@gltf-transform/core - npm Package Compare versions

Comparing version 2.0.5 to 2.1.0

dist/core.modern.js

@@ -1,2 +0,2 @@
-import{GraphNode as t,$attributes as e,GraphEdge as r,$immutableKeys as s,isRef as n,isRefList as i,isRefMap as o,Graph as a}from"property-graph";export{Graph,GraphEdge}from"property-graph";import{transformMat4 as u,length as c}from"gl-matrix/vec3";import{determinant as h,getRotation as l,multiply as f}from"gl-matrix/mat4";const d="v2.0.5",g="@glb.bin";var p,m,w,y,T;function v(t){const e={min:[Infinity,Infinity,Infinity],max:[-Infinity,-Infinity,-Infinity]},r=t.propertyType===p.NODE?[t]:t.listChildren();for(const t of r)t.traverse(t=>{const r=t.getMesh();if(!r)return;const s=x(r,t.getWorldMatrix());b(s.min,e),b(s.max,e)});return e}function x(t,e){const r={min:[Infinity,Infinity,Infinity],max:[-Infinity,-Infinity,-Infinity]};for(const s of t.listPrimitives()){const t=s.getAttribute("POSITION");if(!t)continue;let n=[0,0,0],i=[0,0,0];for(let s=0;s<t.getCount();s++)n=t.getElement(s,n),i=u(i,n,e),b(i,r)}return r}function b(t,e){for(let r=0;r<3;r++)e.min[r]=Math.min(t[r],e.min[r]),e.max[r]=Math.max(t[r],e.max[r])}!function(t){t.ACCESSOR="Accessor",t.ANIMATION="Animation",t.ANIMATION_CHANNEL="AnimationChannel",t.ANIMATION_SAMPLER="AnimationSampler",t.BUFFER="Buffer",t.CAMERA="Camera",t.MATERIAL="Material",t.MESH="Mesh",t.PRIMITIVE="Primitive",t.PRIMITIVE_TARGET="PrimitiveTarget",t.NODE="Node",t.ROOT="Root",t.SCENE="Scene",t.SKIN="Skin",t.TEXTURE="Texture",t.TEXTURE_INFO="TextureInfo"}(p||(p={})),function(t){t.INTERLEAVED="interleaved",t.SEPARATE="separate"}(m||(m={})),function(t){t.ARRAY_BUFFER="ARRAY_BUFFER",t.ELEMENT_ARRAY_BUFFER="ELEMENT_ARRAY_BUFFER",t.INVERSE_BIND_MATRICES="INVERSE_BIND_MATRICES",t.OTHER="OTHER"}(w||(w={})),function(t){t[t.R=4096]="R",t[t.G=256]="G",t[t.B=16]="B",t[t.A=1]="A"}(y||(y={})),function(t){t.GLTF="GLTF",t.GLB="GLB"}(T||(T={}));class A{static createBufferFromDataURI(t){if("undefined"==typeof Buffer){const e=atob(t.split(",")[1]),r=new Uint8Array(e.length);for(let 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assertView(t){if(t&&!ArrayBuffer.isView(t))throw new Error(`Method requires Uint8Array parameter; received "${typeof t}".`);return t}}class E{static hexToFactor(t,e){t=Math.floor(t);const r=e;return r[0]=(t>>16&255)/255,r[1]=(t>>8&255)/255,r[2]=(255&t)/255,this.convertSRGBToLinear(e,e)}static factorToHex(t){const e=[...t],[r,s,n]=this.convertLinearToSRGB(t,e);return 255*r<<16^255*s<<8^255*n<<0}static convertSRGBToLinear(t,e){const r=t,s=e;for(let t=0;t<3;t++)s[t]=r[t]<.04045?.0773993808*r[t]:Math.pow(.9478672986*r[t]+.0521327014,2.4);return e}static convertLinearToSRGB(t,e){const r=t,s=e;for(let t=0;t<3;t++)s[t]=r[t]<.0031308?12.92*r[t]:1.055*Math.pow(r[t],.41666)-.055;return e}}class S{static basename(t){const e=(t=new URL(t,"https://null.example").pathname).split(/[\\/]/).pop();return e.substring(0,e.lastIndexOf("."))}static extension(t){return 0!==t.indexOf("data:")?(t=new 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Math.max(t/32767,-1);case 5120:return Math.max(t/127,-1);default:throw new Error("Invalid component type.")}}static normalize(t,e){switch(e){case 5126:return t;case 5123:return Math.round(65535*t);case 5121:return Math.round(255*t);case 5122:return Math.round(32767*t);case 5120:return Math.round(127*t);default:throw new Error("Invalid component type.")}}static decompose(t,e,r,s){let n=c([t[0],t[1],t[2]]);const i=c([t[4],t[5],t[6]]),o=c([t[8],t[9],t[10]]);h(t)<0&&(n=-n),e[0]=t[12],e[1]=t[13],e[2]=t[14];const a=t.slice(),u=1/n,f=1/i,d=1/o;a[0]*=u,a[1]*=u,a[2]*=u,a[4]*=f,a[5]*=f,a[6]*=f,a[8]*=d,a[9]*=d,a[10]*=d,l(r,a),s[0]=n,s[1]=i,s[2]=o}static compose(t,e,r,s){const n=s,i=e[0],o=e[1],a=e[2],u=e[3],c=i+i,h=o+o,l=a+a,f=i*c,d=i*h,g=i*l,p=o*h,m=o*l,w=a*l,y=u*c,T=u*h,v=u*l,x=r[0],b=r[1],A=r[2];return 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t{constructor(t,r=""){super(t),this[e].name=r,this.init(),this.dispatchEvent({type:"create"})}getDefaults(){return Object.assign(super.getDefaults(),{name:"",extras:{}})}getName(){return this.get("name")}setName(t){return this.set("name",t)}getExtras(){return this.get("extras")}setExtras(t){return this.set("extras",t)}clone(){return new(0,this.constructor)(this.graph).copy(this,$)}copy(t,n=$){for(const t in this[e]){const n=this[e][t];if(n instanceof r)this[s].has(t)||n.dispose();else if(Array.isArray(n)&&n[0]instanceof r)for(const t of n)t.dispose();else if(O(n)&&Object.values(n)[0]instanceof r)for(const t in n)n[t].dispose()}for(const i in t[e]){const o=this[e][i],a=t[e][i];if(a instanceof r)this[s].has(i)?o.getChild().copy(n(a.getChild()),n):this.setRef(i,n(a.getChild()),a.getAttributes());else if(Array.isArray(a)&&a[0]instanceof r)for(const t of a)this.addRef(i,n(t.getChild()),t.getAttributes());else if(O(a)&&Object.values(a)[0]instanceof r)for(const t in a){const 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q{constructor(...t){super(...t),this.i=F.identity,this.o=F.identity}init(){this.propertyType=p.ACCESSOR}getDefaults(){return Object.assign(super.getDefaults(),{array:null,type:W.Type.SCALAR,componentType:W.ComponentType.FLOAT,normalized:!1,buffer:null})}copy(t,e=$){return super.copy(t,e),this.i=t.i,this.o=t.o,this}static getElementSize(t){switch(t){case W.Type.SCALAR:return 1;case W.Type.VEC2:return 2;case W.Type.VEC3:return 3;case W.Type.VEC4:case W.Type.MAT2:return 4;case W.Type.MAT3:return 9;case W.Type.MAT4:return 16;default:throw new Error("Unexpected type: "+t)}}static getComponentSize(t){switch(t){case W.ComponentType.BYTE:case W.ComponentType.UNSIGNED_BYTE:return 1;case W.ComponentType.SHORT:case W.ComponentType.UNSIGNED_SHORT:return 2;case W.ComponentType.UNSIGNED_INT:case W.ComponentType.FLOAT:return 4;default:throw new Error("Unexpected component type: "+t)}}getMinNormalized(t){const e=this.getElementSize();this.getMin(t);for(let r=0;r<e;r++)t[r]=this.o(t[r]);return t}getMin(t){const e=this.get("array"),r=this.getCount(),s=this.getElementSize();for(let e=0;e<s;e++)t[e]=Infinity;for(let n=0;n<r*s;n+=s)for(let r=0;r<s;r++){const s=e[n+r];Number.isFinite(s)&&(t[r]=Math.min(t[r],s))}return t}getMaxNormalized(t){const e=this.getElementSize();this.getMax(t);for(let r=0;r<e;r++)t[r]=this.o(t[r]);return t}getMax(t){const e=this.get("array"),r=this.getCount(),s=this.getElementSize();for(let e=0;e<s;e++)t[e]=-Infinity;for(let n=0;n<r*s;n+=s)for(let r=0;r<s;r++){const s=e[n+r];Number.isFinite(s)&&(t[r]=Math.max(t[r],s))}return t}getCount(){const t=this.get("array");return t?t.length/this.getElementSize():0}getType(){return this.get("type")}setType(t){return this.set("type",t)}getElementSize(){return W.getElementSize(this.get("type"))}getComponentSize(){return this.get("array").BYTES_PER_ELEMENT}getComponentType(){return this.get("componentType")}getNormalized(){return this.get("normalized")}setNormalized(t){return this.set("normalized",t),t?(this.o=t=>F.denormalize(t,this.get("componentType")),this.i=t=>F.normalize(t,this.get("componentType"))):(this.o=F.identity,this.i=F.identity),this}getScalar(t){const e=this.getElementSize();return this.o(this.get("array")[t*e])}setScalar(t,e){return this.get("array")[t*this.getElementSize()]=this.i(e),this}getElement(t,e){const r=this.getElementSize(),s=this.get("array");for(let n=0;n<r;n++)e[n]=this.o(s[t*r+n]);return e}setElement(t,e){const r=this.getElementSize(),s=this.get("array");for(let n=0;n<r;n++)s[t*r+n]=this.i(e[n]);return this}getBuffer(){return this.getRef("buffer")}setBuffer(t){return this.setRef("buffer",t)}getArray(){return this.get("array")}setArray(t){return this.set("componentType",t?function(t){switch(t.constructor){case Float32Array:return W.ComponentType.FLOAT;case Uint32Array:return W.ComponentType.UNSIGNED_INT;case Uint16Array:return W.ComponentType.UNSIGNED_SHORT;case Uint8Array:return W.ComponentType.UNSIGNED_BYTE;case 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this.setRef("output",t,{usage:w.OTHER})}}Z.Interpolation={LINEAR:"LINEAR",STEP:"STEP",CUBICSPLINE:"CUBICSPLINE"};class K extends q{init(){this.propertyType=p.BUFFER}getDefaults(){return Object.assign(super.getDefaults(),{uri:""})}getURI(){return this.get("uri")}setURI(t){return this.set("uri",t)}}class Q extends q{init(){this.propertyType=p.CAMERA}getDefaults(){return Object.assign(super.getDefaults(),{type:Q.Type.PERSPECTIVE,znear:.1,zfar:100,aspectRatio:null,yfov:2*Math.PI*50/360,xmag:1,ymag:1})}getType(){return this.get("type")}setType(t){return this.set("type",t)}getZNear(){return this.get("znear")}setZNear(t){return this.set("znear",t)}getZFar(){return this.get("zfar")}setZFar(t){return this.set("zfar",t)}getAspectRatio(){return this.get("aspectRatio")}setAspectRatio(t){return this.set("aspectRatio",t)}getYFov(){return this.get("yfov")}setYFov(t){return this.set("yfov",t)}getXMag(){return this.get("xmag")}setXMag(t){return this.set("xmag",t)}getYMag(){return this.get("ymag")}setYMag(t){return this.set("ymag",t)}}Q.Type={PERSPECTIVE:"perspective",ORTHOGRAPHIC:"orthographic"};class X extends V{t(t){if(!this.parentTypes.includes(t.propertyType))throw new Error(`Parent "${t.propertyType}" invalid for child "${this.propertyType}".`)}}X.EXTENSION_NAME=void 0;class tt extends q{init(){this.propertyType=p.TEXTURE_INFO}getDefaults(){return Object.assign(super.getDefaults(),{texCoord:0,magFilter:null,minFilter:null,wrapS:tt.WrapMode.REPEAT,wrapT:tt.WrapMode.REPEAT})}getTexCoord(){return this.get("texCoord")}setTexCoord(t){return this.set("texCoord",t)}getMagFilter(){return this.get("magFilter")}setMagFilter(t){return this.set("magFilter",t)}getMinFilter(){return this.get("minFilter")}setMinFilter(t){return this.set("minFilter",t)}getWrapS(){return this.get("wrapS")}setWrapS(t){return this.set("wrapS",t)}getWrapT(){return this.get("wrapT")}setWrapT(t){return this.set("wrapT",t)}}tt.WrapMode={CLAMP_TO_EDGE:33071,MIRRORED_REPEAT:33648,REPEAT:10497},tt.MagFilter={NEAREST:9728,LINEAR:9729},tt.MinFilter={NEAREST:9728,LINEAR:9729,NEAREST_MIPMAP_NEAREST:9984,LINEAR_MIPMAP_NEAREST:9985,NEAREST_MIPMAP_LINEAR:9986,LINEAR_MIPMAP_LINEAR:9987};const{R:et,G:rt,B:st,A:nt}=y;class it extends q{init(){this.propertyType=p.MATERIAL}getDefaults(){return Object.assign(super.getDefaults(),{alphaMode:it.AlphaMode.OPAQUE,alphaCutoff:.5,doubleSided:!1,baseColorFactor:[1,1,1,1],baseColorTexture:null,baseColorTextureInfo:new tt(this.graph,"baseColorTextureInfo"),emissiveFactor:[0,0,0],emissiveTexture:null,emissiveTextureInfo:new tt(this.graph,"emissiveTextureInfo"),normalScale:1,normalTexture:null,normalTextureInfo:new tt(this.graph,"normalTextureInfo"),occlusionStrength:1,occlusionTexture:null,occlusionTextureInfo:new tt(this.graph,"occlusionTextureInfo"),roughnessFactor:1,metallicFactor:1,metallicRoughnessTexture:null,metallicRoughnessTextureInfo:new tt(this.graph,"metallicRoughnessTextureInfo")})}getDoubleSided(){return this.get("doubleSided")}setDoubleSided(t){return this.set("doubleSided",t)}getAlpha(){return this.get("baseColorFactor")[3]}setAlpha(t){const e=this.get("baseColorFactor").slice();return e[3]=t,this.set("baseColorFactor",e)}getAlphaMode(){return this.get("alphaMode")}setAlphaMode(t){return this.set("alphaMode",t)}getAlphaCutoff(){return this.get("alphaCutoff")}setAlphaCutoff(t){return this.set("alphaCutoff",t)}getBaseColorFactor(){return this.get("baseColorFactor")}setBaseColorFactor(t){return this.set("baseColorFactor",t)}getBaseColorHex(){return E.factorToHex(this.get("baseColorFactor"))}setBaseColorHex(t){const e=this.get("baseColorFactor").slice();return this.set("baseColorFactor",E.hexToFactor(t,e))}getBaseColorTexture(){return this.getRef("baseColorTexture")}getBaseColorTextureInfo(){return this.getRef("baseColorTexture")?this.getRef("baseColorTextureInfo"):null}setBaseColorTexture(t){return this.setRef("baseColorTexture",t,{channels:et|rt|st|nt})}getEmissiveFactor(){return this.get("emissiveFactor")}setEmissiveFactor(t){return this.set("emissiveFactor",t)}getEmissiveHex(){return E.factorToHex(this.get("emissiveFactor"))}setEmissiveHex(t){const e=this.get("emissiveFactor").slice();return this.set("emissiveFactor",E.hexToFactor(t,e))}getEmissiveTexture(){return this.getRef("emissiveTexture")}getEmissiveTextureInfo(){return this.getRef("emissiveTexture")?this.getRef("emissiveTextureInfo"):null}setEmissiveTexture(t){return this.setRef("emissiveTexture",t,{channels:et|rt|st})}getNormalScale(){return this.get("normalScale")}setNormalScale(t){return this.set("normalScale",t)}getNormalTexture(){return this.getRef("normalTexture")}getNormalTextureInfo(){return this.getRef("normalTexture")?this.getRef("normalTextureInfo"):null}setNormalTexture(t){return this.setRef("normalTexture",t,{channels:et|rt|st})}getOcclusionStrength(){return this.get("occlusionStrength")}setOcclusionStrength(t){return this.set("occlusionStrength",t)}getOcclusionTexture(){return this.getRef("occlusionTexture")}getOcclusionTextureInfo(){return this.getRef("occlusionTexture")?this.getRef("occlusionTextureInfo"):null}setOcclusionTexture(t){return this.setRef("occlusionTexture",t,{channels:et})}getRoughnessFactor(){return this.get("roughnessFactor")}setRoughnessFactor(t){return this.set("roughnessFactor",t)}getMetallicFactor(){return this.get("metallicFactor")}setMetallicFactor(t){return this.set("metallicFactor",t)}getMetallicRoughnessTexture(){return this.getRef("metallicRoughnessTexture")}getMetallicRoughnessTextureInfo(){return this.getRef("metallicRoughnessTexture")?this.getRef("metallicRoughnessTextureInfo"):null}setMetallicRoughnessTexture(t){return this.setRef("metallicRoughnessTexture",t,{channels:rt|st})}}it.AlphaMode={OPAQUE:"OPAQUE",MASK:"MASK",BLEND:"BLEND"};class ot extends q{init(){this.propertyType=p.MESH}getDefaults(){return Object.assign(super.getDefaults(),{weights:[],primitives:[]})}addPrimitive(t){return this.addRef("primitives",t)}removePrimitive(t){return this.removeRef("primitives",t)}listPrimitives(){return this.listRefs("primitives")}getWeights(){return this.get("weights")}setWeights(t){return this.set("weights",t)}}class at extends q{constructor(...t){super(...t),this.u=null}init(){this.propertyType=p.NODE}getDefaults(){return Object.assign(super.getDefaults(),{translation:[0,0,0],rotation:[0,0,0,1],scale:[1,1,1],weights:[],camera:null,mesh:null,skin:null,children:[]})}copy(t,e=$){if(e===$)throw new Error("Node cannot be copied.");return super.copy(t,e)}getTranslation(){return this.get("translation")}getRotation(){return this.get("rotation")}getScale(){return this.get("scale")}setTranslation(t){return this.set("translation",t)}setRotation(t){return this.set("rotation",t)}setScale(t){return this.set("scale",t)}getMatrix(){return F.compose(this.get("translation"),this.get("rotation"),this.get("scale"),[])}setMatrix(t){const e=this.get("translation").slice(),r=this.get("rotation").slice(),s=this.get("scale").slice();return F.decompose(t,e,r,s),this.set("translation",e).set("rotation",r).set("scale",s)}getWorldTranslation(){const t=[0,0,0];return F.decompose(this.getWorldMatrix(),t,[0,0,0,1],[1,1,1]),t}getWorldRotation(){const t=[0,0,0,1];return F.decompose(this.getWorldMatrix(),[0,0,0],t,[1,1,1]),t}getWorldScale(){const t=[1,1,1];return F.decompose(this.getWorldMatrix(),[0,0,0],[0,0,0,1],t),t}getWorldMatrix(){const t=[];for(let e=this;e instanceof at;e=e.u)t.push(e);let e;const r=t.pop().getMatrix();for(;e=t.pop();)f(r,r,e.getMatrix());return r}addChild(t){t.u&&t.u.removeChild(t),this.addRef("children",t),t.u=this;const r=this[e].children;return r[r.length-1].addEventListener("dispose",()=>t.u=null),this}removeChild(t){return this.removeRef("children",t)}listChildren(){return this.listRefs("children")}getParent(){return this.u}getMesh(){return this.getRef("mesh")}setMesh(t){return this.setRef("mesh",t)}getCamera(){return this.getRef("camera")}setCamera(t){return this.setRef("camera",t)}getSkin(){return this.getRef("skin")}setSkin(t){return this.setRef("skin",t)}getWeights(){return this.get("weights")}setWeights(t){return this.set("weights",t)}traverse(t){t(this);for(const e of this.listChildren())e.traverse(t);return this}}class ut extends q{init(){this.propertyType=p.PRIMITIVE}getDefaults(){return Object.assign(super.getDefaults(),{mode:ut.Mode.TRIANGLES,material:null,indices:null,attributes:{},targets:[]})}getIndices(){return this.getRef("indices")}setIndices(t){return this.setRef("indices",t,{usage:w.ELEMENT_ARRAY_BUFFER})}getAttribute(t){return this.getRefMap("attributes",t)}setAttribute(t,e){return