@needle-tools/engine/dist/gltf-progressive-C-U_onhf.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 d=require("./three-Dceyffus.umd.cjs"),q=require("./three-examples-Ce6Th3bv.umd.cjs");var ae=typeof document<"u"?document.currentScript:null;const be="3.3.2";globalThis.GLTF_PROGRESSIVE_VERSION=be;console.debug(`[gltf-progressive] version ${be}`);let k="https://www.gstatic.com/draco/versioned/decoders/1.5.7/",N="https://cdn.needle.tools/static/three/0.179.1/basis2/";const Be=k,$e=N,ve=new URL(k+"draco_decoder.js");ve.searchParams.append("range","true");fetch(ve,{method:"GET",headers:{Range:"bytes=0-1"}}).catch(i=>{console.debug(`Failed to fetch remote Draco decoder from ${k} (offline: ${typeof navigator<"u"?navigator.onLine:"unknown"})`),k===Be&&Oe("./include/draco/"),N===$e&&Se("./include/ktx2/")}).finally(()=>{Te()});const Ge=()=>({dracoDecoderPath:k,ktx2TranscoderPath:N});function Oe(i){k=i,A&&A[ge]!=k?(console.debug("Updating Draco decoder path to "+i),A[ge]=k,A.setDecoderPath(k),A.preload()):console.debug("Setting Draco decoder path to "+i)}function Se(i){N=i,R&&R.transcoderPath!=N?(console.debug("Updating KTX2 transcoder path to "+i),R.setTranscoderPath(N),R.init()):console.debug("Setting KTX2 transcoder path to "+i)}function ne(i){return Te(),i?R.detectSupport(i):i!==null&&console.warn("No renderer provided to detect ktx2 support - loading KTX2 textures might fail"),{dracoLoader:A,ktx2Loader:R,meshoptDecoder:se}}function ye(i){i.dracoLoader||i.setDRACOLoader(A),i.ktx2Loader||i.setKTX2Loader(R),i.meshoptDecoder||i.setMeshoptDecoder(se)}const ge=Symbol("dracoDecoderPath");let A,se,R;function Te(){A||(A=new q.DRACOLoader,A[ge]=k,A.setDecoderPath(k),A.setDecoderConfig({type:"js"}),A.preload()),R||(R=new q.KTX2Loader,R.setTranscoderPath(N),R.init()),se||(se=q.MeshoptDecoder)}const pe=new WeakMap;function xe(i,t){let e=pe.get(i);e?e=Object.assign(e,t):e=t,pe.set(i,e)}const Fe=q.GLTFLoader.prototype.load;function Ue(...i){const t=pe.get(this);let e=i[0];const r=new URL(e,window.location.href);if(r.hostname.endsWith("needle.tools")){const s=t?.progressive!==void 0?t.progressive:!0,o=t?.usecase?t.usecase:"default";s?this.requestHeader.Accept=`*/*;progressive=allowed;usecase=${o}`:this.requestHeader.Accept=`*/*;usecase=${o}`,e=r.toString()}return i[0]=e,Fe?.call(this,...i)}q.GLTFLoader.prototype.load=Ue;V("debugprogressive");function V(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 Ee(i,t){if(t===void 0||t.startsWith("./")||t.startsWith("http")||i===void 0)return t;const e=i.lastIndexOf("/");if(e>=0){const r=i.substring(0,e+1);for(;r.endsWith("/")&&t.startsWith("/");)t=t.substring(1);return r+t}return t}let j;function Pe(){return j!==void 0||(j=/iPhone|iPad|iPod|Android|IEMobile/i.test(navigator.userAgent),V("debugprogressive")&&console.log("[glTF Progressive]: isMobileDevice",j)),j}function Le(){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 We{maxConcurrent;_running=new Map;_queue=[];debug=!1;constructor(t=100,e={}){this.maxConcurrent=t,this.debug=e.debug??!1,window.requestAnimationFrame(this.tick)}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 ${this._queue.length} more.`);const{key:r,resolve:n}=this._queue.shift();n({use:s=>this.add(r,s)})}}}const ze=typeof window>"u"&&typeof document>"u",me=Symbol("needle:raycast-mesh");function X(i){return i?.[me]instanceof d.BufferGeometry?i[me]:null}function Ne(i,t){if((i.type==="Mesh"||i.type==="SkinnedMesh")&&!X(i)){const r=qe(t);r.userData={isRaycastMesh:!0},i[me]=r}}function Ve(i=!0){if(i){if(Y)return;const t=Y=d.Mesh.prototype.raycast;d.Mesh.prototype.raycast=function(e,r){const n=this,s=X(n);let o;s&&n.isMesh&&(o=n.geometry,n.geometry=s),t.call(this,e,r),o&&(n.geometry=o)}}else{if(!Y)return;d.Mesh.prototype.raycast=Y,Y=null}}let Y=null;function qe(i){const t=new d.BufferGeometry;for(const e in i.attributes)t.setAttribute(e,i.getAttribute(e));return t.setIndex(i.getIndex()),t}const E=new Array,p=V("debugprogressive");let re,z=-1;if(p){let t=function(){z+=1,z>=i&&(z=-1),console.log(`Toggle LOD level [${z}]`)},i=6;window.addEventListener("keyup",e=>{e.key==="p"&&t(),e.key==="w"&&(re=!re,console.log(`Toggle wireframe [${re}]`));const r=parseInt(e.key);!isNaN(r)&&r>=0&&(z=r,console.log(`Set LOD level to [${z}]`))})}function Ae(i){if(p)if(Array.isArray(i))for(const t of i)Ae(t);else i&&"wireframe"in i&&(i.wireframe=re===!0)}const H=new Array;let Xe=0;const Ke=Pe()?2:10;function je(i){if(H.length<Ke){const r=H.length;p&&console.warn(`[Worker] Creating new worker #${r}`);const n=we.createWorker(i||{});return H.push(n),n}const t=Xe++%H.length;return H[t]}class we{worker;static async createWorker(t){const e=new Worker(new URL("/loader.worker-CiTwpNPW.js",typeof document>"u"?require("url").pathToFileURL(__filename).href:ae&&ae.tagName.toUpperCase()==="SCRIPT"&&ae.src||new URL("gltf-progressive-C-U_onhf.umd.cjs",document.baseURI).href),{type:"module"});return new we(e,t)}_running=[];_webglRenderer=null;async load(t,e){const r=Ge();let n=e?.renderer;n||(this._webglRenderer??=(async()=>{const{WebGLRenderer:u}=await Promise.resolve().then(()=>require("./three-Dceyffus.umd.cjs")).then(c=>c.THREE);return new u})(),n=await this._webglRenderer);const l=ne(n).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:r.dracoDecoderPath,ktx2TranscoderPath:r.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;constructor(t,e){this.worker=t,this._debug=e.debug??!1,t.onmessage=r=>{const n=r.data;switch(this._debug&&console.log("[Worker] EVENT",n),n.type){case"loaded-gltf":for(const s of this._running)if(s.url===n.result.url){Ye(n.result),s.resolve(n.result);const o=s.url;o.startsWith("blob:")&&URL.revokeObjectURL(o)}}},t.onerror=r=>{console.error("[Worker] Error in gltf-progressive worker:",r)},t.postMessage({type:"init"})}}function Ye(i){for(const t of i.geometries){const e=t.geometry,r=new d.BufferGeometry;if(r.name=e.name||"",e.index){const n=e.index;r.setIndex(le(n))}for(const n in e.attributes){const s=e.attributes[n],o=le(s);r.setAttribute(n,o)}if(e.morphAttributes)for(const n in e.morphAttributes){const o=e.morphAttributes[n].map(l=>le(l));r.morphAttributes[n]=o}if(r.morphTargetsRelative=e.morphTargetsRelative??!1,r.boundingBox=new d.Box3,r.boundingBox.min=new d.Vector3(e.boundingBox?.min.x,e.boundingBox?.min.y,e.boundingBox?.min.z),r.boundingBox.max=new d.Vector3(e.boundingBox?.max.x,e.boundingBox?.max.y,e.boundingBox?.max.z),r.boundingSphere=new d.Sphere(new d.Vector3(e.boundingSphere?.center.x,e.boundingSphere?.center.y,e.boundingSphere?.center.z),e.boundingSphere?.radius),e.groups)for(const n of e.groups)r.addGroup(n.start,n.count,n.materialIndex);e.userData&&(r.userData=e.userData),t.geometry=r}for(const t of i.textures){const e=t.texture;let r=null;if(e.isCompressedTexture){const n=e.mipmaps,s=e.image?.width||e.source?.data?.width||-1,o=e.image?.height||e.source?.data?.height||-1;r=new d.CompressedTexture(n,s,o,e.format,e.type,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.anisotropy,e.colorSpace)}else r=new d.Texture(e.image,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.format,e.type,e.anisotropy,e.colorSpace),r.mipmaps=e.mipmaps,r.channel=e.channel,r.source.data=e.source.data,r.flipY=e.flipY,r.premultiplyAlpha=e.premultiplyAlpha,r.unpackAlignment=e.unpackAlignment,r.matrix=new d.Matrix3(...e.matrix.elements);if(!r){console.error("[Worker] Failed to create new texture from received data. Texture is not a CompressedTexture or Texture.");continue}t.texture=r}return i}function le(i){let t=i;if("isInterleavedBufferAttribute"in i&&i.isInterleavedBufferAttribute){const e=i.data,r=e.array,n=new d.InterleavedBuffer(r,e.stride);t=new d.InterleavedBufferAttribute(n,i.itemSize,r.byteOffset,i.normalized),t.offset=i.offset}else"isBufferAttribute"in i&&i.isBufferAttribute&&(t=new d.BufferAttribute(i.array,i.itemSize,i.normalized),t.usage=i.usage,t.gpuType=i.gpuType,t.updateRanges=i.updateRanges);return t}const He=V("gltf-progressive-worker"),Qe=V("gltf-progressive-reduce-mipmaps"),ue=Symbol("needle-progressive-texture"),F="NEEDLE_progressive";class x{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 r=this,n="LODS:minmax",s=t[n];if(s!