!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.LOADERS=t(e.BABYLON)}("undefined"!=typeof self?self:"undefined"!=typeof global?global:this,function(e){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var o=t[r]={i:r,l:!1,exports:{}};return e[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},n.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},n.t=function(e,t){if(1&t&&(e=n(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var o in e)n.d(r,o,function(t){return e[t]}.bind(null,o));return r},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=17)}([function(t,n){t.exports=e},function(e,t,n){"use strict";n.d(t,"a",function(){return a}),n.d(t,"b",function(){return i});var r=n(0),o=n(2),a=function(){function e(){}return e.Get=function(e,t,n){if(!t||null==n||!t[n])throw new Error(e+": Failed to find index ("+n+")");return t[n]},e.Assign=function(e){if(e)for(var t=0;t<e.length;t++)e[t].index=t},e}(),i=function(){function e(e){this._completePromises=new Array,this._forAssetContainer=!1,this._babylonLights=[],this._disposed=!1,this._state=null,this._extensions=new Array,this._defaultBabylonMaterialData={},this._requests=new Array,this._parent=e}return e.RegisterExtension=function(t,n){e.UnregisterExtension(t)&&r.Logger.Warn("Extension with the name '"+t+"' already exists"),e._RegisteredExtensions[t]={factory:n}},e.UnregisterExtension=function(t){return!!e._RegisteredExtensions[t]&&(delete e._RegisteredExtensions[t],!0)},Object.defineProperty(e.prototype,"state",{get:function(){return this._state},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"gltf",{get:function(){return this._gltf},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"bin",{get:function(){return this._bin},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"parent",{get:function(){return this._parent},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"babylonScene",{get:function(){return this._babylonScene},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"rootBabylonMesh",{get:function(){return this._rootBabylonMesh},enumerable:!0,configurable:!0}),e.prototype.dispose=function(){if(!this._disposed){this._disposed=!0;for(var e=0,t=this._requests;e<t.length;e++){t[e].abort()}for(var n in this._requests.length=0,this._completePromises.length=0,this._extensions){var r=this._extensions[n];r.dispose&&r.dispose(),delete this._extensions[n]}delete this._gltf,delete this._babylonScene,delete this._rootBabylonMesh,delete this._progressCallback,this._parent._clear()}},e.prototype.importMeshAsync=function(e,t,n,r,o,a,i){var s=this;return Promise.resolve().then(function(){s._babylonScene=t,s._rootUrl=o,s._fileName=i||"scene",s._progressCallback=a,s._forAssetContainer=n,s._loadData(r);var l=null;if(e){var u={};if(s._gltf.nodes)for(var c=0,d=s._gltf.nodes;c<d.length;c++){var f=d[c];f.name&&(u[f.name]=f.index)}l=(e instanceof Array?e:[e]).map(function(e){var t=u[e];if(void 0===t)throw new Error("Failed to find node '"+e+"'");return t})}return s._loadAsync(l,function(){return{meshes:s._getMeshes(),particleSystems:[],skeletons:s._getSkeletons(),animationGroups:s._getAnimationGroups(),lights:s._babylonLights,transformNodes:s._getTransformNodes()}})})},e.prototype.loadAsync=function(e,t,n,r,o){var a=this;return Promise.resolve().then(function(){return a._babylonScene=e,a._rootUrl=n,a._fileName=o||"scene",a._progressCallback=r,a._loadData(t),a._loadAsync(null,function(){})})},e.prototype._loadAsync=function(e,t){var n=this;return Promise.resolve().then(function(){n._uniqueRootUrl=-1===n._rootUrl.indexOf("file:")&&n._fileName?n._rootUrl:""+n._rootUrl+Date.now()+"/",n._loadExtensions(),n._checkExtensions();var i=o.GLTFLoaderState[o.GLTFLoaderState.LOADING]+" => "+o.GLTFLoaderState[o.GLTFLoaderState.READY],s=o.GLTFLoaderState[o.GLTFLoaderState.LOADING]+" => "+o.GLTFLoaderState[o.GLTFLoaderState.COMPLETE];n._parent._startPerformanceCounter(i),n._parent._startPerformanceCounter(s),n._setState(o.GLTFLoaderState.LOADING),n._extensionsOnLoading();var l=new Array,u=n._babylonScene.blockMaterialDirtyMechanism;if(n._babylonScene.blockMaterialDirtyMechanism=!0,e)l.push(n.loadSceneAsync("/nodes",{nodes:e,index:-1}));else if(null!=n._gltf.scene||n._gltf.scenes&&n._gltf.scenes[0]){var c=a.Get("/scene",n._gltf.scenes,n._gltf.scene||0);l.push(n.loadSceneAsync("/scenes/"+c.index,c))}n._babylonScene.blockMaterialDirtyMechanism=u,n._parent.compileMaterials&&l.push(n._compileMaterialsAsync()),n._parent.compileShadowGenerators&&l.push(n._compileShadowGeneratorsAsync());var d=Promise.all(l).then(function(){return n._rootBabylonMesh&&n._rootBabylonMesh.setEnabled(!0),n._setState(o.GLTFLoaderState.READY),n._extensionsOnReady(),n._startAnimations(),t()});return d.then(function(){n._parent._endPerformanceCounter(i),r.Tools.SetImmediate(function(){n._disposed||Promise.all(n._completePromises).then(function(){n._parent._endPerformanceCounter(s),n._setState(o.GLTFLoaderState.COMPLETE),n._parent.onCompleteObservable.notifyObservers(void 0),n._parent.onCompleteObservable.clear(),n.dispose()},function(e){n._parent.onErrorObservable.notifyObservers(e),n._parent.onErrorObservable.clear(),n.dispose()})})}),d},function(e){throw n._disposed||(n._parent.onErrorObservable.notifyObservers(e),n._parent.onErrorObservable.clear(),n.dispose()),e})},e.prototype._loadData=function(e){if(this._gltf=e.json,this._setupData(),e.bin){var t=this._gltf.buffers;if(t&&t[0]&&!t[0].uri){var n=t[0];(n.byteLength<e.bin.byteLength-3||n.byteLength>e.bin.byteLength)&&r.Logger.Warn("Binary buffer length ("+n.byteLength+") from JSON does not match chunk length ("+e.bin.byteLength+")"),this._bin=e.bin}else r.Logger.Warn("Unexpected BIN chunk")}},e.prototype._setupData=function(){if(a.Assign(this._gltf.accessors),a.Assign(this._gltf.animations),a.Assign(this._gltf.buffers),a.Assign(this._gltf.bufferViews),a.Assign(this._gltf.cameras),a.Assign(this._gltf.images),a.Assign(this._gltf.materials),a.Assign(this._gltf.meshes),a.Assign(this._gltf.nodes),a.Assign(this._gltf.samplers),a.Assign(this._gltf.scenes),a.Assign(this._gltf.skins),a.Assign(this._gltf.textures),this._gltf.nodes){for(var e={},t=0,n=this._gltf.nodes;t<n.length;t++){if((u=n[t]).children)for(var r=0,o=u.children;r<o.length;r++){e[o[r]]=u.index}}for(var i=this._createRootNode(),s=0,l=this._gltf.nodes;s<l.length;s++){var u,c=e[(u=l[s]).index];u.parent=void 0===c?i:this._gltf.nodes[c]}}},e.prototype._loadExtensions=function(){for(var t in e._RegisteredExtensions){var n=e._RegisteredExtensions[t].factory(this);n.name!==t&&r.Logger.Warn("The name of the glTF loader extension instance does not match the registered name: "+n.name+" !== "+t),this._extensions.push(n),this._parent.onExtensionLoadedObservable.notifyObservers(n)}this._extensions.sort(function(e,t){return(e.order||Number.MAX_VALUE)-(t.order||Number.MAX_VALUE)}),this._parent.onExtensionLoadedObservable.clear()},e.prototype._checkExtensions=function(){if(this._gltf.extensionsRequired)for(var e=function(e){if(!t._extensions.some(function(t){return t.name===e&&t.enabled}))throw new Error("Require extension "+e+" is not available")},t=this,n=0,r=this._gltf.extensionsRequired;n<r.length;n++){e(r[n])}},e.prototype._setState=function(e){this._state=e,this.log(o.GLTFLoaderState[this._state])},e.prototype._createRootNode=function(){this._babylonScene._blockEntityCollection=this._forAssetContainer,this._rootBabylonMesh=new r.Mesh("__root__",this._babylonScene),this._babylonScene._blockEntityCollection=!1,this._rootBabylonMesh.setEnabled(!1);var t={_babylonTransformNode:this._rootBabylonMesh,index:-1};switch(this._parent.coordinateSystemMode){case o.GLTFLoaderCoordinateSystemMode.AUTO:this._babylonScene.useRightHandedSystem||(t.rotation=[0,1,0,0],t.scale=[1,1,-1],e._LoadTransform(t,this._rootBabylonMesh));break;case o.GLTFLoaderCoordinateSystemMode.FORCE_RIGHT_HANDED:this._babylonScene.useRightHandedSystem=!0;break;default:throw new Error("Invalid coordinate system mode ("+this._parent.coordinateSystemMode+")")}return this._parent.onMeshLoadedObservable.notifyObservers(this._rootBabylonMesh),t},e.prototype.loadSceneAsync=function(e,t){var n=this,r=this._extensionsLoadSceneAsync(e,t);if(r)return r;var o=new Array;if(this.logOpen(e+" "+(t.name||"")),t.nodes)for(var i=0,s=t.nodes;i<s.length;i++){var l=s[i],u=a.Get(e+"/nodes/"+l,this._gltf.nodes,l);o.push(this.loadNodeAsync("/nodes/"+u.index,u,function(e){e.parent=n._rootBabylonMesh}))}if(this._gltf.nodes)for(var c=0,d=this._gltf.nodes;c<d.length;c++){if((u=d[c])._babylonTransformNode&&u._babylonBones)for(var f=0,h=u._babylonBones;f<h.length;f++){h[f].linkTransformNode(u._babylonTransformNode)}}return o.push(this._loadAnimationsAsync()),this.logClose(),Promise.all(o).then(function(){})},e.prototype._forEachPrimitive=function(e,t){if(e._primitiveBabylonMeshes)for(var n=0,r=e._primitiveBabylonMeshes;n<r.length;n++){t(r[n])}},e.prototype._getMeshes=function(){var e=new Array;e.push(this._rootBabylonMesh);var t=this._gltf.nodes;if(t)for(var n=0,r=t;n<r.length;n++){var o=r[n];this._forEachPrimitive(o,function(t){e.push(t)})}return e},e.prototype._getTransformNodes=function(){var e=new Array,t=this._gltf.nodes;if(t)for(var n=0,r=t;n<r.length;n++){var o=r[n];o._babylonTransformNode&&"TransformNode"===o._babylonTransformNode.getClassName()&&e.push(o._babylonTransformNode)}return e},e.prototype._getSkeletons=function(){var e=new Array,t=this._gltf.skins;if(t)for(var n=0,r=t;n<r.length;n++){var o=r[n];o._data&&e.push(o._data.babylonSkeleton)}return e},e.prototype._getAnimationGroups=function(){var e=new Array,t=this._gltf.animations;if(t)for(var n=0,r=t;n<r.length;n++){var o=r[n];o._babylonAnimationGroup&&e.push(o._babylonAnimationGroup)}return e},e.prototype._startAnimations=function(){switch(this._parent.animationStartMode){case o.GLTFLoaderAnimationStartMode.NONE:break;case o.GLTFLoaderAnimationStartMode.FIRST:0!==(e=this._getAnimationGroups()).length&&e[0].start(!0);break;case o.GLTFLoaderAnimationStartMode.ALL:for(var e,t=0,n=e=this._getAnimationGroups();t<n.length;t++){n[t].start(!0)}break;default:return void r.Logger.Error("Invalid animation start mode ("+this._parent.animationStartMode+")")}},e.prototype.loadNodeAsync=function(t,n,o){var i=this;void 0===o&&(o=function(){});var s=this._extensionsLoadNodeAsync(t,n,o);if(s)return s;if(n._babylonTransformNode)throw new Error(t+": Invalid recursive node hierarchy");var l=new Array;this.logOpen(t+" "+(n.name||""));var u=function(r){if(e.AddPointerMetadata(r,t),e._LoadTransform(n,r),null!