import{bS as e,aY as t,O as s,bT as n,y as r,bU as a,bV as o,bW as i,bX as l,bn as h,bp as d,bo as c,v as u,F as _,bY as p,aV as m,bh as f,bi as b,bZ as y,bJ as g,V as A,M as v,aD as x,aU as M,b_ as w,b$ as C,c0 as E,bk as O,a7 as T,i as L,bv as S,c1 as $,m as P,c2 as R,c3 as k,c4 as I,T as N,bl as B}from"./index-OM-TXt9s.esm.min.js";import{M as V,a as F,F as G}from"./morphTargetManager-DVR41bOb.esm.min.js";import{B as D}from"./bone.pure-DxlM4RQF.esm.min.js";import{S as U}from"./skeleton-CVVbMGoG.esm.min.js";import{A as j}from"./assetContainer-BpKLnjKZ.esm.min.js";import{a as W}from"./objectModelMapping-DA3c5cv8.esm.min.js";class H{constructor(e){this.byteOffset=0,this.buffer=e}async loadAsync(e){const t=await this.buffer.readAsync(this.byteOffset,e);this._dataView=new DataView(t.buffer,t.byteOffset,t.byteLength),this._dataByteOffset=0}readUint32(){const e=this._dataView.getUint32(this._dataByteOffset,!0);return this._dataByteOffset+=4,this.byteOffset+=4,e}readUint8Array(e){const t=new Uint8Array(this._dataView.buffer,this._dataView.byteOffset+this._dataByteOffset,e);return this._dataByteOffset+=e,this.byteOffset+=e,t}readString(t){return e(this.readUint8Array(t))}skipBytes(e){this._dataByteOffset+=e,this.byteOffset+=e}}function K(e,t,s,n){const r={externalResourceFunction:n};return s&&(r.uri="file:"===t?s:t+s),ArrayBuffer.isView(e)?GLTFValidator.validateBytes(e,r):GLTFValidator.validateString(e,r)}function q(){const e=[];onmessage=t=>{const s=t.data;switch(s.id){case"init":importScripts(s.url);break;case"validate":K(s.data,s.rootUrl,s.fileName,t=>new Promise((s,n)=>{const r=e.length;e.push({resolve:s,reject:n}),postMessage({id:"getExternalResource",index:r,uri:t})})).then(e=>{postMessage({id:"validate.resolve",value:e})},e=>{postMessage({id:"validate.reject",reason:e})});break;case"getExternalResource.resolve":e[s.index].resolve(s.value);break;case"getExternalResource.reject":e[s.index].reject(s.reason)}}}class J{static ValidateAsync(e,s,n,r){return"function"==typeof Worker?new Promise((a,o)=>{const i=`${K}(${q})()`,l=URL.createObjectURL(new Blob([i],{type:"application/javascript"})),h=new Worker(l),d=e=>{h.removeEventListener("error",d),h.removeEventListener("message",c),o(e)},c=e=>{const t=e.data;switch(t.id){case"getExternalResource":r(t.uri).then(e=>{h.postMessage({id:"getExternalResource.resolve",index:t.index,value:e},[e.buffer])},e=>{h.postMessage({id:"getExternalResource.reject",index:t.index,reason:e})});break;case"validate.resolve":h.removeEventListener("error",d),h.removeEventListener("message",c),J._LastResults=t.value,a(t.value),h.terminate();break;case"validate.reject":h.removeEventListener("error",d),h.removeEventListener("message",c),o(t.reason),h.terminate()}};if(h.addEventListener("error",d),h.addEventListener("message",c),h.postMessage({id:"init",url:t.GetBabylonScriptURL(this.Configuration.url)}),ArrayBuffer.isView(e)){const t=e.slice();h.postMessage({id:"validate",data:t,rootUrl:s,fileName:n},[t.buffer])}else h.postMessage({id:"validate",data:e,rootUrl:s,fileName:n})}):(this._LoadScriptPromise||(this._LoadScriptPromise=t.LoadBabylonScriptAsync(this.Configuration.url)),this._LoadScriptPromise.then(()=>K(e,s,n,r)))}}function z(e,t,s){try{return Promise.resolve(new Uint8Array(e,t,s))}catch(e){return Promise.reject(e)}}var X,Z,Y;J.Configuration={url:`${t._DefaultCdnUrl}/gltf_validator.js`},J._LastResults=null,function(e){e[e.AUTO=0]="AUTO",e[e.FORCE_RIGHT_HANDED=1]="FORCE_RIGHT_HANDED"}(X||(X={})),function(e){e[e.NONE=0]="NONE",e[e.FIRST=1]="FIRST",e[e.ALL=2]="ALL"}(Z||(Z={})),function(e){e[e.LOADING=0]="LOADING",e[e.READY=1]="READY",e[e.COMPLETE=2]="COMPLETE"}(Y||(Y={}));class Q{constructor(){this.alwaysComputeBoundingBox=!1,this.alwaysComputeSkeletonRootNode=!1,this.animationStartMode=Z.FIRST,this.compileMaterials=!1,this.compileShadowGenerators=!1,this.coordinateSystemMode=X.AUTO,this.createInstances=!0,this.loadAllMaterials=!1,this.loadMorphTargets=!0,this.useMaxMorphTargetInfluencers=!0,this.loadNodeAnimations=!0,this.loadOnlyMaterials=!1,this.loadSkins=!0,this.skipMaterials=!1,this.targetFps=60,this.transparencyAsCoverage=!1,this.useClipPlane=!1,this.useGltfTextureNames=!1,this.useRangeRequests=!1,this.useSRGBBuffers=!0,this.validate=!1,this.useOpenPBR=!1,this.dontUseTransmissionHelper=!1}}const ee=new Q;class te extends Q{constructor(){super(...arguments),this.extensionOptions={},this.preprocessUrlAsync=e=>Promise.resolve(e)}copyFrom(e){e&&(this.alwaysComputeBoundingBox=e.alwaysComputeBoundingBox??this.alwaysComputeBoundingBox,this.alwaysComputeSkeletonRootNode=e.alwaysComputeSkeletonRootNode??this.alwaysComputeSkeletonRootNode,this.animationStartMode=e.animationStartMode??this.animationStartMode,this.capturePerformanceCounters=e.capturePerformanceCounters??this.capturePerformanceCounters,this.compileMaterials=e.compileMaterials??this.compileMaterials,this.compileShadowGenerators=e.compileShadowGenerators??this.compileShadowGenerators,this.coordinateSystemMode=e.coordinateSystemMode??this.coordinateSystemMode,this.createInstances=e.createInstances??this.createInstances,this.customRootNode=e.customRootNode,this.extensionOptions=e.extensionOptions??this.extensionOptions,this.loadAllMaterials=e.loadAllMaterials??this.loadAllMaterials,this.loadMorphTargets=e.loadMorphTargets??this.loadMorphTargets,this.loadNodeAnimations=e.loadNodeAnimations??this.loadNodeAnimations,this.loadOnlyMaterials=e.loadOnlyMaterials??this.loadOnlyMaterials,this.loadSkins=e.loadSkins??this.loadSkins,this.loggingEnabled=e.loggingEnabled??this.loggingEnabled,this.onCameraLoaded=e.onCameraLoaded,this.onMaterialLoaded=e.onMaterialLoaded,this.onMeshLoaded=e.onMeshLoaded,this.onParsed=e.onParsed,this.onSkinLoaded=e.onSkinLoaded,this.onTextureLoaded=e.onTextureLoaded,this.onValidated=e.onValidated,this.preprocessUrlAsync=e.preprocessUrlAsync??this.preprocessUrlAsync,this.skipMaterials=e.skipMaterials??this.skipMaterials,this.targetFps=e.targetFps??this.targetFps,this.transparencyAsCoverage=e.transparencyAsCoverage??this.transparencyAsCoverage,this.useClipPlane=e.useClipPlane??this.useClipPlane,this.useGltfTextureNames=e.useGltfTextureNames??this.useGltfTextureNames,this.useMaxMorphTargetInfluencers=e.useMaxMorphTargetInfluencers??this.useMaxMorphTargetInfluencers,this.useOpenPBR=e.useOpenPBR??this.useOpenPBR,this.useRangeRequests=e.useRangeRequests??this.useRangeRequests,this.useSRGBBuffers=e.useSRGBBuffers??this.useSRGBBuffers,this.validate=e.validate??this.validate,this.dontUseTransmissionHelper=e.dontUseTransmissionHelper??this.dontUseTransmissionHelper)}}class se extends te{constructor(e){super(),this.onParsedObservable=new s,this.onMeshLoadedObservable=new s,this.onSkinLoadedObservable=new s,this.onTextureLoadedObservable=new s,this.onMaterialLoadedObservable=new s,this.onCameraLoadedObservable=new s,this.onCompleteObservable=new s,this.onErrorObservable=new s,this.onDisposeObservable=new s,this.onExtensionLoadedObservable=new s,this.onValidatedObservable=new s,this._loader=null,this._state=null,this._requests=new Array,this.name=n.name,this.extensions=n.extensions,this.onLoaderStateChangedObservable=new s,this._logIndentLevel=0,this._loggingEnabled=!1,this._log=this._logDisabled,this._capturePerformanceCounters=!1,this._startPerformanceCounter=this._startPerformanceCounterDisabled,this._endPerformanceCounter=this._endPerformanceCounterDisabled,this.copyFrom(Object.assign({...ee},e))}set onParsed(e){this._onParsedObserver&&this.onParsedObservable.remove(this._onParsedObserver),e&&(this._onParsedObserver=this.onParsedObservable.add(e))}set onMeshLoaded(e){this._onMeshLoadedObserver&&this.onMeshLoadedObservable.remove(this._onMeshLoadedObserver),e&&(this._onMeshLoadedObserver=this.onMeshLoadedObservable.add(e))}set onSkinLoaded(e){this._onSkinLoadedObserver&&this.onSkinLoadedObservable.remove(this._onSkinLoadedObserver),e&&(this._onSkinLoadedObserver=this.onSkinLoadedObservable.add(t=>e(t.node,t.skinnedNode)))}set onTextureLoaded(e){this._onTextureLoadedObserver&&this.onTextureLoadedObservable.remove(this._onTextureLoadedObserver),e&&(this._onTextureLoadedObserver=this.onTextureLoadedObservable.add(e))}set onMaterialLoaded(e){this._onMaterialLoadedObserver&&this.onMaterialLoadedObservable.remove(this._onMaterialLoadedObserver),e&&(this._onMaterialLoadedObserver=this.onMaterialLoadedObservable.add(e))}set onCameraLoaded(e){this._onCameraLoadedObserver&&this.onCameraLoadedObservable.remove(this._onCameraLoadedObserver),e&&(this._onCameraLoadedObserver=this.onCameraLoadedObservable.add(e))}set onComplete(e){this._onCompleteObserver&&this.onCompleteObservable.remove(this._onCompleteObserver),this._onCompleteObserver=this.onCompleteObservable.add(e)}set onError(e){this._onErrorObserver&&this.onErrorObservable.remove(this._onErrorObserver),this._onErrorObserver=this.onErrorObservable.add(e)}set onDispose(e){this._onDisposeObserver&&this.onDisposeObservable.remove(this._onDisposeObserver),this._onDisposeObserver=this.onDisposeObservable.add(e)}set onExtensionLoaded(e){this._onExtensionLoadedObserver&&this.onExtensionLoadedObservable.remove(this._onExtensionLoadedObserver),this._onExtensionLoadedObserver=this.onExtensionLoadedObservable.add(e)}get loggingEnabled(){return this._loggingEnabled}set loggingEnabled(e){this._loggingEnabled!