this.setRefMap("attributes",t,e,{usage:w.ARRAY_BUFFER})}listAttributes(){return this.listRefMapValues("attributes")}listSemantics(){return this.listRefMapKeys("attributes")}getMaterial(){return this.getRef("material")}setMaterial(t){return this.setRef("material",t)}getMode(){return this.get("mode")}setMode(t){return this.set("mode",t)}listTargets(){return this.listRefs("targets")}addTarget(t){return this.addRef("targets",t)}removeTarget(t){return this.removeRef("targets",t)}}ut.Mode={POINTS:0,LINES:1,LINE_LOOP:2,LINE_STRIP:3,TRIANGLES:4,TRIANGLE_STRIP:5,TRIANGLE_FAN:6};class ct extends V{init(){this.propertyType=p.PRIMITIVE_TARGET}getDefaults(){return Object.assign(super.getDefaults(),{attributes:{}})}getAttribute(t){return this.getRefMap("attributes",t)}setAttribute(t,e){return this.setRefMap("attributes",t,e,{usage:w.ARRAY_BUFFER})}listAttributes(){return this.listRefMapValues("attributes")}listSemantics(){return this.listRefMapKeys("attributes")}}function ht(){return(ht=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var r=arguments[e];for(var s in r)Object.prototype.hasOwnProperty.call(r,s)&&(t[s]=r[s])}return t}).apply(this,arguments)}class lt extends q{init(){this.propertyType=p.SCENE}getDefaults(){return Object.assign(super.getDefaults(),{children:[]})}copy(t,e=$){if(e===$)throw new Error("Scene cannot be copied.");return super.copy(t,e)}addChild(t){t.u&&t.u.removeChild(t),this.addRef("children",t),t.u=this;const r=this[e].children;return r[r.length-1].addEventListener("dispose",()=>t.u=null),this}removeChild(t){return this.removeRef("children",t)}listChildren(){return this.listRefs("children")}traverse(t){for(const e of this.listChildren())e.traverse(t);return this}}class ft extends q{init(){this.propertyType=p.SKIN}getDefaults(){return Object.assign(super.getDefaults(),{skeleton:null,inverseBindMatrices:null,joints:[]})}getSkeleton(){return this.getRef("skeleton")}setSkeleton(t){return this.setRef("skeleton",t)}getInverseBindMatrices(){return this.getRef("inverseBindMatrices")}setInverseBindMatrices(t){return this.setRef("inverseBindMatrices",t,{usage:w.INVERSE_BIND_MATRICES})}addJoint(t){return this.addRef("joints",t)}removeJoint(t){return this.removeRef("joints",t)}listJoints(){return this.listRefs("joints")}}class dt extends q{init(){this.propertyType=p.TEXTURE}getDefaults(){return Object.assign(super.getDefaults(),{image:null,mimeType:"",uri:""})}getMimeType(){return this.get("mimeType")||I.extensionToMimeType(S.extension(this.get("uri")))}setMimeType(t){return this.set("mimeType",t)}getURI(){return this.get("uri")}setURI(t){return this.set("uri",t),this.set("mimeType",I.extensionToMimeType(S.extension(t))),this}getImage(){return this.get("image")}setImage(t){return this.set("image",A.assertView(t))}getSize(){const t=this.get("image");return t?I.getSize(t,this.getMimeType()):null}}class gt extends q{init(){this.propertyType=p.ROOT}getDefaults(){return Object.assign(super.getDefaults(),{asset:{generator:"glTF-Transform v2.0.5",version:"2.0"},defaultScene:null,accessors:[],animations:[],buffers:[],cameras:[],materials:[],meshes:[],nodes:[],scenes:[],skins:[],textures:[]})}constructor(t){super(t),this.h=new Set,t.addEventListener("node:create",t=>{this.l(t.target)})}clone(){throw new Error("Root cannot be cloned.")}copy(t,e=$){if(e===$)throw new Error("Root cannot be copied.");this.set("asset",ht({},t.get("asset"))),this.setName(t.getName()),this.setExtras(ht({},t.getExtras())),this.setDefaultScene(t.getDefaultScene()?e(t.getDefaultScene()):null);for(const r of t.listRefMapKeys("extensions")){const s=t.getExtension(r);this.setExtension(r,e(s))}return this}l(t){return t instanceof lt?this.addRef("scenes",t):t instanceof at?this.addRef("nodes",t):t instanceof Q?this.addRef("cameras",t):t instanceof ft?this.addRef("skins",t):t instanceof ot?this.addRef("meshes",t):t instanceof it?this.addRef("materials",t):t instanceof dt?this.addRef("textures",t):t instanceof H?this.addRef("animations",t):t instanceof W?this.addRef("accessors",t):t instanceof K&&this.addRef("buffers",t),this}getAsset(){return this.get("asset")}listExtensionsUsed(){return Array.from(this.h)}listExtensionsRequired(){return this.listExtensionsUsed().filter(t=>t.isRequired())}g(t){return this.h.add(t),this}p(t){return this.h.delete(t),this}listScenes(){return this.listRefs("scenes")}setDefaultScene(t){return this.setRef("defaultScene",t)}getDefaultScene(){return this.getRef("defaultScene")}listNodes(){return this.listRefs("nodes")}listCameras(){return this.listRefs("cameras")}listSkins(){return this.listRefs("skins")}listMeshes(){return this.listRefs("meshes")}listMaterials(){return this.listRefs("materials")}listTextures(){return this.listRefs("textures")}listAnimations(){return this.listRefs("animations")}listAccessors(){return this.listRefs("accessors")}listBuffers(){return this.listRefs("buffers")}}class pt{constructor(){this.m=new a,this.T=new gt(this.m),this.v=C.DEFAULT_INSTANCE}getRoot(){return this.T}getGraph(){return this.m}getLogger(){return this.v}setLogger(t){return this.v=t,this}clone(){return(new pt).setLogger(this.v).merge(this)}merge(t){for(const e of t.getRoot().listExtensionsUsed()){const t=this.createExtension(e.constructor);e.isRequired()&&t.setRequired(!0)}const e=new Set,r=new Map;e.add(t.T),r.set(t.T,this.T);for(const s of t.m.listEdges())for(const t of[s.getParent(),s.getChild()]){if(e.has(t))continue;let s;s=t.propertyType===p.TEXTURE_INFO?t:new(0,t.constructor)(this.m),r.set(t,s),e.add(t)}const s=t=>{const e=r.get(t);if(!e)throw new Error("Could resolve property.");return e};for(const t of e){const e=r.get(t);if(!e)throw new Error("Could resolve property.");e.copy(t,s)}return this}async transform(...t){const e=t.map(t=>t.name);for(const r of t)await r(this,{stack:e});return this}createExtension(t){const e=t.EXTENSION_NAME;return this.getRoot().listExtensionsUsed().find(t=>t.extensionName===e)||new t(this)}createScene(t=""){return new lt(this.m,t)}createNode(t=""){return new at(this.m,t)}createCamera(t=""){return new Q(this.m,t)}createSkin(t=""){return new ft(this.m,t)}createMesh(t=""){return new ot(this.m,t)}createPrimitive(){return new ut(this.m)}createPrimitiveTarget(t=""){return new ct(this.m,t)}createMaterial(t=""){return new it(this.m,t)}createTexture(t=""){return new dt(this.m,t)}createAnimation(t=""){return new H(this.m,t)}createAnimationChannel(t=""){return new Y(this.m,t)}createAnimationSampler(t=""){return new Z(this.m,t)}createAccessor(t="",e=null){return e||(e=this.getRoot().listBuffers()[0]),new W(this.m,t).setBuffer(e)}createBuffer(t=""){return new K(this.m,t)}}class mt{constructor(t){this.extensionName="",this.prereadTypes=[],this.prewriteTypes=[],this.readDependencies=[],this.writeDependencies=[],this.document=void 0,this.required=!1,this.properties=new Set,this.S=void 0,this.document=t,t.getRoot().g(this),this.S=t=>{const e=t,r=e.target;r instanceof X&&r.extensionName===this.extensionName&&("node:create"===e.type&&this.M(r),"node:dispose"===e.type&&this.I(r))};const e=t.getGraph();e.addEventListener("node:create",this.S),e.addEventListener("node:dispose",this.S)}dispose(){this.document.getRoot().p(this);const t=this.document.getGraph();t.removeEventListener("node:create",this.S),t.removeEventListener("node:dispose",this.S);for(const t of this.properties)t.dispose()}static register(){}isRequired(){return this.required}setRequired(t){return this.required=t,this}M(t){return this.properties.add(t),this}I(t){return this.properties.delete(t),this}install(t,e){return this}preread(t,e){return this}prewrite(t,e){return this}}mt.EXTENSION_NAME=void 0;class wt{constructor(t){this.jsonDoc=void 0,this.buffers=[],this.bufferViews=[],this.bufferViewBuffers=[],this.accessors=[],this.textures=[],this.textureInfos=new Map,this.materials=[],this.meshes=[],this.cameras=[],this.nodes=[],this.skins=[],this.animations=[],this.scenes=[],this.jsonDoc=t}setTextureInfo(t,e){this.textureInfos.set(t,e),void 0!==e.texCoord&&t.setTexCoord(e.texCoord);const r=this.jsonDoc.json.textures[e.index];if(void 0===r.sampler)return;const s=this.jsonDoc.json.samplers[r.sampler];void 0!==s.magFilter&&t.setMagFilter(s.magFilter),void 0!==s.minFilter&&t.setMinFilter(s.minFilter),void 0!==s.wrapS&&t.setWrapS(s.wrapS),void 0!==s.wrapT&&t.setWrapT(s.wrapT)}}const yt={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},Tt={logger:C.DEFAULT_INSTANCE,extensions:[],dependencies:{}};function vt(t,e){const r=e.bufferViews[t.bufferView],s=e.jsonDoc.json.bufferViews[t.bufferView],n=yt[t.componentType],i=W.getElementSize(t.type),o=n.BYTES_PER_ELEMENT;if(void 0!==s.byteStride&&s.byteStride!==i*o)return function(t,e){const r=e.bufferViews[t.bufferView],s=e.jsonDoc.json.bufferViews[t.bufferView],n=yt[t.componentType],i=W.getElementSize(t.type),o=n.BYTES_PER_ELEMENT,a=t.byteOffset||0,u=new n(t.count*i),c=new DataView(r.buffer,r.byteOffset,r.byteLength),h=s.byteStride;for(let e=0;e<t.count;e++)for(let r=0;r<i;r++){const s=a+e*h+r*o;let n;switch(t.componentType){case W.ComponentType.FLOAT:n=c.getFloat32(s,!0);break;case W.ComponentType.UNSIGNED_INT:n=c.getUint32(s,!0);break;case W.ComponentType.UNSIGNED_SHORT:n=c.getUint16(s,!0);break;case W.ComponentType.UNSIGNED_BYTE:n=c.getUint8(s);break;case W.ComponentType.SHORT:n=c.getInt16(s,!0);break;case W.ComponentType.BYTE:n=c.getInt8(s);break;default:throw new Error(`Unexpected componentType "${t.componentType}".`)}u[e*i+r]=n}return u}(t,e);const a=r.byteOffset+(t.byteOffset||0);return new n(r.buffer.slice(a,a+t.count*i*o))}var xt;!function(t){t[t.ARRAY_BUFFER=34962]="ARRAY_BUFFER",t[t.ELEMENT_ARRAY_BUFFER=34963]="ELEMENT_ARRAY_BUFFER"}(xt||(xt={}));class bt{constructor(t,e,r){this.N=void 0,this.jsonDoc=void 0,this.options=void 0,this.accessorIndexMap=new Map,this.animationIndexMap=new Map,this.bufferIndexMap=new Map,this.cameraIndexMap=new Map,this.skinIndexMap=new Map,this.materialIndexMap=new Map,this.meshIndexMap=new Map,this.nodeIndexMap=new Map,this.imageIndexMap=new Map,this.textureDefIndexMap=new Map,this.textureInfoDefMap=new Map,this.samplerDefIndexMap=new Map,this.sceneIndexMap=new Map,this.imageBufferViews=[],this.otherBufferViews=new Map,this.otherBufferViewsIndexMap=new Map,this.extensionData={},this.bufferURIGenerator=void 0,this.imageURIGenerator=void 0,this.logger=void 0,this.O=new Map,this.accessorUsageGroupedByParent=new Set(["ARRAY_BUFFER"]),this.accessorParents=new Map,this.N=t,this.jsonDoc=e,this.options=r;const s=t.getRoot(),n=s.listBuffers().length,i=s.listTextures().length;this.bufferURIGenerator=new At(n>1,r.basename),this.imageURIGenerator=new At(i>1,r.basename),this.logger=t.getLogger()}createTextureInfoDef(t,e){const r={magFilter:e.getMagFilter()||void 0,minFilter:e.getMinFilter()||void 0,wrapS:e.getWrapS(),wrapT:e.getWrapT()},s=JSON.stringify(r);this.samplerDefIndexMap.has(s)||(this.samplerDefIndexMap.set(s,this.jsonDoc.json.samplers.length),this.jsonDoc.json.samplers.push(r));const n={source:this.imageIndexMap.get(t),sampler:this.samplerDefIndexMap.get(s)},i=JSON.stringify(n);this.textureDefIndexMap.has(i)||(this.textureDefIndexMap.set(i,this.jsonDoc.json.textures.length),this.jsonDoc.json.textures.push(n));const o={index:this.textureDefIndexMap.get(i)};return 0!==e.getTexCoord()&&(o.texCoord=e.getTexCoord()),this.textureInfoDefMap.set(e,o),o}createPropertyDef(t){const e={};return t.getName()&&(e.name=t.getName()),Object.keys(t.getExtras()).length>0&&(e.extras=t.getExtras()),e}createAccessorDef(t){const e=this.createPropertyDef(t);return e.type=t.getType(),e.componentType=t.getComponentType(),e.count=t.getCount(),this.N.getGraph().listParentEdges(t).some(t=>"attributes"===t.getName()&&"POSITION"===t.getAttributes().key||"input"===t.getName())&&(e.max=t.getMax([]).map(Math.fround),e.min=t.getMin([]).map(Math.fround)),t.getNormalized()&&(e.normalized=t.getNormalized()),e}createImageData(t,e,r){if(this.options.format===T.GLB)this.imageBufferViews.push(e),t.bufferView=this.jsonDoc.json.bufferViews.length,this.jsonDoc.json.bufferViews.push({buffer:0,byteOffset:-1,byteLength:e.byteLength});else{const s=I.mimeTypeToExtension(r.getMimeType());t.uri=this.imageURIGenerator.createURI(r,s),this.jsonDoc.resources[t.uri]=e}}getAccessorUsage(t){const e=this.O.get(t);if(e)return e;for(const e of this.N.getGraph().listParentEdges(t)){const{usage:t}=e.getAttributes();if(t)return t;e.getParent().propertyType!==p.ROOT&&this.N.getLogger().warn(`Missing attribute ".usage" on edge, "${e.getName()}".`)}return bt.BufferViewUsage.OTHER}addAccessorToUsageGroup(t,e){const r=this.O.get(t);if(r&&r!==e)throw new Error(`Accessor with usage "${r}" cannot be reused as "${e}".`);return this.O.set(t,e),this}listAccessorUsageGroups(){const t={};for(const[e,r]of Array.from(this.O.entries()))t[r]=t[r]||[],t[r].push(e);return t}}bt.BufferViewTarget=xt,bt.BufferViewUsage=w,bt.USAGE_TO_TARGET={[w.ARRAY_BUFFER]:xt.ARRAY_BUFFER,[w.ELEMENT_ARRAY_BUFFER]:xt.ELEMENT_ARRAY_BUFFER};class At{constructor(t,e){this.multiple=void 0,this.basename=void 0,this.counter=1,this.multiple=t,this.basename=e}createURI(t,e){return t.getURI()?t.getURI():this.multiple?`${this.basename}_${this.counter++}.${e}`:`${this.basename}.${e}`}}const{BufferViewUsage:Et}=bt;var St;!function(t){t[t.JSON=1313821514]="JSON",t[t.BIN=5130562]="BIN"}(St||(St={}));class Mt{constructor(){this.v=C.DEFAULT_INSTANCE,this.h=new Set,this.C={},this.F=m.INTERLEAVED,this.lastReadBytes=0,this.lastWriteBytes=0}setLogger(t){return this.v=t,this}registerExtensions(t){for(const e of t)this.h.add(e),e.register();return this}registerDependencies(t){return Object.assign(this.C,t),this}setVertexLayout(t){return this.F=t,this}async read(t){return await this.readJSON(await this.readAsJSON(t))}async readAsJSON(t){return t.match(/^data:application\/octet-stream;/)||"glb"===S.extension(t)?this.U(t):this.P(t)}async readJSON(t){return t=this.j(t),this.L(t),class{static read(t,e=Tt){const r=ht({},Tt,e),{json:s}=t,n=new pt;this.validate(t,r);const i=new wt(t),o=s.asset,a=n.getRoot().getAsset();o.copyright&&(a.copyright=o.copyright),o.extras&&(a.extras=o.extras),void 0!==s.extras&&n.getRoot().setExtras(ht({},s.extras));const u=s.extensionsUsed||[],c=s.extensionsRequired||[];for(const t of r.extensions)if(u.includes(t.EXTENSION_NAME)){const e=n.createExtension(t).setRequired(c.includes(t.EXTENSION_NAME));for(const t of e.readDependencies)e.install(t,r.dependencies[t])}const h=s.buffers||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.BUFFER)).forEach(t=>t.preread(i,p.BUFFER)),i.buffers=h.map(t=>{const e=n.createBuffer(t.name);return t.extras&&e.setExtras(t.extras),t.uri&&0!==t.uri.indexOf("__")&&e.setURI(t.uri),e}),i.bufferViewBuffers=(s.bufferViews||[]).map((e,r)=>{if(!i.bufferViews[r]){const s=t.json.buffers[e.buffer];i.bufferViews[r]=A.toView(s.uri?t.resources[s.uri]:t.resources["@glb.bin"],e.byteOffset||0,e.byteLength)}return i.buffers[e.buffer]}),i.accessors=(s.accessors||[]).map(t=>{const e=n.createAccessor(t.name,i.bufferViewBuffers[t.bufferView]).setType(t.type);if(t.extras&&e.setExtras(t.extras),void 0!==t.normalized&&e.setNormalized(t.normalized),void 0===t.bufferView&&!t.sparse)return e;let r;return r=void 0!==t.sparse?function(t,e){const r=yt[t.componentType],s=W.getElementSize(t.type);let n;n=void 0!==t.bufferView?vt(t,e):new r(t.count*s);const i=t.sparse,o=i.count,a=ht({},t,i.indices,{count:o,type:"SCALAR"}),u=ht({},t,i.values,{count:o}),c=vt(a,e),h=vt(u,e);for(let t=0;t<a.count;t++)for(let e=0;e<s;e++)n[c[t]*s+e]=h[t*s+e];return n}(t,i):vt(t,i),e.setArray(r),e});const l=s.images||[],f=s.textures||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.TEXTURE)).forEach(t=>t.preread(i,p.TEXTURE)),i.textures=l.map(e=>{const r=n.createTexture(e.name);if(e.extras&&r.setExtras(e.extras),void 0!==e.bufferView){const n=s.bufferViews[e.bufferView],i=t.json.buffers[n.buffer],o=n.byteOffset||0,a=(i.uri?t.resources[i.uri]:t.resources["@glb.bin"]).slice(o,o+n.byteLength);r.setImage(a)}else void 0!==e.uri&&(r.setImage(t.resources[e.uri]),0!==e.uri.indexOf("__")&&r.setURI(e.uri));if(void 0!==e.mimeType)r.setMimeType(e.mimeType);else if(e.uri){const t=S.extension(e.uri);r.setMimeType(I.extensionToMimeType(t))}return r}),i.materials=(s.materials||[]).map(t=>{const e=n.createMaterial(t.name);t.extras&&e.setExtras(t.extras),void 0!==t.alphaMode&&e.setAlphaMode(t.alphaMode),void 0!==t.alphaCutoff&&e.setAlphaCutoff(t.alphaCutoff),void 0!==t.doubleSided&&e.setDoubleSided(t.doubleSided);const r=t.pbrMetallicRoughness||{};if(void 0!==r.baseColorFactor&&e.setBaseColorFactor(r.baseColorFactor),void 0!