@needle-tools/engine/dist/gltf-progressive-BacJPTD6.umd.cjs

Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.

"use strict";const c=require("./three.umd.cjs"),X=require("./three-examples.umd.cjs");var le=typeof document<"u"?document.currentScript:null;const $e="";globalThis.GLTF_PROGRESSIVE_VERSION=$e;console.debug("[gltf-progressive] version -");let I="https://www.gstatic.com/draco/versioned/decoders/1.5.7/",N="https://cdn.needle.tools/static/three/0.179.1/basis2/";const Be=I,Ge=N,Oe=new URL(I+"draco_decoder.js");Oe.searchParams.append("range","true");fetch(Oe,{method:"GET",headers:{Range:"bytes=0-1"}}).catch(i=>{console.debug(`Failed to fetch remote Draco decoder from ${I} (offline: ${typeof navigator<"u"?navigator.onLine:"unknown"})`),I===Be&&Te("./include/draco/"),N===Ge&&Se("./include/ktx2/")}).finally(()=>{Pe()});const Fe=()=>({dracoDecoderPath:I,ktx2TranscoderPath:N});function Te(i){I=i,A&&A[pe]!=I?(console.debug("Updating Draco decoder path to "+i),A[pe]=I,A.setDecoderPath(I),A.preload()):console.debug("Setting Draco decoder path to "+i)}function Se(i){N=i,$&&$.transcoderPath!=N?(console.debug("Updating KTX2 transcoder path to "+i),$.setTranscoderPath(N),$.init()):console.debug("Setting KTX2 transcoder path to "+i)}function ne(i){return Pe(),i?$.detectSupport(i):i!==null&&console.warn("No renderer provided to detect ktx2 support - loading KTX2 textures might fail"),{dracoLoader:A,ktx2Loader:$,meshoptDecoder:oe}}function xe(i){i.dracoLoader||i.setDRACOLoader(A),i.ktx2Loader||i.setKTX2Loader($),i.meshoptDecoder||i.setMeshoptDecoder(oe)}const pe=Symbol("dracoDecoderPath");let A,oe,$;function Pe(){A||(A=new X.DRACOLoader,A[pe]=I,A.setDecoderPath(I),A.setDecoderConfig({type:"js"}),A.preload()),$||($=new X.KTX2Loader,$.setTranscoderPath(N),$.init()),oe||(oe=X.MeshoptDecoder)}const me=new WeakMap;function we(i,t){let e=me.get(i);e?e=Object.assign(e,t):e=t,me.set(i,e)}const Ue=X.GLTFLoader.prototype.load;function We(...i){const t=me.get(this);let e=i[0];const s=new URL(e,window.location.href);if(s.hostname.endsWith("needle.tools")){const o=t?.progressive!==void 0?t.progressive:!0,n=t?.usecase?t.usecase:"default";o?this.requestHeader.Accept=`*/*;progressive=allowed;usecase=${n}`:this.requestHeader.Accept=`*/*;usecase=${n}`,e=s.toString()}return i[0]=e,Ue?.call(this,...i)}X.GLTFLoader.prototype.load=We;z("debugprogressive");function z(i){if(typeof window>"u")return!1;const e=new URL(window.location.href).searchParams.get(i);return e==null||e==="0"||e==="false"?!1:e===""?!0:e}function ze(i,t){if(t===void 0||i===void 0||t.startsWith("./")||t.startsWith("http")||t.startsWith("data:")||t.startsWith("blob:"))return t;const e=i.lastIndexOf("/");if(e>=0){const s=i.substring(0,e+1);for(;s.endsWith("/")&&t.startsWith("/");)t=t.substring(1);return s+t}return t}function Le(){return Y!==void 0||(Y=/iPhone|iPad|iPod|Android|IEMobile/i.test(navigator.userAgent),z("debugprogressive")&&console.log("[glTF Progressive]: isMobileDevice",Y)),Y}let Y;function Me(){if(typeof window>"u")return!1;const i=new URL(window.location.href),t=i.hostname==="localhost"||/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(i.hostname);return i.hostname==="127.0.0.1"||t}class Ve{constructor(t,e={}){this.maxConcurrent=t,this.debug=e.debug??!1,window.requestAnimationFrame(this.tick)}_running=new Map;_queue=[];debug=!1;tick=()=>{this.internalUpdate(),setTimeout(this.tick,10)};slot(t){return this.debug&&console.debug(`[PromiseQueue]: Requesting slot for key ${t}, running: ${this._running.size}, waiting: ${this._queue.length}`),new Promise(e=>{this._queue.push({key:t,resolve:e})})}add(t,e){this._running.has(t)||(this._running.set(t,e),e.finally(()=>{this._running.delete(t),this.debug&&console.debug(`[PromiseQueue]: Promise finished now running: ${this._running.size}, waiting: ${this._queue.length}. (finished ${t})`)}),this.debug&&console.debug(`[PromiseQueue]: Added new promise, now running: ${this._running.size}, waiting: ${this._queue.length}. (added ${t})`))}internalUpdate(){const t=this.maxConcurrent-this._running.size;for(let e=0;e<t&&this._queue.length>0;e++){this.debug&&console.debug(`[PromiseQueue]: Running ${this._running.size} promises, waiting for ${this._queue.length} more.`);const{key:s,resolve:r}=this._queue.shift();r({use:o=>this.add(s,o)})}}}function qe(i){const t=i.image?.width??0,e=i.image?.height??0,s=i.image?.depth??1,r=Math.floor(Math.log2(Math.max(t,e,s)))+1,o=Ne(i);return t*e*s*o*(1-Math.pow(.25,r))/(1-.25)}function Ne(i){let t=4;const e=i.format;e===1024||e===1025?t=1:e===1026||e===1027?t=2:e===1022||e===1029?t=3:(e===1023||e===1033)&&(t=4);let s=1;const r=i.type;return r===1009||r===1010?s=1:r===1011||r===1012?s=2:r===1013||r===1014||r===1015?s=4:r===1016&&(s=2),t*s}const Ee=typeof window>"u"&&typeof document>"u",ye=Symbol("needle:raycast-mesh");function j(i){return i?.