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Code Editor : GLTFLoader.js
Sz.packages(function(){!function(){function e(){let e={};return{get:function(t){return e[t]},add:function(t,s){e[t]=s},remove:function(t){delete e[t]},removeAll:function(){e={}}}}const t={KHR_BINARY_GLTF:"KHR_binary_glTF",KHR_DRACO_MESH_COMPRESSION:"KHR_draco_mesh_compression",KHR_LIGHTS_PUNCTUAL:"KHR_lights_punctual",KHR_MATERIALS_CLEARCOAT:"KHR_materials_clearcoat",KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:"KHR_materials_pbrSpecularGlossiness",KHR_MATERIALS_TRANSMISSION:"KHR_materials_transmission",KHR_MATERIALS_UNLIT:"KHR_materials_unlit",KHR_TEXTURE_BASISU:"KHR_texture_basisu",KHR_TEXTURE_TRANSFORM:"KHR_texture_transform",KHR_MESH_QUANTIZATION:"KHR_mesh_quantization",EXT_TEXTURE_WEBP:"EXT_texture_webp",EXT_MESHOPT_COMPRESSION:"EXT_meshopt_compression"};class s{constructor(e){this.parser=e,this.name=t.KHR_LIGHTS_PUNCTUAL,this.cache={refs:{},uses:{}}}_markDefs(){const e=this.parser,t=this.parser.json.nodes||[];for(let s=0,n=t.length;s<n;s++){const n=t[s];n.extensions&&n.extensions[this.name]&&void 0!==n.extensions[this.name].light&&e._addNodeRef(this.cache,n.extensions[this.name].light)}}_loadLight(e){const t=this.parser,s="light:"+e;let n=t.cache.get(s);if(n)return n;const r=t.json,o=((r.extensions&&r.extensions[this.name]||{}).lights||[])[e];let a;const i=new THREE.Color(16777215);void 0!==o.color&&i.fromArray(o.color);const l=void 0!==o.range?o.range:0;switch(o.type){case"directional":(a=new THREE.DirectionalLight(i)).target.position.set(0,0,-1),a.add(a.target);break;case"point":(a=new THREE.PointLight(i)).distance=l;break;case"spot":(a=new THREE.SpotLight(i)).distance=l,o.spot=o.spot||{},o.spot.innerConeAngle=void 0!==o.spot.innerConeAngle?o.spot.innerConeAngle:0,o.spot.outerConeAngle=void 0!==o.spot.outerConeAngle?o.spot.outerConeAngle:Math.PI/4,a.angle=o.spot.outerConeAngle,a.penumbra=1-o.spot.innerConeAngle/o.spot.outerConeAngle,a.target.position.set(0,0,-1),a.add(a.target);break;default:throw new Error("THREE.GLTFLoader: Unexpected light type: "+o.type)}return a.position.set(0,0,0),a.decay=2,void 0!==o.intensity&&(a.intensity=o.intensity),a.name=t.createUniqueName(o.name||"light_"+e),n=Promise.resolve(a),t.cache.add(s,n),n}createNodeAttachment(e){const t=this,s=this.parser,n=s.json.nodes[e],r=(n.extensions&&n.extensions[this.name]||{}).light;return void 0===r?null:this._loadLight(r).then(function(e){return s._getNodeRef(t.cache,r,e)})}}class n{constructor(){this.name=t.KHR_MATERIALS_UNLIT}getMaterialType(){return THREE.MeshBasicMaterial}extendParams(e,t,s){const n=[];e.color=new THREE.Color(1,1,1),e.opacity=1;const r=t.pbrMetallicRoughness;if(r){if(Array.isArray(r.baseColorFactor)){const t=r.baseColorFactor;e.color.fromArray(t),e.opacity=t[3]}void 0!==r.baseColorTexture&&n.push(s.assignTexture(e,"map",r.baseColorTexture))}return Promise.all(n)}}class r{constructor(e){this.parser=e,this.name=t.KHR_MATERIALS_CLEARCOAT}getMaterialType(e){const t=this.parser.json.materials[e];return t.extensions&&t.extensions[this.name]?THREE.MeshPhysicalMaterial:null}extendMaterialParams(e,t){const s=this.parser,n=s.json.materials[e];if(!n.extensions||!n.extensions[this.name])return Promise.resolve();const r=[],o=n.extensions[this.name];if(void 0!==o.clearcoatFactor&&(t.clearcoat=o.clearcoatFactor),void 0!==o.clearcoatTexture&&r.push(s.assignTexture(t,"clearcoatMap",o.clearcoatTexture)),void 0!==o.clearcoatRoughnessFactor&&(t.clearcoatRoughness=o.clearcoatRoughnessFactor),void 0!==o.clearcoatRoughnessTexture&&r.push(s.assignTexture(t,"clearcoatRoughnessMap",o.clearcoatRoughnessTexture)),void 0!==o.clearcoatNormalTexture&&(r.push(s.assignTexture(t,"clearcoatNormalMap",o.clearcoatNormalTexture)),void 0!==o.clearcoatNormalTexture.scale)){const e=o.clearcoatNormalTexture.scale;t.clearcoatNormalScale=new THREE.Vector2(e,-e)}return Promise.all(r)}}class o{constructor(e){this.parser=e,this.name=t.KHR_MATERIALS_TRANSMISSION}getMaterialType(e){const t=this.parser.json.materials[e];return t.extensions&&t.extensions[this.name]?THREE.MeshPhysicalMaterial:null}extendMaterialParams(e,t){const s=this.parser,n=s.json.materials[e];if(!n.extensions||!n.extensions[this.name])return Promise.resolve();const r=[],o=n.extensions[this.name];return void 0!==o.transmissionFactor&&(t.transmission=o.transmissionFactor),void 0!==o.transmissionTexture&&r.push(s.assignTexture(t,"transmissionMap",o.transmissionTexture)),Promise.all(r)}}class a{constructor(e){this.parser=e,this.name=t.KHR_TEXTURE_BASISU}loadTexture(e){const t=this.parser,s=t.json,n=s.textures[e];if(!n.extensions||!n.extensions[this.name])return null;const r=n.extensions[this.name],o=s.images[r.source],a=t.options.ktx2Loader;if(!a){if(s.extensionsRequired&&s.extensionsRequired.indexOf(this.name)>=0)throw new Error("THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures");return null}return t.loadTextureImage(e,o,a)}}class i{constructor(e){this.parser=e,this.name=t.EXT_TEXTURE_WEBP,this.isSupported=null}loadTexture(e){const t=this.name,s=this.parser,n=s.json,r=n.textures[e];if(!r.extensions||!r.extensions[t])return null;const o=r.extensions[t],a=n.images[o.source];let i=s.textureLoader;if(a.uri){const e=s.options.manager.getHandler(a.uri);null!