@needle-tools/engine/dist/gltf-progressive-9tlS5iCx.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 f=require("./three.umd.cjs"),Y=require("./three-examples.umd.cjs");var ce=typeof document<"u"?document.currentScript:null;const Fe="";globalThis.GLTF_PROGRESSIVE_VERSION=Fe;console.debug("[gltf-progressive] version -");let I="https://www.gstatic.com/draco/versioned/decoders/1.5.7/",X="https://cdn.needle.tools/static/three/0.179.1/basis2/";const ze=I,Ve=X,Ce=new URL(I+"draco_decoder.js");Ce.searchParams.append("range","true");fetch(Ce,{method:"GET",headers:{Range:"bytes=0-1"}}).catch(o=>{console.debug(`Failed to fetch remote Draco decoder from ${I} (offline: ${typeof navigator<"u"?navigator.onLine:"unknown"})`),I===ze&&Pe("./include/draco/"),X===Ve&&ke("./include/ktx2/")}).finally(()=>{Re()});const Ee=()=>({dracoDecoderPath:I,ktx2TranscoderPath:X});function Pe(o){I=o,k&&k[ye]!=I?(console.debug("Updating Draco decoder path to "+o),k[ye]=I,k.setDecoderPath(I),k.preload()):console.debug("Setting Draco decoder path to "+o)}function ke(o){X=o,$&&$.transcoderPath!=X?(console.debug("Updating KTX2 transcoder path to "+o),$.setTranscoderPath(X),$.init()):console.debug("Setting KTX2 transcoder path to "+o)}function le(o){return Re(),o?$.detectSupport(o):o!==null&&console.warn("No renderer provided to detect ktx2 support - loading KTX2 textures might fail"),{dracoLoader:k,ktx2Loader:$,meshoptDecoder:ae}}function Le(o){o.dracoLoader||o.setDRACOLoader(k),o.ktx2Loader||o.setKTX2Loader($),o.meshoptDecoder||o.setMeshoptDecoder(ae)}const ye=Symbol("dracoDecoderPath");let k,ae,$;function Re(){k||(k=new Y.DRACOLoader,k[ye]=I,k.setDecoderPath(I),k.setDecoderConfig({type:"js"}),k.preload()),$||($=new Y.KTX2Loader,$.setTranscoderPath(X),$.init()),ae||(ae=Y.MeshoptDecoder)}const xe=new WeakMap;function Me(o,t){let e=xe.get(o);e?e=Object.assign(e,t):e=t,xe.set(o,e)}const Ne=Y.GLTFLoader.prototype.load;function Xe(...o){const t=xe.get(this);let e=o[0];const s=new URL(e,window.location.href);if(s.hostname.endsWith("needle.tools")){const n=t?.progressive!==void 0?t.progressive:!0,i=t?.usecase?t.usecase:"default";n?this.requestHeader.Accept=`*/*;progressive=allowed;usecase=${i}`:this.requestHeader.Accept=`*/*;usecase=${i}`,e=s.toString()}return o[0]=e,Ne?.call(this,...o)}Y.GLTFLoader.prototype.load=Xe;z("debugprogressive");function z(o){if(typeof window>"u")return!1;const e=new URL(window.location.href).searchParams.get(o);return e==null||e==="0"||e==="false"?!1:e===""?!0:e}function Ke(o,t){if(t===void 0||o===void 0||t.startsWith("./")||t.startsWith("http")||t.startsWith("data:")||t.startsWith("blob:"))return t;const e=o.lastIndexOf("/");if(e>=0){const s=o.substring(0,e+1);for(;s.endsWith("/")&&t.startsWith("/");)t=t.substring(1);return s+t}return t}function ve(){return J!==void 0||(J=/iPhone|iPad|iPod|Android|IEMobile/i.test(navigator.userAgent),z("debugprogressive")&&console.log("[glTF Progressive]: isMobileDevice",J)),J}let J;function Ae(){if(typeof window>"u")return!1;const o=new URL(window.location.href),t=o.hostname==="localhost"||/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(o.hostname);return o.hostname==="127.0.0.1"||t}class je{constructor(t,e={}){this.maxConcurrent=t,this.debug=e.debug??!1,typeof window<"u"&&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 ${this._queue.length} more.`);const{key:s,resolve:r}=this._queue.shift();r({use:n=>this.add(s,n)})}}}function He(o){const t=o.image?.width??0,e=o.image?.height??0,s=o.image?.depth??1,r=Math.floor(Math.log2(Math.max(t,e,s)))+1,n=Ye(o);return t*e*s*n*(1-Math.pow(.25,r))/(1-.25)}function Ye(o){let t=4;const e=o.format;e===1024||e===1025?t=1:e===1026||e===1027?t=2:e===1022||e===1029?t=3:(e===1023||e===1033)&&(t=4);let s=1;const r=o.type;return r===1009||r===1010?s=1:r===1011||r===1012?s=2:r===1013||r===1014||r===1015?s=4:r===1016&&(s=2),t*s}const Qe=typeof window>"u"&&typeof document>"u",we=Symbol("needle:raycast-mesh");function Q(o){return o?.[we]instanceof f.BufferGeometry?o[we]:null}function Je(o,t){if((o.type==="Mesh"||o.type==="SkinnedMesh")&&!Q(o)){const s=et(t);s.userData={isRaycastMesh:!0},o[we]=s}}function Ze(o=!0){if(o){if(Z)return;const t=Z=f.Mesh.prototype.raycast;f.Mesh.prototype.raycast=function(e,s){const r=this,n=Q(r);let i;n&&r.isMesh&&(i=r.geometry,r.geometry=n),t.call(this,e,s),i&&(r.geometry=i)}}else{if(!Z)return;f.Mesh.prototype.raycast=Z,Z=null}}let Z=null;function et(o){const t=new f.BufferGeometry;for(const e in o.attributes)t.setAttribute(e,o.getAttribute(e));return t.setIndex(o.getIndex()),t}const q=new Array,g=z("debugprogressive");let se,E=-1;if(g){let o=function(){E+=1,E>=t&&(E=-1),console.log(`Toggle LOD level [${E}]`)};const t=6;window.addEventListener("keyup",e=>{e.key==="p"&&o(),e.key==="w"&&(se=!se,console.log(`Toggle wireframe [${se}]`));const s=parseInt(e.key);!isNaN(s)&&s>=0&&(E=s,console.log(`Set LOD level to [${E}]`))})}function Ie(o){if(g&&se!