==e&&(this._loggingEnabled=e,this._loggingEnabled?this._log=this._logEnabled:this._log=this._logDisabled)}get capturePerformanceCounters(){return this._capturePerformanceCounters}set capturePerformanceCounters(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))}set onValidated(e){this._onValidatedObserver&&this.onValidatedObservable.remove(this._onValidatedObserver),this._onValidatedObserver=this.onValidatedObservable.add(e)}dispose(){this._loader&&(this._loader.dispose(),this._loader=null);for(const e of this._requests)e.abort();this._requests.length=0,delete this._progressCallback,this.preprocessUrlAsync=e=>Promise.resolve(e),this.onMeshLoadedObservable.clear(),this.onSkinLoadedObservable.clear(),this.onTextureLoadedObservable.clear(),this.onMaterialLoadedObservable.clear(),this.onCameraLoadedObservable.clear(),this.onCompleteObservable.clear(),this.onExtensionLoadedObservable.clear(),this.onDisposeObservable.notifyObservers(void 0),this.onDisposeObservable.clear()}loadFile(e,n,a,o,i,l,h,d){if(ArrayBuffer.isView(n))return this._loadBinary(e,n,a,o,h,d),null;this._progressCallback=i;const c=n.name||t.GetFilename(n);if(l){if(this.useRangeRequests){this.validate&&r.Warn("glTF validation is not supported when range requests are enabled");const t={abort:()=>{},onCompleteObservable:new s},a={readAsync:(t,s)=>new Promise((r,a)=>{this._loadFile(e,n,e=>{r(new Uint8Array(e))},!0,e=>{a(e)},e=>{e.setRequestHeader("Range",`bytes=${t}-${t+s-1}`)})}),byteLength:0};return this._unpackBinaryAsync(new H(a)).then(e=>{t.onCompleteObservable.notifyObservers(t),o(e)},h?e=>h(void 0,e):void 0),t}return this._loadFile(e,n,t=>{this._validate(e,new Uint8Array(t,0,t.byteLength),a,c),this._unpackBinaryAsync(new H({readAsync:(e,s)=>z(t,e,s),byteLength:t.byteLength})).then(e=>{o(e)},h?e=>h(void 0,e):void 0)},!0,h)}return this._loadFile(e,n,t=>{try{this._validate(e,t,a,c),o({json:this._parseJson(t)})}catch{h&&h()}},!1,h)}_loadBinary(e,t,s,n,r,a){this._validate(e,new Uint8Array(t.buffer,t.byteOffset,t.byteLength),s,a),this._unpackBinaryAsync(new H({readAsync:(e,s)=>function(e,t,s){try{if(t<0||t>=e.byteLength)throw new RangeError("Offset is out of range.");if(t+s>e.byteLength)throw new RangeError("Length is out of range.");return Promise.resolve(new Uint8Array(e.buffer,e.byteOffset+t,s))}catch(e){return Promise.reject(e)}}(t,e,s),byteLength:t.byteLength})).then(e=>{n(e)},r?e=>r(void 0,e):void 0)}importMeshAsync(e,t,s,n,r,a){return Promise.resolve().then(()=>(this.onParsedObservable.notifyObservers(s),this.onParsedObservable.clear(),this._log(`Loading ${a||""}`),this._loader=this._getLoader(s),this._loader.importMeshAsync(e,t,null,s,n,r,a)))}loadAsync(e,t,s,n,r){return Promise.resolve().then(()=>(this.onParsedObservable.notifyObservers(t),this.onParsedObservable.clear(),this._log(`Loading ${r||""}`),this._loader=this._getLoader(t),this._loader.loadAsync(e,t,s,n,r)))}loadAssetContainerAsync(e,t,s,n,r){return Promise.resolve().then(()=>{this.onParsedObservable.notifyObservers(t),this.onParsedObservable.clear(),this._log(`Loading ${r||""}`),this._loader=this._getLoader(t);const a=new j(e),o=[];this.onMaterialLoadedObservable.add(e=>{o.push(e)});const i=[];this.onTextureLoadedObservable.add(e=>{i.push(e)});const l=[];this.onCameraLoadedObservable.add(e=>{l.push(e)});const h=[];return this.onMeshLoadedObservable.add(e=>{e.morphTargetManager&&h.push(e.morphTargetManager)}),this._loader.importMeshAsync(null,e,a,t,s,n,r).then(e=>(Array.prototype.push.apply(a.geometries,e.geometries),Array.prototype.push.apply(a.meshes,e.meshes),Array.prototype.push.apply(a.particleSystems,e.particleSystems),Array.prototype.push.apply(a.skeletons,e.skeletons),Array.prototype.push.apply(a.animationGroups,e.animationGroups),Array.prototype.push.apply(a.materials,o),Array.prototype.push.apply(a.textures,i),Array.prototype.push.apply(a.lights,e.lights),Array.prototype.push.apply(a.transformNodes,e.transformNodes),Array.prototype.push.apply(a.cameras,l),Array.prototype.push.apply(a.morphTargetManagers,h),a))})}canDirectLoad(e){return n.canDirectLoad(e)}directLoad(e,t){if(t.startsWith("base64,"+a)||t.startsWith(";base64,"+a)||t.startsWith("application/octet-stream;base64,"+a)||t.startsWith("model/gltf-binary;base64,"+a)){const s=o(t);return this._validate(e,new Uint8Array(s,0,s.byteLength)),this._unpackBinaryAsync(new H({readAsync:(e,t)=>z(s,e,t),byteLength:s.byteLength}))}return this._validate(e,t),Promise.resolve({json:this._parseJson(t)})}createPlugin(e){return new se(e[n.name])}get loaderState(){return this._state}whenCompleteAsync(){return new Promise((e,t)=>{this.onCompleteObservable.addOnce(()=>{e()}),this.onErrorObservable.addOnce(e=>{t(e)})})}_setState(e){this._state!==e&&(this._state=e,this.onLoaderStateChangedObservable.notifyObservers(this._state),this._log(Y[this._state]))}_loadFile(e,t,s,n,r,a){const o=e._loadFile(t,s,e=>{this._onProgress(e,o)},!0,n,r,a);return o.onCompleteObservable.add(()=>{o._lengthComputable=!0,o._total=o._loaded}),this._requests.push(o),o}_onProgress(e,t){if(!this._progressCallback)return;t._lengthComputable=e.lengthComputable,t._loaded=e.loaded,t._total=e.total;let s=!0,n=0,r=0;for(const e of this._requests){if(void 0===e._lengthComputable||void 0===e._loaded||void 0===e._total)return;s=s&&e._lengthComputable,n+=e._loaded,r+=e._total}this._progressCallback({lengthComputable:s,loaded:n,total:s?r:0})}_validate(e,s,n="",r=""){this.validate&&(this._startPerformanceCounter("Validate JSON"),J.ValidateAsync(s,n,r,t=>this.preprocessUrlAsync(n+t).then(t=>e._loadFileAsync(t,void 0,!0,!0).then(e=>new Uint8Array(e,0,e.byteLength)))).then(e=>{this._endPerformanceCounter("Validate JSON"),this.onValidatedObservable.notifyObservers(e),this.onValidatedObservable.clear()},e=>{this._endPerformanceCounter("Validate JSON"),t.Warn(`Failed to validate: ${e.message}`),this.onValidatedObservable.clear()}))}_getLoader(e){const t=e.json.asset||{};this._log(`Asset version: ${t.version}`),t.minVersion&&this._log(`Asset minimum version: ${t.minVersion}`),t.generator&&this._log(`Asset generator: ${t.generator}`);const s=se._parseVersion(t.version);if(!s)throw new Error("Invalid version: "+t.version);if(void 0!==t.minVersion){const e=se._parseVersion(t.minVersion);if(!e)throw new Error("Invalid minimum version: "+t.minVersion);if(se._compareVersion(e,{major:2,minor:0})>0)throw new Error("Incompatible minimum version: "+t.minVersion)}const n={1:se._CreateGLTF1Loader,2:se._CreateGLTF2Loader}[s.major];if(!n)throw new Error("Unsupported version: "+t.version);return n(this)}_parseJson(e){this._startPerformanceCounter("Parse JSON"),this._log(`JSON length: ${e.length}`);const t=JSON.parse(e);return this._endPerformanceCounter("Parse JSON"),t}_unpackBinaryAsync(e){return this._startPerformanceCounter("Unpack Binary"),e.loadAsync(20).then(()=>{const t=e.readUint32();if(1179937895!