==e&&(i=e)}return this.detectSupport().then(function(r){if(r)return s.loadTextureImage(e,a,i);if(n.extensionsRequired&&n.extensionsRequired.indexOf(t)>=0)throw new Error("THREE.GLTFLoader: WebP required by asset but unsupported.");return s.loadTexture(e)})}detectSupport(){return this.isSupported||(this.isSupported=new Promise(function(e){const t=new Image;t.src="data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA",t.onload=t.onerror=function(){e(1===t.height)}})),this.isSupported}}class l{constructor(e){this.name=t.EXT_MESHOPT_COMPRESSION,this.parser=e}loadBufferView(e){const t=this.parser.json,s=t.bufferViews[e];if(s.extensions&&s.extensions[this.name]){const e=s.extensions[this.name],n=this.parser.getDependency("buffer",e.buffer),r=this.parser.options.meshoptDecoder;if(!r||!r.supported){if(t.extensionsRequired&&t.extensionsRequired.indexOf(this.name)>=0)throw new Error("THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files");return null}return Promise.all([n,r.ready]).then(function(t){const s=e.byteOffset||0,n=e.byteLength||0,o=e.count,a=e.byteStride,i=new ArrayBuffer(o*a),l=new Uint8Array(t[0],s,n);return r.decodeGltfBuffer(new Uint8Array(i),o,a,l,e.mode,e.filter),i})}return null}}const c="glTF",u=12,h={JSON:1313821514,BIN:5130562};class p{constructor(e){this.name=t.KHR_BINARY_GLTF,this.content=null,this.body=null;const s=new DataView(e,0,u);if(this.header={magic:THREE.LoaderUtils.decodeText(new Uint8Array(e.slice(0,4))),version:s.getUint32(4,!0),length:s.getUint32(8,!0)},this.header.magic!==c)throw new Error("THREE.GLTFLoader: Unsupported glTF-Binary header.");if(this.header.version<2)throw new Error("THREE.GLTFLoader: Legacy binary file detected.");const n=this.header.length-u,r=new DataView(e,u);let o=0;for(;o<n;){const t=r.getUint32(o,!0);o+=4;const s=r.getUint32(o,!0);if(o+=4,s===h.JSON){const s=new Uint8Array(e,u+o,t);this.content=THREE.LoaderUtils.decodeText(s)}else if(s===h.BIN){const s=u+o;this.body=e.slice(s,s+t)}o+=t}if(null===this.content)throw new Error("THREE.GLTFLoader: JSON content not found.")}}class d{constructor(e,s){if(!s)throw new Error("THREE.GLTFLoader: No DRACOLoader instance provided.");this.name=t.KHR_DRACO_MESH_COMPRESSION,this.json=e,this.dracoLoader=s,this.dracoLoader.preload()}decodePrimitive(e,t){const s=this.json,n=this.dracoLoader,r=e.extensions[this.name].bufferView,o=e.extensions[this.name].attributes,a={},i={},l={};for(const e in o){const t=A[e]||e.toLowerCase();a[t]=o[e]}for(const t in e.attributes){const n=A[t]||t.toLowerCase();if(void 0!==o[t]){const r=s.accessors[e.attributes[t]],o=x[r.componentType];l[n]=o,i[n]=!0===r.normalized}}return t.getDependency("bufferView",r).then(function(e){return new Promise(function(t){n.decodeDracoFile(e,function(e){for(const t in e.attributes){const s=e.attributes[t],n=i[t];void 0!==n&&(s.normalized=n)}t(e)},a,l)})})}}class m{constructor(){this.name=t.KHR_TEXTURE_TRANSFORM}extendTexture(e,t){return void 0!==t.texCoord&&console.warn('THREE.GLTFLoader: Custom UV sets in "'+this.name+'" extension not yet supported.'),void 0===t.offset&&void 0===t.rotation&&void 0===t.scale?e:(e=e.clone(),void 0!==t.offset&&e.offset.fromArray(t.offset),void 0!==t.rotation&&(e.rotation=t.rotation),void 0!==t.scale&&e.repeat.fromArray(t.scale),e.needsUpdate=!0,e)}}class f extends THREE.MeshStandardMaterial{constructor(e){super(),this.isGLTFSpecularGlossinessMaterial=!0;const t=["#ifdef USE_SPECULARMAP","\tuniform sampler2D specularMap;","#endif"].join("\n"),s=["#ifdef USE_GLOSSINESSMAP","\tuniform sampler2D glossinessMap;","#endif"].join("\n"),n=["vec3 specularFactor = specular;","#ifdef USE_SPECULARMAP","\tvec4 texelSpecular = texture2D( specularMap, vUv );","\ttexelSpecular = sRGBToLinear( texelSpecular );","\t// reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture","\tspecularFactor *= texelSpecular.rgb;","#endif"].join("\n"),r=["float glossinessFactor = glossiness;","#ifdef USE_GLOSSINESSMAP","\tvec4 texelGlossiness = texture2D( glossinessMap, vUv );","\t// reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture","\tglossinessFactor *= texelGlossiness.a;","#endif"].join("\n"),o=["PhysicalMaterial material;","material.diffuseColor = diffuseColor.rgb * ( 1. - max( specularFactor.r, max( specularFactor.g, specularFactor.b ) ) );","vec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );","float geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );","material.specularRoughness = max( 1.0 - glossinessFactor, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.","material.specularRoughness += geometryRoughness;","material.specularRoughness = min( material.specularRoughness, 1.0 );","material.specularColor = specularFactor;"].join("\n"),a={specular:{value:(new THREE.Color).setHex(16777215)},glossiness:{value:1},specularMap:{value:null},glossinessMap:{value:null}};this._extraUniforms=a,this.onBeforeCompile=function(e){for(const t in a)e.uniforms[t]=a[t];e.fragmentShader=e.fragmentShader.replace("uniform