@needle-tools/engine/dist/gltf-progressive-CVg80COO.min.js

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.

import{BufferGeometry as z,Mesh as V,Box3 as ne,Vector3 as S,Sphere as Te,CompressedTexture as He,Texture as I,Matrix3 as Xe,InterleavedBuffer as Ke,InterleavedBufferAttribute as Ye,BufferAttribute as Qe,TextureLoader as Je,Matrix4 as Se,Clock as Ze,Color as Oe}from"./three.min.js";import{DRACOLoader as et,KTX2Loader as tt,MeshoptDecoder as rt,GLTFLoader as he}from"./three-examples.min.js";const st="";globalThis.GLTF_PROGRESSIVE_VERSION=st,console.debug("[gltf-progressive] version -");let C="https://www.gstatic.com/draco/versioned/decoders/1.5.7/",H="https://cdn.needle.tools/static/three/0.179.1/basis2/";const ot=C,nt=H,ke=new URL(C+"draco_decoder.js");ke.searchParams.append("range","true"),fetch(ke,{method:"GET",headers:{Range:"bytes=0-1"}}).catch(n=>{console.debug(`Failed to fetch remote Draco decoder from ${C} (offline: ${typeof navigator<"u"?navigator.onLine:"unknown"})`),C===ot&&Ce("./include/draco/"),H===nt&&Pe("./include/ktx2/")}).finally(()=>{Ae()});const it=()=>({dracoDecoderPath:C,ktx2TranscoderPath:H});function Ce(n){C=n,T&&T[fe]!=C?(console.debug("Updating Draco decoder path to "+n),T[fe]=C,T.setDecoderPath(C),T.preload()):console.debug("Setting Draco decoder path to "+n)}function Pe(n){H=n,P&&P.transcoderPath!=H?(console.debug("Updating KTX2 transcoder path to "+n),P.setTranscoderPath(H),P.init()):console.debug("Setting KTX2 transcoder path to "+n)}function ie(n){return Ae(),n?P.detectSupport(n):n!==null&&console.warn("No renderer provided to detect ktx2 support - loading KTX2 textures might fail"),{dracoLoader:T,ktx2Loader:P,meshoptDecoder:ae}}function ge(n){n.dracoLoader||n.setDRACOLoader(T),n.ktx2Loader||n.setKTX2Loader(P),n.meshoptDecoder||n.setMeshoptDecoder(ae)}const fe=Symbol("dracoDecoderPath");let T,ae,P;function Ae(){T||(T=new et,T[fe]=C,T.setDecoderPath(C),T.setDecoderConfig({type:"js"}),T.preload()),P||(P=new tt,P.setTranscoderPath(H),P.init()),ae||(ae=rt)}const me=new WeakMap;function pe(n,t){let e=me.get(n);e?e=Object.assign(e,t):e=t,me.set(n,e)}const at=he.prototype.load;function lt(...n){const t=me.get(this);let e=n[0];const r=new URL(e,window.location.href);if(r.hostname.endsWith("needle.tools")){const s=t?.progressive!==void 0?t.progressive:!0,o=t?.usecase?t.usecase:"default";s?this.requestHeader.Accept=`*/*;progressive=allowed;usecase=${o}`:this.requestHeader.Accept=`*/*;usecase=${o}`,e=r.toString()}return n[0]=e,at?.call(this,...n)}he.prototype.load=lt,W("debugprogressive");function W(n){if(typeof window>"u")return!1;const t=new URL(window.location.href).searchParams.get(n);return t==null||t==="0"||t==="false"?!1:t===""?!0:t}function ut(n,t){if(t===void 0||n===void 0||t.startsWith("./")||t.startsWith("http")||t.startsWith("data:")||t.startsWith("blob:"))return t;const e=n.lastIndexOf("/");if(e>=0){const r=n.substring(0,e+1);for(;r.endsWith("/")&&t.startsWith("/");)t=t.substring(1);return r+t}return t}function xe(){return le!==void 0||(le=/iPhone|iPad|iPod|Android|IEMobile/i.test(navigator.userAgent),W("debugprogressive")&&console.log("[glTF Progressive]: isMobileDevice",le)),le}let le;function Re(){if(typeof window>"u")return!1;const n=new URL(window.location.href),t=n.hostname==="localhost"||/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(n.hostname);return n.hostname==="127.0.0.1"||t}class ct{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:r,resolve:s}=this._queue.shift();s({use:o=>this.add(r,o)})}}}function dt(n){const t=n.image?.width??0,e=n.image?.height??0,r=n.image?.depth??1,s=Math.floor(Math.log2(Math.max(t,e,r)))+1,o=ht(n);return t*e*r*o*(1-Math.pow(.25,s))/(1-.25)}function ht(n){let t=4;const e=n.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 r=1;const s=n.type;return s===1009||s===1010?r=1:s===1011||s===1012?r=2:s===1013||s===1014||s===1015?r=4:s===1016&&(r=2),t*r}const gt=typeof window>"u"&&typeof document>"u",ye=Symbol("needle:raycast-mesh");function Y(n){return n?.[ye]instanceof z?n[ye]:null}function ft(n,t){if((n.type==="Mesh"||n.type==="SkinnedMesh")&&!Y(n)){const e=pt(t);e.userData={isRaycastMesh:!0},n[ye]=e}}function mt(n=!0){if(n){if(ee)return;const t=ee=V.prototype.raycast;V.prototype.raycast=function(e,r){const s=this,o=Y(s);let i;o&&s.isMesh&&(i=s.geometry,s.geometry=o),t.call(this,e,r),i&&(s.geometry=i)}}else{if(!ee)return;V.prototype.raycast=ee,ee=null}}let ee=null;function pt(n){const t=new z;for(const e in n.attributes)t.setAttribute(e,n.getAttribute(e));return t.setIndex(n.getIndex()),t}const $=new Array,g=W("debugprogressive");let te,X=-1;if(g){let n=function(){X+=1,X>=t&&(X=-1),console.log(`Toggle LOD level [${X}]`)};window.addEventListener("keyup",e=>{e.key==="p"&&n(),e.key==="w"&&(te=!te,console.log(`Toggle wireframe [${te}]`));const r=parseInt(e.key);!isNaN(r)&&r>=0&&(X=r,console.log(`Set LOD level to [${X}]`))})}function Ie(n){if(g&&te!