var __decorate=this&&this.__decorate||function(e,t,r,n){var o,a=arguments.length,i=a<3?t:null===n?n=Object.getOwnPropertyDescriptor(t,r):n;if("object"==typeof Reflect&&"function"==typeof Reflect.decorate)i=Reflect.decorate(e,t,r,n);else for(var s=e.length-1;s>=0;s--)(o=e[s])&&(i=(a<3?o(i):a>3?o(t,r,i):o(t,r))||i);return a>3&&i&&Object.defineProperty(t,r,i),i},__extends=this&&this.__extends||(function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function n(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(n.prototype=r.prototype,new n)}})();!(function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("babylonjs")):"function"==typeof define&&define.amd?define("babylonjs-loaders",["babylonjs"],t):"object"==typeof exports?exports["babylonjs-loaders"]=t(require("babylonjs")):e.BABYLON=t(e.BABYLON)})(this,(function(e){var e;!(function(e){var t=(function(){function t(){this.solidPattern=/solid (\S*)([\S\s]*)endsolid[ ]*(\S*)/g,this.facetsPattern=/facet([\s\S]*?)endfacet/g,this.normalPattern=/normal[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g,this.vertexPattern=/vertex[\s]+([\-+]?[0-9]+\.?[0-9]*([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+[\s]+([\-+]?[0-9]*\.?[0-9]+([eE][\-+]?[0-9]+)?)+/g,this.name="stl",this.extensions={".stl":{isBinary:!0}}}return t.prototype.importMesh=function(t,r,n,o,a,i,s){var l;if(this.isBinary(n)){var u=new e.Mesh("stlmesh",r);return this.parseBinary(u,n),a&&a.push(u),!0}for(var c=new Uint8Array(n),d="",f=0;f<n.byteLength;f++)d+=String.fromCharCode(c[f]);for(n=d;l=this.solidPattern.exec(n);){var h=l[1];if(h!=l[3])return e.Tools.Error("Error in STL, solid name != endsolid name"),!1;if(t&&h)if(t instanceof Array){if(!t.indexOf(h))continue}else if(h!==t)continue;h=h||"stlmesh";var u=new e.Mesh(h,r);this.parseASCII(u,l[2]),a&&a.push(u)}return!0},t.prototype.load=function(e,t,r){var n=this.importMesh(null,e,t,r,null,null,null);return n&&e.createDefaultCameraOrLight(),n},t.prototype.loadAssetContainer=function(t,r,n,o){var a=new e.AssetContainer(t);return this.importMesh(null,t,r,n,a.meshes,null,null),a.removeAllFromScene(),a},t.prototype.isBinary=function(e){var t,r;if(r=new DataView(e),t=50,84+r.getUint32(80,!0)*t===r.byteLength)return!0;for(var n=r.byteLength,o=0;o<n;o++)if(r.getUint8(o)>127)return!0;return!1},t.prototype.parseBinary=function(t,r){for(var n=new DataView(r),o=n.getUint32(80,!0),a=0,i=new Float32Array(3*o*3),s=new Float32Array(3*o*3),l=new Uint32Array(3*o),u=0,c=0;c<o;c++){for(var d=84+50*c,f=n.getFloat32(d,!0),h=n.getFloat32(d+4,!0),p=n.getFloat32(d+8,!0),m=1;m<=3;m++){var _=d+12*m;i[a]=n.getFloat32(_,!0),i[a+2]=n.getFloat32(_+4,!0),i[a+1]=n.getFloat32(_+8,!0),s[a]=f,s[a+2]=h,s[a+1]=p,a+=3}l[u]=u++,l[u]=u++,l[u]=u++}t.setVerticesData(e.VertexBuffer.PositionKind,i),t.setVerticesData(e.VertexBuffer.NormalKind,s),t.setIndices(l),t.computeWorldMatrix(!0)},t.prototype.parseASCII=function(t,r){for(var n,o=[],a=[],i=[],s=0;n=this.facetsPattern.exec(r);){var l=n[1],u=this.normalPattern.exec(l);if(this.normalPattern.lastIndex=0,u){for(var c,d=[Number(u[1]),Number(u[5]),Number(u[3])];c=this.vertexPattern.exec(l);)o.push(Number(c[1]),Number(c[5]),Number(c[3])),a.push(d[0],d[1],d[2]);i.push(s++,s++,s++),this.vertexPattern.lastIndex=0}}this.facetsPattern.lastIndex=0,t.setVerticesData(e.VertexBuffer.PositionKind,o),t.setVerticesData(e.VertexBuffer.NormalKind,a),t.setIndices(i),t.computeWorldMatrix(!0)},t})();e.STLFileLoader=t,e.SceneLoader&&e.SceneLoader.RegisterPlugin(new t)})(e||(e={}));var e;!(function(e){var t=(function(){function t(){this.materials=[]}return t.prototype.parseMTL=function(r,n,o){for(var a,i=n.split("\n"),s=null,l=0;l<i.length;l++){var u=i[l].trim();if(0!==u.length&&"#"!==u.charAt(0)){var c=u.indexOf(" "),d=c>=0?u.substring(0,c):u;d=d.toLowerCase();var f=c>=0?u.substring(c+1).trim():"";"newmtl"===d?(s&&this.materials.push(s),s=new e.StandardMaterial(f,r)):"kd"===d&&s?(a=f.split(/\s+/,3).map(parseFloat),s.diffuseColor=e.Color3.FromArray(a)):"ka"===d&&s?(a=f.split(/\s+/,3).map(parseFloat),s.ambientColor=e.Color3.FromArray(a)):"ks"===d&&s?(a=f.split(/\s+/,3).map(parseFloat),s.specularColor=e.Color3.FromArray(a)):"ke"===d&&s?(a=f.split(/\s+/,3).map(parseFloat),s.emissiveColor=e.Color3.FromArray(a)):"ns"===d&&s?s.specularPower=parseFloat(f):"d"===d&&s?s.alpha=parseFloat(f):"map_ka"===d&&s?s.ambientTexture=t._getTexture(o,f,r):"map_kd"===d&&s?s.diffuseTexture=t._getTexture(o,f,r):"map_ks"===d&&s?s.specularTexture=t._getTexture(o,f,r):"map_ns"===d||("map_bump"===d&&s?s.bumpTexture=t._getTexture(o,f,r):"map_d"===d&&s&&(s.opacityTexture=t._getTexture(o,f,r)))}}s&&this.materials.push(s)},t._getTexture=function(t,r,n){if(!r)return null;var o=t;if("file:"===t){var a=r.lastIndexOf("\\");a===-1&&(a=r.lastIndexOf("/")),o+=a>-1?r.substr(a+1):r}else o+=r;return new e.Texture(o,n)},t})();e.MTLFileLoader=t;var r=(function(){function r(){this.name="obj",this.extensions=".obj",this.obj=/^o/,this.group=/^g/,this.mtllib=/^mtllib /,this.usemtl=/^usemtl /,this.smooth=/^s /,this.vertexPattern=/v( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/,this.normalPattern=/vn( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/,this.uvPattern=/vt( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/,this.facePattern1=/f\s+(([\d]{1,}[\s]?){3,})+/,this.facePattern2=/f\s+((([\d]{1,}\/[\d]{1,}[\s]?){3,})+)/,this.facePattern3=/f\s+((([\d]{1,}\/[\d]{1,}\/[\d]{1,}[\s]?){3,})+)/,this.facePattern4=/f\s+((([\d]{1,}\/\/[\d]{1,}[\s]?){3,})+)/}return r.prototype._loadMTL=function(t,r,n){var o=e.Tools.BaseUrl+r+t;e.Tools.LoadFile(o,n,void 0,void 0,!1,(function(){console.warn("Error - Unable to load "+o)}))},r.prototype.importMesh=function(e,t,r,n,o,a,i){var s=this._parseSolid(e,t,r,n);return o&&s.forEach((function(e){o.push(e)})),!0},r.prototype.load=function(e,t,r){return this.importMesh(null,e,t,r,null,null,null)},r.prototype.loadAssetContainer=function(t,r,n,o){var a=new e.AssetContainer(t);return this.importMesh(null,t,r,n,a.meshes,null,null),a.removeAllFromScene(),a},r.prototype._parseSolid=function(n,o,a,i){for(var s,l=[],u=[],c=[],d=[],f=[],h=[],p=[],m=[],_=[],y=0,v=!1,A=[],b=[],T=[],g=[],E="",L="",x=new t,O=1,M=!0,S=function(e,t){e[t[0]]||(e[t[0]]={normals:[],idx:[]});var r=e[t[0]].normals.indexOf(t[1]);return r===-1?-1:e[t[0]].idx[r]},N=function(e,t){e[t[0]]||(e[t[0]]={normals:[],idx:[],uv:[]});var r=e[t[0]].normals.indexOf(t[1]);return 1!=r&&t[2]==e[t[0]].uv[r]?e[t[0]].idx[r]:-1},w=function(e,t,n,o,a,i){var s;s=r.OPTIMIZE_WITH_UV?N(_,[e,n,t]):S(_,[e,n]),s==-1?(f.push(h.length),h.push(o),p.push(a),m.push(i),_[e].normals.push(n),_[e].idx.push(y++),r.OPTIMIZE_WITH_UV&&_[e].uv.push(t)):f.push(s)},F=function(){for(var e=0;e<h.length;e++)A.push(h[e].x,h[e].y,h[e].z),b.push(m[e].x,m[e].y,m[e].z),T.push(p[e].x,p[e].y);h=[],m=[],p=[],_=[],y=0},I=function(e,t){t+1<e.length&&(g.push(e[0],e[t],e[t+1]),t+=1,I(e,t))},R=function(){d.length>0&&(s=d[d.length-1],F(),f.reverse(),s.indices=f.slice(),s.positions=A.slice(),s.normals=b.slice(),s.uvs=T.slice(),f=[],A=[],b=[],T=[])},P=a.split("\n"),C=0;C<P.length;C++){var B,G=P[C].trim();if(0!==G.length&&"#"!==G.charAt(0))if(null!==(B=this.vertexPattern.exec(G)))l.push(new e.Vector3(parseFloat(B[1]),parseFloat(B[2]),parseFloat(B[3])));else if(null!==(B=this.normalPattern.exec(G)))u.push(new e.Vector3(parseFloat(B[1]),parseFloat(B[2]),parseFloat(B[3])));else if(null!==(B=this.uvPattern.exec(G)))c.push(new e.Vector2(parseFloat(B[1]),parseFloat(B[2])));else if(null!==(B=this.facePattern3.exec(G)))!(function(e,t){I(e,t);for(var r=0;r<g.length;r++){var n=g[r].split("/"),o=parseInt(n[0])-1,a=parseInt(n[1])-1,i=parseInt(n[2])-1;w(o,a,i,l[o],c[a],u[i])}g=[]})(B[1].trim().split(" "),1);else if(null!==(B=this.facePattern4.exec(G)))!(function(t,r){I(t,r);for(var n=0;n<g.length;n++){var o=g[n].split("//"),a=parseInt(o[0])-1,i=parseInt(o[1])-1;w(a,1,i,l[a],e.Vector2.Zero(),u[i])}g=[]})(B[1].trim().split(" "),1);else if(null!==(B=this.facePattern2.exec(G)))!(function(t,r){I(t,r);for(var n=0;n<g.length;n++){var o=g[n].split("/"),a=parseInt(o[0])-1,i=parseInt(o[1])-1;w(a,i,0,l[a],c[i],e.Vector3.Up())}g=[]})(B[1].trim().split(" "),1);else if(null!==(B=this.facePattern1.exec(G)))!(function(t,r){I(t,r);for(var n=0;n<g.length;n++){var o=parseInt(g[n])-1;w(o,0,0,l[o],e.Vector2.Zero(),e.Vector3.Up())}g=[]})(B[1].trim().split(" "),1);else if(this.group.test(G)||this.obj.test(G)){var V={name:G.substring(2).trim(),indices:void 0,positions:void 0,normals:void 0,uvs:void 0,materialName:""};R(),d.push(V),v=!0,M=!0,O=1}else if(this.usemtl.test(G)){if(E=G.substring(7).trim(),!M){R();var V={name:"_mm"+O.toString(),indices:void 0,positions:void 0,normals:void 0,uvs:void 0,materialName:E};O++,d.push(V)}v&&M&&(d[d.length-1].materialName=E,M=!1)}else this.mtllib.test(G)?L=G.substring(7).trim():this.smooth.test(G)||console.log("Unhandled expression at line : "+G)}v&&(s=d[d.length-1],f.reverse(),F(),s.indices=f,s.positions=A,s.normals=b,s.uvs=T),v||(f.reverse(),F(),d.push({name:e.Geometry.RandomId(),indices:f,positions:A,normals:b,uvs:T,materialName:E}));for(var D=[],U=new Array,k=0;k<d.length;k++){if(n&&d[k].name)if(n instanceof Array){if(n.indexOf(d[k].name)==-1)continue}else if(d[k].name!