=n.camera){var s=a.Get(t+"/camera",i._gltf.cameras,n.camera);l.push(i.loadCameraAsync("/cameras/"+s.index,s,function(e){e.parent=r}))}if(n.children)for(var u=0,c=n.children;u<c.length;u++){var d=c[u],f=a.Get(t+"/children/"+d,i._gltf.nodes,d);l.push(i.loadNodeAsync("/nodes/"+f.index,f,function(e){e.parent=r}))}o(r)};if(null==n.mesh){var c=n.name||"node"+n.index;this._babylonScene._blockEntityCollection=this._forAssetContainer,n._babylonTransformNode=new r.TransformNode(c,this._babylonScene),this._babylonScene._blockEntityCollection=!1,u(n._babylonTransformNode)}else{var d=a.Get(t+"/mesh",this._gltf.meshes,n.mesh);l.push(this._loadMeshAsync("/meshes/"+d.index,n,d,u))}return this.logClose(),Promise.all(l).then(function(){return i._forEachPrimitive(n,function(e){e.refreshBoundingInfo(!0)}),n._babylonTransformNode})},e.prototype._loadMeshAsync=function(e,t,n,o){var i=n.primitives;if(!i||!i.length)throw new Error(e+": Primitives are missing");null==i[0].index&&a.Assign(i);var s=new Array;this.logOpen(e+" "+(n.name||""));var l=t.name||"node"+t.index;if(1===i.length){var u=n.primitives[0];s.push(this._loadMeshPrimitiveAsync(e+"/primitives/"+u.index,l,t,n,u,function(e){t._babylonTransformNode=e,t._primitiveBabylonMeshes=[e]}))}else{t._babylonTransformNode=new r.TransformNode(l,this._babylonScene),t._primitiveBabylonMeshes=[];for(var c=0,d=i;c<d.length;c++){u=d[c];s.push(this._loadMeshPrimitiveAsync(e+"/primitives/"+u.index,l+"_primitive"+u.index,t,n,u,function(e){e.parent=t._babylonTransformNode,t._primitiveBabylonMeshes.push(e)}))}}if(null!=t.skin){var f=a.Get(e+"/skin",this._gltf.skins,t.skin);s.push(this._loadSkinAsync("/skins/"+f.index,t,f))}return o(t._babylonTransformNode),this.logClose(),Promise.all(s).then(function(){return t._babylonTransformNode})},e.prototype._loadMeshPrimitiveAsync=function(t,n,o,i,s,l){var u=this,c=this._extensionsLoadMeshPrimitiveAsync(t,n,o,i,s,l);if(c)return c;this.logOpen(""+t);var d,f,h=this._parent.createInstances&&null==o.skin&&!i.primitives[0].targets;if(h&&s._instanceData)d=s._instanceData.babylonSourceMesh.createInstance(n),f=s._instanceData.promise;else{var p=new Array;this._babylonScene._blockEntityCollection=this._forAssetContainer;var _=new r.Mesh(n,this._babylonScene);this._babylonScene._blockEntityCollection=!1,_.overrideMaterialSideOrientation=this._babylonScene.useRightHandedSystem?r.Material.CounterClockWiseSideOrientation:r.Material.ClockWiseSideOrientation,this._createMorphTargets(t,o,i,s,_),p.push(this._loadVertexDataAsync(t,s,_).then(function(e){return u._loadMorphTargetsAsync(t,s,_,e).then(function(){e.applyToMesh(_)})}));var y=e._GetDrawMode(t,s.mode);if(null==s.material){var m=this._defaultBabylonMaterialData[y];m||(m=this._createDefaultMaterial("__GLTFLoader._default",y),this._parent.onMaterialLoadedObservable.notifyObservers(m),this._defaultBabylonMaterialData[y]=m),_.material=m}else{var b=a.Get(t+"/material",this._gltf.materials,s.material);p.push(this._loadMaterialAsync("/materials/"+b.index,b,_,y,function(e){_.material=e}))}f=Promise.all(p),h&&(s._instanceData={babylonSourceMesh:_,promise:f}),d=_}return e.AddPointerMetadata(d,t),this._parent.onMeshLoadedObservable.notifyObservers(d),l(d),this.logClose(),f.then(function(){return d})},e.prototype._loadVertexDataAsync=function(e,t,n){var o=this,i=this._extensionsLoadVertexDataAsync(e,t,n);if(i)return i;var s=t.attributes;if(!s)throw new Error(e+": Attributes are missing");var l=new Array,u=new r.Geometry(n.name,this._babylonScene);if(null==t.indices)n.isUnIndexed=!0;else{var c=a.Get(e+"/indices",this._gltf.accessors,t.indices);l.push(this._loadIndicesAccessorAsync("/accessors/"+c.index,c).then(function(e){u.setIndices(e)}))}var d=function(t,i,c){if(null!=s[t]){n._delayInfo=n._delayInfo||[],-1===n._delayInfo.indexOf(i)&&n._delayInfo.push(i);var d=a.Get(e+"/attributes/"+t,o._gltf.accessors,s[t]);l.push(o._loadVertexAccessorAsync("/accessors/"+d.index,d,i).then(function(e){u.setVerticesBuffer(e,d.count)})),i==r.VertexBuffer.MatricesIndicesExtraKind&&(n.numBoneInfluencers=8),c&&c(d)}};return d("POSITION",r.VertexBuffer.PositionKind),d("NORMAL",r.VertexBuffer.NormalKind),d("TANGENT",r.VertexBuffer.TangentKind),d("TEXCOORD_0",r.VertexBuffer.UVKind),d("TEXCOORD_1",r.VertexBuffer.UV2Kind),d("JOINTS_0",r.VertexBuffer.MatricesIndicesKind),d("WEIGHTS_0",r.VertexBuffer.MatricesWeightsKind),d("JOINTS_1",r.VertexBuffer.MatricesIndicesExtraKind),d("WEIGHTS_1",r.VertexBuffer.MatricesWeightsExtraKind),d("COLOR_0",r.VertexBuffer.ColorKind,function(e){"VEC4"===e.type&&(n.hasVertexAlpha=!0)}),Promise.all(l).then(function(){return u})},e.prototype._createMorphTargets=function(e,t,n,o,a){if(o.targets){if(null==t._numMorphTargets)t._numMorphTargets=o.targets.length;else if(o.targets.length!==t._numMorphTargets)throw new Error(e+": Primitives do not have the same number of targets");var i=n.extras?n.extras.targetNames:null;a.morphTargetManager=new r.MorphTargetManager(a.getScene());for(var s=0;s<o.targets.length;s++){var l=t.weights?t.weights[s]:n.weights?n.weights[s]:0,u=i?i[s]:"morphTarget"+s;a.morphTargetManager.addTarget(new r.MorphTarget(u,l,a.getScene()))}}},e.prototype._loadMorphTargetsAsync=function(e,t,n,r){if(!t.targets)return Promise.resolve();for(var o=new Array,a=n.morphTargetManager,i=0;i<a.numTargets;i++){var s=a.getTarget(i);o.push(this._loadMorphTargetVertexDataAsync(e+"/targets/"+i,r,t.targets[i],s))}return Promise.all(o).then(function(){})},e.prototype._loadMorphTargetVertexDataAsync=function(e,t,n,o){var i=this,s=new Array,l=function(r,o,l){if(null!=n[r]){var u=t.getVertexBuffer(o);if(u){var c=a.Get(e+"/"+r,i._gltf.accessors,n[r]);s.push(i._loadFloatAccessorAsync("/accessors/"+c.index,c).then(function(e){l(u,e)}))}}};return l("POSITION",r.VertexBuffer.PositionKind,function(e,t){var n=new Float32Array(t.length);e.forEach(t.length,function(e,r){n[r]=t[r]+e}),o.setPositions(n)}),l("NORMAL",r.VertexBuffer.NormalKind,function(e,t){var n=new Float32Array(t.length);e.forEach(n.length,function(e,r){n[r]=t[r]+e}),o.setNormals(n)}),l("TANGENT",r.VertexBuffer.TangentKind,function(e,t){var n=new Float32Array(t.length/3*4),r=0;e.forEach(t.length/3*4,function(e,o){(o+1)%4!=0&&(n[r]=t[r]+e,r++)}),o.setTangents(n)}),Promise.all(s).then(function(){})},e._LoadTransform=function(e,t){if(null==e.skin){var n=r.Vector3.Zero(),o=r.Quaternion.Identity(),a=r.Vector3.One();if(e.matrix)r.Matrix.FromArray(e.matrix).decompose(a,o,n);else e.translation&&(n=r.Vector3.FromArray(e.translation)),e.rotation&&(o=r.Quaternion.FromArray(e.rotation)),e.scale&&(a=r.Vector3.FromArray(e.scale));t.position=n,t.rotationQuaternion=o,t.scaling=a}},e.prototype._loadSkinAsync=function(e,t,n){var o=this,a=this._extensionsLoadSkinAsync(e,t,n);if(a)return a;var i=function(e){o._forEachPrimitive(t,function(t){t.skeleton=e})};if(n._data)return i(n._data.babylonSkeleton),n._data.promise;var s="skeleton"+n.index;this._babylonScene._blockEntityCollection=this._forAssetContainer;var l=new r.Skeleton(n.name||s,s,this._babylonScene);this._babylonScene._blockEntityCollection=!1,l.overrideMesh=this._rootBabylonMesh,this._loadBones(e,n,l),i(l);var u=this._loadSkinInverseBindMatricesDataAsync(e,n).then(function(e){o._updateBoneMatrices(l,e)});return n._data={babylonSkeleton:l,promise:u},u},e.prototype._loadBones=function(e,t,n){for(var r={},o=0,i=t.joints;o<i.length;o++){var s=i[o],l=a.Get(e+"/joints/"+s,this._gltf.nodes,s);this._loadBone(l,t,n,r)}},e.prototype._loadBone=function(e,t,n,o){var a=o[e.index];if(a)return a;var i=null;e.parent&&e.parent._babylonTransformNode!==this._rootBabylonMesh&&(i=this._loadBone(e.parent,t,n,o));var s=t.joints.indexOf(e.index);return a=new r.Bone(e.name||"joint"+e.index,n,i,this._getNodeMatrix(e),null,null,s),o[e.index]=a,e._babylonBones=e._babylonBones||[],e._babylonBones.push(a),a},e.prototype._loadSkinInverseBindMatricesDataAsync=function(e,t){if(null==t.inverseBindMatrices)return Promise.resolve(null);var n=a.Get(e+"/inverseBindMatrices",this._gltf.accessors,t.inverseBindMatrices);return this._loadFloatAccessorAsync("/accessors/"+n.index,n)},e.prototype._updateBoneMatrices=function(e,t){for(var n=0,o=e.bones;n<o.length;n++){var a=o[n],i=r.Matrix.Identity(),s=a._index;t&&-1!==s&&(r.Matrix.FromArrayToRef(t,16*s,i),i.invertToRef(i));var l=a.getParent();l&&i.multiplyToRef(l.getInvertedAbsoluteTransform(),i),a.updateMatrix(i,!1,!1),a._updateDifferenceMatrix(void 0,!1)}},e.prototype._getNodeMatrix=function(e){return e.matrix?r.Matrix.FromArray(e.matrix):r.Matrix.Compose(e.scale?r.Vector3.FromArray(e.scale):r.Vector3.One(),e.rotation?r.Quaternion.FromArray(e.rotation):r.Quaternion.Identity(),e.translation?r.Vector3.FromArray(e.translation):r.Vector3.Zero())},e.prototype.loadCameraAsync=function(t,n,o){void 0===o&&(o=function(){});var a=this._extensionsLoadCameraAsync(t,n,o);if(a)return a;var i=new Array;this.logOpen(t+" "+(n.name||"")),this._babylonScene._blockEntityCollection=this._forAssetContainer;var s=new r.FreeCamera(n.name||"camera"+n.index,r.Vector3.Zero(),this._babylonScene,!1);switch(this._babylonScene._blockEntityCollection=!1,s.rotation=new r.Vector3(0,Math.PI,0),n.type){case"perspective":var l=n.perspective;if(!l)throw new Error(t+": Camera perspective properties are missing");s.fov=l.yfov,s.minZ=l.znear,s.maxZ=l.zfar||Number.MAX_VALUE;break;case"orthographic":if(!n.orthographic)throw new Error(t+": Camera orthographic properties are missing");s.mode=r.Camera.ORTHOGRAPHIC_CAMERA,s.orthoLeft=-n.orthographic.xmag,s.orthoRight=n.orthographic.xmag,s.orthoBottom=-n.orthographic.ymag,s.orthoTop=n.orthographic.ymag,s.minZ=n.orthographic.znear,s.maxZ=n.orthographic.zfar;break;default:throw new Error(t+": Invalid camera type ("+n.type+")")}return e.AddPointerMetadata(s,t),this._parent.onCameraLoadedObservable.notifyObservers(s),o(s),Promise.all(i).then(function(){return s})},e.prototype._loadAnimationsAsync=function(){var e=this._gltf.animations;if(!e)return Promise.resolve();for(var t=new Array,n=0;n<e.length;n++){var r=e[n];t.push(this.loadAnimationAsync("/animations/"+r.index,r))}return Promise.all(t).then(function(){})},e.prototype.loadAnimationAsync=function(e,t){var n=this._extensionsLoadAnimationAsync(e,t);if(n)return n;this._babylonScene._blockEntityCollection=this._forAssetContainer;var o=new r.AnimationGroup(t.name||"animation"+t.index,this._babylonScene);this._babylonScene._blockEntityCollection=!1,t._babylonAnimationGroup=o;var i=new Array;a.Assign(t.channels),a.Assign(t.samplers);for(var s=0,l=t.channels;s<l.length;s++){var u=l[s];i.push(this._loadAnimationChannelAsync(e+"/channels/"+u.index,e,t,u,o))}return Promise.all(i).then(function(){return o.normalize(0),o})},e.prototype._loadAnimationChannelAsync=function(e,t,n,o,i,s){var l=this;if(void 0===s&&(s=null),null==o.target.node)return Promise.resolve();var u=a.Get(e+"/target/node",this._gltf.nodes,o.target.node);if("weights"===o.target.path&&!u._numMorphTargets||"weights"!