[ye]instanceof c.BufferGeometry?i[ye]:null}function Xe(i,t){if((i.type==="Mesh"||i.type==="SkinnedMesh")&&!j(i)){const s=Ke(t);s.userData={isRaycastMesh:!0},i[ye]=s}}function je(i=!0){if(i){if(H)return;const t=H=c.Mesh.prototype.raycast;c.Mesh.prototype.raycast=function(e,s){const r=this,o=j(r);let n;o&&r.isMesh&&(n=r.geometry,r.geometry=o),t.call(this,e,s),n&&(r.geometry=n)}}else{if(!H)return;c.Mesh.prototype.raycast=H,H=null}}let H=null;function Ke(i){const t=new c.BufferGeometry;for(const e in i.attributes)t.setAttribute(e,i.getAttribute(e));return t.setIndex(i.getIndex()),t}const W=new Array,h=z("debugprogressive");let J,q=-1;if(h){let i=function(){q+=1,q>=t&&(q=-1),console.log(`Toggle LOD level [${q}]`)},t=6;window.addEventListener("keyup",e=>{e.key==="p"&&i(),e.key==="w"&&(J=!J,console.log(`Toggle wireframe [${J}]`));const s=parseInt(e.key);!isNaN(s)&&s>=0&&(q=s,console.log(`Set LOD level to [${q}]`))})}function Ce(i){if(h&&J!==void 0)if(Array.isArray(i))for(const t of i)Ce(t);else i&&"wireframe"in i&&(i.wireframe=J===!0)}const Q=new Array;let Ye=0;const He=Le()?2:10;function Qe(i){if(Q.length<He){const s=Q.length;h&&console.warn(`[Worker] Creating new worker #${s}`);const r=_e.createWorker(i||{});return Q.push(r),r}const t=Ye++%Q.length;return Q[t]}class _e{constructor(t,e){this.worker=t,this._debug=e.debug??!1,t.onmessage=s=>{const r=s.data;switch(this._debug&&console.log("[Worker] EVENT",r),r.type){case"loaded-gltf":for(const o of this._running)if(o.url===r.result.url){Je(r.result),o.resolve(r.result);const n=o.url;n.startsWith("blob:")&&URL.revokeObjectURL(n)}}},t.onerror=s=>{console.error("[Worker] Error in gltf-progressive worker:",s)},t.postMessage({type:"init"})}static async createWorker(t){const e=new Worker(new URL("/loader.worker-BqODMeeW.js",typeof document>"u"?require("url").pathToFileURL(__filename).href:le&&le.tagName.toUpperCase()==="SCRIPT"&&le.src||new URL("gltf-progressive-BacJPTD6.umd.cjs",document.baseURI).href),{type:"module"});return new _e(e,t)}_running=[];_webglRenderer=null;async load(t,e){const s=Fe();let r=e?.renderer;r||(this._webglRenderer??=(async()=>{const{WebGLRenderer:u}=await Promise.resolve().then(()=>require("./three.umd.cjs")).then(d=>d.THREE);return new u})(),r=await this._webglRenderer);const l=ne(r).ktx2Loader.workerConfig;t instanceof URL?t=t.toString():t.startsWith("file:")?t=URL.createObjectURL(new Blob([t])):!t.startsWith("blob:")&&!t.startsWith("http:")&&!t.startsWith("https:")&&(t=new URL(t,window.location.href).toString());const a={type:"load",url:t,dracoDecoderPath:s.dracoDecoderPath,ktx2TranscoderPath:s.ktx2TranscoderPath,ktx2LoaderConfig:l};return this._debug&&console.debug("[Worker] Sending load request",a),this.worker.postMessage(a),new Promise(u=>{this._running.push({url:t.toString(),resolve:u})})}_debug=!1}function Je(i){for(const t of i.geometries){const e=t.geometry,s=new c.BufferGeometry;if(s.name=e.name||"",e.index){const r=e.index;s.setIndex(ue(r))}for(const r in e.attributes){const o=e.attributes[r],n=ue(o);s.setAttribute(r,n)}if(e.morphAttributes)for(const r in e.morphAttributes){const n=e.morphAttributes[r].map(l=>ue(l));s.morphAttributes[r]=n}if(s.morphTargetsRelative=e.morphTargetsRelative??!1,s.boundingBox=new c.Box3,s.boundingBox.min=new c.Vector3(e.boundingBox?.min.x,e.boundingBox?.min.y,e.boundingBox?.min.z),s.boundingBox.max=new c.Vector3(e.boundingBox?.max.x,e.boundingBox?.max.y,e.boundingBox?.max.z),s.boundingSphere=new c.Sphere(new c.Vector3(e.boundingSphere?.center.x,e.boundingSphere?.center.y,e.boundingSphere?.center.z),e.boundingSphere?.radius),e.groups)for(const r of e.groups)s.addGroup(r.start,r.count,r.materialIndex);e.userData&&(s.userData=e.userData),t.geometry=s}for(const t of i.textures){const e=t.texture;let s=null;if(e.isCompressedTexture){const r=e.mipmaps,o=e.image?.width||e.source?.data?.width||-1,n=e.image?.height||e.source?.data?.height||-1;s=new c.CompressedTexture(r,o,n,e.format,e.type,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.anisotropy,e.colorSpace)}else s=new c.Texture(e.image,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.format,e.type,e.anisotropy,e.colorSpace),s.mipmaps=e.mipmaps,s.channel=e.channel,s.source.data=e.source.data,s.flipY=e.flipY,s.premultiplyAlpha=e.premultiplyAlpha,s.unpackAlignment=e.unpackAlignment,s.matrix=new c.Matrix3(...e.matrix.elements);if(!s){console.error("[Worker] Failed to create new texture from received data. Texture is not a CompressedTexture or Texture.");continue}t.texture=s}return i}function ue(i){let t=i;if("isInterleavedBufferAttribute"in i&&i.isInterleavedBufferAttribute){const e=i.data,s=e.array,r=new c.InterleavedBuffer(s,e.stride);t=new c.InterleavedBufferAttribute(r,i.itemSize,s.byteOffset,i.normalized),t.offset=i.offset}else"isBufferAttribute"in i&&i.isBufferAttribute&&(t=new c.BufferAttribute(i.array,i.itemSize,i.normalized),t.usage=i.usage,t.gpuType=i.gpuType,t.updateRanges=i.updateRanges);return t}const Ze=z("gltf-progressive-worker");z("gltf-progressive-reduce-mipmaps");const E=z("gltf-progressive-gc"),ce=Symbol("needle-progressive-texture"),F="NEEDLE_progressive";class m{get name(){return F}static getMeshLODExtension(t){const e=this.getAssignedLODInformation(t);return e?.key?this.lodInfos.get(e.key):null}static getPrimitiveIndex(t){const e=this.getAssignedLODInformation(t)?.index;return e??-1}static getMaterialMinMaxLODsCount(t,e){const s=this,r="LODS:minmax",o=t[r];if(o!