=null)return s;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[n]=e,e}if(p==="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&&o(u,e)}}else if(t.isMaterial)for(const l of Object.keys(t)){const a=t[l];a?.isTexture===!0&&o(a,e)}else p&&console.warn(`[getMaterialMinMaxLODsCount] Unsupported material type: ${t.type}`);return t[n]=e,e;function o(l,a){const u=r.getAssignedLODInformation(l);if(u){const c=r.lodInfos.get(u.key);if(c&&c.lods){a.min_count=Math.min(a.min_count,c.lods.length),a.max_count=Math.max(a.max_count,c.lods.length);for(let m=0;m<c.lods.length;m++){const _=c.lods[m];_.width&&(a.lods[m]=a.lods[m]||{min_height:1/0,max_height:0},a.lods[m].min_height=Math.min(a.lods[m].min_height,_.height),a.lods[m].max_height=Math.max(a.lods[m].max_height,_.height))}}}}}static hasLODLevelAvailable(t,e){if(Array.isArray(t)){for(const s of t)if(this.hasLODLevelAvailable(s,e))return!0;return!1}if(t.isMaterial===!0){for(const s of Object.keys(t)){const o=t[s];if(o&&o.isTexture&&this.hasLODLevelAvailable(o,e))return!0}return!1}else if(t.isGroup===!0){for(const s of t.children)if(s.isMesh===!0&&this.hasLODLevelAvailable(s,e))return!0}let r,n;if(t.isMesh?r=t.geometry:(t.isBufferGeometry||t.isTexture)&&(r=t),r&&r?.userData?.LODS){const s=r.userData.LODS;if(n=this.lodInfos.get(s.key),e===void 0)return n!=null;if(n)return Array.isArray(n.lods)?e<n.lods.length:e===0}return!1}static assignMeshLOD(t,e){if(!t)return Promise.resolve(null);if(t instanceof d.Mesh||t.isMesh===!0){const r=t.geometry,n=this.getAssignedLODInformation(r);if(!n)return Promise.resolve(null);for(const s of E)s.onBeforeGetLODMesh?.(t,e);return t["LOD:requested level"]=e,x.getOrLoadLOD(r,e).then(s=>{if(Array.isArray(s)){const o=n.index||0;s=s[o]}return t["LOD:requested level"]===e&&(delete t["LOD:requested level"],s&&r!=s&&(s?.isBufferGeometry?t.geometry=s:p&&console.error("Invalid LOD geometry",s))),s}).catch(s=>(console.error("Error loading mesh LOD",t,s),null))}else p&&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 r=t;if(Array.isArray(r.material)){const n=new Array;for(const s of r.material){const o=this.assignTextureLOD(s,e);n.push(o)}return Promise.all(n).then(s=>{const o=new Array;for(const l of s)Array.isArray(l)&&o.push(...l);return o})}else return this.assignTextureLOD(r.material,e)}if(t.isMaterial===!0){const r=t,n=[],s=new Array;if(r.uniforms&&(r.isRawShaderMaterial||r.isShaderMaterial===!0)){const o=r;for(const l of Object.keys(o.uniforms)){const a=o.uniforms[l].value;if(a?.isTexture===!0){const u=this.assignTextureLODForSlot(a,e,r,l).then(c=>(c&&o.uniforms[l].value!=c&&(o.uniforms[l].value=c,o.uniformsNeedUpdate=!0),c));n.push(u),s.push(l)}}}else for(const o of Object.keys(r)){const l=r[o];if(l?.isTexture===!0){const a=this.assignTextureLODForSlot(l,e,r,o);n.push(a),s.push(o)}}return Promise.all(n).then(o=>{const l=new Array;for(let a=0;a<o.length;a++){const u=o[a],c=s[a];u&&u.isTexture===!0?l.push({material:r,slot:c,texture:u,level:e}):l.push({material:r,slot:c,texture:null,level:e})}return l})}if(t instanceof d.Texture||t.isTexture===!0){const r=t;return this.assignTextureLODForSlot(r,e,null,null)}return Promise.resolve(null)}static assignTextureLODForSlot(t,e,r,n){return t?.isTexture!==!0?Promise.resolve(null):n==="glyphMap"?Promise.resolve(t):x.getOrLoadLOD(t,e).then(s=>{if(Array.isArray(s))return console.warn("Progressive: Got an array of textures for a texture slot, this should not happen..."),null;if(s?.isTexture===!0){if(s!=t&&r&&n){const o=r[n];if(o&&!p){const l=this.getAssignedLODInformation(o);if(l&&l?.level<e)return p==="verbose"&&console.warn("Assigned texture level is already higher: ",l.level,e,r,o,s),null}if(Qe&&s.mipmaps){const l=s.mipmaps.length;s.mipmaps.length=Math.min(s.mipmaps.length,3),l!==s.mipmaps.length&&p&&console.debug(`Reduced mipmap count from ${l} to ${s.mipmaps.length} for ${s.uuid}: ${s.image?.width}x${s.image?.height}.