@gltf-transform/core - npm Package Compare versions

Comparing version 0.7.0-alpha.1 to 0.7.0-alpha.2

dist/core.d.ts

@@ -7,2 +7,2 @@ export { Document, Transform } from './document';
 export { BufferUtils, ColorUtils, FileUtils, ImageUtils, MathUtils, Logger, uuid } from './utils/';
-export { PropertyType, vec2, vec3, vec4, mat3, mat4 } from './constants';
+export { TypedArray, PropertyType, vec2, vec3, vec4, mat3, mat4, GLB_BUFFER } from './constants';

dist/core.modern.js

@@ -1,2 +0,2 @@
-import{fromRotationTranslationScale as t,getTranslation as s,getRotation as e,getScaling as r,multiply as i}from"gl-matrix/mat4";function n(t,s,e,r){var i,n=arguments.length,h=n<3?s:null===r?r=Object.getOwnPropertyDescriptor(s,e):r;if("object"==typeof Reflect&&"function"==typeof Reflect.decorate)h=Reflect.decorate(t,s,e,r);else for(var o=t.length-1;o>=0;o--)(i=t[o])&&(h=(n<3?i(h):n>3?i(s,e,h):i(s,e))||h);return n>3&&h&&Object.defineProperty(s,e,h),h}var h;!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",t.TEXTURE_SAMPLER="TextureSampler"}(h||(h={}));class o{constructor(t,s,e){if(this.t=t,this.s=s,this.i=e,this.h=!1,this.o=[],!s.canLink(e))throw new Error("Cannot link disconnected graphs/documents.")}getName(){return this.t}getParent(){return this.s}getChild(){return this.i}setChild(t){return this.i=t,this}dispose(){this.h||(this.h=!0,this.o.forEach(t=>t()),this.o.length=0)}onDispose(t){return this.o.push(t),this}isDisposed(){return this.h}}class u{constructor(){this.u=[]}getLinks(){return this.u}listParents(t){return this.u.filter(s=>s.getChild()===t).map(t=>t.getParent())}listChildren(t){return this.u.filter(s=>s.getParent()===t).map(t=>t.getChild())}disconnectChildren(t){return this.u.filter(s=>s.getParent()===t).forEach(t=>t.dispose()),this}disconnectParents(t,s){let e=this.u.filter(s=>s.getChild()===t);return s&&(e=e.filter(t=>s(t.getParent()))),e.forEach(t=>t.dispose()),this}link(t,s,e){if(!e)return null;const r=new o(t,s,e);return this.registerLink(r),r}registerLink(t){return this.u.push(t),t.onDispose(()=>this.unlink(t)),t}unlink(t){return this.u=this.u.filter(s=>s!==t),this}}function c(t,s){Object.defineProperty(t,s,{get:function(){return this["__"+s]},set:function(t){const e=this["__"+s];e&&!Array.isArray(e)&&e.dispose(),t&&!Array.isArray(t)&&t.onDispose(()=>{this["__"+s]=null}),this["__"+s]=t},enumerable:!0})}function a(t,s){}class l{static createBufferFromDataURI(t){if("undefined"==typeof Buffer){const s=atob(t.split(",")[1]),e=new Uint8Array(s.length);for(let t=0;t<s.length;t++)e[t]=s.charCodeAt(t);return e.buffer}{const s=t.split(",")[1],e=t.indexOf("base64")>=0;return this.trim(Buffer.from(s,e?"base64":"utf8"))}}static encodeText(t){return"undefined"!=typeof TextEncoder?(new TextEncoder).encode(t).buffer:this.trim(Buffer.from(t))}static decodeText(t){return"undefined"!=typeof TextDecoder?(new TextDecoder).decode(t):Buffer.from(t).toString("utf8")}static trim(t){const{byteOffset:s,byteLength:e}=t;return t.buffer.slice(s,s+e)}static concat(t){let s=0;for(const e of t)s+=e.byteLength;const e=new Uint8Array(s);let r=0;for(const s of t)e.set(new Uint8Array(s),r),r+=s.byteLength;return e.buffer}static pad(t,s=0){const e=this.padNumber(t.byteLength);if(e!==t.byteLength){const r=new Uint8Array(e);if(r.set(new Uint8Array(t)),0!==s)for(let i=t.byteLength;i<e;i++)r[i]=s;return r.buffer}return t}static padNumber(t){return 4*Math.ceil(t/4)}static equals(t,s){if(t===s)return!0;if(t.byteLength!==s.byteLength)return!1;const e=new DataView(t),r=new DataView(s);let i=t.byteLength;for(;i--;)if(e.getUint8(i)!==r.getUint8(i))return!1;return!0}}class f{static hexToFactor(t,s){return t=Math.floor(t),s[0]=(t>>16&255)/255,s[1]=(t>>8&255)/255,s[2]=(255&t)/255,this.convertSRGBToLinear(s,s)}static factorToHex(t){const s=[...t],[e,r,i]=this.convertLinearToSRGB(t,s);return 255*e<<16^255*r<<8^255*i<<0}static convertSRGBToLinear(t,s){for(let e=0;e<3;e++)s[e]=t[e]<.04045?.0773993808*t[e]:Math.pow(.9478672986*t[e]+.0521327014,2.4);return s}static convertLinearToSRGB(t,s){for(let e=0;e<3;e++)s[e]=t[e]<.0031308?12.92*t[e]:1.055*Math.pow(t[e],.41666)-.055;return s}}class d{static basename(t){return t.split(/[\\/]/).pop().split(/[.]/).shift()}static extension(t){return 0!==t.indexOf("data:")?t.split(/[\\/]/).pop().split(/[.]/).pop():0===t.indexOf("data:image/png")?"png":0===t.indexOf("data:image/jpeg")?"jpeg":"bin"}}class p{static getSizeJPEG(t){let s,e,r=new DataView(t,4);for(;r.byteLength;){if(s=r.getUint16(0,!1),g(r,s),e=r.getUint8(s+1),192===e||193===e||194===e)return[r.getUint16(s+7,!1),r.getUint16(s+5,!1)];r=new DataView(t,r.byteOffset+s+2)}throw new TypeError("Invalid JPG, no size found")}static getSizePNG(t){const s=new DataView(t);return"CgBI"===l.decodeText(t.slice(12,16))?