=null)return o;if(e||(e={min_count:1/0,max_count:0,lods:[]}),Array.isArray(t)){for(const l of t)this.getMaterialMinMaxLODsCount(l,e);return t[r]=e,e}if(h==="verbose"&&console.log("getMaterialMinMaxLODsCount",t),t.type==="ShaderMaterial"||t.type==="RawShaderMaterial"){const l=t;for(const a of Object.keys(l.uniforms)){const u=l.uniforms[a].value;u?.isTexture===!0&&n(u,e)}}else if(t.isMaterial)for(const l of Object.keys(t)){const a=t[l];a?.isTexture===!0&&n(a,e)}else h&&console.warn(`[getMaterialMinMaxLODsCount] Unsupported material type: ${t.type}`);return t[r]=e,e;function n(l,a){const u=s.getAssignedLODInformation(l);if(u){const d=s.lodInfos.get(u.key);if(d&&d.lods){a.min_count=Math.min(a.min_count,d.lods.length),a.max_count=Math.max(a.max_count,d.lods.length);for(let x=0;x<d.lods.length;x++){const L=d.lods[x];L.width&&(a.lods[x]=a.lods[x]||{min_height:1/0,max_height:0},a.lods[x].min_height=Math.min(a.lods[x].min_height,L.height),a.lods[x].max_height=Math.max(a.lods[x].max_height,L.height))}}}}}static hasLODLevelAvailable(t,e){if(Array.isArray(t)){for(const o of t)if(this.hasLODLevelAvailable(o,e))return!0;return!1}if(t.isMaterial===!0){for(const o of Object.keys(t)){const n=t[o];if(n&&n.isTexture&&this.hasLODLevelAvailable(n,e))return!0}return!1}else if(t.isGroup===!0){for(const o of t.children)if(o.isMesh===!0&&this.hasLODLevelAvailable(o,e))return!0}let s,r;if(t.isMesh?s=t.geometry:(t.isBufferGeometry||t.isTexture)&&(s=t),s&&s?.userData?.LODS){const o=s.userData.LODS;if(r=this.lodInfos.get(o.key),e===void 0)return r!=null;if(r)return Array.isArray(r.lods)?e<r.lods.length:e===0}return!1}static assignMeshLOD(t,e){if(!t)return Promise.resolve(null);if(t instanceof c.Mesh||t.isMesh===!0){const s=t.geometry,r=this.getAssignedLODInformation(s);if(!r)return Promise.resolve(null);for(const o of W)o.onBeforeGetLODMesh?.(t,e);return t["LOD:requested level"]=e,m.getOrLoadLOD(s,e).then(o=>{if(Array.isArray(o)){const n=r.index||0;o=o[n]}return t["LOD:requested level"]===e&&(delete t["LOD:requested level"],o&&s!=o&&(o?.isBufferGeometry?t.geometry=o:h&&console.error("Invalid LOD geometry",o))),o}).catch(o=>(console.error("Error loading mesh LOD",t,o),null))}else h&&console.error("Invalid call to assignMeshLOD: Request mesh LOD but the object is not a mesh",t);return Promise.resolve(null)}static assignTextureLOD(t,e=0){if(!t)return Promise.resolve(null);if(t.isMesh===!0){const s=t;if(Array.isArray(s.material)){const r=new Array;for(const o of s.material){const n=this.assignTextureLOD(o,e);r.push(n)}return Promise.all(r).then(o=>{const n=new Array;for(const l of o)Array.isArray(l)&&n.push(...l);return n})}else return this.assignTextureLOD(s.material,e)}if(t.isMaterial===!0){const s=t,r=[],o=new Array;if(s.uniforms&&(s.isRawShaderMaterial||s.isShaderMaterial===!0)){const n=s;for(const l of Object.keys(n.uniforms)){const a=n.uniforms[l].value;if(a?.isTexture===!0){const u=this.assignTextureLODForSlot(a,e,s,l).then(d=>(d&&n.uniforms[l].value!=d&&(n.uniforms[l].value=d,n.uniformsNeedUpdate=!0),d));r.push(u),o.push(l)}}}else for(const n of Object.keys(s)){const l=s[n];if(l?.isTexture===!0){const a=this.assignTextureLODForSlot(l,e,s,n);r.push(a),o.push(n)}}return Promise.all(r).then(n=>{const l=new Array;for(let a=0;a<n.length;a++){const u=n[a],d=o[a];u&&u.isTexture===!0?l.push({material:s,slot:d,texture:u,level:e}):l.push({material:s,slot:d,texture:null,level:e})}return l})}if(t instanceof c.Texture||t.isTexture===!0){const s=t;return this.assignTextureLODForSlot(s,e,null,null)}return Promise.resolve(null)}static set maxConcurrentLoadingTasks(t){m.queue.maxConcurrent=t}static get maxConcurrentLoadingTasks(){return m.queue.maxConcurrent}static assignTextureLODForSlot(t,e,s,r){return t?.isTexture!==!0?Promise.resolve(null):r==="glyphMap"?Promise.resolve(t):m.getOrLoadLOD(t,e).then(o=>{if(Array.isArray(o))return console.warn("Progressive: Got an array of textures for a texture slot, this should not happen..."),null;if(o?.isTexture===!0){if(o!=t&&s&&r){const n=s[r];if(n&&!h){const l=this.getAssignedLODInformation(n);if(l&&l?.level<e)return h==="verbose"&&console.warn("Assigned texture level is already higher: ",l.level,e,s,n,o),o&&o!==n&&((h||E)&&console.log(`[gltf-progressive] Disposing rejected lower-quality texture LOD ${e} (assigned is ${l.level})`,o.uuid),o.dispose()),null}if(this.trackTextureUsage(o),n&&n!==o&&this.untrackTextureUsage(n)&&(h||E)){const a=this.getAssignedLODInformation(n);console.log(`[gltf-progressive] Disposed old texture LOD ${a?.level??"?"} → ${e} for ${s.name||s.type}.${r}`,n.uuid)}s[r]=o}return o}else h=="verbose"&&console.warn("No LOD found for",t,e);return null}).catch(o=>(console.error("Error loading LOD",t,o),null))}parser;url;constructor(t){const e=t.options.path;h&&console.log("Progressive extension registered for",e),this.parser=t,this.url=e}_isLoadingMesh;loadMesh=t=>{if(this._isLoadingMesh)return null;const e=this.parser.json.meshes[t]?.extensions?.[F];return e?