==t.emissiveFactor&&e.setEmissiveFactor(t.emissiveFactor),void 0!==r.metallicFactor&&e.setMetallicFactor(r.metallicFactor),void 0!==r.roughnessFactor&&e.setRoughnessFactor(r.roughnessFactor),void 0!==r.baseColorTexture){const t=r.baseColorTexture;e.setBaseColorTexture(i.textures[f[t.index].source]),i.setTextureInfo(e.getBaseColorTextureInfo(),t)}if(void 0!==t.emissiveTexture){const r=t.emissiveTexture;e.setEmissiveTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getEmissiveTextureInfo(),r)}if(void 0!==t.normalTexture){const r=t.normalTexture;e.setNormalTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getNormalTextureInfo(),r),void 0!==t.normalTexture.scale&&e.setNormalScale(t.normalTexture.scale)}if(void 0!==t.occlusionTexture){const r=t.occlusionTexture;e.setOcclusionTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getOcclusionTextureInfo(),r),void 0!==t.occlusionTexture.strength&&e.setOcclusionStrength(t.occlusionTexture.strength)}if(void 0!==r.metallicRoughnessTexture){const t=r.metallicRoughnessTexture;e.setMetallicRoughnessTexture(i.textures[f[t.index].source]),i.setTextureInfo(e.getMetallicRoughnessTextureInfo(),t)}return e});const d=s.meshes||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.PRIMITIVE)).forEach(t=>t.preread(i,p.PRIMITIVE)),i.meshes=d.map(t=>{const e=n.createMesh(t.name);return t.extras&&e.setExtras(t.extras),void 0!==t.weights&&e.setWeights(t.weights),(t.primitives||[]).forEach(r=>{const s=n.createPrimitive();r.extras&&s.setExtras(r.extras),void 0!==r.material&&s.setMaterial(i.materials[r.material]),void 0!==r.mode&&s.setMode(r.mode);for(const[t,e]of Object.entries(r.attributes||{}))s.setAttribute(t,i.accessors[e]);void 0!==r.indices&&s.setIndices(i.accessors[r.indices]);const o=t.extras&&t.extras.targetNames||[];(r.targets||[]).forEach((t,e)=>{const r=o[e]||e.toString(),a=n.createPrimitiveTarget(r);for(const[e,r]of Object.entries(t))a.setAttribute(e,i.accessors[r]);s.addTarget(a)}),e.addPrimitive(s)}),e}),i.cameras=(s.cameras||[]).map(t=>{const e=n.createCamera(t.name).setType(t.type);if(t.extras&&e.setExtras(t.extras),t.type===Q.Type.PERSPECTIVE){const r=t.perspective;e.setYFov(r.yfov),e.setZNear(r.znear),void 0!==r.zfar&&e.setZFar(r.zfar),void 0!==r.aspectRatio&&e.setAspectRatio(r.aspectRatio)}else{const r=t.orthographic;e.setZNear(r.znear).setZFar(r.zfar).setXMag(r.xmag).setYMag(r.ymag)}return e});const g=s.nodes||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.NODE)).forEach(t=>t.preread(i,p.NODE)),i.nodes=g.map(t=>{const e=n.createNode(t.name);if(t.extras&&e.setExtras(t.extras),void 0!==t.translation&&e.setTranslation(t.translation),void 0!==t.rotation&&e.setRotation(t.rotation),void 0!==t.scale&&e.setScale(t.scale),void 0!==t.matrix){const r=[0,0,0],s=[0,0,0,1],n=[1,1,1];F.decompose(t.matrix,r,s,n),e.setTranslation(r),e.setRotation(s),e.setScale(n)}return void 0!==t.weights&&e.setWeights(t.weights),e}),i.skins=(s.skins||[]).map(t=>{const e=n.createSkin(t.name);t.extras&&e.setExtras(t.extras),void 0!==t.inverseBindMatrices&&e.setInverseBindMatrices(i.accessors[t.inverseBindMatrices]),void 0!==t.skeleton&&e.setSkeleton(i.nodes[t.skeleton]);for(const r of t.joints)e.addJoint(i.nodes[r]);return e}),g.map((t,e)=>{const r=i.nodes[e];(t.children||[]).forEach(t=>r.addChild(i.nodes[t])),void 0!==t.mesh&&r.setMesh(i.meshes[t.mesh]),void 0!==t.camera&&r.setCamera(i.cameras[t.camera]),void 0!==t.skin&&r.setSkin(i.skins[t.skin])}),i.animations=(s.animations||[]).map(t=>{const e=n.createAnimation(t.name);t.extras&&e.setExtras(t.extras);const r=(t.samplers||[]).map(t=>{const r=n.createAnimationSampler().setInput(i.accessors[t.input]).setOutput(i.accessors[t.output]).setInterpolation(t.interpolation||Z.Interpolation.LINEAR);return t.extras&&r.setExtras(t.extras),e.addSampler(r),r});return(t.channels||[]).forEach(t=>{const s=n.createAnimationChannel().setSampler(r[t.sampler]).setTargetNode(i.nodes[t.target.node]).setTargetPath(t.target.path);t.extras&&s.setExtras(t.extras),e.addChannel(s)}),e});const m=s.scenes||[];return n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.SCENE)).forEach(t=>t.preread(i,p.SCENE)),i.scenes=m.map(t=>{const e=n.createScene(t.name);return t.extras&&e.setExtras(t.extras),(t.nodes||[]).map(t=>i.nodes[t]).forEach(t=>e.addChild(t)),e}),void 0!==s.scene&&n.getRoot().setDefaultScene(i.scenes[s.scene]),n.getRoot().listExtensionsUsed().forEach(t=>t.read(i)),n}static validate(t,e){const r=t.json;if("2.0"!==r.asset.version)throw new Error(`Unsupported glTF version, "${r.asset.version}".`);if(r.extensionsRequired)for(const t of r.extensionsRequired)if(!e.extensions.find(e=>e.EXTENSION_NAME===t))throw new Error(`Missing required extension, "${t}".`);if(r.extensionsUsed)for(const t of r.extensionsUsed)e.extensions.find(e=>e.EXTENSION_NAME===t)||e.logger.warn(`Missing optional extension, "${t}".`)}}.read(t,{extensions:Array.from(this.h),dependencies:this.C,logger:this.v})}async binaryToJSON(t){const e=this._(A.assertView(t));this.L(e);const r=e.json;if(r.buffers&&r.buffers.some(t=>function(t,e){return void 0!==e.uri&&!(e.uri in t.resources)}(e,t)))throw new Error("Cannot resolve external buffers with binaryToJSON().");if(r.images&&r.images.some(t=>function(t,e){return void 0!==e.uri&&!(e.uri in t.resources)&&void 0===e.bufferView}(e,t)))throw new Error("Cannot resolve external images with binaryToJSON().");return e}async readBinary(t){return this.readJSON(await this.binaryToJSON(A.assertView(t)))}async writeJSON(t,e={}){if(e.format===T.GLB&&t.getRoot().listBuffers().length>1)throw new Error("GLB must have 0–1 buffers.");return class{static write(t,e){const r=t.getRoot(),s={asset:ht({generator:"glTF-Transform v2.0.5"},r.getAsset()),extras:ht({},r.getExtras())},n={json:s,resources:{}},i=new bt(t,n,e),o=e.logger||C.DEFAULT_INSTANCE,a=new Set(e.extensions.map(t=>t.EXTENSION_NAME)),u=t.getRoot().listExtensionsUsed().filter(t=>a.has(t.extensionName)),c=t.getRoot().listExtensionsRequired().filter(t=>a.has(t.extensionName));u.length<t.getRoot().listExtensionsUsed().length&&o.debug("Some extensions were not registered for I/O, and will not be written.");for(const t of u)for(const r of t.writeDependencies)t.install(r,e.dependencies[r]);function h(t,e,r,n){const o=[];let a=0;for(const e of t){const t=i.createAccessorDef(e);t.bufferView=s.bufferViews.length;const r=e.getArray(),n=A.pad(A.toView(r));t.byteOffset=a,a+=n.byteLength,o.push(n),i.accessorIndexMap.set(e,s.accessors.length),s.accessors.push(t)}const u={buffer:e,byteOffset:r,byteLength:A.concat(o).byteLength};return n&&(u.target=n),s.bufferViews.push(u),{buffers:o,byteLength:a}}function l(t,e,r){const n=t[0].getCount();let o=0;for(const e of t){const t=i.createAccessorDef(e);t.bufferView=s.bufferViews.length,t.byteOffset=o;const r=e.getElementSize(),n=e.getComponentSize();o+=A.padNumber(r*n),i.accessorIndexMap.set(e,s.accessors.length),s.accessors.push(t)}const a=n*o,u=new ArrayBuffer(a),c=new DataView(u);for(let e=0;e<n;e++){let r=0;for(const s of t){const t=s.getElementSize(),n=s.getComponentSize(),i=s.getComponentType(),a=s.getArray();for(let s=0;s<t;s++){const u=e*o+r+s*n,h=a[e*t+s];switch(i){case W.ComponentType.FLOAT:c.setFloat32(u,h,!0);break;case W.ComponentType.BYTE:c.setInt8(u,h);break;case W.ComponentType.SHORT:c.setInt16(u,h,!0);break;case W.ComponentType.UNSIGNED_BYTE:c.setUint8(u,h);break;case W.ComponentType.UNSIGNED_SHORT:c.setUint16(u,h,!0);break;case W.ComponentType.UNSIGNED_INT:c.setUint32(u,h,!0);break;default:throw new Error("Unexpected component type: "+i)}}r+=A.padNumber(t*n)}}return s.bufferViews.push({buffer:e,byteOffset:r,byteLength:a,byteStride:o,target:bt.BufferViewTarget.ARRAY_BUFFER}),{byteLength:a,buffers:[new Uint8Array(u)]}}const f=new Map;for(const e of t.getGraph().listEdges()){if(e.getParent()===r)continue;const t=e.getChild();if(t instanceof W){const r=f.get(t)||[];r.push(e),f.set(t,r)}}if(s.accessors=[],s.bufferViews=[],s.samplers=[],s.textures=[],s.images=r.listTextures().map((t,e)=>{const r=i.createPropertyDef(t);t.getMimeType()&&(r.mimeType=t.getMimeType());const s=t.getImage();return s&&i.createImageData(r,s,t),i.imageIndexMap.set(t,e),r}),u.filter(t=>t.prewriteTypes.includes(p.ACCESSOR)).forEach(t=>t.prewrite(i,p.ACCESSOR)),r.listAccessors().forEach(t=>{const e=i.accessorUsageGroupedByParent,r=i.accessorParents;if(i.accessorIndexMap.has(t))return;const s=f.get(t)||[],n=i.getAccessorUsage(t);if(i.addAccessorToUsageGroup(t,n),e.has(n)){const e=s[0].getParent(),n=r.get(e)||new Set;n.add(t),r.set(e,n)}}),u.filter(t=>t.prewriteTypes.includes(p.BUFFER)).forEach(t=>t.prewrite(i,p.BUFFER)),(r.listAccessors().length>0||r.listTextures().length>0||i.otherBufferViews.size>0)&&0===r.listBuffers().length)throw new Error("Buffer required for Document resources, but none was found.");s.buffers=[],r.listBuffers().forEach((t,r)=>{const o=i.createPropertyDef(t),a=i.accessorUsageGroupedByParent,u=i.accessorParents,c=t.listParents().filter(t=>t instanceof W),f=new Set(c),d=[],g=s.buffers.length;let p=0;const w=i.listAccessorUsageGroups();for(const t in w)if(a.has(t))for(const r of Array.from(u.values())){const s=Array.from(r).filter(t=>f.has(t)).filter(e=>i.getAccessorUsage(e)===t);if(s.length)if(t!==Et.ARRAY_BUFFER||e.vertexLayout===m.INTERLEAVED){const e=t===Et.ARRAY_BUFFER?l(s,g,p):h(s,g,p);p+=e.byteLength,d.push(...e.buffers)}else for(const t of s){const e=l([t],g,p);p+=e.byteLength,d.push(...e.buffers)}}else{const e=w[t].filter(t=>f.has(t));if(!e.length)continue;const r=h(e,g,p,t===Et.ELEMENT_ARRAY_BUFFER?bt.BufferViewTarget.ELEMENT_ARRAY_BUFFER:void 0);p+=r.byteLength,d.push(...r.buffers)}if(i.imageBufferViews.length&&0===r)for(let t=0;t<i.imageBufferViews.length;t++)if(s.bufferViews[s.images[t].bufferView].byteOffset=p,p+=i.imageBufferViews[t].byteLength,d.push(i.imageBufferViews[t]),p%8){const t=8-p%8;p+=t,d.push(new Uint8Array(t))}if(i.otherBufferViews.has(t))for(const e of i.otherBufferViews.get(t))s.bufferViews.push({buffer:g,byteOffset:p,byteLength:e.byteLength}),i.otherBufferViewsIndexMap.set(e,s.bufferViews.length-1),p+=e.byteLength,d.push(e);if(p){let r;e.format===T.GLB?r="@glb.bin":(r=i.bufferURIGenerator.createURI(t,"bin"),o.uri=r),o.byteLength=p,n.resources[r]=A.concat(d)}s.buffers.push(o),i.bufferIndexMap.set(t,r)}),r.listAccessors().find(t=>!t.getBuffer())&&o.warn("Skipped writing one or more Accessors: no Buffer assigned."),s.materials=r.listMaterials().map((t,e)=>{const r=i.createPropertyDef(t);if(t.getAlphaMode()!==it.AlphaMode.OPAQUE&&(r.alphaMode=t.getAlphaMode()),t.getAlphaMode()===it.AlphaMode.MASK&&(r.alphaCutoff=t.getAlphaCutoff()),t.getDoubleSided()&&(r.doubleSided=!0),r.pbrMetallicRoughness={},F.eq(t.getBaseColorFactor(),[1,1,1,1])||(r.pbrMetallicRoughness.baseColorFactor=t.getBaseColorFactor()),F.eq(t.getEmissiveFactor(),[0,0,0])||(r.emissiveFactor=t.getEmissiveFactor()),1!==t.getRoughnessFactor()&&(r.pbrMetallicRoughness.roughnessFactor=t.getRoughnessFactor()),1!==t.getMetallicFactor()&&(r.pbrMetallicRoughness.metallicFactor=t.getMetallicFactor()),t.getBaseColorTexture()){const e=t.getBaseColorTexture(),s=t.getBaseColorTextureInfo();r.pbrMetallicRoughness.baseColorTexture=i.createTextureInfoDef(e,s)}if(t.getEmissiveTexture()){const e=t.getEmissiveTexture(),s=t.getEmissiveTextureInfo();r.emissiveTexture=i.createTextureInfoDef(e,s)}if(t.getNormalTexture()){const e=t.getNormalTexture(),s=t.getNormalTextureInfo(),n=i.createTextureInfoDef(e,s);1!==t.getNormalScale()&&(n.scale=t.getNormalScale()),r.normalTexture=n}if(t.getOcclusionTexture()){const e=t.getOcclusionTexture(),s=t.getOcclusionTextureInfo(),n=i.createTextureInfoDef(e,s);1!==t.getOcclusionStrength()&&(n.strength=t.getOcclusionStrength()),r.occlusionTexture=n}if(t.getMetallicRoughnessTexture()){const e=t.getMetallicRoughnessTexture(),s=t.getMetallicRoughnessTextureInfo();r.pbrMetallicRoughness.metallicRoughnessTexture=i.createTextureInfoDef(e,s)}return i.materialIndexMap.set(t,e),r}),s.meshes=r.listMeshes().map((t,e)=>{const r=i.createPropertyDef(t);let s=null;return r.primitives=t.listPrimitives().map(t=>{const e={attributes:{}};e.mode=t.getMode();const r=t.getMaterial();r&&(e.material=i.materialIndexMap.get(r)),Object.keys(t.getExtras()).length&&(e.extras=t.getExtras());const n=t.getIndices();n&&(e.indices=i.accessorIndexMap.get(n));for(const r of t.listSemantics())e.attributes[r]=i.accessorIndexMap.get(t.getAttribute(r));for(const r of t.listTargets()){const t={};for(const e of r.listSemantics())t[e]=i.accessorIndexMap.get(r.getAttribute(e));e.targets=e.targets||[],e.targets.push(t)}return t.listTargets().length&&!s&&(s=t.listTargets().map(t=>t.getName())),e}),t.getWeights().length&&(r.weights=t.getWeights()),s&&(r.extras=r.extras||{},r.extras.targetNames=s),i.meshIndexMap.set(t,e),r}),s.cameras=r.listCameras().map((t,e)=>{const r=i.createPropertyDef(t);if(r.type=t.getType(),r.type===Q.Type.PERSPECTIVE){r.perspective={znear:t.getZNear(),zfar:t.getZFar(),yfov:t.getYFov()};const e=t.getAspectRatio();null!==e&&(r.perspective.aspectRatio=e)}else r.orthographic={znear:t.getZNear(),zfar:t.getZFar(),xmag:t.getXMag(),ymag:t.getYMag()};return i.cameraIndexMap.set(t,e),r}),s.nodes=r.listNodes().map((t,e)=>{const r=i.createPropertyDef(t);return F.eq(t.getTranslation(),[0,0,0])||(r.translation=t.getTranslation()),F.eq(t.getRotation(),[0,0,0,1])||(r.rotation=t.getRotation()),F.eq(t.getScale(),[1,1,1])||(r.scale=t.getScale()),t.getWeights().length&&(r.weights=t.getWeights()),i.nodeIndexMap.set(t,e),r}),s.skins=r.listSkins().map((t,e)=>{const r=i.createPropertyDef(t),s=t.getInverseBindMatrices();s&&(r.inverseBindMatrices=i.accessorIndexMap.get(s));const n=t.getSkeleton();return n&&(r.skeleton=i.nodeIndexMap.get(n)),r.joints=t.listJoints().map(t=>i.nodeIndexMap.get(t)),i.skinIndexMap.set(t,e),r}),r.listNodes().forEach((t,e)=>{const r=s.nodes[e],n=t.getMesh();n&&(r.mesh=i.meshIndexMap.get(n));const o=t.getCamera();o&&(r.camera=i.cameraIndexMap.get(o));const a=t.getSkin();a&&(r.skin=i.skinIndexMap.get(a)),t.listChildren().length>0&&(r.children=t.listChildren().map(t=>i.nodeIndexMap.get(t)))}),s.animations=r.listAnimations().map((t,e)=>{const r=i.createPropertyDef(t),s=new Map;return r.samplers=t.listSamplers().map((t,e)=>{const r=i.createPropertyDef(t);return r.input=i.accessorIndexMap.get(t.getInput()),r.output=i.accessorIndexMap.get(t.getOutput()),r.interpolation=t.getInterpolation(),s.set(t,e),r}),r.channels=t.listChannels().map(t=>{const e=i.createPropertyDef(t);return e.sampler=s.get(t.getSampler()),e.target={node:i.nodeIndexMap.get(t.getTargetNode()),path:t.getTargetPath()},e}),i.animationIndexMap.set(t,e),r}),s.scenes=r.listScenes().map((t,e)=>{const r=i.createPropertyDef(t);return r.nodes=t.listChildren().map(t=>i.nodeIndexMap.get(t)),i.sceneIndexMap.set(t,e),r});const d=r.getDefaultScene();return d&&(s.scene=r.listScenes().indexOf(d)),s.extensionsUsed=u.map(t=>t.extensionName),s.extensionsRequired=c.map(t=>t.extensionName),u.forEach(t=>t.write(i)),function(t){const e=[];for(const r in t){const s=t[r];(Array.isArray(s)&&0===s.length||null===s||""===s||s&&"object"==typeof s&&0===Object.keys(s).length)&&e.push(r)}for(const r of e)delete t[r]}(s),n}}.write(t,{format:e.format||T.GLTF,basename:e.basename||"",logger:this.v,vertexLayout:this.F,dependencies:ht({},this.C),extensions:Array.from(this.h)})}async writeBinary(t){const{json:e,resources:r}=await this.writeJSON(t,{format:T.GLB}),s=new Uint32Array([1179937895,2,12]),n=JSON.stringify(e),i=A.pad(A.encodeText(n),32),o=A.toView(new Uint32Array([i.byteLength,1313821514])),a=A.concat([o,i]);s[s.length-1]+=a.byteLength;const u=Object.values(r)[0];if(!u||!u.byteLength)return A.concat([A.toView(s),a]);const c=A.pad(u,0),h=A.toView(new Uint32Array([c.byteLength,5130562])),l=A.concat([h,c]);return s[s.length-1]+=l.byteLength,A.concat([A.toView(s),a,l])}async P(t){this.lastReadBytes=0;const e=await this.readURI(t,"text");this.lastReadBytes+=e.length;const r={json:JSON.parse(e),resources:{}};return await this.D(r,this.dirname(t)),this.L(r),r}async U(t){const e=await this.readURI(t,"view");this.lastReadBytes=e.byteLength;const r=this._(e);return await this.D(r,this.dirname(t)),this.L(r),r}async D(t,e){var r=this;const s=[...t.json.images||[],...t.json.buffers||[]].map(async function(s){const n=s.uri;if(!n||n.match(/data:/))return Promise.resolve();t.resources[n]=await r.readURI(r.resolve(e,n),"view"),r.lastReadBytes+=t.resources[n].byteLength});await Promise.all(s)}L(t){function e(e){if(e.uri)if(e.uri in t.resources)A.assertView(t.resources[e.uri]);else if(e.uri.match(/data:/)){const r=`__${G()}.