==void 0)if(Array.isArray(n))for(const t of n)Ie(t);else n&&"wireframe"in n&&(n.wireframe=te===!0)}const re=new Array;let xt=0;const yt=xe()?2:10;function vt(n){if(re.length<yt){const e=re.length;g&&console.warn(`[Worker] Creating new worker #${e}`);const r=_e.createWorker(n||{});return re.push(r),r}const t=xt++%re.length;return re[t]}class _e{constructor(t,e){this.worker=t,this._debug=e.debug??!1,t.onmessage=r=>{const s=r.data;switch(this._debug&&console.log("[Worker] EVENT",s),s.type){case"loaded-gltf":for(const o of this._running)if(o.url===s.result.url){wt(s.result),o.resolve(s.result);const i=o.url;i.startsWith("blob:")&&URL.revokeObjectURL(i)}}},t.onerror=r=>{console.error("[Worker] Error in gltf-progressive worker:",r)},t.postMessage({type:"init"})}static async createWorker(t){const e=new Worker(URL.createObjectURL(new Blob([`import '${new URL("./gltf-progressive.worker-BqODMeeW.js",import.meta.url).toString()}';`],{type:"text/javascript"})),{type:"module"});return new _e(e,t)}_running=[];_webglRenderer=null;async load(t,e){const r=it();let s=e?.renderer;s||(this._webglRenderer??=(async()=>{const{WebGLRenderer:a}=await import("./three.min.js").then(l=>l.THREE);return new a})(),s=await this._webglRenderer);const o=ie(s).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 i={type:"load",url:t,dracoDecoderPath:r.dracoDecoderPath,ktx2TranscoderPath:r.ktx2TranscoderPath,ktx2LoaderConfig:o};return this._debug&&console.debug("[Worker] Sending load request",i),this.worker.postMessage(i),new Promise(a=>{this._running.push({url:t.toString(),resolve:a})})}_debug=!1}function wt(n){for(const t of n.geometries){const e=t.geometry,r=new z;if(r.name=e.name||"",e.index){const s=e.index;r.setIndex(ve(s))}for(const s in e.attributes){const o=e.attributes[s],i=ve(o);r.setAttribute(s,i)}if(e.morphAttributes)for(const s in e.morphAttributes){const o=e.morphAttributes[s].map(i=>ve(i));r.morphAttributes[s]=o}if(r.morphTargetsRelative=e.morphTargetsRelative??!1,r.boundingBox=new ne,r.boundingBox.min=new S(e.boundingBox?.min.x,e.boundingBox?.min.y,e.boundingBox?.min.z),r.boundingBox.max=new S(e.boundingBox?.max.x,e.boundingBox?.max.y,e.boundingBox?.max.z),r.boundingSphere=new Te(new S(e.boundingSphere?.center.x,e.boundingSphere?.center.y,e.boundingSphere?.center.z),e.boundingSphere?.radius),e.groups)for(const s of e.groups)r.addGroup(s.start,s.count,s.materialIndex);e.userData&&(r.userData=e.userData),t.geometry=r}for(const t of n.textures){const e=t.texture;let r=null;if(e.isCompressedTexture){const s=e.mipmaps,o=e.image?.width||e.source?.data?.width||-1,i=e.image?.height||e.source?.data?.height||-1;r=new He(s,o,i,e.format,e.type,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.anisotropy,e.colorSpace)}else r=new I(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 Xe(...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 n}function ve(n){let t=n;if("isInterleavedBufferAttribute"in n&&n.isInterleavedBufferAttribute){const e=n.data,r=e.array,s=new Ke(r,e.stride);t=new Ye(s,n.itemSize,r.byteOffset,n.normalized),t.offset=n.offset}else"isBufferAttribute"in n&&n.isBufferAttribute&&(t=new Qe(n.array,n.itemSize,n.normalized),t.usage=n.usage,t.gpuType=n.gpuType,t.updateRanges=n.updateRanges);return t}const Lt=W("gltf-progressive-worker");W("gltf-progressive-reduce-mipmaps");const se=W("gltf-progressive-gc"),we=Symbol("needle-progressive-texture"),B="NEEDLE_progressive";class f{get name(){return B}static getMeshLODExtension(t){const e=this.getAssignedLODInformation(t);return e?.key?this.lodInfos.get(e.key):null}static getPrimitiveIndex(t){return this.getAssignedLODInformation(t)?.index??-1}static getMaterialMinMaxLODsCount(t,e){const r=this,s="LODS:minmax",o=t[s];if(o!=null)return o;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[s]=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[s]=e,e;function i(a,l){const u=r.getAssignedLODInformation(a);if(u){const c=r.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 p=c.lods[d];p.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,p.height),l.lods[d].max_height=Math.max(l.lods[d].max_height,p.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 i=t[o];if(i&&i.isTexture&&this.hasLODLevelAvailable(i,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 r,s;if(t.isMesh?r=t.geometry:(t.isBufferGeometry||t.isTexture)&&(r=t),r&&r?.userData?.LODS){const o=r.userData.LODS;if(s=this.lodInfos.get(o.key),e===void 0)return s!