==void 0)if(Array.isArray(o))for(const t of o)Ie(t);else o&&"wireframe"in o&&(o.wireframe=se===!0)}const ee=new Array;let tt=0;const st=ve()?2:10;function rt(o){if(ee.length<st){const s=ee.length;g&&console.warn(`[Worker] Creating new worker #${s}`);const r=De.createWorker(o||{});return ee.push(r),r}const t=tt++%ee.length;return ee[t]}class De{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 n of this._running)if(n.url===r.result.url){nt(r.result),n.resolve(r.result);const i=n.url;i.startsWith("blob:")&&URL.revokeObjectURL(i)}}},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("/gltf-progressive.worker-BqODMeeW.js",typeof document>"u"?require("url").pathToFileURL(__filename).href:ce&&ce.tagName.toUpperCase()==="SCRIPT"&&ce.src||new URL("gltf-progressive-9tlS5iCx.umd.cjs",document.baseURI).href),{type:"module"});return new De(e,t)}_running=[];_webglRenderer=null;async load(t,e){const s=Ee();let r=e?.renderer;r||(this._webglRenderer??=(async()=>{const{WebGLRenderer:u}=await Promise.resolve().then(()=>require("./three.umd.cjs")).then(c=>c.THREE);return new u})(),r=await this._webglRenderer);const a=le(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 l={type:"load",url:t,dracoDecoderPath:s.dracoDecoderPath,ktx2TranscoderPath:s.ktx2TranscoderPath,ktx2LoaderConfig:a};return this._debug&&console.debug("[Worker] Sending load request",l),this.worker.postMessage(l),new Promise(u=>{this._running.push({url:t.toString(),resolve:u})})}_debug=!1}function nt(o){for(const t of o.geometries){const e=t.geometry,s=new f.BufferGeometry;if(s.name=e.name||"",e.index){const r=e.index;s.setIndex(de(r))}for(const r in e.attributes){const n=e.attributes[r],i=de(n);s.setAttribute(r,i)}if(e.morphAttributes)for(const r in e.morphAttributes){const i=e.morphAttributes[r].map(a=>de(a));s.morphAttributes[r]=i}if(s.morphTargetsRelative=e.morphTargetsRelative??!1,s.boundingBox=new f.Box3,s.boundingBox.min=new f.Vector3(e.boundingBox?.min.x,e.boundingBox?.min.y,e.boundingBox?.min.z),s.boundingBox.max=new f.Vector3(e.boundingBox?.max.x,e.boundingBox?.max.y,e.boundingBox?.max.z),s.boundingSphere=new f.Sphere(new f.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 o.textures){const e=t.texture;let s=null;if(e.isCompressedTexture){const r=e.mipmaps,n=e.image?.width||e.source?.data?.width||-1,i=e.image?.height||e.source?.data?.height||-1;s=new f.CompressedTexture(r,n,i,e.format,e.type,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.anisotropy,e.colorSpace)}else s=new f.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 f.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 o}function de(o){let t=o;if("isInterleavedBufferAttribute"in o&&o.isInterleavedBufferAttribute){const e=o.data,s=e.array,r=new f.InterleavedBuffer(s,e.stride);t=new f.InterleavedBufferAttribute(r,o.itemSize,s.byteOffset,o.normalized),t.offset=o.offset}else"isBufferAttribute"in o&&o.isBufferAttribute&&(t=new f.BufferAttribute(o.array,o.itemSize,o.normalized),t.usage=o.usage,t.gpuType=o.gpuType,t.updateRanges=o.updateRanges);return t}const ot=z("gltf-progressive-worker");z("gltf-progressive-reduce-mipmaps");const te=z("gltf-progressive-gc"),fe=Symbol("needle-progressive-texture"),W="NEEDLE_progressive";class p{get name(){return W}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",n=t[r];if(n!=null)return n;if(e||(e={min_count:1/0,max_count:0,lods:[]}),Array.isArray(t)){for(const a of t)this.getMaterialMinMaxLODsCount(a,e);return t[r]=e,e}if(g==="verbose"&&console.log("getMaterialMinMaxLODsCount",t),t.type==="ShaderMaterial"||t.type==="RawShaderMaterial"){const a=t;for(const l of Object.keys(a.uniforms)){const u=a.uniforms[l].value;u?.isTexture===!0&&i(u,e)}}else if(t.isMaterial)for(const a of Object.keys(t)){const l=t[a];l?.isTexture===!0&&i(l,e)}else g&&console.warn(`[getMaterialMinMaxLODsCount] Unsupported material type: ${t.type}`);return t[r]=e,e;function i(a,l){const u=s.getAssignedLODInformation(a);if(u){const c=s.lodInfos.get(u.key);if(c&&c.lods){l.min_count=Math.min(l.min_count,c.lods.length),l.max_count=Math.max(l.max_count,c.lods.length);for(let d=0;d<c.lods.length;d++){const h=c.lods[d];h.width&&(l.lods[d]=l.lods[d]||{min_height:1/0,max_height:0},l.lods[d].min_height=Math.min(l.lods[d].min_height,h.height),l.lods[d].max_height=Math.max(l.lods[d].max_height,h.height))}}}}}static hasLODLevelAvailable(t,e){if(Array.isArray(t)){for(const n of t)if(this.hasLODLevelAvailable(n,e))return!0;return!1}if(t.isMaterial===!0){for(const n of Object.keys(t)){const i=t[n];if(i&&i.isTexture&&this.hasLODLevelAvailable(i,e))return!0}return!1}else if(t.isGroup===!0){for(const n of t.children)if(n.isMesh===!0&&this.hasLODLevelAvailable(n,e))return!0}let s,r;if(t.isMesh?s=t.geometry:(t.isBufferGeometry||t.isTexture)&&(s=t),s&&s?.userData?.LODS){const n=s.userData.LODS;if(r=this.lodInfos.get(n.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,s){if(!t)return Promise.resolve(null);if(t instanceof f.Mesh||t.isMesh===!0){const r=t.geometry,n=this.getAssignedLODInformation(r);if(!n)return Promise.resolve(null);for(const a of q)a.onBeforeGetLODMesh?.