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"+(i||"")),a._loader=a._getLoader(r),a._loader.importMeshAsync(e,n,!1,r,t,o,i)})},e.prototype.loadAsync=function(e,n,r,t,o){var i=this;return Promise.resolve().then(function(){return i.onParsedObservable.notifyObservers(n),i.onParsedObservable.clear(),i._log("Loading "+(o||"")),i._loader=i._getLoader(n),i._loader.loadAsync(e,n,r,t,o)})},e.prototype.loadAssetContainerAsync=function(e,n,r,t,o){var i=this;return Promise.resolve().then(function(){i.onParsedObservable.notifyObservers(n),i.onParsedObservable.clear(),i._log("Loading "+(o||"")),i._loader=i._getLoader(n);var s=[];i.onMaterialLoadedObservable.add(function(e){s.push(e)});var u=[];return i.onTextureLoadedObservable.add(function(e){u.push(e)}),i._loader.importMeshAsync(null,e,!0,n,r,t,o).then(function(n){var r=new a.AssetContainer(e);return 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0!==r.minVersion){var o=e._parseVersion(r.minVersion);if(!o)throw new Error("Invalid minimum version: "+r.minVersion);if(e._compareVersion(o,{major:2,minor:0})>0)throw new Error("Incompatible minimum version: "+r.minVersion)}var i={1:e._CreateGLTF1Loader,2:e._CreateGLTF2Loader}[t.major];if(!i)throw new Error("Unsupported version: "+r.version);return i(this)},e.prototype._parseJson=function(e){this._startPerformanceCounter("Parse JSON"),this._log("JSON length: "+e.length);var n=JSON.parse(e);return this._endPerformanceCounter("Parse JSON"),n},e.prototype._unpackBinaryAsync=function(e){var n=this;return this._startPerformanceCounter("Unpack Binary"),e.loadAsync(20).then(function(){var r=e.readUint32();if(1179937895!==r)throw new Error("Unexpected magic: "+r);var t=e.readUint32();n.loggingEnabled&&n._log("Binary version: "+t);var o,i=e.readUint32();if(0!=e.buffer.byteLength&&i!==e.buffer.byteLength)throw new Error("Length in header does not match actual data length: "+i+" != "+e.buffer.byteLength);switch(t){case 1:o=n._unpackBinaryV1Async(e,i);break;case 2:o=n._unpackBinaryV2Async(e,i);break;default:throw new Error("Unsupported version: "+t)}return n._endPerformanceCounter("Unpack Binary"),o})},e.prototype._unpackBinaryV1Async=function(e,n){var r=e.readUint32(),t=e.readUint32();if(0!==t)throw new Error("Unexpected content format: "+t);var o=n-e.byteOffset,i={json:this._parseJson(e.readString(r)),bin:null};if(0!==o){var a=e.byteOffset;i.bin={readAsync:function(n,r){return e.buffer.readAsync(a+n,r)},byteLength:o}}return Promise.resolve(i)},e.prototype._unpackBinaryV2Async=function(e,n){var r=this,t=1313821514,o=5130562,i=e.readUint32();if(e.readUint32()!==t)throw new Error("First chunk format is not JSON");return e.byteOffset+i===n?e.loadAsync(i).then(function(){return{json:r._parseJson(e.readString(i)),bin:null}}):e.loadAsync(i+8).then(function(){var a={json:r._parseJson(e.readString(i)),bin:null},s=function(){var r=e.readUint32();switch(e.readUint32()){case t:throw new Error("Unexpected JSON chunk");case o:var i=e.byteOffset;a.bin={readAsync:function(n,r){return e.buffer.readAsync(i+n,r)},byteLength:r},e.skipBytes(r);break;default:e.skipBytes(r)}return e.byteOffset!==n?e.loadAsync(8).then(s):Promise.resolve(a)};return s()})},e._parseVersion=function(e){if("1.0"===e||"1.0.1"===e)return{major:1,minor:0};var n=(e+"").match(/^(\d+)\.