(this._isLoadingMesh=!0,this.parser.getDependency("mesh",t).then(s=>(this._isLoadingMesh=!1,s&&m.registerMesh(this.url,e.guid,s,e.lods?.length,0,e),s))):null};afterRoot(t){return h&&console.log("AFTER",this.url,t),this.parser.json.textures?.forEach((e,s)=>{if(e?.extensions){const r=e?.extensions[F];if(r){if(!r.lods){h&&console.warn("Texture has no LODs",r);return}let o=!1;for(const n of this.parser.associations.keys())n.isTexture===!0&&this.parser.associations.get(n)?.textures===s&&(o=!0,m.registerTexture(this.url,n,r.lods?.length,s,r));o||this.parser.getDependency("texture",s).then(n=>{n&&m.registerTexture(this.url,n,r.lods?.length,s,r)})}}}),this.parser.json.meshes?.forEach((e,s)=>{if(e?.extensions){const r=e?.extensions[F];if(r&&r.lods){for(const o of this.parser.associations.keys())if(o.isMesh){const n=this.parser.associations.get(o);n?.meshes===s&&m.registerMesh(this.url,r.guid,o,r.lods.length,n.primitives,r)}}}}),null}static registerTexture=(t,e,s,r,o)=>{if(!e){h&&console.error("!! gltf-progressive: Called register texture without texture");return}if(h){const l=e.image?.width||e.source?.data?.width||0,a=e.image?.height||e.source?.data?.height||0;console.log(`> gltf-progressive: register texture[${r}] "${e.name||e.uuid}", Current: ${l}x${a}, Max: ${o.lods[0]?.width}x${o.lods[0]?.height}, uuid: ${e.uuid}`,o,e)}e.source&&(e.source[ce]=o);const n=o.guid;m.assignLODInformation(t,e,n,s,r),m.lodInfos.set(n,o),m.lowresCache.set(n,new WeakRef(e))};static registerMesh=(t,e,s,r,o,n)=>{const l=s.geometry;if(!l){h&&console.warn("gltf-progressive: Register mesh without geometry");return}l.userData||(l.userData={}),h&&console.log("> Progressive: register mesh "+s.name,{index:o,uuid:s.uuid},n,s),m.assignLODInformation(t,l,e,r,o),m.lodInfos.set(e,n);let u=m.lowresCache.get(e)?.deref();u?u.push(s.geometry):u=[s.geometry],m.lowresCache.set(e,new WeakRef(u)),r>0&&!j(s)&&Xe(s,l);for(const d of W)d.onRegisteredNewMesh?.(s,n)};static dispose(t){if(t){this.lodInfos.delete(t);const e=this.lowresCache.get(t);if(e){const s=e.deref();if(s){if(s.isTexture){const r=s;this.textureRefCounts.delete(r.uuid),r.dispose()}else if(Array.isArray(s))for(const r of s)r.dispose()}this.lowresCache.delete(t)}for(const[s,r]of this.cache)s.includes(t)&&(this._disposeCacheEntry(r),this.cache.delete(s))}else{this.lodInfos.clear();for(const[,e]of this.lowresCache){const s=e.deref();if(s){if(s.isTexture){const r=s;this.textureRefCounts.delete(r.uuid),r.dispose()}else if(Array.isArray(s))for(const r of s)r.dispose()}}this.lowresCache.clear();for(const[,e]of this.cache)this._disposeCacheEntry(e);this.cache.clear(),this.textureRefCounts.clear()}}static _disposeCacheEntry(t){if(t instanceof WeakRef){const e=t.deref();e&&(e.isTexture&&this.textureRefCounts.delete(e.uuid),e.dispose())}else t.then(e=>{if(e)if(Array.isArray(e))for(const s of e)s.dispose();else e.isTexture&&this.textureRefCounts.delete(e.uuid),e.dispose()}).catch(()=>{})}static lodInfos=new Map;static cache=new Map;static lowresCache=new Map;static textureRefCounts=new Map;static _resourceRegistry=new FinalizationRegistry(t=>{const e=m.cache.get(t);(h||E)&&console.debug(`[gltf-progressive] Memory: Resource GC'd
${t}`),e instanceof WeakRef&&(e.deref()||(m.cache.delete(t),(h||E)&&console.log("[gltf-progressive] ↪ Cache entry deleted (GC)")))});static trackTextureUsage(t){const e=t.uuid,s=this.textureRefCounts.get(e)||0;this.textureRefCounts.set(e,s+1),h==="verbose"&&console.log(`[gltf-progressive] Track texture ${e}, refCount: ${s} → ${s+1}`)}static untrackTextureUsage(t){const e=t.uuid,s=this.textureRefCounts.get(e);if(!s)return(h==="verbose"||E)&&o("[gltf-progressive] Memory: Untrack untracked texture (dispose immediately)",0),t.dispose(),!0;const r=s-1;if(r<=0)return this.textureRefCounts.delete(e),(h||E)&&o("[gltf-progressive] Memory: Dispose texture",r),t.dispose(),!0;return this.textureRefCounts.set(e,r),h==="verbose"&&o("[gltf-progressive] Memory: Untrack texture",r),!1;function o(n,l){let a=t.image?.width||t.source?.data?.width||0,u=t.image?.height||t.source?.data?.height||0;const d=a&&u?`${a}x${u}`:"N/A";let x="N/A";a&&u&&(x=`~${(qe(t)/(1024*1024)).toFixed(2)} MB`),console.log(`${n} — ${t.name} ${d} (${x}), refCount: ${s} → ${l}
${e}`)}}static workers=[];static _workersIndex=0;static async getOrLoadLOD(t,e){const s=h=="verbose",r=this.getAssignedLODInformation(t);if(!r)return h&&console.warn(`[gltf-progressive] No LOD information found: ${t.name}, uuid: ${t.uuid}, type: ${t.type}`,t),null;const o=r?.key;let n;if(t.isTexture===!0){const a=t;a.source&&a.source[ce]&&(n=a.source[ce])}if(n||(n=m.lodInfos.get(o)),!n)h&&console.warn(`Can not load LOD ${e}: no LOD info found for "${o}" ${t.name}`,t.type,m.lodInfos);else{if(e>0){let d=!1;const x=Array.isArray(n.lods);if(x&&e>=n.lods.length?d=!0:x||(d=!0),d){const L=this.lowresCache.get(o);if(L){const _=L.deref();if(_)return _;this.lowresCache.delete(o),h&&console.log(`[gltf-progressive] Lowres cache entry was GC'd: ${o}`)}return null}}const a=Array.isArray(n.lods)?n.lods[e]?.path:n.lods;if(!a)return h&&!n["missing:uri"]&&(n["missing:uri"]=!0,console.warn("Missing uri for progressive asset for LOD "+e,n)),null;const u=ze(r.url,a);if(u.endsWith(".glb")||u.endsWith(".gltf")){if(!n.guid)return console.warn("missing pointer for glb/gltf texture",n),null;const d=u+"_"+n.guid,x=await this.queue.slot(u),L=this.cache.get(d);if(L!==void 0)if(s&&console.log(`LOD ${e} was already loading/loaded: ${d}`),L instanceof WeakRef){const f=L.deref();if(f){let p=f,v=!1;if(p instanceof c.Texture&&t instanceof c.Texture?p.image?.data||p.source?.data?p=this.copySettings(t,p):v=!0:p instanceof c.BufferGeometry&&t instanceof c.BufferGeometry&&(p.attributes.position?.array||(v=!0)),!v)return p}this.cache.delete(d),h&&console.log(`[gltf-progressive] Re-loading GC'd/disposed resource: ${d}`)}else{let f=await L.catch(v=>(console.error(`Error loading LOD ${e} from ${u}