`)}r[n]=s}return s}else p=="verbose"&&console.warn("No LOD found for",t,e);return null}).catch(s=>(console.error("Error loading LOD",t,s),null))}parser;url;constructor(t){const e=t.options.path;p&&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(r=>(this._isLoadingMesh=!1,r&&x.registerMesh(this.url,e.guid,r,e.lods?.length,0,e),r))):null};afterRoot(t){return p&&console.log("AFTER",this.url,t),this.parser.json.textures?.forEach((e,r)=>{if(e?.extensions){const n=e?.extensions[F];if(n){if(!n.lods){p&&console.warn("Texture has no LODs",n);return}let s=!1;for(const o of this.parser.associations.keys())o.isTexture===!0&&this.parser.associations.get(o)?.textures===r&&(s=!0,x.registerTexture(this.url,o,n.lods?.length,r,n));s||this.parser.getDependency("texture",r).then(o=>{o&&x.registerTexture(this.url,o,n.lods?.length,r,n)})}}}),this.parser.json.meshes?.forEach((e,r)=>{if(e?.extensions){const n=e?.extensions[F];if(n&&n.lods){for(const s of this.parser.associations.keys())if(s.isMesh){const o=this.parser.associations.get(s);o?.meshes===r&&x.registerMesh(this.url,n.guid,s,n.lods.length,o.primitives,n)}}}}),null}static registerTexture=(t,e,r,n,s)=>{if(!e){p&&console.error("gltf-progressive: Called register texture without texture");return}if(p){const l=e.image?.width||e.source?.data?.width||0,a=e.image?.height||e.source?.data?.height||0;console.log(`> Progressive: register texture[${n}] "${e.name||e.uuid}", Current: ${l}x${a}, Max: ${s.lods[0]?.width}x${s.lods[0]?.height}, uuid: ${e.uuid}`,s,e)}e.source&&(e.source[ue]=s);const o=s.guid;x.assignLODInformation(t,e,o,r,n),x.lodInfos.set(o,s),x.lowresCache.set(o,e)};static registerMesh=(t,e,r,n,s,o)=>{const l=r.geometry;if(!l){p&&console.warn("gltf-progressive: Register mesh without geometry");return}l.userData||(l.userData={}),p&&console.log("> Progressive: register mesh "+r.name,{index:s,uuid:r.uuid},o,r),x.assignLODInformation(t,l,e,n,s),x.lodInfos.set(e,o);let a=x.lowresCache.get(e);a?a.push(r.geometry):a=[r.geometry],x.lowresCache.set(e,a),n>0&&!X(r)&&Ne(r,l);for(const u of E)u.onRegisteredNewMesh?.(r,o)};static lodInfos=new Map;static previouslyLoaded=new Map;static lowresCache=new Map;static workers=[];static _workersIndex=0;static async getOrLoadLOD(t,e){const r=p=="verbose",n=this.getAssignedLODInformation(t);if(!n)return p&&console.warn(`[gltf-progressive] No LOD information found: ${t.name}, uuid: ${t.uuid}, type: ${t.type}`,t),null;const s=n?.key;let o;if(t.isTexture===!0){const a=t;a.source&&a.source[ue]&&(o=a.source[ue])}if(o||(o=x.lodInfos.get(s)),o){if(e>0){let c=!1;const m=Array.isArray(o.lods);if(m&&e>=o.lods.length?c=!0:m||(c=!0),c)return this.lowresCache.get(s)}const a=Array.isArray(o.lods)?o.lods[e]?.path:o.lods;if(!a)return p&&!o["missing:uri"]&&(o["missing:uri"]=!0,console.warn("Missing uri for progressive asset for LOD "+e,o)),null;const u=Ee(n.url,a);if(u.endsWith(".glb")||u.endsWith(".gltf")){if(!o.guid)return console.warn("missing pointer for glb/gltf texture",o),null;const c=u+"_"+o.guid,m=await this.queue.slot(u),_=this.previouslyLoaded.get(c);if(_!==void 0){r&&console.log(`LOD ${e} was already loading/loaded: ${c}`);let f=await _.catch(S=>(console.error(`Error loading LOD ${e} from ${u}
`,S),null)),w=!1;if(f==null||(f instanceof d.Texture&&t instanceof d.Texture?f.image?.data||f.source?.data?f=this.copySettings(t,f):(w=!0,this.previouslyLoaded.delete(c)):f instanceof d.BufferGeometry&&t instanceof d.BufferGeometry&&(f.attributes.position?.array||(w=!0,this.previouslyLoaded.delete(c)))),!w)return f}if(!m.use)return p&&console.log(`LOD ${e} was aborted: ${u}`),null;const M=o,C=new Promise(async(f,w)=>{if(He){const y=await(await je({})).load(u);if(y.textures.length>0)for(const h of y.textures){let g=h.texture;return x.assignLODInformation(n.url,g,s,e,void 0),t instanceof d.Texture&&(g=this.copySettings(t,g)),g&&(g.guid=M.guid),f(g)}if(y.geometries.length>0){const h=new Array;for(const g of y.geometries){const b=g.geometry;x.assignLODInformation(n.url,b,s,e,g.primitiveIndex),h.push(b)}return f(h)}return f(null)}const S=new q.GLTFLoader;ye(S),p&&(await new Promise(L=>setTimeout(L,1e3)),r&&console.warn("Start loading (delayed) "+u,M.guid));let B=u;if(M&&Array.isArray(M.lods)){const L=M.lods[e];L.hash&&(B+="?v="+L.hash)}const D=await S.loadAsync(B).catch(L=>(console.error(`Error loading LOD ${e} from ${u}