(t,e);t["LOD:requested level"]=e;const i=()=>t["LOD:requested level"]===e||this.shouldApplyStaleMeshLOD(t,e);return p.getOrLoadLOD(r,e,{isCurrent:i}).then(a=>{if(Array.isArray(a)){const u=n.index||0;a=a[u]}const l=t["LOD:requested level"]===e;return(l||this.shouldApplyStaleMeshLOD(t,e))&&(l&&delete t["LOD:requested level"],a&&r!=a&&(a?.isBufferGeometry?typeof s?.apply=="function"?s.apply(a,e,t):s?.apply!==!1&&(t.geometry=a):g&&console.error("Invalid LOD geometry",a))),a}).catch(a=>(console.error("Error loading mesh LOD",t,a),null))}else g&&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,s){if(!t)return Promise.resolve(null);const r=s?.force===!0;if(t.isMesh===!0){const n=t;if(Array.isArray(n.material)){const i=new Array;for(const a of n.material){const l=this.assignTextureLOD(a,e,s);i.push(l)}return Promise.all(i).then(a=>{const l=new Array;for(const u of a)Array.isArray(u)&&l.push(...u);return l})}else return this.assignTextureLOD(n.material,e,s)}if(t.isMaterial===!0){const n=t,i=[],a=new Array;if(this.trackCurrentMaterialTextureSlots(n),n.uniforms&&(n.isRawShaderMaterial||n.isShaderMaterial===!0)){const l=n;for(const u of Object.keys(l.uniforms)){const c=l.uniforms[u].value;if(c?.isTexture===!0){const d=this.assignTextureLODForSlot(c,e,n,u,r).then(h=>(h&&l.uniforms[u].value!=h&&(l.uniforms[u].value=h,l.uniformsNeedUpdate=!0),h));i.push(d),a.push(u)}}}else for(const l of Object.keys(n)){const u=n[l];if(u?.isTexture===!0){const c=this.assignTextureLODForSlot(u,e,n,l,r);i.push(c),a.push(l)}}return Promise.all(i).then(l=>{const u=new Array;for(let c=0;c<l.length;c++){const d=l[c],h=a[c];d&&d.isTexture===!0?u.push({material:n,slot:h,texture:d,level:e}):u.push({material:n,slot:h,texture:null,level:e})}return u})}if(t instanceof f.Texture||t.isTexture===!0){const n=t;return this.assignTextureLODForSlot(n,e,null,null,r)}return Promise.resolve(null)}static set maxConcurrentLoadingTasks(t){p.queue.maxConcurrent=t}static get maxConcurrentLoadingTasks(){return p.queue.maxConcurrent}static assignTextureLODForSlot(t,e,s,r,n){if(t?.isTexture!==!0)return Promise.resolve(null);if(r==="glyphMap")return Promise.resolve(t);const i=this.getAssignedLODInformation(t);if(i&&(i.level===e||!n&&i.level<e))return Promise.resolve(t);if(s&&r){const d=this.getPendingTextureSlotRequest(s,r);if(d&&d.level===e&&d.force===n)return d.promise}const a=s&&r?this.nextTextureSlotRequestId(s,r,e,n):0,l=()=>!s||!r||this.getLatestTextureSlotRequest(s,r)?.id===a,u=()=>l()||this.shouldApplyStaleTextureSlotLOD(s,r,e,n),c=p.getOrLoadLOD(t,e,{isCurrent:u}).then(d=>{if(!l()&&!this.shouldApplyStaleTextureSlotLOD(s,r,e,n))return null;if(Array.isArray(d))return console.warn("Progressive: Got an array of textures for a texture slot, this should not happen..."),null;if(d?.isTexture===!0){if(d!=t&&s&&r){const h=this.getMaterialTextureSlot(s,r)??t;if(h&&!n){const m=this.getAssignedLODInformation(h);if(m&&m?.level<e)return g==="verbose"&&console.warn("Assigned texture level is already higher: ",m.level,e,s,h,d),null}this.assignTrackedTextureSlot(s,r,d)}return d}else g=="verbose"&&console.warn("No LOD found for",t,e);return null}).catch(d=>(console.error("Error loading LOD",t,d),null));return s&&r&&this.setPendingTextureSlotRequest(s,r,e,n,a,c),c}static trackedTextureSlots=new WeakMap;static pendingTextureSlotRequests=new WeakMap;static latestTextureSlotRequests=new WeakMap;static textureSlotRequestId=0;static trackCurrentMaterialTextureSlots(t){if(t.uniforms&&(t.isRawShaderMaterial||t.isShaderMaterial===!0)){const e=t;for(const s of Object.keys(e.uniforms)){const r=e.uniforms[s].value;r?.isTexture===!0&&this.ensureTrackedTextureSlot(t,s,r)}return}for(const e of Object.keys(t)){const s=t[e];s?.isTexture===!0&&this.ensureTrackedTextureSlot(t,e,s)}}static getPendingTextureSlotRequest(t,e){return this.pendingTextureSlotRequests.get(t)?.get(e)}static nextTextureSlotRequestId(t,e,s,r){let n=this.latestTextureSlotRequests.get(t);n||(n=new Map,this.latestTextureSlotRequests.set(t,n));const i=++this.textureSlotRequestId;return n.set(e,{id:i,level:s,force:r}),i}static getLatestTextureSlotRequest(t,e){return this.latestTextureSlotRequests.get(t)?.get(e)}static shouldApplyStaleTextureSlotLOD(t,e,s,r){if(!t||!e)return!1;const n=this.getLatestTextureSlotRequest(t,e),i=this.getMaterialTextureSlot(t,e),a=this.getAssignedLODInformation(i)?.level??1/0;return s>=a?!1:r?n?s>=n.level:!1:!0}static shouldApplyStaleMeshLOD(t,e){const s=t["LOD:requested level"];if(typeof s!="number")return!1;const r=this.getAssignedLODInformation(t.geometry)?.level??1/0;return e<r&&e>=s}static setPendingTextureSlotRequest(t,e,s,r,n,i){let a=this.pendingTextureSlotRequests.get(t);a||(a=new Map,this.pendingTextureSlotRequests.set(t,a));const l={level:s,force:r,id:n,promise:i};a.set(e,l),i.finally(()=>{a.get(e)?.id===n&&a.delete(e)})}static getMaterialTextureSlot(t,e){const r=t.uniforms?.