==t)throw new i("Unexpected magic: "+t,l.GLTFLoaderUnexpectedMagicError);const s=e.readUint32();this.loggingEnabled&&this._log(`Binary version: ${s}`);const n=e.readUint32();let a;switch(this.useRangeRequests||n===e.buffer.byteLength||r.Warn(`Length in header does not match actual data length: ${n} != ${e.buffer.byteLength}`),s){case 1:a=this._unpackBinaryV1Async(e,n);break;case 2:a=this._unpackBinaryV2Async(e,n);break;default:throw new Error("Unsupported version: "+s)}return this._endPerformanceCounter("Unpack Binary"),a})}_unpackBinaryV1Async(e,t){const s=e.readUint32(),n=e.readUint32();if(0!==n)throw new Error(`Unexpected content format: ${n}`);const r=t-e.byteOffset,a={json:this._parseJson(e.readString(s)),bin:null};if(0!==r){const t=e.byteOffset;a.bin={readAsync:(s,n)=>e.buffer.readAsync(t+s,n),byteLength:r}}return Promise.resolve(a)}_unpackBinaryV2Async(e,t){const s=1313821514,n=5130562,r=e.readUint32();if(e.readUint32()!==s)throw new Error("First chunk format is not JSON");return e.byteOffset+r===t?e.loadAsync(r).then(()=>({json:this._parseJson(e.readString(r)),bin:null})):e.loadAsync(r+8).then(()=>{const a={json:this._parseJson(e.readString(r)),bin:null},o=()=>{const r=e.readUint32();switch(e.readUint32()){case s:throw new Error("Unexpected JSON chunk");case n:{const t=e.byteOffset;a.bin={readAsync:(s,n)=>e.buffer.readAsync(t+s,n),byteLength:r},e.skipBytes(r);break}default:e.skipBytes(r)}return e.byteOffset!==t?e.loadAsync(8).then(o):Promise.resolve(a)};return o()})}static _parseVersion(e){if("1.0"===e||"1.0.1"===e)return{major:1,minor:0};const t=(e+"").match(/^(\d+)\.(\d+)/);return t?{major:parseInt(t[1]),minor:parseInt(t[2])}:null}static _compareVersion(e,t){return e.major>t.major?1:e.major<t.major?-1:e.minor>t.minor?1:e.minor<t.minor?-1:0}_logOpen(e){this._log(e),this._logIndentLevel++}_logClose(){--this._logIndentLevel}_logEnabled(e){const t=se._logSpaces.substring(0,2*this._logIndentLevel);r.Log(`${t}${e}`)}_logDisabled(e){}_startPerformanceCounterEnabled(e){t.StartPerformanceCounter(e)}_startPerformanceCounterDisabled(e){}_endPerformanceCounterEnabled(e){t.EndPerformanceCounter(e)}_endPerformanceCounterDisabled(e){}}se.IncrementalLoading=!0,se.HomogeneousCoordinates=!1,se._logSpaces="                                ";let ne=!1;function re(){ne||(ne=!0,h(new se))}const ae=new w(()=>import("./animationGroup-B7hqXekV.esm.min.js")),oe=new w(()=>import("./glTFLoaderAnimation-BgFNOKW_.esm.min.js"));class ie{static Get(e,t,s){if(!t||null==s||!t[s])throw new Error(`${e}: Failed to find index (${s})`);return t[s]}static TryGet(e,t){return e&&null!=t&&e[t]?e[t]:null}static Assign(e){if(e)for(let t=0;t<e.length;t++)e[t].index=t}}function le(e){if(e.min&&e.max){const t=e.min,s=e.max,n=N.Vector3[0].copyFromFloats(t[0],t[1],t[2]),r=N.Vector3[1].copyFromFloats(s[0],s[1],s[2]);if(e.normalized&&5126!==e.componentType){let t=1;switch(e.componentType){case 5120:t=127;break;case 5121:t=255;break;case 5122:t=32767;break;case 5123:t=65535}const s=1/t;n.scaleInPlace(s),r.scaleInPlace(s)}return new B(n,r)}return null}class he{isMatchingMaterialType(e){if(!e)return!1;const t=Array.from(this._pbrMaterialImpls.values());for(const s of t)if(e instanceof s.materialClass)return!0;return!1}static RegisterExtension(e,t){d(e,!1,t)}static UnregisterExtension(e){return c(e)}get gltf(){if(!this._gltf)throw new Error("glTF JSON is not available");return this._gltf}get bin(){return this._bin}get parent(){return this._parent}get babylonScene(){if(!this._babylonScene)throw new Error("Scene is not available");return this._babylonScene}get rootBabylonMesh(){return this._rootBabylonMesh}get rootUrl(){return this._rootUrl}constructor(e){this._completePromises=new Array,this._assetContainer=null,this._babylonLights=[],this._disableInstancedMesh=0,this._allMaterialsDirtyRequired=!1,this._skipStartAnimationStep=!1,this._extensions=new Array,this._disposed=!1,this._rootUrl=null,this._fileName=null,this._uniqueRootUrl=null,this._bin=null,this._rootBabylonMesh=null,this._defaultBabylonMaterialData={},this._postSceneLoadActions=new Array,this._materialAdapterCache=new WeakMap,this._materialAdapters=new Set,this._pbrMaterialImpls=new Map,this._parent=e}_getOrCreateMaterialAdapter(e){let t=this._materialAdapterCache.get(e);if(!t){const s=Array.from(this._pbrMaterialImpls.values());for(const n of s)if(e instanceof n.materialClass){t=new n.adapterClass(e);break}if(!t)throw new Error("Appropriate material adapter class not found");const n=t;this._materialAdapterCache.set(e,n),this._materialAdapters.add(n)}return t}dispose(){this._disposed||(this._disposed=!0,this._completePromises.length=0,this._extensions.forEach(e=>e.dispose&&e.dispose()),this._extensions.length=0,this._materialAdapters.clear(),this._gltf=null,this._bin=null,this._babylonScene=null,this._rootBabylonMesh=null,this._defaultBabylonMaterialData={},this._postSceneLoadActions.length=0,this._parent.dispose())}async importMeshAsync(e,t,s,n,r,a,o=""){return await Promise.resolve().then(async()=>{this._babylonScene=t,this._assetContainer=s,this._loadData(n);let a=null;if(e){const t={};if(this._gltf.nodes)for(const e of this._gltf.nodes)e.name&&(t[e.name]=e.index);a=(e instanceof Array?e:[e]).map(e=>{const s=t[e];if(void 0===s)throw new Error(`Failed to find node '${e}'`);return s})}return await this._loadAsync(r,o,a,()=>({meshes:this._getMeshes(),particleSystems:[],skeletons:this._getSkeletons(),animationGroups:this._getAnimationGroups(),lights:this._babylonLights,transformNodes:this._getTransformNodes(),geometries:this._getGeometries(),spriteManagers:[]}))})}async loadAsync(e,t,s,n,r=""){return this._babylonScene=e,this._loadData(t),await this._loadAsync(s,r,null,()=>{})}async _loadAsync(e,s,n,r){return await Promise.resolve().then(async()=>{if(this._rootUrl=e,this._uniqueRootUrl=!e.startsWith("file:")&&s?e:`${e}${u()}/`,this._fileName=s,this._allMaterialsDirtyRequired=!1,await this._loadExtensionsAsync(),!this.parent.skipMaterials){const e=this.parent.useOpenPBR||this.isExtensionUsed("KHR_materials_openpbr");let t=!1;this.parent.useOpenPBR?this._gltf.materials?.length&&this._gltf.materials.some(e=>!e.extensions?.KHR_materials_openpbr)&&(t=!0):t=!0;const s=[];e&&!this._pbrMaterialImpls.has("openpbr")&&s.push(Promise.all([import("./openpbrMaterial.pure-BY1g_qSX.esm.min.js"),import("./openpbrMaterialLoadingAdapter-2hu6SWxY.esm.min.js")]).then(([{OpenPBRMaterial:e,RegisterOpenpbrMaterial:t},{OpenPBRMaterialLoadingAdapter:s}])=>{t(),this._pbrMaterialImpls.set("openpbr",{materialClass:e,adapterClass:s})})),t&&!this._pbrMaterialImpls.has("pbr")&&s.push(Promise.all([import("./pbrMaterial.pure-CIUhGjHW.esm.min.js"),import("./pbrMaterialLoadingAdapter-F7z7i2rR.esm.min.js")]).then(([{PBRMaterial:e,RegisterPbrMaterial:t},{PBRMaterialLoadingAdapter:s}])=>{t(),this._pbrMaterialImpls.set("pbr",{materialClass:e,adapterClass:s})})),await Promise.all(s)}const a=`${Y[Y.LOADING]} => ${Y[Y.READY]}`,o=`${Y[Y.LOADING]} => ${Y[Y.COMPLETE]}`;this._parent._startPerformanceCounter(a),this._parent._startPerformanceCounter(o),this._parent._setState(Y.LOADING),this._extensionsOnLoading();const i=new Array,l=this._babylonScene.blockMaterialDirtyMechanism;if(this._babylonScene.blockMaterialDirtyMechanism=!0,!this.parent.loadOnlyMaterials)if(n)i.push(this.loadSceneAsync("/nodes",{nodes:n,index:-1}));else if(null!=this._gltf.scene||this._gltf.scenes&&this._gltf.scenes[0]){const e=ie.Get("/scene",this._gltf.scenes,this._gltf.scene||0);i.push(this.loadSceneAsync(`/scenes/${e.index}`,e))}if(!this.parent.skipMaterials&&this.parent.loadAllMaterials&&this._gltf.materials)for(let e=0;e<this._gltf.materials.length;++e){const t=this._gltf.materials[e],s="/materials/"+e,n=_.TriangleFillMode;i.push(this._loadMaterialAsync(s,t,null,n,()=>{}))}this._allMaterialsDirtyRequired?this._babylonScene.blockMaterialDirtyMechanism=l:this._babylonScene._forceBlockMaterialDirtyMechanism(l),this._parent.compileMaterials&&i.push(this._compileMaterialsAsync()),this._parent.compileShadowGenerators&&i.push(this._compileShadowGeneratorsAsync());const h=Promise.all(i).then(()=>{this._rootBabylonMesh&&this._rootBabylonMesh!