float roughness;","uniform vec3 specular;").replace("uniform float metalness;","uniform float glossiness;").replace("#include <roughnessmap_pars_fragment>",t).replace("#include <metalnessmap_pars_fragment>",s).replace("#include <roughnessmap_fragment>",n).replace("#include <metalnessmap_fragment>",r).replace("#include <lights_physical_fragment>",o)},Object.defineProperties(this,{specular:{get:function(){return a.specular.value},set:function(e){a.specular.value=e}},specularMap:{get:function(){return a.specularMap.value},set:function(e){a.specularMap.value=e,e?this.defines.USE_SPECULARMAP="":delete this.defines.USE_SPECULARMAP}},glossiness:{get:function(){return a.glossiness.value},set:function(e){a.glossiness.value=e}},glossinessMap:{get:function(){return a.glossinessMap.value},set:function(e){a.glossinessMap.value=e,e?(this.defines.USE_GLOSSINESSMAP="",this.defines.USE_UV=""):(delete this.defines.USE_GLOSSINESSMAP,delete this.defines.USE_UV)}}}),delete this.metalness,delete this.roughness,delete this.metalnessMap,delete this.roughnessMap,this.setValues(e)}copy(e){return super.copy(e),this.specularMap=e.specularMap,this.specular.copy(e.specular),this.glossinessMap=e.glossinessMap,this.glossiness=e.glossiness,delete this.metalness,delete this.roughness,delete this.metalnessMap,delete this.roughnessMap,this}}class E{constructor(){this.name=t.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,this.specularGlossinessParams=["color","map","lightMap","lightMapIntensity","aoMap","aoMapIntensity","emissive","emissiveIntensity","emissiveMap","bumpMap","bumpScale","normalMap","normalMapType","displacementMap","displacementScale","displacementBias","specularMap","specular","glossinessMap","glossiness","alphaMap","envMap","envMapIntensity","refractionRatio"]}getMaterialType(){return f}extendParams(e,t,s){const n=t.extensions[this.name];e.color=new THREE.Color(1,1,1),e.opacity=1;const r=[];if(Array.isArray(n.diffuseFactor)){const t=n.diffuseFactor;e.color.fromArray(t),e.opacity=t[3]}if(void 0!==n.diffuseTexture&&r.push(s.assignTexture(e,"map",n.diffuseTexture)),e.emissive=new THREE.Color(0,0,0),e.glossiness=void 0!==n.glossinessFactor?n.glossinessFactor:1,e.specular=new THREE.Color(1,1,1),Array.isArray(n.specularFactor)&&e.specular.fromArray(n.specularFactor),void 0!==n.specularGlossinessTexture){const t=n.specularGlossinessTexture;r.push(s.assignTexture(e,"glossinessMap",t)),r.push(s.assignTexture(e,"specularMap",t))}return Promise.all(r)}createMaterial(e){const t=new f(e);return t.fog=!0,t.color=e.color,t.map=void 0===e.map?null:e.map,t.lightMap=null,t.lightMapIntensity=1,t.aoMap=void 0===e.aoMap?null:e.aoMap,t.aoMapIntensity=1,t.emissive=e.emissive,t.emissiveIntensity=1,t.emissiveMap=void 0===e.emissiveMap?null:e.emissiveMap,t.bumpMap=void 0===e.bumpMap?null:e.bumpMap,t.bumpScale=1,t.normalMap=void 0===e.normalMap?null:e.normalMap,t.normalMapType=THREE.TangentSpaceNormalMap,e.normalScale&&(t.normalScale=e.normalScale),t.displacementMap=null,t.displacementScale=1,t.displacementBias=0,t.specularMap=void 0===e.specularMap?null:e.specularMap,t.specular=e.specular,t.glossinessMap=void 0===e.glossinessMap?null:e.glossinessMap,t.glossiness=e.glossiness,t.alphaMap=null,t.envMap=void 0===e.envMap?null:e.envMap,t.envMapIntensity=1,t.refractionRatio=.98,t}}class g{constructor(){this.name=t.KHR_MESH_QUANTIZATION}}class T extends THREE.Interpolant{constructor(e,t,s,n){super(e,t,s,n)}copySampleValue_(e){const t=this.resultBuffer,s=this.sampleValues,n=this.valueSize,r=e*n*3+n;for(let e=0;e!==n;e++)t[e]=s[r+e];return t}}T.prototype.beforeStart_=T.prototype.copySampleValue_,T.prototype.afterEnd_=T.prototype.copySampleValue_,T.prototype.interpolate_=function(e,t,s,n){const r=this.resultBuffer,o=this.sampleValues,a=this.valueSize,i=2*a,l=3*a,c=n-t,u=(s-t)/c,h=u*u,p=h*u,d=e*l,m=d-l,f=-2*p+3*h,E=p-h,g=1-f,T=E-h+u;for(let e=0;e!==a;e++){const t=o[m+e+a],s=o[m+e+i]*c,n=o[d+e+a],l=o[d+e]*c;r[e]=g*t+T*s+f*n+E*l}return r};const R={FLOAT:5126,FLOAT_MAT3:35675,FLOAT_MAT4:35676,FLOAT_VEC2:35664,FLOAT_VEC3:35665,FLOAT_VEC4:35666,LINEAR:9729,REPEAT:10497,SAMPLER_2D:35678,POINTS:0,LINES:1,LINE_LOOP:2,LINE_STRIP:3,TRIANGLES:4,TRIANGLE_STRIP:5,TRIANGLE_FAN:6,UNSIGNED_BYTE:5121,UNSIGNED_SHORT:5123},x={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},M={9728:THREE.NearestFilter,9729:THREE.LinearFilter,9984:THREE.NearestMipmapNearestFilter,9985:THREE.LinearMipmapNearestFilter,9986:THREE.NearestMipmapLinearFilter,9987:THREE.LinearMipmapLinearFilter},v={33071:THREE.ClampToEdgeWrapping,33648:THREE.MirroredRepeatWrapping,10497:THREE.RepeatWrapping},S={SCALAR:1,VEC2:2,VEC3:3,VEC4:4,MAT2:4,MAT3:9,MAT4:16},A={POSITION:"position",NORMAL:"normal",TANGENT:"tangent",TEXCOORD_0:"uv",TEXCOORD_1:"uv2",COLOR_0:"color",WEIGHTS_0:"skinWeight",JOINTS_0:"skinIndex"},L={scale:"scale",translation:"position",rotation:"quaternion",weights:"morphTargetInfluences"},y={CUBICSPLINE:void 0,LINEAR:THREE.InterpolateLinear,STEP:THREE.InterpolateDiscrete},_={OPAQUE:"OPAQUE",MASK:"MASK",BLEND:"BLEND"};function H(e,t){return"string"!=typeof e||""===e?"":(/^https?:\/\//i.test(t)&&/^\//.test(e)&&(t=t.replace(/(^https?:\/\/[^\/]+).