[e];if(r?.value?.isTexture===!0)return r.value;const n=t[e];return n?.isTexture===!0?n:null}static setMaterialTextureSlot(t,e,s){const n=t.uniforms?.[e];if(n?.value?.isTexture===!0){n.value=s,t.uniformsNeedUpdate=!0;return}t[e]=s}static assignTrackedTextureSlot(t,e,s){let r=this.trackedTextureSlots.get(t);r||(r=new Map,this.trackedTextureSlots.set(t,r));const n=this.getMaterialTextureSlot(t,e);let i=r.get(e);!i&&n?i=this.ensureTrackedTextureSlot(t,e,n):i&&n&&i!==n&&(this.releaseTrackedTextureSlot(t,e,i),i=this.ensureTrackedTextureSlot(t,e,n)),!(i===s&&n===s)&&(i&&i!==s&&this.releaseTrackedTextureSlot(t,e,i),i!==s&&(this.trackTextureUsage(s),r.set(e,s)),n!==s&&this.setMaterialTextureSlot(t,e,s))}static ensureTrackedTextureSlot(t,e,s){let r=this.trackedTextureSlots.get(t);r||(r=new Map,this.trackedTextureSlots.set(t,r));const n=r.get(e);return n===s?n:(n&&this.releaseTrackedTextureSlot(t,e,n),this.trackTextureUsage(s),r.set(e,s),s)}static releaseTrackedTextureSlot(t,e,s){const r=this.trackedTextureSlots.get(t);if(r?.get(e)===s&&r.delete(e),this.untrackTextureUsage(s)&&(g||te)){const i=this.getAssignedLODInformation(s);console.log(`[gltf-progressive] Disposed old texture LOD ${i?.level??"?"} for ${t.name||t.type}.${e}`,s.uuid)}}parser;url;constructor(t){const e=t.options.path;g&&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?.[W];return e?(this._isLoadingMesh=!0,this.parser.getDependency("mesh",t).then(s=>(this._isLoadingMesh=!1,s&&p.registerMesh(this.url,e.guid,s,e.lods?.length,0,e),s))):null};afterRoot(t){return g&&console.log("AFTER",this.url,t),this.parser.json.textures?.forEach((e,s)=>{if(e?.extensions){const r=e?.extensions[W];if(r){if(!r.lods){g&&console.warn("Texture has no LODs",r);return}let n=!1;for(const i of this.parser.associations.keys())i.isTexture===!0&&this.parser.associations.get(i)?.textures===s&&(n=!0,p.registerTexture(this.url,i,r.lods?.length,s,r));n||this.parser.getDependency("texture",s).then(i=>{i&&p.registerTexture(this.url,i,r.lods?.length,s,r)})}}}),this.parser.json.meshes?.forEach((e,s)=>{if(e?.extensions){const r=e?.extensions[W];if(r&&r.lods){for(const n of this.parser.associations.keys())if(n.isMesh){const i=this.parser.associations.get(n);i?.meshes===s&&p.registerMesh(this.url,r.guid,n,r.lods.length,i.primitives,r)}}}}),null}static registerTexture=(t,e,s,r,n)=>{if(!e){g&&console.error("!! gltf-progressive: Called register texture without texture");return}if(g){const a=e.image?.width||e.source?.data?.width||0,l=e.image?.height||e.source?.data?.height||0;console.log(`> gltf-progressive: register texture[${r}] "${e.name||e.uuid}", Current: ${a}x${l}, Max: ${n.lods[0]?.width}x${n.lods[0]?.height}, uuid: ${e.uuid}`,n,e)}e.source&&(e.source[fe]=n);const i=n.guid;p.assignLODInformation(t,e,i,s,r),p.lodInfos.set(i,n),p.lowresCache.set(i,new WeakRef(e))};static registerMesh=(t,e,s,r,n,i)=>{const a=s.geometry;if(!a){g&&console.warn("gltf-progressive: Register mesh without geometry");return}a.userData||(a.userData={}),g&&console.log("> Progressive: register mesh "+s.name,{index:n,uuid:s.uuid},i,s),p.assignLODInformation(t,a,e,r,n),p.lodInfos.set(e,i);let u=p.lowresCache.get(e)?.deref();u?u.push(s.geometry):u=[s.geometry],p.lowresCache.set(e,new WeakRef(u)),r>0&&!Q(s)&&Je(s,a);for(const c of q)c.onRegisteredNewMesh?.(s,i)};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(),this.trackedTextureSlots=new WeakMap,this.pendingTextureSlotRequests=new WeakMap,this.latestTextureSlotRequests=new WeakMap,this.textureSlotRequestId=0}}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=p.cache.get(t);(g||te)&&console.debug(`[gltf-progressive] Memory: Resource GC'd
${t}`),e instanceof WeakRef&&(e.deref()||(p.cache.delete(t),(g||te)&&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),g==="verbose"&&console.log(`[gltf-progressive] Track texture ${e}, refCount: ${s} → ${s+1}`)}static untrackTextureUsage(t){const e=t.uuid,s=this.textureRefCounts.get(e);if(!s)return(g==="verbose"||te)&&n("[gltf-progressive] Memory: Untrack untracked texture (dispose immediately)",0),t.dispose(),!0;const r=s-1;if(r<=0)return this.textureRefCounts.delete(e),(g||te)&&n("[gltf-progressive] Memory: Dispose texture",r),t.dispose(),!0;return this.textureRefCounts.set(e,r),g==="verbose"&&n("[gltf-progressive] Memory: Untrack texture",r),!1;function n(i,a){const l=t.image?.width||t.source?.data?.width||0,u=t.image?.height||t.source?.data?.height||0,c=l&&u?`${l}x${u}`:"N/A";let d="N/A";l&&u&&(d=`~${(He(t)/(1024*1024)).toFixed(2)} MB`),console.log(`${i} — ${t.name} ${c} (${d}), refCount: ${s} → ${a}