=null;if(s)return Array.isArray(s.lods)?e<s.lods.length:e===0}return!1}static assignMeshLOD(t,e,r){if(!t)return Promise.resolve(null);if(t instanceof V||t.isMesh===!0){const s=t.geometry,o=this.getAssignedLODInformation(s);if(!o)return Promise.resolve(null);for(const a of $)a.onBeforeGetLODMesh?.(t,e);t["LOD:requested level"]=e;const i=()=>t["LOD:requested level"]===e||this.shouldApplyStaleMeshLOD(t,e);return f.getOrLoadLOD(s,e,{isCurrent:i}).then(a=>{if(Array.isArray(a)){const u=o.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&&s!=a&&(a?.isBufferGeometry?typeof r?.apply=="function"?r.apply(a,e,t):r?.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,r){if(!t)return Promise.resolve(null);const s=r?.force===!0;if(t.isMesh===!0){const o=t;if(Array.isArray(o.material)){const i=new Array;for(const a of o.material){const l=this.assignTextureLOD(a,e,r);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(o.material,e,r)}if(t.isMaterial===!0){const o=t,i=[],a=new Array;if(this.trackCurrentMaterialTextureSlots(o),o.uniforms&&(o.isRawShaderMaterial||o.isShaderMaterial===!0)){const l=o;for(const u of Object.keys(l.uniforms)){const c=l.uniforms[u].value;if(c?.isTexture===!0){const d=this.assignTextureLODForSlot(c,e,o,u,s).then(p=>(p&&l.uniforms[u].value!=p&&(l.uniforms[u].value=p,l.uniformsNeedUpdate=!0),p));i.push(d),a.push(u)}}}else for(const l of Object.keys(o)){const u=o[l];if(u?.isTexture===!0){const c=this.assignTextureLODForSlot(u,e,o,l,s);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],p=a[c];d&&d.isTexture===!0?u.push({material:o,slot:p,texture:d,level:e}):u.push({material:o,slot:p,texture:null,level:e})}return u})}if(t instanceof I||t.isTexture===!0){const o=t;return this.assignTextureLODForSlot(o,e,null,null,s)}return Promise.resolve(null)}static set maxConcurrentLoadingTasks(t){f.queue.maxConcurrent=t}static get maxConcurrentLoadingTasks(){return f.queue.maxConcurrent}static assignTextureLODForSlot(t,e,r,s,o){if(t?.isTexture!==!0)return Promise.resolve(null);if(s==="glyphMap")return Promise.resolve(t);const i=this.getAssignedLODInformation(t);if(i&&(i.level===e||!o&&i.level<e))return Promise.resolve(t);if(r&&s){const d=this.getPendingTextureSlotRequest(r,s);if(d&&d.level===e&&d.force===o)return d.promise}const a=r&&s?this.nextTextureSlotRequestId(r,s,e,o):0,l=()=>!r||!s||this.getLatestTextureSlotRequest(r,s)?.id===a,u=()=>l()||this.shouldApplyStaleTextureSlotLOD(r,s,e,o),c=f.getOrLoadLOD(t,e,{isCurrent:u}).then(d=>{if(!l()&&!this.shouldApplyStaleTextureSlotLOD(r,s,e,o))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&&r&&s){const p=this.getMaterialTextureSlot(r,s)??t;if(p&&!o){const m=this.getAssignedLODInformation(p);if(m&&m?.level<e)return g==="verbose"&&console.warn("Assigned texture level is already higher: ",m.level,e,r,p,d),null}this.assignTrackedTextureSlot(r,s,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 r&&s&&this.setPendingTextureSlotRequest(r,s,e,o,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 r of Object.keys(e.uniforms)){const s=e.uniforms[r].value;s?.isTexture===!0&&this.ensureTrackedTextureSlot(t,r,s)}return}for(const e of Object.keys(t)){const r=t[e];r?.isTexture===!0&&this.ensureTrackedTextureSlot(t,e,r)}}static getPendingTextureSlotRequest(t,e){return this.pendingTextureSlotRequests.get(t)?.get(e)}static nextTextureSlotRequestId(t,e,r,s){let o=this.latestTextureSlotRequests.get(t);o||(o=new Map,this.latestTextureSlotRequests.set(t,o));const i=++this.textureSlotRequestId;return o.set(e,{id:i,level:r,force:s}),i}static getLatestTextureSlotRequest(t,e){return this.latestTextureSlotRequests.get(t)?.get(e)}static shouldApplyStaleTextureSlotLOD(t,e,r,s){if(!t||!e)return!1;const o=this.getLatestTextureSlotRequest(t,e),i=this.getMaterialTextureSlot(t,e),a=this.getAssignedLODInformation(i)?.level??1/0;return r>=a?!1:s?o?r>=o.level:!1:!0}static shouldApplyStaleMeshLOD(t,e){const r=t["LOD:requested level"];if(typeof r!="number")return!1;const s=this.getAssignedLODInformation(t.geometry)?.level??1/0;return e<s&&e>=r}static setPendingTextureSlotRequest(t,e,r,s,o,i){let a=this.pendingTextureSlotRequests.get(t);a||(a=new Map,this.pendingTextureSlotRequests.set(t,a));const l={level:r,force:s,id:o,promise:i};a.set(e,l),i.finally(()=>{a.get(e)?.id===o&&a.delete(e)})}static getMaterialTextureSlot(t,e){const r=t.uniforms?.[e];if(r?.value?.isTexture===!0)return r.value;const s=t[e];return s?.isTexture===!0?s:null}static setMaterialTextureSlot(t,e,r){const s=t.uniforms?.[e];if(s?.value?.isTexture===!0){s.value=r,t.uniformsNeedUpdate=!0;return}t[e]=r}static assignTrackedTextureSlot(t,e,r){let s=this.trackedTextureSlots.get(t);s||(s=new Map,this.trackedTextureSlots.set(t,s));const o=this.getMaterialTextureSlot(t,e);let i=s.get(e);!i&&o?i=this.ensureTrackedTextureSlot(t,e,o):i&&o&&i!