THREE.GLTFLoader=function(){function e(e){THREE.Loader.call(this,e),this.dracoLoader=null,this.ddsLoader=null}function t(){var e={};return{get:function(t){return e[t]},add:function(t,r){e[t]=r},remove:function(t){delete e[t]},removeAll:function(){e={}}}}e.prototype=Object.assign(Object.create(THREE.Loader.prototype),{constructor:e,load:function(e,t,r,a){var s,n=this;s=""!==this.resourcePath?this.resourcePath:""!==this.path?this.path:THREE.LoaderUtils.extractUrlBase(e),n.manager.itemStart(e);var o=function(t){a?a(t):console.error(t),n.manager.itemError(e),n.manager.itemEnd(e)},i=new THREE.FileLoader(n.manager);i.setPath(this.path),i.setResponseType("arraybuffer"),"use-credentials"===n.crossOrigin&&i.setWithCredentials(!0),i.load(e,(function(r){try{n.parse(r,s,(function(r){t(r),n.manager.itemEnd(e)}),o)}catch(e){o(e)}}),r,o)},setDRACOLoader:function(e){return this.dracoLoader=e,this},setDDSLoader:function(e){return this.ddsLoader=e,this},parse:function(e,t,p,m){var f,E={};if("string"==typeof e)f=e;else if(THREE.LoaderUtils.decodeText(new Uint8Array(e,0,4))===i){try{E[r.KHR_BINARY_GLTF]=new l(e)}catch(e){return void(m&&m(e))}f=E[r.KHR_BINARY_GLTF].content}else f=THREE.LoaderUtils.decodeText(new Uint8Array(e));var T=JSON.parse(f);if(void 0===T.asset||T.asset.version[0]<2)m&&m(new Error("THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported."));else{if(T.extensionsUsed)for(var g=0;g<T.extensionsUsed.length;++g){var v=T.extensionsUsed[g],R=T.extensionsRequired||[];switch(v){case r.KHR_LIGHTS_PUNCTUAL:E[v]=new s(T);break;case r.KHR_MATERIALS_CLEARCOAT:E[v]=new o;break;case r.KHR_MATERIALS_UNLIT:E[v]=new n;break;case r.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:E[v]=new h;break;case r.KHR_DRACO_MESH_COMPRESSION:E[v]=new c(T,this.dracoLoader);break;case r.MSFT_TEXTURE_DDS:E[v]=new a(this.ddsLoader);break;case r.KHR_TEXTURE_TRANSFORM:E[v]=new u;break;case r.KHR_MESH_QUANTIZATION:E[v]=new d;break;default:R.indexOf(v)>=0&&console.warn('THREE.GLTFLoader: Unknown extension "'+v+'".')}}new _(T,E,{path:t||this.resourcePath||"",crossOrigin:this.crossOrigin,manager:this.manager}).parse(p,m)}}});var r={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_UNLIT:"KHR_materials_unlit",KHR_TEXTURE_TRANSFORM:"KHR_texture_transform",KHR_MESH_QUANTIZATION:"KHR_mesh_quantization",MSFT_TEXTURE_DDS:"MSFT_texture_dds"};function a(e){if(!e)throw new Error("THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader");this.name=r.MSFT_TEXTURE_DDS,this.ddsLoader=e}function s(e){this.name=r.KHR_LIGHTS_PUNCTUAL;var t=e.extensions&&e.extensions[r.KHR_LIGHTS_PUNCTUAL]||{};this.lightDefs=t.lights||[]}function n(){this.name=r.KHR_MATERIALS_UNLIT}function o(){this.name=r.KHR_MATERIALS_CLEARCOAT}s.prototype.loadLight=function(e){var t,r=this.lightDefs[e],a=new THREE.Color(16777215);void 0!==r.color&&a.fromArray(r.color);var s=void 0!==r.range?r.range:0;switch(r.type){case"directional":(t=new THREE.DirectionalLight(a)).target.position.set(0,0,-1),t.add(t.target);break;case"point":(t=new THREE.PointLight(a)).distance=s;break;case"spot":(t=new THREE.SpotLight(a)).distance=s,r.spot=r.spot||{},r.spot.innerConeAngle=void 0!==r.spot.innerConeAngle?r.spot.innerConeAngle:0,r.spot.outerConeAngle=void 0!==r.spot.outerConeAngle?r.spot.outerConeAngle:Math.PI/4,t.angle=r.spot.outerConeAngle,t.penumbra=1-r.spot.innerConeAngle/r.spot.outerConeAngle,t.target.position.set(0,0,-1),t.add(t.target);break;default:throw new Error('THREE.GLTFLoader: Unexpected light type, "'+r.type+'".')}return t.position.set(0,0,0),t.decay=2,void 0!==r.intensity&&(t.intensity=r.intensity),t.name=r.name||"light_"+e,Promise.resolve(t)},n.prototype.getMaterialType=function(){return THREE.MeshBasicMaterial},n.prototype.extendParams=function(e,t,r){var a=[];e.color=new THREE.Color(1,1,1),e.opacity=1;var s=t.pbrMetallicRoughness;if(s){if(Array.isArray(s.baseColorFactor)){var n=s.baseColorFactor;e.color.fromArray(n),e.opacity=n[3]}void 0!