==o.target.path&&!u._babylonTransformNode)return Promise.resolve();var c=a.Get(e+"/sampler",n.samplers,o.sampler);return this._loadAnimationSamplerAsync(t+"/samplers/"+o.sampler,c).then(function(t){var n,a;switch(o.target.path){case"translation":n="position",a=r.Animation.ANIMATIONTYPE_VECTOR3;break;case"rotation":n="rotationQuaternion",a=r.Animation.ANIMATIONTYPE_QUATERNION;break;case"scale":n="scaling",a=r.Animation.ANIMATIONTYPE_VECTOR3;break;case"weights":n="influence",a=r.Animation.ANIMATIONTYPE_FLOAT;break;default:throw new Error(e+"/target/path: Invalid value ("+o.target.path+")")}var c,d,f=0;switch(n){case"position":c=function(){var e=r.Vector3.FromArray(t.output,f);return f+=3,e};break;case"rotationQuaternion":c=function(){var e=r.Quaternion.FromArray(t.output,f);return f+=4,e};break;case"scaling":c=function(){var e=r.Vector3.FromArray(t.output,f);return f+=3,e};break;case"influence":c=function(){for(var e=new Array(u._numMorphTargets),n=0;n<u._numMorphTargets;n++)e[n]=t.output[f++];return e}}switch(t.interpolation){case"STEP":d=function(e){return{frame:t.input[e],value:c(),interpolation:r.AnimationKeyInterpolation.STEP}};break;case"LINEAR":d=function(e){return{frame:t.input[e],value:c()}};break;case"CUBICSPLINE":d=function(e){return{frame:t.input[e],inTangent:c(),value:c(),outTangent:c()}}}for(var h=new Array(t.input.length),p=0;p<t.input.length;p++)h[p]=d(p);if("influence"===n)for(var _=function(e){var t=i.name+"_channel"+i.targetedAnimations.length,o=new r.Animation(t,n,1,a);o.setKeys(h.map(function(t){return{frame:t.frame,inTangent:t.inTangent?t.inTangent[e]:void 0,value:t.value[e],outTangent:t.outTangent?t.outTangent[e]:void 0}})),l._forEachPrimitive(u,function(t){var n=t.morphTargetManager.getTarget(e),r=o.clone();n.animations.push(r),i.addTargetedAnimation(r,n)})},y=0;y<u._numMorphTargets;y++)_(y);else{var m=i.name+"_channel"+i.targetedAnimations.length,b=new r.Animation(m,n,1,a);b.setKeys(h),null!=s&&null!=s.animations?(s.animations.push(b),i.addTargetedAnimation(b,s)):(u._babylonTransformNode.animations.push(b),i.addTargetedAnimation(b,u._babylonTransformNode))}})},e.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+"/interpolation: Invalid value ("+t.interpolation+")")}var r=a.Get(e+"/input",this._gltf.accessors,t.input),o=a.Get(e+"/output",this._gltf.accessors,t.output);return t._data=Promise.all([this._loadFloatAccessorAsync("/accessors/"+r.index,r),this._loadFloatAccessorAsync("/accessors/"+o.index,o)]).then(function(e){var t=e[0],r=e[1];return{input:t,interpolation:n,output:r}}),t._data},e.prototype._loadBufferAsync=function(e,t,n,r){var o=this._extensionsLoadBufferAsync(e,t,n,r);if(o)return o;if(!t._data)if(t.uri)t._data=this.loadUriAsync(e+"/uri",t,t.uri);else{if(!this._bin)throw new Error(e+": Uri is missing or the binary glTF is missing its binary chunk");t._data=this._bin.readAsync(0,t.byteLength)}return t._data.then(function(t){try{return new Uint8Array(t.buffer,t.byteOffset+n,r)}catch(t){throw new Error(e+": "+t.message)}})},e.prototype.loadBufferViewAsync=function(e,t){var n=this._extensionsLoadBufferViewAsync(e,t);if(n)return n;if(t._data)return t._data;var r=a.Get(e+"/buffer",this._gltf.buffers,t.buffer);return t._data=this._loadBufferAsync("/buffers/"+r.index,r,t.byteOffset||0,t.byteLength),t._data},e.prototype._loadAccessorAsync=function(t,n,o){var i=this;if(n._data)return n._data;var s=e._GetNumComponents(t,n.type),l=s*r.VertexBuffer.GetTypeByteLength(n.componentType),u=s*n.count;if(null==n.bufferView)n._data=Promise.resolve(new o(u));else{var c=a.Get(t+"/bufferView",this._gltf.bufferViews,n.bufferView);n._data=this.loadBufferViewAsync("/bufferViews/"+c.index,c).then(function(a){if(5126!==n.componentType||n.normalized){var i=new o(u);return r.VertexBuffer.ForEach(a,n.byteOffset||0,c.byteStride||l,s,n.componentType,i.length,n.normalized||!1,function(e,t){i[t]=e}),i}return e._GetTypedArray(t,n.componentType,a,n.byteOffset,u)})}if(n.sparse){var d=n.sparse;n._data=n._data.then(function(u){var c=u,f=a.Get(t+"/sparse/indices/bufferView",i._gltf.bufferViews,d.indices.bufferView),h=a.Get(t+"/sparse/values/bufferView",i._gltf.bufferViews,d.values.bufferView);return Promise.all([i.loadBufferViewAsync("/bufferViews/"+f.index,f),i.loadBufferViewAsync("/bufferViews/"+h.index,h)]).then(function(a){var i,u=a[0],f=a[1],h=e._GetTypedArray(t+"/sparse/indices",d.indices.componentType,u,d.indices.byteOffset,d.count),p=s*d.count;if(5126!==n.componentType||n.normalized){var _=e._GetTypedArray(t+"/sparse/values",n.componentType,f,d.values.byteOffset,p);i=new o(p),r.VertexBuffer.ForEach(_,0,l,s,n.componentType,i.length,n.normalized||!1,function(e,t){i[t]=e})}else i=e._GetTypedArray(t+"/sparse/values",n.componentType,f,d.values.byteOffset,p);for(var y=0,m=0;m<h.length;m++)for(var b=h[m]*s,v=0;v<s;v++)c[b++]=i[y++];return c})})}return n._data},e.prototype._loadFloatAccessorAsync=function(e,t){return this._loadAccessorAsync(e,t,Float32Array)},e.prototype._loadIndicesAccessorAsync=function(t,n){if("SCALAR"!==n.type)throw new Error(t+"/type: Invalid value "+n.type);if(5121!==n.componentType&&5123!==n.componentType&&5125!==n.componentType)throw new Error(t+"/componentType: Invalid value "+n.componentType);if(n._data)return n._data;if(n.sparse){var r=e._GetTypedArrayConstructor(t+"/componentType",n.componentType);n._data=this._loadAccessorAsync(t,n,r)}else{var o=a.Get(t+"/bufferView",this._gltf.bufferViews,n.bufferView);n._data=this.loadBufferViewAsync("/bufferViews/"+o.index,o).then(function(r){return e._GetTypedArray(t,n.componentType,r,n.byteOffset,n.count)})}return n._data},e.prototype._loadVertexBufferViewAsync=function(e,t){var n=this;return e._babylonBuffer?e._babylonBuffer:(e._babylonBuffer=this.loadBufferViewAsync("/bufferViews/"+e.index,e).then(function(e){return new r.Buffer(n._babylonScene.getEngine(),e,!1)}),e._babylonBuffer)},e.prototype._loadVertexAccessorAsync=function(t,n,o){var i=this;if(n._babylonVertexBuffer)return n._babylonVertexBuffer;if(n.sparse)n._babylonVertexBuffer=this._loadFloatAccessorAsync("/accessors/"+n.index,n).then(function(e){return new r.VertexBuffer(i._babylonScene.getEngine(),e,o,!1)});else if(n.byteOffset&&n.byteOffset%r.VertexBuffer.GetTypeByteLength(n.componentType)!=0)r.Logger.Warn("Accessor byte offset is not a multiple of component type byte length"),n._babylonVertexBuffer=this._loadFloatAccessorAsync("/accessors/"+n.index,n).then(function(e){return new r.VertexBuffer(i._babylonScene.getEngine(),e,o,!1)});else if(o===r.VertexBuffer.MatricesIndicesKind||o===r.VertexBuffer.MatricesIndicesExtraKind)n._babylonVertexBuffer=this._loadFloatAccessorAsync("/accessors/"+n.index,n).then(function(e){return new r.VertexBuffer(i._babylonScene.getEngine(),e,o,!1)});else{var s=a.Get(t+"/bufferView",this._gltf.bufferViews,n.bufferView);n._babylonVertexBuffer=this._loadVertexBufferViewAsync(s,o).then(function(a){var l=e._GetNumComponents(t,n.type);return new r.VertexBuffer(i._babylonScene.getEngine(),a,o,!1,!1,s.byteStride,!1,n.byteOffset,l,n.componentType,n.normalized,!0)})}return n._babylonVertexBuffer},e.prototype._loadMaterialMetallicRoughnessPropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var o=new Array;return t&&(t.baseColorFactor?(n.albedoColor=r.Color3.FromArray(t.baseColorFactor),n.alpha=t.baseColorFactor[3]):n.albedoColor=r.Color3.White(),n.metallic=null==t.metallicFactor?1:t.metallicFactor,n.roughness=null==t.roughnessFactor?1:t.roughnessFactor,t.baseColorTexture&&o.push(this.loadTextureInfoAsync(e+"/baseColorTexture",t.baseColorTexture,function(e){e.name=n.name+" (Base Color)",n.albedoTexture=e})),t.metallicRoughnessTexture&&(o.push(this.loadTextureInfoAsync(e+"/metallicRoughnessTexture",t.metallicRoughnessTexture,function(e){e.name=n.name+" (Metallic Roughness)",n.metallicTexture=e})),n.useMetallnessFromMetallicTextureBlue=!0,n.useRoughnessFromMetallicTextureGreen=!0,n.useRoughnessFromMetallicTextureAlpha=!1)),Promise.all(o).then(function(){})},e.prototype._loadMaterialAsync=function(t,n,r,o,a){void 0===a&&(a=function(){});var i=this._extensionsLoadMaterialAsync(t,n,r,o,a);if(i)return i;n._data=n._data||{};var s=n._data[o];if(!s){this.logOpen(t+" "+(n.name||""));var l=this.createMaterial(t,n,o);s={babylonMaterial:l,babylonMeshes:[],promise:this.loadMaterialPropertiesAsync(t,n,l)},n._data[o]=s,e.AddPointerMetadata(l,t),this._parent.onMaterialLoadedObservable.notifyObservers(l),this.logClose()}return s.babylonMeshes.push(r),r.onDisposeObservable.addOnce(function(){var e=s.babylonMeshes.indexOf(r);-1!==e&&s.babylonMeshes.splice(e,1)}),a(s.babylonMaterial),s.promise.then(function(){return s.babylonMaterial})},e.prototype._createDefaultMaterial=function(e,t){this._babylonScene._blockEntityCollection=this._forAssetContainer;var n=new r.PBRMaterial(e,this._babylonScene);return this._babylonScene._blockEntityCollection=!1,n.fillMode=t,n.enableSpecularAntiAliasing=!0,n.useRadianceOverAlpha=!this._parent.transparencyAsCoverage,n.useSpecularOverAlpha=!this._parent.transparencyAsCoverage,n.transparencyMode=r.PBRMaterial.PBRMATERIAL_OPAQUE,n.metallic=1,n.roughness=1,n},e.prototype.createMaterial=function(e,t,n){var r=this._extensionsCreateMaterial(e,t,n);if(r)return r;var o=t.name||"material"+t.index;return this._createDefaultMaterial(o,n)},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this._extensionsLoadMaterialPropertiesAsync(e,t,n);if(r)return r;var o=new Array;return o.push(this.loadMaterialBasePropertiesAsync(e,t,n)),t.pbrMetallicRoughness&&o.push(this._loadMaterialMetallicRoughnessPropertiesAsync(e+"/pbrMetallicRoughness",t.pbrMetallicRoughness,n)),this.loadMaterialAlphaProperties(e,t,n),Promise.all(o).then(function(){})},e.prototype.loadMaterialBasePropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var o=new Array;return n.emissiveColor=t.emissiveFactor?r.Color3.FromArray(t.emissiveFactor):new r.Color3(0,0,0),t.doubleSided&&(n.backFaceCulling=!1,n.twoSidedLighting=!0),t.normalTexture&&(o.push(this.loadTextureInfoAsync(e+"/normalTexture",t.normalTexture,function(e){e.name=n.name+" (Normal)",n.bumpTexture=e})),n.invertNormalMapX=!this._babylonScene.useRightHandedSystem,n.invertNormalMapY=this._babylonScene.useRightHandedSystem,null!=t.normalTexture.scale&&(n.bumpTexture.level=t.normalTexture.scale),n.forceIrradianceInFragment=!0),t.occlusionTexture&&(o.push(this.loadTextureInfoAsync(e+"/occlusionTexture",t.occlusionTexture,function(e){e.name=n.name+" (Occlusion)",n.ambientTexture=e})),n.useAmbientInGrayScale=!0,null!