==n)continue;s=d[k];var j=new e.Mesh(d[k].name,o);U.push(d[k].materialName);var H=new e.VertexData;H.positions=s.positions,H.normals=s.normals,H.uvs=s.uvs,H.indices=s.indices,H.applyToMesh(j),D.push(j)}return""!==L&&this._loadMTL(L,i,(function(e){x.parseMTL(o,e,i);for(var t=0;t<x.materials.length;t++){for(var r,n=0,a=[];(r=U.indexOf(x.materials[t].name,n))>-1;)a.push(r),n=r+1;if(r==-1&&0==a.length)x.materials[t].dispose();else for(var s=0;s<a.length;s++)D[a[s]].material=x.materials[t]}})),D},r.OPTIMIZE_WITH_UV=!1,r})();e.OBJFileLoader=r,e.SceneLoader&&e.SceneLoader.RegisterPlugin(new r)})(e||(e={}));var e;!(function(e){var t;!(function(e){e[e.AUTO=0]="AUTO",e[e.FORCE_RIGHT_HANDED=1]="FORCE_RIGHT_HANDED"})(t=e.GLTFLoaderCoordinateSystemMode||(e.GLTFLoaderCoordinateSystemMode={}));var r;!(function(e){e[e.NONE=0]="NONE",e[e.FIRST=1]="FIRST",e[e.ALL=2]="ALL"})(r=e.GLTFLoaderAnimationStartMode||(e.GLTFLoaderAnimationStartMode={}));!(function(e){e[e.Loading=0]="Loading",e[e.Ready=1]="Ready",e[e.Complete=2]="Complete"})(e.GLTFLoaderState||(e.GLTFLoaderState={}));var n=(function(){function n(){this.onParsedObservable=new e.Observable,this.coordinateSystemMode=t.AUTO,this.animationStartMode=r.FIRST,this.compileMaterials=!1,this.useClipPlane=!1,this.compileShadowGenerators=!1,this.onMeshLoadedObservable=new e.Observable,this.onTextureLoadedObservable=new e.Observable,this.onMaterialLoadedObservable=new e.Observable,this.onAnimationGroupLoadedObservable=new e.Observable,this.onCompleteObservable=new e.Observable,this.onDisposeObservable=new e.Observable,this.onExtensionLoadedObservable=new e.Observable,this._loader=null,this.name="gltf",this.extensions={".gltf":{isBinary:!1},".glb":{isBinary:!0}}}return Object.defineProperty(n.prototype,"onParsed",{set:function(e){this._onParsedObserver&&this.onParsedObservable.remove(this._onParsedObserver),this._onParsedObserver=this.onParsedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onMeshLoaded",{set:function(e){this._onMeshLoadedObserver&&this.onMeshLoadedObservable.remove(this._onMeshLoadedObserver),this._onMeshLoadedObserver=this.onMeshLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onTextureLoaded",{set:function(e){this._onTextureLoadedObserver&&this.onTextureLoadedObservable.remove(this._onTextureLoadedObserver),this._onTextureLoadedObserver=this.onTextureLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onMaterialLoaded",{set:function(e){this._onMaterialLoadedObserver&&this.onMaterialLoadedObservable.remove(this._onMaterialLoadedObserver),this._onMaterialLoadedObserver=this.onMaterialLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onAnimationGroupLoaded",{set:function(e){this._onAnimationGroupLoadedObserver&&this.onAnimationGroupLoadedObservable.remove(this._onAnimationGroupLoadedObserver),this._onAnimationGroupLoadedObserver=this.onAnimationGroupLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onComplete",{set:function(e){this._onCompleteObserver&&this.onCompleteObservable.remove(this._onCompleteObserver),this._onCompleteObserver=this.onCompleteObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onDispose",{set:function(e){this._onDisposeObserver&&this.onDisposeObservable.remove(this._onDisposeObserver),this._onDisposeObserver=this.onDisposeObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(n.prototype,"onExtensionLoaded",{set:function(e){this._onExtensionLoadedObserver&&this.onExtensionLoadedObservable.remove(this._onExtensionLoadedObserver),this._onExtensionLoadedObserver=this.onExtensionLoadedObservable.add(e)},enumerable:!0,configurable:!0}),n.prototype.whenCompleteAsync=function(){var e=this;return new Promise(function(t){e.onCompleteObservable.add((function(){t()}),void 0,void 0,void 0,!0)})},Object.defineProperty(n.prototype,"loaderState",{get:function(){return this._loader?this._loader.state:null},enumerable:!0,configurable:!0}),n.prototype.dispose=function(){this._loader&&(this._loader.dispose(),this._loader=null),this.onMeshLoadedObservable.clear(),this.onTextureLoadedObservable.clear(),this.onMaterialLoadedObservable.clear(),this.onDisposeObservable.notifyObservers(this),this.onDisposeObservable.clear()},n.prototype.importMeshAsync=function(e,t,r,n,o){var a=this;return Promise.resolve().then((function(){var i=a._parse(r);return a._loader=a._getLoader(i),a._loader.importMeshAsync(e,t,i,n,o)}))},n.prototype.loadAsync=function(e,t,r,n){var o=this;return Promise.resolve().then((function(){var a=o._parse(t);return o._loader=o._getLoader(a),o._loader.loadAsync(e,a,r,n)}))},n.prototype.loadAssetContainerAsync=function(t,r,n,o){var a=this;return Promise.resolve().then((function(){var i=a._parse(r);return a._loader=a._getLoader(i),a._loader.importMeshAsync(null,t,i,n,o).then((function(r){var n=new e.AssetContainer(t);return Array.prototype.push.apply(n.meshes,r.meshes),Array.prototype.push.apply(n.particleSystems,r.particleSystems),Array.prototype.push.apply(n.skeletons,r.skeletons),n.removeAllFromScene(),n}))}))},n.prototype.canDirectLoad=function(e){return e.indexOf("scene")!==-1&&e.indexOf("node")!==-1},n.prototype.createPlugin=function(){return new n},n.prototype._parse=function(e){var t;return t=e instanceof ArrayBuffer?n._parseBinary(e):{json:JSON.parse(e),bin:null},this.onParsedObservable.notifyObservers(t),this.onParsedObservable.clear(),t},n.prototype._getLoader=function(e){var t=this,r={major:2,minor:0},o=e.json.asset||{},a=n._parseVersion(o.version);if(!a)throw new Error("Invalid version: "+o.version);if(void 0!==o.minVersion){var i=n._parseVersion(o.minVersion);if(!i)throw new Error("Invalid minimum version: "+o.minVersion);if(n._compareVersion(i,r)>0)throw new Error("Incompatible minimum version: "+o.minVersion)}var s={1:n.CreateGLTFLoaderV1,2:n.CreateGLTFLoaderV2},l=s[a.major];if(!l)throw new Error("Unsupported version: "+o.version);var u=l();return u.coordinateSystemMode=this.coordinateSystemMode,u.animationStartMode=this.animationStartMode,u.compileMaterials=this.compileMaterials,u.useClipPlane=this.useClipPlane,u.compileShadowGenerators=this.compileShadowGenerators,u.onMeshLoadedObservable.add((function(e){return t.onMeshLoadedObservable.notifyObservers(e)})),u.onTextureLoadedObservable.add((function(e){return t.onTextureLoadedObservable.notifyObservers(e)})),u.onMaterialLoadedObservable.add((function(e){return t.onMaterialLoadedObservable.notifyObservers(e)})),u.onExtensionLoadedObservable.add((function(e){return t.onExtensionLoadedObservable.notifyObservers(e)})),u.onCompleteObservable.add((function(){t.onMeshLoadedObservable.clear(),t.onTextureLoadedObservable.clear(),t.onMaterialLoadedObservable.clear(),t.onCompleteObservable.notifyObservers(t),t.onCompleteObservable.clear()})),u},n._parseBinary=function(e){var t={Magic:1179937895},r=new o(e),a=r.readUint32();if(a!==t.Magic)throw new Error("Unexpected magic: "+a);var i=r.readUint32();switch(i){case 1:return n._parseV1(r);case 2:return n._parseV2(r)}throw new Error("Unsupported version: "+i)},n._parseV1=function(e){var t={JSON:0},r=e.readUint32();if(r!=e.getLength())throw new Error("Length in header does not match actual data length: "+r+" != "+e.getLength());var o,a=e.readUint32(),i=e.readUint32();switch(i){case t.JSON:o=JSON.parse(n._decodeBufferToText(e.readUint8Array(a)));break;default:throw new Error("Unexpected content format: "+i)}var s=e.getLength()-e.getPosition();return{json:o,bin:e.readUint8Array(s)}},n._parseV2=function(e){var 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e.extensions&&c(e.extensions,"extensions",n),e.extensionsUsed&&c(e.extensionsUsed,"extensionsUsed",n),e.buffers&&l(e.buffers,n),e.bufferViews&&c(e.bufferViews,"bufferViews",n),e.accessors&&c(e.accessors,"accessors",n),e.meshes&&c(e.meshes,"meshes",n),e.lights&&c(e.lights,"lights",n),e.cameras&&c(e.cameras,"cameras",n),e.nodes&&c(e.nodes,"nodes",n),e.images&&c(e.images,"images",n),e.textures&&c(e.textures,"textures",n),e.shaders&&u(e.shaders,n),e.programs&&c(e.programs,"programs",n),e.samplers&&c(e.samplers,"samplers",n),e.techniques&&c(e.techniques,"techniques",n),e.materials&&c(e.materials,"materials",n),e.animations&&c(e.animations,"animations",n),e.skins&&c(e.skins,"skins",n),e.scenes&&(n.scenes=e.scenes),e.scene&&e.scenes&&(n.currentScene=e.scenes[e.scene]),n},i.LoadBufferAsync=function(t,r,n,o,a){var i=t.buffers[r];e.Tools.IsBase64(i.uri)?setTimeout((function(){return n(new Uint8Array(e.Tools.DecodeBase64(i.uri)))})):e.Tools.LoadFile(t.rootUrl+i.uri,(function(e){return n(new 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e.Texture(f,r.scene,!u,!0,c,h,h);void 0!==l.wrapS&&(p.wrapU=t.GLTFUtils.GetWrapMode(l.wrapS)),void 0!==l.wrapT&&(p.wrapV=t.GLTFUtils.GetWrapMode(l.wrapT)),p.name=n,s.babylonTexture=p,a(p)},i.LoadShaderStringAsync=function(t,r,n,o){var a=t.shaders[r];if(e.Tools.IsBase64(a.uri)){n(atob(a.uri.split(",")[1]))}else e.Tools.LoadFile(t.rootUrl+a.uri,n,void 0,void 0,!1,(function(e){e&&o(e.status+" "+e.statusText)}))},i.LoadMaterialAsync=function(i,s,l,u){var c=i.materials[s];if(!c.technique)return void(u&&u("No technique found."));var d=i.techniques[c.technique];if(!d){var h=new e.StandardMaterial(s,i.scene);return h.diffuseColor=new e.Color3(.5,.5,.5),h.sideOrientation=e.Material.CounterClockWiseSideOrientation,void l(h)}var p=i.programs[d.program],m=d.states,_=e.Effect.ShadersStore[p.vertexShader+"VertexShader"],y=e.Effect.ShadersStore[p.fragmentShader+"PixelShader"],v="",A="",b=new n(_),T=new n(y),g={},E=[],L=[],x=[];for(var O in d.uniforms){var M=d.uniforms[O],S=d.parameters[M];if(g[O]=S,!S.semantic||S.node||S.source)S.type===t.EParameterType.SAMPLER_2D?x.push(O):E.push(O);else{var I=o.indexOf(S.semantic);I!