==s.baseColorTexture&&a.push(r.assignTexture(e,"map",s.baseColorTexture))}return Promise.all(a)},o.prototype.getMaterialType=function(){return THREE.MeshPhysicalMaterial},o.prototype.extendParams=function(e,t,r){var a=[],s=t.extensions[this.name];if(void 0!==s.clearcoatFactor&&(e.clearcoat=s.clearcoatFactor),void 0!==s.clearcoatTexture&&a.push(r.assignTexture(e,"clearcoatMap",s.clearcoatTexture)),void 0!==s.clearcoatRoughnessFactor&&(e.clearcoatRoughness=s.clearcoatRoughnessFactor),void 0!==s.clearcoatRoughnessTexture&&a.push(r.assignTexture(e,"clearcoatRoughnessMap",s.clearcoatRoughnessTexture)),void 0!==s.clearcoatNormalTexture&&(a.push(r.assignTexture(e,"clearcoatNormalMap",s.clearcoatNormalTexture)),void 0!==s.clearcoatNormalTexture.scale)){var n=s.clearcoatNormalTexture.scale;e.clearcoatNormalScale=new THREE.Vector2(n,n)}return Promise.all(a)};var i="glTF";function l(e){this.name=r.KHR_BINARY_GLTF,this.content=null,this.body=null;var t=new DataView(e,0,12);if(this.header={magic:THREE.LoaderUtils.decodeText(new Uint8Array(e.slice(0,4))),version:t.getUint32(4,!0),length:t.getUint32(8,!0)},this.header.magic!==i)throw new Error("THREE.GLTFLoader: Unsupported glTF-Binary header.");if(this.header.version<2)throw new Error("THREE.GLTFLoader: Legacy binary file detected.");for(var a=new DataView(e,12),s=0;s<a.byteLength;){var n=a.getUint32(s,!0);s+=4;var o=a.getUint32(s,!0);if(s+=4,1313821514===o){var l=new Uint8Array(e,12+s,n);this.content=THREE.LoaderUtils.decodeText(l)}else if(5130562===o){var c=12+s;this.body=e.slice(c,c+n)}s+=n}if(null===this.content)throw new Error("THREE.GLTFLoader: JSON content not found.")}function c(e,t){if(!t)throw new Error("THREE.GLTFLoader: No DRACOLoader instance provided.");this.name=r.KHR_DRACO_MESH_COMPRESSION,this.json=e,this.dracoLoader=t,this.dracoLoader.preload()}function u(){this.name=r.KHR_TEXTURE_TRANSFORM}function p(e){THREE.MeshStandardMaterial.call(this),this.isGLTFSpecularGlossinessMaterial=!0;var t=["#ifdef USE_SPECULARMAP","\tuniform sampler2D specularMap;","#endif"].join("\n"),r=["#ifdef USE_GLOSSINESSMAP","\tuniform sampler2D glossinessMap;","#endif"].join("\n"),a=["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"),s=["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"),n=["PhysicalMaterial material;","material.diffuseColor = diffuseColor.rgb;","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.rgb;"].join("\n"),o={specular:{value:(new THREE.Color).setHex(16777215)},glossiness:{value:1},specularMap:{value:null},glossinessMap:{value:null}};this._extraUniforms=o,this.onBeforeCompile=function(e){for(var i in o)e.uniforms[i]=o[i];e.fragmentShader=e.fragmentShader.replace("uniform float roughness;","uniform vec3 specular;"),e.fragmentShader=e.fragmentShader.replace("uniform float metalness;","uniform float glossiness;"),e.fragmentShader=e.fragmentShader.replace("#include <roughnessmap_pars_fragment>",t),e.fragmentShader=e.fragmentShader.replace("#include <metalnessmap_pars_fragment>",r),e.fragmentShader=e.fragmentShader.replace("#include <roughnessmap_fragment>",a),e.fragmentShader=e.fragmentShader.replace("#include <metalnessmap_fragment>",s),e.fragmentShader=e.fragmentShader.replace("#include <lights_physical_fragment>",n)},Object.defineProperties(this,{specular:{get:function(){return o.specular.value},set:function(e){o.specular.value=e}},specularMap:{get:function(){return o.specularMap.value},set:function(e){o.specularMap.value=e}},glossiness:{get:function(){return o.glossiness.value},set:function(e){o.glossiness.value=e}},glossinessMap:{get:function(){return o.glossinessMap.value},set:function(e){o.glossinessMap.value=e,e?(this.defines.USE_GLOSSINESSMAP="",this.defines.USE_ROUGHNESSMAP=""):(delete this.defines.USE_ROUGHNESSMAP,delete this.defines.USE_GLOSSINESSMAP)}}}),delete this.metalness,delete this.roughness,delete this.metalnessMap,delete this.roughnessMap,this.setValues(e)}function h(){return{name:r.