`,v),null)),p=!1;if(f==null||(f instanceof c.Texture&&t instanceof c.Texture?f.image?.data||f.source?.data?f=this.copySettings(t,f):(p=!0,this.cache.delete(d)):f instanceof c.BufferGeometry&&t instanceof c.BufferGeometry&&(f.attributes.position?.array||(p=!0,this.cache.delete(d)))),!p)return f}if(!x.use)return h&&console.log(`LOD ${e} was aborted: ${u}`),null;const _=n,k=new Promise(async(f,p)=>{if(Ze){const w=await(await Qe({})).load(u);if(w.textures.length>0)for(const g of w.textures){let y=g.texture;return m.assignLODInformation(r.url,y,o,e,void 0),t instanceof c.Texture&&(y=this.copySettings(t,y)),y&&(y.guid=_.guid),f(y)}if(w.geometries.length>0){const g=new Array;for(const y of w.geometries){const O=y.geometry;m.assignLODInformation(r.url,O,o,e,y.primitiveIndex),g.push(O)}return f(g)}return f(null)}const v=new X.GLTFLoader;xe(v),h&&(await new Promise(M=>setTimeout(M,1e3)),s&&console.warn("Start loading (delayed) "+u,_.guid));let B=u;if(_&&Array.isArray(_.lods)){const M=_.lods[e];M.hash&&(B+="?v="+M.hash)}const b=await v.loadAsync(B).catch(M=>(console.error(`Error loading LOD ${e} from ${u}
`,M),f(null)));if(!b)return f(null);const V=b.parser;s&&console.log("Loading finished "+u,_.guid);let P=0;if(b.parser.json.textures){let M=!1;for(const w of b.parser.json.textures){if(w?.extensions){const g=w?.extensions[F];if(g?.guid&&g.guid===_.guid){M=!0;break}}P++}if(M){let w=await V.getDependency("texture",P);return w&&m.assignLODInformation(r.url,w,o,e,void 0),s&&console.log('change "'+t.name+'" → "'+w.name+'"',u,P,w,d),t instanceof c.Texture&&(w=this.copySettings(t,w)),w&&(w.guid=_.guid),f(w)}else h&&console.warn("Could not find texture with guid",_.guid,b.parser.json)}if(P=0,b.parser.json.meshes){let M=!1;for(const w of b.parser.json.meshes){if(w?.extensions){const g=w?.extensions[F];if(g?.guid&&g.guid===_.guid){M=!0;break}}P++}if(M){const w=await V.getDependency("mesh",P);if(s&&console.log(`Loaded Mesh "${w.name}"`,u,P,w,d),w.isMesh===!0){const g=w.geometry;return m.assignLODInformation(r.url,g,o,e,0),f(g)}else{const g=new Array;for(let y=0;y<w.children.length;y++){const O=w.children[y];if(O.isMesh===!0){const S=O.geometry;m.assignLODInformation(r.url,S,o,e,y),g.push(S)}}return f(g)}}else h&&console.warn("Could not find mesh with guid",_.guid,b.parser.json)}return f(null)});this.cache.set(d,k),x.use(k);const D=await k;return D!=null?D instanceof c.Texture?(this.cache.set(d,new WeakRef(D)),m._resourceRegistry.register(D,d)):Array.isArray(D)?this.cache.set(d,Promise.resolve(D)):this.cache.set(d,Promise.resolve(D)):this.cache.set(d,Promise.resolve(null)),D}else if(t instanceof c.Texture){s&&console.log("Load texture from uri: "+u);const x=await new c.TextureLoader().loadAsync(u);return x?(x.guid=n.guid,x.flipY=!1,x.needsUpdate=!0,x.colorSpace=t.colorSpace,s&&console.log(n,x)):h&&console.warn("failed loading",u),x}}return null}static queue=new Ve(Le()?20:50,{debug:h!=!1});static assignLODInformation(t,e,s,r,o){if(!e)return;e.userData||(e.userData={});const n=new et(t,s,r,o);e.userData.LODS=n,"source"in e&&typeof e.source=="object"&&(e.source.LODS=n)}static getAssignedLODInformation(t){return t?t.userData?.LODS?t.userData.LODS:"source"in t&&t.source?.LODS?t.source.LODS:null:null}static copySettings(t,e){return e?(h==="verbose"&&console.debug(`Copy texture settings
`,t.uuid,`
`,e.uuid),e=e.clone(),e.offset=t.offset,e.repeat=t.repeat,e.colorSpace=t.colorSpace,e.magFilter=t.magFilter,e.minFilter=t.minFilter,e.wrapS=t.wrapS,e.wrapT=t.wrapT,e.flipY=t.flipY,e.anisotropy=t.anisotropy,e.mipmaps||(e.generateMipmaps=t.generateMipmaps),e):t}}class et{url;key;level;index;constructor(t,e,s,r){this.url=t,this.key=e,this.level=s,r!=null&&(this.index=r)}}class de{static addPromise=(t,e,s,r)=>{r.forEach(o=>{o.add(t,e,s)})};ready;get awaitedCount(){return this._addedCount}get resolvedCount(){return this._resolvedCount}get currentlyAwaiting(){return this._awaiting.length}_resolve;_signal;_frame_start;_frames_to_capture;_resolved=!1;_addedCount=0;_resolvedCount=0;_awaiting=[];_maxPromisesPerObject=1;constructor(t,e){const r=Math.max(e.frames??2,2);this._frame_start=e.waitForFirstCapture?void 0:t,this._frames_to_capture=r,this.ready=new Promise(o=>{this._resolve=o}),this.ready.finally(()=>{this._resolved=!0,this._awaiting.length=0}),this._signal=e.signal,this._signal?.addEventListener("abort",()=>{this.resolveNow()}),this._maxPromisesPerObject=Math.max(1,e.maxPromisesPerObject??1)}_currentFrame=0;update(t){this._currentFrame=t,this._frame_start===void 0&&this._addedCount>0&&(this._frame_start=t),(this._signal?.aborted||this._awaiting.length===0&&this._frame_start!==void 0&&t>this._frame_start+this._frames_to_capture)&&this.resolveNow()}_seen=new WeakMap;add(t,e,s){if(this._resolved){h&&console.warn("PromiseGroup: Trying to add a promise to a resolved group, ignoring.");return}if(!(this._frame_start!