=t.occlusionTexture.strength&&(n.ambientTextureStrength=t.occlusionTexture.strength)),t.emissiveTexture&&o.push(this.loadTextureInfoAsync(e+"/emissiveTexture",t.emissiveTexture,function(e){e.name=n.name+" (Emissive)",n.emissiveTexture=e})),Promise.all(o).then(function(){})},e.prototype.loadMaterialAlphaProperties=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");switch(t.alphaMode||"OPAQUE"){case"OPAQUE":n.transparencyMode=r.PBRMaterial.PBRMATERIAL_OPAQUE;break;case"MASK":n.transparencyMode=r.PBRMaterial.PBRMATERIAL_ALPHATEST,n.alphaCutOff=null==t.alphaCutoff?.5:t.alphaCutoff,n.albedoTexture&&(n.albedoTexture.hasAlpha=!0);break;case"BLEND":n.transparencyMode=r.PBRMaterial.PBRMATERIAL_ALPHABLEND,n.albedoTexture&&(n.albedoTexture.hasAlpha=!0,n.useAlphaFromAlbedoTexture=!0);break;default:throw new Error(e+"/alphaMode: Invalid value ("+t.alphaMode+")")}},e.prototype.loadTextureInfoAsync=function(t,n,r){var o=this;void 0===r&&(r=function(){});var i=this._extensionsLoadTextureInfoAsync(t,n,r);if(i)return i;if(this.logOpen(""+t),n.texCoord>=2)throw new Error(t+"/texCoord: Invalid value ("+n.texCoord+")");var s=a.Get(t+"/index",this._gltf.textures,n.index),l=this._loadTextureAsync("/textures/"+n.index,s,function(a){a.coordinatesIndex=n.texCoord||0,e.AddPointerMetadata(a,t),o._parent.onTextureLoadedObservable.notifyObservers(a),r(a)});return this.logClose(),l},e.prototype._loadTextureAsync=function(t,n,r){void 0===r&&(r=function(){});var o=this._extensionsLoadTextureAsync(t,n,r);if(o)return o;this.logOpen(t+" "+(n.name||""));var i=null==n.sampler?e.DefaultSampler:a.Get(t+"/sampler",this._gltf.samplers,n.sampler),s=a.Get(t+"/source",this._gltf.images,n.source),l=this._createTextureAsync(t,i,s,r);return this.logClose(),l},e.prototype._createTextureAsync=function(e,t,n,o){var a=this;void 0===o&&(o=function(){});var i=this._loadSampler("/samplers/"+t.index,t),s=new Array,l=new r.Deferred;this._babylonScene._blockEntityCollection=this._forAssetContainer;var u=new r.Texture(null,this._babylonScene,i.noMipMaps,!1,i.samplingMode,function(){a._disposed||l.resolve()},function(t,n){a._disposed||l.reject(new Error(e+": "+(n&&n.message?n.message:t||"Failed to load texture")))},void 0,void 0,void 0,n.mimeType);return this._babylonScene._blockEntityCollection=!1,s.push(l.promise),s.push(this.loadImageAsync("/images/"+n.index,n).then(function(e){var t=n.uri||a._fileName+"#image"+n.index,r="data:"+a._uniqueRootUrl+t;u.updateURL(r,e)})),u.wrapU=i.wrapU,u.wrapV=i.wrapV,o(u),Promise.all(s).then(function(){return u})},e.prototype._loadSampler=function(t,n){return n._data||(n._data={noMipMaps:9728===n.minFilter||9729===n.minFilter,samplingMode:e._GetTextureSamplingMode(t,n),wrapU:e._GetTextureWrapMode(t+"/wrapS",n.wrapS),wrapV:e._GetTextureWrapMode(t+"/wrapT",n.wrapT)}),n._data},e.prototype.loadImageAsync=function(e,t){if(!t._data){if(this.logOpen(e+" "+(t.name||"")),t.uri)t._data=this.loadUriAsync(e+"/uri",t,t.uri);else{var n=a.Get(e+"/bufferView",this._gltf.bufferViews,t.bufferView);t._data=this.loadBufferViewAsync("/bufferViews/"+n.index,n)}this.logClose()}return t._data},e.prototype.loadUriAsync=function(t,n,a){var i=this,s=this._extensionsLoadUriAsync(t,n,a);if(s)return s;if(!e._ValidateUri(a))throw new Error(t+": '"+a+"' is invalid");if(r.Tools.IsBase64(a)){var l=new Uint8Array(r.Tools.DecodeBase64(a));return this.log("Decoded "+a.substr(0,64)+"... ("+l.length+" bytes)"),Promise.resolve(l)}return this.log("Loading "+a),this._parent.preprocessUrlAsync(this._rootUrl+a).then(function(e){return new Promise(function(n,s){if(!i._disposed){var l=r.Tools.LoadFile(e,function(e){if(!i._disposed){var t=new Uint8Array(e);i.log("Loaded "+a+" ("+t.length+" bytes)"),n(t)}},function(e){if(!i._disposed&&(l&&(l._lengthComputable=e.lengthComputable,l._loaded=e.loaded,l._total=e.total),i._state===o.GLTFLoaderState.LOADING))try{i._onProgress()}catch(e){s(e)}},i._babylonScene.offlineProvider,!0,function(e,n){i._disposed||s(new r.LoadFileError(t+": Failed to load '"+a+"'"+(e?": "+e.status+" "+e.statusText:""),e))});i._requests.push(l)}})})},e.prototype._onProgress=function(){if(this._progressCallback){for(var e=!0,t=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;e=e&&i._lengthComputable,t+=i._loaded,n+=i._total}this._progressCallback(new r.SceneLoaderProgressEvent(e,t,e?n:0))}},e.AddPointerMetadata=function(e,t){var n=e.metadata=e.metadata||{},r=n.gltf=n.gltf||{};(r.pointers=r.pointers||[]).push(t)},e._GetTextureWrapMode=function(e,t){switch(t=null==t?10497:t){case 33071:return r.Texture.CLAMP_ADDRESSMODE;case 33648:return r.Texture.MIRROR_ADDRESSMODE;case 10497:return r.Texture.WRAP_ADDRESSMODE;default:return r.Logger.Warn(e+": Invalid value ("+t+")"),r.Texture.WRAP_ADDRESSMODE}},e._GetTextureSamplingMode=function(e,t){var n=null==t.magFilter?9729:t.magFilter,o=null==t.minFilter?9987:t.minFilter;if(9729===n)switch(o){case 9728:return r.Texture.LINEAR_NEAREST;case 9729:return r.Texture.LINEAR_LINEAR;case 9984:return r.Texture.LINEAR_NEAREST_MIPNEAREST;case 9985:return r.Texture.LINEAR_LINEAR_MIPNEAREST;case 9986:return r.Texture.LINEAR_NEAREST_MIPLINEAR;case 9987:return r.Texture.LINEAR_LINEAR_MIPLINEAR;default:return r.Logger.Warn(e+"/minFilter: Invalid value ("+o+")"),r.Texture.LINEAR_LINEAR_MIPLINEAR}else switch(9728!==n&&r.Logger.Warn(e+"/magFilter: Invalid value ("+n+")"),o){case 9728:return r.Texture.NEAREST_NEAREST;case 9729:return r.Texture.NEAREST_LINEAR;case 9984:return r.Texture.NEAREST_NEAREST_MIPNEAREST;case 9985:return r.Texture.NEAREST_LINEAR_MIPNEAREST;case 9986:return r.Texture.NEAREST_NEAREST_MIPLINEAR;case 9987:return r.Texture.NEAREST_LINEAR_MIPLINEAR;default:return r.Logger.Warn(e+"/minFilter: Invalid value ("+o+")"),r.Texture.NEAREST_NEAREST_MIPNEAREST}},e._GetTypedArrayConstructor=function(e,t){switch(t){case 5120:return Int8Array;case 5121:return Uint8Array;case 5122:return Int16Array;case 5123:return Uint16Array;case 5125:return Uint32Array;case 5126:return Float32Array;default:throw new Error(e+": Invalid component type "+t)}},e._GetTypedArray=function(t,n,r,o,a){var i=r.buffer;o=r.byteOffset+(o||0);var s=e._GetTypedArrayConstructor(t+"/componentType",n);try{return new s(i,o,a)}catch(e){throw new Error(t+": "+e)}},e._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+")")},e._ValidateUri=function(e){return r.Tools.IsBase64(e)||-1===e.indexOf("..")},e._GetDrawMode=function(e,t){switch(null==t&&(t=4),t){case 0:return r.Material.PointListDrawMode;case 1:return r.Material.LineListDrawMode;case 2:return r.Material.LineLoopDrawMode;case 3:return r.Material.LineStripDrawMode;case 4:return r.Material.TriangleFillMode;case 5:return r.Material.TriangleStripDrawMode;case 6:return r.Material.TriangleFanDrawMode}throw new Error(e+": Invalid mesh primitive mode ("+t+")")},e.prototype._compileMaterialsAsync=function(){var e=this;this._parent._startPerformanceCounter("Compile materials");var t=new Array;if(this._gltf.materials)for(var n=0,r=this._gltf.materials;n<r.length;n++){var o=r[n];if(o._data)for(var a in o._data)for(var i=o._data[a],s=0,l=i.babylonMeshes;s<l.length;s++){var u=l[s];u.computeWorldMatrix(!0);var c=i.babylonMaterial;t.push(c.forceCompilationAsync(u)),t.push(c.forceCompilationAsync(u,{useInstances:!0})),this._parent.useClipPlane&&(t.push(c.forceCompilationAsync(u,{clipPlane:!0})),t.push(c.forceCompilationAsync(u,{clipPlane:!0,useInstances:!0})))}}return Promise.all(t).then(function(){e._parent._endPerformanceCounter("Compile materials")})},e.prototype._compileShadowGeneratorsAsync=function(){var e=this;this._parent._startPerformanceCounter("Compile shadow generators");for(var t=new Array,n=0,r=this._babylonScene.lights;n<r.length;n++){var o=r[n].getShadowGenerator();o&&t.push(o.forceCompilationAsync())}return Promise.all(t).then(function(){e._parent._endPerformanceCounter("Compile shadow generators")})},e.prototype._forEachExtensions=function(e){for(var t=0,n=this._extensions;t<n.length;t++){var r=n[t];r.enabled&&e(r)}},e.prototype._applyExtensions=function(e,t,n){for(var r=0,o=this._extensions;r<o.length;r++){var a=o[r];if(a.enabled){var i=a.name+"."+t,s=e;s._activeLoaderExtensionFunctions=s._activeLoaderExtensionFunctions||{};var l=s._activeLoaderExtensionFunctions;if(!l[i]){l[i]=!0;try{var u=n(a);if(u)return u}finally{delete l[i]}}}}return null},e.prototype._extensionsOnLoading=function(){this._forEachExtensions(function(e){return e.onLoading&&e.onLoading()})},e.prototype._extensionsOnReady=function(){this._forEachExtensions(function(e){return e.onReady&&e.onReady()})},e.prototype._extensionsLoadSceneAsync=function(e,t){return this._applyExtensions(t,"loadScene",function(n){return n.loadSceneAsync&&n.loadSceneAsync(e,t)})},e.prototype._extensionsLoadNodeAsync=function(e,t,n){return this._applyExtensions(t,"loadNode",function(r){return r.loadNodeAsync&&r.loadNodeAsync(e,t,n)})},e.prototype._extensionsLoadCameraAsync=function(e,t,n){return this._applyExtensions(t,"loadCamera",function(r){return r.loadCameraAsync&&r.loadCameraAsync(e,t,n)})},e.prototype._extensionsLoadVertexDataAsync=function(e,t,n){return this._applyExtensions(t,"loadVertexData",function(r){return r._loadVertexDataAsync&&r._loadVertexDataAsync(e,t,n)})},e.prototype._extensionsLoadMeshPrimitiveAsync=function(e,t,n,r,o,a){return this._applyExtensions(o,"loadMeshPrimitive",function(i){return i._loadMeshPrimitiveAsync&&i._loadMeshPrimitiveAsync(e,t,n,r,o,a)})},e.prototype._extensionsLoadMaterialAsync=function(e,t,n,r,o){return this._applyExtensions(t,"loadMaterial",function(a){return a._loadMaterialAsync&&a._loadMaterialAsync(e,t,n,r,o)})},e.prototype._extensionsCreateMaterial=function(e,t,n){return this._applyExtensions(t,"createMaterial",function(r){return r.createMaterial&&r.createMaterial(e,t,n)})},e.prototype._extensionsLoadMaterialPropertiesAsync=function(e,t,n){return this._applyExtensions(t,"loadMaterialProperties",function(r){return r.loadMaterialPropertiesAsync&&r.loadMaterialPropertiesAsync(e,t,n)})},e.prototype._extensionsLoadTextureInfoAsync=function(e,t,n){return this._applyExtensions(t,"loadTextureInfo",function(r){return r.loadTextureInfoAsync&&r.loadTextureInfoAsync(e,t,n)})},e.prototype._extensionsLoadTextureAsync=function(e,t,n){return this._applyExtensions(t,"loadTexture",function(r){return r._loadTextureAsync&&r._loadTextureAsync(e,t,n)})},e.prototype._extensionsLoadAnimationAsync=function(e,t){return this._applyExtensions(t,"loadAnimation",function(n){return n.loadAnimationAsync&&n.loadAnimationAsync(e,t)})},e.prototype._extensionsLoadSkinAsync=function(e,t,n){return this._applyExtensions(n,"loadSkin",function(r){return r._loadSkinAsync&&r._loadSkinAsync(e,t,n)})},e.prototype._extensionsLoadUriAsync=function(e,t,n){return this._applyExtensions(t,"loadUri",function(r){return r._loadUriAsync&&r._loadUriAsync(e,t,n)})},e.prototype._extensionsLoadBufferViewAsync=function(e,t){return this._applyExtensions(t,"loadBufferView",function(n){return n.loadBufferViewAsync&&n.loadBufferViewAsync(e,t)})},e.prototype._extensionsLoadBufferAsync=function(e,t,n,r){return this._applyExtensions(t,"loadBuffer",function(o){return o.loadBufferAsync&&o.loadBufferAsync(e,t,n,r)})},e.LoadExtensionAsync=function(e,t,n,r){if(!t.extensions)return null;var o=t.extensions[n];return o?r(e+"/extensions/"+n,o):null},e.LoadExtraAsync=function(e,t,n,r){if(!t.extras)return null;var o=t.extras[n];return o?r(e+"/extras/"+n,o):null},e.prototype.isExtensionUsed=function(e){return!!this._gltf.extensionsUsed&&-1!