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,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:function(){return p},extendParams:function(e,t,r){var a=t.extensions[this.name];e.color=new THREE.Color(1,1,1),e.opacity=1;var s=[];if(Array.isArray(a.diffuseFactor)){var n=a.diffuseFactor;e.color.fromArray(n),e.opacity=n[3]}if(void 0!==a.diffuseTexture&&s.push(r.assignTexture(e,"map",a.diffuseTexture)),e.emissive=new THREE.Color(0,0,0),e.glossiness=void 0!==a.glossinessFactor?a.glossinessFactor:1,e.specular=new THREE.Color(1,1,1),Array.isArray(a.specularFactor)&&e.specular.fromArray(a.specularFactor),void 0!==a.specularGlossinessTexture){var o=a.specularGlossinessTexture;s.push(r.assignTexture(e,"glossinessMap",o)),s.push(r.assignTexture(e,"specularMap",o))}return Promise.all(s)},createMaterial:function(e){var t=new p(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}}}function d(){this.name=r.KHR_MESH_QUANTIZATION}function m(e,t,r,a){THREE.Interpolant.call(this,e,t,r,a)}c.prototype.decodePrimitive=function(e,t){var r=this.json,a=this.dracoLoader,s=e.extensions[this.name].bufferView,n=e.extensions[this.name].attributes,o={},i={},l={};for(var c in n){var u=v[c]||c.toLowerCase();o[u]=n[c]}for(c in e.attributes){u=v[c]||c.toLowerCase();if(void 0!==n[c]){var p=r.accessors[e.attributes[c]],h=f[p.componentType];l[u]=h,i[u]=!0===p.normalized}}return t.getDependency("bufferView",s).then((function(e){return new Promise((function(t){a.decodeDracoFile(e,(function(e){for(var r in e.attributes){var a=e.attributes[r],s=i[r];void 0!==s&&(a.normalized=s)}t(e)}),o,l)}))}))},u.prototype.extendTexture=function(e,t){return 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),void 0!==t.texCoord&&console.warn('THREE.GLTFLoader: Custom UV sets in "'+this.name+'" extension not yet supported.'),e.needsUpdate=!0,e},p.prototype=Object.create(THREE.MeshStandardMaterial.prototype),p.prototype.constructor=p,p.prototype.copy=function(e){return THREE.MeshStandardMaterial.prototype.copy.call(this,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},m.prototype=Object.create(THREE.Interpolant.prototype),m.prototype.constructor=m,m.prototype.copySampleValue_=function(e){for(var t=this.resultBuffer,r=this.sampleValues,a=this.valueSize,s=e*a*3+a,n=0;n!==a;n++)t[n]=r[s+n];return t},m.prototype.beforeStart_=m.prototype.copySampleValue_,m.prototype.afterEnd_=m.prototype.copySampleValue_,m.prototype.interpolate_=function(e,t,r,a){for(var s=this.resultBuffer,n=this.sampleValues,o=this.valueSize,i=2*o,l=3*o,c=a-t,u=(r-t)/c,p=u*u,h=p*u,d=e*l,m=d-l,f=-2*h+3*p,E=h-p,T=1-f,g=E-p+u,v=0;v!==o;v++){var R=n[m+v+o],M=n[m+v+i]*c,y=n[d+v+o],S=n[d+v]*c;s[v]=T*R+g*M+f*y+E*S}return s};var f={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},E={9728:THREE.NearestFilter,9729:THREE.LinearFilter,9984:THREE.NearestMipmapNearestFilter,9985:THREE.LinearMipmapNearestFilter,9986:THREE.NearestMipmapLinearFilter,9987:THREE.LinearMipmapLinearFilter},T={33071:THREE.ClampToEdgeWrapping,33648:THREE.MirroredRepeatWrapping,10497:THREE.RepeatWrapping},g={SCALAR:1,VEC2:2,VEC3:3,VEC4:4,MAT2:4,MAT3:9,MAT4:16},v={POSITION:"position",NORMAL:"normal",TANGENT:"tangent",TEXCOORD_0:"uv",TEXCOORD_1:"uv2",COLOR_0:"color",WEIGHTS_0:"skinWeight",JOINTS_0:"skinIndex"},R={scale:"scale",translation:"position",rotation:"quaternion",weights:"morphTargetInfluences"},M={CUBICSPLINE:void 0,LINEAR:THREE.InterpolateLinear,STEP:THREE.InterpolateDiscrete},y={"image/png":THREE.RGBAFormat,"image/jpeg":THREE.RGBFormat};function S(e,t){return"string"!=typeof e||""===e?"":(/^https?:\/\//i.test(t)&&/^\//.test(e)&&(t=t.replace(/(^https?:\/\/[^\/]+).*/i,"$1")),/^(https?:)?\/\//i.test(e)||/^data:.*,.*$/i.test(e)||/^blob:.*$/i.test(e)?e:t+e)}function H(e,t,r){for(var a in r.extensions)void 0===e[a]&&(t.userData.gltfExtensions=t.userData.gltfExtensions||{},t.userData.gltfExtensions[a]=r.extensions[a])}function L(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 x(e,t){if(e.updateMorphTargets(),void 0!