==-1?(E.push(a[I]),delete g[O]):E.push(O)}}for(var R in d.attributes){var P=d.attributes[R],C=d.parameters[P];C.semantic&&L.push(f(C))}for(;!b.isEnd()&&b.getNextToken();){var B=b.currentToken;if(B===r.IDENTIFIER){var G=!1;for(var R in d.attributes){var P=d.attributes[R],C=d.parameters[P];if(b.currentIdentifier===R&&C.semantic){v+=f(C),G=!0;break}}G||(v+=F(b,d,g))}else v+=b.currentString}for(;!T.isEnd()&&T.getNextToken();){var B=T.currentToken;B===r.IDENTIFIER?A+=F(T,d,g):A+=T.currentString}var V={vertex:p.vertexShader+s,fragment:p.fragmentShader+s},D={attributes:L,uniforms:E,samplers:x,needAlphaBlending:m&&m.enable&&m.enable.indexOf(3042)!==-1};e.Effect.ShadersStore[p.vertexShader+s+"VertexShader"]=v,e.Effect.ShadersStore[p.fragmentShader+s+"PixelShader"]=A;var U=new e.ShaderMaterial(s,i.scene,V,D);if(U.onError=N(p,U,u),U.onCompiled=w(i,U,d,c,g,l),U.sideOrientation=e.Material.CounterClockWiseSideOrientation,m&&m.functions){var k=m.functions;k.cullFace&&k.cullFace[0]!==t.ECullingType.BACK&&(U.backFaceCulling=!1);var j=k.blendFuncSeparate;j&&(j[0]===t.EBlendingFunction.SRC_ALPHA&&j[1]===t.EBlendingFunction.ONE_MINUS_SRC_ALPHA&&j[2]===t.EBlendingFunction.ONE&&j[3]===t.EBlendingFunction.ONE?U.alphaMode=e.Engine.ALPHA_COMBINE:j[0]===t.EBlendingFunction.ONE&&j[1]===t.EBlendingFunction.ONE&&j[2]===t.EBlendingFunction.ZERO&&j[3]===t.EBlendingFunction.ONE?U.alphaMode=e.Engine.ALPHA_ONEONE:j[0]===t.EBlendingFunction.SRC_ALPHA&&j[1]===t.EBlendingFunction.ONE&&j[2]===t.EBlendingFunction.ZERO&&j[3]===t.EBlendingFunction.ONE?U.alphaMode=e.Engine.ALPHA_ADD:j[0]===t.EBlendingFunction.ZERO&&j[1]===t.EBlendingFunction.ONE_MINUS_SRC_COLOR&&j[2]===t.EBlendingFunction.ONE&&j[3]===t.EBlendingFunction.ONE?U.alphaMode=e.Engine.ALPHA_SUBTRACT:j[0]===t.EBlendingFunction.DST_COLOR&&j[1]===t.EBlendingFunction.ZERO&&j[2]===t.EBlendingFunction.ONE&&j[3]===t.EBlendingFunction.ONE?U.alphaMode=e.Engine.ALPHA_MULTIPLY:j[0]===t.EBlendingFunction.SRC_ALPHA&&j[1]===t.EBlendingFunction.ONE_MINUS_SRC_COLOR&&j[2]===t.EBlendingFunction.ONE&&j[3]===t.EBlendingFunction.ONE&&(U.alphaMode=e.Engine.ALPHA_MAXIMIZED))}},i})();t.GLTFLoaderBase=R;var P=(function(){function r(){this.coordinateSystemMode=e.GLTFLoaderCoordinateSystemMode.AUTO,this.animationStartMode=e.GLTFLoaderAnimationStartMode.FIRST,this.compileMaterials=!1,this.useClipPlane=!1,this.compileShadowGenerators=!1,this.onDisposeObservable=new e.Observable,this.onMeshLoadedObservable=new e.Observable,this.onTextureLoadedObservable=new e.Observable,this.onMaterialLoadedObservable=new e.Observable,this.onAnimationGroupLoadedObservable=new e.Observable,this.onCompleteObservable=new e.Observable,this.onExtensionLoadedObservable=new e.Observable,this.state=null}return r.RegisterExtension=function(t){if(r.Extensions[t.name])return void e.Tools.Error('Tool with the same name "'+t.name+'" already exists');r.Extensions[t.name]=t},r.prototype.dispose=function(){},r.prototype._importMeshAsync=function(r,n,o,a,i,s,l){var u=this;return n.useRightHandedSystem=!0,t.GLTFLoaderExtension.LoadRuntimeAsync(n,o,a,(function(t){t.importOnlyMeshes=!0,""===r?t.importMeshesNames=[]:"string"==typeof r?t.importMeshesNames=[r]:!r||r instanceof Array?(t.importMeshesNames=[],e.Tools.Warn("Argument meshesNames must be of type string or string[]")):t.importMeshesNames=[r],u._createNodes(t);var n=new Array,o=new Array;for(var a in t.nodes){var l=t.nodes[a];l.babylonNode instanceof e.AbstractMesh&&n.push(l.babylonNode)}for(var c in t.skins){var d=t.skins[c];d.babylonSkeleton instanceof e.Skeleton&&o.push(d.babylonSkeleton)}u._loadBuffersAsync(t,(function(){u._loadShadersAsync(t,(function(){I(t),O(t),!e.GLTFFileLoader.IncrementalLoading&&i&&i(n,[],o)}))}),s),e.GLTFFileLoader.IncrementalLoading&&i&&i(n,[],o)}),l),!0},r.prototype.importMeshAsync=function(e,t,r,n,o){var a=this;return new Promise(function(i,s){a._importMeshAsync(e,t,r,n,(function(e,t,r){i({meshes:e,particleSystems:t,skeletons:r})}),o,(function(e){s(new Error(e))}))})},r.prototype._loadAsync=function(r,n,o,a,i,s){var l=this;r.useRightHandedSystem=!0,t.GLTFLoaderExtension.LoadRuntimeAsync(r,n,o,(function(r){t.GLTFLoaderExtension.LoadRuntimeExtensionsAsync(r,(function(){l._createNodes(r),l._loadBuffersAsync(r,(function(){l._loadShadersAsync(r,(function(){I(r),O(r),e.GLTFFileLoader.IncrementalLoading||a()}))})),e.GLTFFileLoader.IncrementalLoading&&a()}),s)}),s)},r.prototype.loadAsync=function(e,t,r,n){var o=this;return new Promise(function(a,i){o._loadAsync(e,t,r,(function(){a()}),n,(function(e){i(new Error(e))}))})},r.prototype._loadShadersAsync=function(r,n){var o=!1,a=function(o,a){t.GLTFLoaderExtension.LoadShaderStringAsync(r,o,(function(i){r.loadedShaderCount++,i&&(e.Effect.ShadersStore[o+(a.type===t.EShaderType.VERTEX?"VertexShader":"PixelShader")]=i),r.loadedShaderCount===r.shaderscount&&n()}),(function(){e.Tools.Error("Error when loading shader program named "+o+" located at "+a.uri)}))};for(var i in r.shaders){o=!0;var s=r.shaders[i];s?a.bind(this,i,s)():e.Tools.Error("No shader named: "+i)}o||n()},r.prototype._loadBuffersAsync=function(r,n,o){var a=!1,i=function(o,a){t.GLTFLoaderExtension.LoadBufferAsync(r,o,(function(t){r.loadedBufferCount++,t&&(t.byteLength!=r.buffers[o].byteLength&&e.Tools.Error("Buffer named "+o+" is length "+t.byteLength+". Expected: "+a.byteLength),r.loadedBufferViews[o]=t),r.loadedBufferCount===r.buffersCount&&n()}),(function(){e.Tools.Error("Error when loading buffer named "+o+" located at "+a.uri)}))};for(var s in r.buffers){a=!0;var l=r.buffers[s];l?i.bind(this,s,l)():e.Tools.Error("No buffer named: "+s)}a||n()},r.prototype._createNodes=function(e){var t=e.currentScene;if(t)for(var r=0;r<t.nodes.length;r++)x(e,t.nodes[r],null);else for(var n in e.scenes){t=e.scenes[n];for(var r=0;r<t.nodes.length;r++)x(e,t.nodes[r],null)}},r.Extensions={},r})();t.GLTFLoader=P,e.GLTFFileLoader.CreateGLTFLoaderV1=function(){return new P}})(e.GLTF1||(e.GLTF1={}))})(e||(e={}));var e;!(function(e){!(function(t){var r=(function(){function r(){}return r.SetMatrix=function(r,n,o,a,i){var s=null;if("MODEL"===o.semantic?s=n.getWorldMatrix():"PROJECTION"===o.semantic?s=r.getProjectionMatrix():"VIEW"===o.semantic?s=r.getViewMatrix():"MODELVIEWINVERSETRANSPOSE"===o.semantic?s=e.Matrix.Transpose(n.getWorldMatrix().multiply(r.getViewMatrix()).invert()):"MODELVIEW"===o.semantic?s=n.getWorldMatrix().multiply(r.getViewMatrix()):"MODELVIEWPROJECTION"===o.semantic?s=n.getWorldMatrix().multiply(r.getTransformMatrix()):"MODELINVERSE"===o.semantic?s=n.getWorldMatrix().invert():"VIEWINVERSE"===o.semantic?s=r.getViewMatrix().invert():"PROJECTIONINVERSE"===o.semantic?s=r.getProjectionMatrix().invert():"MODELVIEWINVERSE"===o.semantic?s=n.getWorldMatrix().multiply(r.getViewMatrix()).invert():"MODELVIEWPROJECTIONINVERSE"===o.semantic?s=n.getWorldMatrix().multiply(r.getTransformMatrix()).invert():"MODELINVERSETRANSPOSE"===o.semantic&&(s=e.Matrix.Transpose(n.getWorldMatrix().invert())),s)switch(o.type){case t.EParameterType.FLOAT_MAT2:i.setMatrix2x2(a,e.Matrix.GetAsMatrix2x2(s));break;case t.EParameterType.FLOAT_MAT3:i.setMatrix3x3(a,e.Matrix.GetAsMatrix3x3(s));break;case t.EParameterType.FLOAT_MAT4:i.setMatrix(a,s)}},r.SetUniform=function(r,n,o,a){switch(a){case t.EParameterType.FLOAT:return r.setFloat(n,o),!0;case t.EParameterType.FLOAT_VEC2:return r.setVector2(n,e.Vector2.FromArray(o)),!0;case t.EParameterType.FLOAT_VEC3:return r.setVector3(n,e.Vector3.FromArray(o)),!0;case t.EParameterType.FLOAT_VEC4:return r.setVector4(n,e.Vector4.FromArray(o)),!0;default:return!1}},r.GetWrapMode=function(r){switch(r){case t.ETextureWrapMode.CLAMP_TO_EDGE:return e.Texture.CLAMP_ADDRESSMODE;case t.ETextureWrapMode.MIRRORED_REPEAT:return e.Texture.MIRROR_ADDRESSMODE;case t.ETextureWrapMode.REPEAT:default:return e.Texture.WRAP_ADDRESSMODE}},r.GetByteStrideFromType=function(e){switch(e.type){case"VEC2":return 2;case"VEC3":return 3;case"VEC4":case"MAT2":return 4;case"MAT3":return 9;case"MAT4":return 16;default:return 1}},r.GetTextureFilterMode=function(r){switch(r){case t.ETextureFilterType.LINEAR:case t.ETextureFilterType.LINEAR_MIPMAP_NEAREST:case t.ETextureFilterType.LINEAR_MIPMAP_LINEAR:return e.Texture.TRILINEAR_SAMPLINGMODE;case t.ETextureFilterType.NEAREST:case t.ETextureFilterType.NEAREST_MIPMAP_NEAREST:return e.Texture.NEAREST_SAMPLINGMODE;default:return e.Texture.BILINEAR_SAMPLINGMODE}},r.GetBufferFromBufferView=function(e,r,n,o,a){var n=r.byteOffset+n,i=e.loadedBufferViews[r.buffer];if(n+o>i.byteLength)throw new Error("Buffer access is out of range");var s=i.buffer;switch(n+=i.byteOffset,a){case t.EComponentType.BYTE:return new Int8Array(s,n,o);case t.EComponentType.UNSIGNED_BYTE:return