${S.extension(e.uri)}`;t.resources[r]=A.createBufferFromDataURI(e.uri),e.uri=r}}(t.json.images||[]).forEach(t=>{if(void 0===t.bufferView&&void 0===t.uri)throw new Error("Missing resource URI or buffer view.");e(t)}),(t.json.buffers||[]).forEach(e)}j(t){const{images:e,buffers:r}=t.json;return t={json:ht({},t.json),resources:ht({},t.resources)},e&&(t.json.images=e.map(t=>ht({},t))),r&&(t.json.buffers=r.map(t=>ht({},t))),t}_(t){const e=new Uint32Array(t.buffer,t.byteOffset,3);if(1179937895!==e[0])throw new Error("Invalid glTF asset.");if(2!==e[1])throw new Error(`Unsupported glTF binary version, "${e[1]}".`);const r=new Uint32Array(t.buffer,t.byteOffset+12,2);if(r[1]!==St.JSON)throw new Error("Missing required GLB JSON chunk.");const s=r[0],n=A.decodeText(A.toView(t,20,s)),i=JSON.parse(n),o=20+s;if(t.byteLength<=o)return{json:i,resources:{}};const a=new Uint32Array(t.buffer,t.byteOffset+o,2);if(a[1]!==St.BIN)throw new Error("Expected GLB BIN in second chunk.");return{json:i,resources:{"@glb.bin":A.toView(t,o+8,a[0])}}}}class It extends Mt{constructor(t=null,e=J.DEFAULT_INIT){super(),this.k=void 0,this.J=void 0,this.$=void 0,this.V=void 0,this.q=!1,this.k=require("fs").promises,this.J=require("path"),this.$=t,this.V=e}setAllowHTTP(t){if(t&&!this.$)throw new Error("NodeIO requires a Fetch API implementation for HTTP requests.");return this.q=t,this}async readURI(t,e){if(J.isAbsoluteURL(t)){if(!this.q||!this.$)throw new Error("Network request blocked. Allow HTTP requests explicitly, if needed.");const r=await this.$(t,this.V);switch(e){case"view":return new Uint8Array(await r.arrayBuffer());case"text":return r.text()}}else switch(e){case"view":return this.k.readFile(t);case"text":return this.k.readFile(t,"utf8")}}resolve(t,e){return J.isAbsoluteURL(t)||J.isAbsoluteURL(e)?J.resolve(t,e):this.J.resolve(t,e)}dirname(t){return J.isAbsoluteURL(t)?J.dirname(t):this.J.dirname(t)}async write(t,e){const r=!!t.match(/\.glb$/);await(r?this.W(t,e):this.H(t,e))}async H(t,e){var r=this;this.lastWriteBytes=0;const{json:s,resources:n}=await this.writeJSON(e,{format:T.GLTF,basename:S.basename(t)}),{k:i,J:o}=this,a=o.dirname(t),u=JSON.stringify(s,null,2);this.lastWriteBytes+=u.length,await i.writeFile(t,u);const c=Object.keys(n).map(async function(t){if(J.isAbsoluteURL(t)){if("bin"===S.extension(t))throw new Error(`Cannot write buffer to path "${t}".`);return}const e=Buffer.from(n[t]);await i.writeFile(o.join(a,t),e),r.lastWriteBytes+=e.byteLength});await Promise.all(c)}async W(t,e){const r=Buffer.from(await this.writeBinary(e));await this.k.writeFile(t,r),this.lastWriteBytes=r.byteLength}}class Rt extends Mt{constructor(t){super(),this.J=void 0,this.J=t}async readURI(t,e){switch(e){case"view":return Deno.readFile(t);case"text":return Deno.readTextFile(t)}}resolve(t,e){return this.J.resolve(t,e)}dirname(t){return this.J.dirname(t)}}class Nt extends Mt{constructor(t=J.DEFAULT_INIT){super(),this.V=void 0,this.V=t}async readURI(t,e){const r=await fetch(t,this.V);switch(e){case"view":return new Uint8Array(await r.arrayBuffer());case"text":return r.text()}}resolve(t,e){return J.resolve(t,e)}dirname(t){return J.dirname(t)}}export{W as Accessor,H as Animation,Y as AnimationChannel,Z as AnimationSampler,K as Buffer,A as BufferUtils,$ as COPY_IDENTITY,Q as Camera,E as ColorUtils,Rt as DenoIO,pt as Document,q as ExtensibleProperty,mt as Extension,X as ExtensionProperty,S as FileUtils,T as Format,g as GLB_BUFFER,I as ImageUtils,C as Logger,it as Material,F as MathUtils,ot as Mesh,at as Node,It as NodeIO,Mt as PlatformIO,ut as Primitive,ct as PrimitiveTarget,V as Property,p as PropertyType,wt as ReaderContext,gt as Root,lt as Scene,ft as Skin,dt as Texture,y as TextureChannel,tt as TextureInfo,d as VERSION,m as VertexLayout,Nt as WebIO,bt as WriterContext,v as bounds,G as uuid};
+import{GraphNode as t,$attributes as e,GraphEdge as r,$immutableKeys as s,isRef as n,isRefList as i,isRefMap as o,Graph as a}from"property-graph";export{Graph,GraphEdge}from"property-graph";import{transformMat4 as u,length as c}from"gl-matrix/vec3";import{determinant as h,getRotation as l,multiply as f}from"gl-matrix/mat4";const d="v2.1.0",g="@glb.bin";var p,m,w,y,T;function v(t){const e={min:[Infinity,Infinity,Infinity],max:[-Infinity,-Infinity,-Infinity]},r=t.propertyType===p.NODE?[t]:t.listChildren();for(const t of r)t.traverse(t=>{const r=t.getMesh();if(!r)return;const s=x(r,t.getWorldMatrix());b(s.min,e),b(s.max,e)});return e}function x(t,e){const r={min:[Infinity,Infinity,Infinity],max:[-Infinity,-Infinity,-Infinity]};for(const s of t.listPrimitives()){const t=s.getAttribute("POSITION");if(!t)continue;let n=[0,0,0],i=[0,0,0];for(let s=0;s<t.getCount();s++)n=t.getElement(s,n),i=u(i,n,e),b(i,r)}return r}function b(t,e){for(let r=0;r<3;r++)e.min[r]=Math.min(t[r],e.min[r]),e.max[r]=Math.max(t[r],e.max[r])}!function(t){t.ACCESSOR="Accessor",t.ANIMATION="Animation",t.ANIMATION_CHANNEL="AnimationChannel",t.ANIMATION_SAMPLER="AnimationSampler",t.BUFFER="Buffer",t.CAMERA="Camera",t.MATERIAL="Material",t.MESH="Mesh",t.PRIMITIVE="Primitive",t.PRIMITIVE_TARGET="PrimitiveTarget",t.NODE="Node",t.ROOT="Root",t.SCENE="Scene",t.SKIN="Skin",t.TEXTURE="Texture",t.TEXTURE_INFO="TextureInfo"}(p||(p={})),function(t){t.INTERLEAVED="interleaved",t.SEPARATE="separate"}(m||(m={})),function(t){t.ARRAY_BUFFER="ARRAY_BUFFER",t.ELEMENT_ARRAY_BUFFER="ELEMENT_ARRAY_BUFFER",t.INVERSE_BIND_MATRICES="INVERSE_BIND_MATRICES",t.OTHER="OTHER"}(w||(w={})),function(t){t[t.R=4096]="R",t[t.G=256]="G",t[t.B=16]="B",t[t.A=1]="A"}(y||(y={})),function(t){t.GLTF="GLTF",t.GLB="GLB"}(T||(T={}));class A{static createBufferFromDataURI(t){if("undefined"==typeof Buffer){const e=atob(t.split(",")[1]),r=new Uint8Array(e.length);for(let t=0;t<e.length;t++)r[t]=e.charCodeAt(t);return r}{const e=t.split(",")[1],r=t.indexOf("base64")>=0;return Buffer.from(e,r?"base64":"utf8")}}static encodeText(t){return"undefined"!=typeof TextEncoder?(new TextEncoder).encode(t):Buffer.from(t)}static decodeText(t){return"undefined"!=typeof TextDecoder?(new TextDecoder).decode(t):Buffer.from(t).toString("utf8")}static concat(t){let e=0;for(const r of t)e+=r.byteLength;const r=new Uint8Array(e);let s=0;for(const e of t)r.set(e,s),s+=e.byteLength;return r}static pad(t,e=0){const r=this.padNumber(t.byteLength);if(r===t.byteLength)return t;const s=new Uint8Array(r);if(s.set(t),0!==e)for(let n=t.byteLength;n<r;n++)s[n]=e;return s}static padNumber(t){return 4*Math.ceil(t/4)}static equals(t,e){if(t===e)return!0;if(t.byteLength!==e.byteLength)return!1;let r=t.byteLength;for(;r--;)if(t[r]!==e[r])return!1;return!0}static toView(t,e=0,r=Infinity){return new Uint8Array(t.buffer,t.byteOffset+e,Math.min(t.byteLength,r))}static assertView(t){if(t&&!ArrayBuffer.isView(t))throw new Error(`Method requires Uint8Array parameter; received "${typeof t}".`);return t}}class E{static hexToFactor(t,e){t=Math.floor(t);const r=e;return r[0]=(t>>16&255)/255,r[1]=(t>>8&255)/255,r[2]=(255&t)/255,this.convertSRGBToLinear(e,e)}static factorToHex(t){const e=[...t],[r,s,n]=this.convertLinearToSRGB(t,e);return 255*r<<16^255*s<<8^255*n<<0}static convertSRGBToLinear(t,e){const r=t,s=e;for(let t=0;t<3;t++)s[t]=r[t]<.04045?.0773993808*r[t]:Math.pow(.9478672986*r[t]+.0521327014,2.4);return e}static convertLinearToSRGB(t,e){const r=t,s=e;for(let t=0;t<3;t++)s[t]=r[t]<.0031308?12.92*r[t]:1.055*Math.pow(r[t],.41666)-.055;return e}}class S{match(t){return t.length>=8&&137===t[0]&&80===t[1]&&78===t[2]&&71===t[3]&&13===t[4]&&10===t[5]&&26===t[6]&&10===t[7]}getSize(t){const e=new DataView(t.buffer,t.byteOffset);return A.decodeText(t.slice(12,16))===S.PNG_FRIED_CHUNK_NAME?[e.getUint32(32,!1),e.getUint32(36,!1)]:[e.getUint32(16,!1),e.getUint32(20,!1)]}getChannels(t){return 4}}S.PNG_FRIED_CHUNK_NAME="CgBI";class M{static registerFormat(t,e){this.impls[t]=e}static getMimeType(t){for(const e in this.impls)if(this.impls[e].match(t))return e;return null}static getSize(t,e){return this.impls[e]?this.impls[e].getSize(t):null}static getChannels(t,e){return this.impls[e]?this.impls[e].getChannels(t):null}static getMemSize(t,e){if(!this.impls[e])return null;if(this.impls[e].getGPUByteLength)return this.impls[e].getGPUByteLength(t);let r=0;const s=this.getSize(t,e);if(!s)return null;for(;s[0]>1||s[1]>1;)r+=s[0]*s[1]*4,s[0]=Math.max(Math.floor(s[0]/2),1),s[1]=Math.max(Math.floor(s[1]/2),1);return r+=4,r}static mimeTypeToExtension(t){return"image/jpeg"===t?"jpg":t.split("/").pop()}static extensionToMimeType(t){return"jpg"===t?"image/jpeg":`image/${t}`}}function I(t,e){if(e>t.byteLength)throw new TypeError("Corrupt JPG, exceeded buffer limits");if(255!==t.getUint8(e))throw new TypeError("Invalid JPG, marker table corrupted");return t}M.impls={"image/jpeg":new class{match(t){return t.length>=3&&255===t[0]&&216===t[1]&&255===t[2]}getSize(t){let e,r,s=new DataView(t.buffer,t.byteOffset+4);for(;s.byteLength;){if(e=s.getUint16(0,!1),I(s,e),r=s.getUint8(e+1),192===r||193===r||194===r)return[s.getUint16(e+7,!1),s.getUint16(e+5,!1)];s=new DataView(t.buffer,s.byteOffset+e+2)}throw new TypeError("Invalid JPG, no size found")}getChannels(t){return 3}},"image/png":new S};class R{static basename(t){const e=t.split(/[\\/]/).pop();return e.substring(0,e.lastIndexOf("."))}static extension(t){if(t.startsWith("data:image/")){const e=t.match(/data:(image\/\w+)/)[1];return M.mimeTypeToExtension(e)}return t.startsWith("data:model/gltf+json")?"gltf":t.startsWith("data:model/gltf-binary")?"glb":t.startsWith("data:application/")?"bin":t.split(/[\\/]/).pop().split(/[.]/).pop()}}function N(t){return"[object Object]"===Object.prototype.toString.call(t)}function O(t){if(!1===N(t))return!1;const e=t.constructor;if(void 0===e)return!0;const r=e.prototype;return!1!==N(r)&&!1!==Object.prototype.hasOwnProperty.call(r,"isPrototypeOf")}class C{constructor(t){this.verbosity=void 0,this.verbosity=t}debug(t){this.verbosity<=C.Verbosity.DEBUG&&console.debug(t)}info(t){this.verbosity<=C.Verbosity.INFO&&console.info(t)}warn(t){this.verbosity<=C.Verbosity.WARN&&console.warn(t)}error(t){this.verbosity<=C.Verbosity.ERROR&&console.error(t)}}C.Verbosity={SILENT:4,ERROR:3,WARN:2,INFO:1,DEBUG:0},C.DEFAULT_INSTANCE=new C(C.Verbosity.INFO);class F{static identity(t){return t}static eq(t,e){if(t.length!==e.length)return!1;for(let r=0;r<t.length;r++)if(Math.abs(t[r]-e[r])>1e-5)return!1;return!0}static denormalize(t,e){switch(e){case 5126:return t;case 5123:return t/65535;case 5121:return t/255;case 5122:return Math.max(t/32767,-1);case 5120:return Math.max(t/127,-1);default:throw new Error("Invalid component type.")}}static normalize(t,e){switch(e){case 5126:return t;case 5123:return Math.round(65535*t);case 5121:return Math.round(255*t);case 5122:return Math.round(32767*t);case 5120:return Math.round(127*t);default:throw new Error("Invalid component type.")}}static decompose(t,e,r,s){let n=c([t[0],t[1],t[2]]);const i=c([t[4],t[5],t[6]]),o=c([t[8],t[9],t[10]]);h(t)<0&&(n=-n),e[0]=t[12],e[1]=t[13],e[2]=t[14];const a=t.slice(),u=1/n,f=1/i,d=1/o;a[0]*=u,a[1]*=u,a[2]*=u,a[4]*=f,a[5]*=f,a[6]*=f,a[8]*=d,a[9]*=d,a[10]*=d,l(r,a),s[0]=n,s[1]=i,s[2]=o}static compose(t,e,r,s){const n=s,i=e[0],o=e[1],a=e[2],u=e[3],c=i+i,h=o+o,l=a+a,f=i*c,d=i*h,g=i*l,p=o*h,m=o*l,w=a*l,y=u*c,T=u*h,v=u*l,x=r[0],b=r[1],A=r[2];return n[0]=(1-(p+w))*x,n[1]=(d+v)*x,n[2]=(g-T)*x,n[3]=0,n[4]=(d-v)*b,n[5]=(1-(f+w))*b,n[6]=(m+y)*b,n[7]=0,n[8]=(g+T)*A,n[9]=(m-y)*A,n[10]=(1-(f+p))*A,n[11]=0,n[12]=t[0],n[13]=t[1],n[14]=t[2],n[15]=1,n}}function B(t,e){if(!!t!=!!e)return!1;const r=t.getChild(),s=e.getChild();return r===s||r.equals(s)}function U(t,e){if(!!t!=!!e)return!1;if(t.length!==e.length)return!1;for(let r=0;r<t.length;r++){const s=t[r],n=e[r];if(s.getChild()!==n.getChild()&&!s.getChild().equals(n.getChild()))return!1}return!0}function P(t,e){if(!!t!=!!e)return!1;const r=Object.keys(t),s=Object.keys(e);if(r.length!==s.length)return!1;for(const r in t){const s=t[r],n=e[r];if(!!s!=!!n)return!1;const i=s.getChild(),o=n.getChild();if(i!==o&&!i.equals(o))return!1}return!0}function j(t,e){if(t===e)return!0;if(!!t!=!!e||!t||!e)return!1;if(t.length!==e.length)return!1;for(let r=0;r<t.length;r++)if(t[r]!==e[r])return!1;return!0}function L(t,e){if(t===e)return!0;if(!!t!=!!e)return!1;if(!O(t)||!O(e))return t===e;const r=t,s=e;let n,i=0,o=0;for(n in r)i++;for(n in s)o++;if(i!==o)return!1;for(n in r){const t=r[n],e=s[n];if(_(t)&&_(e)){if(!j(t,e))return!1}else if(O(t)&&O(e)){if(!L(t,e))return!1}else if(t!==e)return!1}return!0}function _(t){return Array.isArray(t)||ArrayBuffer.isView(t)}const D="23456789abdegjkmnpqrvwxyzABDEGJKMNPQRVWXYZ",k=new Set,z=function(){let t="";for(let e=0;e<6;e++)t+=D.charAt(Math.floor(Math.random()*D.length));return t},G=function(){for(let t=0;t<999;t++){const t=z();if(!k.has(t))return k.add(t),t}return""};class J{static dirname(t){const e=t.lastIndexOf("/");return-1===e?"./":t.substring(0,e+1)}static basename(t){return R.basename(new URL(t,"https://null.example").pathname)}static extension(t){return R.extension(new URL(t,"https://null.example").pathname)}static resolve(t,e){if(!this.isRelativePath(e))return e;const r=t.split("/"),s=e.split("/");r.pop();for(let t=0;t<s.length;t++)"."!==s[t]&&(".."===s[t]?r.pop():r.push(s[t]));return r.join("/")}static isAbsoluteURL(t){return this.PROTOCOL_REGEXP.test(t)}static isRelativePath(t){return!/^(?:[a-zA-Z]+:)?\//.test(t)}}J.DEFAULT_INIT={},J.PROTOCOL_REGEXP=/^[a-zA-Z]+:\/\//;const $=t=>t;class V extends t{constructor(t,r=""){super(t),this[e].name=r,this.init(),this.dispatchEvent({type:"create"})}getDefaults(){return Object.assign(super.getDefaults(),{name:"",extras:{}})}getName(){return this.get("name")}setName(t){return this.set("name",t)}getExtras(){return this.get("extras")}setExtras(t){return this.set("extras",t)}clone(){return new(0,this.constructor)(this.graph).copy(this,$)}copy(t,n=$){for(const t in this[e]){const n=this[e][t];if(n instanceof r)this[s].has(t)||n.dispose();else if(Array.isArray(n)&&n[0]instanceof r)for(const t of n)t.dispose();else if(O(n)&&Object.values(n)[0]instanceof r)for(const t in n)n[t].dispose()}for(const i in t[e]){const o=this[e][i],a=t[e][i];if(a instanceof r)this[s].has(i)?o.getChild().copy(n(a.getChild()),n):this.setRef(i,n(a.getChild()),a.getAttributes());else if(Array.isArray(a)&&a[0]instanceof r)for(const t of a)this.addRef(i,n(t.getChild()),t.getAttributes());else if(O(a)&&Object.values(a)[0]instanceof r)for(const t in a){const e=a[t];this.setRefMap(i,t,n(e.getChild()),e.getAttributes())}else this[e][i]=O(a)?JSON.parse(JSON.stringify(a)):Array.isArray(a)||a instanceof ArrayBuffer||ArrayBuffer.isView(a)?a.slice():a}return this}equals(t){if(this===t)return!0;if(this.propertyType!==t.propertyType)return!1;for(const r in this[e]){const s=this[e][r],a=t[e][r];if(n(s)||n(a)){if(!B(s,a))return!1}else if(i(s)||i(a)){if(!U(s,a))return!1}else if(o(s)||o(a)){if(!P(s,a))return!1}else if(O(s)||O(a)){if(!L(s,a))return!1}else if(_(s)||_(a)){if(!j(s,a))return!1}else if(s!==a)return!1}return!0}detach(){return this.graph.disconnectParents(this,t=>"Root"!==t.propertyType),this}listParents(){return this.graph.listParents(this)}}class q extends V{getDefaults(){return Object.assign(super.getDefaults(),{extensions:{}})}getExtension(t){return this.getRefMap("extensions",t)}setExtension(t,e){return e&&e.t(this),this.setRefMap("extensions",t,e)}listExtensions(){return this.listRefMapValues("extensions")}}class W extends q{constructor(...t){super(...t),this.i=F.identity,this.o=F.identity}init(){this.propertyType=p.ACCESSOR}getDefaults(){return Object.assign(super.getDefaults(),{array:null,type:W.Type.SCALAR,componentType:W.ComponentType.FLOAT,normalized:!1,buffer:null})}copy(t,e=$){return super.copy(t,e),this.i=t.i,this.o=t.o,this}static getElementSize(t){switch(t){case W.Type.SCALAR:return 1;case W.Type.VEC2:return 2;case W.Type.VEC3:return 3;case W.Type.VEC4:case W.Type.MAT2:return 4;case W.Type.MAT3:return 9;case W.Type.MAT4:return 16;default:throw new Error("Unexpected type: "+t)}}static getComponentSize(t){switch(t){case W.ComponentType.BYTE:case W.ComponentType.UNSIGNED_BYTE:return 1;case W.ComponentType.SHORT:case W.ComponentType.UNSIGNED_SHORT:return 2;case W.ComponentType.UNSIGNED_INT:case W.ComponentType.FLOAT:return 4;default:throw new Error("Unexpected component type: "+t)}}getMinNormalized(t){const e=this.getElementSize();this.getMin(t);for(let r=0;r<e;r++)t[r]=this.o(t[r]);return t}getMin(t){const e=this.get("array"),r=this.getCount(),s=this.getElementSize();for(let e=0;e<s;e++)t[e]=Infinity;for(let n=0;n<r*s;n+=s)for(let r=0;r<s;r++){const s=e[n+r];Number.isFinite(s)&&(t[r]=Math.min(t[r],s))}return t}getMaxNormalized(t){const e=this.getElementSize();this.getMax(t);for(let r=0;r<e;r++)t[r]=this.o(t[r]);return t}getMax(t){const e=this.get("array"),r=this.getCount(),s=this.getElementSize();for(let e=0;e<s;e++)t[e]=-Infinity;for(let n=0;n<r*s;n+=s)for(let r=0;r<s;r++){const s=e[n+r];Number.isFinite(s)&&(t[r]=Math.max(t[r],s))}return t}getCount(){const t=this.get("array");return t?t.length/this.getElementSize():0}getType(){return this.get("type")}setType(t){return this.set("type",t)}getElementSize(){return W.getElementSize(this.get("type"))}getComponentSize(){return this.get("array").BYTES_PER_ELEMENT}getComponentType(){return this.get("componentType")}getNormalized(){return this.get("normalized")}setNormalized(t){return this.set("normalized",t),t?