(\d+)/);return n?{major:parseInt(n[1]),minor:parseInt(n[2])}:null},e._compareVersion=function(e,n){return e.major>n.major?1:e.major<n.major?-1:e.minor>n.minor?1:e.minor<n.minor?-1:0},e.prototype._logOpen=function(e){this._log(e),this._logIndentLevel++},e.prototype._logClose=function(){--this._logIndentLevel},e.prototype._logEnabled=function(n){var r=e._logSpaces.substr(0,2*this._logIndentLevel);a.Logger.Log(""+r+n)},e.prototype._logDisabled=function(e){},e.prototype._startPerformanceCounterEnabled=function(e){a.Tools.StartPerformanceCounter(e)},e.prototype._startPerformanceCounterDisabled=function(e){},e.prototype._endPerformanceCounterEnabled=function(e){a.Tools.EndPerformanceCounter(e)},e.prototype._endPerformanceCounterDisabled=function(e){},e.IncrementalLoading=!0,e.HomogeneousCoordinates=!1,e._logSpaces="                                ",e}();a.SceneLoader&&a.SceneLoader.RegisterPlugin(new u)},function(e,n,r){"use strict";r.r(n),r.d(n,"GLTFValidation",function(){return i});var t=r(0);function o(e,n,r,t){var o={externalResourceFunction:function(e){return t(e).then(function(e){return new Uint8Array(e)})}};return r&&(o.uri="file:"===n?r:n+r),e instanceof ArrayBuffer?GLTFValidator.validateBytes(new Uint8Array(e),o):GLTFValidator.validateString(e,o)}var i=function(){function e(){}return e.ValidateAsync=function(e,n,r,i){var a=this;return"function"==typeof Worker?new Promise(function(s,u){var l=o+"("+function(){var e=[];onmessage=function(n){var r=n.data;switch(r.id){case"init":importScripts(r.url);break;case"validate":o(r.data,r.rootUrl,r.fileName,function(n){return new Promise(function(r,t){var o=e.length;e.push({resolve:r,reject:t}),postMessage({id:"getExternalResource",index:o,uri:n})})}).then(function(e){postMessage({id:"validate.resolve",value:e})},function(e){postMessage({id:"validate.reject",reason:e})});break;case"getExternalResource.resolve":e[r.index].resolve(r.value);break;case"getExternalResource.reject":e[r.index].reject(r.reason)}}}+")()",c=URL.createObjectURL(new Blob([l],{type:"application/javascript"})),f=new Worker(c),d=function(e){f.removeEventListener("error",d),f.removeEventListener("message",m),u(e)},m=function(e){var 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/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0

THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.

See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
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x=e.scene.getMaterialByID(A.material);a.push(null===x?h.GetDefaultMaterial(e.scene):x),u.push(0===u.length?0:u[u.length-1]+l[l.length-2]),c.push(0===c.length?0:c[c.length-1]+f[f.length-2])}}e.scene._blockEntityCollection=e.forAssetContainer,a.length>1?