new Uint8Array(s,n,o);case t.EComponentType.SHORT:return new Int16Array(s,n,o);case t.EComponentType.UNSIGNED_SHORT:return new Uint16Array(s,n,o);default:return new Float32Array(s,n,o)}},r.GetBufferFromAccessor=function(e,t){var n=e.bufferViews[t.bufferView],o=t.count*r.GetByteStrideFromType(t);return r.GetBufferFromBufferView(e,n,t.byteOffset,o,t.componentType)},r.DecodeBufferToText=function(e){for(var t="",r=e.byteLength,n=0;n<r;++n)t+=String.fromCharCode(e[n]);return t},r.GetDefaultMaterial=function(t){if(!r._DefaultMaterial){e.Effect.ShadersStore.GLTFDefaultMaterialVertexShader=["precision highp float;","","uniform mat4 worldView;","uniform mat4 projection;","","attribute vec3 position;","","void main(void)","{","    gl_Position = projection * worldView * vec4(position, 1.0);","}"].join("\n"),e.Effect.ShadersStore.GLTFDefaultMaterialPixelShader=["precision highp float;","","uniform vec4 u_emission;","","void main(void)","{","    gl_FragColor = u_emission;","}"].join("\n");var n={vertex:"GLTFDefaultMaterial",fragment:"GLTFDefaultMaterial"},o={attributes:["position"],uniforms:["worldView","projection","u_emission"],samplers:new Array,needAlphaBlending:!1};r._DefaultMaterial=new e.ShaderMaterial("GLTFDefaultMaterial",t,n,o),r._DefaultMaterial.setColor4("u_emission",new e.Color4(.5,.5,.5,1))}return r._DefaultMaterial},r._DefaultMaterial=null,r})();t.GLTFUtils=r})(e.GLTF1||(e.GLTF1={}))})(e||(e={}));var e;!(function(e){!(function(e){var t=(function(){function t(e){this._name=e}return Object.defineProperty(t.prototype,"name",{get:function(){return this._name},enumerable:!0,configurable:!0}),t.prototype.loadRuntimeAsync=function(e,t,r,n,o){return!1},t.prototype.loadRuntimeExtensionsAsync=function(e,t,r){return!1},t.prototype.loadBufferAsync=function(e,t,r,n,o){return!1},t.prototype.loadTextureBufferAsync=function(e,t,r,n){return!1},t.prototype.createTextureAsync=function(e,t,r,n,o){return!1},t.prototype.loadShaderStringAsync=function(e,t,r,n){return!1},t.prototype.loadMaterialAsync=function(e,t,r,n){return!1},t.LoadRuntimeAsync=function(r,n,o,a,i){t.ApplyExtensions((function(e){return 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e.loadMaterialAsync(r,n,o,a)}),(function(){e.GLTFLoaderBase.LoadMaterialAsync(r,n,o,a)}))},t.LoadTextureBufferAsync=function(r,n,o,a){t.ApplyExtensions((function(e){return e.loadTextureBufferAsync(r,n,o,a)}),(function(){e.GLTFLoaderBase.LoadTextureBufferAsync(r,n,o,a)}))},t.CreateTextureAsync=function(r,n,o,a,i){t.ApplyExtensions((function(e){return e.createTextureAsync(r,n,o,a,i)}),(function(){e.GLTFLoaderBase.CreateTextureAsync(r,n,o,a,i)}))},t.ApplyExtensions=function(t,r){for(var n in e.GLTFLoader.Extensions){if(t(e.GLTFLoader.Extensions[n]))return}r()},t})();e.GLTFLoaderExtension=t})(e.GLTF1||(e.GLTF1={}))})(e||(e={}));var e;!(function(e){!(function(e){var t=(function(t){function r(){return t.call(this,"KHR_binary_glTF")||this}return __extends(r,t),r.prototype.loadRuntimeAsync=function(t,r,n,o,a){var i=r.json.extensionsUsed;return!(!i||i.indexOf(this.name)===-1||!r.bin)&&(this._bin=r.bin,o(e.GLTFLoaderBase.CreateRuntime(r.json,t,n)),!0)},r.prototype.loadBufferAsync=function(e,t,r,n){return e.extensionsUsed.indexOf(this.name)!==-1&&("binary_glTF"===t&&(r(this._bin),!0))},r.prototype.loadTextureBufferAsync=function(t,r,n,o){var a=t.textures[r],i=t.images[a.source];if(!(i.extensions&&this.name in i.extensions))return!1;var s=i.extensions[this.name],l=t.bufferViews[s.bufferView];return n(e.GLTFUtils.GetBufferFromBufferView(t,l,0,l.byteLength,e.EComponentType.UNSIGNED_BYTE)),!0},r.prototype.loadShaderStringAsync=function(t,r,n,o){var a=t.shaders[r];if(!(a.extensions&&this.name in a.extensions))return!1;var i=a.extensions[this.name],s=t.bufferViews[i.bufferView],l=e.GLTFUtils.GetBufferFromBufferView(t,s,0,s.byteLength,e.EComponentType.UNSIGNED_BYTE);return setTimeout((function(){var t=e.GLTFUtils.DecodeBufferToText(l);n(t)})),!0},r})(e.GLTFLoaderExtension);e.GLTFBinaryExtension=t,e.GLTFLoader.RegisterExtension(new t)})(e.GLTF1||(e.GLTF1={}))})(e||(e={}));var e;!(function(e){!(function(t){var r=(function(r){function n(){return r.call(this,"KHR_materials_common")||this}return __extends(n,r),n.prototype.loadRuntimeExtensionsAsync=function(t,r,n){if(!t.extensions)return!1;var o=t.extensions[this.name];if(!o)return!1;var a=o.lights;if(a)for(var i in a){var s=a[i];switch(s.type){case"ambient":var l=new e.HemisphericLight(s.name,new e.Vector3(0,1,0),t.scene),u=s.ambient;u&&(l.diffuse=e.Color3.FromArray(u.color||[1,1,1]));break;case"point":var c=new e.PointLight(s.name,new e.Vector3(10,10,10),t.scene),d=s.point;d&&(c.diffuse=e.Color3.FromArray(d.color||[1,1,1]));break;case"directional":var f=new e.DirectionalLight(s.name,new e.Vector3(0,-1,0),t.scene),h=s.directional;h&&(f.diffuse=e.Color3.FromArray(h.color||[1,1,1]));break;case"spot":var p=s.spot;if(p){var m=new e.SpotLight(s.name,new e.Vector3(0,10,0),new e.Vector3(0,-1,0),p.fallOffAngle||Math.PI,p.fallOffExponent||0,t.scene);m.diffuse=e.Color3.FromArray(p.color||[1,1,1])}break;default:e.Tools.Warn('GLTF Material Common extension: light type "'+s.type+"” not supported")}}return!1},n.prototype.loadMaterialAsync=function(t,r,n,o){var a=t.materials[r];if(!a||!a.extensions)return!1;var i=a.extensions[this.name];if(!i)return!1;var s=new e.StandardMaterial(r,t.scene);return s.sideOrientation=e.Material.CounterClockWiseSideOrientation,"CONSTANT"===i.technique&&(s.disableLighting=!0),s.backFaceCulling=void 0!==i.doubleSided&&!i.doubleSided,s.alpha=void 0===i.values.transparency?1:i.values.transparency,s.specularPower=void 0===i.values.shininess?0:i.values.shininess,"string"==typeof i.values.ambient?this._loadTexture(t,i.values.ambient,s,"ambientTexture",o):s.ambientColor=e.Color3.FromArray(i.values.ambient||[0,0,0]),"string"==typeof i.values.diffuse?this._loadTexture(t,i.values.diffuse,s,"diffuseTexture",o):s.diffuseColor=e.Color3.FromArray(i.values.diffuse||[0,0,0]),"string"==typeof i.values.emission?this._loadTexture(t,i.values.emission,s,"emissiveTexture",o):s.emissiveColor=e.Color3.FromArray(i.values.emission||[0,0,0]),"string"==typeof i.values.specular?this._loadTexture(t,i.values.specular,s,"specularTexture",o):s.specularColor=e.Color3.FromArray(i.values.specular||[0,0,0]),!0},n.prototype._loadTexture=function(e,r,n,o,a){t.GLTFLoaderBase.LoadTextureBufferAsync(e,r,(function(i){t.GLTFLoaderBase.CreateTextureAsync(e,r,i,(function(e){return n[o]=e}),a)}),a)},n})(t.GLTFLoaderExtension);t.GLTFMaterialsCommonExtension=r,t.GLTFLoader.RegisterExtension(new r)})(e.GLTF1||(e.GLTF1={}))})(e||(e={}));var e;!(function(e){!(function(e){var t=(function(){function e(){}return e.Assign=function(e){if(e)for(var t=0;t<e.length;t++)e[t]._index=t},e})();e.ArrayItem=t})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;!(function(e){!(function(t){var r=(function(){function r(){this._completePromises=new Array,this._disposed=!1,this._state=null,this._extensions={},this._defaultSampler={},this._requests=new Array,this.coordinateSystemMode=e.GLTFLoaderCoordinateSystemMode.AUTO,this.animationStartMode=e.GLTFLoaderAnimationStartMode.FIRST,this.compileMaterials=!1,this.useClipPlane=!1,this.compileShadowGenerators=!1,this.onDisposeObservable=new e.Observable,this.onMeshLoadedObservable=new e.Observable,this.onTextureLoadedObservable=new e.Observable,this.onMaterialLoadedObservable=new e.Observable,this.onAnimationGroupLoadedObservable=new e.Observable,this.onExtensionLoadedObservable=new e.Observable,this.onCompleteObservable=new e.Observable}return r._Register=function(t,n){if(r._Factories[t])return void e.Tools.Error("Extension with the name '"+t+"' already exists");r._Factories[t]=n,r._Names.push(t)},Object.defineProperty(r.prototype,"state",{get:function(){return this._state},enumerable:!0,configurable:!0}),r.prototype.dispose=function(){this._disposed||(this._disposed=!0,this.onDisposeObservable.notifyObservers(this),this.onDisposeObservable.clear(),this._clear())},r.prototype.importMeshAsync=function(e,t,r,n,o){var a=this;return Promise.resolve().then((function(){var i=null;if(e){var s={};if(a._gltf.nodes)for(var l=0,u=a._gltf.nodes;l<u.length;l++){var c=u[l];c.name&&(s[c.name]=c)}i=(e instanceof Array?e:[e]).map((function(e){var t=s[e];if(!t)throw new Error("Failed to find node '"+e+"'");return t}))}return a._loadAsync(i,t,r,n,o).then((function(){return{meshes:a._getMeshes(),particleSystems:[],skeletons:a._getSkeletons()}}))}))},r.prototype.loadAsync=function(e,t,r,n){return this._loadAsync(null,e,t,r,n)},r.prototype._loadAsync=function(t,n,o,a,i){var s=this;return Promise.resolve().then((function(){s._loadExtensions(),s._babylonScene=n,s._rootUrl=a,s._progressCallback=i,s._state=e.GLTFLoaderState.Loading,s._loadData(o),s._checkExtensions();var l=new Array;if(t)l.push(s._loadNodesAsync(t));else{var u=r._GetProperty("#/scene",s._gltf.scenes,s._gltf.scene||0);l.push(s._loadSceneAsync("#/scenes/"+u._index,u))}s.compileMaterials&&l.push(s._compileMaterialsAsync()),s.compileShadowGenerators&&l.push(s._compileShadowGeneratorsAsync());var c=Promise.all(l).then((function(){s._state=e.GLTFLoaderState.Ready,s._startAnimations()}));return