[s.getUint32(32,!1),s.getUint32(36,!1)]:[s.getUint32(16,!1),s.getUint32(20,!1)]}static mimeTypeToExtension(t){return"image/jpeg"===t?"jpg":t.split("/").pop()}static extensionToMimeType(t){return"jpg"===t?"image/jpeg":"image/"+t}}function g(t,s){if(s>t.byteLength)throw new TypeError("Corrupt JPG, exceeded buffer limits");if(255!==t.getUint8(s))throw new TypeError("Invalid JPG, marker table corrupted")}class w{static identity(t){return t}static denormalize(t,s){switch(s){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)}}static normalize(t,s){switch(s){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)}}}class m{constructor(t){this.verbosity=t}debug(t){this.verbosity<=m.Verbosity.DEBUG&&console.debug(t)}info(t){this.verbosity<=m.Verbosity.INFO&&console.info(t)}warn(t){this.verbosity<=m.Verbosity.WARN&&console.warn(t)}error(t){this.verbosity<=m.Verbosity.ERROR&&console.error(t)}}m.Verbosity={SILENT:4,ERROR:3,WARN:2,INFO:1,DEBUG:0},m.DEFAULT_INSTANCE=new m(m.Verbosity.INFO);const v="23456789abdegjkmnpqrvwxyzABDEGJKMNPQRVWXYZ",x=new Set,y=function(){let t="";for(let s=0;s<6;s++)t+=v.charAt(Math.floor(Math.random()*v.length));return t},T=function(){for(let t=0;t<999;t++){const t=y();if(!x.has(t))return x.add(t),t}},A=t=>t;class E extends class{constructor(t){this.h=!1,this.graph=t}canLink(t){return this.graph===t.graph}isDisposed(){return this.h}dispose(){this.graph.disconnectChildren(this),this.graph.disconnectParents(this),this.h=!0}detach(){return this.graph.disconnectParents(this),this}swap(t,s){return this.graph.getLinks().filter(s=>s.getParent()===this&&s.getChild()===t).forEach(t=>t.setChild(s)),this}addGraphChild(t,s){return t.push(s),s.onDispose(()=>{const e=t.filter(t=>t!==s);t.length=0,t.push(...e)}),this}removeGraphChild(t,s){return t.filter(t=>t.getChild()===s).forEach(t=>t.dispose()),this}clearGraphChildList(t){for(;t.length>0;)t[0].dispose();return this}listGraphParents(){return this.graph.listParents(this)}}{constructor(t,s=""){super(t),this.l={},this.t="",this.t=s}getName(){return this.t}setName(t){return this.t=t,this}getExtras(){return this.l}setExtras(t){return this.l=t,this}clone(){return new(0,this.constructor)(this.graph).copy(this,A)}copy(t,s){return this.t=t.t,this.l=JSON.parse(JSON.stringify(t.l)),this}detach(){return this.graph.disconnectParents(this,t=>"Root"!==t.propertyType),this}listParents(){return this.listGraphParents()}}const b="Pass extension name (string) as lookup token, not a constructor.";class S extends E{constructor(){super(...arguments),this.extensions=[]}copy(t,s=A){return super.copy(t,s),this.clearGraphChildList(this.extensions),t.extensions.forEach(t=>{const e=t.getChild();this.setExtension(e.extensionName,s(e))}),this}getExtension(t){if("string"!=typeof t)throw new Error(b);const s=this.extensions.find(s=>s.getChild().extensionName===t);return s?s.getChild():null}setExtension(t,s){if("string"!=typeof t)throw new Error(b);const e=this.getExtension(t);return e&&this.removeGraphChild(this.extensions,e),s?(s.p(this),this.addGraphChild(this.extensions,this.graph.link(t,this,s))):this}listExtensions(){return this.extensions.map(t=>t.getChild())}}n([a],S.prototype,"extensions",void 0);class M extends S{constructor(){super(...arguments),this.propertyType=h.ACCESSOR,this.g=null,this.m="SCALAR",this.v=null,this.T=!1,this.A=w.identity,this.S=w.identity,this.buffer=null}copy(t,s=A){return super.copy(t,s),this.g=t.g.slice(),this.m=t.m,this.v=t.v,this.T=t.T,this.A=t.A,this.S=t.S,t.buffer&&this.setBuffer(s(t.buffer.getChild())),this}static getElementSize(t){switch(t){case"SCALAR":return 1;case"VEC2":return 2;case"VEC3":return 3;case"VEC4":case"MAT2":return 4;case"MAT3":return 9;case"MAT4":return 16;default:throw new Error("Unexpected type: "+t)}}static getComponentSize(t){switch(t){case 5120:case 5121:return 1;case 5122:case 5123:return 2;case 5125:case 5126:return 4;default:throw new Error("Unexpected component type: "+t)}}getMinNormalized(t){const s=this.getElementSize();this.getMin(t);for(let e=0;e<s;e++)t[e]=this.S(t[e]);return t}getMin(t){const s=this.getCount(),e=this.getElementSize();for(let s=0;s<e;s++)t[s]=Infinity;for(let r=0;r<s*e;r+=e)for(let s=0;s<e;s++){const e=this.g[r+s];Number.isFinite(e)&&(t[s]=Math.min(t[s],e))}return t}getMaxNormalized(t){const s=this.getElementSize();this.getMax(t);for(let e=0;e<s;e++)t[e]=this.S(t[e]);return t}getMax(t){const s=this.getCount(),e=this.getElementSize();for(let s=0;s<e;s++)t[s]=-Infinity;for(let r=0;r<s*e;r+=e)for(let s=0;s<e;s++){const e=this.g[r+s];Number.isFinite(e)&&(t[s]=Math.max(t[s],e))}return t}getCount(){return this.g.length/this.getElementSize()}getType(){return this.m}setType(t){return this.m=t,this}getElementSize(){return M.getElementSize(this.m)}getComponentSize(){return this.g.BYTES_PER_ELEMENT}getComponentType(){return this.v}getNormalized(){return this.T}setNormalized(t){return this.T=t,t?