(this.o=t=>F.denormalize(t,this.get("componentType")),this.i=t=>F.normalize(t,this.get("componentType"))):(this.o=F.identity,this.i=F.identity),this}getScalar(t){const e=this.getElementSize();return this.o(this.get("array")[t*e])}setScalar(t,e){return this.get("array")[t*this.getElementSize()]=this.i(e),this}getElement(t,e){const r=this.getElementSize(),s=this.get("array");for(let n=0;n<r;n++)e[n]=this.o(s[t*r+n]);return e}setElement(t,e){const r=this.getElementSize(),s=this.get("array");for(let n=0;n<r;n++)s[t*r+n]=this.i(e[n]);return this}getBuffer(){return this.getRef("buffer")}setBuffer(t){return this.setRef("buffer",t)}getArray(){return this.get("array")}setArray(t){return this.set("componentType",t?function(t){switch(t.constructor){case Float32Array:return W.ComponentType.FLOAT;case Uint32Array:return W.ComponentType.UNSIGNED_INT;case Uint16Array:return W.ComponentType.UNSIGNED_SHORT;case Uint8Array:return W.ComponentType.UNSIGNED_BYTE;case Int16Array:return W.ComponentType.SHORT;case Int8Array:return W.ComponentType.BYTE;default:throw new Error("Unknown accessor componentType.")}}(t):W.ComponentType.FLOAT),this.set("array",t),this}getByteLength(){const t=this.get("array");return t?t.byteLength:0}}W.Type={SCALAR:"SCALAR",VEC2:"VEC2",VEC3:"VEC3",VEC4:"VEC4",MAT2:"MAT2",MAT3:"MAT3",MAT4:"MAT4"},W.ComponentType={BYTE:5120,UNSIGNED_BYTE:5121,SHORT:5122,UNSIGNED_SHORT:5123,UNSIGNED_INT:5125,FLOAT:5126};class H extends q{init(){this.propertyType=p.ANIMATION}getDefaults(){return Object.assign(super.getDefaults(),{channels:[],samplers:[]})}addChannel(t){return this.addRef("channels",t)}removeChannel(t){return this.removeRef("channels",t)}listChannels(){return this.listRefs("channels")}addSampler(t){return this.addRef("samplers",t)}removeSampler(t){return this.removeRef("samplers",t)}listSamplers(){return this.listRefs("samplers")}}class Y extends q{init(){this.propertyType=p.ANIMATION_CHANNEL}getDefaults(){return Object.assign(super.getDefaults(),{targetPath:null,targetNode:null,sampler:null})}getTargetPath(){return this.get("targetPath")}setTargetPath(t){return this.set("targetPath",t)}getTargetNode(){return this.getRef("targetNode")}setTargetNode(t){return this.setRef("targetNode",t)}getSampler(){return this.getRef("sampler")}setSampler(t){return this.setRef("sampler",t)}}Y.TargetPath={TRANSLATION:"translation",ROTATION:"rotation",SCALE:"scale",WEIGHTS:"weights"};class Z extends q{init(){this.propertyType=p.ANIMATION_SAMPLER}getDefaultAttributes(){return Object.assign(super.getDefaults(),{interpolation:Z.Interpolation.LINEAR,input:null,output:null})}getInterpolation(){return this.get("interpolation")}setInterpolation(t){return this.set("interpolation",t)}getInput(){return this.getRef("input")}setInput(t){return this.setRef("input",t,{usage:w.OTHER})}getOutput(){return this.getRef("output")}setOutput(t){return this.setRef("output",t,{usage:w.OTHER})}}Z.Interpolation={LINEAR:"LINEAR",STEP:"STEP",CUBICSPLINE:"CUBICSPLINE"};class K extends q{init(){this.propertyType=p.BUFFER}getDefaults(){return Object.assign(super.getDefaults(),{uri:""})}getURI(){return this.get("uri")}setURI(t){return this.set("uri",t)}}class Q extends q{init(){this.propertyType=p.CAMERA}getDefaults(){return Object.assign(super.getDefaults(),{type:Q.Type.PERSPECTIVE,znear:.1,zfar:100,aspectRatio:null,yfov:2*Math.PI*50/360,xmag:1,ymag:1})}getType(){return this.get("type")}setType(t){return this.set("type",t)}getZNear(){return this.get("znear")}setZNear(t){return this.set("znear",t)}getZFar(){return this.get("zfar")}setZFar(t){return this.set("zfar",t)}getAspectRatio(){return this.get("aspectRatio")}setAspectRatio(t){return this.set("aspectRatio",t)}getYFov(){return this.get("yfov")}setYFov(t){return this.set("yfov",t)}getXMag(){return this.get("xmag")}setXMag(t){return this.set("xmag",t)}getYMag(){return this.get("ymag")}setYMag(t){return this.set("ymag",t)}}Q.Type={PERSPECTIVE:"perspective",ORTHOGRAPHIC:"orthographic"};class X extends V{t(t){if(!this.parentTypes.includes(t.propertyType))throw new Error(`Parent "${t.propertyType}" invalid for child "${this.propertyType}".`)}}X.EXTENSION_NAME=void 0;class tt extends q{init(){this.propertyType=p.TEXTURE_INFO}getDefaults(){return Object.assign(super.getDefaults(),{texCoord:0,magFilter:null,minFilter:null,wrapS:tt.WrapMode.REPEAT,wrapT:tt.WrapMode.REPEAT})}getTexCoord(){return this.get("texCoord")}setTexCoord(t){return this.set("texCoord",t)}getMagFilter(){return this.get("magFilter")}setMagFilter(t){return this.set("magFilter",t)}getMinFilter(){return this.get("minFilter")}setMinFilter(t){return this.set("minFilter",t)}getWrapS(){return this.get("wrapS")}setWrapS(t){return this.set("wrapS",t)}getWrapT(){return this.get("wrapT")}setWrapT(t){return this.set("wrapT",t)}}tt.WrapMode={CLAMP_TO_EDGE:33071,MIRRORED_REPEAT:33648,REPEAT:10497},tt.MagFilter={NEAREST:9728,LINEAR:9729},tt.MinFilter={NEAREST:9728,LINEAR:9729,NEAREST_MIPMAP_NEAREST:9984,LINEAR_MIPMAP_NEAREST:9985,NEAREST_MIPMAP_LINEAR:9986,LINEAR_MIPMAP_LINEAR:9987};const{R:et,G:rt,B:st,A:nt}=y;class it extends q{init(){this.propertyType=p.MATERIAL}getDefaults(){return Object.assign(super.getDefaults(),{alphaMode:it.AlphaMode.OPAQUE,alphaCutoff:.5,doubleSided:!1,baseColorFactor:[1,1,1,1],baseColorTexture:null,baseColorTextureInfo:new tt(this.graph,"baseColorTextureInfo"),emissiveFactor:[0,0,0],emissiveTexture:null,emissiveTextureInfo:new tt(this.graph,"emissiveTextureInfo"),normalScale:1,normalTexture:null,normalTextureInfo:new tt(this.graph,"normalTextureInfo"),occlusionStrength:1,occlusionTexture:null,occlusionTextureInfo:new tt(this.graph,"occlusionTextureInfo"),roughnessFactor:1,metallicFactor:1,metallicRoughnessTexture:null,metallicRoughnessTextureInfo:new tt(this.graph,"metallicRoughnessTextureInfo")})}getDoubleSided(){return this.get("doubleSided")}setDoubleSided(t){return this.set("doubleSided",t)}getAlpha(){return this.get("baseColorFactor")[3]}setAlpha(t){const e=this.get("baseColorFactor").slice();return e[3]=t,this.set("baseColorFactor",e)}getAlphaMode(){return this.get("alphaMode")}setAlphaMode(t){return this.set("alphaMode",t)}getAlphaCutoff(){return this.get("alphaCutoff")}setAlphaCutoff(t){return this.set("alphaCutoff",t)}getBaseColorFactor(){return this.get("baseColorFactor")}setBaseColorFactor(t){return this.set("baseColorFactor",t)}getBaseColorHex(){return E.factorToHex(this.get("baseColorFactor"))}setBaseColorHex(t){const e=this.get("baseColorFactor").slice();return this.set("baseColorFactor",E.hexToFactor(t,e))}getBaseColorTexture(){return this.getRef("baseColorTexture")}getBaseColorTextureInfo(){return this.getRef("baseColorTexture")?this.getRef("baseColorTextureInfo"):null}setBaseColorTexture(t){return this.setRef("baseColorTexture",t,{channels:et|rt|st|nt})}getEmissiveFactor(){return this.get("emissiveFactor")}setEmissiveFactor(t){return this.set("emissiveFactor",t)}getEmissiveHex(){return E.factorToHex(this.get("emissiveFactor"))}setEmissiveHex(t){const e=this.get("emissiveFactor").slice();return this.set("emissiveFactor",E.hexToFactor(t,e))}getEmissiveTexture(){return this.getRef("emissiveTexture")}getEmissiveTextureInfo(){return this.getRef("emissiveTexture")?this.getRef("emissiveTextureInfo"):null}setEmissiveTexture(t){return this.setRef("emissiveTexture",t,{channels:et|rt|st})}getNormalScale(){return this.get("normalScale")}setNormalScale(t){return this.set("normalScale",t)}getNormalTexture(){return this.getRef("normalTexture")}getNormalTextureInfo(){return this.getRef("normalTexture")?this.getRef("normalTextureInfo"):null}setNormalTexture(t){return this.setRef("normalTexture",t,{channels:et|rt|st})}getOcclusionStrength(){return this.get("occlusionStrength")}setOcclusionStrength(t){return this.set("occlusionStrength",t)}getOcclusionTexture(){return this.getRef("occlusionTexture")}getOcclusionTextureInfo(){return this.getRef("occlusionTexture")?this.getRef("occlusionTextureInfo"):null}setOcclusionTexture(t){return this.setRef("occlusionTexture",t,{channels:et})}getRoughnessFactor(){return this.get("roughnessFactor")}setRoughnessFactor(t){return this.set("roughnessFactor",t)}getMetallicFactor(){return this.get("metallicFactor")}setMetallicFactor(t){return this.set("metallicFactor",t)}getMetallicRoughnessTexture(){return this.getRef("metallicRoughnessTexture")}getMetallicRoughnessTextureInfo(){return this.getRef("metallicRoughnessTexture")?this.getRef("metallicRoughnessTextureInfo"):null}setMetallicRoughnessTexture(t){return this.setRef("metallicRoughnessTexture",t,{channels:rt|st})}}it.AlphaMode={OPAQUE:"OPAQUE",MASK:"MASK",BLEND:"BLEND"};class ot extends q{init(){this.propertyType=p.MESH}getDefaults(){return Object.assign(super.getDefaults(),{weights:[],primitives:[]})}addPrimitive(t){return this.addRef("primitives",t)}removePrimitive(t){return this.removeRef("primitives",t)}listPrimitives(){return this.listRefs("primitives")}getWeights(){return this.get("weights")}setWeights(t){return this.set("weights",t)}}class at extends q{constructor(...t){super(...t),this.u=null}init(){this.propertyType=p.NODE}getDefaults(){return Object.assign(super.getDefaults(),{translation:[0,0,0],rotation:[0,0,0,1],scale:[1,1,1],weights:[],camera:null,mesh:null,skin:null,children:[]})}copy(t,e=$){if(e===$)throw new Error("Node cannot be copied.");return super.copy(t,e)}getTranslation(){return this.get("translation")}getRotation(){return this.get("rotation")}getScale(){return this.get("scale")}setTranslation(t){return this.set("translation",t)}setRotation(t){return this.set("rotation",t)}setScale(t){return this.set("scale",t)}getMatrix(){return F.compose(this.get("translation"),this.get("rotation"),this.get("scale"),[])}setMatrix(t){const e=this.get("translation").slice(),r=this.get("rotation").slice(),s=this.get("scale").slice();return F.decompose(t,e,r,s),this.set("translation",e).set("rotation",r).set("scale",s)}getWorldTranslation(){const t=[0,0,0];return F.decompose(this.getWorldMatrix(),t,[0,0,0,1],[1,1,1]),t}getWorldRotation(){const t=[0,0,0,1];return F.decompose(this.getWorldMatrix(),[0,0,0],t,[1,1,1]),t}getWorldScale(){const t=[1,1,1];return F.decompose(this.getWorldMatrix(),[0,0,0],[0,0,0,1],t),t}getWorldMatrix(){const t=[];for(let e=this;e instanceof at;e=e.u)t.push(e);let e;const r=t.pop().getMatrix();for(;e=t.pop();)f(r,r,e.getMatrix());return r}addChild(t){t.u&&t.u.removeChild(t),this.addRef("children",t),t.u=this;const r=this[e].children;return r[r.length-1].addEventListener("dispose",()=>t.u=null),this}removeChild(t){return this.removeRef("children",t)}listChildren(){return this.listRefs("children")}getParent(){return this.u}getMesh(){return this.getRef("mesh")}setMesh(t){return this.setRef("mesh",t)}getCamera(){return this.getRef("camera")}setCamera(t){return this.setRef("camera",t)}getSkin(){return this.getRef("skin")}setSkin(t){return this.setRef("skin",t)}getWeights(){return this.get("weights")}setWeights(t){return this.set("weights",t)}traverse(t){t(this);for(const e of this.listChildren())e.traverse(t);return this}}class ut extends q{init(){this.propertyType=p.PRIMITIVE}getDefaults(){return Object.assign(super.getDefaults(),{mode:ut.Mode.TRIANGLES,material:null,indices:null,attributes:{},targets:[]})}getIndices(){return this.getRef("indices")}setIndices(t){return this.setRef("indices",t,{usage:w.ELEMENT_ARRAY_BUFFER})}getAttribute(t){return this.getRefMap("attributes",t)}setAttribute(t,e){return this.setRefMap("attributes",t,e,{usage:w.ARRAY_BUFFER})}listAttributes(){return this.listRefMapValues("attributes")}listSemantics(){return this.listRefMapKeys("attributes")}getMaterial(){return this.getRef("material")}setMaterial(t){return this.setRef("material",t)}getMode(){return this.get("mode")}setMode(t){return this.set("mode",t)}listTargets(){return this.listRefs("targets")}addTarget(t){return this.addRef("targets",t)}removeTarget(t){return this.removeRef("targets",t)}}ut.Mode={POINTS:0,LINES:1,LINE_LOOP:2,LINE_STRIP:3,TRIANGLES:4,TRIANGLE_STRIP:5,TRIANGLE_FAN:6};class ct extends V{init(){this.propertyType=p.PRIMITIVE_TARGET}getDefaults(){return Object.assign(super.getDefaults(),{attributes:{}})}getAttribute(t){return this.getRefMap("attributes",t)}setAttribute(t,e){return this.setRefMap("attributes",t,e,{usage:w.ARRAY_BUFFER})}listAttributes(){return this.listRefMapValues("attributes")}listSemantics(){return this.listRefMapKeys("attributes")}}function ht(){return(ht=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var r=arguments[e];for(var s in r)Object.prototype.hasOwnProperty.call(r,s)&&(t[s]=r[s])}return t}).apply(this,arguments)}class lt extends q{init(){this.propertyType=p.SCENE}getDefaults(){return Object.assign(super.getDefaults(),{children:[]})}copy(t,e=$){if(e===$)throw new Error("Scene cannot be copied.");return super.copy(t,e)}addChild(t){t.u&&t.u.removeChild(t),this.addRef("children",t),t.u=this;const r=this[e].children;return r[r.length-1].addEventListener("dispose",()=>t.u=null),this}removeChild(t){return this.removeRef("children",t)}listChildren(){return this.listRefs("children")}traverse(t){for(const e of this.listChildren())e.traverse(t);return this}}class ft extends q{init(){this.propertyType=p.SKIN}getDefaults(){return Object.assign(super.getDefaults(),{skeleton:null,inverseBindMatrices:null,joints:[]})}getSkeleton(){return this.getRef("skeleton")}setSkeleton(t){return this.setRef("skeleton",t)}getInverseBindMatrices(){return this.getRef("inverseBindMatrices")}setInverseBindMatrices(t){return this.setRef("inverseBindMatrices",t,{usage:w.INVERSE_BIND_MATRICES})}addJoint(t){return this.addRef("joints",t)}removeJoint(t){return this.removeRef("joints",t)}listJoints(){return this.listRefs("joints")}}class dt extends q{init(){this.propertyType=p.TEXTURE}getDefaults(){return Object.assign(super.getDefaults(),{image:null,mimeType:"",uri:""})}getMimeType(){return this.get("mimeType")||M.extensionToMimeType(R.extension(this.get("uri")))}setMimeType(t){return this.set("mimeType",t)}getURI(){return this.get("uri")}setURI(t){return this.set("uri",t),this.set("mimeType",M.extensionToMimeType(R.extension(t))),this}getImage(){return this.get("image")}setImage(t){return this.set("image",A.assertView(t))}getSize(){const t=this.get("image");return t?M.getSize(t,this.getMimeType()):null}}class gt extends q{init(){this.propertyType=p.ROOT}getDefaults(){return Object.assign(super.getDefaults(),{asset:{generator:"glTF-Transform v2.1.0",version:"2.0"},defaultScene:null,accessors:[],animations:[],buffers:[],cameras:[],materials:[],meshes:[],nodes:[],scenes:[],skins:[],textures:[]})}constructor(t){super(t),this.h=new Set,t.addEventListener("node:create",t=>{this.l(t.target)})}clone(){throw new Error("Root cannot be cloned.")