==o&&(this.releaseTrackedTextureSlot(t,e,i),i=this.ensureTrackedTextureSlot(t,e,o)),!(i===r&&o===r)&&(i&&i!==r&&this.releaseTrackedTextureSlot(t,e,i),i!==r&&(this.trackTextureUsage(r),s.set(e,r)),o!==r&&this.setMaterialTextureSlot(t,e,r))}static ensureTrackedTextureSlot(t,e,r){let s=this.trackedTextureSlots.get(t);s||(s=new Map,this.trackedTextureSlots.set(t,s));const o=s.get(e);return o===r?o:(o&&this.releaseTrackedTextureSlot(t,e,o),this.trackTextureUsage(r),s.set(e,r),r)}static releaseTrackedTextureSlot(t,e,r){const s=this.trackedTextureSlots.get(t);if(s?.get(e)===r&&s.delete(e),this.untrackTextureUsage(r)&&(g||se)){const o=this.getAssignedLODInformation(r);console.log(`[gltf-progressive] Disposed old texture LOD ${o?.level??"?"} for ${t.name||t.type}.${e}`,r.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?.[B];return e?(this._isLoadingMesh=!0,this.parser.getDependency("mesh",t).then(r=>(this._isLoadingMesh=!1,r&&f.registerMesh(this.url,e.guid,r,e.lods?.length,0,e),r))):null};afterRoot(t){return g&&console.log("AFTER",this.url,t),this.parser.json.textures?.forEach((e,r)=>{if(e?.extensions){const s=e?.extensions[B];if(s){if(!s.lods){g&&console.warn("Texture has no LODs",s);return}let o=!1;for(const i of this.parser.associations.keys())i.isTexture===!0&&this.parser.associations.get(i)?.textures===r&&(o=!0,f.registerTexture(this.url,i,s.lods?.length,r,s));o||this.parser.getDependency("texture",r).then(i=>{i&&f.registerTexture(this.url,i,s.lods?.length,r,s)})}}}),this.parser.json.meshes?.forEach((e,r)=>{if(e?.extensions){const s=e?.extensions[B];if(s&&s.lods){for(const o of this.parser.associations.keys())if(o.isMesh){const i=this.parser.associations.get(o);i?.meshes===r&&f.registerMesh(this.url,s.guid,o,s.lods.length,i.primitives,s)}}}}),null}static registerTexture=(t,e,r,s,o)=>{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[${s}] "${e.name||e.uuid}", Current: ${a}x${l}, Max: ${o.lods[0]?.width}x${o.lods[0]?.height}, uuid: ${e.uuid}`,o,e)}e.source&&(e.source[we]=o);const i=o.guid;f.assignLODInformation(t,e,i,r,s),f.lodInfos.set(i,o),f.lowresCache.set(i,new WeakRef(e))};static registerMesh=(t,e,r,s,o,i)=>{const a=r.geometry;if(!a){g&&console.warn("gltf-progressive: Register mesh without geometry");return}a.userData||(a.userData={}),g&&console.log("> Progressive: register mesh "+r.name,{index:o,uuid:r.uuid},i,r),f.assignLODInformation(t,a,e,s,o),f.lodInfos.set(e,i);let l=f.lowresCache.get(e)?.deref();l?l.push(r.geometry):l=[r.geometry],f.lowresCache.set(e,new WeakRef(l)),s>0&&!Y(r)&&ft(r,a);for(const u of $)u.onRegisteredNewMesh?.(r,i)};static dispose(t){if(t){this.lodInfos.delete(t);const e=this.lowresCache.get(t);if(e){const r=e.deref();if(r){if(r.isTexture){const s=r;this.textureRefCounts.delete(s.uuid),s.dispose()}else if(Array.isArray(r))for(const s of r)s.dispose()}this.lowresCache.delete(t)}for(const[r,s]of this.cache)r.includes(t)&&(this._disposeCacheEntry(s),this.cache.delete(r))}else{this.lodInfos.clear();for(const[,e]of this.lowresCache){const r=e.deref();if(r){if(r.isTexture){const s=r;this.textureRefCounts.delete(s.uuid),s.dispose()}else if(Array.isArray(r))for(const s of r)s.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 r of e)r.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=f.cache.get(t);(g||se)&&console.debug(`[gltf-progressive] Memory: Resource GC'd
${t}`),e instanceof WeakRef&&(e.deref()||(f.cache.delete(t),(g||se)&&console.log("[gltf-progressive] \u21AA Cache entry deleted (GC)")))});static trackTextureUsage(t){const e=t.uuid,r=this.textureRefCounts.get(e)||0;this.textureRefCounts.set(e,r+1),g==="verbose"&&console.log(`[gltf-progressive] Track texture ${e}, refCount: ${r} \u2192 ${r+1}`)}static untrackTextureUsage(t){const e=t.uuid,r=this.textureRefCounts.get(e);if(!r)return(g==="verbose"||se)&&o("[gltf-progressive] Memory: Untrack untracked texture (dispose immediately)",0),t.dispose(),!0;const s=r-1;if(s<=0)return this.textureRefCounts.delete(e),(g||se)&&o("[gltf-progressive] Memory: Dispose texture",s),t.dispose(),!0;return this.textureRefCounts.set(e,s),g==="verbose"&&o("[gltf-progressive] Memory: Untrack texture",s),!1;function o(i,a){const l=t.image?.width||t.source?.data?.width||0,u=t.image?.height||t.source?.data?.height||0,c=l&&u?`${l}x${u}`:"N/A";let d="N/A";l&&u&&(d=`~${(dt(t)/(1024*1024)).toFixed(2)} MB`),console.log(`${i} \u2014 ${t.name} ${c} (${d}), refCount: ${r} \u2192 ${a}