(this.S=t=>w.denormalize(t,this.v),this.A=t=>w.normalize(t,this.v)):(this.S=w.identity,this.A=w.identity),this}getScalar(t){const s=this.getElementSize();return this.S(this.g[t*s])}setScalar(t,s){return this.g[t*this.getElementSize()]=this.A(s),this}getElement(t,s){const e=this.getElementSize();for(let r=0;r<e;r++)s[r]=this.S(this.g[t*e+r]);return s}setElement(t,s){const e=this.getElementSize();for(let r=0;r<e;r++)this.g[t*e+r]=this.A(s[r]);return this}getBuffer(){return this.buffer?this.buffer.getChild():null}setBuffer(t){return this.buffer=this.graph.link("buffer",this,t),this}getArray(){return this.g}setArray(t){return this.v=function(t){switch(t.constructor){case Float32Array:return 5126;case Uint32Array:return 5125;case Uint16Array:return 5123;case Uint8Array:return 5121;case Int16Array:return 5122;case Int8Array:return 5120;default:throw new Error("Unknown accessor componentType.")}}(t),this.g=t,this}getByteLength(){return this.g.byteLength}}M.Type={SCALAR:"SCALAR",VEC2:"VEC2",VEC3:"VEC3",VEC4:"VEC4",MAT3:"MAT3",MAT4:"MAT4"},M.ComponentType={BYTE:5120,UNSIGNED_BYTE:5121,SHORT:5122,UNSIGNED_SHORT:5123,UNSIGNED_INT:5125,FLOAT:5126},n([c],M.prototype,"buffer",void 0);class N extends S{constructor(){super(...arguments),this.propertyType=h.ANIMATION,this.channels=[],this.samplers=[]}copy(t,s=A){return super.copy(t,s),this.clearGraphChildList(this.channels),this.clearGraphChildList(this.samplers),t.channels.forEach(t=>this.addChannel(s(t.getChild()))),t.samplers.forEach(t=>this.addSampler(s(t.getChild()))),this}addChannel(t){const s=this.graph.link("channel",this,t);return this.addGraphChild(this.channels,s)}removeChannel(t){return this.removeGraphChild(this.channels,t)}listChannels(){return this.channels.map(t=>t.getChild())}addSampler(t){const s=this.graph.link("sampler",this,t);return this.addGraphChild(this.samplers,s)}removeSampler(t){return this.removeGraphChild(this.samplers,t)}listSamplers(){return this.samplers.map(t=>t.getChild())}}n([a],N.prototype,"channels",void 0),n([a],N.prototype,"samplers",void 0);class R extends E{constructor(){super(...arguments),this.propertyType=h.ANIMATION_CHANNEL,this.M=null,this.targetNode=null,this.sampler=null}copy(t,s=A){return super.copy(t,s),this.M=t.M,t.targetNode&&this.setTargetNode(s(t.targetNode.getChild())),t.sampler&&this.setSampler(s(t.sampler.getChild())),this}getTargetPath(){return this.M}setTargetPath(t){return this.M=t,this}getTargetNode(){return this.targetNode?this.targetNode.getChild():null}setTargetNode(t){return this.targetNode=this.graph.link("target.node",this,t),this}getSampler(){return this.sampler?this.sampler.getChild():null}setSampler(t){return this.sampler=this.graph.link("sampler",this,t),this}}n([c],R.prototype,"targetNode",void 0),n([c],R.prototype,"sampler",void 0);class C extends E{constructor(){super(...arguments),this.propertyType=h.ANIMATION_SAMPLER,this.N="LINEAR",this.input=null,this.output=null}copy(t,s=A){return super.copy(t,s),this.N=t.N,t.input&&this.setInput(s(t.input.getChild())),t.output&&this.setOutput(s(t.output.getChild())),this}getInterpolation(){return this.N}setInterpolation(t){return this.N=t,this}getInput(){return this.input?this.input.getChild():null}setInput(t){return this.input=this.graph.link("input",this,t),this}getOutput(){return this.output?this.output.getChild():null}setOutput(t){return this.output=this.graph.link("output",this,t),this}}n([c],C.prototype,"input",void 0),n([c],C.prototype,"output",void 0);class I extends S{constructor(){super(...arguments),this.propertyType=h.BUFFER}copy(t,s=A){return super.copy(t,s),this.R=t.R,this}getURI(){return this.R}setURI(t){return this.R=t,this}}class _ extends S{constructor(){super(...arguments),this.propertyType=h.CAMERA,this.m="perspective"}copy(t,s=A){return super.copy(t,s),this.m=t.m,this.C=t.C,this.I=t.I,this._=t._,this.B=t.B,this.L=t.L,this.O=t.O,this}getType(){return this.m}setType(t){return this.m=t,this}getZNear(){return this.C}setZNear(t){return this.C=t,this}getZFar(){return this.I}setZFar(t){return this.I=t,this}getAspectRatio(){return this._}setAspectRatio(t){return this._=t,this}getYFov(){return this.B}setYFov(t){return this.B=t,this}getXMag(){return this.L}setXMag(t){return this.L=t,this}getYMag(){return this.O}setYMag(t){return this.O=t,this}}class B extends E{constructor(t,s){super(t),this.k=s,this.k.addExtensionProperty(this)}dispose(){this.k.removeExtensionProperty(this),super.dispose()}p(t){if(!this.parentTypes.includes(t.propertyType))throw new Error(`Parent "${t.propertyType}" invalid for child "${this.propertyType}".