==this._parent.customRootNode&&this._rootBabylonMesh.setEnabled(!0);for(const e of this._babylonScene.materials){const t=e;void 0!==t.maxSimultaneousLights&&(t.maxSimultaneousLights=Math.max(t.maxSimultaneousLights,this._babylonScene.lights.length))}for(const e of Array.from(this._materialAdapters))this._completePromises.push(e.finalizeAsync(this));return this._extensionsOnReady(),this._parent._setState(Y.READY),this._skipStartAnimationStep||this._startAnimations(),r()});return await h.then(e=>(this._parent._endPerformanceCounter(a),t.SetImmediate(()=>{this._disposed||Promise.all(this._completePromises).then(()=>{this._parent._endPerformanceCounter(o),this._parent._setState(Y.COMPLETE),this._parent.onCompleteObservable.notifyObservers(void 0),this._parent.onCompleteObservable.clear(),this.dispose()},e=>{this._parent.onErrorObservable.notifyObservers(e),this._parent.onErrorObservable.clear(),this.dispose()})}),e))}).catch(e=>{throw this._disposed||(this._parent.onErrorObservable.notifyObservers(e),this._parent.onErrorObservable.clear(),this.dispose()),e})}_loadData(e){if(this._gltf=e.json,this._setupData(),e.bin){const t=this._gltf.buffers;if(t&&t[0]&&!t[0].uri){const s=t[0];(s.byteLength<e.bin.byteLength-3||s.byteLength>e.bin.byteLength)&&r.Warn(`Binary buffer length (${s.byteLength}) from JSON does not match chunk length (${e.bin.byteLength})`),this._bin=e.bin}else r.Warn("Unexpected BIN chunk")}}_setupData(){if(ie.Assign(this._gltf.accessors),ie.Assign(this._gltf.animations),ie.Assign(this._gltf.buffers),ie.Assign(this._gltf.bufferViews),ie.Assign(this._gltf.cameras),ie.Assign(this._gltf.images),ie.Assign(this._gltf.materials),ie.Assign(this._gltf.meshes),ie.Assign(this._gltf.nodes),ie.Assign(this._gltf.samplers),ie.Assign(this._gltf.scenes),ie.Assign(this._gltf.skins),ie.Assign(this._gltf.textures),this._gltf.nodes){const e={};for(const t of this._gltf.nodes)if(t.children)for(const s of t.children)e[s]=t.index;const t=this._createRootNode();for(const s of this._gltf.nodes){const n=e[s.index];s.parent=void 0===n?t:this._gltf.nodes[n]}}}async _loadExtensionsAsync(){const e=[];if(p.forEach((t,s)=>{!1===this.parent.extensionOptions[s]?.enabled?t.isGLTFExtension&&this.isExtensionUsed(s)&&r.Warn(`Extension ${s} is used but has been explicitly disabled.`):t.isGLTFExtension&&!this.isExtensionUsed(s)||e.push((async()=>{const e=await t.factory(this);return e.name!==s&&r.Warn(`The name of the glTF loader extension instance does not match the registered name: ${e.name} !== ${s}`),this._parent.onExtensionLoadedObservable.notifyObservers(e),e})())}),this._extensions.push(...await Promise.all(e)),this._extensions.sort((e,t)=>(e.order||Number.MAX_VALUE)-(t.order||Number.MAX_VALUE)),this._parent.onExtensionLoadedObservable.clear(),this._gltf.extensionsRequired)for(const e of this._gltf.extensionsRequired){if(!this._extensions.some(t=>t.name===e&&t.enabled)){if(!1===this.parent.extensionOptions[e]?.enabled)throw new Error(`Required extension ${e} is disabled`);throw new Error(`Required extension ${e} is not available`)}}}_createRootNode(){if(void 0!==this._parent.customRootNode)return this._rootBabylonMesh=this._parent.customRootNode,{_babylonTransformNode:null===this._rootBabylonMesh?void 0:this._rootBabylonMesh,index:-1};this._babylonScene._blockEntityCollection=!!this._assetContainer;const e=new m("__root__",this._babylonScene);this._rootBabylonMesh=e,this._rootBabylonMesh._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,this._rootBabylonMesh.setEnabled(!1);const t={_babylonTransformNode:this._rootBabylonMesh,index:-1};switch(this._parent.coordinateSystemMode){case X.AUTO:this._babylonScene.useRightHandedSystem||(t.rotation=[0,1,0,0],t.scale=[1,1,-1],he._LoadTransform(t,this._rootBabylonMesh));break;case X.FORCE_RIGHT_HANDED:this._babylonScene.useRightHandedSystem=!0;break;default:throw new Error(`Invalid coordinate system mode (${this._parent.coordinateSystemMode})`)}return this._parent.onMeshLoadedObservable.notifyObservers(e),t}loadSceneAsync(e,t){const s=this._extensionsLoadSceneAsync(e,t);if(s)return s;const n=new Array;if(this.logOpen(`${e} ${t.name||""}`),t.nodes)for(const s of t.nodes){const t=ie.Get(`${e}/nodes/${s}`,this._gltf.nodes,s);n.push(this.loadNodeAsync(`/nodes/${t.index}`,t,e=>{e.parent=this._rootBabylonMesh}))}for(const e of this._postSceneLoadActions)e();return n.push(this._loadAnimationsAsync()),this.logClose(),Promise.all(n).then(()=>{})}_forEachPrimitive(e,t){if(e._primitiveBabylonMeshes)for(const s of e._primitiveBabylonMeshes)t(s)}_getGeometries(){const e=[],t=this._gltf.nodes;if(t)for(const s of t)this._forEachPrimitive(s,t=>{const s=t.geometry;s&&-1===e.indexOf(s)&&e.push(s)});return e}_getMeshes(){const e=[];this._rootBabylonMesh instanceof f&&e.push(this._rootBabylonMesh);const t=this._gltf.nodes;if(t)for(const s of t)this._forEachPrimitive(s,t=>{e.push(t)});return e}_getTransformNodes(){const e=[],t=this._gltf.nodes;if(t)for(const s of t)s._babylonTransformNode&&"TransformNode"===s._babylonTransformNode.getClassName()&&e.push(s._babylonTransformNode),s._babylonTransformNodeForSkin&&e.push(s._babylonTransformNodeForSkin);return e}_getSkeletons(){const e=[],t=this._gltf.skins;if(t)for(const s of t)s._data&&e.push(s._data.babylonSkeleton);return e}_getAnimationGroups(){const e=[],t=this._gltf.animations;if(t)for(const s of t)s._babylonAnimationGroup&&e.push(s._babylonAnimationGroup);return e}_startAnimations(){switch(this._parent.animationStartMode){case Z.NONE:break;case Z.FIRST:{const e=this._getAnimationGroups();0!==e.length&&e[0].start(!0);break}case Z.ALL:{const e=this._getAnimationGroups();for(const t of e)t.start(!0);break}default:return void r.Error(`Invalid animation start mode (${this._parent.animationStartMode})`)}}loadNodeAsync(e,t,s=()=>{}){const n=this._extensionsLoadNodeAsync(e,t,s);if(n)return n;if(t._babylonTransformNode)throw new Error(`${e}: Invalid recursive node hierarchy`);const r=new Array;this.logOpen(`${e} ${t.name||""}`);const a=n=>{if(he.AddPointerMetadata(n,e),he._LoadTransform(t,n),null!=t.camera){const s=ie.Get(`${e}/camera`,this._gltf.cameras,t.camera);r.push(this.loadCameraAsync(`/cameras/${s.index}`,s,e=>{e.parent=n,this._babylonScene.useRightHandedSystem||(n.scaling.x=-1)}))}if(t.children)for(const s of t.children){const t=ie.Get(`${e}/children/${s}`,this._gltf.nodes,s);r.push(this.loadNodeAsync(`/nodes/${t.index}`,t,e=>{e.parent=n}))}s(n)},o=null!=t.mesh,i=this._parent.loadSkins&&null!=t.skin;if(!o||i){const e=t.name||`node${t.index}`;this._babylonScene._blockEntityCollection=!!this._assetContainer;const s=new b(e,this._babylonScene);s._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,null==t.mesh?t._babylonTransformNode=s:t._babylonTransformNodeForSkin=s,a(s)}if(o)if(i){const s=ie.Get(`${e}/mesh`,this._gltf.meshes,t.mesh);r.push(this._loadMeshAsync(`/meshes/${s.index}`,t,s,s=>{const n=t._babylonTransformNodeForSkin;s.metadata=y(n.metadata,s.metadata||{});const a=ie.Get(`${e}/skin`,this._gltf.skins,t.skin);r.push(this._loadSkinAsync(`/skins/${a.index}`,t,a,e=>{this._forEachPrimitive(t,t=>{t.skeleton=e}),this._postSceneLoadActions.push(()=>{if(null!