==this._gltf.extensionsUsed.indexOf(e)},e.prototype.logOpen=function(e){this._parent._logOpen(e)},e.prototype.logClose=function(){this._parent._logClose()},e.prototype.log=function(e){this._parent._log(e)},e.prototype.startPerformanceCounter=function(e){this._parent._startPerformanceCounter(e)},e.prototype.endPerformanceCounter=function(e){this._parent._endPerformanceCounter(e)},e._RegisteredExtensions={},e.DefaultSampler={index:-1},e}();o.GLTFFileLoader._CreateGLTF2Loader=function(e){return new i(e)}},function(e,t,n){"use strict";n.r(t),n.d(t,"GLTFLoaderCoordinateSystemMode",function(){return r}),n.d(t,"GLTFLoaderAnimationStartMode",function(){return o}),n.d(t,"GLTFLoaderState",function(){return a}),n.d(t,"GLTFFileLoader",function(){return l});var r,o,a,i=n(0),s=n(3);!function(e){e[e.AUTO=0]="AUTO",e[e.FORCE_RIGHT_HANDED=1]="FORCE_RIGHT_HANDED"}(r||(r={})),function(e){e[e.NONE=0]="NONE",e[e.FIRST=1]="FIRST",e[e.ALL=2]="ALL"}(o||(o={})),function(e){e[e.LOADING=0]="LOADING",e[e.READY=1]="READY",e[e.COMPLETE=2]="COMPLETE"}(a||(a={}));var l=function(){function e(){this.onParsedObservable=new i.Observable,this.coordinateSystemMode=r.AUTO,this.animationStartMode=o.FIRST,this.compileMaterials=!1,this.useClipPlane=!1,this.compileShadowGenerators=!1,this.transparencyAsCoverage=!1,this.useRangeRequests=!1,this.createInstances=!0,this.preprocessUrlAsync=function(e){return Promise.resolve(e)},this.onMeshLoadedObservable=new i.Observable,this.onTextureLoadedObservable=new i.Observable,this.onMaterialLoadedObservable=new i.Observable,this.onCameraLoadedObservable=new i.Observable,this.onCompleteObservable=new i.Observable,this.onErrorObservable=new i.Observable,this.onDisposeObservable=new i.Observable,this.onExtensionLoadedObservable=new i.Observable,this.validate=!1,this.onValidatedObservable=new i.Observable,this._loader=null,this.name="gltf",this.extensions={".gltf":{isBinary:!1},".glb":{isBinary:!0}},this._logIndentLevel=0,this._loggingEnabled=!1,this._log=this._logDisabled,this._capturePerformanceCounters=!1,this._startPerformanceCounter=this._startPerformanceCounterDisabled,this._endPerformanceCounter=this._endPerformanceCounterDisabled}return Object.defineProperty(e.prototype,"onParsed",{set:function(e){this._onParsedObserver&&this.onParsedObservable.remove(this._onParsedObserver),this._onParsedObserver=this.onParsedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onMeshLoaded",{set:function(e){this._onMeshLoadedObserver&&this.onMeshLoadedObservable.remove(this._onMeshLoadedObserver),this._onMeshLoadedObserver=this.onMeshLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onTextureLoaded",{set:function(e){this._onTextureLoadedObserver&&this.onTextureLoadedObservable.remove(this._onTextureLoadedObserver),this._onTextureLoadedObserver=this.onTextureLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onMaterialLoaded",{set:function(e){this._onMaterialLoadedObserver&&this.onMaterialLoadedObservable.remove(this._onMaterialLoadedObserver),this._onMaterialLoadedObserver=this.onMaterialLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onCameraLoaded",{set:function(e){this._onCameraLoadedObserver&&this.onCameraLoadedObservable.remove(this._onCameraLoadedObserver),this._onCameraLoadedObserver=this.onCameraLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onComplete",{set:function(e){this._onCompleteObserver&&this.onCompleteObservable.remove(this._onCompleteObserver),this._onCompleteObserver=this.onCompleteObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onError",{set:function(e){this._onErrorObserver&&this.onErrorObservable.remove(this._onErrorObserver),this._onErrorObserver=this.onErrorObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onDispose",{set:function(e){this._onDisposeObserver&&this.onDisposeObservable.remove(this._onDisposeObserver),this._onDisposeObserver=this.onDisposeObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"onExtensionLoaded",{set:function(e){this._onExtensionLoadedObserver&&this.onExtensionLoadedObservable.remove(this._onExtensionLoadedObserver),this._onExtensionLoadedObserver=this.onExtensionLoadedObservable.add(e)},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"loggingEnabled",{get:function(){return this._loggingEnabled},set:function(e){this._loggingEnabled!==e&&(this._loggingEnabled=e,this._loggingEnabled?this._log=this._logEnabled:this._log=this._logDisabled)},enumerable:!0,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:!0,configurable:!0}),Object.defineProperty(e.prototype,"onValidated",{set:function(e){this._onValidatedObserver&&this.onValidatedObservable.remove(this._onValidatedObserver),this._onValidatedObserver=this.onValidatedObservable.add(e)},enumerable:!0,configurable:!0}),e.prototype.dispose=function(){this._loader&&(this._loader.dispose(),this._loader=null),this._clear(),this.onDisposeObservable.notifyObservers(void 0),this.onDisposeObservable.clear()},e.prototype._clear=function(){this.preprocessUrlAsync=function(e){return Promise.resolve(e)},this.onMeshLoadedObservable.clear(),this.onTextureLoadedObservable.clear(),this.onMaterialLoadedObservable.clear(),this.onCameraLoadedObservable.clear(),this.onCompleteObservable.clear(),this.onExtensionLoadedObservable.clear()},e.prototype.requestFile=function(e,t,n,r,o,a){var s=this;if(o){if(this.useRangeRequests){this.validate&&i.Logger.Warn("glTF validation is not supported when range requests are enabled");var l=new Array,u={abort:function(){return l.forEach(function(e){return e.abort()})},onCompleteObservable:new i.Observable},c={readAsync:function(n,o){return new Promise(function(a,i){l.push(e._requestFile(t,function(e,t){var n=t.getResponseHeader("Content-Range");n&&(c.byteLength=Number(n.split("/")[1])),a(new Uint8Array(e))},r,!0,!0,function(e){i(e)},function(e){e.setRequestHeader("Range","bytes="+n+"-"+(n+o-1))}))})},byteLength:0};return this._unpackBinaryAsync(new i.DataReader(c)).then(function(e){u.onCompleteObservable.notifyObservers(u),n(e)},a),u}return e._requestFile(t,function(e,t){var r=e;s._unpackBinaryAsync(new i.DataReader({readAsync:function(e,t){return Promise.resolve(new Uint8Array(r,e,t))},byteLength:r.byteLength})).then(function(e){n(e,t)},a)},r,!0,!0,a)}return e._requestFile(t,function(r,o){s._validate(e,r,i.Tools.GetFolderPath(t),i.Tools.GetFilename(t)),n({json:s._parseJson(r)},o)},r,!0,!1,a)},e.prototype.readFile=function(e,t,n,r,o,a){var s=this;return e._readFile(t,function(r){if(s._validate(e,r,"file:",t.name),o){var l=r;s._unpackBinaryAsync(new i.DataReader({readAsync:function(e,t){return Promise.resolve(new Uint8Array(l,e,t))},byteLength:l.byteLength})).then(n,a)}else n({json:s._parseJson(r)})},r,o,a)},e.prototype.importMeshAsync=function(e,t,n,r,o,a){var i=this;return Promise.resolve().then(function(){return i.onParsedObservable.notifyObservers(n),i.onParsedObservable.clear(),i._log("Loading "+(a||"")),i._loader=i._getLoader(n),i._loader.importMeshAsync(e,t,!1,n,r,o,a)})},e.prototype.loadAsync=function(e,t,n,r,o){var a=this;return Promise.resolve().then(function(){return a.onParsedObservable.notifyObservers(t),a.onParsedObservable.clear(),a._log("Loading "+(o||"")),a._loader=a._getLoader(t),a._loader.loadAsync(e,t,n,r,o)})},e.prototype.loadAssetContainerAsync=function(e,t,n,r,o){var a=this;return Promise.resolve().then(function(){a.onParsedObservable.notifyObservers(t),a.onParsedObservable.clear(),a._log("Loading "+(o||"")),a._loader=a._getLoader(t);var s=[];a.onMaterialLoadedObservable.add(function(e){s.push(e)});var l=[];return a.onTextureLoadedObservable.add(function(e){l.push(e)}),a._loader.importMeshAsync(null,e,!0,t,n,r,o).then(function(t){var n=new i.AssetContainer(e);return Array.prototype.push.apply(n.meshes,t.meshes),Array.prototype.push.apply(n.particleSystems,t.particleSystems),Array.prototype.push.apply(n.skeletons,t.skeletons),Array.prototype.push.apply(n.animationGroups,t.animationGroups),Array.prototype.push.apply(n.materials,s),Array.prototype.push.apply(n.textures,l),Array.prototype.push.apply(n.lights,t.lights),Array.prototype.push.apply(n.transformNodes,t.transformNodes),n})})},e.prototype.canDirectLoad=function(e){return-1!==e.indexOf("asset")&&-1!==e.indexOf("version")},e.prototype.directLoad=function(e,t){return this._validate(e,t),{json:this._parseJson(t)}},e.prototype.createPlugin=function(){return new e},Object.defineProperty(e.prototype,"loaderState",{get:function(){return this._loader?this._loader.state:null},enumerable:!0,configurable:!0}),e.prototype.whenCompleteAsync=function(){var e=this;return new Promise(function(t,n){e.onCompleteObservable.addOnce(function(){t()}),e.onErrorObservable.addOnce(function(e){n(e)})})},e.prototype._validate=function(e,t,n,r){var o=this;void 0===n&&(n=""),void 0===r&&(r=""),this.validate&&(this._startPerformanceCounter("Validate JSON"),s.GLTFValidation.ValidateAsync(t,n,r,function(t){return o.preprocessUrlAsync(n+t).then(function(t){return e._loadFileAsync(t,void 0,!0,!0)})}).then(function(e){o._endPerformanceCounter("Validate JSON"),o.onValidatedObservable.notifyObservers(e),o.onValidatedObservable.clear()},function(e){o._endPerformanceCounter("Validate JSON"),i.Tools.Warn("Failed to validate: "+e.message),o.onValidatedObservable.clear()}))},e.prototype._getLoader=function(t){var n=t.json.asset||{};this._log("Asset version: "+n.version),n.minVersion&&this._log("Asset minimum version: "+n.minVersion),n.generator&&this._log("Asset generator: "+n.generator);var r=e._parseVersion(n.version);if(!r)throw new Error("Invalid version: "+n.version);if(void 0!==n.minVersion){var o=e._parseVersion(n.minVersion);if(!o)throw new Error("Invalid minimum version: "+n.minVersion);if(e._compareVersion(o,{major:2,minor:0})>0)throw new Error("Incompatible minimum version: "+n.minVersion)}var a={1:e._CreateGLTF1Loader,2:e._CreateGLTF2Loader}[r.major];if(!a)throw new Error("Unsupported version: "+n.version);return a(this)},e.prototype._parseJson=function(e){this._startPerformanceCounter("Parse JSON"),this._log("JSON length: "+e.length);var t=JSON.parse(e);return this._endPerformanceCounter("Parse JSON"),t},e.prototype._unpackBinaryAsync=function(e){var t=this;return this._startPerformanceCounter("Unpack Binary"),e.loadAsync(20).then(function(){var n=e.readUint32();if(1179937895!==n)throw new Error("Unexpected magic: "+n);var r=e.readUint32();t.loggingEnabled&&t._log("Binary version: "+r);var o,a=e.readUint32();if(0!=e.buffer.byteLength&&a!==e.buffer.byteLength)throw new Error("Length in header does not match actual data length: "+a+" != "+e.buffer.byteLength);switch(r){case 1:o=t._unpackBinaryV1Async(e,a);break;case 2:o=t._unpackBinaryV2Async(e,a);break;default:throw new Error("Unsupported version: "+r)}return t._endPerformanceCounter("Unpack Binary"),o})},e.prototype._unpackBinaryV1Async=function(e,t){var n=e.readUint32(),r=e.readUint32();if(0!