c.then((function(){s._rootBabylonMesh.setEnabled(!0),e.Tools.SetImmediate((function(){s._disposed||Promise.all(s._completePromises).then((function(){s._state=e.GLTFLoaderState.Complete,s.onCompleteObservable.notifyObservers(s),s.onCompleteObservable.clear(),s._clear()})).catch((function(t){e.Tools.Error("glTF Loader: "+t.message),s._clear()}))}))})),c})).catch((function(t){throw e.Tools.Error("glTF Loader: "+t.message),s._clear(),t}))},r.prototype._loadExtensions=function(){for(var e=0,t=r._Names;e<t.length;e++){var n=t[e],o=r._Factories[n](this);this._extensions[n]=o,this.onExtensionLoadedObservable.notifyObservers(o)}this.onExtensionLoadedObservable.clear()},r.prototype._loadData=function(t){if(this._gltf=t.json,this._setupData(),t.bin){var r=this._gltf.buffers;if(r&&r[0]&&!r[0].uri){var n=r[0];(n.byteLength<t.bin.byteLength-3||n.byteLength>t.bin.byteLength)&&e.Tools.Warn("Binary buffer length ("+n.byteLength+") from JSON does not match chunk length ("+t.bin.byteLength+")"),n._data=Promise.resolve(t.bin)}else e.Tools.Warn("Unexpected BIN chunk")}},r.prototype._setupData=function(){if(t.ArrayItem.Assign(this._gltf.accessors),t.ArrayItem.Assign(this._gltf.animations),t.ArrayItem.Assign(this._gltf.buffers),t.ArrayItem.Assign(this._gltf.bufferViews),t.ArrayItem.Assign(this._gltf.cameras),t.ArrayItem.Assign(this._gltf.images),t.ArrayItem.Assign(this._gltf.materials),t.ArrayItem.Assign(this._gltf.meshes),t.ArrayItem.Assign(this._gltf.nodes),t.ArrayItem.Assign(this._gltf.samplers),t.ArrayItem.Assign(this._gltf.scenes),t.ArrayItem.Assign(this._gltf.skins),t.ArrayItem.Assign(this._gltf.textures),this._gltf.nodes){for(var e={},r=0,n=this._gltf.nodes;r<n.length;r++){var o=n[r];if(o.children)for(var a=0,i=o.children;a<i.length;a++){var s=i[a];e[s]=o._index}}for(var l=this._createRootNode(),u=0,c=this._gltf.nodes;u<c.length;u++){var o=c[u],d=e[o._index];o._parent=void 0===d?l:this._gltf.nodes[d]}}},r.prototype._checkExtensions=function(){if(this._gltf.extensionsRequired)for(var e=0,t=this._gltf.extensionsRequired;e<t.length;e++){var r=t[e],n=this._extensions[r];if(!n||!n.enabled)throw new Error("Require extension "+r+" is not available")}},r.prototype._createRootNode=function(){this._rootBabylonMesh=new e.Mesh("__root__",this._babylonScene),this._rootBabylonMesh.setEnabled(!1);var t={_babylonMesh:this._rootBabylonMesh};switch(this.coordinateSystemMode){case e.GLTFLoaderCoordinateSystemMode.AUTO:this._babylonScene.useRightHandedSystem||(t.rotation=[0,1,0,0],t.scale=[1,1,-1],r._LoadTransform(t,this._rootBabylonMesh));break;case e.GLTFLoaderCoordinateSystemMode.FORCE_RIGHT_HANDED:this._babylonScene.useRightHandedSystem=!0;break;default:throw new Error("Invalid coordinate system mode ("+this.coordinateSystemMode+")")}return this.onMeshLoadedObservable.notifyObservers(this._rootBabylonMesh),t},r.prototype._loadNodesAsync=function(e){for(var t=new Array,r=0,n=e;r<n.length;r++){var o=n[r];t.push(this._loadNodeAsync("#/nodes/"+o._index,o))}return t.push(this._loadAnimationsAsync()),Promise.all(t).then((function(){}))},r.prototype._loadSceneAsync=function(e,n){var o=t.GLTFLoaderExtension._LoadSceneAsync(this,e,n);if(o)return o;for(var a=new Array,i=0,s=n.nodes;i<s.length;i++){var l=s[i],u=r._GetProperty(e+"/nodes/"+l,this._gltf.nodes,l);a.push(this._loadNodeAsync("#/nodes/"+u._index,u))}return a.push(this._loadAnimationsAsync()),Promise.all(a).then((function(){}))},r.prototype._forEachNodeMesh=function(e,t){if(e._babylonMesh&&t(e._babylonMesh),e._primitiveBabylonMeshes)for(var r=0,n=e._primitiveBabylonMeshes;r<n.length;r++){var o=n[r];t(o)}},r.prototype._getMeshes=function(){var e=new Array;e.push(this._rootBabylonMesh);var t=this._gltf.nodes;if(t)for(var r=0,n=t;r<n.length;r++){var o=n[r];this._forEachNodeMesh(o,(function(t){e.push(t)}))}return e},r.prototype._getSkeletons=function(){var e=new Array,t=this._gltf.skins;if(t)for(var r=0,n=t;r<n.length;r++){var o=n[r];o._babylonSkeleton&&e.push(o._babylonSkeleton)}return e},r.prototype._startAnimations=function(){var t=this._gltf.animations;if(t)switch(this.animationStartMode){case e.GLTFLoaderAnimationStartMode.NONE:break;case e.GLTFLoaderAnimationStartMode.FIRST:var r=t[0];r._babylonAnimationGroup.start(!0);break;case e.GLTFLoaderAnimationStartMode.ALL:for(var n=0,o=t;n<o.length;n++){var r=o[n];r._babylonAnimationGroup.start(!0)}break;default:return void e.Tools.Error("Invalid animation start mode ("+this.animationStartMode+")")}},r.prototype._loadNodeAsync=function(n,o){var a=t.GLTFLoaderExtension._LoadNodeAsync(this,n,o);if(a)return a;if(o._babylonMesh)throw new Error(n+": Invalid recursive node hierarchy");var i=new Array,s=new e.Mesh(o.name||"node"+o._index,this._babylonScene,o._parent._babylonMesh);if(o._babylonMesh=s,o._babylonAnimationTargets=o._babylonAnimationTargets||[],o._babylonAnimationTargets.push(s),r._LoadTransform(o,s),void 0!=o.mesh){var l=r._GetProperty(n+"/mesh",this._gltf.meshes,o.mesh);i.push(this._loadMeshAsync("#/meshes/"+l._index,o,l,s))}if(o.children)for(var u=0,c=o.children;u<c.length;u++){var d=c[u],f=r._GetProperty(n+"/children/"+d,this._gltf.nodes,d);i.push(this._loadNodeAsync("#/nodes/"+d,f))}return this.onMeshLoadedObservable.notifyObservers(s),Promise.all(i).then((function(){}))},r.prototype._loadMeshAsync=function(n,o,a,i){var s=this,l=new Array,u=a.primitives;if(!u||0===u.length)throw new Error(n+": Primitives are missing");if(t.ArrayItem.Assign(u),1===u.length){var c=u[0];l.push(this._loadPrimitiveAsync(n+"/primitives/"+c._index,o,a,c,i))}else{o._primitiveBabylonMeshes=[];for(var d=0,f=u;d<f.length;d++){var c=f[d],h=new e.Mesh((a.name||i.name)+"_"+c._index,this._babylonScene,i);o._primitiveBabylonMeshes.push(i),l.push(this._loadPrimitiveAsync(n+"/primitives/"+c._index,o,a,c,h)),this.onMeshLoadedObservable.notifyObservers(i)}}if(void 0!=o.skin){var p=r._GetProperty(n+"/skin",this._gltf.skins,o.skin);l.push(this._loadSkinAsync("#/skins/"+p._index,o,a,p))}return Promise.all(l).then((function(){s._forEachNodeMesh(o,(function(e){e._refreshBoundingInfo(!0)}))}))},r.prototype._loadPrimitiveAsync=function(t,n,o,a,i){var s=this,l=new Array;if(this._createMorphTargets(t,n,o,a,i),l.push(this._loadVertexDataAsync(t,a,i).then((function(r){return new e.Geometry(i.name,s._babylonScene,r,!1,i),s._loadMorphTargetsAsync(t,a,i,r)}))),void 0==a.material)i.material=this._getDefaultMaterial();else{var u=r._GetProperty(t+"/material}",this._gltf.materials,a.material);l.push(this._loadMaterialAsync("#/materials/"+u._index,u,i,(function(e){i.material=e})))}return Promise.all(l).then((function(){}))},r.prototype._loadVertexDataAsync=function(n,o,a){var i=this,s=t.GLTFLoaderExtension._LoadVertexDataAsync(this,n,o,a);if(s)return s;var l=o.attributes;if(!l)throw new Error(n+": Attributes are missing");if(void 0!=o.mode&&4!==o.mode)throw new Error(n+": Mode ("+o.mode+") is not currently supported");var u=new Array,c=new e.VertexData;if(void 0==o.indices){var d=l.POSITION;if(void 0!=d){var f=r._GetProperty(n+"/attributes/POSITION",this._gltf.accessors,d);c.indices=new Uint32Array(f.count);for(var h=0;h<c.indices.length;h++)c.indices[h]=h}}else{var p=r._GetProperty(n+"/indices",this._gltf.accessors,o.indices);u.push(this._loadAccessorAsync("#/accessors/"+p._index,p).then((function(e){c.indices=e})))}var m=function(e,t){if(void 0!=l[e]){a._delayInfo=a._delayInfo||[],a._delayInfo.indexOf(t)===-1&&a._delayInfo.push(t)
;var o=r._GetProperty(n+"/attributes/"+e,i._gltf.accessors,l[e]);u.push(i._loadAccessorAsync("#/accessors/"+o._index,o).then((function(i){var s=r._ConvertToFloat32Array(n,o,i);"COLOR_0"===e&&(a.hasVertexAlpha=!0,"VEC3"===o.type&&(s=r._ConvertVec3ToVec4(n,s))),c.set(s,t)})))}};return m("POSITION",e.VertexBuffer.PositionKind),m("NORMAL",e.VertexBuffer.NormalKind),m("TANGENT",e.VertexBuffer.TangentKind),m("TEXCOORD_0",e.VertexBuffer.UVKind),m("TEXCOORD_1",e.VertexBuffer.UV2Kind),m("JOINTS_0",e.VertexBuffer.MatricesIndicesKind),m("WEIGHTS_0",e.VertexBuffer.MatricesWeightsKind),m("COLOR_0",e.VertexBuffer.ColorKind),Promise.all(u).then((function(){return c}))},r.prototype._createMorphTargets=function(t,r,n,o,a){if(o.targets){if(void 0==r._numMorphTargets)r._numMorphTargets=o.targets.length;else if(o.targets.length!==r._numMorphTargets)throw new Error(t+": Primitives do not have the same number of targets");a.morphTargetManager=new e.MorphTargetManager;for(var i=0;i<o.targets.length;i++){var s=r.weights?r.weights[i]:n.weights?n.weights[i]:0;a.morphTargetManager.addTarget(new e.MorphTarget("morphTarget"+i,s))}}},r.prototype._loadMorphTargetsAsync=function(e,t,r,n){if(!t.targets)return Promise.resolve();for(var o=new Array,a=r.morphTargetManager,i=0;i<a.numTargets;i++){var s=a.getTarget(i);o.push(this._loadMorphTargetVertexDataAsync(e+"/targets/"+i,n,t.targets[i],s))}return Promise.all(o).then((function(){}))},r.prototype._loadMorphTargetVertexDataAsync=function(e,t,n,o){var a=this,i=new Array,s=function(t,o){if(void 0!