*/i,"$1")),/^(https?:)?\/\//i.test(e)?e:/^data:.*,.*$/i.test(e)?e:/^blob:.*$/i.test(e)?e:t+e)}function w(e,t,s){for(const n in s.extensions)void 0===e[n]&&(t.userData.gltfExtensions=t.userData.gltfExtensions||{},t.userData.gltfExtensions[n]=s.extensions[n])}function b(e,t){void 0!==t.extras&&("object"==typeof t.extras?Object.assign(e.userData,t.extras):console.warn("THREE.GLTFLoader: Ignoring primitive type .extras, "+t.extras))}function I(e,t){if(e.updateMorphTargets(),void 0!==t.weights)for(let s=0,n=t.weights.length;s<n;s++)e.morphTargetInfluences[s]=t.weights[s];if(t.extras&&Array.isArray(t.extras.targetNames)){const s=t.extras.targetNames;if(e.morphTargetInfluences.length===s.length){e.morphTargetDictionary={};for(let t=0,n=s.length;t<n;t++)e.morphTargetDictionary[s[t]]=t}else console.warn("THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.")}}function N(e){const s=e.extensions&&e.extensions[t.KHR_DRACO_MESH_COMPRESSION];let n;return n=s?"draco:"+s.bufferView+":"+s.indices+":"+P(s.attributes):e.indices+":"+P(e.attributes)+":"+e.mode}function P(e){let t="";const s=Object.keys(e).sort();for(let n=0,r=s.length;n<r;n++)t+=s[n]+":"+e[s[n]]+";";return t}function O(e){switch(e){case Int8Array:return 1/127;case Uint8Array:return 1/255;case Int16Array:return 1/32767;case Uint16Array:return 1/65535;default:throw new Error("THREE.GLTFLoader: Unsupported normalized accessor component type.")}}class C{constructor(t={},s={}){this.json=t,this.extensions={},this.plugins={},this.options=s,this.cache=new e,this.associations=new Map,this.primitiveCache={},this.meshCache={refs:{},uses:{}},this.cameraCache={refs:{},uses:{}},this.lightCache={refs:{},uses:{}},this.textureCache={},this.nodeNamesUsed={},"undefined"!=typeof createImageBitmap&&!1===/Firefox/.test(navigator.userAgent)?this.textureLoader=new THREE.ImageBitmapLoader(this.options.manager):this.textureLoader=new THREE.TextureLoader(this.options.manager),this.textureLoader.setCrossOrigin(this.options.crossOrigin),this.textureLoader.setRequestHeader(this.options.requestHeader),this.fileLoader=new THREE.FileLoader(this.options.manager),this.fileLoader.setResponseType("arraybuffer"),"use-credentials"===this.options.crossOrigin&&this.fileLoader.setWithCredentials(!0)}setExtensions(e){this.extensions=e}setPlugins(e){this.plugins=e}parse(e,t){const s=this,n=this.json,r=this.extensions;this.cache.removeAll(),this._invokeAll(function(e){return e._markDefs&&e._markDefs()}),Promise.all(this._invokeAll(function(e){return e.beforeRoot&&e.beforeRoot()})).then(function(){return Promise.all([s.getDependencies("scene"),s.getDependencies("animation"),s.getDependencies("camera")])}).then(function(t){const o={scene:t[0][n.scene||0],scenes:t[0],animations:t[1],cameras:t[2],asset:n.asset,parser:s,userData:{}};w(r,o,n),b(o,n),Promise.all(s._invokeAll(function(e){return e.afterRoot&&e.afterRoot(o)})).then(function(){e(o)})}).catch(t)}_markDefs(){const e=this.json.nodes||[],t=this.json.skins||[],s=this.json.meshes||[];for(let s=0,n=t.length;s<n;s++){const n=t[s].joints;for(let t=0,s=n.length;t<s;t++)e[n[t]].isBone=!0}for(let t=0,n=e.length;t<n;t++){const n=e[t];void 0!==n.mesh&&(this._addNodeRef(this.meshCache,n.mesh),void 0!==n.skin&&(s[n.mesh].isSkinnedMesh=!0)),void 0!==n.camera&&this._addNodeRef(this.cameraCache,n.camera)}}_addNodeRef(e,t){void 0!==t&&(void 0===e.refs[t]&&(e.refs[t]=e.uses[t]=0),e.refs[t]++)}_getNodeRef(e,t,s){if(e.refs[t]<=1)return s;const n=s.clone();return n.name+="_instance_"+e.uses[t]++,n}_invokeOne(e){const t=Object.values(this.plugins);t.push(this);for(let s=0;s<t.length;s++){const n=e(t[s]);if(n)return n}return null}_invokeAll(e){const t=Object.values(this.plugins);t.unshift(this);const s=[];for(let n=0;n<t.length;n++){const r=e(t[n]);r&&s.push(r)}return s}getDependency(e,t){const s=e+":"+t;let n=this.cache.get(s);if(!n){switch(e){case"scene":n=this.loadScene(t);break;case"node":n=this.loadNode(t);break;case"mesh":n=this._invokeOne(function(e){return e.loadMesh&&e.loadMesh(t)});break;case"accessor":n=this.loadAccessor(t);break;case"bufferView":n=this._invokeOne(function(e){return e.loadBufferView&&e.loadBufferView(t)});break;case"buffer":n=this.loadBuffer(t);break;case"material":n=this._invokeOne(function(e){return e.loadMaterial&&e.loadMaterial(t)});break;case"texture":n=this._invokeOne(function(e){return e.loadTexture&&e.loadTexture(t)});break;case"skin":n=this.loadSkin(t);break;case"animation":n=this.loadAnimation(t);break;case"camera":n=this.loadCamera(t);break;default:throw new Error("Unknown type: "+e)}this.cache.add(s,n)}return n}getDependencies(e){let t=this.cache.get(e);if(!t){const s=this,n=this.json[e+("mesh"===e?"es":"s")]||[];t=Promise.all(n.map(function(t,n){return s.getDependency(e,n)})),this.cache.add(e,t)}return t}loadBuffer(e){const s=this.json.buffers[e],n=this.fileLoader;if(s.type&&"arraybuffer"!==s.type)throw new Error("THREE.GLTFLoader: "+s.type+" buffer type is not supported.");if(void 0===s.uri&&0===e)return Promise.resolve(this.extensions[t.KHR_BINARY_GLTF].body);const r=this.options;return new Promise(function(e,t){n.load(H(s.uri,r.path),e,void 0,function(){t(new Error('THREE.GLTFLoader: Failed to load buffer "'+s.uri+'".'))