==r)throw new Error("Unexpected content format: "+r);var o=t-e.byteOffset,a={json:this._parseJson(e.readString(n)),bin:null};if(0!==o){var i=e.byteOffset;a.bin={readAsync:function(t,n){return e.buffer.readAsync(i+t,n)},byteLength:o}}return Promise.resolve(a)},e.prototype._unpackBinaryV2Async=function(e,t){var n=this,r=1313821514,o=5130562,a=e.readUint32();if(e.readUint32()!==r)throw new Error("First chunk format is not JSON");return e.byteOffset+a===t?e.loadAsync(a).then(function(){return{json:n._parseJson(e.readString(a)),bin:null}}):e.loadAsync(a+8).then(function(){var i={json:n._parseJson(e.readString(a)),bin:null},s=function(){var n=e.readUint32();switch(e.readUint32()){case r:throw new Error("Unexpected JSON chunk");case o:var a=e.byteOffset;i.bin={readAsync:function(t,n){return e.buffer.readAsync(a+t,n)},byteLength:n},e.skipBytes(n);break;default:e.skipBytes(n)}return e.byteOffset!==t?e.loadAsync(8).then(s):Promise.resolve(i)};return s()})},e._parseVersion=function(e){if("1.0"===e||"1.0.1"===e)return{major:1,minor:0};var t=(e+"").match(/^(\d+)\.(\d+)/);return t?{major:parseInt(t[1]),minor:parseInt(t[2])}:null},e._compareVersion=function(e,t){return e.major>t.major?1:e.major<t.major?-1:e.minor>t.minor?1:e.minor<t.minor?-1:0},e.prototype._logOpen=function(e){this._log(e),this._logIndentLevel++},e.prototype._logClose=function(){--this._logIndentLevel},e.prototype._logEnabled=function(t){var n=e._logSpaces.substr(0,2*this._logIndentLevel);i.Logger.Log(""+n+t)},e.prototype._logDisabled=function(e){},e.prototype._startPerformanceCounterEnabled=function(e){i.Tools.StartPerformanceCounter(e)},e.prototype._startPerformanceCounterDisabled=function(e){},e.prototype._endPerformanceCounterEnabled=function(e){i.Tools.EndPerformanceCounter(e)},e.prototype._endPerformanceCounterDisabled=function(e){},e.IncrementalLoading=!0,e.HomogeneousCoordinates=!1,e._logSpaces="                                ",e}();i.SceneLoader&&i.SceneLoader.RegisterPlugin(new l)},function(e,t,n){"use strict";n.r(t),n.d(t,"GLTFValidation",function(){return a});var r=n(0);function o(e,t,n,r){var o={externalResourceFunction:function(e){return r(e).then(function(e){return new Uint8Array(e)})}};return n&&(o.uri="file:"===t?n:t+n),e instanceof ArrayBuffer?GLTFValidator.validateBytes(new Uint8Array(e),o):GLTFValidator.validateString(e,o)}var a=function(){function e(){}return e.ValidateAsync=function(e,t,n,a){var i=this;return"function"==typeof Worker?new Promise(function(s,l){var u=o+"("+function(){var e=[];onmessage=function(t){var n=t.data;switch(n.id){case"init":importScripts(n.url);break;case"validate":o(n.data,n.rootUrl,n.fileName,function(t){return new Promise(function(n,r){var o=e.length;e.push({resolve:n,reject:r}),postMessage({id:"getExternalResource",index:o,uri:t})})}).then(function(e){postMessage({id:"validate.resolve",value:e})},function(e){postMessage({id:"validate.reject",reason:e})});break;case"getExternalResource.resolve":e[n.index].resolve(n.value);break;case"getExternalResource.reject":e[n.index].reject(n.reason)}}}+")()",c=URL.createObjectURL(new Blob([u],{type:"application/javascript"})),d=new Worker(c),f=function(e){d.removeEventListener("error",f),d.removeEventListener("message",h),l(e)},h=function(e){var t=e.data;switch(t.id){case"getExternalResource":a(t.uri).then(function(e){d.postMessage({id:"getExternalResource.resolve",index:t.index,value:e},[e])},function(e){d.postMessage({id:"getExternalResource.reject",index:t.index,reason:e})});break;case"validate.resolve":d.removeEventListener("error",f),d.removeEventListener("message",h),s(t.value);break;case"validate.reject":d.removeEventListener("error",f),d.removeEventListener("message",h),l(t.reason)}};d.addEventListener("error",f),d.addEventListener("message",h),d.postMessage({id:"init",url:r.Tools.GetAbsoluteUrl(i.Configuration.url)}),d.postMessage({id:"validate",data:e,rootUrl:t,fileName:n})}):(this._LoadScriptPromise||(this._LoadScriptPromise=r.Tools.LoadScriptAsync(this.Configuration.url)),this._LoadScriptPromise.then(function(){return o(e,t,n,a)}))},e.Configuration={url:"https://preview.babylonjs.com/gltf_validator.js"},e}()},function(e,t){var n;n=function(){return this}();try{n=n||new Function("return this")()}catch(e){"object"==typeof window&&(n=window)}e.exports=n},function(e,t,n){"use strict";n.r(t);var r=n(0),o=n(1),a="EXT_lights_image_based",i=function(){function e(e){this.name=a,this._loader=e,this.enabled=this._loader.isExtensionUsed(a)}return e.prototype.dispose=function(){delete this._loader,delete this._lights},e.prototype.onLoading=function(){var e=this._loader.gltf.extensions;if(e&&e[this.name]){var t=e[this.name];this._lights=t.lights}},e.prototype.loadSceneAsync=function(e,t){var n=this;return o.b.LoadExtensionAsync(e,t,this.name,function(r,a){var i=new Array;i.push(n._loader.loadSceneAsync(e,t)),n._loader.logOpen(""+r);var s=o.a.Get(r+"/light",n._lights,a.light);return i.push(n._loadLightAsync("#/extensions/"+n.name+"/lights/"+a.light,s).then(function(e){n._loader.babylonScene.environmentTexture=e})),n._loader.logClose(),Promise.all(i).then(function(){})})},e.prototype._loadLightAsync=function(e,t){var n=this;if(!t._loaded){var a=new Array;this._loader.logOpen(""+e);for(var i=new Array(t.specularImages.length),s=function(n){var r=t.specularImages[n];i[n]=new Array(r.length);for(var s=function(t){var s=e+"/specularImages/"+n+"/"+t;l._loader.logOpen(""+s);var u=r[t],c=o.a.Get(s,l._loader.gltf.images,u);a.push(l._loader.loadImageAsync("#/images/"+u,c).then(function(e){i[n][t]=e})),l._loader.logClose()},u=0;u<r.length;u++)s(u)},l=this,u=0;u<t.specularImages.length;u++)s(u);this._loader.logClose(),t._loaded=Promise.all(a).then(function(){var e=new r.RawCubeTexture(n._loader.babylonScene,null,t.specularImageSize);if(t._babylonTexture=e,null!=t.intensity&&(e.level=t.intensity),t.rotation){var o=r.Quaternion.FromArray(t.rotation);n._loader.babylonScene.useRightHandedSystem||(o=r.Quaternion.Inverse(o)),r.Matrix.FromQuaternionToRef(o,e.getReflectionTextureMatrix())}var a=r.SphericalHarmonics.FromArray(t.irradianceCoefficients);a.scaleInPlace(t.intensity),a.convertIrradianceToLambertianRadiance();var s=r.SphericalPolynomial.FromHarmonics(a),l=(i.length-1)/r.Scalar.Log2(t.specularImageSize);return e.updateRGBDAsync(i,s,l)})}return t._loaded.then(function(){return t._babylonTexture})},e}();o.b.RegisterExtension(a,function(e){return new i(e)});var s="KHR_draco_mesh_compression",l=function(){function e(e){this.name=s,this._loader=e,this.enabled=r.DracoCompression.DecoderAvailable&&this._loader.isExtensionUsed(s)}return e.prototype.dispose=function(){delete this.dracoCompression,delete this._loader},e.prototype._loadVertexDataAsync=function(e,t,n){var a=this;return o.b.LoadExtensionAsync(e,t,this.name,function(i,s){if(null!=t.mode){if(5!==t.mode&&4!==t.mode)throw new Error(e+": Unsupported mode "+t.mode);if(5===t.mode)throw new Error(e+": Mode "+t.mode+" is not currently supported")}var l={},u=function(e,t){var r=s.attributes[e];null!=r&&(n._delayInfo=n._delayInfo||[],-1===n._delayInfo.indexOf(t)&&n._delayInfo.push(t),l[t]=r)};u("POSITION",r.VertexBuffer.PositionKind),u("NORMAL",r.VertexBuffer.NormalKind),u("TANGENT",r.VertexBuffer.TangentKind),u("TEXCOORD_0",r.VertexBuffer.UVKind),u("TEXCOORD_1",r.VertexBuffer.UV2Kind),u("JOINTS_0",r.VertexBuffer.MatricesIndicesKind),u("WEIGHTS_0",r.VertexBuffer.MatricesWeightsKind),u("COLOR_0",r.VertexBuffer.ColorKind);var c=o.a.Get(i,a._loader.gltf.bufferViews,s.bufferView);return c._dracoBabylonGeometry||(c._dracoBabylonGeometry=a._loader.loadBufferViewAsync("#/bufferViews/"+c.index,c).then(function(t){return(a.dracoCompression||r.DracoCompression.Default).decodeMeshAsync(t,l).then(function(e){var t=new r.Geometry(n.name,a._loader.babylonScene);return e.applyToGeometry(t),t}).catch(function(t){throw new Error(e+": "+t.message)})})),c._dracoBabylonGeometry})},e}();o.b.RegisterExtension(s,function(e){return new l(e)});var u,c="KHR_lights_punctual";!function(e){e.DIRECTIONAL="directional",e.POINT="point",e.SPOT="spot"}(u||(u={}));var d=function(){function e(e){this.name=c,this._loader=e,this.enabled=this._loader.isExtensionUsed(c)}return e.prototype.dispose=function(){delete this._loader,delete this._lights},e.prototype.onLoading=function(){var e=this._loader.gltf.extensions;if(e&&e[this.name]){var t=e[this.name];this._lights=t.lights}},e.prototype.loadNodeAsync=function(e,t,n){var a=this;return o.b.LoadExtensionAsync(e,t,this.name,function(i,s){return a._loader.loadNodeAsync(e,t,function(e){var t,l=o.a.Get(i,a._lights,s.light),c=l.name||e.name;switch(a._loader.babylonScene._blockEntityCollection=a._loader._forAssetContainer,l.type){case u.DIRECTIONAL:t=new r.DirectionalLight(c,r.Vector3.Backward(),a._loader.babylonScene);break;case u.POINT:t=new r.PointLight(c,r.Vector3.Zero(),a._loader.babylonScene);break;case u.SPOT:var d=new r.SpotLight(c,r.Vector3.Zero(),r.Vector3.Backward(),0,1,a._loader.babylonScene);d.angle=2*(l.spot&&l.spot.outerConeAngle||Math.PI/4),d.innerAngle=2*(l.spot&&l.spot.innerConeAngle||0),t=d;break;default:throw a._loader.babylonScene._blockEntityCollection=!1,new Error(i+": Invalid light type ("+l.type+")")}a._loader.babylonScene._blockEntityCollection=!1,t.falloffType=r.Light.FALLOFF_GLTF,t.diffuse=l.color?r.Color3.FromArray(l.color):r.Color3.White(),t.intensity=null==l.intensity?1:l.intensity,t.range=null==l.range?Number.MAX_VALUE:l.range,t.parent=e,a._loader._babylonLights.push(t),o.b.AddPointerMetadata(t,i),n(e)})})},e}();o.b.RegisterExtension(c,function(e){return new d(e)});var f="KHR_materials_pbrSpecularGlossiness",h=function(){function e(e){this.name=f,this.order=200,this._loader=e,this.enabled=this._loader.isExtensionUsed(f)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(o,a){var i=new Array;return i.push(r._loader.loadMaterialBasePropertiesAsync(e,t,n)),i.push(r._loadSpecularGlossinessPropertiesAsync(o,t,a,n)),r._loader.loadMaterialAlphaProperties(e,t,n),Promise.all(i).then(function(){})})},e.prototype._loadSpecularGlossinessPropertiesAsync=function(e,t,n,o){if(!(o instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var a=new Array;return o.metallic=null,o.roughness=null,n.diffuseFactor?