==t.weights)for(var r=0,a=t.weights.length;r<a;r++)e.morphTargetInfluences[r]=t.weights[r];if(t.extras&&Array.isArray(t.extras.targetNames)){var s=t.extras.targetNames;if(e.morphTargetInfluences.length===s.length){e.morphTargetDictionary={};for(r=0,a=s.length;r<a;r++)e.morphTargetDictionary[s[r]]=r}else console.warn("THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.")}}function A(e){for(var t="",r=Object.keys(e).sort(),a=0,s=r.length;a<s;a++)t+=r[a]+":"+e[r[a]]+";";return t}function _(e,r,a){this.json=e||{},this.extensions=r||{},this.options=a||{},this.cache=new t,this.primitiveCache={},this.textureLoader=new THREE.TextureLoader(this.options.manager),this.textureLoader.setCrossOrigin(this.options.crossOrigin),this.fileLoader=new THREE.FileLoader(this.options.manager),this.fileLoader.setResponseType("arraybuffer"),"use-credentials"===this.options.crossOrigin&&this.fileLoader.setWithCredentials(!0)}function w(e,t,r){var a=t.attributes,s=[];function n(t,a){return r.getDependency("accessor",t).then((function(t){e.setAttribute(a,t)}))}for(var o in a){var i=v[o]||o.toLowerCase();i in e.attributes||s.push(n(a[o],i))}if(void 0!==t.indices&&!e.index){var l=r.getDependency("accessor",t.indices).then((function(t){e.setIndex(t)}));s.push(l)}return L(e,t),function(e,t,r){var a=t.attributes,s=new THREE.Box3;if(void 0!==a.POSITION){var n=(d=r.json.accessors[a.POSITION]).min,o=d.max;if(void 0!==n&&void 0!==o){s.set(new THREE.Vector3(n[0],n[1],n[2]),new THREE.Vector3(o[0],o[1],o[2]));var i=t.targets;if(void 0!==i){for(var l=new THREE.Vector3,c=new THREE.Vector3,u=0,p=i.length;u<p;u++){var h=i[u];if(void 0!==h.POSITION){var d;n=(d=r.json.accessors[h.POSITION]).min,o=d.max;void 0!==n&&void 0!==o?(c.setX(Math.max(Math.abs(n[0]),Math.abs(o[0]))),c.setY(Math.max(Math.abs(n[1]),Math.abs(o[1]))),c.setZ(Math.max(Math.abs(n[2]),Math.abs(o[2]))),l.max(c)):console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.")}}s.expandByVector(l)}e.boundingBox=s;var m=new THREE.Sphere;s.getCenter(m.center),m.radius=s.min.distanceTo(s.max)/2,e.boundingSphere=m}else console.warn("THREE.GLTFLoader: Missing min/max properties for accessor POSITION.")}}(e,t,r),Promise.all(s).then((function(){return void 0!==t.targets?function(e,t,r){for(var a=!1,s=!1,n=0,o=t.length;n<o;n++){if(void 0!==(c=t[n]).POSITION&&(a=!0),void 0!==c.NORMAL&&(s=!0),a&&s)break}if(!a&&!s)return Promise.resolve(e);var i=[],l=[];for(n=0,o=t.length;n<o;n++){var c=t[n];if(a){var u=void 0!==c.POSITION?r.getDependency("accessor",c.POSITION):e.attributes.position;i.push(u)}if(s){u=void 0!==c.NORMAL?r.getDependency("accessor",c.NORMAL):e.attributes.normal;l.push(u)}}return Promise.all([Promise.all(i),Promise.all(l)]).then((function(t){var r=t[0],n=t[1];return a&&(e.morphAttributes.position=r),s&&(e.morphAttributes.normal=n),e.morphTargetsRelative=!0,e}))}(e,t.targets,r):e}))}function b(e,t){var r=e.getIndex();if(null===r){var a=[],s=e.getAttribute("position");if(void 0===s)return console.error("THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible."),e;for(var n=0;n<s.count;n++)a.push(n);e.setIndex(a),r=e.getIndex()}var o=r.count-2,i=[];if(t===THREE.TriangleFanDrawMode)for(n=1;n<=o;n++)i.push(r.getX(0)),i.push(r.getX(n)),i.push(r.getX(n+1));else for(n=0;n<o;n++)n%2==0?(i.push(r.getX(n)),i.push(r.getX(n+1)),i.push(r.getX(n+2))):(i.push(r.getX(n+2)),i.push(r.getX(n+1)),i.push(r.getX(n)));i.length/3!==o&&console.error("THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.");var l=e.clone();return l.setIndex(i),l}return _.prototype.parse=function(e,t){var r=this,a=this.json,s=this.extensions;this.cache.removeAll(),this.markDefs(),Promise.all([this.getDependencies("scene"),this.getDependencies("animation"),this.getDependencies("camera")]).then((function(t){var n={scene:t[0][a.scene||0],scenes:t[0],animations:t[1],cameras:t[2],asset:a.asset,parser:r,userData:{}};H(s,n,a),L(n,a),e(n)})).catch(t)},_.prototype.markDefs=function(){for(var e=this.json.nodes||[],t=this.json.skins||[],r=this.json.meshes||[],a={},s={},n=0,o=t.length;n<o;n++)for(var i=t[n].joints,l=0,c=i.length;l<c;l++)e[i[l]].isBone=!0;for(var u=0,p=e.length;u<p;u++){var h=e[u];void 0!