIDs: !1,\n              skipAttributeTransform: t.skipAttributeTransform };\n\n            return _e25(u, h).then(function (e) {\n              var t = Object.values(e.attributes);\n              return e.indices && t.push(e.indices), t;\n            });\n          });\n          r.push(_f3), s = Promise.all(r);\n        } else {\n          var _t31 = e.attributes;\n          for (var _e26 in _t31) {\n            var _s29 = this.adapter.accessor._requestData(_e26, _t31[_e26]);\n            _s29 && r.push(_s29);\n          }\n          if (p(e.indices)) {\n            var _t32 = this.adapter.accessor._requestData(\"indices\", e.indices);\n            _t32 && r.push(_t32);\n          }\n          s = Promise.all(r);\n        }\n        return s.then(function (t) {\n          if (n && n.KHR_draco_mesh_compression) {\n            var _s30 = e.targets ? e.targets.length : 0;\n            t[_s30] = t[_s30].concat(t.slice(0, _s30)), t = t[_s30];\n          }\n          var s, r;\n          var i = {\n            attributes: t.reduce(function (e, t) {\n              if (\"indices\" === t.name) s = t;else if (t.name.indexOf(\"morphTargets_\") > -1) r = r || {}, r[t.name.slice(13)] = t;else {\n                if (!(\"POSITION\" !== t.name || t.min && t.max)) {\n                  var _e27 = [1 / 0, 1 / 0, 1 / 0],\n                  _s31 = [-1 / 0, -1 / 0, -1 / 0],\n                  _r17 = t.itemSize,\n                  _n15 = t.array,\n                  _i7 = _n15.length / _r17;\n                  for (var _t33 = 0; _t33 < _i7; _t33++) for (var _i8 = 0; _i8 < _r17; _i8++) {\n                    var _a6 = _t33 * _r17 + _i8;\n                    _n15[_a6] < _e27[_i8] && (_e27[_i8] = _n15[_a6]), _n15[_a6] > _s31[_i8] && (_s31[_i8] = _n15[_a6]);\n                  }\n                  if (t.quantization) {\n                    var _r18 = t.quantization,\n                    _n16 = _r18.range / (1 << _r18.quantizationBits),\n                    _i9 = _r18.minValues;\n                    o(_e27, _e27, _n16), a(_e27, _e27, _i9), o(_s31, _s31, _n16), a(_s31, _s31, _i9);\n                  }\n                  t.min = _e27, t.max = _s31;\n                }\n                e[t.name] = t;\n              }\n              return _this22.transferables && t.array.buffer && _this22.transferables.indexOf(t.array.buffer) < 0 && _this22.transferables.push(t.array.buffer), e;\n            }, {}),\n            material: e.material };\n\n          return s && (i.indices = s), r && (i.morphTargets = r), i.mode = p(e.mode) ? e.mode : 4, p(e.extras) && (i.extras = e.extras), i;\n        });\n      } }],\n    [{\n      key: \"getAnimationClip\",\n      value: function getAnimationClip(e, t, s, r) {\n        return $.getAnimationClip(e, t, s, r);\n      } },\n    {\n      key: \"getAnimationTimeSpan\",\n      value: function getAnimationTimeSpan(e, t) {\n        return $.getTimeSpanByName(e, t);\n      } },\n    {\n      key: \"getTypedArrayCtor\",\n      value: function getTypedArrayCtor(e) {\n        return y(e);\n      } },\n    {\n      key: \"readInterleavedArray\",\n      value: function readInterleavedArray(e, t, s, r, n, i, a) {\n        return q(e, t, s, r, n, i, a);\n      } }]);\n\n  }();\n  function ee(e, t, s) {\n    var r = new Image();\n    r.crossOrigin = \"\", r.onload = function () {\n      if (!Q) return void s(new Error(\"There is no canvas to draw image!\"));\n      Q.width = r.width, Q.height = r.height;\n      var e = Q.getContext(\"2d\", {\n        willReadFrequently: !0 });\n\n      e.drawImage(r, 0, 0, r.width, r.height);\n      var t = e.getImageData(0, 0, r.width, r.height),\n      n = {\n        width: r.width,\n        height: r.height,\n        data: new Uint8Array(t.data) };\n\n      s(null, n);\n    }, r.onerror = function (e) {\n      s(e);\n    }, r.src = e;\n  }\n  var te = [],\n  se = [],\n  re = 30;\n  var ne, ie;\n  function ae(e, t, s) {\n    ne || (ne = new OffscreenCanvas(2, 2), ie = ne.getContext(\"2d\", {\n      willReadFrequently: !0 }));\n\n    var r = null;\n    if (b(e)) this.options.urlModifier && (e = this.options.urlModifier(e)), te.push([e, t, s, this]), oe();else {\n      var _t34 = new Blob([e]);\n      r = createImageBitmap(_t34), r.then(fe.bind(this)).then(function (e) {\n        s(null, e);\n      }).catch(function (e) {\n        console.warn(e), s(e);\n      });\n    }\n  }\n  function oe() {\n    if (!te.length || se.length > re) return;\n    var e = te.shift(),\n    _e28 = _slicedToArray(e, 4),\n    t = _e28[0],\n    s = _e28[1],\n    r = _e28[2],\n    n = _e28[3];\n    se.push(e), fetch(t, s).then(function (e) {\n      return e.arrayBuffer();\n    }).then(function (e) {\n      var t = new Blob([new Uint8Array(e)]);\n      return createImageBitmap(t);\n    }).then(fe.bind(n)).then(function (t) {\n      r.call(n, null, t);\n      var s = se.indexOf(e);\n      se.splice(s, 1), oe();\n    }).catch(function (t) {\n      console.warn(t), r.call(n, t);\n      var s = se.indexOf(e);\n      se.splice(s, 1), oe();\n    });\n  }\n  function fe(e) {\n    var t = e.width,\n    s = e.height;\n    ue(t) || (t = he(t)), ue(s) || (s = he(s));\n    var r = this.options.maxTextureSize;\n    r && (t = Math.min(r, t), s = Math.min(r, s)), ne.width = t, ne.height = s, ie.drawImage(e, 0, 0, t, s), e.close();\n    var n = ie.getImageData(0, 0, t, s);\n    return {\n      width: t,\n      height: s,\n      data: new Uint8Array(n.data) };\n\n  }\n  function ue(e) {\n    return !(e & e - 1) && 0 !== e;\n  }\n  function he(e) {\n    return Math.pow(2, Math.floor(Math.log(e) / Math.LN2));\n  }\n  function ce(e, t) {\n    for (var _s32 in e) if (e[_s32] === t) return _s32;\n    return t;\n  }return module.exports;});",
    "requires": [],
    "buildLevel": 0,
    "fileName": "/dist/gltf-loader.es.js"
  }
}