`)}}class L{constructor(){this.propertyType=h.TEXTURE_INFO,this.texCoord=0}copy(t){return this.texCoord=t.texCoord,this}getTexCoord(){return this.texCoord}setTexCoord(t){return this.texCoord=t,this}}class O{constructor(){this.propertyType=h.TEXTURE_SAMPLER,this.U=null,this.P=null,this.F=10497,this.G=10497}copy(t){return this.U=t.U,this.P=t.P,this.F=t.F,this.G=t.G,this}getMagFilter(){return this.U}setMagFilter(t){return this.U=t,this}getMinFilter(){return this.P}setMinFilter(t){return this.P=t,this}getWrapS(){return this.F}setWrapS(t){return this.F=t,this}getWrapT(){return this.G}setWrapT(t){return this.G=t,this}}O.TextureWrapMode={CLAMP_TO_EDGE:33071,MIRRORED_REPEAT:33648,REPEAT:10497},O.TextureMagFilter={NEAREST:9728,LINEAR:9729},O.TextureMinFilter={NEAREST:9728,LINEAR:9729,NEAREST_MIPMAP_NEAREST:9984,LINEAR_MIPMAP_NEAREST:9985,NEAREST_MIPMAP_LINEAR:9986,LINEAR_MIPMAP_LINEAR:9987};class k extends o{constructor(){super(...arguments),this.textureInfo=new L,this.sampler=new O}copy(t){return this.textureInfo.copy(t.textureInfo),this.sampler.copy(t.sampler),this}}class U extends o{constructor(){super(...arguments),this.semantic=""}copy(t){return this.semantic=t.semantic,this}}class P extends o{copy(t){return this}}class F extends u{linkTexture(t,s,e){if(!e)return null;const r=new k(t,s,e);return this.registerLink(r),r}linkAttribute(t,s,e){if(!e)return null;const r=new U(t,s,e);return this.registerLink(r),r}linkIndex(t,s,e){if(!e)return null;const r=new P(t,s,e);return this.registerLink(r),r}}class G extends S{constructor(){super(...arguments),this.propertyType=h.MATERIAL,this.j="OPAQUE",this.D=.5,this.J=!1,this.$=[1,1,1,1],this.V=[0,0,0],this.W=1,this.q=1,this.H=1,this.Y=1,this.baseColorTexture=null,this.emissiveTexture=null,this.normalTexture=null,this.occlusionTexture=null,this.metallicRoughnessTexture=null}copy(t,s=A){return super.copy(t,s),this.j=t.j,this.D=t.D,this.J=t.J,this.$=[...t.$],this.V=[...t.V],this.W=t.W,this.q=t.q,this.H=t.H,this.Y=t.Y,t.baseColorTexture&&(this.setBaseColorTexture(s(t.baseColorTexture.getChild())),this.baseColorTexture.copy(t.baseColorTexture)),t.emissiveTexture&&(this.setEmissiveTexture(s(t.emissiveTexture.getChild())),this.emissiveTexture.copy(t.emissiveTexture)),t.normalTexture&&(this.setNormalTexture(s(t.normalTexture.getChild())),this.normalTexture.copy(t.normalTexture)),t.occlusionTexture&&(this.setOcclusionTexture(s(t.occlusionTexture.getChild())),this.occlusionTexture.copy(t.occlusionTexture)),t.metallicRoughnessTexture&&(this.setMetallicRoughnessTexture(s(t.metallicRoughnessTexture.getChild())),this.metallicRoughnessTexture.copy(t.metallicRoughnessTexture)),this}getDoubleSided(){return this.J}setDoubleSided(t){return this.J=t,this}getAlpha(){return this.$[3]}setAlpha(t){return this.$[3]=t,this}getAlphaMode(){return this.j}setAlphaMode(t){return this.j=t,this}getAlphaCutoff(){return this.D}setAlphaCutoff(t){return this.D=t,this}getBaseColorFactor(){return this.$}setBaseColorFactor(t){return this.$=t,this}getBaseColorHex(){return f.factorToHex(this.$)}setBaseColorHex(t){return f.hexToFactor(t,this.$),this}getBaseColorTexture(){return this.baseColorTexture?this.baseColorTexture.getChild():null}getBaseColorTextureInfo(){return this.baseColorTexture?this.baseColorTexture.textureInfo:null}getBaseColorTextureSampler(){return this.baseColorTexture?this.baseColorTexture.sampler:null}setBaseColorTexture(t){return this.baseColorTexture=this.graph.linkTexture("baseColorTexture",this,t),this}getEmissiveFactor(){return this.V}setEmissiveFactor(t){return this.V=t,this}getEmissiveHex(){return f.factorToHex(this.V)}setEmissiveHex(t){return f.hexToFactor(t,this.V),this}getEmissiveTexture(){return this.emissiveTexture?this.emissiveTexture.getChild():null}getEmissiveTextureInfo(){return this.emissiveTexture?this.emissiveTexture.textureInfo:null}getEmissiveTextureSampler(){return this.emissiveTexture?this.emissiveTexture.sampler:null}setEmissiveTexture(t){return this.emissiveTexture=this.graph.linkTexture("emissiveTexture",this,t),this}getNormalScale(){return this.W}setNormalScale(t){return this.W=t,this}getNormalTexture(){return this.normalTexture?this.normalTexture.getChild():null}getNormalTextureInfo(){return this.normalTexture?this.normalTexture.textureInfo:null}getNormalTextureSampler(){return this.normalTexture?this.normalTexture.sampler:null}setNormalTexture(t){return this.normalTexture=this.graph.linkTexture("normalTexture",this,t),this}getOcclusionStrength(){return this.q}setOcclusionStrength(t){return this.q=t,this}getOcclusionTexture(){return this.occlusionTexture?this.occlusionTexture.getChild():null}getOcclusionTextureInfo(){return this.occlusionTexture?this.occlusionTexture.textureInfo:null}getOcclusionTextureSampler(){return