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this._loggingEnabled},set:function(e){this._loggingEnabled!==e&&(this._loggingEnabled=e,this._loggingEnabled?this._log=this._logEnabled:this._log=this._logDisabled)},enumerable:!1,configurable:!0}),Object.defineProperty(e.prototype,"capturePerformanceCounters",{get:function(){return this._capturePerformanceCounters},set:function(e){this._capturePerformanceCounters!==e&&(this._capturePerformanceCounters=e,this._capturePerformanceCounters?(this._startPerformanceCounter=this._startPerformanceCounterEnabled,this._endPerformanceCounter=this._endPerformanceCounterEnabled):(this._startPerformanceCounter=this._startPerformanceCounterDisabled,this._endPerformanceCounter=this._endPerformanceCounterDisabled))},enumerable:!1,configurable:!0}),Object.defineProperty(e.prototype,"onValidated",{set:function(e){this._onValidatedObserver&&this.onValidatedObservable.remove(this._onValidatedObserver),this._onValidatedObserver=this.onValidatedObservable.add(e)},enumerable:!1,configurable:!0}),e.prototype.dispose=function(){this._loader&&(this._loader.dispose(),this._loader=null);for(var e=0,n=this._requests;e<n.length;e++){n[e].abort()}this._requests.length=0,delete this._progressCallback,this.preprocessUrlAsync=function(e){return 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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=new a.AssetContainer(e),u=[];i.onMaterialLoadedObservable.add((function(e){u.push(e),e.onDisposeObservable.addOnce((function(){var n=s.materials.indexOf(e);n>-1&&s.materials.splice(n,1),(n=u.indexOf(e))>-1&&u.splice(n,1)}))}));var l=[];i.onTextureLoadedObservable.add((function(e){l.push(e),e.onDisposeObservable.addOnce((function(){var n=s.textures.indexOf(e);n>-1&&s.textures.splice(n,1),(n=l.indexOf(e))>-1&&l.splice(n,1)}))}));var c=[];return i.onCameraLoadedObservable.add((function(e){c.push(e)})),i._loader.importMeshAsync(null,e,!0,n,r,t,o).then((function(e){return 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t=a.Tools.DecodeBase64(r);return this._validate(n,t),this._unpackBinaryAsync(new a.DataReader({readAsync:function(e,n){return Promise.resolve(new Uint8Array(t,e,n))},byteLength:t.byteLength}))}return this._validate(n,r),Promise.resolve({json:this._parseJson(r)})},e.prototype.createPlugin=function(){return new e},Object.defineProperty(e.prototype,"loaderState",{get:function(){return this._loader?this._loader.state:null},enumerable:!1,configurable:!0}),e.prototype.whenCompleteAsync=function(){var e=this;return new Promise((function(n,r){e.onCompleteObservable.addOnce((function(){n()})),e.onErrorObservable.addOnce((function(e){r(e)}))}))},e.prototype._loadFile=function(e,n,r,t,o){var i=this,a=n._loadFile(e,r,(function(e){i._onProgress(e,a)}),void 0,t,o);return a.onCompleteObservable.add((function(e){i._requests.splice(i._requests.indexOf(e),1)})),this._requests.push(a),a},e.prototype._requestFile=function(e,n,r,t,o,i){var a=this,s=n._requestFile(e,r,(function(e){a._onProgress(e,s)}),void 0,t,o,i);return s.onCompleteObservable.add((function(e){a._requests.splice(a._requests.indexOf(e),1)})),this._requests.push(s),s},e.prototype._onProgress=function(e,n){if(this._progressCallback){n._lengthComputable=e.lengthComputable,n._loaded=e.loaded,n._total=e.total;for(var r=!0,t=0,o=0,i=0,a=this._requests;i<a.length;i++){var s=a[i];if(void 0===s._lengthComputable||void 0===s._loaded||void 0===s._total)return;r=r&&s._lengthComputable,t+=s._loaded,o+=s._total}this._progressCallback({lengthComputable:r,loaded:t,total:r?o:0})}},e.prototype._validate=function(e,n,r,t){var o=this;void 0===r&&(r=""),void 0===t&&(t=""),this.validate&&(this._startPerformanceCounter("Validate JSON"),s.GLTFValidation.ValidateAsync(n,r,t,(function(n){return o.preprocessUrlAsync(r+n).then((function(n){return e._loadFileAsync(n,void 0,!0,!0)}))})).then((function(e){o._endPerformanceCounter("Validate JSON"),o.onValidatedObservable.notifyObservers(e),o.onValidatedObservable.clear()}),(function(e){o._endPerformanceCounter("Validate JSON"),a.Tools.Warn("Failed to validate: "+e.message),o.onValidatedObservable.clear()})))},e.prototype._getLoader=function(n){var r=n.json.asset||{};this._log("Asset version: "+r.version),r.minVersion&&this._log("Asset minimum version: "+r.minVersion),r.generator&&this._log("Asset generator: "+r.generator);var t=e._parseVersion(r.version);if(!t)throw new Error("Invalid version: "+r.version);if(void 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: 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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.magicBase64Encoded="Z2xURg",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 a}));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)}function i(){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)}}}var