=n[t]){var s=r._GetProperty(e+"/"+t,a._gltf.accessors,n[t]);i.push(a._loadAccessorAsync("#/accessors/"+s._index,s).then((function(e){o(e)})))}};return s("POSITION",(function(e){if(t.positions){for(var r=0;r<e.length;r++)e[r]+=t.positions[r];o.setPositions(e)}})),s("NORMAL",(function(e){if(t.normals){for(var r=0;r<e.length;r++)e[r]+=t.normals[r];o.setNormals(e)}})),s("TANGENT",(function(e){if(t.tangents){for(var r=0,n=0;r<e.length;r++)e[r]+=t.tangents[n++],(r+1)%3==0&&n++;o.setTangents(e)}})),Promise.all(i).then((function(){}))},r._ConvertToFloat32Array=function(e,t,n){if(5126==t.componentType)return n;var o=1;if(t.normalized)switch(t.componentType){case 5121:o=1/255;break;case 5123:o=1/65535;break;default:throw new Error(e+": Invalid component type ("+t.componentType+")")}for(var a=new Float32Array(t.count*r._GetNumComponents(e,t.type)),i=0;i<a.length;i++)a[i]=n[i]*o;return a},r._ConvertVec3ToVec4=function(e,t){for(var r=new Float32Array(t.length/3*4),n=0,o=0;o<r.length;o++)r[o]=(o+1)%4==0?1:t[n++];return r},r._LoadTransform=function(t,r){var n=e.Vector3.Zero(),o=e.Quaternion.Identity(),a=e.Vector3.One();if(t.matrix){e.Matrix.FromArray(t.matrix).decompose(a,o,n)}else t.translation&&(n=e.Vector3.FromArray(t.translation)),t.rotation&&(o=e.Quaternion.FromArray(t.rotation)),t.scale&&(a=e.Vector3.FromArray(t.scale));r.position=n,r.rotationQuaternion=o,r.scaling=a},r.prototype._loadSkinAsync=function(t,r,n,o){var a=this,i=function(){a._forEachNodeMesh(r,(function(e){e.skeleton=o._babylonSkeleton})),r._babylonMesh.parent=a._rootBabylonMesh,r._babylonMesh.position=e.Vector3.Zero(),r._babylonMesh.rotationQuaternion=e.Quaternion.Identity(),r._babylonMesh.scaling=e.Vector3.One()};return o._loaded?o._loaded.then((function(){i()})):o._loaded=this._loadSkinInverseBindMatricesDataAsync(t,o).then((function(r){var n="skeleton"+o._index,s=new e.Skeleton(o.name||n,n,a._babylonScene);o._babylonSkeleton=s,a._loadBones(t,o,r),i()}))},r.prototype._loadSkinInverseBindMatricesDataAsync=function(e,t){if(void 0==t.inverseBindMatrices)return Promise.resolve(null);var n=r._GetProperty(e+"/inverseBindMatrices",this._gltf.accessors,t.inverseBindMatrices);return this._loadAccessorAsync("#/accessors/"+n._index,n).then((function(e){return e}))},r.prototype._createBone=function(t,r,n,o,a,i){var s=new e.Bone(t.name||"joint"+t._index,r._babylonSkeleton,n,o,null,a,i);return t._babylonAnimationTargets=t._babylonAnimationTargets||[],t._babylonAnimationTargets.push(s),s},r.prototype._loadBones=function(e,t,n){for(var o={},a=0,i=t.joints;a<i.length;a++){var s=i[a],l=r._GetProperty(e+"/joints/"+s,this._gltf.nodes,s);this._loadBone(l,t,n,o)}},r.prototype._loadBone=function(t,r,n,o){var a=o[t._index];if(a)return a;var i=r.joints.indexOf(t._index),s=e.Matrix.Identity();n&&i!==-1&&(s=e.Matrix.FromArray(n,16*i),s.invertToRef(s));var l=null;return t._parent._babylonMesh!==this._rootBabylonMesh&&(l=this._loadBone(t._parent,r,n,o),s.multiplyToRef(l.getInvertedAbsoluteTransform(),s)),a=this._createBone(t,r,l,this._getNodeMatrix(t),s,i),o[t._index]=a,a},r.prototype._getNodeMatrix=function(t){return t.matrix?e.Matrix.FromArray(t.matrix):e.Matrix.Compose(t.scale?e.Vector3.FromArray(t.scale):e.Vector3.One(),t.rotation?e.Quaternion.FromArray(t.rotation):e.Quaternion.Identity(),t.translation?e.Vector3.FromArray(t.translation):e.Vector3.Zero())},r.prototype._loadAnimationsAsync=function(){var e=this._gltf.animations;if(!e)return Promise.resolve();for(var t=new Array,r=0;r<e.length;r++){var n=e[r];t.push(this._loadAnimationAsync("#/animations/"+r,n))}return Promise.all(t).then((function(){}))},r.prototype._loadAnimationAsync=function(r,n){var o=new e.AnimationGroup(n.name||"animation"+n._index,this._babylonScene);n._babylonAnimationGroup=o;var a=new Array;t.ArrayItem.Assign(n.channels),t.ArrayItem.Assign(n.samplers);for(var i=0,s=n.channels;i<s.length;i++){var l=s[i];a.push(this._loadAnimationChannelAsync(r+"/channels/"+l._index,r,n,l,o))}return this.onAnimationGroupLoadedObservable.notifyObservers(o),Promise.all(a).then((function(){o.normalize()}))},r.prototype._loadAnimationChannelAsync=function(t,n,o,a,i){var s=this,l=r._GetProperty(t+"/target/node",this._gltf.nodes,a.target.node);if(!l._babylonMesh||void 0!=l.skin)return Promise.resolve();var u=r._GetProperty(t+"/sampler",o.samplers,a.sampler);return this._loadAnimationSamplerAsync(n+"/samplers/"+a.sampler,u).then((function(r){var n,o;switch(a.target.path){case"translation":n="position",o=e.Animation.ANIMATIONTYPE_VECTOR3;break;case"rotation":n="rotationQuaternion",o=e.Animation.ANIMATIONTYPE_QUATERNION;break;case"scale":n="scaling",o=e.Animation.ANIMATIONTYPE_VECTOR3;break;case"weights":n="influence",o=e.Animation.ANIMATIONTYPE_FLOAT;break;default:throw new Error(t+": Invalid target path ("+a.target.path+")")}var u,c=0;switch(n){case"position":u=function(){var t=e.Vector3.FromArray(r.output,c);return c+=3,t};break;case"rotationQuaternion":u=function(){var t=e.Quaternion.FromArray(r.output,c);return c+=4,t};break;case"scaling":u=function(){var t=e.Vector3.FromArray(r.output,c);return c+=3,t};break;case"influence":u=function(){for(var e=new Array(l._numMorphTargets),t=0;t<l._numMorphTargets;t++)e[t]=r.output[c++];return e}}var d;switch(r.interpolation){case"STEP":d=function(t){return{frame:r.input[t],value:u(),interpolation:e.AnimationKeyInterpolation.STEP}};break;case"LINEAR":d=function(e){return{frame:r.input[e],value:u()}};break;case"CUBICSPLINE":d=function(e){return{frame:r.input[e],inTangent:u(),value:u(),outTangent:u()}}}var f;if(1===r.input.length){var h=d(0);f=[{frame:h.frame,value:h.value},{frame:h.frame+1,value:h.value}]}else{f=new Array(r.input.length);for(var p=0;p<r.input.length;p++)f[p]=d(p)}if("influence"===n)for(var m=0;m<l._numMorphTargets;m++)!(function(t){var r=i.name+"_channel"+i.targetedAnimations.length,a=new e.Animation(r,n,1,o);a.setKeys(f.map((function(e){return{frame:e.frame,inTangent:e.inTangent?e.inTangent[t]:void 0,value:e.value[t],outTangent:e.outTangent?e.outTangent[t]:void 0}}))),s._forEachNodeMesh(l,(function(e){var r=e.morphTargetManager.getTarget(t);i.addTargetedAnimation(a,r)}))})(m);else{var _=i.name+"_channel"+i.targetedAnimations.length,y=new e.Animation(_,n,1,o);if(y.setKeys(f),l._babylonAnimationTargets)for(var v=0,A=l._babylonAnimationTargets;v<A.length;v++){var b=A[v];i.addTargetedAnimation(y,b)}}}))},r.prototype._loadAnimationSamplerAsync=function(e,t){if(t._data)return t._data;var n=t.interpolation||"LINEAR";switch(n){case"STEP":case"LINEAR":case"CUBICSPLINE":break;default:throw new Error(e+": Invalid interpolation ("+t.interpolation+")")}var o,a,i=r._GetProperty(e+"/input",this._gltf.accessors,t.input),s=r._GetProperty(e+"/output",this._gltf.accessors,t.output);return t._data=Promise.all([this._loadAccessorAsync("#/accessors/"+i._index,i).then((function(e){o=e})),this._loadAccessorAsync("#/accessors/"+s._index,s).then((function(e){a=e}))]).then((function(){return{input:o,interpolation:n,output:a}})),t._data},r.prototype._loadBufferAsync=function(e,t){if(t._data)return t._data;if(!t.uri)throw new Error(e+": Uri is missing");return t._data=this._loadUriAsync(e,t.uri),t._data},r.prototype._loadBufferViewAsync=function(e,t){if(t._data)return t._data;var n=r._GetProperty(e+"/buffer",this._gltf.buffers,t.buffer);return t._data=this._loadBufferAsync("#/buffers/"+n._index,n).then((function(r){try{return new Uint8Array(r.buffer,r.byteOffset+(t.byteOffset||0),t.byteLength)}catch(t){throw new Error(e+": "+t.message)}})),t._data},r.prototype._loadAccessorAsync=function(t,n){var o=this;if(n.sparse)throw new Error(t+": Sparse accessors are not currently supported");if(n._data)return n._data;var a=r._GetProperty(t+"/bufferView",this._gltf.bufferViews,n.bufferView);return n._data=this._loadBufferViewAsync("#/bufferViews/"+a._index,a).then((function(i){var s=r._GetNumComponents(t,n.type),l=n.byteOffset||0,u=a.byteStride;0===u&&e.Tools.Warn(t+": Byte stride of 0 is not valid");try{switch(n.componentType){case 5120:return o._buildArrayBuffer(Float32Array,i,l,n.count,s,u);case 5121:return o._buildArrayBuffer(Uint8Array,i,l,n.count,s,u);case 5122:return o._buildArrayBuffer(Int16Array,i,l,n.count,s,u);case 5123:return o._buildArrayBuffer(Uint16Array,i,l,n.count,s,u);case 5125:return o._buildArrayBuffer(Uint32Array,i,l,n.count,s,u);case 5126:return o._buildArrayBuffer(Float32Array,i,l,n.count,s,u);default:throw new Error(t+": Invalid component type ("+n.componentType+")")}}catch(e){throw new Error(t+": "+e.messsage)}})),n._data},r.prototype._buildArrayBuffer=function(e,t,r,n,o,a){r+=t.byteOffset;var i=n*o;if(!a||a===o*e.BYTES_PER_ELEMENT)return new e(t.buffer,r,i);for(var s=a/e.BYTES_PER_ELEMENT,l=new e(t.buffer,r,s*n),u=new e(i),c=0,d=0;d<i;){for(var f=0;f<o;f++)u[d]=l[c+f],d++;c+=s}return u},r.prototype._getDefaultMaterial=function(){var t="__gltf_default",r=this._babylonScene.getMaterialByName(t);return r||(r=new e.PBRMaterial(t,this._babylonScene),r.transparencyMode=e.PBRMaterial.PBRMATERIAL_OPAQUE,r.sideOrientation=this._babylonScene.useRightHandedSystem?e.Material.CounterClockWiseSideOrientation:e.Material.ClockWiseSideOrientation,r.metallic=1,r.roughness=1,this.onMaterialLoadedObservable.notifyObservers(r)),r},r.prototype._loadMaterialMetallicRoughnessPropertiesAsync=function(t,r){var n=new Array,o=r._babylonMaterial;o.metallic=1,o.roughness=1;var a=r.pbrMetallicRoughness;return a&&(a.baseColorFactor?