this.occlusionTexture?this.occlusionTexture.sampler:null}setOcclusionTexture(t){return this.occlusionTexture=this.graph.linkTexture("occlusionTexture",this,t),this}getRoughnessFactor(){return this.H}setRoughnessFactor(t){return this.H=t,this}getMetallicFactor(){return this.Y}setMetallicFactor(t){return this.Y=t,this}getMetallicRoughnessTexture(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.getChild():null}getMetallicRoughnessTextureInfo(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.textureInfo:null}getMetallicRoughnessTextureSampler(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.sampler:null}setMetallicRoughnessTexture(t){return this.metallicRoughnessTexture=this.graph.linkTexture("metallicRoughnessTexture",this,t),this}}n([c],G.prototype,"baseColorTexture",void 0),n([c],G.prototype,"emissiveTexture",void 0),n([c],G.prototype,"normalTexture",void 0),n([c],G.prototype,"occlusionTexture",void 0),n([c],G.prototype,"metallicRoughnessTexture",void 0);class j extends S{constructor(){super(...arguments),this.propertyType=h.MESH,this.Z=[],this.primitives=[]}copy(t,s=A){return super.copy(t,s),this.Z=[...t.Z],this.clearGraphChildList(this.primitives),t.primitives.forEach(t=>this.addPrimitive(s(t.getChild()))),this}addPrimitive(t){return this.addGraphChild(this.primitives,this.graph.link("primitive",this,t))}removePrimitive(t){return this.removeGraphChild(this.primitives,t)}listPrimitives(){return this.primitives.map(t=>t.getChild())}getWeights(){return this.Z}setWeights(t){return this.Z=t,this}}n([a],j.prototype,"primitives",void 0);class D extends S{constructor(){super(...arguments),this.propertyType=h.NODE,this.X=[0,0,0],this.K=[0,0,0,1],this.tt=[1,1,1],this.Z=[],this.s=null,this.camera=null,this.mesh=null,this.skin=null,this.children=[]}copy(t,s=A){return super.copy(t,s),this.X=[...t.X],this.K=[...t.K],this.tt=[...t.tt],this.Z=[...t.Z],t.camera&&this.setCamera(s(t.camera.getChild())),t.mesh&&this.setMesh(s(t.mesh.getChild())),t.skin&&this.setSkin(s(t.skin.getChild())),s!==A&&(this.clearGraphChildList(this.children),t.children.forEach(t=>this.addChild(s(t.getChild())))),this}getTranslation(){return this.X}getRotation(){return this.K}getScale(){return this.tt}setTranslation(t){return this.X=t,this}setRotation(t){return this.K=t,this}setScale(t){return this.tt=t,this}getMatrix(){return t([],this.K,this.X,this.tt)}getWorldTranslation(){return s([],this.getWorldMatrix())}getWorldRotation(){return e([],this.getWorldMatrix())}getWorldScale(){return r([],this.getWorldMatrix())}getWorldMatrix(){const t=[];for(let s=this;s instanceof D;s=s.s)t.push(s);let s;const e=t.pop().getMatrix();for(;s=t.pop();)i(e,e,s.getMatrix());return e}addChild(t){t.s&&t.s.removeChild(t);const s=this.graph.link("child",this,t);return this.addGraphChild(this.children,s),t.s=this,s.onDispose(()=>t.s=null),this}removeChild(t){return this.removeGraphChild(this.children,t)}listChildren(){return this.children.map(t=>t.getChild())}getParent(){return this.s}getMesh(){return this.mesh?this.mesh.getChild():null}setMesh(t){return this.mesh=this.graph.link("mesh",this,t),this}getCamera(){return this.camera?this.camera.getChild():null}setCamera(t){return this.camera=this.graph.link("camera",this,t),this}getSkin(){return this.skin?this.skin.getChild():null}setSkin(t){return this.skin=this.graph.link("skin",this,t),this}getWeights(){return this.Z}setWeights(t){return this.Z=t,this}traverse(t){t(this);for(const s of this.listChildren())s.traverse(t);return this}}n([c],D.prototype,"camera",void 0),n([c],D.prototype,"mesh",void 0),n([c],D.prototype,"skin",void 0),n([a],D.prototype,"children",void 0);class J extends E{constructor(){super(...arguments),this.propertyType=h.PRIMITIVE,this.st=4,this.material=null,this.indices=null,this.attributes=[],this.targets=[]}copy(t,s=A){return super.copy(t,s),this.st=t.st,t.indices&&this.setIndices(s(t.indices.getChild())),t.material&&this.setMaterial(s(t.material.getChild())),this.clearGraphChildList(this.attributes),t.listSemantics().forEach(e=>{this.setAttribute(e,s(t.getAttribute(e)))}),this.clearGraphChildList(this.targets),t.targets.forEach(t=>this.addTarget(s(t.getChild()))),this}getIndices(){return this.indices?this.indices.getChild():null}setIndices(t){return this.indices=this.graph.linkIndex("index",this,t),this}getAttribute(t){const s=this.attributes.find(s=>s.semantic===t);return s?s.getChild():null}setAttribute(t,s){const e=this.getAttribute(t);if(e&&this.removeGraphChild(this.attributes,e),!s)return this;const r=this.graph.linkAttribute(t.toLowerCase(),this,s);return r.semantic=t,this.addGraphChild(this.attributes,r)}listAttributes(){return this.attributes.map(t=>t.getChild())}listSemantics(){return this.attributes.map(t=>t.semantic)}getMaterial(){return