${e}`)}}static workers=[];static _workersIndex=0;static async getOrLoadLOD(t,e,s){const r=g=="verbose",n=this.getAssignedLODInformation(t);if(!n)return g&&console.warn(`[gltf-progressive] No LOD information found: ${t.name}, uuid: ${t.uuid}, type: ${t.type}`,t),null;const i=n?.key;let a;if(t.isTexture===!0){const u=t;u.source&&u.source[fe]&&(a=u.source[fe])}if(a||(a=p.lodInfos.get(i)),!a)g&&console.warn(`Can not load LOD ${e}: no LOD info found for "${i}" ${t.name}`,t.type,p.lodInfos);else{if(e>0){let d=!1;const h=Array.isArray(a.lods);if(h&&e>=a.lods.length?d=!0:h||(d=!0),d){const m=this.lowresCache.get(i);if(m){const T=m.deref();if(T)return T;this.lowresCache.delete(i),g&&console.log(`[gltf-progressive] Lowres cache entry was GC'd: ${i}`)}return null}}const u=Array.isArray(a.lods)?a.lods[e]?.path:a.lods;if(!u)return g&&!a["missing:uri"]&&(a["missing:uri"]=!0,console.warn("Missing uri for progressive asset for LOD "+e,a)),null;const c=Ke(n.url,u);if(c.endsWith(".glb")||c.endsWith(".gltf")){if(!a.guid)return console.warn("missing pointer for glb/gltf texture",a),null;const d=c+"_"+a.guid,h=await this.tryResolveLODCacheEntry(this.cache.get(d),d,c,t,e,r);if(h.found)return h.value;if(s?.isCurrent?.()===!1)return r&&console.log(`Skipping stale LOD ${e} request before queue: ${c}`),null;const m=await this.queue.slot(c);if(s?.isCurrent?.()===!1)return r&&console.log(`Skipping stale LOD ${e} request after queue: ${c}`),null;const T=await this.tryResolveLODCacheEntry(this.cache.get(d),d,c,t,e,r);if(T.found)return T.value;if(!m.use)return g&&console.log(`LOD ${e} was aborted: ${c}`),null;const x=a,w=new Promise(async(M,V)=>{if(ot){const y=await(await rt({})).load(c);if(y.textures.length>0)for(const _ of y.textures){let O=_.texture;return p.assignLODInformation(n.url,O,i,e,void 0),t instanceof f.Texture&&(O=this.copySettings(t,O)),O&&(O.guid=x.guid),M(O)}if(y.geometries.length>0){const _=new Array;for(const O of y.geometries){const B=O.geometry;p.assignLODInformation(n.url,B,i,e,O.primitiveIndex),_.push(B)}return M(_)}return M(null)}const L=new Y.GLTFLoader;Le(L),g&&(await new Promise(b=>setTimeout(b,1e3)),r&&console.warn("Start loading (delayed) "+c,x.guid));let S=c;if(x&&Array.isArray(x.lods)){const b=x.lods[e];b.hash&&(S+="?v="+b.hash)}const D=await L.loadAsync(S).catch(b=>(console.error(`Error loading LOD ${e} from ${c}
`,b),M(null)));if(!D)return M(null);const R=D.parser;r&&console.log("Loading finished "+c,x.guid);let P=0;if(D.parser.json.textures){let b=!1;for(const y of D.parser.json.textures){if(y?.extensions){const _=y?.extensions[W];if(_?.guid&&_.guid===x.guid){b=!0;break}}P++}if(b){let y=await R.getDependency("texture",P);return y&&p.assignLODInformation(n.url,y,i,e,void 0),r&&console.log('change "'+t.name+'" → "'+y.name+'"',c,P,y,d),t instanceof f.Texture&&(y=this.copySettings(t,y)),y&&(y.guid=x.guid),M(y)}else g&&console.warn("Could not find texture with guid",x.guid,D.parser.json)}if(P=0,D.parser.json.meshes){let b=!1;for(const y of D.parser.json.meshes){if(y?.extensions){const _=y?.extensions[W];if(_?.guid&&_.guid===x.guid){b=!0;break}}P++}if(b){const y=await R.getDependency("mesh",P);if(r&&console.log(`Loaded Mesh "${y.name}"`,c,P,y,d),y.isMesh===!0){const _=y.geometry;return p.assignLODInformation(n.url,_,i,e,0),M(_)}else{const _=new Array;for(let O=0;O<y.children.length;O++){const B=y.children[O];if(B.isMesh===!0){const ne=B.geometry;p.assignLODInformation(n.url,ne,i,e,O),_.push(ne)}}return M(_)}}else g&&console.warn("Could not find mesh with guid",x.guid,D.parser.json)}return M(null)});this.cache.set(d,w),m.use(w);const v=await w;return v!=null?v instanceof f.Texture?(this.cache.set(d,new WeakRef(v)),p._resourceRegistry.register(v,d)):Array.isArray(v)?this.cache.set(d,Promise.resolve(v)):this.cache.set(d,Promise.resolve(v)):this.cache.set(d,Promise.resolve(null)),v}else if(t instanceof f.Texture){if(s?.isCurrent?.()===!1)return r&&console.log(`Skipping stale texture LOD ${e} request: ${c}`),null;r&&console.log("Load texture from uri: "+c);const h=await new f.TextureLoader().loadAsync(c);return s?.isCurrent?.()===!1?(h?.dispose(),null):(h?(h.guid=a.guid,h.flipY=!1,h.needsUpdate=!0,h.colorSpace=t.colorSpace,r&&console.log(a,h)):g&&console.warn("failed loading",c),h)}}return null}static async tryResolveLODCacheEntry(t,e,s,r,n,i){if(t===void 0)return{found:!1};if(i&&console.log(`LOD ${n} was already loading/loaded: ${e}`),t instanceof WeakRef){const u=t.deref();if(u){let c=u,d=!1;if(c instanceof f.Texture&&r instanceof f.Texture?c.image?.data||c.source?.data?c=this.copySettings(r,c):d=!0:c instanceof f.BufferGeometry&&r instanceof f.BufferGeometry&&(c.attributes.position?.array||(d=!0)),!d)return{found:!0,value:c}}return this.cache.delete(e),g&&console.log(`[gltf-progressive] Re-loading GC'd/disposed resource: ${e}`),{found:!1}}let a=await t.catch(u=>(console.error(`Error loading LOD ${n} from ${s}