}copy(t,e=$){if(e===$)throw new Error("Root cannot be copied.");this.set("asset",ht({},t.get("asset"))),this.setName(t.getName()),this.setExtras(ht({},t.getExtras())),this.setDefaultScene(t.getDefaultScene()?e(t.getDefaultScene()):null);for(const r of t.listRefMapKeys("extensions")){const s=t.getExtension(r);this.setExtension(r,e(s))}return this}l(t){return t instanceof lt?this.addRef("scenes",t):t instanceof at?this.addRef("nodes",t):t instanceof Q?this.addRef("cameras",t):t instanceof ft?this.addRef("skins",t):t instanceof ot?this.addRef("meshes",t):t instanceof it?this.addRef("materials",t):t instanceof dt?this.addRef("textures",t):t instanceof H?this.addRef("animations",t):t instanceof W?this.addRef("accessors",t):t instanceof K&&this.addRef("buffers",t),this}getAsset(){return this.get("asset")}listExtensionsUsed(){return Array.from(this.h)}listExtensionsRequired(){return this.listExtensionsUsed().filter(t=>t.isRequired())}g(t){return this.h.add(t),this}p(t){return this.h.delete(t),this}listScenes(){return this.listRefs("scenes")}setDefaultScene(t){return this.setRef("defaultScene",t)}getDefaultScene(){return this.getRef("defaultScene")}listNodes(){return this.listRefs("nodes")}listCameras(){return this.listRefs("cameras")}listSkins(){return this.listRefs("skins")}listMeshes(){return this.listRefs("meshes")}listMaterials(){return this.listRefs("materials")}listTextures(){return this.listRefs("textures")}listAnimations(){return this.listRefs("animations")}listAccessors(){return this.listRefs("accessors")}listBuffers(){return this.listRefs("buffers")}}class pt{constructor(){this.m=new a,this.T=new gt(this.m),this.v=C.DEFAULT_INSTANCE}getRoot(){return this.T}getGraph(){return this.m}getLogger(){return this.v}setLogger(t){return this.v=t,this}clone(){return(new pt).setLogger(this.v).merge(this)}merge(t){for(const e of t.getRoot().listExtensionsUsed()){const t=this.createExtension(e.constructor);e.isRequired()&&t.setRequired(!0)}const e=new Set,r=new Map;e.add(t.T),r.set(t.T,this.T);for(const s of t.m.listEdges())for(const t of[s.getParent(),s.getChild()]){if(e.has(t))continue;let s;s=t.propertyType===p.TEXTURE_INFO?t:new(0,t.constructor)(this.m),r.set(t,s),e.add(t)}const s=t=>{const e=r.get(t);if(!e)throw new Error("Could resolve property.");return e};for(const t of e){const e=r.get(t);if(!e)throw new Error("Could resolve property.");e.copy(t,s)}return this}async transform(...t){const e=t.map(t=>t.name);for(const r of t)await r(this,{stack:e});return this}createExtension(t){const e=t.EXTENSION_NAME;return this.getRoot().listExtensionsUsed().find(t=>t.extensionName===e)||new t(this)}createScene(t=""){return new lt(this.m,t)}createNode(t=""){return new at(this.m,t)}createCamera(t=""){return new Q(this.m,t)}createSkin(t=""){return new ft(this.m,t)}createMesh(t=""){return new ot(this.m,t)}createPrimitive(){return new ut(this.m)}createPrimitiveTarget(t=""){return new ct(this.m,t)}createMaterial(t=""){return new it(this.m,t)}createTexture(t=""){return new dt(this.m,t)}createAnimation(t=""){return new H(this.m,t)}createAnimationChannel(t=""){return new Y(this.m,t)}createAnimationSampler(t=""){return new Z(this.m,t)}createAccessor(t="",e=null){return e||(e=this.getRoot().listBuffers()[0]),new W(this.m,t).setBuffer(e)}createBuffer(t=""){return new K(this.m,t)}}class mt{constructor(t){this.extensionName="",this.prereadTypes=[],this.prewriteTypes=[],this.readDependencies=[],this.writeDependencies=[],this.document=void 0,this.required=!1,this.properties=new Set,this.S=void 0,this.document=t,t.getRoot().g(this),this.S=t=>{const e=t,r=e.target;r instanceof X&&r.extensionName===this.extensionName&&("node:create"===e.type&&this.M(r),"node:dispose"===e.type&&this.I(r))};const e=t.getGraph();e.addEventListener("node:create",this.S),e.addEventListener("node:dispose",this.S)}dispose(){this.document.getRoot().p(this);const t=this.document.getGraph();t.removeEventListener("node:create",this.S),t.removeEventListener("node:dispose",this.S);for(const t of this.properties)t.dispose()}static register(){}isRequired(){return this.required}setRequired(t){return this.required=t,this}M(t){return this.properties.add(t),this}I(t){return this.properties.delete(t),this}install(t,e){return this}preread(t,e){return this}prewrite(t,e){return this}}mt.EXTENSION_NAME=void 0;class wt{constructor(t){this.jsonDoc=void 0,this.buffers=[],this.bufferViews=[],this.bufferViewBuffers=[],this.accessors=[],this.textures=[],this.textureInfos=new Map,this.materials=[],this.meshes=[],this.cameras=[],this.nodes=[],this.skins=[],this.animations=[],this.scenes=[],this.jsonDoc=t}setTextureInfo(t,e){this.textureInfos.set(t,e),void 0!==e.texCoord&&t.setTexCoord(e.texCoord);const r=this.jsonDoc.json.textures[e.index];if(void 0===r.sampler)return;const s=this.jsonDoc.json.samplers[r.sampler];void 0!==s.magFilter&&t.setMagFilter(s.magFilter),void 0!==s.minFilter&&t.setMinFilter(s.minFilter),void 0!==s.wrapS&&t.setWrapS(s.wrapS),void 0!==s.wrapT&&t.setWrapT(s.wrapT)}}const yt={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},Tt={logger:C.DEFAULT_INSTANCE,extensions:[],dependencies:{}};function vt(t,e){const r=e.bufferViews[t.bufferView],s=e.jsonDoc.json.bufferViews[t.bufferView],n=yt[t.componentType],i=W.getElementSize(t.type),o=n.BYTES_PER_ELEMENT;if(void 0!==s.byteStride&&s.byteStride!==i*o)return function(t,e){const r=e.bufferViews[t.bufferView],s=e.jsonDoc.json.bufferViews[t.bufferView],n=yt[t.componentType],i=W.getElementSize(t.type),o=n.BYTES_PER_ELEMENT,a=t.byteOffset||0,u=new n(t.count*i),c=new DataView(r.buffer,r.byteOffset,r.byteLength),h=s.byteStride;for(let e=0;e<t.count;e++)for(let r=0;r<i;r++){const s=a+e*h+r*o;let n;switch(t.componentType){case W.ComponentType.FLOAT:n=c.getFloat32(s,!0);break;case W.ComponentType.UNSIGNED_INT:n=c.getUint32(s,!0);break;case W.ComponentType.UNSIGNED_SHORT:n=c.getUint16(s,!0);break;case W.ComponentType.UNSIGNED_BYTE:n=c.getUint8(s);break;case W.ComponentType.SHORT:n=c.getInt16(s,!0);break;case W.ComponentType.BYTE:n=c.getInt8(s);break;default:throw new Error(`Unexpected componentType "${t.componentType}".`)}u[e*i+r]=n}return u}(t,e);const a=r.byteOffset+(t.byteOffset||0);return new n(r.buffer.slice(a,a+t.count*i*o))}var xt;!function(t){t[t.ARRAY_BUFFER=34962]="ARRAY_BUFFER",t[t.ELEMENT_ARRAY_BUFFER=34963]="ELEMENT_ARRAY_BUFFER"}(xt||(xt={}));class bt{constructor(t,e,r){this.N=void 0,this.jsonDoc=void 0,this.options=void 0,this.accessorIndexMap=new Map,this.animationIndexMap=new Map,this.bufferIndexMap=new Map,this.cameraIndexMap=new Map,this.skinIndexMap=new Map,this.materialIndexMap=new Map,this.meshIndexMap=new Map,this.nodeIndexMap=new Map,this.imageIndexMap=new Map,this.textureDefIndexMap=new Map,this.textureInfoDefMap=new Map,this.samplerDefIndexMap=new Map,this.sceneIndexMap=new Map,this.imageBufferViews=[],this.otherBufferViews=new Map,this.otherBufferViewsIndexMap=new Map,this.extensionData={},this.bufferURIGenerator=void 0,this.imageURIGenerator=void 0,this.logger=void 0,this.O=new Map,this.accessorUsageGroupedByParent=new Set(["ARRAY_BUFFER"]),this.accessorParents=new Map,this.N=t,this.jsonDoc=e,this.options=r;const s=t.getRoot(),n=s.listBuffers().length,i=s.listTextures().length;this.bufferURIGenerator=new At(n>1,r.basename),this.imageURIGenerator=new At(i>1,r.basename),this.logger=t.getLogger()}createTextureInfoDef(t,e){const r={magFilter:e.getMagFilter()||void 0,minFilter:e.getMinFilter()||void 0,wrapS:e.getWrapS(),wrapT:e.getWrapT()},s=JSON.stringify(r);this.samplerDefIndexMap.has(s)||(this.samplerDefIndexMap.set(s,this.jsonDoc.json.samplers.length),this.jsonDoc.json.samplers.push(r));const n={source:this.imageIndexMap.get(t),sampler:this.samplerDefIndexMap.get(s)},i=JSON.stringify(n);this.textureDefIndexMap.has(i)||(this.textureDefIndexMap.set(i,this.jsonDoc.json.textures.length),this.jsonDoc.json.textures.push(n));const o={index:this.textureDefIndexMap.get(i)};return 0!==e.getTexCoord()&&(o.texCoord=e.getTexCoord()),this.textureInfoDefMap.set(e,o),o}createPropertyDef(t){const e={};return t.getName()&&(e.name=t.getName()),Object.keys(t.getExtras()).length>0&&(e.extras=t.getExtras()),e}createAccessorDef(t){const e=this.createPropertyDef(t);return e.type=t.getType(),e.componentType=t.getComponentType(),e.count=t.getCount(),this.N.getGraph().listParentEdges(t).some(t=>"attributes"===t.getName()&&"POSITION"===t.getAttributes().key||"input"===t.getName())&&(e.max=t.getMax([]).map(Math.fround),e.min=t.getMin([]).map(Math.fround)),t.getNormalized()&&(e.normalized=t.getNormalized()),e}createImageData(t,e,r){if(this.options.format===T.GLB)this.imageBufferViews.push(e),t.bufferView=this.jsonDoc.json.bufferViews.length,this.jsonDoc.json.bufferViews.push({buffer:0,byteOffset:-1,byteLength:e.byteLength});else{const s=M.mimeTypeToExtension(r.getMimeType());t.uri=this.imageURIGenerator.createURI(r,s),this.jsonDoc.resources[t.uri]=e}}getAccessorUsage(t){const e=this.O.get(t);if(e)return e;for(const e of this.N.getGraph().listParentEdges(t)){const{usage:t}=e.getAttributes();if(t)return t;e.getParent().propertyType!==p.ROOT&&this.N.getLogger().warn(`Missing attribute ".usage" on edge, "${e.getName()}".`)}return bt.BufferViewUsage.OTHER}addAccessorToUsageGroup(t,e){const r=this.O.get(t);if(r&&r!==e)throw new Error(`Accessor with usage "${r}" cannot be reused as "${e}".`);return this.O.set(t,e),this}listAccessorUsageGroups(){const t={};for(const[e,r]of Array.from(this.O.entries()))t[r]=t[r]||[],t[r].push(e);return t}}bt.BufferViewTarget=xt,bt.BufferViewUsage=w,bt.USAGE_TO_TARGET={[w.ARRAY_BUFFER]:xt.ARRAY_BUFFER,[w.ELEMENT_ARRAY_BUFFER]:xt.ELEMENT_ARRAY_BUFFER};class At{constructor(t,e){this.multiple=void 0,this.basename=void 0,this.counter=1,this.multiple=t,this.basename=e}createURI(t,e){return t.getURI()?t.getURI():this.multiple?`${this.basename}_${this.counter++}.${e}`:`${this.basename}.${e}`}}const{BufferViewUsage:Et}=bt;var St;!function(t){t[t.JSON=1313821514]="JSON",t[t.BIN=5130562]="BIN"}(St||(St={}));class Mt{constructor(){this.v=C.DEFAULT_INSTANCE,this.h=new Set,this.C={},this.F=m.INTERLEAVED,this.lastReadBytes=0,this.lastWriteBytes=0}setLogger(t){return this.v=t,this}registerExtensions(t){for(const e of t)this.h.add(e),e.register();return this}registerDependencies(t){return Object.assign(this.C,t),this}setVertexLayout(t){return this.F=t,this}async read(t){return await this.readJSON(await this.readAsJSON(t))}async readAsJSON(t){return t.match(/^data:application\/octet-stream;/)||this.detectFormat(t)===T.GLB?this.U(t):this.P(t)}async readJSON(t){return t=this.j(t),this.L(t),class{static read(t,e=Tt){const r=ht({},Tt,e),{json:s}=t,n=new pt;this.validate(t,r);const i=new wt(t),o=s.asset,a=n.getRoot().getAsset();o.copyright&&(a.copyright=o.copyright),o.extras&&(a.extras=o.extras),void 0!==s.extras&&n.getRoot().setExtras(ht({},s.extras));const u=s.extensionsUsed||[],c=s.extensionsRequired||[];for(const t of r.extensions)if(u.includes(t.EXTENSION_NAME)){const e=n.createExtension(t).setRequired(c.includes(t.EXTENSION_NAME));for(const t of e.readDependencies)e.install(t,r.dependencies[t])}const h=s.buffers||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.BUFFER)).forEach(t=>t.preread(i,p.BUFFER)),i.buffers=h.map(t=>{const e=n.createBuffer(t.name);return t.extras&&e.setExtras(t.extras),t.uri&&0!==t.uri.indexOf("__")&&e.setURI(t.uri),e}),i.bufferViewBuffers=(s.bufferViews||[]).map((e,r)=>{if(!i.bufferViews[r]){const s=t.json.buffers[e.buffer];i.bufferViews[r]=A.toView(s.uri?t.resources[s.uri]:t.resources["@glb.bin"],e.byteOffset||0,e.byteLength)}return i.buffers[e.buffer]}),i.accessors=(s.accessors||[]).map(t=>{const e=n.createAccessor(t.name,i.bufferViewBuffers[t.bufferView]).setType(t.type);if(t.extras&&e.setExtras(t.extras),void 0!==t.normalized&&e.setNormalized(t.normalized),void 0===t.bufferView&&!t.sparse)return e;let r;return r=void 0!==t.sparse?function(t,e){const r=yt[t.componentType],s=W.getElementSize(t.type);let n;n=void 0!==t.bufferView?vt(t,e):new r(t.count*s);const i=t.sparse,o=i.count,a=ht({},t,i.indices,{count:o,type:"SCALAR"}),u=ht({},t,i.values,{count:o}),c=vt(a,e),h=vt(u,e);for(let t=0;t<a.count;t++)for(let e=0;e<s;e++)n[c[t]*s+e]=h[t*s+e];return n}(t,i):vt(t,i),e.setArray(r),e});const l=s.images||[],f=s.textures||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.TEXTURE)).forEach(t=>t.preread(i,p.TEXTURE)),i.textures=l.map(e=>{const r=n.createTexture(e.name);if(e.extras&&r.setExtras(e.extras),void 0!==e.bufferView){const n=s.bufferViews[e.bufferView],i=t.json.buffers[n.buffer],o=n.byteOffset||0,a=(i.uri?t.resources[i.uri]:t.resources["@glb.bin"]).slice(o,o+n.byteLength);r.setImage(a)}else void 0!==e.uri&&(r.setImage(t.resources[e.uri]),0!==e.uri.indexOf("__")&&r.setURI(e.uri));if(void 0!==e.mimeType)r.setMimeType(e.mimeType);else if(e.uri){const t=R.extension(e.uri);r.setMimeType(M.extensionToMimeType(t))}return r}),i.materials=(s.materials||[]).map(t=>{const e=n.createMaterial(t.name);t.extras&&e.setExtras(t.extras),void 0!==t.alphaMode&&e.setAlphaMode(t.alphaMode),void 0!==t.alphaCutoff&&e.setAlphaCutoff(t.alphaCutoff),void 0!==t.doubleSided&&e.setDoubleSided(t.doubleSided);const r=t.pbrMetallicRoughness||{};if(void 0!==r.baseColorFactor&&e.setBaseColorFactor(r.baseColorFactor),void 0!==t.emissiveFactor&&e.setEmissiveFactor(t.emissiveFactor),void 0!==r.metallicFactor&&e.setMetallicFactor(r.metallicFactor),void 0!==r.roughnessFactor&&e.setRoughnessFactor(r.roughnessFactor),void 0!==r.baseColorTexture){const t=r.baseColorTexture;e.setBaseColorTexture(i.textures[f[t.index].source]),i.setTextureInfo(e.getBaseColorTextureInfo(),t)}if(void 0!==t.emissiveTexture){const r=t.emissiveTexture;e.setEmissiveTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getEmissiveTextureInfo(),r)}if(void 0!==t.normalTexture){const r=t.normalTexture;e.setNormalTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getNormalTextureInfo(),r),void 0!==t.normalTexture.scale&&e.setNormalScale(t.normalTexture.scale)}if(void 0!==t.occlusionTexture){const r=t.occlusionTexture;e.setOcclusionTexture(i.textures[f[r.index].source]),i.setTextureInfo(e.getOcclusionTextureInfo(),r),void 0!==t.occlusionTexture.strength&&e.setOcclusionStrength(t.occlusionTexture.strength)}if(void 0!==r.metallicRoughnessTexture){const t=r.metallicRoughnessTexture;e.setMetallicRoughnessTexture(i.textures[f[t.index].source]),i.setTextureInfo(e.getMetallicRoughnessTextureInfo(),t)}return e});const d=s.meshes||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.PRIMITIVE)).forEach(t=>t.preread(i,p.PRIMITIVE)),i.meshes=d.map(t=>{const e=n.createMesh(t.name);return t.extras&&e.setExtras(t.extras),void 0!==t.weights&&e.setWeights(t.weights),(t.primitives||[]).forEach(r=>{const s=n.createPrimitive();r.extras&&s.setExtras(r.extras),void 0!==r.material&&s.setMaterial(i.materials[r.material]),void 0!==r.mode&&s.setMode(r.mode);for(const[t,e]of Object.entries(r.attributes||{}))s.setAttribute(t,i.accessors[e]);void 0!==r.indices&&s.setIndices(i.accessors[r.indices]);const o=t.extras&&t.extras.targetNames||[];(r.targets||[]).forEach((t,e)=>{const r=o[e]||e.toString(),a=n.createPrimitiveTarget(r);for(const[e,r]of Object.entries(t))a.setAttribute(e,i.accessors[r]);s.addTarget(a)}),e.addPrimitive(s)}),e}),i.cameras=(s.cameras||[]).map(t=>{const e=n.createCamera(t.name).setType(t.type);if(t.extras&&e.setExtras(t.extras),t.type===Q.Type.PERSPECTIVE){const r=t.perspective;e.setYFov(r.yfov),e.setZNear(r.znear),void 0!==r.zfar&&e.setZFar(r.zfar),void 0!==r.aspectRatio&&e.setAspectRatio(r.aspectRatio)}else{const r=t.orthographic;e.setZNear(r.znear).setZFar(r.zfar).setXMag(r.xmag).setYMag(r.ymag)}return e});const g=s.nodes||[];n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.NODE)).forEach(t=>t.preread(i,p.NODE)),i.nodes=g.map(t=>{const e=n.createNode(t.name);if(t.extras&&e.setExtras(t.extras),void 0!==t.translation&&e.setTranslation(t.translation),void 0!==t.rotation&&e.setRotation(t.rotation),void 0!==t.scale&&e.setScale(t.scale),void 0!==t.matrix){const r=[0,0,0],s=[0,0,0,1],n=[1,1,1];F.decompose(t.matrix,r,s,n),e.setTranslation(r),e.setRotation(s),e.setScale(n)}return void 0!==t.weights&&e.setWeights(t.weights),e}),i.skins=(s.skins||[]).map(t=>{const e=n.createSkin(t.name);t.extras&&e.setExtras(t.extras),void 0!==t.inverseBindMatrices&&e.setInverseBindMatrices(i.accessors[t.inverseBindMatrices]),void 0!==t.skeleton&&e.setSkeleton(i.nodes[t.skeleton]);for(const r of t.joints)e.addJoint(i.nodes[r]);return e}),g.map((t,e)=>{const r=i.nodes[e];(t.children||[]).forEach(t=>r.addChild(i.nodes[t])),void 0!==t.mesh&&r.setMesh(i.meshes[t.mesh]),void 0!==t.camera&&r.setCamera(i.cameras[t.camera]),void 0!==t.skin&&r.setSkin(i.skins[t.skin])}),i.animations=(s.animations||[]).map(t=>{const e=n.createAnimation(t.name);t.extras&&e.setExtras(t.extras);const r=(t.samplers||[]).map(t=>{const r=n.createAnimationSampler().setInput(i.accessors[t.input]).setOutput(i.accessors[t.output]).setInterpolation(t.interpolation||Z.Interpolation.LINEAR);return t.extras&&r.setExtras(t.extras),e.addSampler(r),r});return(t.channels||[]).forEach(t=>{const s=n.createAnimationChannel().setSampler(r[t.sampler]).setTargetNode(i.nodes[t.target.node]).setTargetPath(t.target.path);t.extras&&s.setExtras(t.extras),e.addChannel(s)}),e});const m=s.scenes||[];return n.getRoot().listExtensionsUsed().filter(t=>t.prereadTypes.includes(p.SCENE)).forEach(t=>t.preread(i,p.SCENE)),i.scenes=m.map(t=>{const e=n.createScene(t.name);return t.extras&&e.setExtras(t.extras),(t.nodes||[]).map(t=>i.nodes[t]).forEach(t=>e.addChild(t)),e}),void 0!