this.material?this.material.getChild():null}setMaterial(t){return this.material=this.graph.link("material",this,t),this}getMode(){return this.st}setMode(t){return this.st=t,this}listTargets(){return this.targets.map(t=>t.getChild())}addTarget(t){return this.addGraphChild(this.targets,this.graph.link("target",this,t)),this}removeTarget(t){return this.removeGraphChild(this.targets,t)}}n([c],J.prototype,"material",void 0),n([c],J.prototype,"indices",void 0),n([a],J.prototype,"attributes",void 0),n([a],J.prototype,"targets",void 0);class $ extends E{constructor(){super(...arguments),this.propertyType=h.PRIMITIVE_TARGET,this.attributes=[]}copy(t,s=A){return super.copy(t,s),this.clearGraphChildList(this.attributes),t.listSemantics().forEach(e=>{this.setAttribute(e,s(t.getAttribute(e)))}),this}getAttribute(t){const s=this.attributes.find(s=>s.semantic===t);return s?s.getChild():null}setAttribute(t,s){const e=this.getAttribute(t);if(e&&this.removeGraphChild(this.attributes,e),!s)return this;const r=this.graph.linkAttribute(t.toLowerCase(),this,s);return r.semantic=t,this.addGraphChild(this.attributes,r)}listAttributes(){return this.attributes.map(t=>t.getChild())}listSemantics(){return this.attributes.map(t=>t.semantic)}}n([a],$.prototype,"attributes",void 0);class z extends E{constructor(){super(...arguments),this.propertyType=h.ROOT,this.et={generator:"glTF-Transform v0.7.0-alpha.1",version:"2.0"},this.rt=new Set,this.accessors=[],this.animations=[],this.buffers=[],this.cameras=[],this.materials=[],this.meshes=[],this.nodes=[],this.scenes=[],this.skins=[],this.textures=[]}clone(){throw new Error("Root cannot be cloned.")}copy(t,s=A){if(super.copy(t,s),!s)throw new Error("Root cannot be copied.");return Object.assign(this.et,t.et),t.accessors.forEach(t=>this.it(s(t.getChild()))),t.animations.forEach(t=>this.nt(s(t.getChild()))),t.buffers.forEach(t=>this.ht(s(t.getChild()))),t.cameras.forEach(t=>this.ot(s(t.getChild()))),t.materials.forEach(t=>this.ut(s(t.getChild()))),t.meshes.forEach(t=>this.ct(s(t.getChild()))),t.nodes.forEach(t=>this.at(s(t.getChild()))),t.scenes.forEach(t=>this.lt(s(t.getChild()))),t.skins.forEach(t=>this.ft(s(t.getChild()))),t.textures.forEach(t=>this.dt(s(t.getChild()))),this}getAsset(){return this.et}listExtensionsUsed(){return Array.from(this.rt)}listExtensionsRequired(){return this.listExtensionsUsed().filter(t=>t.isRequired())}pt(t){if(this.rt.has(t))throw new Error(`Extension "${t.extensionName}" is already enabled.`);return this.rt.add(t),this}gt(t){return this.rt.delete(t),this}lt(t){return this.addGraphChild(this.scenes,this.graph.link("scene",this,t))}listScenes(){return this.scenes.map(t=>t.getChild())}at(t){return this.addGraphChild(this.nodes,this.graph.link("node",this,t))}listNodes(){return this.nodes.map(t=>t.getChild())}ot(t){return this.addGraphChild(this.cameras,this.graph.link("camera",this,t))}listCameras(){return this.cameras.map(t=>t.getChild())}ft(t){return this.addGraphChild(this.skins,this.graph.link("skin",this,t))}listSkins(){return this.skins.map(t=>t.getChild())}ct(t){return this.addGraphChild(this.meshes,this.graph.link("mesh",this,t))}listMeshes(){return this.meshes.map(t=>t.getChild())}ut(t){return this.addGraphChild(this.materials,this.graph.link("material",this,t))}listMaterials(){return this.materials.map(t=>t.getChild())}dt(t){return this.addGraphChild(this.textures,this.graph.link("texture",this,t))}listTextures(){return this.textures.map(t=>t.getChild())}nt(t){return this.addGraphChild(this.animations,this.graph.link("animation",this,t))}listAnimations(){return this.animations.map(t=>t.getChild())}it(t){return this.addGraphChild(this.accessors,this.graph.link("accessor",this,t))}listAccessors(){return this.accessors.map(t=>t.getChild())}ht(t){return this.addGraphChild(this.buffers,this.graph.link("buffer",this,t))}listBuffers(){return this.buffers.map(t=>t.getChild())}}n([a],z.prototype,"accessors",void 0),n([a],z.prototype,"animations",void 0),n([a],z.prototype,"buffers",void 0),n([a],z.prototype,"cameras",void 0),n([a],z.prototype,"materials",void 0),n([a],z.prototype,"meshes",void 0),n([a],z.prototype,"nodes",void 0),n([a],z.prototype,"scenes",void 0),n([a],z.prototype,"skins",void 0),n([a],z.prototype,"textures",void 0);class V extends S{constructor(){super(...arguments),this.propertyType=h.SCENE,this.children=[]}copy(t,s=A){return super.copy(t,s),s!