})})}loadBufferView(e){const t=this.json.bufferViews[e];return this.getDependency("buffer",t.buffer).then(function(e){const s=t.byteLength||0,n=t.byteOffset||0;return e.slice(n,n+s)})}loadAccessor(e){const t=this,s=this.json,n=this.json.accessors[e];if(void 0===n.bufferView&&void 0===n.sparse)return Promise.resolve(null);const r=[];return void 0!==n.bufferView?r.push(this.getDependency("bufferView",n.bufferView)):r.push(null),void 0!==n.sparse&&(r.push(this.getDependency("bufferView",n.sparse.indices.bufferView)),r.push(this.getDependency("bufferView",n.sparse.values.bufferView))),Promise.all(r).then(function(e){const r=e[0],o=S[n.type],a=x[n.componentType],i=a.BYTES_PER_ELEMENT,l=i*o,c=n.byteOffset||0,u=void 0!==n.bufferView?s.bufferViews[n.bufferView].byteStride:void 0,h=!0===n.normalized;let p,d;if(u&&u!==l){const e=Math.floor(c/u),s="InterleavedBuffer:"+n.bufferView+":"+n.componentType+":"+e+":"+n.count;let l=t.cache.get(s);l||(p=new a(r,e*u,n.count*u/i),l=new THREE.InterleavedBuffer(p,u/i),t.cache.add(s,l)),d=new THREE.InterleavedBufferAttribute(l,o,c%u/i,h)}else p=null===r?new a(n.count*o):new a(r,c,n.count*o),d=new THREE.BufferAttribute(p,o,h);if(void 0!==n.sparse){const t=S.SCALAR,s=x[n.sparse.indices.componentType],i=n.sparse.indices.byteOffset||0,l=n.sparse.values.byteOffset||0,c=new s(e[1],i,n.sparse.count*t),u=new a(e[2],l,n.sparse.count*o);null!==r&&(d=new THREE.BufferAttribute(d.array.slice(),d.itemSize,d.normalized));for(let e=0,t=c.length;e<t;e++){const t=c[e];if(d.setX(t,u[e*o]),o>=2&&d.setY(t,u[e*o+1]),o>=3&&d.setZ(t,u[e*o+2]),o>=4&&d.setW(t,u[e*o+3]),o>=5)throw new Error("THREE.GLTFLoader: Unsupported itemSize in sparse THREE.BufferAttribute.")}}return d})}loadTexture(e){const t=this.json,s=this.options,n=t.textures[e],r=t.images[n.source];let o=this.textureLoader;if(r.uri){const e=s.manager.getHandler(r.uri);null!==e&&(o=e)}return this.loadTextureImage(e,r,o)}loadTextureImage(e,t,s){const n=this,r=this.json,o=this.options,a=r.textures[e],i=(t.uri||t.bufferView)+":"+a.sampler;if(this.textureCache[i])return this.textureCache[i];const l=self.URL||self.webkitURL;let c=t.uri||"",u=!1,h=!0;const p=c.search(/\.jpe?g($|\?)/i)>0||0===c.search(/^data\:image\/jpeg/);if(("image/jpeg"===t.mimeType||p)&&(h=!1),void 0!==t.bufferView)c=n.getDependency("bufferView",t.bufferView).then(function(e){if("image/png"===t.mimeType){const t=new DataView(e,25,1).getUint8(0,!1);h=6===t||4===t||3===t}u=!0;const s=new Blob([e],{type:t.mimeType});return c=l.createObjectURL(s)});else if(void 0===t.uri)throw new Error("THREE.GLTFLoader: Image "+e+" is missing URI and bufferView");const d=Promise.resolve(c).then(function(e){return new Promise(function(t,n){let r=t;!0===s.isImageBitmapLoader&&(r=function(e){const s=new THREE.Texture(e);s.needsUpdate=!0,t(s)}),s.load(H(e,o.path),r,void 0,n)})}).then(function(t){!0===u&&l.revokeObjectURL(c),t.flipY=!1,a.name&&(t.name=a.name),h||(t.format=THREE.RGBFormat);const s=(r.samplers||{})[a.sampler]||{};return t.magFilter=M[s.magFilter]||THREE.LinearFilter,t.minFilter=M[s.minFilter]||THREE.LinearMipmapLinearFilter,t.wrapS=v[s.wrapS]||THREE.RepeatWrapping,t.wrapT=v[s.wrapT]||THREE.RepeatWrapping,n.associations.set(t,{type:"textures",index:e}),t}).catch(function(){return console.error("THREE.GLTFLoader: Couldn't load texture",c),null});return this.textureCache[i]=d,d}assignTexture(e,s,n){const r=this;return this.getDependency("texture",n.index).then(function(o){if(void 0===n.texCoord||0==n.texCoord||"aoMap"===s&&1==n.texCoord||console.warn("THREE.GLTFLoader: Custom UV set "+n.texCoord+" for texture "+s+" not yet supported."),r.extensions[t.KHR_TEXTURE_TRANSFORM]){const e=void 0!==n.extensions?n.extensions[t.KHR_TEXTURE_TRANSFORM]:void 0;if(e){const s=r.associations.get(o);o=r.extensions[t.KHR_TEXTURE_TRANSFORM].extendTexture(o,e),r.associations.set(o,s)}}e[s]=o})}assignFinalMaterial(e){const t=e.geometry;let s=e.material;const n=void 0!==t.attributes.tangent,r=void 0!==t.attributes.color,o=void 0===t.attributes.normal,a=Object.keys(t.morphAttributes).length>0,i=a&&void 0!==t.morphAttributes.normal;if(e.isPoints){const e="PointsMaterial:"+s.uuid;let t=this.cache.get(e);t||(t=new THREE.PointsMaterial,THREE.Material.prototype.copy.call(t,s),t.color.copy(s.color),t.map=s.map,t.sizeAttenuation=!1,this.cache.add(e,t)),s=t}else if(e.isLine){const e="LineBasicMaterial:"+s.uuid;let t=this.cache.get(e);t||(t=new THREE.LineBasicMaterial,THREE.Material.prototype.copy.call(t,s),t.color.copy(s.color),this.cache.add(e,t)),s=t}if(n||r||o||a){let e="ClonedMaterial:"+s.uuid+":";s.isGLTFSpecularGlossinessMaterial&&(e+="specular-glossiness:"),n&&(e+="vertex-tangents:"),r&&(e+="vertex-colors:"),o&&(e+="flat-shading:"),a&&(e+="morph-targets:"),i&&(e+="morph-normals:");let t=this.cache.get(e);t||(t=s.clone(),r&&(t.vertexColors=!0),o&&(t.flatShading=!0),a&&(t.morphTargets=!0),i&&(t.morphNormals=!0),n&&(t.vertexTangents=!0,t.normalScale&&(t.normalScale.y*=-1),t.clearcoatNormalScale&&(t.clearcoatNormalScale.y*=-1)),this.cache.add(e,t),this.associations.set(t,this.associations.get(s))),s=t}s.aoMap&&void 0===t.attributes.uv2&&void 0!