`,u),null)),l=!1;return a==null||(a instanceof f.Texture&&r instanceof f.Texture?a.image?.data||a.source?.data?a=this.copySettings(r,a):(l=!0,this.cache.delete(e)):a instanceof f.BufferGeometry&&r instanceof f.BufferGeometry&&(a.attributes.position?.array||(l=!0,this.cache.delete(e)))),l?{found:!1}:{found:!0,value:a}}static _queue;static get queue(){return this._queue??=new je(ve()?20:50,{debug:g!=!1})}static assignLODInformation(t,e,s,r,n){if(!e)return;e.userData||(e.userData={});const i=new it(t,s,r,n);e.userData.LODS=i,"source"in e&&typeof e.source=="object"&&(e.source.LODS=i)}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?(g==="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 it{url;key;level;index;constructor(t,e,s,r){this.url=t,this.key=e,this.level=s,r!=null&&(this.index=r)}}class oe{static addPromise=(t,e,s,r)=>{r.forEach(n=>{n.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(n=>{this._resolve=n}),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){g&&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)){const r=this._seen.get(e);if(r>=this._maxPromisesPerObject){g&&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 A=z("debugprogressive"),at=A==="colors",lt=z("noprogressive"),he=Symbol("Needle:LODSManager"),ge=Symbol("Needle:LODState"),U=Symbol("Needle:CurrentLOD"),C={mesh_lod:-1,texture_lod:-1},ut=new f.Color,_e=[3526751,11065402,15978811,15897394,15749691,11032304,4827122,3332036,16739229,7306743,14053330,3516499,12035359,14703919,3963096,42662,14100029,8344319,4633680,16229681,3120096,12076434,9083434,2060171,15751837,10182117,48121,62932,16704576,15817653,5083278,5592405],pe=new f.Box3,F=new f.Box3,Oe=new f.Box3,ct=new f.Vector3,dt=new f.Vector3,ft=new f.Matrix4,G=new f.Vector3,K=new f.Vector3,j=new f.Vector3,H=new f.Vector3;function ht(o,t){const e=o.min,s=o.max,r=(e.x+s.x)*.5,n=(e.y+s.y)*.5;return G.set(r,n,e.z).applyMatrix4(t).z<0}function $e(o){const{geometry:t,matrixWorld:e,camera:s,projectionScreenMatrix:r,desiredDensity:n,canvasHeight:i=0,currentLevel:a=-1,xrEnabled:l=!1,debugDrawLine:u,warnMissingPrimitiveDensities:c=!1}=o,d=p.getMeshLODExtension(t)?.lods,h=p.getPrimitiveIndex(t),m=o.target??{level:a,primitiveIndex:h,screenCoverage:0,screenspaceVolume:new f.Vector3,centrality:1};if(m.level=a,m.primitiveIndex=h,m.screenCoverage=0,m.screenspaceVolume.set(0,0,0),m.centrality=1,!d?.length)return m;let T=o.boundingBox??t.boundingBox;if(T||(t.computeBoundingBox(),T=t.boundingBox),!T)return m;if(pe.copy(T).applyMatrix4(e),s.isPerspectiveCamera&&ht(pe,r))return m.level=0,m.screenCoverage=1/0,m.screenspaceVolume.set(1/0,1/0,1/0),m;if(F.copy(pe).applyMatrix4(r),l&&s.isPerspectiveCamera&&s.fov>70){const L=F.min,S=F.max;let D=L.x,R=L.y,P=S.x,b=S.y;const y=2,_=1.5,O=(L.x+S.x)*.5,B=(L.y+S.y)*.5;D=(D-O)*y+O,R=(R-B)*y+B,P=(P-O)*y+O,b=(b-B)*y+B;const ne=D<0&&P>0?0:Math.min(Math.abs(L.x),Math.abs(S.x)),Ue=R<0&&b>0?0:Math.min(Math.abs(L.y),Math.abs(S.y)),ue=Math.max(ne,Ue);m.centrality=(_-ue)*(_-ue)*(_-ue)}const x=F.getSize(ct);x.multiplyScalar(.5),globalThis.screen?.availHeight>0&&i>0&&x.multiplyScalar(i/globalThis.screen.availHeight),s.isPerspectiveCamera&&(x.x*=s.aspect),Oe.copy(T).applyMatrix4(e).applyMatrix4(s.matrixWorldInverse);const w=Oe.getSize(dt),v=Math.max(x.x,x.y),M=Math.max(w.x,w.y);v!==0&&M!==0&&(x.z=w.z/M*v);const V=Math.max(x.x,x.y,x.z)*m.centrality;if(m.screenCoverage=V,m.screenspaceVolume.copy(x),V<=0)return m;if(u){const L=ft.copy(r);L.invert(),G.copy(F.min),K.copy(F.max),K.x=G.x,j.copy(F.max),j.y=G.y,H.copy(F.max);const S=(G.z+H.z)*.5;G.z=K.z=j.z=H.z=S,G.applyMatrix4(L),K.applyMatrix4(L),j.applyMatrix4(L),H.applyMatrix4(L),u(G,K,255),u(G,j,255),u(K,H,255),u(j,H,255)}for(let L=0;L<d.length;L++){const S=d[L],D=S.densities?.[h]||S.density||1e-5;if(h>0&&c&&Ae()&&!S.densities&&!globalThis["NEEDLE:MISSING_LOD_PRIMITIVE_DENSITIES"]&&(globalThis["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.")),D/V<n){m.level=L;break}}return m}let re=class N{static debugDrawLine;static getObjectLODState(t){return t[ge]}static addPlugin(t){q.push(t)}static removePlugin(t){const e=q.indexOf(t);e>=0&&q.splice(e,1)}static getPlugins(){return q}static get(t,e){if(t[he])return console.debug("[gltf-progressive] LODsManager already exists for this renderer"),t[he];const s=new N(t,{engine:"unknown",...e});return t[he]=s,s}renderer;context;projectionScreenMatrix=new f.Matrix4;get plugins(){return q}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 oe(this.#r,{...t});this._newPromiseGroups.push(s);const r=performance.now();return s.ready.finally(()=>{const n=this._newPromiseGroups.indexOf(s);n>=0&&(this._newPromiseGroups.splice(n,1),Ae()&&performance.measure("LODsManager:awaitLoading",{start:r,detail:{id:e,name:t?.name,awaited:s.awaitedCount,resolved:s.resolvedCount}}))}),s.ready}trackLoadingPromise(t,e,s){return oe.addPromise(t,e,s,this._newPromiseGroups),s}_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){return t==="changed"?(this._lodchangedlisteners.push(e),()=>{this.removeEventListener(t,e)}):()=>{}}removeEventListener(t,e){let s=!1;if(t==="changed"){const r=this._lodchangedlisteners.indexOf(e);r>=0&&(this._lodchangedlisteners.splice(r,1),s=!0)}return s}constructor(t,e){this.renderer=t,this.context={...e}}#t;#o=new f.Clock;#r=0;#n=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;le(this.renderer),this.renderer.render=function(s,r){const n=e.renderer.getRenderTarget();(n==null||"isXRRenderTarget"in n&&n.isXRRenderTarget)&&(t=0,e.