==void 0&&this._currentFrame>this._frame_start+this._frames_to_capture)){if(this._maxPromisesPerObject>=1)if(this._seen.has(e)){let r=this._seen.get(e);if(r>=this._maxPromisesPerObject){h&&console.warn("PromiseGroup: Already awaiting object ignoring new promise for it.");return}this._seen.set(e,r+1)}else this._seen.set(e,1);this._awaiting.push(s),this._addedCount++,s.finally(()=>{this._resolvedCount++,this._awaiting.splice(this._awaiting.indexOf(s),1)})}}resolveNow(){this._resolved||this._resolve?.({awaited_count:this._addedCount,resolved_count:this._resolvedCount,cancelled:this._signal?.aborted??!1})}}const R=z("debugprogressive"),tt=z("noprogressive"),fe=Symbol("Needle:LODSManager"),he=Symbol("Needle:LODState"),U=Symbol("Needle:CurrentLOD"),C={mesh_lod:-1,texture_lod:-1};let Z=class T{static debugDrawLine;static getObjectLODState(t){return t[he]}static addPlugin(t){W.push(t)}static removePlugin(t){const e=W.indexOf(t);e>=0&&W.splice(e,1)}static get(t,e){if(t[fe])return console.debug("[gltf-progressive] LODsManager already exists for this renderer"),t[fe];const s=new T(t,{engine:"unknown",...e});return t[fe]=s,s}renderer;context;projectionScreenMatrix=new c.Matrix4;get plugins(){return W}overrideLodLevel=void 0;targetTriangleDensity=2e5;skinnedMeshAutoUpdateBoundsInterval=30;updateInterval="auto";#e=1;pause=!1;manual=!1;_newPromiseGroups=[];_promiseGroupIds=0;awaitLoading(t){const e=this._promiseGroupIds++,s=new de(this.#r,{...t});this._newPromiseGroups.push(s);const r=performance.now();return s.ready.finally(()=>{const o=this._newPromiseGroups.indexOf(s);o>=0&&(this._newPromiseGroups.splice(o,1),Me()&&performance.measure("LODsManager:awaitLoading",{start:r,detail:{id:e,name:t?.name,awaited:s.awaitedCount,resolved:s.resolvedCount}}))}),s.ready}_postprocessPromiseGroups(){if(this._newPromiseGroups.length!==0)for(let t=this._newPromiseGroups.length-1;t>=0;t--)this._newPromiseGroups[t].update(this.#r)}_lodchangedlisteners=[];addEventListener(t,e){t==="changed"&&this._lodchangedlisteners.push(e)}removeEventListener(t,e){if(t==="changed"){const s=this._lodchangedlisteners.indexOf(e);s>=0&&this._lodchangedlisteners.splice(s,1)}}constructor(t,e){this.renderer=t,this.context={...e}}#t;#n=new c.Clock;#r=0;#o=0;#i=0;#s=0;_fpsBuffer=[60,60,60,60,60];enable(){if(this.#t)return;console.debug("[gltf-progressive] Enabling LODsManager for renderer");let t=0;this.#t=this.renderer.render;const e=this;ne(this.renderer),this.renderer.render=function(s,r){const o=e.renderer.getRenderTarget();(o==null||"isXRRenderTarget"in o&&o.isXRRenderTarget)&&(t=0,e.#r+=1,e.#o=e.#n.getDelta(),e.#i+=e.#o,e._fpsBuffer.shift(),e._fpsBuffer.push(1/e.#o),e.#s=e._fpsBuffer.reduce((l,a)=>l+a)/e._fpsBuffer.length,R&&e.#r%200===0&&console.log("FPS",Math.round(e.#s),"Interval:",e.#e));const n=t++;e.#t.call(this,s,r),e.onAfterRender(s,r,n)}}disable(){this.#t&&(console.debug("[gltf-progressive] Disabling LODsManager for renderer"),this.renderer.render=this.#t,this.#t=void 0)}update(t,e){this.internalUpdate(t,e)}onAfterRender(t,e,s){if(this.pause)return;const o=this.renderer.renderLists.get(t,0).opaque;let n=!0;if(o.length===1){const l=o[0].material;(l.name==="EffectMaterial"||l.name==="CopyShader")&&(n=!1)}if((e.parent&&e.parent.type==="CubeCamera"||s>=1&&e.type==="OrthographicCamera")&&(n=!1),n){if(tt||(this.updateInterval==="auto"?this.#s<40&&this.#e<10?(this.#e+=1,R&&console.warn("↓ Reducing LOD updates",this.#e,this.#s.toFixed(0))):this.#s>=60&&this.#e>1&&(this.#e-=1,R&&console.warn("↑ Increasing LOD updates",this.#e,this.#s.toFixed(0))):this.#e=this.updateInterval,this.#e>0&&this.#r%this.#e!=0))return;this.internalUpdate(t,e),this._postprocessPromiseGroups()}}internalUpdate(t,e){const s=this.renderer.renderLists.get(t,0),r=s.opaque;this.projectionScreenMatrix.multiplyMatrices(e.projectionMatrix,e.matrixWorldInverse);const o=this.targetTriangleDensity;for(const a of r){if(a.material&&(a.geometry?.type==="BoxGeometry"||a.geometry?.type==="BufferGeometry")&&(a.material.name==="SphericalGaussianBlur"||a.material.name=="BackgroundCubeMaterial"||a.material.name==="CubemapFromEquirect"||a.material.name==="EquirectangularToCubeUV")){R&&(a.material["NEEDLE_PROGRESSIVE:IGNORE-WARNING"]||(a.material["NEEDLE_PROGRESSIVE:IGNORE-WARNING"]=!0,console.warn("Ignoring skybox or BLIT object",a,a.material.name,a.material.type)));continue}switch(a.material.type){case"LineBasicMaterial":case"LineDashedMaterial":case"PointsMaterial":case"ShadowMaterial":case"MeshDistanceMaterial":case"MeshDepthMaterial":continue}if(R==="color"&&a.material&&!a.object.progressive_debug_color){a.object.progressive_debug_color=!0;const d=Math.random()*16777215,x=new c.MeshStandardMaterial({color:d});a.object.material=x}const u=a.object;(u instanceof c.Mesh||u.isMesh)&&this.updateLODs(t,e,u,o)}const n=s.transparent;for(const a of n){const u=a.object;(u instanceof c.Mesh||u.isMesh)&&this.updateLODs(t,e,u,o)}const l=s.transmissive;for(const a of l){const u=a.object;(u instanceof c.Mesh||u.isMesh)&&this.updateLODs(t,e,u,o)}}updateLODs(t,e,s,r){s.userData||(s.userData={});let o=s[he];if(o||(o=new st,s[he]=o),o.frames++<2)return;for(const l of W)l.onBeforeUpdateLOD?.(this.renderer,t,e,s);const n=this.overrideLodLevel!==void 0?this.overrideLodLevel:q;n>=0?