==t.attributes.uv&&t.setAttribute("uv2",t.attributes.uv),e.material=s}getMaterialType(){return THREE.MeshStandardMaterial}loadMaterial(e){const s=this,n=this.json,r=this.extensions,o=n.materials[e];let a;const i={},l=o.extensions||{},c=[];if(l[t.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS]){const e=r[t.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS];a=e.getMaterialType(),c.push(e.extendParams(i,o,s))}else if(l[t.KHR_MATERIALS_UNLIT]){const e=r[t.KHR_MATERIALS_UNLIT];a=e.getMaterialType(),c.push(e.extendParams(i,o,s))}else{const t=o.pbrMetallicRoughness||{};if(i.color=new THREE.Color(1,1,1),i.opacity=1,Array.isArray(t.baseColorFactor)){const e=t.baseColorFactor;i.color.fromArray(e),i.opacity=e[3]}void 0!==t.baseColorTexture&&c.push(s.assignTexture(i,"map",t.baseColorTexture)),i.metalness=void 0!==t.metallicFactor?t.metallicFactor:1,i.roughness=void 0!==t.roughnessFactor?t.roughnessFactor:1,void 0!==t.metallicRoughnessTexture&&(c.push(s.assignTexture(i,"metalnessMap",t.metallicRoughnessTexture)),c.push(s.assignTexture(i,"roughnessMap",t.metallicRoughnessTexture))),a=this._invokeOne(function(t){return t.getMaterialType&&t.getMaterialType(e)}),c.push(Promise.all(this._invokeAll(function(t){return t.extendMaterialParams&&t.extendMaterialParams(e,i)})))}!0===o.doubleSided&&(i.side=THREE.DoubleSide);const u=o.alphaMode||_.OPAQUE;return u===_.BLEND?(i.transparent=!0,i.depthWrite=!1):(i.transparent=!1,u===_.MASK&&(i.alphaTest=void 0!==o.alphaCutoff?o.alphaCutoff:.5)),void 0!==o.normalTexture&&a!==THREE.MeshBasicMaterial&&(c.push(s.assignTexture(i,"normalMap",o.normalTexture)),i.normalScale=new THREE.Vector2(1,-1),void 0!==o.normalTexture.scale&&i.normalScale.set(o.normalTexture.scale,-o.normalTexture.scale)),void 0!==o.occlusionTexture&&a!==THREE.MeshBasicMaterial&&(c.push(s.assignTexture(i,"aoMap",o.occlusionTexture)),void 0!==o.occlusionTexture.strength&&(i.aoMapIntensity=o.occlusionTexture.strength)),void 0!==o.emissiveFactor&&a!==THREE.MeshBasicMaterial&&(i.emissive=(new THREE.Color).fromArray(o.emissiveFactor)),void 0!==o.emissiveTexture&&a!==THREE.MeshBasicMaterial&&c.push(s.assignTexture(i,"emissiveMap",o.emissiveTexture)),Promise.all(c).then(function(){let n;return n=a===f?r[t.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].createMaterial(i):new a(i),o.name&&(n.name=o.name),n.map&&(n.map.encoding=THREE.sRGBEncoding),n.emissiveMap&&(n.emissiveMap.encoding=THREE.sRGBEncoding),b(n,o),s.associations.set(n,{type:"materials",index:e}),o.extensions&&w(r,n,o),n})}createUniqueName(e){const t=THREE.PropertyBinding.sanitizeNodeName(e||"");let s=t;for(let e=1;this.nodeNamesUsed[s];++e)s=t+"_"+e;return this.nodeNamesUsed[s]=!0,s}loadGeometries(e){const s=this,n=this.extensions,r=this.primitiveCache;function o(e){return n[t.KHR_DRACO_MESH_COMPRESSION].decodePrimitive(e,s).then(function(t){return U(t,e,s)})}const a=[];for(let n=0,i=e.length;n<i;n++){const i=e[n],l=N(i),c=r[l];if(c)a.push(c.promise);else{let e;e=i.extensions&&i.extensions[t.KHR_DRACO_MESH_COMPRESSION]?o(i):U(new THREE.BufferGeometry,i,s),r[l]={primitive:i,promise:e},a.push(e)}}return Promise.all(a)}loadMesh(e){const t=this,s=this.json,n=this.extensions,r=s.meshes[e],o=r.primitives,a=[];for(let e=0,t=o.length;e<t;e++){const t=void 0===o[e].material?(void 0===(i=this.cache).DefaultMaterial&&(i.DefaultMaterial=new THREE.MeshStandardMaterial({color:16777215,emissive:0,metalness:1,roughness:1,transparent:!1,depthTest:!0,side:THREE.FrontSide})),i.DefaultMaterial):this.getDependency("material",o[e].material);a.push(t)}var i;return a.push(t.loadGeometries(o)),Promise.all(a).then(function(s){const a=s.slice(0,s.length-1),i=s[s.length-1],l=[];for(let s=0,c=i.length;s<c;s++){const c=i[s],u=o[s];let h;const p=a[s];if(u.mode===R.TRIANGLES||u.mode===R.TRIANGLE_STRIP||u.mode===R.TRIANGLE_FAN||void 0===u.mode)!0!==(h=!0===r.isSkinnedMesh?new THREE.SkinnedMesh(c,p):new THREE.Mesh(c,p)).isSkinnedMesh||h.geometry.attributes.skinWeight.normalized||h.normalizeSkinWeights(),u.mode===R.TRIANGLE_STRIP?h.geometry=D(h.geometry,THREE.TriangleStripDrawMode):u.mode===R.TRIANGLE_FAN&&(h.geometry=D(h.geometry,THREE.TriangleFanDrawMode));else if(u.mode===R.LINES)h=new THREE.LineSegments(c,p);else if(u.mode===R.LINE_STRIP)h=new THREE.Line(c,p);else if(u.mode===R.LINE_LOOP)h=new THREE.LineLoop(c,p);else{if(u.mode!==R.POINTS)throw new Error("THREE.GLTFLoader: Primitive mode unsupported: "+u.mode);h=new THREE.Points(c,p)}Object.keys(h.geometry.morphAttributes).length>0&&I(h,r),h.name=t.createUniqueName(r.name||"mesh_"+e),b(h,r),u.extensions&&w(n,h,u),t.assignFinalMaterial(h),l.push(h)}if(1===l.length)return l[0];const c=new THREE.Group;for(let e=0,t=l.length;e<t;e++)c.add(l[e]);return c})}loadCamera(e){let t;const s=this.json.cameras[e],n=s[s.type];if(n)return"perspective"===s.type?t=new THREE.PerspectiveCamera(THREE.MathUtils.radToDeg(n.yfov),n.aspectRatio||1,n.znear||1,n.zfar||2e6):"orthographic"===s.type&&(t=new THREE.OrthographicCamera(-n.xmag,n.xmag,n.ymag,-n.ymag,n.znear,n.zfar)),s.name&&(t.name=this.createUniqueName(s.name)),b(t,s),Promise.resolve(t);console.warn("THREE.GLTFLoader: Missing camera parameters.")