==A&&(this.clearGraphChildList(this.children),t.children.forEach(t=>this.addChild(s(t.getChild())))),this}addChild(t){t.s&&t.s.removeChild(t);const s=this.graph.link("child",this,t);return this.addGraphChild(this.children,s),t.s=this,s.onDispose(()=>t.s=null),this}removeChild(t){return this.removeGraphChild(this.children,t)}listChildren(){return this.children.map(t=>t.getChild())}traverse(t){for(const s of this.listChildren())s.traverse(t);return this}}n([a],V.prototype,"children",void 0);class W extends S{constructor(){super(...arguments),this.propertyType=h.SKIN,this.skeleton=null,this.inverseBindMatrices=null,this.joints=[]}copy(t,s=A){return super.copy(t,s),t.skeleton&&this.setSkeleton(s(t.skeleton.getChild())),t.inverseBindMatrices&&this.setInverseBindMatrices(s(t.inverseBindMatrices.getChild())),this.clearGraphChildList(this.joints),t.joints.forEach(t=>this.addJoint(s(t.getChild()))),this}getSkeleton(){return this.skeleton?this.skeleton.getChild():null}setSkeleton(t){return this.skeleton=this.graph.link("skeleton",this,t),this}getInverseBindMatrices(){return this.inverseBindMatrices?this.inverseBindMatrices.getChild():null}setInverseBindMatrices(t){return this.inverseBindMatrices=this.graph.link("inverseBindMatrices",this,t),this}addJoint(t){const s=this.graph.link("joint",this,t);return this.addGraphChild(this.joints,s)}removeJoint(t){return this.removeGraphChild(this.joints,t)}listJoints(){return this.joints.map(t=>t.getChild())}}n([c],W.prototype,"skeleton",void 0),n([c],W.prototype,"inverseBindMatrices",void 0),n([a],W.prototype,"joints",void 0);class q extends S{constructor(){super(...arguments),this.propertyType=h.TEXTURE,this.image=null,this.mimeType="",this.uri=""}copy(t,s=A){return super.copy(t,s),this.mimeType=t.mimeType,this.uri=t.uri,t.image&&(this.image=t.image.slice(0)),this}getMimeType(){return this.mimeType}setMimeType(t){return this.mimeType=t,this}getURI(){return this.uri}setURI(t){return this.uri=t,this}getImage(){return this.image}setImage(t){return this.image=t,this}getSize(){let t;return t=this.mimeType?"image/png"===this.mimeType:this.uri.match(/\.png$/),t?p.getSizePNG(this.image):p.getSizeJPEG(this.image)}}class H{constructor(){this.wt=new F,this.vt=new z(this.wt),this.xt=m.DEFAULT_INSTANCE}getRoot(){return this.vt}getGraph(){return this.wt}getLogger(){return this.xt}setLogger(t){return this.xt=t,this}clone(){return(new H).merge(this)}merge(t){const s={};for(const e of t.getRoot().listExtensionsUsed()){const t=this.createExtension(e.constructor);e.isRequired()&&t.setRequired(!0),s[t.extensionName]=t}const e=new Set,r=new Map;e.add(t.vt),r.set(t.vt,this.vt);for(const i of t.wt.getLinks())for(const t of[i.getParent(),i.getChild()])if(!e.has(t)){const i=t.constructor,n=t instanceof B?new i(this.wt,s[t.extensionName]):new i(this.wt);r.set(t,n),e.add(t)}const i=t=>r.get(t);for(const t of e)r.get(t).copy(t,i);return this}async transform(...t){for(const s of t)await s(this);return this}createExtension(t){return this.getRoot().listExtensionsUsed().find(s=>s.extensionName===t.EXTENSION_NAME)||new t(this)}createScene(t=""){const s=new V(this.wt,t);return this.vt.lt(s),s}createNode(t=""){const s=new D(this.wt,t);return this.vt.at(s),s}createCamera(t=""){const s=new _(this.wt,t);return this.vt.ot(s),s}createSkin(t=""){const s=new W(this.wt,t);return this.vt.ft(s),s}createMesh(t=""){const s=new j(this.wt,t);return this.vt.ct(s),s}createPrimitive(){return new J(this.wt)}createPrimitiveTarget(t=""){return new $(this.wt,t)}createMaterial(t=""){const s=new G(this.wt,t);return this.vt.ut(s),s}createTexture(t=""){const s=new q(this.wt,t);return this.vt.dt(s),s}createAnimation(t=""){const s=new N(this.wt,t);return this.vt.nt(s),s}createAnimationChannel(){return new R(this.wt)}createAnimationSampler(){return new C(this.wt)}createAccessor(t="",s=null){s||(s=this.getRoot().listBuffers()[0]);const e=new M(this.wt,t).setBuffer(s);return this.vt.it(e),e}createBuffer(t=""){const s=new I(this.wt,t);return this.vt.ht(s),s}}class Y{constructor(t){this.doc=t,this.provideTypes=[],this.required=!1,this.properties=new Set,t.getRoot().pt(this)}dispose(){this.doc.getRoot().gt(this);for(const t of this.properties)t.dispose()}isRequired(){return this.required}setRequired(t){return this.required=t,this}addExtensionProperty(t){return this.properties.add(t),this}removeExtensionProperty(t){return this.properties.delete(t),this}provide(t,s){return this}}class Z{constructor(t){this.jsonDoc=t,this.buffers=[],this.bufferViewBuffers=[],this.accessors=[],this.textures=[],this.materials=[],this.meshes=[],this.cameras=[],this.nodes=[],this.skins=[],this.animations=[],this.scenes=[]}setTextureInfo(t,s){void 0!==s.texCoord&&t.setTexCoord(s.texCoord)}setTextureSampler(t,s){const e=this.jsonDoc.json.textures[s.index];if(void 0===e.sampler)return;const r=this.jsonDoc.json.samplers[e.sampler];void 0!==r.magFilter&&t.setMagFilter(r.magFilter),void 0!==r.minFilter&&t.setMinFilter(r.minFilter),void 0!==r.wrapS&&t.setWrapS(r.wrapS),void 0!