(o.albedoColor=r.Color3.FromArray(n.diffuseFactor),o.alpha=n.diffuseFactor[3]):o.albedoColor=r.Color3.White(),o.reflectivityColor=n.specularFactor?r.Color3.FromArray(n.specularFactor):r.Color3.White(),o.microSurface=null==n.glossinessFactor?1:n.glossinessFactor,n.diffuseTexture&&a.push(this._loader.loadTextureInfoAsync(e+"/diffuseTexture",n.diffuseTexture,function(e){e.name=o.name+" (Diffuse)",o.albedoTexture=e})),n.specularGlossinessTexture&&(a.push(this._loader.loadTextureInfoAsync(e+"/specularGlossinessTexture",n.specularGlossinessTexture,function(e){e.name=o.name+" (Specular Glossiness)",o.reflectivityTexture=e})),o.reflectivityTexture.hasAlpha=!0,o.useMicroSurfaceFromReflectivityMapAlpha=!0),Promise.all(a).then(function(){})},e}();o.b.RegisterExtension(f,function(e){return new h(e)});var p="KHR_materials_unlit",_=function(){function e(e){this.name=p,this.order=210,this._loader=e,this.enabled=this._loader.isExtensionUsed(p)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(){return r._loadUnlitPropertiesAsync(e,t,n)})},e.prototype._loadUnlitPropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var o=new Array;n.unlit=!0;var a=t.pbrMetallicRoughness;return a&&(a.baseColorFactor?(n.albedoColor=r.Color3.FromArray(a.baseColorFactor),n.alpha=a.baseColorFactor[3]):n.albedoColor=r.Color3.White(),a.baseColorTexture&&o.push(this._loader.loadTextureInfoAsync(e+"/baseColorTexture",a.baseColorTexture,function(e){e.name=n.name+" (Base Color)",n.albedoTexture=e}))),t.doubleSided&&(n.backFaceCulling=!1,n.twoSidedLighting=!0),this._loader.loadMaterialAlphaProperties(e,t,n),Promise.all(o).then(function(){})},e}();o.b.RegisterExtension(p,function(e){return new _(e)});var y="KHR_materials_clearcoat",m=function(){function e(e){this.name=y,this.order=190,this._loader=e,this.enabled=this._loader.isExtensionUsed(y)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(o,a){var i=new Array;return i.push(r._loader.loadMaterialPropertiesAsync(e,t,n)),i.push(r._loadClearCoatPropertiesAsync(o,a,n)),Promise.all(i).then(function(){})})},e.prototype._loadClearCoatPropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var o=new Array;return n.clearCoat.isEnabled=!0,null!=t.clearcoatFactor?n.clearCoat.intensity=t.clearcoatFactor:n.clearCoat.intensity=0,t.clearcoatTexture&&o.push(this._loader.loadTextureInfoAsync(e+"/clearcoatTexture",t.clearcoatTexture,function(e){e.name=n.name+" (ClearCoat Intensity)",n.clearCoat.texture=e})),null!=t.clearcoatRoughnessFactor?n.clearCoat.roughness=t.clearcoatRoughnessFactor:n.clearCoat.roughness=0,t.clearcoatRoughnessTexture&&o.push(this._loader.loadTextureInfoAsync(e+"/clearcoatRoughnessTexture",t.clearcoatRoughnessTexture,function(e){e.name=n.name+" (ClearCoat Roughness)",n.clearCoat.texture=e})),t.clearcoatNormalTexture&&(o.push(this._loader.loadTextureInfoAsync(e+"/clearcoatNormalTexture",t.clearcoatNormalTexture,function(e){e.name=n.name+" (ClearCoat Normal)",n.clearCoat.bumpTexture=e})),n.invertNormalMapX=!n.getScene().useRightHandedSystem,n.invertNormalMapY=n.getScene().useRightHandedSystem,null!=t.clearcoatNormalTexture.scale&&(n.clearCoat.bumpTexture.level=t.clearcoatNormalTexture.scale)),Promise.all(o).then(function(){})},e}();o.b.RegisterExtension(y,function(e){return new m(e)});var b="KHR_materials_sheen",v=function(){function e(e){this.name=b,this.order=190,this._loader=e,this.enabled=this._loader.isExtensionUsed(b)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(o,a){var i=new Array;return i.push(r._loader.loadMaterialPropertiesAsync(e,t,n)),i.push(r._loadSheenPropertiesAsync(o,a,n)),Promise.all(i).then(function(){})})},e.prototype._loadSheenPropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");var o=new Array;return n.sheen.isEnabled=!0,null!=t.intensityFactor?n.sheen.intensity=t.intensityFactor:n.sheen.intensity=0,null!=t.colorFactor&&(n.sheen.color=r.Color3.FromArray(t.colorFactor)),t.colorIntensityTexture&&o.push(this._loader.loadTextureInfoAsync(e+"/sheenTexture",t.colorIntensityTexture,function(e){e.name=n.name+" (Sheen Intensity)",n.sheen.texture=e})),Promise.all(o).then(function(){})},e}();o.b.RegisterExtension(b,function(e){return new v(e)});var g="KHR_materials_specular",A=function(){function e(e){this.name=g,this.order=190,this._loader=e,this.enabled=this._loader.isExtensionUsed(g)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(o,a){var i=new Array;return i.push(r._loader.loadMaterialPropertiesAsync(e,t,n)),i.push(r._loadSpecularPropertiesAsync(o,a,n)),Promise.all(i).then(function(){})})},e.prototype._loadSpecularPropertiesAsync=function(e,t,n){if(!(n instanceof r.PBRMaterial))throw new Error(e+": Material type not supported");return void 0!==t.specularFactor&&(n.metallicF0Factor=t.specularFactor),t.specularTexture&&(n.useMetallicF0FactorFromMetallicTexture=!0),Promise.resolve()},e}();o.b.RegisterExtension(g,function(e){return new A(e)});var x="KHR_mesh_quantization",L=function(){function e(e){this.name=x,this.enabled=e.isExtensionUsed(x)}return e.prototype.dispose=function(){},e}();o.b.RegisterExtension(x,function(e){return new L(e)});var T="KHR_texture_basisu",E=function(){function e(e){this.name=T,this._loader=e,this.enabled=e.isExtensionUsed(T)}return e.prototype.dispose=function(){delete this._loader},e.prototype._loadTextureAsync=function(e,t,n){var r=this;return o.b.LoadExtensionAsync(e,t,this.name,function(a,i){var s=null==t.sampler?o.b.DefaultSampler:o.a.Get(e+"/sampler",r._loader.gltf.samplers,t.sampler),l=o.a.Get(a+"/source",r._loader.gltf.images,i.source);return r._loader._createTextureAsync(e,s,l,function(e){e.gammaSpace=!1,n(e)})})},e}();o.b.RegisterExtension(T,function(e){return new E(e)});var O="KHR_texture_transform",w=function(){function e(e){this.name=O,this._loader=e,this.enabled=this._loader.isExtensionUsed(O)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadTextureInfoAsync=function(e,t,n){var a=this;return o.b.LoadExtensionAsync(e,t,this.name,function(o,i){return a._loader.loadTextureInfoAsync(e,t,function(e){if(!(e instanceof r.Texture))throw new Error(o+": Texture type not supported");i.offset&&(e.uOffset=i.offset[0],e.vOffset=i.offset[1]),e.uRotationCenter=0,e.vRotationCenter=0,i.rotation&&(e.wAng=-i.rotation),i.scale&&(e.uScale=i.scale[0],e.vScale=i.scale[1]),null!=i.texCoord&&(e.coordinatesIndex=i.texCoord),n(e)})})},e}();o.b.RegisterExtension(O,function(e){return new w(e)});var M="MSFT_audio_emitter",S=function(){function e(e){this.name=M,this._loader=e,this.enabled=this._loader.isExtensionUsed(M)}return e.prototype.dispose=function(){delete this._loader,delete this._clips,delete this._emitters},e.prototype.onLoading=function(){var e=this._loader.gltf.extensions;if(e&&e[this.name]){var t=e[this.name];this._clips=t.clips,this._emitters=t.emitters,o.a.Assign(this._clips),o.a.Assign(this._emitters)}},e.prototype.loadSceneAsync=function(e,t){var n=this;return o.b.LoadExtensionAsync(e,t,this.name,function(r,a){var i=new Array;i.push(n._loader.loadSceneAsync(e,t));for(var s=0,l=a.emitters;s<l.length;s++){var u=l[s],c=o.a.Get(r+"/emitters",n._emitters,u);if(null!=c.refDistance||null!=c.maxDistance||null!=c.rolloffFactor||null!=c.distanceModel||null!=c.innerAngle||null!=c.outerAngle)throw new Error(r+": Direction or Distance properties are not allowed on emitters attached to a scene");i.push(n._loadEmitterAsync(r+"/emitters/"+c.index,c))}return Promise.all(i).then(function(){})})},e.prototype.loadNodeAsync=function(e,t,n){var a=this;return o.b.LoadExtensionAsync(e,t,this.name,function(e,i){var s=new Array;return a._loader.loadNodeAsync(e,t,function(t){for(var l=function(n){var i=o.a.Get(e+"/emitters",a._emitters,n);s.push(a._loadEmitterAsync(e+"/emitters/"+i.index,i).then(function(){for(var e=0,n=i._babylonSounds;e<n.length;e++){var o=n[e];o.attachToMesh(t),null==i.innerAngle&&null==i.outerAngle||(o.setLocalDirectionToMesh(r.Vector3.Forward()),o.setDirectionalCone(2*r.Tools.ToDegrees(null==i.innerAngle?Math.PI:i.innerAngle),2*r.Tools.ToDegrees(null==i.outerAngle?Math.PI:i.outerAngle),0))}}))},u=0,c=i.emitters;u<c.length;u++){l(c[u])}n(t)}).then(function(e){return Promise.all(s).then(function(){return e})})})},e.prototype.loadAnimationAsync=function(e,t){var n=this;return o.b.LoadExtensionAsync(e,t,this.name,function(r,a){return n._loader.loadAnimationAsync(e,t).then(function(i){var s=new Array;o.a.Assign(a.events);for(var l=0,u=a.events;l<u.length;l++){var c=u[l];s.push(n._loadAnimationEventAsync(r+"/events/"+c.index,e,t,c,i))}return Promise.all(s).then(function(){return i})})})},e.prototype._loadClipAsync=function(e,t){if(t._objectURL)return t._objectURL;var n;if(t.uri)n=this._loader.loadUriAsync(e,t,t.uri);else{var r=o.a.Get(e+"/bufferView",this._loader.gltf.bufferViews,t.bufferView);n=this._loader.loadBufferViewAsync("#/bufferViews/"+r.index,r)}return t._objectURL=n.then(function(e){return URL.createObjectURL(new Blob([e],{type:t.mimeType}))}),t._objectURL},e.prototype._loadEmitterAsync=function(e,t){var n=this;if(t._babylonSounds=t._babylonSounds||[],!t._babylonData){for(var a=new Array,i=t.name||"emitter"+t.index,s={loop:!1,autoplay:!1,volume:null==t.volume?1:t.volume},l=function(e){var l="#/extensions/"+u.name+"/clips",c=o.a.Get(l,u._clips,t.clips[e].clip);a.push(u._loadClipAsync(l+"/"+t.clips[e].clip,c).then(function(o){var a=t._babylonSounds[e]=new r.Sound(i,o,n._loader.babylonScene,null,s);a.refDistance=t.refDistance||1,a.maxDistance=t.maxDistance||256,a.rolloffFactor=t.rolloffFactor||1,a.distanceModel=t.distanceModel||"exponential",a._positionInEmitterSpace=!0}))},u=this,c=0;c<t.clips.length;c++)l(c);var d=Promise.all(a).then(function(){var e=t.clips.map(function(e){return e.weight||1}),n=new r.WeightedSound(t.loop||!1,t._babylonSounds,e);t.innerAngle&&(n.directionalConeInnerAngle=2*r.Tools.ToDegrees(t.innerAngle)),t.outerAngle&&(n.directionalConeOuterAngle=2*r.Tools.ToDegrees(t.outerAngle)),t.volume&&(n.volume=t.volume),t._babylonData.sound=n});t._babylonData={loaded:d}}return t._babylonData.loaded},e.prototype._getEventAction=function(e,t,n,r,o){switch(n){case"play":return function(e){var n=(o||0)+(e-r);t.play(n)};case"stop":return function(e){t.stop()};case"pause":return function(e){t.pause()};default:throw new Error(e+": Unsupported action "+n)}},e.prototype._loadAnimationEventAsync=function(e,t,n,a,i){var s=this;if(0==i.targetedAnimations.length)return Promise.resolve();var l=i.targetedAnimations[0],u=a.emitter,c=o.a.Get("#/extensions/"+this.name+"/emitters",this._emitters,u);return this._loadEmitterAsync(e,c).then(function(){var t=c._babylonData.sound;if(t){var n=new r.AnimationEvent(a.time,s._getEventAction(e,t,a.action,a.time,a.startOffset));l.animation.addEvent(n),i.onAnimationGroupEndObservable.add(function(){t.stop()}),i.onAnimationGroupPauseObservable.add(function(){t.pause()})}})},e}();o.b.RegisterExtension(M,function(e){return new S(e)});var P="MSFT_lod",C=function(){function e(e){this.name=P,this.order=100,this.maxLODsToLoad=10,this.onNodeLODsLoadedObservable=new r.Observable,this.onMaterialLODsLoadedObservable=new r.Observable,this._nodeIndexLOD=null,this._nodeSignalLODs=new Array,this._nodePromiseLODs=new Array,this._materialIndexLOD=null,this._materialSignalLODs=new Array,this._materialPromiseLODs=new Array,this._indexLOD=null,this._bufferLODs=new Array,this._loader=e,this.enabled=this._loader.isExtensionUsed(P)}return e.prototype.dispose=function(){delete this._loader,this._nodeIndexLOD=null,this._nodeSignalLODs.length=0,this._nodePromiseLODs.length=0,this._materialIndexLOD=null,this._materialSignalLODs.length=0,this._materialPromiseLODs.length=0,this._indexLOD=null,this._bufferLODs.length=0,this.onMaterialLODsLoadedObservable.clear(),this.onNodeLODsLoadedObservable.clear()},e.prototype.onReady=function(){for(var e=this,t=function(t){var r=Promise.all(n._nodePromiseLODs[t]).then(function(){0!