${e}`)}}static workers=[];static _workersIndex=0;static async getOrLoadLOD(t,e,r){const s=g=="verbose",o=this.getAssignedLODInformation(t);if(!o)return g&&console.warn(`[gltf-progressive] No LOD information found: ${t.name}, uuid: ${t.uuid}, type: ${t.type}`,t),null;const i=o?.key;let a;if(t.isTexture===!0){const l=t;l.source&&l.source[we]&&(a=l.source[we])}if(a||(a=f.lodInfos.get(i)),!a)g&&console.warn(`Can not load LOD ${e}: no LOD info found for "${i}" ${t.name}`,t.type,f.lodInfos);else{if(e>0){let c=!1;const d=Array.isArray(a.lods);if(d&&e>=a.lods.length?c=!0:d||(c=!0),c){const p=this.lowresCache.get(i);if(p){const m=p.deref();if(m)return m;this.lowresCache.delete(i),g&&console.log(`[gltf-progressive] Lowres cache entry was GC'd: ${i}`)}return null}}const l=Array.isArray(a.lods)?a.lods[e]?.path:a.lods;if(!l)return g&&!a["missing:uri"]&&(a["missing:uri"]=!0,console.warn("Missing uri for progressive asset for LOD "+e,a)),null;const u=ut(o.url,l);if(u.endsWith(".glb")||u.endsWith(".gltf")){if(!a.guid)return console.warn("missing pointer for glb/gltf texture",a),null;const c=u+"_"+a.guid,d=await this.tryResolveLODCacheEntry(this.cache.get(c),c,u,t,e,s);if(d.found)return d.value;if(r?.isCurrent?.()===!1)return s&&console.log(`Skipping stale LOD ${e} request before queue: ${u}`),null;const p=await this.queue.slot(u);if(r?.isCurrent?.()===!1)return s&&console.log(`Skipping stale LOD ${e} request after queue: ${u}`),null;const m=await this.tryResolveLODCacheEntry(this.cache.get(c),c,u,t,e,s);if(m.found)return m.value;if(!p.use)return g&&console.log(`LOD ${e} was aborted: ${u}`),null;const L=a,h=new Promise(async(D,G)=>{if(Lt){const b=await(await vt({})).load(u);if(b.textures.length>0)for(const x of b.textures){let w=x.texture;return f.assignLODInformation(o.url,w,i,e,void 0),t instanceof I&&(w=this.copySettings(t,w)),w&&(w.guid=L.guid),D(w)}if(b.geometries.length>0){const x=new Array;for(const w of b.geometries){const k=w.geometry;f.assignLODInformation(o.url,k,i,e,w.primitiveIndex),x.push(k)}return D(x)}return D(null)}const E=new he;ge(E),g&&(await new Promise(b=>setTimeout(b,1e3)),s&&console.warn("Start loading (delayed) "+u,L.guid));let y=u;if(L&&Array.isArray(L.lods)){const b=L.lods[e];b.hash&&(y+="?v="+b.hash)}const v=await E.loadAsync(y).catch(b=>(console.error(`Error loading LOD ${e} from ${u}
`,b),D(null)));if(!v)return D(null);const R=v.parser;s&&console.log("Loading finished "+u,L.guid);let O=0;if(v.parser.json.textures){let b=!1;for(const x of v.parser.json.textures){if(x?.extensions){const w=x?.extensions[B];if(w?.guid&&w.guid===L.guid){b=!0;break}}O++}if(b){let x=await R.getDependency("texture",O);return x&&f.assignLODInformation(o.url,x,i,e,void 0),s&&console.log('change "'+t.name+'" \u2192 "'+x.name+'"',u,O,x,c),t instanceof I&&(x=this.copySettings(t,x)),x&&(x.guid=L.guid),D(x)}else g&&console.warn("Could not find texture with guid",L.guid,v.parser.json)}if(O=0,v.parser.json.meshes){let b=!1;for(const x of v.parser.json.meshes){if(x?.extensions){const w=x?.extensions[B];if(w?.guid&&w.guid===L.guid){b=!0;break}}O++}if(b){const x=await R.getDependency("mesh",O);if(s&&console.log(`Loaded Mesh "${x.name}"`,u,O,x,c),x.isMesh===!0){const w=x.geometry;return f.assignLODInformation(o.url,w,i,e,0),D(w)}else{const w=new Array;for(let k=0;k<x.children.length;k++){const U=x.children[k];if(U.isMesh===!0){const F=U.geometry;f.assignLODInformation(o.url,F,i,e,k),w.push(F)}}return D(w)}}else g&&console.warn("Could not find mesh with guid",L.guid,v.parser.json)}return D(null)});this.cache.set(c,h),p.use(h);const M=await h;return M!=null?M instanceof I?(this.cache.set(c,new WeakRef(M)),f._resourceRegistry.register(M,c)):Array.isArray(M)?this.cache.set(c,Promise.resolve(M)):this.cache.set(c,Promise.resolve(M)):this.cache.set(c,Promise.resolve(null)),M}else if(t instanceof I){if(r?.isCurrent?.()===!1)return s&&console.log(`Skipping stale texture LOD ${e} request: ${u}`),null;s&&console.log("Load texture from uri: "+u);const c=await new Je().loadAsync(u);return r?.isCurrent?.()===!1?(c?.dispose(),null):(c?(c.guid=a.guid,c.flipY=!1,c.needsUpdate=!0,c.colorSpace=t.colorSpace,s&&console.log(a,c)):g&&console.warn("failed loading",u),c)}}return null}static async tryResolveLODCacheEntry(t,e,r,s,o,i){if(t===void 0)return{found:!1};if(i&&console.log(`LOD ${o} was already loading/loaded: ${e}`),t instanceof WeakRef){const u=t.deref();if(u){let c=u,d=!1;if(c instanceof I&&s instanceof I?c.image?.data||c.source?.data?c=this.copySettings(s,c):d=!0:c instanceof z&&s instanceof z&&(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 ${o} from ${r}