a=function(){function e(){}return e.ValidateAsync=function(e,n,r,a){var s=this;return"function"==typeof Worker?new Promise((function(u,l){var c=o+"("+i+")()",f=URL.createObjectURL(new Blob([c],{type:"application/javascript"})),d=new Worker(f),p=function(e){d.removeEventListener("error",p),d.removeEventListener("message",m),l(e)},m=function(e){var n=e.data;switch(n.id){case"getExternalResource":a(n.uri).then((function(e){d.postMessage({id:"getExternalResource.resolve",index:n.index,value:e},[e])}),(function(e){d.postMessage({id:"getExternalResource.reject",index:n.index,reason:e})}));break;case"validate.resolve":d.removeEventListener("error",p),d.removeEventListener("message",m),u(n.value);break;case"validate.reject":d.removeEventListener("error",p),d.removeEventListener("message",m),l(n.reason)}};d.addEventListener("error",p),d.addEventListener("message",m),d.postMessage({id:"init",url:t.Tools.GetAbsoluteUrl(s.Configuration.url)}),d.postMessage({id:"validate",data:e,rootUrl:n,fileName:r})})):(this._LoadScriptPromise||(this._LoadScriptPromise=t.Tools.LoadScriptAsync(this.Configuration.url)),this._LoadScriptPromise.then((function(){return o(e,n,r,a)})))},e.Configuration={url:"https://preview.babylonjs.com/gltf_validator.js"},e}()},function(e,n){var r;r=function(){return this}();try{r=r||new Function("return this")()}catch(e){"object"==typeof window&&(r=window)}e.exports=r},,,,function(e,n,r){"use strict";r.r(n),r.d(n,"GLTFBinaryExtension",(function(){return j})),r.d(n,"GLTFLoaderBase",(function(){return U})),r.d(n,"GLTFLoader",(function(){return G})),r.d(n,"GLTFLoaderExtension",(function(){return k})),r.d(n,"EComponentType",(function(){return i})),r.d(n,"EShaderType",(function(){return a})),r.d(n,"EParameterType",(function(){return s})),r.d(n,"ETextureWrapMode",(function(){return u})),r.d(n,"ETextureFilterType",(function(){return l})),r.d(n,"ETextureFormat",(function(){return c})),r.d(n,"ECullingType",(function(){return f})),r.d(n,"EBlendingFunction",(function(){return d})),r.d(n,"GLTFUtils",(function(){return h})),r.d(n,"GLTFMaterialsCommonExtension",(function(){return H}));
/*! *****************************************************************************
Copyright (c) Microsoft Corporation.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */
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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 m.MultiMaterial("multimat"+t,e.scene)).subMaterials=a:i=new m.StandardMaterial("multimat"+t,e.scene),1===a.length&&(i=a[0]),o.material||(o.material=i),new m.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;p=r[d];if(P=e.meshes[p])for(b=0;b<P.primitives.length;b++)P.primitives[b].mode,m.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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m.FreeCamera(n.camera,m.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],p=new m.HemisphericLight(n.light,m.Vector3.Zero(),e.scene);p.name=n.name||"",d.color&&(p.diffuse=m.Color3.FromArray(d.color)),o=p}else if("directional"===f.type){var h=f[f.type],v=new m.DirectionalLight(n.light,m.Vector3.Zero(),e.scene);v.name=n.name||"",h.color&&(v.diffuse=m.Color3.FromArray(h.color)),o=v}else if("point"===f.type){var b=f[f.type],y=new m.PointLight(n.light,m.Vector3.Zero(),e.scene);y.name=n.name||"",b.color&&(y.diffuse=m.Color3.FromArray(b.color)),o=y}else if("spot"===f.type){var A=f[f.type],_=new m.SpotLight(n.light,m.Vector3.Zero(),m.Vector3.Zero(),0,0,e.scene);_.name=n.name||"",A.color&&(_.diffuse=m.Color3.FromArray(A.color)),A.fallOfAngle&&(_.angle=A.fallOfAngle),A.fallOffExponent&&(_.exponent=A.fallOffExponent),o=_}}if(!n.jointName){if(n.babylonNode)return n.babylonNode;if(null===o){e.scene._blockEntityCollection=e.forAssetContainer;var O=new m.Mesh(n.name||"",e.scene);e.scene._blockEntityCollection=!1,n.babylonNode=O,o=O}}if(null!==o){if(n.matrix&&o instanceof m.Mesh)!function(e,n,r){if(n.matrix){var t=new m.Vector3(0,0,0),o=new m.Quaternion,i=new m.Vector3(0,0,0);m.Matrix.FromArray(n.matrix).decompose(i,o,t),P(e,t,o,i)}else n.translation&&n.rotation&&n.scale&&P(e,m.Vector3.FromArray(n.translation),m.Quaternion.FromArray(n.rotation),m.Vector3.FromArray(n.scale));e.computeWorldMatrix(!0)}(o,n);else{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);G.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 m.HemisphericLight(a.name,new m.Vector3(0,1,0),e.scene),u=a.ambient;u&&(s.diffuse=m.Color3.FromArray(u.color||[1,1,1]));break;case"point":var l=new m.PointLight(a.name,new m.Vector3(10,10,10),e.scene),c=a.point;c&&(l.diffuse=m.Color3.FromArray(c.color||[1,1,1]));break;case"directional":var f=new m.DirectionalLight(a.name,new m.Vector3(0,-1,0),e.scene),d=a.directional;d&&(f.diffuse=m.Color3.FromArray(d.color||[1,1,1]));break;case"spot":var p=a.spot;if(p)new 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