==h.mesh&&(void 0===a[h.mesh]&&(a[h.mesh]=s[h.mesh]=0),a[h.mesh]++,void 0!==h.skin&&(r[h.mesh].isSkinnedMesh=!0))}this.json.meshReferences=a,this.json.meshUses=s},_.prototype.getDependency=function(e,t){var a=e+":"+t,s=this.cache.get(a);if(!s){switch(e){case"scene":s=this.loadScene(t);break;case"node":s=this.loadNode(t);break;case"mesh":s=this.loadMesh(t);break;case"accessor":s=this.loadAccessor(t);break;case"bufferView":s=this.loadBufferView(t);break;case"buffer":s=this.loadBuffer(t);break;case"material":s=this.loadMaterial(t);break;case"texture":s=this.loadTexture(t);break;case"skin":s=this.loadSkin(t);break;case"animation":s=this.loadAnimation(t);break;case"camera":s=this.loadCamera(t);break;case"light":s=this.extensions[r.KHR_LIGHTS_PUNCTUAL].loadLight(t);break;default:throw new Error("Unknown type: "+e)}this.cache.add(a,s)}return s},_.prototype.getDependencies=function(e){var t=this.cache.get(e);if(!t){var r=this,a=this.json[e+("mesh"===e?"es":"s")]||[];t=Promise.all(a.map((function(t,a){return r.getDependency(e,a)}))),this.cache.add(e,t)}return t},_.prototype.loadBuffer=function(e){var t=this.json.buffers[e],a=this.fileLoader;if(t.type&&"arraybuffer"!==t.type)throw new Error("THREE.GLTFLoader: "+t.type+" buffer type is not supported.");if(void 0===t.uri&&0===e)return Promise.resolve(this.extensions[r.KHR_BINARY_GLTF].body);var s=this.options;return new Promise((function(e,r){a.load(S(t.uri,s.path),e,void 0,(function(){r(new Error('THREE.GLTFLoader: Failed to load buffer "'+t.uri+'".'))}))}))},_.prototype.loadBufferView=function(e){var t=this.json.bufferViews[e];return this.getDependency("buffer",t.buffer).then((function(e){var r=t.byteLength||0,a=t.byteOffset||0;return e.slice(a,a+r)}))},_.prototype.loadAccessor=function(e){var t=this,r=this.json,a=this.json.accessors[e];if(void 0===a.bufferView&&void 0===a.sparse)return Promise.resolve(null);var s=[];return void 0!==a.bufferView?s.push(this.getDependency("bufferView",a.bufferView)):s.push(null),void 0!==a.sparse&&(s.push(this.getDependency("bufferView",a.sparse.indices.bufferView)),s.push(this.getDependency("bufferView",a.sparse.values.bufferView))),Promise.all(s).then((function(e){var s,n,o=e[0],i=g[a.type],l=f[a.componentType],c=l.BYTES_PER_ELEMENT,u=c*i,p=a.byteOffset||0,h=void 0!==a.bufferView?r.bufferViews[a.bufferView].byteStride:void 0,d=!0===a.normalized;if(h&&h!==u){var m=Math.floor(p/h),E="InterleavedBuffer:"+a.bufferView+":"+a.componentType+":"+m+":"+a.count,T=t.cache.get(E);T||(s=new l(o,m*h,a.count*h/c),T=new THREE.InterleavedBuffer(s,h/c),t.cache.add(E,T)),n=new THREE.InterleavedBufferAttribute(T,i,p%h/c,d)}else s=null===o?new l(a.count*i):new l(o,p,a.count*i),n=new THREE.BufferAttribute(s,i,d);if(void 0!==a.sparse){var v=g.SCALAR,R=f[a.sparse.indices.componentType],M=a.sparse.indices.byteOffset||0,y=a.sparse.values.byteOffset||0,S=new R(e[1],M,a.sparse.count*v),H=new l(e[2],y,a.sparse.count*i);null!==o&&(n=new THREE.BufferAttribute(n.array.slice(),n.itemSize,n.normalized));for(var L=0,x=S.length;L<x;L++){var A=S[L];if(n.setX(A,H[L*i]),i>=2&&n.setY(A,H[L*i+1]),i>=3&&n.setZ(A,H[L*i+2]),i>=4&&n.setW(A,H[L*i+3]),i>=5)throw new Error("THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.")}}return n}))},_.prototype.loadTexture=function(e){var t,a=this,s=this.json,n=this.options,o=this.textureLoader,i=self.URL||self.webkitURL,l=s.textures[e],c=l.extensions||{},u=(t=c[r.MSFT_TEXTURE_DDS]?s.images[c[r.MSFT_TEXTURE_DDS].source]:s.images[l.source]).uri,p=!1;return void 0!