`,u),null)),l=!1;return a==null||(a instanceof I&&s instanceof I?a.image?.data||a.source?.data?a=this.copySettings(s,a):(l=!0,this.cache.delete(e)):a instanceof z&&s instanceof z&&(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 ct(xe()?20:50,{debug:g!=!1})}static assignLODInformation(t,e,r,s,o){if(!e)return;e.userData||(e.userData={});const i=new bt(t,r,s,o);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 bt{url;key;level;index;constructor(t,e,r,s){this.url=t,this.key=e,this.level=r,s!=null&&(this.index=s)}}class ue{static addPromise=(t,e,r,s)=>{s.forEach(o=>{o.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 r=Math.max(e.frames??2,2);this._frame_start=e.waitForFirstCapture?void 0:t,this._frames_to_capture=r,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){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 s=this._seen.get(e);if(s>=this._maxPromisesPerObject){g&&console.warn("PromiseGroup: Already awaiting object ignoring new promise for it.");return}this._seen.set(e,s+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 A=W("debugprogressive"),Mt=A==="colors",Dt=W("noprogressive"),Le=Symbol("Needle:LODSManager"),be=Symbol("Needle:LODState"),j=Symbol("Needle:CurrentLOD"),_={mesh_lod:-1,texture_lod:-1},_t=new Oe,Ee=[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],Me=new ne,N=new ne,$e=new ne,Tt=new S,St=new S,Ot=new Se,q=new S,Q=new S,J=new S,Z=new S;function kt(n,t){const e=n.min,r=n.max,s=(e.x+r.x)*.5,o=(e.y+r.y)*.5;return q.set(s,o,e.z).applyMatrix4(t).z<0}function Be(n){const{geometry:t,matrixWorld:e,camera:r,projectionScreenMatrix:s,desiredDensity:o,canvasHeight:i=0,currentLevel:a=-1,xrEnabled:l=!1,debugDrawLine:u,warnMissingPrimitiveDensities:c=!1}=n,d=f.getMeshLODExtension(t)?.lods,p=f.getPrimitiveIndex(t),m=n.target??{level:a,primitiveIndex:p,screenCoverage:0,screenspaceVolume:new S,centrality:1};if(m.level=a,m.primitiveIndex=p,m.screenCoverage=0,m.screenspaceVolume.set(0,0,0),m.centrality=1,!d?.length)return m;let L=n.boundingBox??t.boundingBox;if(L||(t.computeBoundingBox(),L=t.boundingBox),!L)return m;if(Me.copy(L).applyMatrix4(e),r.isPerspectiveCamera&&kt(Me,s))return m.level=0,m.screenCoverage=1/0,m.screenspaceVolume.set(1/0,1/0,1/0),m;if(N.copy(Me).applyMatrix4(s),l&&r.isPerspectiveCamera&&r.fov>70){const y=N.min,v=N.max;let R=y.x,O=y.y,b=v.x,x=v.y;const w=2,k=1.5,U=(y.x+v.x)*.5,F=(y.y+v.y)*.5;R=(R-U)*w+U,O=(O-F)*w+F,b=(b-U)*w+U,x=(x-F)*w+F;const ze=R<0&&b>0?0:Math.min(Math.abs(y.x),Math.abs(v.x)),Ve=O<0&&x>0?0:Math.min(Math.abs(y.y),Math.abs(v.y)),de=Math.max(ze,Ve);m.centrality=(k-de)*(k-de)*(k-de)}const h=N.getSize(Tt);h.multiplyScalar(.5),globalThis.screen?.availHeight>0&&i>0&&h.multiplyScalar(i/globalThis.screen.availHeight),r.isPerspectiveCamera&&(h.x*=r.aspect),$e.copy(L).applyMatrix4(e).applyMatrix4(r.matrixWorldInverse);const M=$e.getSize(St),D=Math.max(h.x,h.y),G=Math.max(M.x,M.y);D!==0&&G!==0&&(h.z=M.z/G*D);const E=Math.max(h.x,h.y,h.z)*m.centrality;if(m.screenCoverage=E,m.screenspaceVolume.copy(h),E<=0)return m;if(u){const y=Ot.copy(s);y.invert(),q.copy(N.min),Q.copy(N.max),Q.x=q.x,J.copy(N.max),J.y=q.y,Z.copy(N.max);const v=(q.z+Z.z)*.5;q.z=Q.z=J.z=Z.z=v,q.applyMatrix4(y),Q.applyMatrix4(y),J.applyMatrix4(y),Z.applyMatrix4(y),u(q,Q,255),u(q,J,255),u(Q,Z,255),u(J,Z,255)}for(let y=0;y<d.length;y++){const v=d[y],R=v.densities?.[p]||v.density||1e-5;if(p>0&&c&&Re()&&!v.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.")),R/E<o){m.level=y;break}}return m}let oe=class K{static debugDrawLine;static getObjectLODState(t){return t[be]}static addPlugin(t){$.push(t)}static removePlugin(t){const e=$.indexOf(t);e>=0&&$.splice(e,1)}static getPlugins(){return $}static get(t,e){if(t[Le])return console.debug("[gltf-progressive] LODsManager already exists for this renderer"),t[Le];const r=new K(t,{engine:"unknown",...e});return t[Le]=r,r}renderer;context;projectionScreenMatrix=new Se;get plugins(){return $}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 ue(this.#s,{...t});this._newPromiseGroups.push(r);const s=performance.now();return r.ready.finally(()=>{const o=this._newPromiseGroups.indexOf(r);o>=0&&(this._newPromiseGroups.splice(o,1),Re()&&performance.measure("LODsManager:awaitLoading",{start:s,detail:{id:e,name:t?.name,awaited:r.awaitedCount,resolved:r.resolvedCount}}))}),r.ready}trackLoadingPromise(t,e,r){return ue.addPromise(t,e,r,this._newPromiseGroups),r}_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){return t==="changed"?(this._lodchangedlisteners.push(e),()=>{this.removeEventListener(t,e)}):()=>{}}removeEventListener(t,e){let r=!1;if(t==="changed"){const s=this._lodchangedlisteners.indexOf(e);s>=0&&(this._lodchangedlisteners.splice(s,1),r=!0)}return r}constructor(t,e){this.renderer=t,this.context={...e}}#t;#n=new Ze;#s=0;#o=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;ie(this.renderer),this.renderer.render=function(r,s){const o=e.renderer.getRenderTarget();(o==null||"isXRRenderTarget"in o&&o.isXRRenderTarget)&&(t=0,e.#s+=1,e.#o=e.#n.getDelta(),e.#i+=e.#o,e._fpsBuffer.shift(),e._fpsBuffer.push(1/e.#o),e.#r=e._fpsBuffer.reduce((a,l)=>a+l)/e._fpsBuffer.length,A&&e.#s%200===0&&console.log("FPS",Math.round(e.#r),"Interval:",e.