=a.skeleton){const e=ie.Get(`/skins/${a.index}/skeleton`,this._gltf.nodes,a.skeleton).parent;t.index===e.index?s.parent=n.parent:s.parent=e._babylonTransformNode}else s.parent=this._rootBabylonMesh;this._parent.onSkinLoadedObservable.notifyObservers({node:n,skinnedNode:s})})}))}))}else{const s=ie.Get(`${e}/mesh`,this._gltf.meshes,t.mesh);r.push(this._loadMeshAsync(`/meshes/${s.index}`,t,s,a))}return this.logClose(),Promise.all(r).then(()=>(this._forEachPrimitive(t,e=>{const t=e;!t.isAnInstance&&t.geometry&&t.geometry.useBoundingInfoFromGeometry?e._updateBoundingInfo():e.refreshBoundingInfo(!0,!0)}),t._babylonTransformNode))}_loadMeshAsync(e,t,s,n){const r=s.primitives;if(!r||!r.length)throw new Error(`${e}: Primitives are missing`);null==r[0].index&&ie.Assign(r);const a=new Array;this.logOpen(`${e} ${s.name||""}`);const o=t.name||`node${t.index}`;if(1===r.length){const n=s.primitives[0];a.push(this._loadMeshPrimitiveAsync(`${e}/primitives/${n.index}`,o,t,s,n,e=>{t._babylonTransformNode=e,t._primitiveBabylonMeshes=[e]}))}else{this._babylonScene._blockEntityCollection=!!this._assetContainer,t._babylonTransformNode=new b(o,this._babylonScene),t._babylonTransformNode._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,t._primitiveBabylonMeshes=[];for(const n of r)a.push(this._loadMeshPrimitiveAsync(`${e}/primitives/${n.index}`,`${o}_primitive${n.index}`,t,s,n,e=>{e.parent=t._babylonTransformNode,t._primitiveBabylonMeshes.push(e)}))}return n(t._babylonTransformNode),this.logClose(),Promise.all(a).then(()=>t._babylonTransformNode)}_loadMeshPrimitiveAsync(e,t,s,n,r,a){const o=this._extensionsLoadMeshPrimitiveAsync(e,t,s,n,r,a);if(o)return o;this.logOpen(`${e}`);const i=0===this._disableInstancedMesh&&this._parent.createInstances&&null==s.skin&&!n.primitives[0].targets;let l,h;if(i&&r._instanceData)this._babylonScene._blockEntityCollection=!!this._assetContainer,l=r._instanceData.babylonSourceMesh.createInstance(t),l._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,h=r._instanceData.promise;else{const a=new Array;this._babylonScene._blockEntityCollection=!!this._assetContainer;const o=new m(t,this._babylonScene);if(o._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,o.sideOrientation=this._babylonScene.useRightHandedSystem?_.CounterClockWiseSideOrientation:_.ClockWiseSideOrientation,this._createMorphTargets(e,s,n,r,o),a.push(this._loadVertexDataAsync(e,r,o).then(async t=>await this._loadMorphTargetsAsync(e,r,o,t).then(()=>{this._disposed||(this._babylonScene._blockEntityCollection=!!this._assetContainer,t.applyToMesh(o),t._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1)}))),!this.parent.skipMaterials){const t=he._GetDrawMode(e,r.mode);if(null==r.material){let e=this._defaultBabylonMaterialData[t];e||(e=this._createDefaultMaterial("__GLTFLoader._default",t,this._getDefaultImpl()),this._parent.onMaterialLoadedObservable.notifyObservers(e),this._defaultBabylonMaterialData[t]=e),o.material=e}else{const s=ie.Get(`${e}/material`,this._gltf.materials,r.material);a.push(this._loadMaterialAsync(`/materials/${s.index}`,s,o,t,e=>{o.material=e}))}}h=Promise.all(a),i&&(r._instanceData={babylonSourceMesh:o,promise:h}),l=o}return he.AddPointerMetadata(l,e),this._parent.onMeshLoadedObservable.notifyObservers(l),a(l),this.logClose(),h.then(()=>l)}_loadVertexDataAsync(e,t,s){const n=this._extensionsLoadVertexDataAsync(e,t,s);if(n)return n;const r=t.attributes;if(!r)throw new Error(`${e}: Attributes are missing`);const a=new Array,o=new g(s.name,this._babylonScene);if(null==t.indices)s.isUnIndexed=!0;else{const s=ie.Get(`${e}/indices`,this._gltf.accessors,t.indices);a.push(this._loadIndicesAccessorAsync(`/accessors/${s.index}`,s).then(e=>{o.setIndices(e)}))}const i=(t,n,i)=>{if(null==r[t])return;s._delayInfo=s._delayInfo||[],-1===s._delayInfo.indexOf(n)&&s._delayInfo.push(n);const l=ie.Get(`${e}/attributes/${t}`,this._gltf.accessors,r[t]);a.push(this._loadVertexAccessorAsync(`/accessors/${l.index}`,l,n).then(e=>{if(e.getKind()===T.PositionKind&&!this.parent.alwaysComputeBoundingBox&&!s.skeleton){const e=le(l);e&&(o._boundingInfo=e,o.useBoundingInfoFromGeometry=!0)}o.setVerticesBuffer(e,l.count)})),n==T.MatricesIndicesExtraKind&&(s.numBoneInfluencers=8),i&&i(l)};return i("POSITION",T.PositionKind),i("NORMAL",T.NormalKind),i("TANGENT",T.TangentKind),i("TEXCOORD_0",T.UVKind),i("TEXCOORD_1",T.UV2Kind),i("TEXCOORD_2",T.UV3Kind),i("TEXCOORD_3",T.UV4Kind),i("TEXCOORD_4",T.UV5Kind),i("TEXCOORD_5",T.UV6Kind),i("JOINTS_0",T.MatricesIndicesKind),i("WEIGHTS_0",T.MatricesWeightsKind),i("JOINTS_1",T.MatricesIndicesExtraKind),i("WEIGHTS_1",T.MatricesWeightsExtraKind),i("COLOR_0",T.ColorKind,e=>{"VEC4"===e.type&&(s.hasVertexAlpha=!0)}),Promise.all(a).then(()=>o)}_createMorphTargets(e,t,s,n,r){if(!n.targets||!this._parent.loadMorphTargets)return;if(null==t._numMorphTargets)t._numMorphTargets=n.targets.length;else if(n.targets.length!==t._numMorphTargets)throw new Error(`${e}: Primitives do not have the same number of targets`);const a=s.extras?s.extras.targetNames:null;this._babylonScene._blockEntityCollection=!!this._assetContainer,r.morphTargetManager=new V(this._babylonScene),r.morphTargetManager._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,r.morphTargetManager.areUpdatesFrozen=!0;for(let e=0;e<n.targets.length;e++){const n=t.weights?t.weights[e]:s.weights?s.weights[e]:0,o=a?a[e]:`morphTarget${e}`;r.morphTargetManager.addTarget(new F(o,n,r.getScene()))}}_loadMorphTargetsAsync(e,t,s,n){if(!t.targets||!this._parent.loadMorphTargets)return Promise.resolve();const r=new Array,a=s.morphTargetManager;for(let s=0;s<a.numTargets;s++){const o=a.getTarget(s);r.push(this._loadMorphTargetVertexDataAsync(`${e}/targets/${s}`,n,t.targets[s],o))}return Promise.all(r).then(()=>{a.areUpdatesFrozen=!1,this._parent.useMaxMorphTargetInfluencers&&(a.isUsingTextureForTargets||a.numTargets<=V.MaxActiveMorphTargetsInVertexAttributeMode)&&(a.optimizeInfluencers=!1,a.numMaxInfluencers=a.numTargets)})}async _loadMorphTargetVertexDataAsync(e,t,s,n){const r=new Array,a=(n,a,o)=>{if(null==s[n])return;const i=t.getVertexBuffer(a);if(!i)return;const l=ie.Get(`${e}/${n}`,this._gltf.accessors,s[n]);r.push(this._loadFloatAccessorAsync(`/accessors/${l.index}`,l).then(e=>{o(i,e)}))};return a("POSITION",T.PositionKind,(e,t)=>{const s=new Float32Array(t.length);e.forEach(t.length,(e,n)=>{s[n]=t[n]+e}),n.setPositions(s)}),a("NORMAL",T.NormalKind,(e,t)=>{const s=new Float32Array(t.length);e.forEach(s.length,(e,n)=>{s[n]=t[n]+e}),n.setNormals(s)}),a("TANGENT",T.TangentKind,(e,t)=>{const s=new Float32Array(t.length/3*4);let r=0;e.forEach(t.length/3*4,(e,n)=>{(n+1)%4!=0&&(s[r]=t[r]+e,r++)}),n.setTangents(s)}),a("TEXCOORD_0",T.UVKind,(e,t)=>{const s=new Float32Array(t.length);e.forEach(t.length,(e,n)=>{s[n]=t[n]+e}),n.setUVs(s)}),a("TEXCOORD_1",T.UV2Kind,(e,t)=>{const s=new Float32Array(t.length);e.forEach(t.length,(e,n)=>{s[n]=t[n]+e}),n.setUV2s(s)}),a("COLOR_0",T.ColorKind,(t,s)=>{let r=null;const a=t.getSize();if(3===a){r=new Float32Array(s.length/3*4),t.forEach(s.length,(e,t)=>{const n=Math.floor(t/3),a=t%3;r[4*n+a]=s[3*n+a]+e});for(let e=0;e<s.length/3;++e)r[4*e+3]=1}else{if(4!==a)throw new Error(`${e}: Invalid number of components (${a}) for COLOR_0 attribute`);r=new Float32Array(s.length),t.forEach(s.length,(e,t)=>{r[t]=s[t]+e})}n.setColors(r)}),await Promise.all(r).then(()=>{})}static _LoadTransform(e,t){if(null!=e.skin)return;let s=A.Zero(),n=x.Identity(),r=A.One();if(e.matrix){v.FromArray(e.matrix).decompose(r,n,s)}else e.translation&&(s=A.FromArray(e.translation)),e.rotation&&(n=x.FromArray(e.rotation)),e.scale&&(r=A.FromArray(e.scale));t.position=s,t.rotationQuaternion=n,t.scaling=r}_loadSkinAsync(e,t,s,n){if(!this._parent.loadSkins)return Promise.resolve();const r=this._extensionsLoadSkinAsync(e,t,s);if(r)return r;if(s._data)return n(s._data.babylonSkeleton),s._data.promise;const a=`skeleton${s.index}`;this._babylonScene._blockEntityCollection=!!this._assetContainer;const o=new U(s.name||a,a,this._babylonScene);o._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,this._loadBones(e,s,o);const i=this._loadSkinInverseBindMatricesDataAsync(e,s).then(e=>{this._updateBoneMatrices(o,e)});return s._data={babylonSkeleton:o,promise:i},n(o),i}_loadBones(e,t,s){if(null==t.skeleton||this._parent.alwaysComputeSkeletonRootNode){const s=this._findSkeletonRootNode(`${e}/joints`,t.joints);if(s)if(void 0===t.skeleton)t.skeleton=s.index;else{const n=(e,t)=>{for(;t.parent;t=t.parent)if(t.parent===e)return!0;return!1},a=ie.Get(`${e}/skeleton`,this._gltf.nodes,t.skeleton);a===s||n(a,s)||(r.Warn(`${e}/skeleton: Overriding with nearest common ancestor as skeleton node is not a common root`),t.skeleton=s.index)}else r.Warn(`${e}: Failed to find common root`)}const n={};for(const r of t.joints){const a=ie.Get(`${e}/joints/${r}`,this._gltf.nodes,r);this._loadBone(a,t,s,n)}}_findSkeletonRootNode(e,t){if(0===t.length)return null;const s={};for(const n of t){const t=[];let r=ie.Get(`${e}/${n}`,this._gltf.nodes,n);for(;-1!