}loadSkin(e){const t=this.json.skins[e],s={joints:t.joints};return void 0===t.inverseBindMatrices?Promise.resolve(s):this.getDependency("accessor",t.inverseBindMatrices).then(function(e){return s.inverseBindMatrices=e,s})}loadAnimation(e){const t=this.json.animations[e],s=[],n=[],r=[],o=[],a=[];for(let e=0,i=t.channels.length;e<i;e++){const i=t.channels[e],l=t.samplers[i.sampler],c=i.target,u=void 0!==c.node?c.node:c.id,h=void 0!==t.parameters?t.parameters[l.input]:l.input,p=void 0!==t.parameters?t.parameters[l.output]:l.output;s.push(this.getDependency("node",u)),n.push(this.getDependency("accessor",h)),r.push(this.getDependency("accessor",p)),o.push(l),a.push(c)}return Promise.all([Promise.all(s),Promise.all(n),Promise.all(r),Promise.all(o),Promise.all(a)]).then(function(s){const n=s[0],r=s[1],o=s[2],a=s[3],i=s[4],l=[];for(let e=0,t=n.length;e<t;e++){const t=n[e],s=r[e],c=o[e],u=a[e],h=i[e];if(void 0===t)continue;let p;switch(t.updateMatrix(),t.matrixAutoUpdate=!0,L[h.path]){case L.weights:p=THREE.NumberKeyframeTrack;break;case L.rotation:p=THREE.QuaternionKeyframeTrack;break;case L.position:case L.scale:default:p=THREE.VectorKeyframeTrack}const d=t.name?t.name:t.uuid,m=void 0!==u.interpolation?y[u.interpolation]:THREE.InterpolateLinear,f=[];L[h.path]===L.weights?t.traverse(function(e){!0===e.isMesh&&e.morphTargetInfluences&&f.push(e.name?e.name:e.uuid)}):f.push(d);let E=c.array;if(c.normalized){const e=O(E.constructor),t=new Float32Array(E.length);for(let s=0,n=E.length;s<n;s++)t[s]=E[s]*e;E=t}for(let e=0,t=f.length;e<t;e++){const t=new p(f[e]+"."+L[h.path],s.array,E,m);"CUBICSPLINE"===u.interpolation&&(t.createInterpolant=function(e){return new T(this.times,this.values,this.getValueSize()/3,e)},t.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline=!0),l.push(t)}}const c=t.name?t.name:"animation_"+e;return new THREE.AnimationClip(c,void 0,l)})}createNodeMesh(e){const t=this.json,s=this,n=t.nodes[e];return void 0===n.mesh?null:s.getDependency("mesh",n.mesh).then(function(e){const t=s._getNodeRef(s.meshCache,n.mesh,e);return void 0!==n.weights&&t.traverse(function(e){if(e.isMesh)for(let t=0,s=n.weights.length;t<s;t++)e.morphTargetInfluences[t]=n.weights[t]}),t})}loadNode(e){const t=this.json,s=this.extensions,n=this,r=t.nodes[e],o=r.name?n.createUniqueName(r.name):"";return function(){const t=[],s=n._invokeOne(function(t){return t.createNodeMesh&&t.createNodeMesh(e)});return s&&t.push(s),void 0!==r.camera&&t.push(n.getDependency("camera",r.camera).then(function(e){return n._getNodeRef(n.cameraCache,r.camera,e)})),n._invokeAll(function(t){return t.createNodeAttachment&&t.createNodeAttachment(e)}).forEach(function(e){t.push(e)}),Promise.all(t)}().then(function(t){let a;if((a=!0===r.isBone?new THREE.Bone:t.length>1?new THREE.Group:1===t.length?t[0]:new THREE.Object3D)!==t[0])for(let e=0,s=t.length;e<s;e++)a.add(t[e]);if(r.name&&(a.userData.name=r.name,a.name=o),b(a,r),r.extensions&&w(s,a,r),void 0!==r.matrix){const e=new THREE.Matrix4;e.fromArray(r.matrix),a.applyMatrix4(e)}else void 0!==r.translation&&a.position.fromArray(r.translation),void 0!==r.rotation&&a.quaternion.fromArray(r.rotation),void 0!==r.scale&&a.scale.fromArray(r.scale);return n.associations.set(a,{type:"nodes",index:e}),a})}loadScene(e){const t=this.json,s=this.extensions,n=this.json.scenes[e],r=this,o=new THREE.Group;n.name&&(o.name=r.createUniqueName(n.name)),b(o,n),n.extensions&&w(s,o,n);const a=n.nodes||[],i=[];for(let e=0,s=a.length;e<s;e++)i.push(F(a[e],o,t,r));return Promise.all(i).then(function(){return o})}}function F(e,t,s,n){const r=s.nodes[e];return n.getDependency("node",e).then(function(e){if(void 0===r.skin)return e;let t;return n.getDependency("skin",r.skin).then(function(e){const s=[];for(let r=0,o=(t=e).joints.length;r<o;r++)s.push(n.getDependency("node",t.joints[r]));return Promise.all(s)}).then(function(s){return e.traverse(function(e){if(!e.isMesh)return;const n=[],r=[];for(let e=0,o=s.length;e<o;e++){const o=s[e];if(o){n.push(o);const s=new THREE.Matrix4;void 0!==t.inverseBindMatrices&&s.fromArray(t.inverseBindMatrices.array,16*e),r.push(s)}else console.warn('THREE.GLTFLoader: Joint "%s" could not be found.',t.joints[e])}e.bind(new THREE.Skeleton(n,r),e.matrixWorld)}),e})}).then(function(e){t.add(e);const o=[];if(r.children){const t=r.children;for(let r=0,a=t.length;r<a;r++){const a=t[r];o.push(F(a,e,s,n))}}return Promise.all(o)})}function U(e,t,s){const n=t.attributes,r=[];function o(t,n){return s.getDependency("accessor",t).then(function(t){e.setAttribute(n,t)})}for(const t in n){const s=A[t]||t.toLowerCase();s in e.attributes||r.push(o(n[t],s))}if(void 0!==t.indices&&!e.index){const n=s.getDependency("accessor",t.indices).then(function(t){e.setIndex(t)});r.push(n)}return b(e,t),function(e,t,s){const n=t.attributes,r=new THREE.Box3;if(void 0===n.POSITION)return;{const e=s.json.accessors[n.POSITION],t=e.min,o=e.max;if(void 0===t||void 0===o)return void console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.");if(r.set(new THREE.Vector3(t[0],t[1],t[2]),new THREE.Vector3(o[0],o[1],o[2])),e.normalized){const t=O(x[e.componentType]);r.min.multiplyScalar(t),r.max.multiplyScalar(t)}}const o=t.targets;if(void 0!