#e));const i=t++;e.#t.call(this,r,s),e.onAfterRender(r,s,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,r){if(this.pause)return;const s=this.renderer.renderLists.get(t,0).opaque;let o=!0;if(s.length===1){const i=s[0].material;(i.name==="EffectMaterial"||i.name==="CopyShader")&&(o=!1)}if((e.parent&&e.parent.type==="CubeCamera"||r>=1&&e.type==="OrthographicCamera")&&(o=!1),o){if(Dt||(this.updateInterval==="auto"?this.#r<40&&this.#e<10?(this.#e+=1,A&&console.warn("\u2193 Reducing LOD updates",this.#e,this.#r.toFixed(0))):this.#r>=60&&this.#e>1&&(this.#e-=1,A&&console.warn("\u2191 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),s=r.opaque;this.projectionScreenMatrix.multiplyMatrices(e.projectionMatrix,e.matrixWorldInverse);const o=this.targetTriangleDensity;for(const l of s){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 V||u.isMesh)&&this.updateLODs(t,e,u,o)}const i=r.transparent;for(const l of i){const u=l.object;(u instanceof V||u.isMesh)&&this.updateLODs(t,e,u,o)}const a=r.transmissive;for(const l of a){const u=l.object;(u instanceof V||u.isMesh)&&this.updateLODs(t,e,u,o)}}updateLODs(t,e,r,s){r.userData||(r.userData={});let o=r[be];if(o||(o=new Ct,r[be]=o),o.frames++<2)return;for(const a of $)a.onBeforeUpdateLOD?.(this.renderer,t,e,r);const i=this.overrideLodLevel!==void 0?this.overrideLodLevel:X;i>=0?(_.mesh_lod=i,_.texture_lod=i):(this.calculateLodLevel(e,r,o,s,_),_.mesh_lod=Math.round(_.mesh_lod),_.texture_lod=Math.round(_.texture_lod)),_.mesh_lod>=0&&this.loadProgressiveMeshes(r,_.mesh_lod),r.material&&_.texture_lod>=0&&this.loadProgressiveTextures(r.material,_.texture_lod,i),g&&r.material&&!r.isGizmo&&Ie(r.material),Mt&&r.material&&!r.isGizmo&&!r.isBatchedMesh&&qe(r.material,_.mesh_lod);for(const a of $)a.onAfterUpdatedLOD?.(this.renderer,t,e,r,_);o.lastLodLevel_Mesh=_.mesh_lod,o.lastLodLevel_Texture=_.texture_lod}loadProgressiveTextures(t,e,r){if(!t)return;if(Array.isArray(t)){for(const i of t)this.loadProgressiveTextures(i,e,r);return}let s=!1;(t[j]===void 0||e<t[j])&&(s=!0);const o=r!==void 0&&r>=0;if(o&&(s=t[j]!=r,e=r),s){t[j]=e;const i=o?{force:!0}:void 0,a=f.assignTextureLOD(t,e,i).then(l=>{this._lodchangedlisteners.forEach(u=>u({type:"texture",level:e,object:t}))});ue.addPromise("texture",t,a,this._newPromiseGroups)}}loadProgressiveMeshes(t,e){if(!t)return Promise.resolve(null);let r=t[j]!==e;const s=t["DEBUG:LOD"];if(s!=null&&(r=t[j]!=s,e=s),r){t[j]=e;const o=t.geometry,i=f.assignMeshLOD(t,e).then(a=>(a&&t[j]==e&&o!=t.geometry&&this._lodchangedlisteners.forEach(l=>l({type:"mesh",level:e,object:t})),a));return ue.addPromise("mesh",t,i,this._newPromiseGroups),i}return Promise.resolve(null)}_sphere=new Te;_tempWorldPosition=new S;static skinnedMeshBoundsFrameOffsetCounter=0;static $skinnedMeshBoundsOffset=Symbol("gltf-progressive-skinnedMeshBoundsOffset");calculateLodLevel(t,e,r,s,o){if(!e){o.mesh_lod=-1,o.texture_lod=-1;return}if(!t){o.mesh_lod=-1,o.texture_lod=-1;return}let i=10+1,a=!1;if(A&&e["DEBUG:LOD"]!=null)return e["DEBUG:LOD"];const l=f.getMeshLODExtension(e.geometry)?.lods,u=f.getPrimitiveIndex(e.geometry),c=l&&l.length>0,d=f.getMaterialMinMaxLODsCount(e.material),p=d.min_count!==1/0&&d.min_count>=0&&d.max_count>=0;if(!c&&!p){o.mesh_lod=0,o.texture_lod=0;return}c||(a=!0,i=0);const m=this.renderer.domElement.clientHeight||this.renderer.domElement.height;let L=e.geometry.boundingBox;if(e.type==="SkinnedMesh"){const h=e;if(!h.boundingBox)h.computeBoundingBox();else if(this.skinnedMeshAutoUpdateBoundsInterval>0){if(!h[K.$skinnedMeshBoundsOffset]){const D=K.skinnedMeshBoundsFrameOffsetCounter++;h[K.$skinnedMeshBoundsOffset]=D}const M=h[K.$skinnedMeshBoundsOffset];if((r.frames+M)%this.skinnedMeshAutoUpdateBoundsInterval===0){const D=Y(h),G=h.geometry;D&&(h.geometry=D),h.computeBoundingBox(),h.geometry=G}}L=h.boundingBox}if(L){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)){o.mesh_lod=0,o.texture_lod=0;return}}const h=Be({geometry:e.geometry,matrixWorld:e.matrixWorld,camera:t,projectionScreenMatrix:this.projectionScreenMatrix,desiredDensity:s,canvasHeight:m,currentLevel:r.lastLodLevel_Mesh,boundingBox:L,xrEnabled:this.renderer.xr.enabled,debugDrawLine:A?K.debugDrawLine:void 0,warnMissingPrimitiveDensities:!0});if(r.lastCentrality=h.centrality,r.lastScreenCoverage=h.screenCoverage,r.lastScreenspaceVolume.copy(h.screenspaceVolume),h.screenCoverage===1/0){o.mesh_lod=0,o.texture_lod=0;return}h.level>=0&&h.level<i&&(i=h.level,a=!0)}if(a?o.mesh_lod=i:o.mesh_lod=r.lastLodLevel_Mesh,A&&o.mesh_lod!=r.lastLodLevel_Mesh){const h=l?.[o.mesh_lod];h&&console.log(`Mesh LOD changed: ${r.lastLodLevel_Mesh} \u2192 ${o.mesh_lod} (density: ${h.densities?.