==r.index;)t.unshift(r),r=r.parent;s[n]=t}let n=null;for(let e=0;;++e){let r=s[t[0]];if(e>=r.length)return n;const a=r[e];for(let o=1;o<t.length;++o)if(r=s[t[o]],e>=r.length||a!==r[e])return n;n=a}}_loadBone(e,t,s,n){e._isJoint=!0;let a=n[e.index];if(a)return a;let o=null;e.index!==t.skeleton&&(e.parent&&-1!==e.parent.index?o=this._loadBone(e.parent,t,s,n):void 0!==t.skeleton&&r.Warn(`/skins/${t.index}/skeleton: Skeleton node is not a common root`));const i=t.joints.indexOf(e.index);return a=new D(e.name||`joint${e.index}`,s,o,this._getNodeMatrix(e),null,null,i),n[e.index]=a,this._postSceneLoadActions.push(()=>{a.linkTransformNode(e._babylonTransformNode)}),a}_loadSkinInverseBindMatricesDataAsync(e,t){if(null==t.inverseBindMatrices)return Promise.resolve(null);const s=ie.Get(`${e}/inverseBindMatrices`,this._gltf.accessors,t.inverseBindMatrices);return this._loadFloatAccessorAsync(`/accessors/${s.index}`,s)}_updateBoneMatrices(e,t){for(const s of e.bones){const e=v.Identity(),n=s._index;t&&-1!==n&&(v.FromArrayToRef(t,16*n,e),e.invertToRef(e));const r=s.getParent();r&&e.multiplyToRef(r.getAbsoluteInverseBindMatrix(),e),s.updateMatrix(e,!1,!1),s._updateAbsoluteBindMatrices(void 0,!1)}}_getNodeMatrix(e){return e.matrix?v.FromArray(e.matrix):v.Compose(e.scale?A.FromArray(e.scale):A.One(),e.rotation?x.FromArray(e.rotation):x.Identity(),e.translation?A.FromArray(e.translation):A.Zero())}loadCameraAsync(e,t,s=()=>{}){const n=this._extensionsLoadCameraAsync(e,t,s);if(n)return n;const r=new Array;this.logOpen(`${e} ${t.name||""}`),this._babylonScene._blockEntityCollection=!!this._assetContainer;const a=new G(t.name||`camera${t.index}`,A.Zero(),this._babylonScene,!1);switch(a._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,t._babylonCamera=a,a.setTarget(new A(0,0,-1)),t.type){case"perspective":{const s=t.perspective;if(!s)throw new Error(`${e}: Camera perspective properties are missing`);a.fov=s.yfov,a.minZ=s.znear,a.maxZ=s.zfar||0;break}case"orthographic":if(!t.orthographic)throw new Error(`${e}: Camera orthographic properties are missing`);a.mode=M.ORTHOGRAPHIC_CAMERA,a.orthoLeft=-t.orthographic.xmag,a.orthoRight=t.orthographic.xmag,a.orthoBottom=-t.orthographic.ymag,a.orthoTop=t.orthographic.ymag,a.minZ=t.orthographic.znear,a.maxZ=t.orthographic.zfar;break;default:throw new Error(`${e}: Invalid camera type (${t.type})`)}return he.AddPointerMetadata(a,e),this._parent.onCameraLoadedObservable.notifyObservers(a),s(a),this.logClose(),Promise.all(r).then(()=>a)}_loadAnimationsAsync(){this._parent._startPerformanceCounter("Load animations");const e=this._gltf.animations;if(!e)return Promise.resolve();const t=new Array;for(let s=0;s<e.length;s++){const n=e[s];t.push(this.loadAnimationAsync(`/animations/${n.index}`,n).then(e=>{0===e.targetedAnimations.length&&e.dispose()}))}return Promise.all(t).then(()=>{this._parent._endPerformanceCounter("Load animations")})}loadAnimationAsync(e,t){this._parent._startPerformanceCounter("Load animation");const s=this._extensionsLoadAnimationAsync(e,t);return s||ae.value.then(({AnimationGroup:s})=>{this._babylonScene._blockEntityCollection=!!this._assetContainer;const n=new s(t.name||`animation${t.index}`,this._babylonScene);n._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,t._babylonAnimationGroup=n;const r=new Array;ie.Assign(t.channels),ie.Assign(t.samplers);for(const s of t.channels)r.push(this._loadAnimationChannelAsync(`${e}/channels/${s.index}`,e,t,s,(e,t)=>{e.animations=e.animations||[],e.animations.push(t),n.addTargetedAnimation(t,e)}));return this._parent._endPerformanceCounter("Load animation"),Promise.all(r).then(()=>(n.normalize(0),n))})}_loadAnimationChannelAsync(e,t,s,n,r){const a=this._extensionsLoadAnimationChannelAsync(e,t,s,n,r);if(a)return a;if(null==n.target.node)return Promise.resolve();const o=ie.Get(`${e}/target/node`,this._gltf.nodes,n.target.node),i=n.target.path,l="weights"===i;return l&&!o._numMorphTargets||!l&&!o._babylonTransformNode?Promise.resolve():this._parent.loadNodeAnimations||l||o._isJoint?oe.value.then(()=>{let a;switch(i){case"translation":a=W("/nodes/{}/translation")?.interpolation;break;case"rotation":a=W("/nodes/{}/rotation")?.interpolation;break;case"scale":a=W("/nodes/{}/scale")?.interpolation;break;case"weights":a=W("/nodes/{}/weights")?.interpolation;break;default:throw new Error(`${e}/target/path: Invalid value (${n.target.path})`)}if(!a)throw new Error(`${e}/target/path: Could not find interpolation properties for target path (${n.target.path})`);const l={object:o,info:a};return this._loadAnimationChannelFromTargetInfoAsync(e,t,s,n,l,r)}):Promise.resolve()}_loadAnimationChannelFromTargetInfoAsync(e,t,s,n,r,a){const o=this.parent.targetFps,i=1/o,l=ie.Get(`${e}/sampler`,s.samplers,n.sampler);return this._loadAnimationSamplerAsync(`${t}/samplers/${n.sampler}`,l).then(e=>{let t=0;const l=r.object,h=r.info;for(const r of h){const h=r.getStride(l),d=e.input,c=e.output,u=new Array(d.length);let _=0;switch(e.interpolation){case"STEP":for(let e=0;e<d.length;e++){const t=r.getValue(l,c,_,1);_+=h,u[e]={frame:d[e]*o,value:t,interpolation:1}}break;case"CUBICSPLINE":for(let e=0;e<d.length;e++){const t=r.getValue(l,c,_,i);_+=h;const s=r.getValue(l,c,_,1);_+=h;const n=r.getValue(l,c,_,i);_+=h,u[e]={frame:d[e]*o,inTangent:t,value:s,outTangent:n}}break;case"LINEAR":for(let e=0;e<d.length;e++){const t=r.getValue(l,c,_,1);_+=h,u[e]={frame:d[e]*o,value:t}}}if(_>0){const e=`${s.name||`animation${s.index}`}_channel${n.index}_${t}`,i=r.buildAnimations(l,e,o,u);for(const e of i)t++,a(e.babylonAnimatable,e.babylonAnimation)}}})}_loadAnimationSamplerAsync(e,t){if(t._data)return t._data;const s=t.interpolation||"LINEAR";switch(s){case"STEP":case"LINEAR":case"CUBICSPLINE":break;default:throw new Error(`${e}/interpolation: Invalid value (${t.interpolation})`)}const n=ie.Get(`${e}/input`,this._gltf.accessors,t.input),r=ie.Get(`${e}/output`,this._gltf.accessors,t.output);return t._data=Promise.all([this._loadFloatAccessorAsync(`/accessors/${n.index}`,n),this._loadFloatAccessorAsync(`/accessors/${r.index}`,r)]).then(([e,t])=>({input:e,interpolation:s,output:t})),t._data}loadBufferAsync(e,t,s,n){const r=this._extensionsLoadBufferAsync(e,t,s,n);if(r)return r;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(t=>{try{return new Uint8Array(t.buffer,t.byteOffset+s,n)}catch(t){throw new Error(`${e}: ${t.message}`,{cause:t})}})}loadBufferViewAsync(e,t){const s=this._extensionsLoadBufferViewAsync(e,t);if(s)return s;if(t._data)return t._data;const n=ie.Get(`${e}/buffer`,this._gltf.buffers,t.buffer);return t._data=this.loadBufferAsync(`/buffers/${n.index}`,n,t.byteOffset||0,t.byteLength),t._data}_loadAccessorAsync(e,t,s){if(t._data)return t._data;const n=he._GetNumComponents(e,t.type),r=n*C(t.componentType),a=n*t.count;if(null==t.bufferView)t._data=Promise.resolve(new s(a));else{const o=ie.Get(`${e}/bufferView`,this._gltf.bufferViews,t.bufferView);t._data=this.loadBufferViewAsync(`/bufferViews/${o.index}`,o).then(i=>{if(5126!==t.componentType||t.normalized||o.byteStride&&o.byteStride!==r){const e=new s(a);return E(i,t.byteOffset||0,o.byteStride||r,n,t.componentType,e.length,t.normalized||!1,(t,s)=>{e[s]=t}),e}return he._GetTypedArray(e,t.componentType,i,t.byteOffset,a)})}if(t.sparse){const a=t.sparse;t._data=t._data.then(o=>{const i=o,l=ie.Get(`${e}/sparse/indices/bufferView`,this._gltf.bufferViews,a.indices.bufferView),h=ie.Get(`${e}/sparse/values/bufferView`,this._gltf.bufferViews,a.values.bufferView);return Promise.all([this.loadBufferViewAsync(`/bufferViews/${l.index}`,l),this.loadBufferViewAsync(`/bufferViews/${h.index}`,h)]).then(([o,l])=>{const h=he._GetTypedArray(`${e}/sparse/indices`,a.indices.componentType,o,a.indices.byteOffset,a.count),d=n*a.count;let c;if(5126!==t.componentType||t.normalized){const o=he._GetTypedArray(`${e}/sparse/values`,t.componentType,l,a.values.byteOffset,d);c=new s(d),E(o,0,r,n,t.componentType,c.length,t.normalized||!1,(e,t)=>{c[t]=e})}else c=he._GetTypedArray(`${e}/sparse/values`,t.componentType,l,a.values.byteOffset,d);let u=0;for(let e=0;e<h.length;e++){let t=h[e]*n;for(let e=0;e<n;e++)i[t++]=c[u++]}return i})})}return t._data}_loadFloatAccessorAsync(e,t){return this._loadAccessorAsync(e,t,Float32Array)}_loadIndicesAccessorAsync(e,t){if("SCALAR"!