`,L),f(null)));if(!D)return f(null);const W=D.parser;r&&console.log("Loading finished "+u,M.guid);let T=0;if(D.parser.json.textures){let L=!1;for(const y of D.parser.json.textures){if(y?.extensions){const h=y?.extensions[F];if(h?.guid&&h.guid===M.guid){L=!0;break}}T++}if(L){let y=await W.getDependency("texture",T);return y&&x.assignLODInformation(n.url,y,s,e,void 0),r&&console.log('change "'+t.name+'" → "'+y.name+'"',u,T,y,c),t instanceof d.Texture&&(y=this.copySettings(t,y)),y&&(y.guid=M.guid),f(y)}else p&&console.warn("Could not find texture with guid",M.guid,D.parser.json)}if(T=0,D.parser.json.meshes){let L=!1;for(const y of D.parser.json.meshes){if(y?.extensions){const h=y?.extensions[F];if(h?.guid&&h.guid===M.guid){L=!0;break}}T++}if(L){const y=await W.getDependency("mesh",T);if(r&&console.log(`Loaded Mesh "${y.name}"`,u,T,y,c),y.isMesh===!0){const h=y.geometry;return x.assignLODInformation(n.url,h,s,e,0),f(h)}else{const h=new Array;for(let g=0;g<y.children.length;g++){const b=y.children[g];if(b.isMesh===!0){const O=b.geometry;x.assignLODInformation(n.url,O,s,e,g),h.push(O)}}return f(h)}}else p&&console.warn("Could not find mesh with guid",M.guid,D.parser.json)}return f(null)});return this.previouslyLoaded.set(c,C),m.use(C),await C}else if(t instanceof d.Texture){r&&console.log("Load texture from uri: "+u);const m=await new d.TextureLoader().loadAsync(u);return m?(m.guid=o.guid,m.flipY=!1,m.needsUpdate=!0,m.colorSpace=t.colorSpace,r&&console.log(o,m)):p&&console.warn("failed loading",u),m}}else p&&console.warn(`Can not load LOD ${e}: no LOD info found for "${s}" ${t.name}`,t.type);return null}static maxConcurrent=50;static queue=new We(x.maxConcurrent,{debug:p!=!1});static assignLODInformation(t,e,r,n,s){if(!e)return;e.userData||(e.userData={});const o=new Je(t,r,n,s);e.userData.LODS=o,"source"in e&&typeof e.source=="object"&&(e.source.LODS=o)}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?(p==="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 Je{url;key;level;index;constructor(t,e,r,n){this.url=t,this.key=e,this.level=r,n!=null&&(this.index=n)}}class de{static addPromise=(t,e,r,n)=>{n.forEach(s=>{s.add(t,e,r)})};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 n=Math.max(e.frames??2,2);this._frame_start=e.waitForFirstCapture?void 0:t,this._frames_to_capture=n,this.ready=new Promise(s=>{this._resolve=s}),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,r){if(this._resolved){p&&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 n=this._seen.get(e);if(n>=this._maxPromisesPerObject){p&&console.warn("PromiseGroup: Already awaiting object ignoring new promise for it.");return}this._seen.set(e,n+1)}else this._seen.set(e,1);this._awaiting.push(r),this._addedCount++,r.finally(()=>{this._resolvedCount++,this._awaiting.splice(this._awaiting.indexOf(r),1)})}}resolveNow(){this._resolved||this._resolve?.({awaited_count:this._addedCount,resolved_count:this._resolvedCount,cancelled:this._signal?.aborted??!1})}}const I=V("debugprogressive"),Ze=V("noprogressive"),ce=Symbol("Needle:LODSManager"),fe=Symbol("Needle:LODState"),U=Symbol("Needle:CurrentLOD"),P={mesh_lod:-1,texture_lod:-1};let Q=class v{static debugDrawLine;static getObjectLODState(t){return t[fe]}static addPlugin(t){E.push(t)}static removePlugin(t){const e=E.indexOf(t);e>=0&&E.splice(e,1)}static get(t,e){if(t[ce])return console.debug("[gltf-progressive] LODsManager already exists for this renderer"),t[ce];const r=new v(t,{engine:"unknown",...e});return t[ce]=r,r}renderer;context;projectionScreenMatrix=new d.Matrix4;get plugins(){return E}overrideLodLevel=void 0;targetTriangleDensity=2e5;skinnedMeshAutoUpdateBoundsInterval=30;updateInterval="auto";#e=1;pause=!1;manual=!1;_newPromiseGroups=[];_promiseGroupIds=0;awaitLoading(t){const e=this._promiseGroupIds++,r=new de(this.#s,{...t});this._newPromiseGroups.push(r);const n=performance.now();return r.ready.finally(()=>{const s=this._newPromiseGroups.indexOf(r);s>=0&&(this._newPromiseGroups.splice(s,1),Le()&&performance.measure("LODsManager:awaitLoading",{start:n,detail:{id:e,name:t?.name,awaited:r.awaitedCount,resolved:r.resolvedCount}}))}),r.ready}_postprocessPromiseGroups(){if(this._newPromiseGroups.length!