==t.bufferView&&(u=a.getDependency("bufferView",t.bufferView).then((function(e){p=!0;var r=new Blob([e],{type:t.mimeType});return u=i.createObjectURL(r)}))),Promise.resolve(u).then((function(e){var t=n.manager.getHandler(e);return t||(t=c[r.MSFT_TEXTURE_DDS]?a.extensions[r.MSFT_TEXTURE_DDS].ddsLoader:o),new Promise((function(r,a){t.load(S(e,n.path),r,void 0,a)}))})).then((function(e){!0===p&&i.revokeObjectURL(u),e.flipY=!1,l.name&&(e.name=l.name),t.mimeType in y&&(e.format=y[t.mimeType]);var r=(s.samplers||{})[l.sampler]||{};return e.magFilter=E[r.magFilter]||THREE.LinearFilter,e.minFilter=E[r.minFilter]||THREE.LinearMipmapLinearFilter,e.wrapS=T[r.wrapS]||THREE.RepeatWrapping,e.wrapT=T[r.wrapT]||THREE.RepeatWrapping,e}))},_.prototype.assignTexture=function(e,t,a){var s=this;return this.getDependency("texture",a.index).then((function(n){if(!n.isCompressedTexture)switch(t){case"aoMap":case"emissiveMap":case"metalnessMap":case"normalMap":case"roughnessMap":n.format=THREE.RGBFormat}if(void 0===a.texCoord||0==a.texCoord||"aoMap"===t&&1==a.texCoord||console.warn("THREE.GLTFLoader: Custom UV set "+a.texCoord+" for texture "+t+" not yet supported."),s.extensions[r.KHR_TEXTURE_TRANSFORM]){var o=void 0!==a.extensions?a.extensions[r.KHR_TEXTURE_TRANSFORM]:void 0;o&&(n=s.extensions[r.KHR_TEXTURE_TRANSFORM].extendTexture(n,o))}e[t]=n}))},_.prototype.assignFinalMaterial=function(e){var t=e.geometry,r=e.material,a=void 0!==t.attributes.tangent,s=void 0!==t.attributes.color,n=void 0===t.attributes.normal,o=!0===e.isSkinnedMesh,i=Object.keys(t.morphAttributes).length>0,l=i&&void 0!==t.morphAttributes.normal;if(e.isPoints){var c="PointsMaterial:"+r.uuid,u=this.cache.get(c);u||(u=new THREE.PointsMaterial,THREE.Material.prototype.copy.call(u,r),u.color.copy(r.color),u.map=r.map,u.sizeAttenuation=!1,this.cache.add(c,u)),r=u}else if(e.isLine){c="LineBasicMaterial:"+r.uuid;var p=this.cache.get(c);p||(p=new THREE.LineBasicMaterial,THREE.Material.prototype.copy.call(p,r),p.color.copy(r.color),this.cache.add(c,p)),r=p}if(a||s||n||o||i){c="ClonedMaterial:"+r.uuid+":";r.isGLTFSpecularGlossinessMaterial&&(c+="specular-glossiness:"),o&&(c+="skinning:"),a&&(c+="vertex-tangents:"),s&&(c+="vertex-colors:"),n&&(c+="flat-shading:"),i&&(c+="morph-targets:"),l&&(c+="morph-normals:");var h=this.cache.get(c);h||(h=r.clone(),o&&(h.skinning=!0),a&&(h.vertexTangents=!0),s&&(h.vertexColors=!0),n&&(h.flatShading=!0),i&&(h.morphTargets=!0),l&&(h.morphNormals=!0),this.cache.add(c,h)),r=h}r.aoMap&&void 0===t.attributes.uv2&&void 0!==t.attributes.uv&&t.setAttribute("uv2",new THREE.BufferAttribute(t.attributes.uv.array,2)),r.normalScale&&!a&&(r.normalScale.y=-r.normalScale.y),r.clearcoatNormalScale&&!a&&(r.clearcoatNormalScale.y=-r.clearcoatNormalScale.y),e.material=r},_.prototype.loadMaterial=function(e){var t,a=this.json,s=this.extensions,n=a.materials[e],o={},i=n.extensions||{},l=[];if(i[r.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS]){var c=s[r.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS];t=c.getMaterialType(),l.push(c.extendParams(o,n,this))}else if(i[r.KHR_MATERIALS_UNLIT]){var u=s[r.KHR_MATERIALS_UNLIT];t=u.getMaterialType(),l.push(u.extendParams(o,n,this))}else{t=THREE.MeshStandardMaterial;var h=n.pbrMetallicRoughness||{};if(o.color=new THREE.Color(1,1,1),o.opacity=1,Array.isArray(h.baseColorFactor)){var d=h.baseColorFactor;o.color.fromArray(d),o.opacity=d[3]}void 0!==h.baseColorTexture&&l.push(this.assignTexture(o,"map",h.baseColorTexture)),o.metalness=void 0!==h.metallicFactor?h.metallicFactor:1,o.roughness=void 0!==h.roughnessFactor?h.roughnessFactor:1,void 0!==h.metallicRoughnessTexture&&(l.push(this.assignTexture(o,"metalnessMap",h.metallicRoughnessTexture)),l.push(this.assignTexture(o,"roughnessMap",h.metallicRoughnessTexture)))}!0===n.doubleSided&&(o.side=THREE.DoubleSide);var m=n.alphaMode||"OPAQUE";if("BLEND"===m?(o.transparent=!0,o.depthWrite=!1):(o.transparent=!1,"MASK"===m&&(o.alphaTest=void 0!==n.alphaCutoff?n.alphaCutoff:.5)),void 0!==n.normalTexture&&t!==THREE.MeshBasicMaterial&&(l.push(this.assignTexture(o,"normalMap",n.normalTexture)),o.normalScale=new THREE.Vector2(1,1),void 0!==n.normalTexture.scale&&o.normalScale.set(n.normalTexture.scale,n.normalTexture.scale)),void 0!