(C.mesh_lod=n,C.texture_lod=n):(this.calculateLodLevel(e,s,o,r,C),C.mesh_lod=Math.round(C.mesh_lod),C.texture_lod=Math.round(C.texture_lod)),C.mesh_lod>=0&&this.loadProgressiveMeshes(s,C.mesh_lod),s.material&&C.texture_lod>=0&&this.loadProgressiveTextures(s.material,C.texture_lod,n),h&&s.material&&!s.isGizmo&&Ce(s.material);for(const l of W)l.onAfterUpdatedLOD?.(this.renderer,t,e,s,C);o.lastLodLevel_Mesh=C.mesh_lod,o.lastLodLevel_Texture=C.texture_lod}loadProgressiveTextures(t,e,s){if(!t)return;if(Array.isArray(t)){for(const o of t)this.loadProgressiveTextures(o,e);return}let r=!1;if((t[U]===void 0||e<t[U])&&(r=!0),s!==void 0&&s>=0&&(r=t[U]!=s,e=s),r){t[U]=e;const o=m.assignTextureLOD(t,e).then(n=>{this._lodchangedlisteners.forEach(l=>l({type:"texture",level:e,object:t}))});de.addPromise("texture",t,o,this._newPromiseGroups)}}loadProgressiveMeshes(t,e){if(!t)return Promise.resolve(null);let s=t[U]!==e;const r=t["DEBUG:LOD"];if(r!=null&&(s=t[U]!=r,e=r),s){t[U]=e;const o=t.geometry,n=m.assignMeshLOD(t,e).then(l=>(l&&t[U]==e&&o!=t.geometry&&this._lodchangedlisteners.forEach(a=>a({type:"mesh",level:e,object:t})),l));return de.addPromise("mesh",t,n,this._newPromiseGroups),n}return Promise.resolve(null)}_sphere=new c.Sphere;_tempBox=new c.Box3;_tempBox2=new c.Box3;tempMatrix=new c.Matrix4;_tempWorldPosition=new c.Vector3;_tempBoxSize=new c.Vector3;_tempBox2Size=new c.Vector3;static corner0=new c.Vector3;static corner1=new c.Vector3;static corner2=new c.Vector3;static corner3=new c.Vector3;static _tempPtInside=new c.Vector3;static isInside(t,e){const s=t.min,r=t.max,o=(s.x+r.x)*.5,n=(s.y+r.y)*.5;return this._tempPtInside.set(o,n,s.z).applyMatrix4(e).z<0}static skinnedMeshBoundsFrameOffsetCounter=0;static $skinnedMeshBoundsOffset=Symbol("gltf-progressive-skinnedMeshBoundsOffset");calculateLodLevel(t,e,s,r,o){if(!e){o.mesh_lod=-1,o.texture_lod=-1;return}if(!t){o.mesh_lod=-1,o.texture_lod=-1;return}let l=10+1,a=!1;if(R&&e["DEBUG:LOD"]!=null)return e["DEBUG:LOD"];const u=m.getMeshLODExtension(e.geometry)?.lods,d=m.getPrimitiveIndex(e.geometry),x=u&&u.length>0,L=m.getMaterialMinMaxLODsCount(e.material),_=L.min_count!==1/0&&L.min_count>=0&&L.max_count>=0;if(!x&&!_){o.mesh_lod=0,o.texture_lod=0;return}x||(a=!0,l=0);const k=this.renderer.domElement.clientHeight||this.renderer.domElement.height;let D=e.geometry.boundingBox;if(e.type==="SkinnedMesh"){const f=e;if(!f.boundingBox)f.computeBoundingBox();else if(this.skinnedMeshAutoUpdateBoundsInterval>0){if(!f[T.$skinnedMeshBoundsOffset]){const v=T.skinnedMeshBoundsFrameOffsetCounter++;f[T.$skinnedMeshBoundsOffset]=v}const p=f[T.$skinnedMeshBoundsOffset];if((s.frames+p)%this.skinnedMeshAutoUpdateBoundsInterval===0){const v=j(f),B=f.geometry;v&&(f.geometry=v),f.computeBoundingBox(),f.geometry=B}}D=f.boundingBox}if(D){const f=t;if(e.geometry.attributes.color&&e.geometry.attributes.color.count<100&&e.geometry.boundingSphere){this._sphere.copy(e.geometry.boundingSphere),this._sphere.applyMatrix4(e.matrixWorld);const g=t.getWorldPosition(this._tempWorldPosition);if(this._sphere.containsPoint(g)){o.mesh_lod=0,o.texture_lod=0;return}}if(this._tempBox.copy(D),this._tempBox.applyMatrix4(e.matrixWorld),f.isPerspectiveCamera&&T.isInside(this._tempBox,this.projectionScreenMatrix)){o.mesh_lod=0,o.texture_lod=0;return}if(this._tempBox.applyMatrix4(this.projectionScreenMatrix),this.renderer.xr.enabled&&f.isPerspectiveCamera&&f.fov>70){const g=this._tempBox.min,y=this._tempBox.max;let O=g.x,S=g.y,G=y.x,K=y.y;const ee=2,ie=1.5,te=(g.x+y.x)*.5,se=(g.y+y.y)*.5;O=(O-te)*ee+te,S=(S-se)*ee+se,G=(G-te)*ee+te,K=(K-se)*ee+se;const Re=O<0&&G>0?0:Math.min(Math.abs(g.x),Math.abs(y.x)),Ie=S<0&&K>0?0:Math.min(Math.abs(g.y),Math.abs(y.y)),ae=Math.max(Re,Ie);s.lastCentrality=(ie-ae)*(ie-ae)*(ie-ae)}else s.lastCentrality=1;const p=this._tempBox.getSize(this._tempBoxSize);p.multiplyScalar(.5),screen.availHeight>0&&k>0&&p.multiplyScalar(k/screen.availHeight),t.isPerspectiveCamera?p.x*=t.aspect:t.isOrthographicCamera;const v=t.matrixWorldInverse,B=this._tempBox2;B.copy(D),B.applyMatrix4(e.matrixWorld),B.applyMatrix4(v);const b=B.getSize(this._tempBox2Size),V=Math.max(b.x,b.y);if(Math.max(p.x,p.y)!=0&&V!=0&&(p.z=b.z/Math.max(b.x,b.y)*Math.max(p.x,p.y)),s.lastScreenCoverage=Math.max(p.x,p.y,p.z),s.lastScreenspaceVolume.copy(p),s.lastScreenCoverage*=s.lastCentrality,R&&T.debugDrawLine){const g=this.tempMatrix.copy(this.projectionScreenMatrix);g.invert();const y=T.corner0,O=T.corner1,S=T.corner2,G=T.corner3;y.copy(this._tempBox.min),O.copy(this._tempBox.max),O.x=y.x,S.copy(this._tempBox.max),S.y=y.y,G.copy(this._tempBox.max);const K=(y.z+G.z)*.5;y.z=O.z=S.z=G.z=K,y.applyMatrix4(g),O.applyMatrix4(g),S.applyMatrix4(g),G.applyMatrix4(g),T.debugDrawLine(y,O,255),T.debugDrawLine(y,S,255),T.debugDrawLine(O,G,255),T.debugDrawLine(S,G,255)}let M=999;if(u&&s.lastScreenCoverage>0)for(let g=0;g<u.length;g++){const y=u[g],S=(y.densities?.[d]||y.density||1e-5)/s.lastScreenCoverage;if(d>0&&Me()&&!y.densities&&!globalThis["NEEDLE:MISSING_LOD_PRIMITIVE_DENSITIES"]&&(window["NEEDLE:MISSING_LOD_PRIMITIVE_DENSITIES"]=!0,console.warn("[Needle Progressive] Detected usage of mesh without primitive densities. This might cause incorrect LOD level selection: Consider re-optimizing your model by updating your Needle Integration, Needle glTF Pipeline or running optimization again on Needle Cloud.")),S<r){M=g;break}}M<l&&(l=M,a=!0)}if(a?o.mesh_lod=l:o.mesh_lod=s.lastLodLevel_Mesh,R&&o.mesh_lod!