[u].toFixed(0)}) | ${e.name}`)}if(p){const h="saveData"in globalThis.navigator&&globalThis.navigator.saveData===!0;if(r.lastLodLevel_Texture<0){if(o.texture_lod=d.max_count-1,A){const M=d.lods[d.max_count-1];A&&console.log(`First Texture LOD ${o.texture_lod} (${M.max_height}px) - ${e.name}`)}}else{const M=r.lastScreenspaceVolume.x+r.lastScreenspaceVolume.y+r.lastScreenspaceVolume.z;let D=r.lastScreenCoverage*4;this.context?.engine==="model-viewer"&&(D*=1.5);const G=m/window.devicePixelRatio*D;let E=!1;for(let y=d.lods.length-1;y>=0;y--){const v=d.lods[y];if(!(h&&v.max_height>=2048)&&!(xe()&&v.max_height>4096)&&(v.max_height>G||!E&&y===0)){if(E=!0,o.texture_lod=y,A&&o.texture_lod<r.lastLodLevel_Texture){const R=v.max_height;console.log(`Texture LOD changed: ${r.lastLodLevel_Texture} \u2192 ${o.texture_lod} = ${R}px 
Screensize: ${G.toFixed(0)}px, Coverage: ${(100*r.lastScreenCoverage).toFixed(2)}%, Volume ${M.toFixed(1)} 
${e.name}`)}break}}}}else o.texture_lod=0}};class Ct{frames=0;lastLodLevel_Mesh=-1;lastLodLevel_Texture=-1;lastScreenCoverage=0;lastScreenspaceVolume=new S;lastCentrality=0}function qe(n,t){if(!(t<0)){if(Array.isArray(n)){for(const e of n)qe(e,t);return}"color"in n&&n.color instanceof Oe&&(n.color.copy(Ge(t,_t)),n.needsUpdate=!0)}}function Ge(n,t){const e=Math.max(0,Math.min(Ee.length-1,Math.floor(n)));return t.setHex(Ee[e])}const We=Symbol("NEEDLE_mesh_lod"),ce=Symbol("NEEDLE_texture_lod");let De=null;function je(){const n=Pt();n&&(n.mapURLs(function(t){return Ne(),t}),Ne(),De?.disconnect(),De=new MutationObserver(t=>{t.forEach(e=>{e.addedNodes.forEach(r=>{r instanceof HTMLElement&&r.tagName.toLowerCase()==="model-viewer"&&Fe(r)})})}),De.observe(document,{childList:!0,subtree:!0}))}function Pt(){return typeof customElements>"u"?null:customElements.get("model-viewer")||(customElements.whenDefined("model-viewer").then(()=>{console.debug("[gltf-progressive] model-viewer defined"),je()}),null)}function Ne(){typeof document>"u"||document.querySelectorAll("model-viewer").forEach(n=>{Fe(n)})}const Ue=new WeakSet;let At=0;function Fe(n){if(!n||Ue.has(n))return null;Ue.add(n),console.debug("[gltf-progressive] found new model-viewer..."+ ++At+`
`,n.getAttribute("src"));let t=null,e=null,r=null;for(let s=n;s!=null;s=Object.getPrototypeOf(s)){const o=Object.getOwnPropertySymbols(s),i=o.find(u=>u.toString()=="Symbol(renderer)"),a=o.find(u=>u.toString()=="Symbol(scene)"),l=o.find(u=>u.toString()=="Symbol(needsRender)");!t&&i!=null&&(t=n[i].threeRenderer),!e&&a!=null&&(e=n[a]),!r&&l!=null&&(r=n[l])}if(t&&e){let s=function(){if(r){let i=0;const a=setInterval(()=>{if(i++>5){clearInterval(a);return}r?.call(n)},300)}};console.debug("[gltf-progressive] setup model-viewer");const o=oe.get(t,{engine:"model-viewer"});return oe.addPlugin(new Rt),o.enable(),o.addEventListener("changed",()=>{r?.call(n)}),n.addEventListener("model-visibility",i=>{i.detail.visible&&r?.call(n)}),n.addEventListener("load",()=>{s()}),()=>{o.disable()}}return null}class Rt{_didWarnAboutMissingUrl=!1;onBeforeUpdateLOD(t,e,r,s){this.tryParseMeshLOD(e,s),this.tryParseTextureLOD(e,s)}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[ce]==!0)return;e[ce]=!0;const r=this.tryGetCurrentGLTF(t),s=this.tryGetCurrentModelViewer(t),o=this.getUrl(s);if(o&&r&&e.material){let i=function(l){if(l[ce]==!0)return;l[ce]=!0,l.userData&&(l.userData.LOD=-1);const u=Object.keys(l);for(let c=0;c<u.length;c++){const d=u[c],p=l[d];if(p?.isTexture===!0){const m=p.userData?.associations?.textures;if(m==null)continue;const L=r.parser.json.textures[m];if(!L){console.warn("Texture data not found for texture index "+m);continue}if(L?.extensions?.[B]){const h=L.extensions[B];h&&o&&f.registerTexture(o,p,h.lods.length,m,h)}}}};const a=e.material;if(Array.isArray(a))for(const l of a)i(l);else i(a)}}tryParseMeshLOD(t,e){if(e[We]==!0)return;e[We]=!0;const r=this.tryGetCurrentModelViewer(t),s=this.getUrl(r);if(!s)return;const o=e.userData?.gltfExtensions?.[B];if(o&&s){const i=e.uuid;f.registerMesh(s,i,e,0,o.lods.length,o)}}}function It(...n){let t,e,r,s;switch(n.length){case 2:[r,e]=n,s={};break;case 3:[r,e,s]=n;break;case 4:[t,e,r,s]=n;break;default:throw new Error("Invalid arguments")}ie(e),ge(r),pe(r,{progressive:!0,...s?.hints}),r.register(i=>new f(i));const o=oe.get(e);return s?.enableLODsManager!==!1&&o.enable(),o}if(je(),!gt){const n={gltfProgressive:{useNeedleProgressive:It,LODsManager:oe,configureLoader:pe,getRaycastMesh:Y,useRaycastMeshes:mt}};if(!globalThis.Needle)globalThis.Needle=n;else for(const t in n)globalThis.Needle[t]=n[t]}export{oe as LODsManager,f as NEEDLE_progressive,ge as addDracoAndKTX2Loaders,Be as calculateMeshLODLevel,pe as configureLoader,ie as createLoaders,Ge as getLODColor,Y as getRaycastMesh,Ce as setDracoDecoderLocation,Pe as setKTX2TranscoderLocation};