==n.occlusionTexture&&t!==THREE.MeshBasicMaterial&&(l.push(this.assignTexture(o,"aoMap",n.occlusionTexture)),void 0!==n.occlusionTexture.strength&&(o.aoMapIntensity=n.occlusionTexture.strength)),void 0!==n.emissiveFactor&&t!==THREE.MeshBasicMaterial&&(o.emissive=(new THREE.Color).fromArray(n.emissiveFactor)),void 0!==n.emissiveTexture&&t!==THREE.MeshBasicMaterial&&l.push(this.assignTexture(o,"emissiveMap",n.emissiveTexture)),i[r.KHR_MATERIALS_CLEARCOAT]){var f=s[r.KHR_MATERIALS_CLEARCOAT];t=f.getMaterialType(),l.push(f.extendParams(o,{extensions:i},this))}return Promise.all(l).then((function(){var e;return e=t===p?s[r.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS].createMaterial(o):new t(o),n.name&&(e.name=n.name),e.map&&(e.map.encoding=THREE.sRGBEncoding),e.emissiveMap&&(e.emissiveMap.encoding=THREE.sRGBEncoding),L(e,n),n.extensions&&H(s,e,n),e}))},_.prototype.loadGeometries=function(e){var t,a,s=this,n=this.extensions,o=this.primitiveCache;function i(e){return n[r.KHR_DRACO_MESH_COMPRESSION].decodePrimitive(e,s).then((function(t){return w(t,e,s)}))}for(var l=[],c=0,u=e.length;c<u;c++){var p,h=e[c],d=(a=void 0,(a=(t=h).extensions&&t.extensions[r.KHR_DRACO_MESH_COMPRESSION])?"draco:"+a.bufferView+":"+a.indices+":"+A(a.attributes):t.indices+":"+A(t.attributes)+":"+t.mode),m=o[d];m?l.push(m.promise):(p=h.extensions&&h.extensions[r.KHR_DRACO_MESH_COMPRESSION]?i(h):w(new THREE.BufferGeometry,h,s),o[d]={primitive:h,promise:p},l.push(p))}return Promise.all(l)},_.prototype.loadMesh=function(e){for(var t=this,r=this.json.meshes[e],a=r.primitives,s=[],n=0,o=a.length;n<o;n++){var i=void 0===a[n].material?(void 0===(l=this.cache).DefaultMaterial&&(l.DefaultMaterial=new THREE.MeshStandardMaterial({color:16777215,emissive:0,metalness:1,roughness:1,transparent:!1,depthTest:!0,side:THREE.FrontSide})),l.DefaultMaterial):this.getDependency("material",a[n].material);s.push(i)}var l;return s.push(t.loadGeometries(a)),Promise.all(s).then((function(s){for(var n=s.slice(0,s.length-1),o=s[s.length-1],i=[],l=0,c=o.length;l<c;l++){var u,p=o[l],h=a[l],d=n[l];if(4===h.mode||5===h.mode||6===h.mode||void 0===h.mode)!0!==(u=!0===r.isSkinnedMesh?new THREE.SkinnedMesh(p,d):new THREE.Mesh(p,d)).isSkinnedMesh||u.geometry.attributes.skinWeight.normalized||u.normalizeSkinWeights(),5===h.mode?u.geometry=b(u.geometry,THREE.TriangleStripDrawMode):6===h.mode&&(u.geometry=b(u.geometry,THREE.TriangleFanDrawMode));else if(1===h.mode)u=new THREE.LineSegments(p,d);else if(3===h.mode)u=new THREE.Line(p,d);else if(2===h.mode)u=new THREE.LineLoop(p,d);else{if(0!==h.mode)throw new Error("THREE.GLTFLoader: Primitive mode unsupported: "+h.mode);u=new THREE.Points(p,d)}Object.keys(u.geometry.morphAttributes).length>0&&x(u,r),u.name=r.name||"mesh_"+e,o.length>1&&(u.name+="_"+l),L(u,r),t.assignFinalMaterial(u),i.push(u)}if(1===i.length)return i[0];var m=new THREE.Group;for(l=0,c=i.length;l<c;l++)m.add(i[l]);return m}))},_.prototype.loadCamera=function(e){var t,r=this.json.cameras[e],a=r[r.type];if(a)return"perspective"===r.type?t=new THREE.PerspectiveCamera(THREE.MathUtils.radToDeg(a.yfov),a.aspectRatio||1,a.znear||1,a.zfar||2e6):"orthographic"===r.type&&(t=new THREE.OrthographicCamera(a.xmag/-2,a.xmag/2,a.ymag/2,a.ymag/-2,a.znear,a.zfar)),r.name&&(t.name=r.name),L(t,r),Promise.resolve(t);console.warn("THREE.GLTFLoader: Missing camera parameters.")},_.prototype.loadSkin=function(e){var t=this.json.skins[e],r={joints:t.joints};return void 0===t.inverseBindMatrices?Promise.resolve(r):this.getDependency("accessor",t.inverseBindMatrices).then((function(e){return r.inverseBindMatrices=e,r}))},_.prototype.loadAnimation=function(e){for(var t=this.json.animations[e],r=[],a=[],s=[],n=[],o=[],i=0,l=t.channels.length;i<l;i++){var c=t.channels[i],u=t.samplers[c.sampler],p=c.target,h=void 0!==p.node?p.node:p.id,d=void 0!==t.parameters?t.parameters[u.input]:u.input,f=void 0!