=s.lastLodLevel_Mesh){const p=u?.[o.mesh_lod];p&&console.log(`Mesh LOD changed: ${s.lastLodLevel_Mesh} → ${o.mesh_lod} (density: ${p.densities?.[d].toFixed(0)}) | ${e.name}`)}if(_){const f="saveData"in globalThis.navigator&&globalThis.navigator.saveData===!0;if(s.lastLodLevel_Texture<0){if(o.texture_lod=L.max_count-1,R){const p=L.lods[L.max_count-1];R&&console.log(`First Texture LOD ${o.texture_lod} (${p.max_height}px) - ${e.name}`)}}else{const p=s.lastScreenspaceVolume.x+s.lastScreenspaceVolume.y+s.lastScreenspaceVolume.z;let v=s.lastScreenCoverage*4;this.context?.engine==="model-viewer"&&(v*=1.5);const b=k/window.devicePixelRatio*v;let V=!1;for(let P=L.lods.length-1;P>=0;P--){const M=L.lods[P];if(!(f&&M.max_height>=2048)&&!(Le()&&M.max_height>4096)&&(M.max_height>b||!V&&P===0)){if(V=!0,o.texture_lod=P,R&&o.texture_lod<s.lastLodLevel_Texture){const w=M.max_height;console.log(`Texture LOD changed: ${s.lastLodLevel_Texture} → ${o.texture_lod} = ${w}px 
Screensize: ${b.toFixed(0)}px, Coverage: ${(100*s.lastScreenCoverage).toFixed(2)}%, Volume ${p.toFixed(1)} 
${e.name}`)}break}}}}else o.texture_lod=0}};class st{frames=0;lastLodLevel_Mesh=-1;lastLodLevel_Texture=-1;lastScreenCoverage=0;lastScreenspaceVolume=new c.Vector3;lastCentrality=0}const ve=Symbol("NEEDLE_mesh_lod"),re=Symbol("NEEDLE_texture_lod");let ge=null;function Ae(){const i=rt();i&&(i.mapURLs(function(t){return De(),t}),De(),ge?.disconnect(),ge=new MutationObserver(t=>{t.forEach(e=>{e.addedNodes.forEach(s=>{s instanceof HTMLElement&&s.tagName.toLowerCase()==="model-viewer"&&ke(s)})})}),ge.observe(document,{childList:!0,subtree:!0}))}function rt(){if(typeof customElements>"u")return null;const i=customElements.get("model-viewer");return i||(customElements.whenDefined("model-viewer").then(()=>{console.debug("[gltf-progressive] model-viewer defined"),Ae()}),null)}function De(){if(typeof document>"u")return;document.querySelectorAll("model-viewer").forEach(t=>{ke(t)})}const be=new WeakSet;let ot=0;function ke(i){if(!i||be.has(i))return null;be.add(i),console.debug("[gltf-progressive] found new model-viewer..."+ ++ot+`
`,i.getAttribute("src"));let t=null,e=null,s=null;for(let r=i;r!=null;r=Object.getPrototypeOf(r)){const o=Object.getOwnPropertySymbols(r),n=o.find(u=>u.toString()=="Symbol(renderer)"),l=o.find(u=>u.toString()=="Symbol(scene)"),a=o.find(u=>u.toString()=="Symbol(needsRender)");!t&&n!=null&&(t=i[n].threeRenderer),!e&&l!=null&&(e=i[l]),!s&&a!=null&&(s=i[a])}if(t&&e){let r=function(){if(s){let n=0,l=setInterval(()=>{if(n++>5){clearInterval(l);return}s?.call(i)},300)}};console.debug("[gltf-progressive] setup model-viewer");const o=Z.get(t,{engine:"model-viewer"});return Z.addPlugin(new nt),o.enable(),o.addEventListener("changed",()=>{s?.call(i)}),i.addEventListener("model-visibility",n=>{n.detail.visible&&s?.call(i)}),i.addEventListener("load",()=>{r()}),()=>{o.disable()}}return null}class nt{_didWarnAboutMissingUrl=!1;onBeforeUpdateLOD(t,e,s,r){this.tryParseMeshLOD(e,r),this.tryParseTextureLOD(e,r)}getUrl(t){if(!t)return null;let e=t.getAttribute("src");return e||(e=t.src),e||(this._didWarnAboutMissingUrl||console.warn("No url found in modelviewer",t),this._didWarnAboutMissingUrl=!0),e}tryGetCurrentGLTF(t){return t._currentGLTF}tryGetCurrentModelViewer(t){return t.element}tryParseTextureLOD(t,e){if(e[re]==!0)return;e[re]=!0;const s=this.tryGetCurrentGLTF(t),r=this.tryGetCurrentModelViewer(t),o=this.getUrl(r);if(o&&s&&e.material){let n=function(a){if(a[re]==!0)return;a[re]=!0,a.userData&&(a.userData.LOD=-1);const u=Object.keys(a);for(let d=0;d<u.length;d++){const x=u[d],L=a[x];if(L?.isTexture===!0){const _=L.userData?.associations?.textures;if(_==null)continue;const k=s.parser.json.textures[_];if(!k){console.warn("Texture data not found for texture index "+_);continue}if(k?.extensions?.[F]){const D=k.extensions[F];D&&o&&m.registerTexture(o,L,D.lods.length,_,D)}}}};const l=e.material;if(Array.isArray(l))for(const a of l)n(a);else n(l)}}tryParseMeshLOD(t,e){if(e[ve]==!0)return;e[ve]=!0;const s=this.tryGetCurrentModelViewer(t),r=this.getUrl(s);if(!r)return;const o=e.userData?.gltfExtensions?.[F];if(o&&r){const n=e.uuid;m.registerMesh(r,n,e,0,o.lods.length,o)}}}function it(...i){let t,e,s,r;switch(i.length){case 2:[s,e]=i,r={};break;case 3:[s,e,r]=i;break;case 4:[t,e,s,r]=i;break;default:throw new Error("Invalid arguments")}ne(e),xe(s),we(s,{progressive:!0,...r?.hints}),s.register(n=>new m(n));const o=Z.get(e);return r?.enableLODsManager!==!1&&o.enable(),o}Ae();if(!Ee){const i={gltfProgressive:{useNeedleProgressive:it,LODsManager:Z,configureLoader:we,getRaycastMesh:j,useRaycastMeshes:je}};if(!globalThis.Needle)globalThis.Needle=i;else for(const t in i)globalThis.Needle[t]=i[t]}exports.LODsManager=Z;exports.NEEDLE_progressive=m;exports.addDracoAndKTX2Loaders=xe;exports.configureLoader=we;exports.createLoaders=ne;exports.getRaycastMesh=j;exports.setDracoDecoderLocation=Te;exports.setKTX2TranscoderLocation=Se;