==0)for(let t=this._newPromiseGroups.length-1;t>=0;t--)this._newPromiseGroups[t].update(this.#s)}_lodchangedlisteners=[];addEventListener(t,e){t==="changed"&&this._lodchangedlisteners.push(e)}removeEventListener(t,e){if(t==="changed"){const r=this._lodchangedlisteners.indexOf(e);r>=0&&this._lodchangedlisteners.splice(r,1)}}constructor(t,e){this.renderer=t,this.context={...e}}#t;#o=new d.Clock;#s=0;#n=0;#i=0;#r=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(r,n){const s=e.renderer.getRenderTarget();(s==null||"isXRRenderTarget"in s&&s.isXRRenderTarget)&&(t=0,e.#s+=1,e.#n=e.#o.getDelta(),e.#i+=e.#n,e._fpsBuffer.shift(),e._fpsBuffer.push(1/e.#n),e.#r=e._fpsBuffer.reduce((l,a)=>l+a)/e._fpsBuffer.length,I&&e.#s%200===0&&console.log("FPS",Math.round(e.#r),"Interval:",e.#e));const o=t++;e.#t.call(this,r,n),e.onAfterRender(r,n,o)}}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,r){if(this.pause)return;const s=this.renderer.renderLists.get(t,0).opaque;let o=!0;if(s.length===1){const l=s[0].material;(l.name==="EffectMaterial"||l.name==="CopyShader")&&(o=!1)}if((e.parent&&e.parent.type==="CubeCamera"||r>=1&&e.type==="OrthographicCamera")&&(o=!1),o){if(Ze||(this.updateInterval==="auto"?this.#r<40&&this.#e<10?(this.#e+=1,I&&console.warn("↓ Reducing LOD updates",this.#e,this.#r.toFixed(0))):this.#r>=60&&this.#e>1&&(this.#e-=1,I&&console.warn("↑ Increasing LOD updates",this.#e,this.#r.toFixed(0))):this.#e=this.updateInterval,this.#e>0&&this.#s%this.#e!=0))return;this.internalUpdate(t,e),this._postprocessPromiseGroups()}}internalUpdate(t,e){const r=this.renderer.renderLists.get(t,0),n=r.opaque;this.projectionScreenMatrix.multiplyMatrices(e.projectionMatrix,e.matrixWorldInverse);const s=this.targetTriangleDensity;for(const a of n){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")){I&&(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(I==="color"&&a.material&&!a.object.progressive_debug_color){a.object.progressive_debug_color=!0;const c=Math.random()*16777215,m=new d.MeshStandardMaterial({color:c});a.object.material=m}const u=a.object;(u instanceof d.Mesh||u.isMesh)&&this.updateLODs(t,e,u,s)}const o=r.transparent;for(const a of o){const u=a.object;(u instanceof d.Mesh||u.isMesh)&&this.updateLODs(t,e,u,s)}const l=r.transmissive;for(const a of l){const u=a.object;(u instanceof d.Mesh||u.isMesh)&&this.updateLODs(t,e,u,s)}}updateLODs(t,e,r,n){r.userData||(r.userData={});let s=r[fe];if(s||(s=new et,r[fe]=s),s.frames++<2)return;for(const l of E)l.onBeforeUpdateLOD?.(this.renderer,t,e,r);const o=this.overrideLodLevel!==void 0?this.overrideLodLevel:z;o>=0?(P.mesh_lod=o,P.texture_lod=o):(this.calculateLodLevel(e,r,s,n,P),P.mesh_lod=Math.round(P.mesh_lod),P.texture_lod=Math.round(P.texture_lod)),P.mesh_lod>=0&&this.loadProgressiveMeshes(r,P.mesh_lod),r.material&&P.texture_lod>=0&&this.loadProgressiveTextures(r.material,P.texture_lod,o),p&&r.material&&!r.isGizmo&&Ae(r.material);for(const l of E)l.onAfterUpdatedLOD?.(this.renderer,t,e,r,P);s.lastLodLevel_Mesh=P.mesh_lod,s.lastLodLevel_Texture=P.texture_lod}loadProgressiveTextures(t,e,r){if(!t)return;if(Array.isArray(t)){for(const s of t)this.loadProgressiveTextures(s,e);return}let n=!1;if((t[U]===void 0||e<t[U])&&(n=!0),r!==void 0&&r>=0&&(n=t[U]!=r,e=r),n){t[U]=e;const s=x.assignTextureLOD(t,e).then(o=>{this._lodchangedlisteners.forEach(l=>l({type:"texture",level:e,object:t}))});de.addPromise("texture",t,s,this._newPromiseGroups)}}loadProgressiveMeshes(t,e){if(!t)return Promise.resolve(null);let r=t[U]!==e;const n=t["DEBUG:LOD"];if(n!=null&&(r=t[U]!=n,e=n),r){t[U]=e;const s=t.geometry,o=x.assignMeshLOD(t,e).then(l=>(l&&t[U]==e&&s!