#r+=1,e.#n=e.#o.getDelta(),e.#i+=e.#n,e._fpsBuffer.shift(),e._fpsBuffer.push(1/e.#n),e.#s=e._fpsBuffer.reduce((a,l)=>a+l)/e._fpsBuffer.length,A&&e.#r%200===0&&console.log("FPS",Math.round(e.#s),"Interval:",e.#e));const i=t++;e.#t.call(this,s,r),e.onAfterRender(s,r,i)}}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 n=this.renderer.renderLists.get(t,0).opaque;let i=!0;if(n.length===1){const a=n[0].material;(a.name==="EffectMaterial"||a.name==="CopyShader")&&(i=!1)}if((e.parent&&e.parent.type==="CubeCamera"||s>=1&&e.type==="OrthographicCamera")&&(i=!1),i){if(lt||(this.updateInterval==="auto"?this.#s<40&&this.#e<10?(this.#e+=1,A&&console.warn("↓ Reducing LOD updates",this.#e,this.#s.toFixed(0))):this.#s>=60&&this.#e>1&&(this.#e-=1,A&&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 n=this.targetTriangleDensity;for(const l of r){if(l.material&&(l.geometry?.type==="BoxGeometry"||l.geometry?.type==="BufferGeometry")&&(l.material.name==="SphericalGaussianBlur"||l.material.name=="BackgroundCubeMaterial"||l.material.name==="CubemapFromEquirect"||l.material.name==="EquirectangularToCubeUV")){A&&(l.material["NEEDLE_PROGRESSIVE:IGNORE-WARNING"]||(l.material["NEEDLE_PROGRESSIVE:IGNORE-WARNING"]=!0,console.warn("Ignoring skybox or BLIT object",l,l.material.name,l.material.type)));continue}switch(l.material.type){case"LineBasicMaterial":case"LineDashedMaterial":case"PointsMaterial":case"ShadowMaterial":case"MeshDistanceMaterial":case"MeshDepthMaterial":continue}const u=l.object;(u instanceof f.Mesh||u.isMesh)&&this.updateLODs(t,e,u,n)}const i=s.transparent;for(const l of i){const u=l.object;(u instanceof f.Mesh||u.isMesh)&&this.updateLODs(t,e,u,n)}const a=s.transmissive;for(const l of a){const u=l.object;(u instanceof f.Mesh||u.isMesh)&&this.updateLODs(t,e,u,n)}}updateLODs(t,e,s,r){s.userData||(s.userData={});let n=s[ge];if(n||(n=new gt,s[ge]=n),n.frames++<2)return;for(const a of q)a.onBeforeUpdateLOD?.(this.renderer,t,e,s);const i=this.overrideLodLevel!==void 0?this.overrideLodLevel:E;i>=0?(C.mesh_lod=i,C.texture_lod=i):(this.calculateLodLevel(e,s,n,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,i),g&&s.material&&!s.isGizmo&&Ie(s.material),at&&s.material&&!s.isGizmo&&!s.isBatchedMesh&&Be(s.material,C.mesh_lod);for(const a of q)a.onAfterUpdatedLOD?.(this.renderer,t,e,s,C);n.lastLodLevel_Mesh=C.mesh_lod,n.lastLodLevel_Texture=C.texture_lod}loadProgressiveTextures(t,e,s){if(!t)return;if(Array.isArray(t)){for(const i of t)this.loadProgressiveTextures(i,e,s);return}let r=!1;(t[U]===void 0||e<t[U])&&(r=!0);const n=s!==void 0&&s>=0;if(n&&(r=t[U]!=s,e=s),r){t[U]=e;const i=n?{force:!0}:void 0,a=p.assignTextureLOD(t,e,i).then(l=>{this._lodchangedlisteners.forEach(u=>u({type:"texture",level:e,object:t}))});oe.addPromise("texture",t,a,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 n=t.geometry,i=p.assignMeshLOD(t,e).then(a=>(a&&t[U]==e&&n!=t.geometry&&this._lodchangedlisteners.forEach(l=>l({type:"mesh",level:e,object:t})),a));return oe.addPromise("mesh",t,i,this._newPromiseGroups),i}return Promise.resolve(null)}_sphere=new f.Sphere;_tempWorldPosition=new f.Vector3;static skinnedMeshBoundsFrameOffsetCounter=0;static $skinnedMeshBoundsOffset=Symbol("gltf-progressive-skinnedMeshBoundsOffset");calculateLodLevel(t,e,s,r,n){if(!e){n.mesh_lod=-1,n.texture_lod=-1;return}if(!t){n.mesh_lod=-1,n.texture_lod=-1;return}let a=10+1,l=!1;if(A&&e["DEBUG:LOD"]!=null)return e["DEBUG:LOD"];const u=p.getMeshLODExtension(e.geometry)?.lods,c=p.getPrimitiveIndex(e.geometry),d=u&&u.length>0,h=p.getMaterialMinMaxLODsCount(e.material),m=h.min_count!==1/0&&h.min_count>=0&&h.max_count>=0;if(!d&&!m){n.mesh_lod=0,n.texture_lod=0;return}d||(l=!0,a=0);const T=this.renderer.domElement.clientHeight||this.renderer.domElement.height;let x=e.geometry.boundingBox;if(e.type==="SkinnedMesh"){const w=e;if(!w.boundingBox)w.computeBoundingBox();else if(this.skinnedMeshAutoUpdateBoundsInterval>0){if(!w[N.$skinnedMeshBoundsOffset]){const M=N.skinnedMeshBoundsFrameOffsetCounter++;w[N.$skinnedMeshBoundsOffset]=M}const v=w[N.$skinnedMeshBoundsOffset];if((s.frames+v)%this.skinnedMeshAutoUpdateBoundsInterval===0){const M=Q(w),V=w.geometry;M&&(w.geometry=M),w.computeBoundingBox(),w.geometry=V}}x=w.boundingBox}if(x){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 M=t.getWorldPosition(this._tempWorldPosition);if(this._sphere.containsPoint(M)){n.mesh_lod=0,n.texture_lod=0;return}}const w=$e({geometry:e.geometry,matrixWorld:e.matrixWorld,camera:t,projectionScreenMatrix:this.projectionScreenMatrix,desiredDensity:r,canvasHeight:T,currentLevel:s.lastLodLevel_Mesh,boundingBox:x,xrEnabled:this.renderer.xr.enabled,debugDrawLine:A?N.debugDrawLine:void 0,warnMissingPrimitiveDensities:!0});if(s.lastCentrality=w.centrality,s.lastScreenCoverage=w.screenCoverage,s.lastScreenspaceVolume.copy(w.screenspaceVolume),w.screenCoverage===1/0){n.mesh_lod=0,n.texture_lod=0;return}w.level>=0&&w.level<a&&(a=w.level,l=!0)}if(l?n.mesh_lod=a:n.mesh_lod=s.lastLodLevel_Mesh,A&&n.mesh_lod!