==s.scene&&n.getRoot().setDefaultScene(i.scenes[s.scene]),n.getRoot().listExtensionsUsed().forEach(t=>t.read(i)),n}static validate(t,e){const r=t.json;if("2.0"!==r.asset.version)throw new Error(`Unsupported glTF version, "${r.asset.version}".`);if(r.extensionsRequired)for(const t of r.extensionsRequired)if(!e.extensions.find(e=>e.EXTENSION_NAME===t))throw new Error(`Missing required extension, "${t}".`);if(r.extensionsUsed)for(const t of r.extensionsUsed)e.extensions.find(e=>e.EXTENSION_NAME===t)||e.logger.warn(`Missing optional extension, "${t}".`)}}.read(t,{extensions:Array.from(this.h),dependencies:this.C,logger:this.v})}async binaryToJSON(t){const e=this._(A.assertView(t));this.L(e);const r=e.json;if(r.buffers&&r.buffers.some(t=>function(t,e){return void 0!==e.uri&&!(e.uri in t.resources)}(e,t)))throw new Error("Cannot resolve external buffers with binaryToJSON().");if(r.images&&r.images.some(t=>function(t,e){return void 0!==e.uri&&!(e.uri in t.resources)&&void 0===e.bufferView}(e,t)))throw new Error("Cannot resolve external images with binaryToJSON().");return e}async readBinary(t){return this.readJSON(await this.binaryToJSON(A.assertView(t)))}async writeJSON(t,e={}){if(e.format===T.GLB&&t.getRoot().listBuffers().length>1)throw new Error("GLB must have 0–1 buffers.");return class{static write(t,e){const r=t.getRoot(),s={asset:ht({generator:"glTF-Transform v2.1.0"},r.getAsset()),extras:ht({},r.getExtras())},n={json:s,resources:{}},i=new bt(t,n,e),o=e.logger||C.DEFAULT_INSTANCE,a=new Set(e.extensions.map(t=>t.EXTENSION_NAME)),u=t.getRoot().listExtensionsUsed().filter(t=>a.has(t.extensionName)),c=t.getRoot().listExtensionsRequired().filter(t=>a.has(t.extensionName));u.length<t.getRoot().listExtensionsUsed().length&&o.debug("Some extensions were not registered for I/O, and will not be written.");for(const t of u)for(const r of t.writeDependencies)t.install(r,e.dependencies[r]);function h(t,e,r,n){const o=[];let a=0;for(const e of t){const t=i.createAccessorDef(e);t.bufferView=s.bufferViews.length;const r=e.getArray(),n=A.pad(A.toView(r));t.byteOffset=a,a+=n.byteLength,o.push(n),i.accessorIndexMap.set(e,s.accessors.length),s.accessors.push(t)}const u={buffer:e,byteOffset:r,byteLength:A.concat(o).byteLength};return n&&(u.target=n),s.bufferViews.push(u),{buffers:o,byteLength:a}}function l(t,e,r){const n=t[0].getCount();let o=0;for(const e of t){const t=i.createAccessorDef(e);t.bufferView=s.bufferViews.length,t.byteOffset=o;const r=e.getElementSize(),n=e.getComponentSize();o+=A.padNumber(r*n),i.accessorIndexMap.set(e,s.accessors.length),s.accessors.push(t)}const a=n*o,u=new ArrayBuffer(a),c=new DataView(u);for(let e=0;e<n;e++){let r=0;for(const s of t){const t=s.getElementSize(),n=s.getComponentSize(),i=s.getComponentType(),a=s.getArray();for(let s=0;s<t;s++){const u=e*o+r+s*n,h=a[e*t+s];switch(i){case W.ComponentType.FLOAT:c.setFloat32(u,h,!0);break;case W.ComponentType.BYTE:c.setInt8(u,h);break;case W.ComponentType.SHORT:c.setInt16(u,h,!0);break;case W.ComponentType.UNSIGNED_BYTE:c.setUint8(u,h);break;case W.ComponentType.UNSIGNED_SHORT:c.setUint16(u,h,!0);break;case W.ComponentType.UNSIGNED_INT:c.setUint32(u,h,!0);break;default:throw new Error("Unexpected component type: "+i)}}r+=A.padNumber(t*n)}}return s.bufferViews.push({buffer:e,byteOffset:r,byteLength:a,byteStride:o,target:bt.BufferViewTarget.ARRAY_BUFFER}),{byteLength:a,buffers:[new Uint8Array(u)]}}const f=new Map;for(const e of t.getGraph().listEdges()){if(e.getParent()===r)continue;const t=e.getChild();if(t instanceof W){const r=f.get(t)||[];r.push(e),f.set(t,r)}}if(s.accessors=[],s.bufferViews=[],s.samplers=[],s.textures=[],s.images=r.listTextures().map((t,e)=>{const r=i.createPropertyDef(t);t.getMimeType()&&(r.mimeType=t.getMimeType());const s=t.getImage();return s&&i.createImageData(r,s,t),i.imageIndexMap.set(t,e),r}),u.filter(t=>t.prewriteTypes.includes(p.ACCESSOR)).forEach(t=>t.prewrite(i,p.ACCESSOR)),r.listAccessors().forEach(t=>{const e=i.accessorUsageGroupedByParent,r=i.accessorParents;if(i.accessorIndexMap.has(t))return;const s=f.get(t)||[],n=i.getAccessorUsage(t);if(i.addAccessorToUsageGroup(t,n),e.has(n)){const e=s[0].getParent(),n=r.get(e)||new Set;n.add(t),r.set(e,n)}}),u.filter(t=>t.prewriteTypes.includes(p.BUFFER)).forEach(t=>t.prewrite(i,p.BUFFER)),(r.listAccessors().length>0||r.listTextures().length>0||i.otherBufferViews.size>0)&&0===r.listBuffers().length)throw new Error("Buffer required for Document resources, but none was found.");s.buffers=[],r.listBuffers().forEach((t,r)=>{const o=i.createPropertyDef(t),a=i.accessorUsageGroupedByParent,u=i.accessorParents,c=t.listParents().filter(t=>t instanceof W),f=new Set(c),d=[],g=s.buffers.length;let p=0;const w=i.listAccessorUsageGroups();for(const t in w)if(a.has(t))for(const r of Array.from(u.values())){const s=Array.from(r).filter(t=>f.has(t)).filter(e=>i.getAccessorUsage(e)===t);if(s.length)if(t!==Et.ARRAY_BUFFER||e.vertexLayout===m.INTERLEAVED){const e=t===Et.ARRAY_BUFFER?l(s,g,p):h(s,g,p);p+=e.byteLength,d.push(...e.buffers)}else for(const t of s){const e=l([t],g,p);p+=e.byteLength,d.push(...e.buffers)}}else{const e=w[t].filter(t=>f.has(t));if(!e.length)continue;const r=h(e,g,p,t===Et.ELEMENT_ARRAY_BUFFER?bt.BufferViewTarget.ELEMENT_ARRAY_BUFFER:void 0);p+=r.byteLength,d.push(...r.buffers)}if(i.imageBufferViews.length&&0===r)for(let t=0;t<i.imageBufferViews.length;t++)if(s.bufferViews[s.images[t].bufferView].byteOffset=p,p+=i.imageBufferViews[t].byteLength,d.push(i.imageBufferViews[t]),p%8){const t=8-p%8;p+=t,d.push(new Uint8Array(t))}if(i.otherBufferViews.has(t))for(const e of i.otherBufferViews.get(t))s.bufferViews.push({buffer:g,byteOffset:p,byteLength:e.byteLength}),i.otherBufferViewsIndexMap.set(e,s.bufferViews.length-1),p+=e.byteLength,d.push(e);if(p){let r;e.format===T.GLB?r="@glb.bin":(r=i.bufferURIGenerator.createURI(t,"bin"),o.uri=r),o.byteLength=p,n.resources[r]=A.concat(d)}s.buffers.push(o),i.bufferIndexMap.set(t,r)}),r.listAccessors().find(t=>!t.getBuffer())&&o.warn("Skipped writing one or more Accessors: no Buffer assigned."),s.materials=r.listMaterials().map((t,e)=>{const r=i.createPropertyDef(t);if(t.getAlphaMode()!==it.AlphaMode.OPAQUE&&(r.alphaMode=t.getAlphaMode()),t.getAlphaMode()===it.AlphaMode.MASK&&(r.alphaCutoff=t.getAlphaCutoff()),t.getDoubleSided()&&(r.doubleSided=!0),r.pbrMetallicRoughness={},F.eq(t.getBaseColorFactor(),[1,1,1,1])||(r.pbrMetallicRoughness.baseColorFactor=t.getBaseColorFactor()),F.eq(t.getEmissiveFactor(),[0,0,0])||(r.emissiveFactor=t.getEmissiveFactor()),1!==t.getRoughnessFactor()&&(r.pbrMetallicRoughness.roughnessFactor=t.getRoughnessFactor()),1!==t.getMetallicFactor()&&(r.pbrMetallicRoughness.metallicFactor=t.getMetallicFactor()),t.getBaseColorTexture()){const e=t.getBaseColorTexture(),s=t.getBaseColorTextureInfo();r.pbrMetallicRoughness.baseColorTexture=i.createTextureInfoDef(e,s)}if(t.getEmissiveTexture()){const e=t.getEmissiveTexture(),s=t.getEmissiveTextureInfo();r.emissiveTexture=i.createTextureInfoDef(e,s)}if(t.getNormalTexture()){const e=t.getNormalTexture(),s=t.getNormalTextureInfo(),n=i.createTextureInfoDef(e,s);1!==t.getNormalScale()&&(n.scale=t.getNormalScale()),r.normalTexture=n}if(t.getOcclusionTexture()){const e=t.getOcclusionTexture(),s=t.getOcclusionTextureInfo(),n=i.createTextureInfoDef(e,s);1!==t.getOcclusionStrength()&&(n.strength=t.getOcclusionStrength()),r.occlusionTexture=n}if(t.getMetallicRoughnessTexture()){const e=t.getMetallicRoughnessTexture(),s=t.getMetallicRoughnessTextureInfo();r.pbrMetallicRoughness.metallicRoughnessTexture=i.createTextureInfoDef(e,s)}return i.materialIndexMap.set(t,e),r}),s.meshes=r.listMeshes().map((t,e)=>{const r=i.createPropertyDef(t);let s=null;return r.primitives=t.listPrimitives().map(t=>{const e={attributes:{}};e.mode=t.getMode();const r=t.getMaterial();r&&(e.material=i.materialIndexMap.get(r)),Object.keys(t.getExtras()).length&&(e.extras=t.getExtras());const n=t.getIndices();n&&(e.indices=i.accessorIndexMap.get(n));for(const r of t.listSemantics())e.attributes[r]=i.accessorIndexMap.get(t.getAttribute(r));for(const r of t.listTargets()){const t={};for(const e of r.listSemantics())t[e]=i.accessorIndexMap.get(r.getAttribute(e));e.targets=e.targets||[],e.targets.push(t)}return t.listTargets().length&&!s&&(s=t.listTargets().map(t=>t.getName())),e}),t.getWeights().length&&(r.weights=t.getWeights()),s&&(r.extras=r.extras||{},r.extras.targetNames=s),i.meshIndexMap.set(t,e),r}),s.cameras=r.listCameras().map((t,e)=>{const r=i.createPropertyDef(t);if(r.type=t.getType(),r.type===Q.Type.PERSPECTIVE){r.perspective={znear:t.getZNear(),zfar:t.getZFar(),yfov:t.getYFov()};const e=t.getAspectRatio();null!==e&&(r.perspective.aspectRatio=e)}else r.orthographic={znear:t.getZNear(),zfar:t.getZFar(),xmag:t.getXMag(),ymag:t.getYMag()};return i.cameraIndexMap.set(t,e),r}),s.nodes=r.listNodes().map((t,e)=>{const r=i.createPropertyDef(t);return F.eq(t.getTranslation(),[0,0,0])||(r.translation=t.getTranslation()),F.eq(t.getRotation(),[0,0,0,1])||(r.rotation=t.getRotation()),F.eq(t.getScale(),[1,1,1])||(r.scale=t.getScale()),t.getWeights().length&&(r.weights=t.getWeights()),i.nodeIndexMap.set(t,e),r}),s.skins=r.listSkins().map((t,e)=>{const r=i.createPropertyDef(t),s=t.getInverseBindMatrices();s&&(r.inverseBindMatrices=i.accessorIndexMap.get(s));const n=t.getSkeleton();return n&&(r.skeleton=i.nodeIndexMap.get(n)),r.joints=t.listJoints().map(t=>i.nodeIndexMap.get(t)),i.skinIndexMap.set(t,e),r}),r.listNodes().forEach((t,e)=>{const r=s.nodes[e],n=t.getMesh();n&&(r.mesh=i.meshIndexMap.get(n));const o=t.getCamera();o&&(r.camera=i.cameraIndexMap.get(o));const a=t.getSkin();a&&(r.skin=i.skinIndexMap.get(a)),t.listChildren().length>0&&(r.children=t.listChildren().map(t=>i.nodeIndexMap.get(t)))}),s.animations=r.listAnimations().map((t,e)=>{const r=i.createPropertyDef(t),s=new Map;return r.samplers=t.listSamplers().map((t,e)=>{const r=i.createPropertyDef(t);return r.input=i.accessorIndexMap.get(t.getInput()),r.output=i.accessorIndexMap.get(t.getOutput()),r.interpolation=t.getInterpolation(),s.set(t,e),r}),r.channels=t.listChannels().map(t=>{const e=i.createPropertyDef(t);return e.sampler=s.get(t.getSampler()),e.target={node:i.nodeIndexMap.get(t.getTargetNode()),path:t.getTargetPath()},e}),i.animationIndexMap.set(t,e),r}),s.scenes=r.listScenes().map((t,e)=>{const r=i.createPropertyDef(t);return r.nodes=t.listChildren().map(t=>i.nodeIndexMap.get(t)),i.sceneIndexMap.set(t,e),r});const d=r.getDefaultScene();return d&&(s.scene=r.listScenes().indexOf(d)),s.extensionsUsed=u.map(t=>t.extensionName),s.extensionsRequired=c.map(t=>t.extensionName),u.forEach(t=>t.write(i)),function(t){const e=[];for(const r in t){const s=t[r];(Array.isArray(s)&&0===s.length||null===s||""===s||s&&"object"==typeof s&&0===Object.keys(s).length)&&e.push(r)}for(const r of e)delete t[r]}(s),n}}.write(t,{format:e.format||T.GLTF,basename:e.basename||"",logger:this.v,vertexLayout:this.F,dependencies:ht({},this.C),extensions:Array.from(this.h)})}async writeBinary(t){const{json:e,resources:r}=await this.writeJSON(t,{format:T.GLB}),s=new Uint32Array([1179937895,2,12]),n=JSON.stringify(e),i=A.pad(A.encodeText(n),32),o=A.toView(new Uint32Array([i.byteLength,1313821514])),a=A.concat([o,i]);s[s.length-1]+=a.byteLength;const u=Object.values(r)[0];if(!u||!u.byteLength)return A.concat([A.toView(s),a]);const c=A.pad(u,0),h=A.toView(new Uint32Array([c.byteLength,5130562])),l=A.concat([h,c]);return s[s.length-1]+=l.byteLength,A.concat([A.toView(s),a,l])}detectFormat(t){return"glb"===(J.isAbsoluteURL(t)?J.extension(t):R.extension(t))?T.GLB:T.GLTF}async P(t){this.lastReadBytes=0;const e=await this.readURI(t,"text");this.lastReadBytes+=e.length;const r={json:JSON.parse(e),resources:{}};return await this.D(r,this.dirname(t)),this.L(r),r}async U(t){const e=await this.readURI(t,"view");this.lastReadBytes=e.byteLength;const r=this._(e);return await this.D(r,this.dirname(t)),this.L(r),r}async D(t,e){var r=this;const s=[...t.json.images||[],...t.json.buffers||[]].map(async function(s){const n=s.uri;if(!n||n.match(/data:/))return Promise.resolve();t.resources[n]=await r.readURI(r.resolve(e,n),"view"),r.lastReadBytes+=t.resources[n].byteLength});await Promise.all(s)}L(t){function e(e){if(e.uri)if(e.uri in t.resources)A.assertView(t.resources[e.uri]);else if(e.uri.match(/data:/)){const r=`__${G()}.${R.extension(e.uri)}`;t.resources[r]=A.createBufferFromDataURI(e.uri),e.uri=r}}(t.json.images||[]).forEach(t=>{if(void 0===t.bufferView&&void 0===t.uri)throw new Error("Missing resource URI or buffer view.");e(t)}),(t.json.buffers||[]).forEach(e)}j(t){const{images:e,buffers:r}=t.json;return t={json:ht({},t.json),resources:ht({},t.resources)},e&&(t.json.images=e.map(t=>ht({},t))),r&&(t.json.buffers=r.map(t=>ht({},t))),t}_(t){const e=new Uint32Array(t.buffer,t.byteOffset,3);if(1179937895!==e[0])throw new Error("Invalid glTF asset.");if(2!==e[1])throw new Error(`Unsupported glTF binary version, "${e[1]}".`);const r=new Uint32Array(t.buffer,t.byteOffset+12,2);if(r[1]!==St.JSON)throw new Error("Missing required GLB JSON chunk.");const s=r[0],n=A.decodeText(A.toView(t,20,s)),i=JSON.parse(n),o=20+s;if(t.byteLength<=o)return{json:i,resources:{}};const a=new Uint32Array(t.buffer,t.byteOffset+o,2);if(a[1]!==St.BIN)throw new Error("Expected GLB BIN in second chunk.");return{json:i,resources:{"@glb.bin":A.toView(t,o+8,a[0])}}}}class It extends Mt{constructor(t=null,e=J.DEFAULT_INIT){super(),this.k=void 0,this.J=void 0,this.$=void 0,this.V=void 0,this.q=!1,this.k=require("fs").promises,this.J=require("path"),this.$=t,this.V=e}setAllowHTTP(t){if(t&&!this.$)throw new Error("NodeIO requires a Fetch API implementation for HTTP requests.");return this.q=t,this}async readURI(t,e){if(J.isAbsoluteURL(t)){if(!this.q||!this.$)throw new Error("Network request blocked. Allow HTTP requests explicitly, if needed.");const r=await this.$(t,this.V);switch(e){case"view":return new Uint8Array(await r.arrayBuffer());case"text":return r.text()}}else switch(e){case"view":return this.k.readFile(t);case"text":return this.k.readFile(t,"utf8")}}resolve(t,e){return J.isAbsoluteURL(t)||J.isAbsoluteURL(e)?J.resolve(t,e):this.J.resolve(t,e)}dirname(t){return J.isAbsoluteURL(t)?J.dirname(t):this.J.dirname(t)}async write(t,e){const r=!!t.match(/\.glb$/);await(r?this.W(t,e):this.H(t,e))}async H(t,e){var r=this;this.lastWriteBytes=0;const{json:s,resources:n}=await this.writeJSON(e,{format:T.GLTF,basename:R.basename(t)}),{k:i,J:o}=this,a=o.dirname(t),u=JSON.stringify(s,null,2);this.lastWriteBytes+=u.length,await i.writeFile(t,u);const c=Object.keys(n).map(async function(t){if(J.isAbsoluteURL(t)){if("bin"===J.extension(t))throw new Error(`Cannot write buffer to path "${t}".`);return}const e=Buffer.from(n[t]);await i.writeFile(o.join(a,t),e),r.lastWriteBytes+=e.byteLength});await Promise.all(c)}async W(t,e){const r=Buffer.from(await this.writeBinary(e));await this.k.writeFile(t,r),this.lastWriteBytes=r.byteLength}}class Rt extends Mt{constructor(t){super(),this.J=void 0,this.J=t}async readURI(t,e){switch(e){case"view":return Deno.readFile(t);case"text":return Deno.readTextFile(t)}}resolve(t,e){return this.J.resolve(t,e)}dirname(t){return this.J.dirname(t)}}class Nt extends Mt{constructor(t=J.DEFAULT_INIT){super(),this.V=void 0,this.V=t}async readURI(t,e){const r=await fetch(t,this.V);switch(e){case"view":return new Uint8Array(await r.arrayBuffer());case"text":return r.text()}}resolve(t,e){return J.resolve(t,e)}dirname(t){return J.dirname(t)}detectFormat(t){return"glb"===J.extension(t)?T.GLB:T.GLTF}}export{W as Accessor,H as Animation,Y as AnimationChannel,Z as AnimationSampler,K as Buffer,A as BufferUtils,$ as COPY_IDENTITY,Q as Camera,E as ColorUtils,Rt as DenoIO,pt as Document,q as ExtensibleProperty,mt as Extension,X as ExtensionProperty,R as FileUtils,T as Format,g as GLB_BUFFER,M as ImageUtils,C as Logger,it as Material,F as MathUtils,ot as Mesh,at as Node,It as NodeIO,Mt as PlatformIO,ut as Primitive,ct as PrimitiveTarget,V as Property,p as PropertyType,wt as ReaderContext,gt as Root,lt as Scene,ft as Skin,dt as Texture,y as TextureChannel,tt as TextureInfo,d as VERSION,m as VertexLayout,Nt as WebIO,bt as WriterContext,v as bounds,G as uuid};
 //# sourceMappingURL=core.modern.js.map