==t&&e._loader.endPerformanceCounter("Node LOD "+t),e._loader.log("Loaded node LOD "+t),e.onNodeLODsLoadedObservable.notifyObservers(t),t!==e._nodePromiseLODs.length-1&&(e._loader.startPerformanceCounter("Node LOD "+(t+1)),e._nodeSignalLODs[t]&&e._nodeSignalLODs[t].resolve())});n._loader._completePromises.push(r)},n=this,r=0;r<this._nodePromiseLODs.length;r++)t(r);var o=function(t){var n=Promise.all(a._materialPromiseLODs[t]).then(function(){0!==t&&e._loader.endPerformanceCounter("Material LOD "+t),e._loader.log("Loaded material LOD "+t),e.onMaterialLODsLoadedObservable.notifyObservers(t),t!==e._materialPromiseLODs.length-1&&(e._loader.startPerformanceCounter("Material LOD "+(t+1)),e._materialSignalLODs[t]&&e._materialSignalLODs[t].resolve())});a._loader._completePromises.push(n)},a=this;for(r=0;r<this._materialPromiseLODs.length;r++)o(r);for(r=1;r<this._bufferLODs.length;r++)this._loadBufferLOD(r)},e.prototype.loadSceneAsync=function(e,t){var n=this._loader.loadSceneAsync(e,t);return 0!==this._bufferLODs.length&&this._loadBufferLOD(0),n},e.prototype.loadNodeAsync=function(e,t,n){var a=this;return o.b.LoadExtensionAsync(e,t,this.name,function(e,n){var o,i=a._getLODs(e,t,a._loader.gltf.nodes,n.ids);a._loader.logOpen(""+e);for(var s=function(e){var t=i[e];a._indexLOD=e,0!==e&&(a._nodeIndexLOD=e,a._nodeSignalLODs[e]=a._nodeSignalLODs[e]||new r.Deferred);var n=a._loader.loadNodeAsync("#/nodes/"+t.index,t,function(e){e.setEnabled(!1)}).then(function(t){if(0!==e){var n=i[e-1];n._babylonTransformNode&&(a._disposeTransformNode(n._babylonTransformNode),delete n._babylonTransformNode)}return t.setEnabled(!0),t});0===e?o=n:a._nodeIndexLOD=null,a._indexLOD=null,a._nodePromiseLODs[e]=a._nodePromiseLODs[e]||[],a._nodePromiseLODs[e].push(n)},l=0;l<i.length;l++)s(l);return a._loader.logClose(),o})},e.prototype._loadMaterialAsync=function(e,t,n,r,a){var i=this;return this._indexLOD?null:o.b.LoadExtensionAsync(e,t,this.name,function(e,o){var s,l=i._getLODs(e,t,i._loader.gltf.materials,o.ids);i._loader.logOpen(""+e);for(var u=function(e){var t=l[e];i._indexLOD=e,0!==e&&(i._materialIndexLOD=e);var o=i._loader._loadMaterialAsync("#/materials/"+t.index,t,n,r,function(t){0===e&&a(t)}).then(function(t){if(0!==e){a(t);var n=l[e-1]._data;n[r]&&(i._disposeMaterials([n[r].babylonMaterial]),delete n[r])}return t});0===e?s=o:i._materialIndexLOD=null,i._indexLOD=null,i._materialPromiseLODs[e]=i._materialPromiseLODs[e]||[],i._materialPromiseLODs[e].push(o)},c=0;c<l.length;c++)u(c);return i._loader.logClose(),s})},e.prototype._loadUriAsync=function(e,t,n){var o=this;if(null!==this._materialIndexLOD){this._loader.log("deferred");var a=this._materialIndexLOD-1;return this._materialSignalLODs[a]=this._materialSignalLODs[a]||new r.Deferred,this._materialSignalLODs[a].promise.then(function(){return o._loader.loadUriAsync(e,t,n)})}if(null!==this._nodeIndexLOD){this._loader.log("deferred");a=this._nodeIndexLOD-1;return this._nodeSignalLODs[a]=this._nodeSignalLODs[a]||new r.Deferred,this._nodeSignalLODs[this._nodeIndexLOD-1].promise.then(function(){return o._loader.loadUriAsync(e,t,n)})}return null},e.prototype.loadBufferAsync=function(e,t,n,o){if(this._loader.parent.useRangeRequests&&!t.uri){if(!this._loader.bin)throw new Error(e+": Uri is missing or the binary glTF is missing its binary chunk");var a=this._indexLOD||0,i=n,s=i+o-1,l=this._bufferLODs[a];return l?(l.start=Math.min(l.start,i),l.end=Math.max(l.end,s)):(l={start:i,end:s,loaded:new r.Deferred},this._bufferLODs[a]=l),l.loaded.promise.then(function(e){return new Uint8Array(e.buffer,e.byteOffset+n-l.start,o)})}return null},e.prototype._loadBufferLOD=function(e){var t=this._bufferLODs[e];this._loader.bin.readAsync(t.start,t.end-t.start+1).then(function(e){t.loaded.resolve(e)},function(e){t.loaded.reject(e)})},e.prototype._getLODs=function(e,t,n,r){if(this.maxLODsToLoad<=0)throw new Error("maxLODsToLoad must be greater than zero");for(var a=new Array,i=r.length-1;i>=0;i--)if(a.push(o.a.Get(e+"/ids/"+r[i],n,r[i])),a.length===this.maxLODsToLoad)return a;return a.push(t),a},e.prototype._disposeTransformNode=function(e){var t=this,n=new Array,r=e.material;r&&n.push(r);for(var o=0,a=e.getChildMeshes();o<a.length;o++){var i=a[o];i.material&&n.push(i.material)}e.dispose();var s=n.filter(function(e){return t._loader.babylonScene.meshes.every(function(t){return t.material!=e})});this._disposeMaterials(s)},e.prototype._disposeMaterials=function(e){for(var t={},n=0,r=e;n<r.length;n++){for(var o=0,a=(c=r[n]).getActiveTextures();o<a.length;o++){var i=a[o];t[i.uniqueId]=i}c.dispose()}for(var s in t)for(var l=0,u=this._loader.babylonScene.materials;l<u.length;l++){var c;(c=u[l]).hasTexture(t[s])&&delete t[s]}for(var s in t)t[s].dispose()},e}();o.b.RegisterExtension(P,function(e){return new C(e)});var R="MSFT_minecraftMesh",D=function(){function e(e){this.name=R,this._loader=e,this.enabled=this._loader.isExtensionUsed(R)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var a=this;return o.b.LoadExtraAsync(e,t,this.name,function(o,i){if(i){if(!(n instanceof r.PBRMaterial))throw new Error(o+": Material type not supported");var s=a._loader.loadMaterialPropertiesAsync(e,t,n);return n.needAlphaBlending()&&(n.forceDepthWrite=!0,n.separateCullingPass=!0),n.backFaceCulling=n.forceDepthWrite,n.twoSidedLighting=!0,s}return null})},e}();o.b.RegisterExtension(R,function(e){return new D(e)});var F="MSFT_sRGBFactors",I=function(){function e(e){this.name=F,this._loader=e,this.enabled=this._loader.isExtensionUsed(F)}return e.prototype.dispose=function(){delete this._loader},e.prototype.loadMaterialPropertiesAsync=function(e,t,n){var a=this;return o.b.LoadExtraAsync(e,t,this.name,function(o,i){if(i){if(!(n instanceof r.PBRMaterial))throw new Error(o+": Material type not supported");var s=a._loader.loadMaterialPropertiesAsync(e,t,n);return n.albedoTexture||n.albedoColor.toLinearSpaceToRef(n.albedoColor),n.reflectivityTexture||n.reflectivityColor.toLinearSpaceToRef(n.reflectivityColor),s}return null})},e}();o.b.RegisterExtension(F,function(e){return new I(e)});var B="ExtrasAsMetadata",N=function(){function e(e){this.name=B,this.enabled=!0,this._loader=e}return e.prototype._assignExtras=function(e,t){if(t.extras&&Object.keys(t.extras).length>0){var n=e.metadata=e.metadata||{};(n.gltf=n.gltf||{}).extras=t.extras}},e.prototype.dispose=function(){delete this._loader},e.prototype.loadNodeAsync=function(e,t,n){var r=this;return this._loader.loadNodeAsync(e,t,function(e){r._assignExtras(e,t),n(e)})},e.prototype.loadCameraAsync=function(e,t,n){var r=this;return this._loader.loadCameraAsync(e,t,function(e){r._assignExtras(e,t),n(e)})},e.prototype.createMaterial=function(e,t,n){var r=this._loader.createMaterial(e,t,n);return this._assignExtras(r,t),r},e}();o.b.RegisterExtension(B,function(e){return new N(e)}),n.d(t,"EXT_lights_image_based",function(){return i}),n.d(t,"KHR_draco_mesh_compression",function(){return l}),n.d(t,"KHR_lights",function(){return d}),n.d(t,"KHR_materials_pbrSpecularGlossiness",function(){return h}),n.d(t,"KHR_materials_unlit",function(){return _}),n.d(t,"KHR_materials_clearcoat",function(){return m}),n.d(t,"KHR_materials_sheen",function(){return v}),n.d(t,"KHR_materials_specular",function(){return A}),n.d(t,"KHR_mesh_quantization",function(){return L}),n.d(t,"KHR_texture_basisu",function(){return E}),n.d(t,"KHR_texture_transform",function(){return w}),n.d(t,"MSFT_audio_emitter",function(){return S}),n.d(t,"MSFT_lod",function(){return C}),n.d(t,"MSFT_minecraftMesh",function(){return D}),n.d(t,"MSFT_sRGBFactors",function(){return I}),n.d(t,"ExtrasAsMetadata",function(){return N})},function(e,t,n){"use strict";n.r(t);var r=n(1);n.d(t,"ArrayItem",function(){return r.a}),n.d(t,"GLTFLoader",function(){return r.b});var o=n(5);n.d(t,"EXT_lights_image_based",function(){return o.EXT_lights_image_based}),n.d(t,"KHR_draco_mesh_compression",function(){return o.KHR_draco_mesh_compression}),n.d(t,"KHR_lights",function(){return o.KHR_lights}),n.d(t,"KHR_materials_pbrSpecularGlossiness",function(){return o.KHR_materials_pbrSpecularGlossiness}),n.d(t,"KHR_materials_unlit",function(){return o.KHR_materials_unlit}),n.d(t,"KHR_materials_clearcoat",function(){return o.KHR_materials_clearcoat}),n.d(t,"KHR_materials_sheen",function(){return o.KHR_materials_sheen}),n.d(t,"KHR_materials_specular",function(){return o.KHR_materials_specular}),n.d(t,"KHR_mesh_quantization",function(){return o.KHR_mesh_quantization}),n.d(t,"KHR_texture_basisu",function(){return o.KHR_texture_basisu}),n.d(t,"KHR_texture_transform",function(){return o.KHR_texture_transform}),n.d(t,"MSFT_audio_emitter",function(){return o.MSFT_audio_emitter}),n.d(t,"MSFT_lod",function(){return o.MSFT_lod}),n.d(t,"MSFT_minecraftMesh",function(){return o.MSFT_minecraftMesh}),n.d(t,"MSFT_sRGBFactors",function(){return o.MSFT_sRGBFactors}),n.d(t,"ExtrasAsMetadata",function(){return o.ExtrasAsMetadata})},,,,function(e,t,n){"use strict";(function(e){var r=n(2),o=n(3);n.d(t,"a",function(){return r.GLTFFileLoader}),n.d(t,"b",function(){return r.GLTFLoaderAnimationStartMode}),n.d(t,"c",function(){return r.GLTFLoaderCoordinateSystemMode}),n.d(t,"d",function(){return r.GLTFLoaderState}),n.d(t,"e",function(){return o.GLTFValidation});var a=void 0!==e?e:"undefined"!=typeof window?window:void 0;if(void 0!==a){for(var i in a.BABYLON=a.BABYLON||{},r)a.BABYLON[i]=r[i];for(var i in o)a.BABYLON[i]=o[i]}}).call(this,n(4))},function(e,t){},,function(e,t,n){"use strict";(function(e){var r=n(5),o=n(11),a=n(6);n.d(t,"a",function(){return a});var i=void 0!==e?e:"undefined"!=typeof window?window:void 0;if(void 0!==i){i.BABYLON=i.BABYLON||{};var s=i.BABYLON;s.GLTF2=s.GLTF2||{},s.GLTF2.Loader=s.GLTF2.Loader||{},s.GLTF2.Loader.Extensions=s.GLTF2.Loader.Extensions||{};var l=[];for(var u in r)s.GLTF2.Loader.Extensions[u]=r[u],l.push(u);for(var u in o)s.GLTF2.Loader[u]=o[u],l.push(u);for(var u in a)l.indexOf(u)>-1||(s.GLTF2[u]=a[u])}}).call(this,n(4))},,,,function(e,t,n){"use strict";n.r(t);var r=n(10);n.d(t,"GLTFLoaderCoordinateSystemMode",function(){return r.c}),n.d(t,"GLTFLoaderAnimationStartMode",function(){return r.b}),n.d(t,"GLTFLoaderState",function(){return r.d}),n.d(t,"GLTFFileLoader",function(){return r.a}),n.d(t,"GLTFValidation",function(){return r.e});var o=n(13);n.d(t,"GLTF2",function(){return o.a})}])});