(i=new p.MultiMaterial("multimat"+t,e.scene)).subMaterials=a:i=new p.StandardMaterial("multimat"+t,e.scene),1===a.length&&(i=a[0]),o.material||(o.material=i),new p.Geometry(t,e.scene,s,!1,o),o.computeWorldMatrix(!0),e.scene._blockEntityCollection=!1,o.subMeshes=[];var R=0;for(d=0;d<r.length;d++){var P;m=r[d];if(P=e.meshes[m])for(b=0;b<P.primitives.length;b++)P.primitives[b].mode,p.SubMesh.AddToMesh(R,u[R],l[R],c[R],f[R],o,o,!0),R++}return o},P=function(e,n,r,t){e.position&&(e.position=n),(e.rotationQuaternion||e.rotation)&&(e.rotationQuaternion=r),e.scaling&&(e.scaling=t)},w=function(e,n,r,t){var 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p.FreeCamera(n.camera,p.Vector3.Zero(),e.scene,!1);c.name=n.name||"",c.attachControl(e.scene.getEngine().getInputElement()),l.aspectRatio||(l.aspectRatio=e.scene.getEngine().getRenderWidth()/e.scene.getEngine().getRenderHeight()),l.znear&&l.zfar&&(c.maxZ=l.zfar,c.minZ=l.znear),o=c}e.scene._blockEntityCollection=!1}}}else{var f=e.lights[n.light];if(f)if("ambient"===f.type){var d=f[f.type],m=new p.HemisphericLight(n.light,p.Vector3.Zero(),e.scene);m.name=n.name||"",d.color&&(m.diffuse=p.Color3.FromArray(d.color)),o=m}else if("directional"===f.type){var h=f[f.type],v=new p.DirectionalLight(n.light,p.Vector3.Zero(),e.scene);v.name=n.name||"",h.color&&(v.diffuse=p.Color3.FromArray(h.color)),o=v}else if("point"===f.type){var b=f[f.type],y=new p.PointLight(n.light,p.Vector3.Zero(),e.scene);y.name=n.name||"",b.color&&(y.diffuse=p.Color3.FromArray(b.color)),o=y}else if("spot"===f.type){var A=f[f.type],E=new 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i=e.techniques[o.technique];if(!i){e.scene._blockEntityCollection=e.forAssetContainer;var a=new p.StandardMaterial(n,e.scene);return e.scene._blockEntityCollection=!1,a.diffuseColor=new p.Color3(.5,.5,.5),a.sideOrientation=p.Material.CounterClockWiseSideOrientation,void r(a)}var u=e.programs[i.program],l=i.states,c=p.Effect.ShadersStore[u.vertexShader+"VertexShader"],h=p.Effect.ShadersStore[u.fragmentShader+"PixelShader"],v="",E="",_=new b(c),O=new b(h),g={},T=[],N=[],S=[];for(var M in i.uniforms){var C=i.uniforms[M],x=i.parameters[C];if(g[M]=x,!x.semantic||x.node||x.source)x.type===s.SAMPLER_2D?S.push(M):T.push(M);else{var R=y.indexOf(x.semantic);-1!==R?(T.push(A[R]),delete g[M]):T.push(M)}}for(var P in i.attributes){var w=i.attributes[P];if((D=i.parameters[w]).semantic){var I=L(D);I&&N.push(I)}}for(;!_.isEnd()&&_.getNextToken();){if(_.currentToken===m.IDENTIFIER){var F=!1;for(var P in i.attributes){w=i.attributes[P];var 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a=o.extensions[this.name],s=e.bufferViews[a.bufferView],u=h.GetBufferFromBufferView(e,s,0,s.byteLength,i.UNSIGNED_BYTE);return setTimeout(function(){var e=h.DecodeBufferToText(u);r(e)}),!0},n}(k);U.RegisterExtension(new j);var H=function(e){function n(){return e.call(this,"KHR_materials_common")||this}return o(n,e),n.prototype.loadRuntimeExtensionsAsync=function(e,n,r){if(!e.extensions)return!1;var t=e.extensions[this.name];if(!t)return!1;var o=t.lights;if(o)for(var i in o){var a=o[i];switch(a.type){case"ambient":var s=new p.HemisphericLight(a.name,new p.Vector3(0,1,0),e.scene),u=a.ambient;u&&(s.diffuse=p.Color3.FromArray(u.color||[1,1,1]));break;case"point":var l=new p.PointLight(a.name,new p.Vector3(10,10,10),e.scene),c=a.point;c&&(l.diffuse=p.Color3.FromArray(c.color||[1,1,1]));break;case"directional":var f=new p.DirectionalLight(a.name,new p.Vector3(0,-1,0),e.scene),d=a.directional;d&&(f.diffuse=p.Color3.FromArray(d.color||[1,1,1]));break;case"spot":var m=a.spot;if(m)new 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