dist/io/platform-io.d.ts

@@ -1,2 +0,2 @@
-import { VertexLayout } from '../constants';
+import { Format, VertexLayout } from '../constants';
 import { Document } from '../document';
@@ -74,2 +74,4 @@ import { Extension } from '../extension';
      */
+    /** @hidden */
+    protected detectFormat(uri: string): Format;
     private _readGLTF;
@@ -76,0 +78,0 @@ private _readGLB;

dist/io/web-io.d.ts

 import { PlatformIO } from './platform-io';
+import { Format } from '../constants';
 /**
@@ -40,2 +41,4 @@ * # WebIO
     protected dirname(uri: string): string;
+    /** @hidden */
+    protected detectFormat(uri: string): Format;
 }

dist/utils/file-utils.d.ts

@@ -9,6 +9,12 @@ /**
 export declare class FileUtils {
-    /** Extracts the basename from a path, e.g. "folder/model.glb" -> "model". */
-    static basename(path: string): string;
-    /** Extracts the extension from a path, e.g. "folder/model.glb" -> "glb". */
-    static extension(path: string): string;
+    /**
+     * Extracts the basename from a file path, e.g. "folder/model.glb" -> "model".
+     * See: {@link HTTPUtils.basename}
+     */
+    static basename(uri: string): string;
+    /**
+     * Extracts the extension from a file path, e.g. "folder/model.glb" -> "glb".
+     * See: {@link HTTPUtils.extension}
+     */
+    static extension(uri: string): string;
 }

dist/utils/http-utils.d.ts

@@ -1,1 +0,33 @@
-export {};
+/**
+ * # HTTPUtils
+ *
+ * *Utility class for working with URLs.*
+ *
+ * @category Utilities
+ */
+export declare class HTTPUtils {
+    static readonly DEFAULT_INIT: RequestInit;
+    static readonly PROTOCOL_REGEXP: RegExp;
+    static dirname(path: string): string;
+    /**
+     * Extracts the basename from a URL, e.g. "folder/model.glb" -> "model".
+     * See: {@link FileUtils.basename}
+     */
+    static basename(uri: string): string;
+    /**
+     * Extracts the extension from a URL, e.g. "folder/model.glb" -> "glb".
+     * See: {@link FileUtils.extension}
+     */
+    static extension(uri: string): string;
+    static resolve(base: string, path: string): string;
+    /**
+     * Returns true for URLs containing a protocol, and false for both
+     * absolute and relative paths.
+     */
+    static isAbsoluteURL(path: string): boolean;
+    /**
+     * Returns true for paths that are declared relative to some unknown base
+     * path. For example, "foo/bar/" is relative both "/foo/bar/" is not.
+     */
+    static isRelativePath(path: string): boolean;
+}

package.json

 {
   "name": "@gltf-transform/core",
-  "version": "2.0.5",
+  "version": "2.1.0",
   "repository": "github:donmccurdy/glTF-Transform",
@@ -49,3 +49,3 @@ "homepage": "https://gltf-transform.donmccurdy.com/",
   },
-  "gitHead": "9431e3aeec7d1bac01c31090b2c20fe5227a8146"
+  "gitHead": "5cc8d10b5de17633b6a63a4fa5e10e0e60c71e84"
 }

src/io/node-io.ts

@@ -148,3 +148,3 @@ import { Format } from '../constants';
 			if (HTTPUtils.isAbsoluteURL(resourceURI)) {
-				if (FileUtils.extension(resourceURI) === 'bin') {
+				if (HTTPUtils.extension(resourceURI) === 'bin') {
 					throw new Error(`Cannot write buffer to path "${resourceURI}".`);
@@ -151,0 +151,0 @@ }

src/io/platform-io.ts

@@ -6,3 +6,3 @@ import { Format, GLB_BUFFER, VertexLayout } from '../constants';
 import { GLTF } from '../types/gltf';
-import { BufferUtils, FileUtils, Logger, uuid } from '../utils/';
+import { BufferUtils, FileUtils, HTTPUtils, Logger, uuid } from '../utils/';
 import { GLTFReader } from './reader';
@@ -95,3 +95,3 @@ import { GLTFWriter, WriterOptions } from './writer';
 	public async readAsJSON(uri: string): Promise<JSONDocument> {
-		const isGLB = uri.match(/^data:application\/octet-stream;/) || FileUtils.extension(uri) === 'glb';
+		const isGLB = uri.match(/^data:application\/octet-stream;/) || this.detectFormat(uri) === Format.GLB;
 		return isGLB ? this._readGLB(uri) : this._readGLTF(uri);
@@ -180,2 +180,9 @@ }
 
+	/** @hidden */
+	protected detectFormat(uri: string): Format {
+		// Overriden by WebIO, which only uses HTTPUtils.
+		const extension = HTTPUtils.isAbsoluteURL(uri) ? HTTPUtils.extension(uri) : FileUtils.extension(uri);
+		return extension === 'glb' ? Format.GLB : Format.GLTF;
+	}
+
 	private async _readGLTF(uri: string): Promise<JSONDocument> {
@@ -182,0 +189,0 @@ this.lastReadBytes = 0;

src/io/web-io.ts

 import { PlatformIO } from './platform-io';
 import { HTTPUtils } from '../utils';
+import { Format } from '../constants';
 
@@ -62,2 +63,7 @@ /**
 	}
+
+	/** @hidden */
+	protected detectFormat(uri: string): Format {
+		return HTTPUtils.extension(uri) === 'glb' ? Format.GLB : Format.GLTF;
+	}
 }

src/utils/file-utils.ts

@@ -1,4 +0,2 @@
-// Need a placeholder domain to construct a URL from a relative path. We only
-// access `url.pathname`, so the domain doesn't matter.
-const NULL_DOMAIN = 'https://null.example';
+import { ImageUtils } from './image-utils';
 
@@ -13,22 +11,28 @@ /**
 export class FileUtils {
-	/** Extracts the basename from a path, e.g. "folder/model.glb" -> "model". */
-	static basename(path: string): string {
-		path = new URL(path, NULL_DOMAIN).pathname;
-		const fileName = path.split(/[\\/]/).pop()!;
+	/**
+	 * Extracts the basename from a file path, e.g. "folder/model.glb" -> "model".
+	 * See: {@link HTTPUtils.basename}
+	 */
+	static basename(uri: string): string {
+		const fileName = uri.split(/[\\/]/).pop()!;
 		return fileName.substring(0, fileName.lastIndexOf('.'));
 	}
 
-	/** Extracts the extension from a path, e.g. "folder/model.glb" -> "glb". */
-	static extension(path: string): string {
-		if (path.indexOf('data:') !== 0) {
-			path = new URL(path, NULL_DOMAIN).pathname;
-			return path.split(/[\\/]/).pop()!.split(/[.]/).pop()!;
-		} else if (path.indexOf('data:image/png') === 0) {
-			return 'png';
-		} else if (path.indexOf('data:image/jpeg') === 0) {
-			return 'jpeg';
-		} else {
+	/**
+	 * Extracts the extension from a file path, e.g. "folder/model.glb" -> "glb".
+	 * See: {@link HTTPUtils.extension}
+	 */
+	static extension(uri: string): string {
+		if (uri.startsWith('data:image/')) {
+			const mimeType = uri.match(/data:(image\/\w+)/)![1];
+			return ImageUtils.mimeTypeToExtension(mimeType);
+		} else if (uri.startsWith('data:model/gltf+json')) {
+			return 'gltf';
+		} else if (uri.startsWith('data:model/gltf-binary')) {
+			return 'glb';
+		} else if (uri.startsWith('data:application/')) {
 			return 'bin';
 		}
+		return uri.split(/[\\/]/).pop()!.split(/[.]/).pop()!;
 	}
 }

src/utils/http-utils.ts

@@ -1,2 +0,14 @@
-/** @internal */
+import { FileUtils } from './file-utils';
+
+// Need a placeholder domain to construct a URL from a relative path. We only
+// access `url.pathname`, so the domain doesn't matter.
+const NULL_DOMAIN = 'https://null.example';
+
+/**
+ * # HTTPUtils
+ *
+ * *Utility class for working with URLs.*
+ *
+ * @category Utilities
+ */
 export class HTTPUtils {
@@ -12,2 +24,18 @@ static readonly DEFAULT_INIT: RequestInit = {};
 
+	/**
+	 * Extracts the basename from a URL, e.g. "folder/model.glb" -> "model".
+	 * See: {@link FileUtils.basename}
+	 */
+	static basename(uri: string): string {
+		return FileUtils.basename(new URL(uri, NULL_DOMAIN).pathname);
+	}
+
+	/**
+	 * Extracts the extension from a URL, e.g. "folder/model.glb" -> "glb".
+	 * See: {@link FileUtils.extension}
+	 */
+	static extension(uri: string): string {
+		return FileUtils.extension(new URL(uri, NULL_DOMAIN).pathname);
+	}
+
 	static resolve(base: string, path: string) {
@@ -14,0 +42,0 @@ if (!this.isRelativePath(path)) return path;

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