=t.geometry&&this._lodchangedlisteners.forEach(a=>a({type:"mesh",level:e,object:t})),l));return de.addPromise("mesh",t,o,this._newPromiseGroups),o}return Promise.resolve(null)}_sphere=new d.Sphere;_tempBox=new d.Box3;_tempBox2=new d.Box3;tempMatrix=new d.Matrix4;_tempWorldPosition=new d.Vector3;_tempBoxSize=new d.Vector3;_tempBox2Size=new d.Vector3;static corner0=new d.Vector3;static corner1=new d.Vector3;static corner2=new d.Vector3;static corner3=new d.Vector3;static _tempPtInside=new d.Vector3;static isInside(t,e){const r=t.min,n=t.max,s=(r.x+n.x)*.5,o=(r.y+n.y)*.5;return this._tempPtInside.set(s,o,r.z).applyMatrix4(e).z<0}static skinnedMeshBoundsFrameOffsetCounter=0;static $skinnedMeshBoundsOffset=Symbol("gltf-progressive-skinnedMeshBoundsOffset");calculateLodLevel(t,e,r,n,s){if(!e){s.mesh_lod=-1,s.texture_lod=-1;return}if(!t){s.mesh_lod=-1,s.texture_lod=-1;return}let l=10+1,a=!1;if(I&&e["DEBUG:LOD"]!=null)return e["DEBUG:LOD"];const u=x.getMeshLODExtension(e.geometry)?.lods,c=x.getPrimitiveIndex(e.geometry),m=u&&u.length>0,_=x.getMaterialMinMaxLODsCount(e.material),M=_.min_count!==1/0&&_.min_count>=0&&_.max_count>=0;if(!m&&!M){s.mesh_lod=0,s.texture_lod=0;return}m||(a=!0,l=0);const C=this.renderer.domElement.clientHeight||this.renderer.domElement.height;let G=e.geometry.boundingBox;if(e.type==="SkinnedMesh"){const f=e;if(!f.boundingBox)f.computeBoundingBox();else if(this.skinnedMeshAutoUpdateBoundsInterval>0){if(!f[v.$skinnedMeshBoundsOffset]){const S=v.skinnedMeshBoundsFrameOffsetCounter++;f[v.$skinnedMeshBoundsOffset]=S}const w=f[v.$skinnedMeshBoundsOffset];if((r.frames+w)%this.skinnedMeshAutoUpdateBoundsInterval===0){const S=X(f),B=f.geometry;S&&(f.geometry=S),f.computeBoundingBox(),f.geometry=B}}G=f.boundingBox}if(G){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 h=t.getWorldPosition(this._tempWorldPosition);if(this._sphere.containsPoint(h)){s.mesh_lod=0,s.texture_lod=0;return}}if(this._tempBox.copy(G),this._tempBox.applyMatrix4(e.matrixWorld),f.isPerspectiveCamera&&v.isInside(this._tempBox,this.projectionScreenMatrix)){s.mesh_lod=0,s.texture_lod=0;return}if(this._tempBox.applyMatrix4(this.projectionScreenMatrix),this.renderer.xr.enabled&&f.isPerspectiveCamera&&f.fov>70){const h=this._tempBox.min,g=this._tempBox.max;let b=h.x,O=h.y,$=g.x,K=g.y;const J=2,oe=1.5,Z=(h.x+g.x)*.5,ee=(h.y+g.y)*.5;b=(b-Z)*J+Z,O=(O-ee)*J+ee,$=($-Z)*J+Z,K=(K-ee)*J+ee;const ke=b<0&&$>0?0:Math.min(Math.abs(h.x),Math.abs(g.x)),Re=O<0&&K>0?0:Math.min(Math.abs(h.y),Math.abs(g.y)),ie=Math.max(ke,Re);r.lastCentrality=(oe-ie)*(oe-ie)*(oe-ie)}else r.lastCentrality=1;const w=this._tempBox.getSize(this._tempBoxSize);w.multiplyScalar(.5),screen.availHeight>0&&C>0&&w.multiplyScalar(C/screen.availHeight),t.isPerspectiveCamera?w.x*=t.aspect:t.isOrthographicCamera;const S=t.matrixWorldInverse,B=this._tempBox2;B.copy(G),B.applyMatrix4(e.matrixWorld),B.applyMatrix4(S);const D=B.getSize(this._tempBox2Size),W=Math.max(D.x,D.y);if(Math.max(w.x,w.y)!=0&&W!=0&&(w.z=D.z/Math.max(D.x,D.y)*Math.max(w.x,w.y)),r.lastScreenCoverage=Math.max(w.x,w.y,w.z),r.lastScreenspaceVolume.copy(w),r.lastScreenCoverage*=r.lastCentrality,I&&v.debugDrawLine){const h=this.tempMatrix.copy(this.projectionScreenMatrix);h.invert();const g=v.corner0,b=v.corner1,O=v.corner2,$=v.corner3;g.copy(this._tempBox.min),b.copy(this._tempBox.max),b.x=g.x,O.copy(this._tempBox.max),O.y=g.y,$.copy(this._tempBox.max);const K=(g.z+$.z)*.5;g.z=b.z=O.z=$.z=K,g.applyMatrix4(h),b.applyMatrix4(h),O.applyMatrix4(h),$.applyMatrix4(h),v.debugDrawLine(g,b,255),v.debugDrawLine(g,O,255),v.debugDrawLine(b,$,255),v.debugDrawLine(O,$,255)}let L=999;if(u&&r.lastScreenCoverage>0)for(let h=0;h<u.length;h++){const g=u[h],O=(g.densities?.[c]||g.density||1e-5)/r.lastScreenCoverage;if(c>0&&Le()&&!g.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.")),O<n){L=h;break}}L<l&&(l=L,a=!0)}if(a?s.mesh_lod=l:s.mesh_lod=r.lastLodLevel_Mesh,I&&s.mesh_lod!=r.lastLodLevel_Mesh){const w=u?.[s.mesh_lod];w&&console.debug(`Mesh LOD changed: ${r.lastLodLevel_Mesh} → ${s.mesh_lod} (density: ${w.densities?.[c].toFixed(0)}) | ${e.name}`)}if(M){const f="saveData"in globalThis.navigator&&globalThis.navigator.saveData===!0;if(r.lastLodLevel_Texture<0){if(s.texture_lod=_.max_count-1,I){const w=_.lods[_.max_count-1];I&&console.log(`First Texture LOD ${s.texture_lod} (${w.max_height}px) - ${e.name}`)}}else{const w=r.lastScreenspaceVolume.x+r.lastScreenspaceVolume.y+r.lastScreenspaceVolume.z;let S=r.lastScreenCoverage*4;this.context?.engine==="model-viewer"&&(S*=1.5);const D=C/window.devicePixelRatio*S;let W=!1;for(let T=_.lods.length-1;T>=0;T--){const L=_.lods[T];if(!(f&&L.max_height>=2048)&&!(Pe()&&L.max_height>4096)&&(L.max_height>D||!W&&T===0)){if(W=!0,s.texture_lod=T,I&&s.texture_lod<r.lastLodLevel_Texture){const y=L.max_height;console.log(`Texture LOD changed: ${r.lastLodLevel_Texture} → ${s.texture_lod} = ${y}px 