==t.type)throw new Error(`${e}/type: Invalid value ${t.type}`);if(5121!==t.componentType&&5123!==t.componentType&&5125!==t.componentType)throw new Error(`${e}/componentType: Invalid value ${t.componentType}`);if(t._data)return t._data;if(t.sparse){const s=he._GetTypedArrayConstructor(`${e}/componentType`,t.componentType);t._data=this._loadAccessorAsync(e,t,s)}else{const s=ie.Get(`${e}/bufferView`,this._gltf.bufferViews,t.bufferView);t._data=this.loadBufferViewAsync(`/bufferViews/${s.index}`,s).then(s=>he._GetTypedArray(e,t.componentType,s,t.byteOffset,t.count))}return t._data}_loadVertexBufferViewAsync(e){if(e._babylonBuffer)return e._babylonBuffer;const t=this._babylonScene.getEngine();return e._babylonBuffer=this.loadBufferViewAsync(`/bufferViews/${e.index}`,e).then(e=>new O(t,e,!1)),e._babylonBuffer}_loadVertexAccessorAsync(e,t,s){if(t._babylonVertexBuffer?.[s])return t._babylonVertexBuffer[s];t._babylonVertexBuffer||(t._babylonVertexBuffer={});const n=this._babylonScene.getEngine();if(t.sparse||null==t.bufferView)t._babylonVertexBuffer[s]=this._loadFloatAccessorAsync(e,t).then(e=>new T(n,e,s,!1));else{const r=ie.Get(`${e}/bufferView`,this._gltf.bufferViews,t.bufferView);t._babylonVertexBuffer[s]=this._loadVertexBufferViewAsync(r).then(a=>{const o=he._GetNumComponents(e,t.type);return new T(n,a,s,!1,void 0,r.byteStride,void 0,t.byteOffset,o,t.componentType,t.normalized,!0,void 0,!0)})}return t._babylonVertexBuffer[s]}_loadMaterialMetallicRoughnessPropertiesAsync(e,t,s){const n=new Array,r=this._getOrCreateMaterialAdapter(s);return t&&(t.baseColorFactor?(r.baseColor=L.FromArray(t.baseColorFactor),r.geometryOpacity=t.baseColorFactor[3]):r.baseColor=L.White(),r.baseMetalness=null==t.metallicFactor?1:t.metallicFactor,r.specularRoughness=null==t.roughnessFactor?1:t.roughnessFactor,t.baseColorTexture&&n.push(this.loadTextureInfoAsync(`${e}/baseColorTexture`,t.baseColorTexture,e=>{e.name=`${s.name} (Base Color)`,r.baseColorTexture=e})),t.metallicRoughnessTexture&&(t.metallicRoughnessTexture.nonColorData=!0,n.push(this.loadTextureInfoAsync(`${e}/metallicRoughnessTexture`,t.metallicRoughnessTexture,e=>{e.name=`${s.name} (Metallic Roughness)`,r.baseMetalnessTexture=e,r.specularRoughnessTexture=e})),r.useRoughnessFromMetallicTextureGreen=!0,r.useMetallicFromMetallicTextureBlue=!0)),Promise.all(n).then(()=>{})}_loadMaterialAsync(e,t,s,n,r=()=>{}){const a=this._extensionsLoadMaterialAsync(e,t,s,n,r);if(a)return a;t._data=t._data||{};let o=t._data[n];if(!o){this.logOpen(`${e} ${t.name||""}`);const s=this.createMaterial(e,t,n);o={babylonMaterial:s,babylonMeshes:[],promise:this.loadMaterialPropertiesAsync(e,t,s)},t._data[n]=o,he.AddPointerMetadata(s,e),this._parent.onMaterialLoadedObservable.notifyObservers(s),this.logClose()}return s&&(o.babylonMeshes.push(s),s.onDisposeObservable.addOnce(()=>{const e=o.babylonMeshes.indexOf(s);-1!==e&&o.babylonMeshes.splice(e,1)})),r(o.babylonMaterial),o.promise.then(()=>o.babylonMaterial)}_selectImplForGltfMaterial(e){if(this.parent.useOpenPBR||e.extensions?.KHR_materials_openpbr){const e=this._pbrMaterialImpls.get("openpbr");if(e)return e}const t=this._pbrMaterialImpls.get("pbr");if(t)return t;throw new Error("No PBR material implementation loaded")}_getDefaultImpl(){if(this.parent.useOpenPBR){const e=this._pbrMaterialImpls.get("openpbr");if(e)return e}const e=this._pbrMaterialImpls.get("pbr")??this._pbrMaterialImpls.values().next().value;if(e)return e;throw new Error("No PBR material implementation loaded")}_createDefaultMaterial(e,t,s){this._babylonScene._blockEntityCollection=!!this._assetContainer;const n=new s.materialClass(e,this._babylonScene);n._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,n.fillMode=t,n.transparencyMode=s.materialClass.MATERIAL_OPAQUE;const r=this._getOrCreateMaterialAdapter(n);return r.transparencyAsAlphaCoverage=this._parent.transparencyAsCoverage,r.baseMetalness=1,r.specularRoughness=1,n}createMaterial(e,t,s){const n=this._extensionsCreateMaterial(e,t,s);if(n)return n;const r=t.name||`material${t.index}`;return this._createDefaultMaterial(r,s,this._selectImplForGltfMaterial(t))}loadMaterialPropertiesAsync(e,t,s){const n=this._extensionsLoadMaterialPropertiesAsync(e,t,s);if(n)return n;const r=new Array;return r.push(this.loadMaterialBasePropertiesAsync(e,t,s)),t.pbrMetallicRoughness&&r.push(this._loadMaterialMetallicRoughnessPropertiesAsync(`${e}/pbrMetallicRoughness`,t.pbrMetallicRoughness,s)),this.loadMaterialAlphaProperties(e,t,s),Promise.all(r).then(()=>{})}loadMaterialBasePropertiesAsync(e,t,s){const n=new Array,r=this._getOrCreateMaterialAdapter(s);let a;r.emissionColor=t.emissiveFactor?L.FromArray(t.emissiveFactor):new L(0,0,0),t.doubleSided&&(r.backFaceCulling=!1,r.twoSidedLighting=!0),t.normalTexture&&(t.normalTexture.nonColorData=!0,n.push(this.loadTextureInfoAsync(`${e}/normalTexture`,t.normalTexture,e=>{e.name=`${s.name} (Normal)`,r.geometryNormalTexture=e,null!=t.normalTexture?.scale&&(e.level=t.normalTexture.scale)})),r.setNormalMapInversions(!this._babylonScene.useRightHandedSystem,this._babylonScene.useRightHandedSystem));let o,i=1;return t.occlusionTexture&&(t.occlusionTexture.nonColorData=!0,n.push(this.loadTextureInfoAsync(`${e}/occlusionTexture`,t.occlusionTexture,e=>{e.name=`${s.name} (Occlusion)`,a=e})),null!=t.occlusionTexture.strength&&(i=t.occlusionTexture.strength)),t.emissiveTexture&&n.push(this.loadTextureInfoAsync(`${e}/emissiveTexture`,t.emissiveTexture,e=>{e.name=`${s.name} (Emissive)`,o=e})),Promise.all(n).then(()=>{a&&(r.ambientOcclusionTexture=a,r.ambientOcclusionTextureStrength=i),o&&(r.emissionColorTexture=o)})}loadMaterialAlphaProperties(e,t,s){if(0===this._pbrMaterialImpls.size)throw new Error(`${e}: Material type not supported`);const n=this._getOrCreateMaterialAdapter(s),r=n.baseColorTexture;switch(t.alphaMode||"OPAQUE"){case"OPAQUE":s.transparencyMode=_.MATERIAL_OPAQUE,s.alpha=1;break;case"MASK":s.transparencyMode=_.MATERIAL_ALPHATEST,n.alphaCutOff=null==t.alphaCutoff?.5:t.alphaCutoff,r&&(r.hasAlpha=!0,n.useAlphaFromBaseColorTexture=!0);break;case"BLEND":s.transparencyMode=_.MATERIAL_ALPHABLEND,r&&(r.hasAlpha=!0,n.useAlphaFromBaseColorTexture=!0);break;default:throw new Error(`${e}/alphaMode: Invalid value (${t.alphaMode})`)}}loadTextureInfoAsync(e,t,s=()=>{}){const n=this._extensionsLoadTextureInfoAsync(e,t,s);if(n)return n;if(this.logOpen(`${e}`),t.texCoord>=6)throw new Error(`${e}/texCoord: Invalid value (${t.texCoord})`);const r=ie.Get(`${e}/index`,this._gltf.textures,t.index);r._textureInfo=t;const a=this._loadTextureAsync(`/textures/${t.index}`,r,n=>{n.coordinatesIndex=t.texCoord||0,he.AddPointerMetadata(n,e),this._parent.onTextureLoadedObservable.notifyObservers(n),s(n)});return this.logClose(),a}_loadTextureAsync(e,t,s=()=>{}){const n=this._extensionsLoadTextureAsync(e,t,s);if(n)return n;this.logOpen(`${e} ${t.name||""}`);const r=null==t.sampler?he.DefaultSampler:ie.Get(`${e}/sampler`,this._gltf.samplers,t.sampler),a=ie.Get(`${e}/source`,this._gltf.images,t.source),o=this._createTextureAsync(e,r,a,s,void 0,!t._textureInfo.nonColorData);return this.logClose(),o}_createTextureAsync(e,t,s,n=()=>{},r,a){const o=this._loadSampler(`/samplers/${t.index}`,t),i=new Array,l=new S;this._babylonScene._blockEntityCollection=!!this._assetContainer;const h={noMipmap:o.noMipMaps,invertY:!1,samplingMode:o.samplingMode,onLoad:()=>{this._disposed||l.resolve()},onError:(t,s)=>{this._disposed||l.reject(new Error(`${e}: ${s&&s.message?s.message:t||"Failed to load texture"}`))},mimeType:s.mimeType??$(s.uri??""),loaderOptions:r,useSRGBBuffer:!!a&&this._parent.useSRGBBuffers},d=new P(null,this._babylonScene,h);d._parentContainer=this._assetContainer,this._babylonScene._blockEntityCollection=!1,i.push(l.promise);const c=s.uri&&!R(s.uri)?s.uri:void 0,u=c??