==t.parameters?t.parameters[u.output]:u.output;r.push(this.getDependency("node",h)),a.push(this.getDependency("accessor",d)),s.push(this.getDependency("accessor",f)),n.push(u),o.push(p)}return Promise.all([Promise.all(r),Promise.all(a),Promise.all(s),Promise.all(n),Promise.all(o)]).then((function(r){for(var a=r[0],s=r[1],n=r[2],o=r[3],i=r[4],l=[],c=0,u=a.length;c<u;c++){var p=a[c],h=s[c],d=n[c],f=o[c],E=i[c];if(void 0!==p){var T;switch(p.updateMatrix(),p.matrixAutoUpdate=!0,R[E.path]){case R.weights:T=THREE.NumberKeyframeTrack;break;case R.rotation:T=THREE.QuaternionKeyframeTrack;break;case R.position:case R.scale:default:T=THREE.VectorKeyframeTrack}var g=p.name?p.name:p.uuid,v=void 0!==f.interpolation?M[f.interpolation]:THREE.InterpolateLinear,y=[];R[E.path]===R.weights?p.traverse((function(e){!0===e.isMesh&&e.morphTargetInfluences&&y.push(e.name?e.name:e.uuid)})):y.push(g);var S=d.array;if(d.normalized){var H;if(S.constructor===Int8Array)H=1/127;else if(S.constructor===Uint8Array)H=1/255;else if(S.constructor==Int16Array)H=1/32767;else{if(S.constructor!==Uint16Array)throw new Error("THREE.GLTFLoader: Unsupported output accessor component type.");H=1/65535}for(var L=new Float32Array(S.length),x=0,A=S.length;x<A;x++)L[x]=S[x]*H;S=L}for(x=0,A=y.length;x<A;x++){var _=new T(y[x]+"."+R[E.path],h.array,S,v);"CUBICSPLINE"===f.interpolation&&(_.createInterpolant=function(e){return new m(this.times,this.values,this.getValueSize()/3,e)},_.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline=!0),l.push(_)}}}var w=t.name?t.name:"animation_"+e;return new THREE.AnimationClip(w,void 0,l)}))},_.prototype.loadNode=function(e){var t,a=this.json,s=this.extensions,n=a.meshReferences,o=a.meshUses,i=a.nodes[e];return(t=[],void 0!==i.mesh&&t.push(this.getDependency("mesh",i.mesh).then((function(e){var t;if(n[i.mesh]>1){var r=o[i.mesh]++;(t=e.clone()).name+="_instance_"+r}else t=e;return void 0!==i.weights&&t.traverse((function(e){if(e.isMesh)for(var t=0,r=i.weights.length;t<r;t++)e.morphTargetInfluences[t]=i.weights[t]})),t}))),void 0!==i.camera&&t.push(this.getDependency("camera",i.camera)),i.extensions&&i.extensions[r.KHR_LIGHTS_PUNCTUAL]&&void 0!==i.extensions[r.KHR_LIGHTS_PUNCTUAL].light&&t.push(this.getDependency("light",i.extensions[r.KHR_LIGHTS_PUNCTUAL].light)),Promise.all(t)).then((function(e){var t;if((t=!0===i.isBone?new THREE.Bone:e.length>1?new THREE.Group:1===e.length?e[0]:new THREE.Object3D)!==e[0])for(var r=0,a=e.length;r<a;r++)t.add(e[r]);if(i.name&&(t.userData.name=i.name,t.name=THREE.PropertyBinding.sanitizeNodeName(i.name)),L(t,i),i.extensions&&H(s,t,i),void 0!==i.matrix){var n=new THREE.Matrix4;n.fromArray(i.matrix),t.applyMatrix4(n)}else void 0!==i.translation&&t.position.fromArray(i.translation),void 0!==i.rotation&&t.quaternion.fromArray(i.rotation),void 0!==i.scale&&t.scale.fromArray(i.scale);return t}))},_.prototype.loadScene=function(){function e(t,r,a,s){var n=a.nodes[t];return s.getDependency("node",t).then((function(e){return void 0===n.skin?e:s.getDependency("skin",n.skin).then((function(e){for(var r=[],a=0,n=(t=e).joints.length;a<n;a++)r.push(s.getDependency("node",t.joints[a]));return Promise.all(r)})).then((function(r){return e.traverse((function(e){if(e.isMesh){for(var a=[],s=[],n=0,o=r.length;n<o;n++){var i=r[n];if(i){a.push(i);var l=new THREE.Matrix4;void 0!==t.inverseBindMatrices&&l.fromArray(t.inverseBindMatrices.array,16*n),s.push(l)}else console.warn('THREE.GLTFLoader: Joint "%s" could not be found.',t.joints[n])}e.bind(new THREE.Skeleton(a,s),e.matrixWorld)}})),e}));var t})).then((function(t){r.add(t);var o=[];if(n.children)for(var i=n.children,l=0,c=i.length;l<c;l++){var u=i[l];o.push(e(u,t,a,s))}return Promise.all(o)}))}return function(t){var r=this.json,a=this.extensions,s=this.json.scenes[t],n=new THREE.Group;s.name&&(n.name=s.name),L(n,s),s.extensions&&H(a,n,s);for(var o=s.nodes||[],i=[],l=0,c=o.length;l<c;l++)i.push(e(o[l],n,r,this));return Promise.all(i).then((function(){return n}))}}(),e}();