=s.lastLodLevel_Mesh){const v=u?.[n.mesh_lod];v&&console.log(`Mesh LOD changed: ${s.lastLodLevel_Mesh} → ${n.mesh_lod} (density: ${v.densities?.[c].toFixed(0)}) | ${e.name}`)}if(m){const w="saveData"in globalThis.navigator&&globalThis.navigator.saveData===!0;if(s.lastLodLevel_Texture<0){if(n.texture_lod=h.max_count-1,A){const v=h.lods[h.max_count-1];A&&console.log(`First Texture LOD ${n.texture_lod} (${v.max_height}px) - ${e.name}`)}}else{const v=s.lastScreenspaceVolume.x+s.lastScreenspaceVolume.y+s.lastScreenspaceVolume.z;let M=s.lastScreenCoverage*4;this.context?.engine==="model-viewer"&&(M*=1.5);const L=T/window.devicePixelRatio*M;let S=!1;for(let D=h.lods.length-1;D>=0;D--){const R=h.lods[D];if(!(w&&R.max_height>=2048)&&!(ve()&&R.max_height>4096)&&(R.max_height>L||!S&&D===0)){if(S=!0,n.texture_lod=D,A&&n.texture_lod<s.lastLodLevel_Texture){const P=R.max_height;console.log(`Texture LOD changed: ${s.lastLodLevel_Texture} → ${n.texture_lod} = ${P}px 
Screensize: ${L.toFixed(0)}px, Coverage: ${(100*s.lastScreenCoverage).toFixed(2)}%, Volume ${v.toFixed(1)} 
${e.name}`)}break}}}}else n.texture_lod=0}};class gt{frames=0;lastLodLevel_Mesh=-1;lastLodLevel_Texture=-1;lastScreenCoverage=0;lastScreenspaceVolume=new f.Vector3;lastCentrality=0}function Be(o,t){if(!(t<0)){if(Array.isArray(o)){for(const e of o)Be(e,t);return}"color"in o&&o.color instanceof f.Color&&(o.color.copy(Ge(t,ut)),o.needsUpdate=!0)}}function Ge(o,t){const e=Math.max(0,Math.min(_e.length-1,Math.floor(o)));return t.setHex(_e[e])}const Te=Symbol("NEEDLE_mesh_lod"),ie=Symbol("NEEDLE_texture_lod");let me=null;function qe(){const o=pt();o&&(o.mapURLs(function(t){return Se(),t}),Se(),me?.disconnect(),me=new MutationObserver(t=>{t.forEach(e=>{e.addedNodes.forEach(s=>{s instanceof HTMLElement&&s.tagName.toLowerCase()==="model-viewer"&&We(s)})})}),me.observe(document,{childList:!0,subtree:!0}))}function pt(){if(typeof customElements>"u")return null;const o=customElements.get("model-viewer");return o||(customElements.whenDefined("model-viewer").then(()=>{console.debug("[gltf-progressive] model-viewer defined"),qe()}),null)}function Se(){if(typeof document>"u")return;document.querySelectorAll("model-viewer").forEach(t=>{We(t)})}const be=new WeakSet;let mt=0;function We(o){if(!o||be.has(o))return null;be.add(o),console.debug("[gltf-progressive] found new model-viewer..."+ ++mt+`
`,o.getAttribute("src"));let t=null,e=null,s=null;for(let r=o;r!=null;r=Object.getPrototypeOf(r)){const n=Object.getOwnPropertySymbols(r),i=n.find(u=>u.toString()=="Symbol(renderer)"),a=n.find(u=>u.toString()=="Symbol(scene)"),l=n.find(u=>u.toString()=="Symbol(needsRender)");!t&&i!=null&&(t=o[i].threeRenderer),!e&&a!=null&&(e=o[a]),!s&&l!=null&&(s=o[l])}if(t&&e){let r=function(){if(s){let i=0;const a=setInterval(()=>{if(i++>5){clearInterval(a);return}s?.call(o)},300)}};console.debug("[gltf-progressive] setup model-viewer");const n=re.get(t,{engine:"model-viewer"});return re.addPlugin(new yt),n.enable(),n.addEventListener("changed",()=>{s?.call(o)}),o.addEventListener("model-visibility",i=>{i.detail.visible&&s?.call(o)}),o.addEventListener("load",()=>{r()}),()=>{n.disable()}}return null}class yt{_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[ie]==!0)return;e[ie]=!0;const s=this.tryGetCurrentGLTF(t),r=this.tryGetCurrentModelViewer(t),n=this.getUrl(r);if(n&&s&&e.material){let i=function(l){if(l[ie]==!0)return;l[ie]=!0,l.userData&&(l.userData.LOD=-1);const u=Object.keys(l);for(let c=0;c<u.length;c++){const d=u[c],h=l[d];if(h?.isTexture===!0){const m=h.userData?.associations?.textures;if(m==null)continue;const T=s.parser.json.textures[m];if(!T){console.warn("Texture data not found for texture index "+m);continue}if(T?.extensions?.[W]){const x=T.extensions[W];x&&n&&p.registerTexture(n,h,x.lods.length,m,x)}}}};const a=e.material;if(Array.isArray(a))for(const l of a)i(l);else i(a)}}tryParseMeshLOD(t,e){if(e[Te]==!0)return;e[Te]=!0;const s=this.tryGetCurrentModelViewer(t),r=this.getUrl(s);if(!r)return;const n=e.userData?.gltfExtensions?.[W];if(n&&r){const i=e.uuid;p.registerMesh(r,i,e,0,n.lods.length,n)}}}function xt(...o){let t,e,s,r;switch(o.length){case 2:[s,e]=o,r={};break;case 3:[s,e,r]=o;break;case 4:[t,e,s,r]=o;break;default:throw new Error("Invalid arguments")}le(e),Le(s),Me(s,{progressive:!0,...r?.hints}),s.register(i=>new p(i));const n=re.get(e);return r?.enableLODsManager!==!1&&n.enable(),n}qe();if(!Qe){const o={gltfProgressive:{useNeedleProgressive:xt,LODsManager:re,configureLoader:Me,getRaycastMesh:Q,useRaycastMeshes:Ze}};if(!globalThis.Needle)globalThis.Needle=o;else for(const t in o)globalThis.Needle[t]=o[t]}exports.LODsManager=re;exports.NEEDLE_progressive=p;exports.addDracoAndKTX2Loaders=Le;exports.calculateMeshLODLevel=$e;exports.configureLoader=Me;exports.createLoaders=le;exports.getLODColor=Ge;exports.getRaycastMesh=Q;exports.setDracoDecoderLocation=Pe;exports.setKTX2TranscoderLocation=ke;