`${this._fileName}#image${s.index}`;if(i.push(this.loadImageAsync(`/images/${s.index}`,s).then(e=>{const t=`data:${this._uniqueRootUrl}${u}`;d.updateURL(t,e);const n=d.getInternalTexture();n&&(n.label=s.name)})),d.wrapU=o.wrapU,d.wrapV=o.wrapV,n(d),this._parent.useGltfTextureNames){const e=s.name||c||`image${s.index}`;d.name=e}return Promise.all(i).then(()=>d)}_loadSampler(e,t){return t._data||(t._data={noMipMaps:9728===t.minFilter||9729===t.minFilter,samplingMode:he._GetTextureSamplingMode(e,t),wrapU:he._GetTextureWrapMode(`${e}/wrapS`,t.wrapS),wrapV:he._GetTextureWrapMode(`${e}/wrapT`,t.wrapT)}),t._data}loadImageAsync(e,t){if(!t._data){if(this.logOpen(`${e} ${t.name||""}`),t.uri)t._data=this.loadUriAsync(`${e}/uri`,t,t.uri);else{const s=ie.Get(`${e}/bufferView`,this._gltf.bufferViews,t.bufferView);t._data=this.loadBufferViewAsync(`/bufferViews/${s.index}`,s)}this.logClose()}return t._data}loadUriAsync(e,t,s){const n=this._extensionsLoadUriAsync(e,t,s);if(n)return n;if(!he._ValidateUri(s))throw new Error(`${e}: '${s}' is invalid`);if(R(s)){const t=new Uint8Array(o(s));return this.log(`${e}: Decoded ${s.substring(0,64)}... (${t.length} bytes)`),Promise.resolve(t)}return this.log(`${e}: Loading ${s}`),this._parent.preprocessUrlAsync(this._rootUrl+s).then(t=>new Promise((n,r)=>{this._parent._loadFile(this._babylonScene,t,t=>{this._disposed||(this.log(`${e}: Loaded ${s} (${t.byteLength} bytes)`),n(new Uint8Array(t)))},!0,t=>{r(new k(`${e}: Failed to load '${s}'${t?": "+t.status+" "+t.statusText:""}`,t))})}))}static AddPointerMetadata(e,t){e.metadata=e.metadata||{};const s=e._internalMetadata=e._internalMetadata||{},n=s.gltf=s.gltf||{};(n.pointers=n.pointers||[]).push(t)}static _GetTextureWrapMode(e,t){switch(t=null==t?10497:t){case 33071:return P.CLAMP_ADDRESSMODE;case 33648:return P.MIRROR_ADDRESSMODE;case 10497:return P.WRAP_ADDRESSMODE;default:return r.Warn(`${e}: Invalid value (${t})`),P.WRAP_ADDRESSMODE}}static _GetTextureSamplingMode(e,t){const s=null==t.magFilter?9729:t.magFilter,n=null==t.minFilter?9987:t.minFilter;if(9729===s)switch(n){case 9728:return P.LINEAR_NEAREST;case 9729:return P.LINEAR_LINEAR;case 9984:return P.LINEAR_NEAREST_MIPNEAREST;case 9985:return P.LINEAR_LINEAR_MIPNEAREST;case 9986:return P.LINEAR_NEAREST_MIPLINEAR;case 9987:return P.LINEAR_LINEAR_MIPLINEAR;default:return r.Warn(`${e}/minFilter: Invalid value (${n})`),P.LINEAR_LINEAR_MIPLINEAR}else switch(9728!==s&&r.Warn(`${e}/magFilter: Invalid value (${s})`),n){case 9728:return P.NEAREST_NEAREST;case 9729:return P.NEAREST_LINEAR;case 9984:return P.NEAREST_NEAREST_MIPNEAREST;case 9985:return P.NEAREST_LINEAR_MIPNEAREST;case 9986:return P.NEAREST_NEAREST_MIPLINEAR;case 9987:return P.NEAREST_LINEAR_MIPLINEAR;default:return r.Warn(`${e}/minFilter: Invalid value (${n})`),P.NEAREST_NEAREST_MIPNEAREST}}static _GetTypedArrayConstructor(e,t){try{return I(t)}catch(t){throw new Error(`${e}: ${t.message}`,{cause:t})}}static _GetTypedArray(e,t,s,n,a){const o=s.buffer;n=s.byteOffset+(n||0);const i=he._GetTypedArrayConstructor(`${e}/componentType`,t),l=C(t);return n%l!==0?(r.Warn(`${e}: Copying buffer as byte offset (${n}) is not a multiple of component type byte length (${l})`),new i(o.slice(n,n+a*l),0)):new i(o,n,a)}static _GetNumComponents(e,t){switch(t){case"SCALAR":return 1;case"VEC2":return 2;case"VEC3":return 3;case"VEC4":case"MAT2":return 4;case"MAT3":return 9;case"MAT4":return 16}throw new Error(`${e}: Invalid type (${t})`)}static _ValidateUri(e){return t.IsBase64(e)||-1===e.indexOf("..")}static _GetDrawMode(e,t){switch(null==t&&(t=4),t){case 0:return _.PointListDrawMode;case 1:return _.LineListDrawMode;case 2:return _.LineLoopDrawMode;case 3:return _.LineStripDrawMode;case 4:return _.TriangleFillMode;case 5:return _.TriangleStripDrawMode;case 6:return _.TriangleFanDrawMode}throw new Error(`${e}: Invalid mesh primitive mode (${t})`)}_compileMaterialsAsync(){this._parent._startPerformanceCounter("Compile materials");const e=new Array;if(this._gltf.materials)for(const t of this._gltf.materials)if(t._data)for(const s in t._data){const n=t._data[s];for(const t of n.babylonMeshes){t.computeWorldMatrix(!0);const s=n.babylonMaterial;e.push(s.forceCompilationAsync(t)),e.push(s.forceCompilationAsync(t,{useInstances:!0})),this._parent.useClipPlane&&(e.push(s.forceCompilationAsync(t,{clipPlane:!0})),e.push(s.forceCompilationAsync(t,{clipPlane:!0,useInstances:!0})))}}return Promise.all(e).then(()=>{this._parent._endPerformanceCounter("Compile materials")})}_compileShadowGeneratorsAsync(){this._parent._startPerformanceCounter("Compile shadow generators");const e=new Array,t=this._babylonScene.lights;for(const s of t){const t=s.getShadowGenerator();t&&e.push(t.forceCompilationAsync())}return Promise.all(e).then(()=>{this._parent._endPerformanceCounter("Compile shadow generators")})}_forEachExtensions(e){for(const t of this._extensions)t.enabled&&e(t)}_applyExtensions(e,t,s){for(const n of this._extensions)if(n.enabled){const r=`${n.name}.${t}`,a=e;a._activeLoaderExtensionFunctions=a._activeLoaderExtensionFunctions||{};const o=a._activeLoaderExtensionFunctions;if(!o[r]){o[r]=!0;try{const e=s(n);if(e)return e}finally{delete o[r]}}}return null}_extensionsOnLoading(){this._forEachExtensions(e=>e.onLoading&&e.onLoading())}_extensionsOnReady(){this._forEachExtensions(e=>e.onReady&&e.onReady())}_extensionsLoadSceneAsync(e,t){return this._applyExtensions(t,"loadScene",s=>s.loadSceneAsync&&s.loadSceneAsync(e,t))}_extensionsLoadNodeAsync(e,t,s){return this._applyExtensions(t,"loadNode",n=>n.loadNodeAsync&&n.loadNodeAsync(e,t,s))}_extensionsLoadCameraAsync(e,t,s){return this._applyExtensions(t,"loadCamera",n=>n.loadCameraAsync&&n.loadCameraAsync(e,t,s))}_extensionsLoadVertexDataAsync(e,t,s){return this._applyExtensions(t,"loadVertexData",n=>n._loadVertexDataAsync&&n._loadVertexDataAsync(e,t,s))}_extensionsLoadMeshPrimitiveAsync(e,t,s,n,r,a){return this._applyExtensions(r,"loadMeshPrimitive",o=>o._loadMeshPrimitiveAsync&&o._loadMeshPrimitiveAsync(e,t,s,n,r,a))}_extensionsLoadMaterialAsync(e,t,s,n,r){return this._applyExtensions(t,"loadMaterial",a=>a._loadMaterialAsync&&a._loadMaterialAsync(e,t,s,n,r))}_extensionsCreateMaterial(e,t,s){return this._applyExtensions(t,"createMaterial",n=>n.createMaterial&&n.createMaterial(e,t,s))}_extensionsLoadMaterialPropertiesAsync(e,t,s){return this._applyExtensions(t,"loadMaterialProperties",n=>n.loadMaterialPropertiesAsync&&n.loadMaterialPropertiesAsync(e,t,s))}_extensionsLoadTextureInfoAsync(e,t,s){return this._applyExtensions(t,"loadTextureInfo",n=>n.loadTextureInfoAsync&&n.loadTextureInfoAsync(e,t,s))}_extensionsLoadTextureAsync(e,t,s){return this._applyExtensions(t,"loadTexture",n=>n._loadTextureAsync&&n._loadTextureAsync(e,t,s))}_extensionsLoadAnimationAsync(e,t){return this._applyExtensions(t,"loadAnimation",s=>s.loadAnimationAsync&&s.loadAnimationAsync(e,t))}_extensionsLoadAnimationChannelAsync(e,t,s,n,r){return this._applyExtensions(s,"loadAnimationChannel",a=>a._loadAnimationChannelAsync&&a._loadAnimationChannelAsync(e,t,s,n,r))}_extensionsLoadSkinAsync(e,t,s){return this._applyExtensions(s,"loadSkin",n=>n._loadSkinAsync&&n._loadSkinAsync(e,t,s))}_extensionsLoadUriAsync(e,t,s){return this._applyExtensions(t,"loadUri",n=>n._loadUriAsync&&n._loadUriAsync(e,t,s))}_extensionsLoadBufferViewAsync(e,t){return this._applyExtensions(t,"loadBufferView",s=>s.loadBufferViewAsync&&s.loadBufferViewAsync(e,t))}_extensionsLoadBufferAsync(e,t,s,n){return this._applyExtensions(t,"loadBuffer",r=>r.loadBufferAsync&&r.loadBufferAsync(e,t,s,n))}static LoadExtensionAsync(e,t,s,n){if(!t.extensions)return null;const r=t.extensions[s];return r?n(`${e}/extensions/${s}`,r):null}static LoadExtraAsync(e,t,s,n){if(!t.extras)return null;const r=t.extras[s];return r?n(`${e}/extras/${s}`,r):null}isExtensionUsed(e){return!!this._gltf.extensionsUsed&&-1!==this._gltf.extensionsUsed.indexOf(e)}logOpen(e){this._parent._logOpen(e)}logClose(){this._parent._logClose()}log(e){this._parent._log(e)}startPerformanceCounter(e){this._parent._startPerformanceCounter(e)}endPerformanceCounter(e){this._parent._endPerformanceCounter(e)}}he.DefaultSampler={index:-1};let de=!1;function ce(){de||(de=!0,se._CreateGLTF2Loader=e=>new he(e))}export{ie as A,se as G,le as L,ce as R,re as a,he as b};
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