==o){const e=new THREE.Vector3,t=new THREE.Vector3;for(let n=0,r=o.length;n<r;n++){const r=o[n];if(void 0!==r.POSITION){const n=s.json.accessors[r.POSITION],o=n.min,a=n.max;if(void 0!==o&&void 0!==a){if(t.setX(Math.max(Math.abs(o[0]),Math.abs(a[0]))),t.setY(Math.max(Math.abs(o[1]),Math.abs(a[1]))),t.setZ(Math.max(Math.abs(o[2]),Math.abs(a[2]))),n.normalized){const e=O(x[n.componentType]);t.multiplyScalar(e)}e.max(t)}else console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.")}}r.expandByVector(e)}e.boundingBox=r;const a=new THREE.Sphere;r.getCenter(a.center),a.radius=r.min.distanceTo(r.max)/2,e.boundingSphere=a}(e,t,s),Promise.all(r).then(function(){return void 0!==t.targets?function(e,t,s){let n=!1,r=!1;for(let e=0,s=t.length;e<s;e++){const s=t[e];if(void 0!==s.POSITION&&(n=!0),void 0!==s.NORMAL&&(r=!0),n&&r)break}if(!n&&!r)return Promise.resolve(e);const o=[],a=[];for(let i=0,l=t.length;i<l;i++){const l=t[i];if(n){const t=void 0!==l.POSITION?s.getDependency("accessor",l.POSITION):e.attributes.position;o.push(t)}if(r){const t=void 0!==l.NORMAL?s.getDependency("accessor",l.NORMAL):e.attributes.normal;a.push(t)}}return Promise.all([Promise.all(o),Promise.all(a)]).then(function(t){const s=t[0],o=t[1];return n&&(e.morphAttributes.position=s),r&&(e.morphAttributes.normal=o),e.morphTargetsRelative=!0,e})}(e,t.targets,s):e})}function D(e,t){let s=e.getIndex();if(null===s){const t=[],n=e.getAttribute("position");if(void 0===n)return console.error("THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible."),e;for(let e=0;e<n.count;e++)t.push(e);e.setIndex(t),s=e.getIndex()}const n=s.count-2,r=[];if(t===THREE.TriangleFanDrawMode)for(let e=1;e<=n;e++)r.push(s.getX(0)),r.push(s.getX(e)),r.push(s.getX(e+1));else for(let e=0;e<n;e++)e%2==0?(r.push(s.getX(e)),r.push(s.getX(e+1)),r.push(s.getX(e+2))):(r.push(s.getX(e+2)),r.push(s.getX(e+1)),r.push(s.getX(e)));r.length/3!==n&&console.error("THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.");const o=e.clone();return o.setIndex(r),o}THREE.GLTFLoader=class extends THREE.Loader{constructor(e){super(e),this.dracoLoader=null,this.ktx2Loader=null,this.meshoptDecoder=null,this.pluginCallbacks=[],this.register(function(e){return new r(e)}),this.register(function(e){return new a(e)}),this.register(function(e){return new i(e)}),this.register(function(e){return new o(e)}),this.register(function(e){return new s(e)}),this.register(function(e){return new l(e)})}load(e,t,s,n){const r=this;let o;o=""!==this.resourcePath?this.resourcePath:""!==this.path?this.path:THREE.LoaderUtils.extractUrlBase(e),this.manager.itemStart(e);const a=function(t){n?n(t):console.error(t),r.manager.itemError(e),r.manager.itemEnd(e)},i=new THREE.FileLoader(this.manager);i.setPath(this.path),i.setResponseType("arraybuffer"),i.setRequestHeader(this.requestHeader),i.setWithCredentials(this.withCredentials),i.load(e,function(s){try{r.parse(s,o,function(s){t(s),r.manager.itemEnd(e)},a)}catch(e){a(e)}},s,a)}setDRACOLoader(e){return this.dracoLoader=e,this}setDDSLoader(){throw new Error('THREE.GLTFLoader: "MSFT_texture_dds" no longer supported. Please update to "KHR_texture_basisu".')}setKTX2Loader(e){return this.ktx2Loader=e,this}setMeshoptDecoder(e){return this.meshoptDecoder=e,this}register(e){return-1===this.pluginCallbacks.indexOf(e)&&this.pluginCallbacks.push(e),this}unregister(e){return-1!==this.pluginCallbacks.indexOf(e)&&this.pluginCallbacks.splice(this.pluginCallbacks.indexOf(e),1),this}parse(e,s,r,o){let a;const i={},l={};if("string"==typeof e)a=e;else if(THREE.LoaderUtils.decodeText(new Uint8Array(e,0,4))===c){try{i[t.KHR_BINARY_GLTF]=new p(e)}catch(e){return void(o&&o(e))}a=i[t.KHR_BINARY_GLTF].content}else a=THREE.LoaderUtils.decodeText(new Uint8Array(e));const u=JSON.parse(a);if(void 0===u.asset||u.asset.version[0]<2)return void(o&&o(new Error("THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.")));const h=new C(u,{path:s||this.resourcePath||"",crossOrigin:this.crossOrigin,requestHeader:this.requestHeader,manager:this.manager,ktx2Loader:this.ktx2Loader,meshoptDecoder:this.meshoptDecoder});h.fileLoader.setRequestHeader(this.requestHeader);for(let e=0;e<this.pluginCallbacks.length;e++){const t=this.pluginCallbacks[e](h);l[t.name]=t,i[t.name]=!0}if(u.extensionsUsed)for(let e=0;e<u.extensionsUsed.length;++e){const s=u.extensionsUsed[e],r=u.extensionsRequired||[];switch(s){case t.KHR_MATERIALS_UNLIT:i[s]=new n;break;case t.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:i[s]=new E;break;case t.KHR_DRACO_MESH_COMPRESSION:i[s]=new d(u,this.dracoLoader);break;case t.KHR_TEXTURE_TRANSFORM:i[s]=new m;break;case t.KHR_MESH_QUANTIZATION:i[s]=new g;break;default:r.indexOf(s)>=0&&void 0===l[s]&&console.warn('THREE.GLTFLoader: Unknown extension "'+s+'".')}}h.setExtensions(i),h.setPlugins(l),h.parse(r,o)}}}();});
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