(o.albedoColor=e.Color3.FromArray(a.baseColorFactor),o.alpha=a.baseColorFactor[3]):o.albedoColor=e.Color3.White(),o.metallic=void 0==a.metallicFactor?1:a.metallicFactor,o.roughness=void 0==a.roughnessFactor?1:a.roughnessFactor,a.baseColorTexture&&n.push(this._loadTextureAsync(t+"/baseColorTexture",a.baseColorTexture,(function(e){o.albedoTexture=e}))),a.metallicRoughnessTexture&&(n.push(this._loadTextureAsync(t+"/metallicRoughnessTexture",a.metallicRoughnessTexture,(function(e){o.metallicTexture=e}))),o.useMetallnessFromMetallicTextureBlue=!0,o.useRoughnessFromMetallicTextureGreen=!0,o.useRoughnessFromMetallicTextureAlpha=!1)),this._loadMaterialAlphaProperties(t,r),Promise.all(n).then((function(){}))},r.prototype._loadMaterialAsync=function(e,r,n,o){var a=t.GLTFLoaderExtension._LoadMaterialAsync(this,e,r,n,o);if(a)return a;if(r._babylonMeshes=r._babylonMeshes||[],r._babylonMeshes.push(n),!r._loaded){var i=new Array,s=this._createMaterial(r);r._babylonMaterial=s,i.push(this._loadMaterialBasePropertiesAsync(e,r)),i.push(this._loadMaterialMetallicRoughnessPropertiesAsync(e,r)),this.onMaterialLoadedObservable.notifyObservers(s),r._loaded=Promise.all(i).then((function(){}))}return o(r._babylonMaterial),r._loaded},r.prototype._createMaterial=function(t){var r=new e.PBRMaterial(t.name||"material"+t._index,this._babylonScene);return r.sideOrientation=this._babylonScene.useRightHandedSystem?e.Material.CounterClockWiseSideOrientation:e.Material.ClockWiseSideOrientation,r},r.prototype._loadMaterialBasePropertiesAsync=function(t,r){var n=new Array,o=r._babylonMaterial;return o.emissiveColor=r.emissiveFactor?e.Color3.FromArray(r.emissiveFactor):new e.Color3(0,0,0),r.doubleSided&&(o.backFaceCulling=!1,o.twoSidedLighting=!0),r.normalTexture&&(n.push(this._loadTextureAsync(t+"/normalTexture",r.normalTexture,(function(e){o.bumpTexture=e}))),o.invertNormalMapX=!this._babylonScene.useRightHandedSystem,o.invertNormalMapY=this._babylonScene.useRightHandedSystem,void 0!=r.normalTexture.scale&&(o.bumpTexture.level=r.normalTexture.scale)),r.occlusionTexture&&(n.push(this._loadTextureAsync(t+"/occlusionTexture",r.occlusionTexture,(function(e){o.ambientTexture=e}))),o.useAmbientInGrayScale=!0,void 0!=r.occlusionTexture.strength&&(o.ambientTextureStrength=r.occlusionTexture.strength)),r.emissiveTexture&&n.push(this._loadTextureAsync(t+"/emissiveTexture",r.emissiveTexture,(function(e){o.emissiveTexture=e}))),Promise.all(n).then((function(){}))},r.prototype._loadMaterialAlphaProperties=function(t,r){var n=r._babylonMaterial;switch(r.alphaMode||"OPAQUE"){case"OPAQUE":n.transparencyMode=e.PBRMaterial.PBRMATERIAL_OPAQUE;break;case"MASK":n.transparencyMode=e.PBRMaterial.PBRMATERIAL_ALPHATEST,n.alphaCutOff=void 0==r.alphaCutoff?.5:r.alphaCutoff,n.alpha&&(0===n.alpha?n.alphaCutOff=1:n.alphaCutOff/=n.alpha,n.alpha=1),n.albedoTexture&&(n.albedoTexture.hasAlpha=!0);break;case"BLEND":n.transparencyMode=e.PBRMaterial.PBRMATERIAL_ALPHABLEND,n.albedoTexture&&(n.albedoTexture.hasAlpha=!0,n.useAlphaFromAlbedoTexture=!0);break;default:throw new Error(t+": Invalid alpha mode ("+r.alphaMode+")")}},r.prototype._loadTextureAsync=function(t,n,o){var a=this,i=r._GetProperty(t+"/index",this._gltf.textures,n.index);t="#/textures/"+n.index;var s=new Array,l=void 0==i.sampler?this._defaultSampler:r._GetProperty(t+"/sampler",this._gltf.samplers,i.sampler),u=this._loadSampler("#/samplers/"+l._index,l),c=new e.Deferred,d=new e.Texture(null,this._babylonScene,u.noMipMaps,!1,u.samplingMode,function(){a._disposed||c.resolve()},function(e,r){a._disposed||c.reject(new Error(t+": "+(r&&r.message?r.message:e||"Failed to load texture")))});s.push(c.promise),d.name=i.name||"texture"+i._index,d.wrapU=u.wrapU,d.wrapV=u.wrapV,d.coordinatesIndex=n.texCoord||0;var f=r._GetProperty(t+"/source",this._gltf.images,i.source);return s.push(this._loadImageAsync("#/images/"+f._index,f).then((function(e){d.updateURL(e)}))),o(d),this.onTextureLoadedObservable.notifyObservers(d),Promise.all(s).then((function(){}))},r.prototype._loadSampler=function(e,t){return t._data||(t._data={noMipMaps:9728===t.minFilter||9729===t.minFilter,samplingMode:r._GetTextureSamplingMode(e,t.magFilter,t.minFilter),wrapU:r._GetTextureWrapMode(e,t.wrapS),wrapV:r._GetTextureWrapMode(e,t.wrapT)}),t._data},r.prototype._loadImageAsync=function(e,t){if(t._objectURL)return t._objectURL;var n;if(t.uri)n=this._loadUriAsync(e,t.uri);else{var o=r._GetProperty(e+"/bufferView",this._gltf.bufferViews,t.bufferView);n=this._loadBufferViewAsync("#/bufferViews/"+o._index,o)}return t._objectURL=n.then((function(e){return URL.createObjectURL(new Blob([e],{type:t.mimeType}))})),t._objectURL},r.prototype._loadUriAsync=function(n,o){var a=this,i=t.GLTFLoaderExtension._LoadUriAsync(this,n,o);if(i)return i;if(!r._ValidateUri(o))throw new Error(n+": Uri '"+o+"' is invalid");return e.Tools.IsBase64(o)?Promise.resolve(new Uint8Array(e.Tools.DecodeBase64(o))):new Promise(function(t,r){var i=e.Tools.LoadFile(a._rootUrl+o,(function(e){a._disposed||t(new Uint8Array(e))}),(function(t){if(!a._disposed)try{i&&a._state===e.GLTFLoaderState.Loading&&(i._lengthComputable=t.lengthComputable,i._loaded=t.loaded,i._total=t.total,a._onProgress())}catch(e){r(e)}}),a._babylonScene.database,!0,(function(t,i){a._disposed||r(new e.LoadFileError(n+": Failed to load '"+o+"'"+(t?": "+t.status+" "+t.statusText:""),t))}));a._requests.push(i)})},r.prototype._onProgress=function(){if(this._progressCallback){for(var t=!0,r=0,n=0,o=0,a=this._requests;o<a.length;o++){var i=a[o];if(void 0===i._lengthComputable||void 0===i._loaded||void 0===i._total)return;t=t&&i._lengthComputable,r+=i._loaded,n+=i._total}this._progressCallback(new e.SceneLoaderProgressEvent(t,r,t?n:0))}},r._GetProperty=function(e,t,r){if(!t||void 0==r||!t[r])throw new Error(e+": Failed to find index ("+r+")");return t[r]},r._GetTextureWrapMode=function(t,r){switch(r=void 0==r?10497:r){case 33071:return e.Texture.CLAMP_ADDRESSMODE;case 33648:return e.Texture.MIRROR_ADDRESSMODE;case 10497:return e.Texture.WRAP_ADDRESSMODE;default:return e.Tools.Warn(t+": Invalid texture wrap mode ("+r+")"),e.Texture.WRAP_ADDRESSMODE}},r._GetTextureSamplingMode=function(t,r,n){if(r=void 0==r?9729:r,n=void 0==n?9987:n,9729===r)switch(n){case 9728:return e.Texture.LINEAR_NEAREST;case 9729:return e.Texture.LINEAR_LINEAR;case 9984:return e.Texture.LINEAR_NEAREST_MIPNEAREST;case 9985:return e.Texture.LINEAR_LINEAR_MIPNEAREST;case 9986:return e.Texture.LINEAR_NEAREST_MIPLINEAR;case 9987:return e.Texture.LINEAR_LINEAR_MIPLINEAR;default:return e.Tools.Warn(t+": Invalid texture minification filter ("+n+")"),e.Texture.LINEAR_LINEAR_MIPLINEAR}else switch(9728!==r&&e.Tools.Warn(t+": Invalid texture magnification filter ("+r+")"),n){case 9728:return e.Texture.NEAREST_NEAREST;case 9729:return e.Texture.NEAREST_LINEAR;case 9984:return e.Texture.NEAREST_NEAREST_MIPNEAREST;case 9985:return e.Texture.NEAREST_LINEAR_MIPNEAREST;case 9986:return e.Texture.NEAREST_NEAREST_MIPLINEAR;case 9987:return e.Texture.NEAREST_LINEAR_MIPLINEAR;default:return e.Tools.Warn(t+": Invalid texture minification filter ("+n+")"),e.Texture.NEAREST_NEAREST_MIPNEAREST}},r._GetNumComponents=function(e,t){switch(t){case"SCALAR":return 1;case"VEC2":return 2;case"VEC3":return 3;case"VEC4":case"MAT2":return 4;case"MAT3":return 9;case"MAT4":return 16}throw new Error(e+": Invalid type ("+t+")")},r._ValidateUri=function(t){return e.Tools.IsBase64(t)||t.indexOf("..")===-1},r.prototype._compileMaterialsAsync=function(){var e=new Array;if(this._gltf.materials)for(var t=0,r=this._gltf.materials;t<r.length;t++){var n=r[t],o=n._babylonMaterial,a=n._babylonMeshes;if(o&&a)for(var i=0,s=a;i<s.length;i++){var l=s[i];e.push(o.forceCompilationAsync(l)),this.useClipPlane&&e.push(o.forceCompilationAsync(l,{clipPlane:!0}))}}return Promise.all(e).then((function(){}))},r.prototype._compileShadowGeneratorsAsync=function(){for(var e=new Array,t=this._babylonScene.lights,r=0,n=t;r<n.length;r++){var o=n[r],a=o.getShadowGenerator();a&&e.push(a.forceCompilationAsync())}return Promise.all(e).then((function(){}))},r.prototype._clear=function(){for(var e=0,t=this._requests;e<t.length;e++){t[e].abort()}if(this._requests.length=0,this._gltf&&this._gltf.images)for(var r=0,n=this._gltf.images;r<n.length;r++){var o=n[r];o._objectURL&&(o._objectURL.then((function(e){URL.revokeObjectURL(e)})),o._objectURL=void 0)}delete this._gltf,delete this._babylonScene,this._completePromises.length=0;for(var a in this._extensions)this._extensions[a].dispose();this._extensions={},delete this._rootBabylonMesh,delete this._progressCallback,this.onMeshLoadedObservable.clear(),this.onTextureLoadedObservable.clear(),this.onMaterialLoadedObservable.clear()},r.prototype._applyExtensions=function(e){for(var t=0,n=r._Names;t<n.length;t++){var o=n[t],a=this._extensions[o];if(a.enabled){var i=e(a);if(i)return i}}return null},r._Names=new Array,r._Factories={},r})();t.GLTFLoader=r,e.GLTFFileLoader.CreateGLTFLoaderV2=function(){return new r}})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;!(function(e){!