Screensize: ${D.toFixed(0)}px, Coverage: ${(100*r.lastScreenCoverage).toFixed(2)}%, Volume ${w.toFixed(1)} 
${e.name}`)}break}}}}else s.texture_lod=0}};class et{frames=0;lastLodLevel_Mesh=-1;lastLodLevel_Texture=-1;lastScreenCoverage=0;lastScreenspaceVolume=new d.Vector3;lastCentrality=0}const _e=Symbol("NEEDLE_mesh_lod"),te=Symbol("NEEDLE_texture_lod");let he=null;function Ce(){const i=tt();i&&(i.mapURLs(function(t){return Me(),t}),Me(),he?.disconnect(),he=new MutationObserver(t=>{t.forEach(e=>{e.addedNodes.forEach(r=>{r instanceof HTMLElement&&r.tagName.toLowerCase()==="model-viewer"&&Ie(r)})})}),he.observe(document,{childList:!0,subtree:!0}))}function tt(){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"),Ce()}),null)}function Me(){if(typeof document>"u")return;document.querySelectorAll("model-viewer").forEach(t=>{Ie(t)})}const De=new WeakSet;let rt=0;function Ie(i){if(!i||De.has(i))return null;De.add(i),console.debug("[gltf-progressive] found new model-viewer..."+ ++rt+`
`,i.getAttribute("src"));let t=null,e=null,r=null;for(let n=i;n!=null;n=Object.getPrototypeOf(n)){const s=Object.getOwnPropertySymbols(n),o=s.find(u=>u.toString()=="Symbol(renderer)"),l=s.find(u=>u.toString()=="Symbol(scene)"),a=s.find(u=>u.toString()=="Symbol(needsRender)");!t&&o!=null&&(t=i[o].threeRenderer),!e&&l!=null&&(e=i[l]),!r&&a!=null&&(r=i[a])}if(t&&e){let s=function(){if(r){let o=0,l=setInterval(()=>{if(o++>5){clearInterval(l);return}r?.call(i)},300)}};console.debug("[gltf-progressive] setup model-viewer");const n=Q.get(t,{engine:"model-viewer"});return Q.addPlugin(new st),n.enable(),n.addEventListener("changed",()=>{r?.call(i)}),i.addEventListener("model-visibility",o=>{o.detail.visible&&r?.call(i)}),i.addEventListener("load",()=>{s()}),()=>{n.disable()}}return null}class st{_didWarnAboutMissingUrl=!1;onBeforeUpdateLOD(t,e,r,n){this.tryParseMeshLOD(e,n),this.tryParseTextureLOD(e,n)}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[te]==!0)return;e[te]=!0;const r=this.tryGetCurrentGLTF(t),n=this.tryGetCurrentModelViewer(t),s=this.getUrl(n);if(s&&r&&e.material){let l=function(a){if(a[te]==!0)return;a[te]=!0,a.userData&&(a.userData.LOD=-1);const u=Object.keys(a);for(let c=0;c<u.length;c++){const m=u[c],_=a[m];if(_?.isTexture===!0){const M=_.userData?.associations?.textures;if(M==null)continue;const C=r.parser.json.textures[M];if(!C){console.warn("Texture data not found for texture index "+M);continue}if(C?.extensions?.[F]){const G=C.extensions[F];G&&s&&x.registerTexture(s,_,G.lods.length,M,G)}}}};const o=e.material;if(Array.isArray(o))for(const a of o)l(a);else l(o)}}tryParseMeshLOD(t,e){if(e[_e]==!0)return;e[_e]=!0;const r=this.tryGetCurrentModelViewer(t),n=this.getUrl(r);if(!n)return;const s=e.userData?.gltfExtensions?.[F];if(s&&n){const o=e.uuid;x.registerMesh(n,o,e,0,s.lods.length,s)}}}function nt(...i){let t,e,r,n;switch(i.length){case 2:[r,e]=i,n={};break;case 3:[r,e,n]=i;break;case 4:[t,e,r,n]=i;break;default:throw new Error("Invalid arguments")}ne(e),ye(r),xe(r,{progressive:!0,...n?.hints}),r.register(o=>new x(o));const s=Q.get(e);return n?.enableLODsManager!==!1&&s.enable(),s}Ce();if(!ze){const i={gltfProgressive:{useNeedleProgressive:nt,LODsManager:Q,configureLoader:xe,getRaycastMesh:X,useRaycastMeshes:Ve}};if(!globalThis.Needle)globalThis.Needle=i;else for(const t in i)globalThis.Needle[t]=i[t]}exports.LODsManager=Q;exports.NEEDLE_progressive=x;exports.addDracoAndKTX2Loaders=ye;exports.configureLoader=xe;exports.createLoaders=ne;exports.getRaycastMesh=X;exports.setDracoDecoderLocation=Oe;exports.setKTX2TranscoderLocation=Se;