(function(e){var t=(function(){function e(e){this.enabled=!0,this._loader=e}return e.prototype.dispose=function(){delete this._loader},e.prototype._loadSceneAsync=function(e,t){return null},e.prototype._loadNodeAsync=function(e,t){return null},e.prototype._loadVertexDataAsync=function(e,t,r){return null},e.prototype._loadMaterialAsync=function(e,t,r,n){return null},e.prototype._loadUriAsync=function(e,t){return null},e.prototype._loadExtensionAsync=function(e,t,r){if(!t.extensions)return null;var n=t.extensions,o=n[this.name];if(!o)return null;delete n[this.name];try{return r(e+"/extensions/"+this.name,o)}finally{n[this.name]=o}},e._LoadSceneAsync=function(e,t,r){return e._applyExtensions((function(e){return e._loadSceneAsync(t,r)}))},e._LoadNodeAsync=function(e,t,r){return e._applyExtensions((function(e){return e._loadNodeAsync(t,r)}))},e._LoadVertexDataAsync=function(e,t,r,n){return e._applyExtensions((function(e){return e._loadVertexDataAsync(t,r,n)}))},e._LoadMaterialAsync=function(e,t,r,n,o){return e._applyExtensions((function(e){return e._loadMaterialAsync(t,r,n,o)}))},e._LoadUriAsync=function(e,t,r){return e._applyExtensions((function(e){return e._loadUriAsync(t,r)}))},e})();e.GLTFLoaderExtension=t})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;!(function(e){!(function(t){!(function(r){var n="MSFT_lod",o=(function(r){function o(){var e=null!==r&&r.apply(this,arguments)||this;return e.name=n,e.maxLODsToLoad=Number.MAX_VALUE,e._loadingNodeLOD=null,e._loadNodeSignals={},e._loadingMaterialLOD=null,e._loadMaterialSignals={},e}return __extends(o,r),o.prototype._loadNodeAsync=function(t,r){var n=this;return this._loadExtensionAsync(t,r,(function(t,o){for(var a,i=n._getLODs(t,r,n._loader._gltf.nodes,o.ids),s=0;s<i.length;s++)!(function(t){var r=i[t];0!==t&&(n._loadingNodeLOD=r,n._loadNodeSignals[r._index]||(n._loadNodeSignals[r._index]=new e.Deferred));var o=n._loader._loadNodeAsync("#/nodes/"+r._index,r).then((function(){if(0!==t){var e=i[t-1];e._babylonMesh&&(e._babylonMesh.dispose(),delete e._babylonMesh)}if(t!==i.length-1){var r=i[t+1]._index;n._loadNodeSignals[r]&&(n._loadNodeSignals[r].resolve(),delete n._loadNodeSignals[r])}}));0===t?a=o:(n._loader._completePromises.push(o),n._loadingNodeLOD=null)})(s);return a}))},o.prototype._loadMaterialAsync=function(t,r,n,o){var a=this;return this._loadingNodeLOD?null:this._loadExtensionAsync(t,r,(function(t,i){for(var s,l=a._getLODs(t,r,a._loader._gltf.materials,i.ids),u=0;u<l.length;u++)!(function(t){var r=l[t];0!==t&&(a._loadingMaterialLOD=r,a._loadMaterialSignals[r._index]||(a._loadMaterialSignals[r._index]=new e.Deferred));var i=a._loader._loadMaterialAsync("#/materials/"+r._index,r,n,0===t?o:function(){}).then((function(){if(0!==t){o(r._babylonMaterial);var e=l[t-1];e._babylonMaterial&&(e._babylonMaterial.dispose(),delete e._babylonMaterial)}if(t!==l.length-1){var n=l[t+1]._index;a._loadMaterialSignals[n]&&(a._loadMaterialSignals[n].resolve(),delete a._loadMaterialSignals[n])}}));0===t?s=i:(a._loader._completePromises.push(i),a._loadingMaterialLOD=null)})(u);return s}))},o.prototype._loadUriAsync=function(e,t){var r=this;if(this._loadingMaterialLOD){var n=this._loadingMaterialLOD._index;return this._loadMaterialSignals[n].promise.then((function(){return r._loader._loadUriAsync(e,t)}))}if(this._loadingNodeLOD){var n=this._loadingNodeLOD._index;return this._loadNodeSignals[n].promise.then((function(){return r._loader._loadUriAsync(e,t)}))}return null},o.prototype._getLODs=function(e,r,n,o){if(this.maxLODsToLoad<=0)throw new Error("maxLODsToLoad must be greater than zero");for(var a=new Array,i=o.length-1;i>=0;i--)if(a.push(t.GLTFLoader._GetProperty(e+"/ids/"+o[i],n,o[i])),a.length===this.maxLODsToLoad)return a;return a.push(r),a},o})(t.GLTFLoaderExtension);r.MSFT_lod=o,t.GLTFLoader._Register(n,(function(e){return new o(e)}))})(t.Extensions||(t.Extensions={}))})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;!(function(e){!(function(t){!(function(r){var n="KHR_draco_mesh_compression",o=(function(r){function o(t){var o=r.call(this,t)||this;return o.name=n,o._dracoCompression=null,e.DracoCompression.DecoderUrl||(o.enabled=!1),o}return __extends(o,r),o.prototype.dispose=function(){this._dracoCompression&&this._dracoCompression.dispose(),r.prototype.dispose.call(this)},o.prototype._loadVertexDataAsync=function(r,n,o){var a=this;return this._loadExtensionAsync(r,n,(function(i,s){if(void 0!=n.mode){if(5!==n.mode&&4!==n.mode)throw new Error(r+": Unsupported mode "+n.mode);if(5===n.mode)throw new Error(r+": Mode "+n.mode+" is not currently supported")}var l={},u=function(e,t){var r=s.attributes[e];void 0!=r&&(o._delayInfo=o._delayInfo||[],o._delayInfo.indexOf(t)===-1&&o._delayInfo.push(t),l[t]=r)};u("POSITION",e.VertexBuffer.PositionKind),u("NORMAL",e.VertexBuffer.NormalKind),u("TANGENT",e.VertexBuffer.TangentKind),u("TEXCOORD_0",e.VertexBuffer.UVKind),u("TEXCOORD_1",e.VertexBuffer.UV2Kind),u("JOINTS_0",e.VertexBuffer.MatricesIndicesKind),u("WEIGHTS_0",e.VertexBuffer.MatricesWeightsKind),u("COLOR_0",e.VertexBuffer.ColorKind);var c=t.GLTFLoader._GetProperty(i,a._loader._gltf.bufferViews,s.bufferView);return a._loader._loadBufferViewAsync("#/bufferViews/"+c._index,c).then((function(t){try{return a._dracoCompression||(a._dracoCompression=new e.DracoCompression),a._dracoCompression.decodeMeshAsync(t,l)}catch(e){throw new Error(r+": "+e.message)}}))}))},o})(t.GLTFLoaderExtension);r.KHR_draco_mesh_compression=o,t.GLTFLoader._Register(n,(function(e){return new o(e)}))})(t.Extensions||(t.Extensions={}))})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;!(function(e){!(function(t){!(function(r){var n="KHR_materials_pbrSpecularGlossiness",o=(function(t){function r(){var e=null!==t&&t.apply(this,arguments)||this;return e.name=n,e}return __extends(r,t),r.prototype._loadMaterialAsync=function(e,t,r,n){var o=this;return this._loadExtensionAsync(e,t,(function(e,a){if(t._babylonMeshes=t._babylonMeshes||[],t._babylonMeshes.push(r),!t._loaded){var i=new Array,s=o._loader._createMaterial(t);t._babylonMaterial=s,i.push(o._loader._loadMaterialBasePropertiesAsync(e,t)),i.push(o._loadSpecularGlossinessPropertiesAsync(e,t,a)),o._loader.onMaterialLoadedObservable.notifyObservers(s),t._loaded=Promise.all(i).then((function(){}))}return n(t._babylonMaterial),t._loaded}))},r.prototype._loadSpecularGlossinessPropertiesAsync=function(t,r,n){var o=new Array,a=r._babylonMaterial;return n.diffuseFactor?(a.albedoColor=e.Color3.FromArray(n.diffuseFactor),a.alpha=n.diffuseFactor[3]):a.albedoColor=e.Color3.White(),a.reflectivityColor=n.specularFactor?e.Color3.FromArray(n.specularFactor):e.Color3.White(),a.microSurface=void 0==n.glossinessFactor?1:n.glossinessFactor,n.diffuseTexture&&o.push(this._loader._loadTextureAsync(t+"/diffuseTexture",n.diffuseTexture,(function(e){a.albedoTexture=e}))),n.specularGlossinessTexture&&(o.push(this._loader._loadTextureAsync(t+"/specularGlossinessTexture",n.specularGlossinessTexture,(function(e){a.reflectivityTexture=e}))),a.reflectivityTexture.hasAlpha=!0,a.useMicroSurfaceFromReflectivityMapAlpha=!0),this._loader._loadMaterialAlphaProperties(t,r),Promise.all(o).then((function(){}))},r})(t.GLTFLoaderExtension);r.KHR_materials_pbrSpecularGlossiness=o,t.GLTFLoader._Register(n,(function(e){return new o(e)}))})(t.Extensions||(t.Extensions={}))})(e.GLTF2||(e.GLTF2={}))})(e||(e={}));var e;return (function(e){!(function(t){!(function(r){var n,o="KHR_lights";!(function(e){e.AMBIENT="ambient",e.DIRECTIONAL="directional",e.POINT="point",e.SPOT="spot"})(n||(n={}));var a=(function(r){function a(){var e=null!==r&&r.apply(this,arguments)||this;return e.name=o,e}return __extends(a,r),a.prototype._loadSceneAsync=function(r,o){var a=this;return this._loadExtensionAsync(r,o,(function(r,i){var s=a._loader._loadSceneAsync(r,o),l=t.GLTFLoader._GetProperty(r,a._lights,i.light);if(l.type!==n.AMBIENT)throw new Error(r+": Only ambient lights are allowed on a scene");return a._loader._babylonScene.ambientColor=l.color?e.Color3.FromArray(l.color):e.Color3.Black(),s}))},a.prototype._loadNodeAsync=function(r,o){var a=this;return this._loadExtensionAsync(r,o,(function(r,i){var s,l=a._loader._loadNodeAsync(r,o),u=t.GLTFLoader._GetProperty(r,a._lights,i.light),c=o._babylonMesh.name;switch(u.type){case n.AMBIENT:throw new Error(r+": Ambient lights are not allowed on a node");case n.DIRECTIONAL:s=new e.DirectionalLight(c,e.Vector3.Forward(),a._loader._babylonScene);break;case n.POINT:s=new e.PointLight(c,e.Vector3.Zero(),a._loader._babylonScene);break;case n.SPOT:var d=u,f=d.outerConeAngle||Math.PI/4;s=new e.SpotLight(c,e.Vector3.Zero(),e.Vector3.Forward(),f,2,a._loader._babylonScene);break;default:throw new Error(r+": Invalid light type ("+u.type+")")}return s.diffuse=u.color?e.Color3.FromArray(u.color):e.Color3.White(),s.intensity=void 0==u.intensity?1:u.intensity,s.parent=o._babylonMesh,l}))},Object.defineProperty(a.prototype,"_lights",{get:function(){var e=this._loader._gltf.extensions;if(!e||!e[this.name])throw new Error("#/extensions: '"+this.name+"' not found");return e[this.name].lights},enumerable:!0,configurable:!0}),a})(t.GLTFLoaderExtension);r.KHR_lights=a,t.GLTFLoader._Register(o,(function(e){return new a(e)}))})(t.Extensions||(t.Extensions={}))})(e.GLTF2||(e.GLTF2={}))})(e||(e={})),e}));