==r.wrapT&&t.setWrapT(r.wrapT)}}const X={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},K={logger:m.DEFAULT_INSTANCE,extensions:[]};class Q{static read(t,i=K){const{json:n}=t,o=new H;this.validate(t,i);const u=new Z(t),c=t.json.asset,a=o.getRoot().getAsset();c.copyright&&(a.copyright=c.copyright),c.extras&&(a.extras=c.extras),c.generator&&(a.generator=c.generator),c.minVersion&&(a.minVersion=c.minVersion);const l=n.extensionsUsed||[],f=n.extensionsRequired||[];for(const t of i.extensions)l.includes(t.EXTENSION_NAME)&&o.createExtension(t).setRequired(f.includes(t.EXTENSION_NAME));u.buffers=(n.buffers||[]).map(t=>{const s=o.createBuffer(t.name);return t.extras&&s.setExtras(t.extras),t.uri&&0!==t.uri.indexOf("__")&&s.setURI(t.uri),s}),u.bufferViewBuffers=(n.bufferViews||[]).map(t=>u.buffers[t.buffer]),u.accessors=(n.accessors||[]).map(s=>{const e=o.createAccessor(s.name,u.bufferViewBuffers[s.bufferView]).setType(s.type);let r;return s.extras&&e.setExtras(s.extras),r=void 0!==s.sparse?function(t,s){const e=X[t.componentType],r=M.getElementSize(t.type);let i;i=void 0!==t.bufferView?tt(t,s).slice():new e(t.count*r);const n=t.sparse.count,h={...t,...t.sparse.indices,count:n,type:"SCALAR"},o={...t,...t.sparse.values,count:n},u=tt(h,s),c=tt(o,s);for(let t=0;t<h.count;t++)for(let s=0;s<r;s++)i[u[t]*r+s]=c[t*r+s];return i}(s,t):tt(s,t).slice(),void 0!==s.normalized&&e.setNormalized(s.normalized),e.setArray(r),e});const g=n.images||[],w=n.textures||[];o.getRoot().listExtensionsUsed().filter(t=>t.provideTypes.includes(h.TEXTURE)).forEach(t=>t.provide(u,h.TEXTURE)),u.textures=g.map(s=>{const e=o.createTexture(s.name);if(s.extras&&e.setExtras(s.extras),void 0!==s.bufferView){const r=n.bufferViews[s.bufferView],i=t.json.buffers[r.buffer],h=r.byteOffset||0,o=(i.uri?t.resources[i.uri]:t.resources["yt"]).slice(h,h+r.byteLength);e.setImage(o)}else void 0!==s.uri&&(e.setImage(t.resources[s.uri]),0!==s.uri.indexOf("__")&&e.setURI(s.uri));if(void 0!==s.mimeType)e.setMimeType(s.mimeType);else if(s.uri){const t=d.extension(s.uri);e.setMimeType(p.extensionToMimeType(t))}return e}),u.materials=(n.materials||[]).map(t=>{const s=o.createMaterial(t.name);t.extras&&s.setExtras(t.extras),void 0!==t.alphaMode&&s.setAlphaMode(t.alphaMode),void 0!==t.alphaCutoff&&s.setAlphaCutoff(t.alphaCutoff),void 0!==t.doubleSided&&s.setDoubleSided(t.doubleSided);const e=t.pbrMetallicRoughness||{};if(void 0!==e.baseColorFactor&&s.setBaseColorFactor(e.baseColorFactor),void 0!==t.emissiveFactor&&s.setEmissiveFactor(t.emissiveFactor),void 0!==e.metallicFactor&&s.setMetallicFactor(e.metallicFactor),void 0!==e.roughnessFactor&&s.setRoughnessFactor(e.roughnessFactor),void 0!==e.baseColorTexture){const t=e.baseColorTexture;s.setBaseColorTexture(u.textures[w[t.index].source]),u.setTextureInfo(s.getBaseColorTextureInfo(),t),u.setTextureSampler(s.getBaseColorTextureSampler(),t)}if(void 0!==t.emissiveTexture){const e=t.emissiveTexture;s.setEmissiveTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getEmissiveTextureInfo(),e),u.setTextureSampler(s.getEmissiveTextureSampler(),e)}if(void 0!==t.normalTexture){const e=t.normalTexture;s.setNormalTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getNormalTextureInfo(),e),u.setTextureSampler(s.getNormalTextureSampler(),e),void 0!==t.normalTexture.scale&&s.setNormalScale(t.normalTexture.scale)}if(void 0!==t.occlusionTexture){const e=t.occlusionTexture;s.setOcclusionTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getOcclusionTextureInfo(),e),u.setTextureSampler(s.getOcclusionTextureSampler(),e),void 0!==t.occlusionTexture.strength&&s.setOcclusionStrength(t.occlusionTexture.strength)}if(void 0!==e.metallicRoughnessTexture){const t=e.metallicRoughnessTexture;s.setMetallicRoughnessTexture(u.textures[w[t.index].source]),u.setTextureInfo(s.getMetallicRoughnessTextureInfo(),t),u.setTextureSampler(s.getMetallicRoughnessTextureSampler(),t)}return s}),u.meshes=(n.meshes||[]).map(t=>{const s=o.createMesh(t.name);return t.extras&&s.setExtras(t.extras),void 0!==t.weights&&s.setWeights(t.weights),t.primitives.forEach(e=>{const r=o.createPrimitive();e.extras&&r.setExtras(e.extras),void 0!==e.material&&r.setMaterial(u.materials[e.material]),void 0!==e.mode&&r.setMode(e.mode);for(const[t,s]of Object.entries(e.attributes||{}))r.setAttribute(t,u.accessors[s]);void 0!==e.indices&&r.setIndices(u.accessors[e.indices]);const i=t.extras&&t.extras.targetNames||[];(e.targets||[]).forEach((t,s)=>{const e=i[s]||s.toString(),n=o.createPrimitiveTarget(e);for(const[s,e]of Object.entries(t))n.setAttribute(s,u.accessors[e]);r.addTarget(n)}),s.addPrimitive(r)}),s}),u.cameras=(n.cameras||[]).map(t=>{const s=o.createCamera(t.name).setType(t.type);return t.extras&&s.setExtras(t.extras),"perspective"===t.type?s.setZNear(t.perspective.znear).setZFar(t.perspective.zfar).setYFov(t.perspective.yfov).setAspectRatio(t.perspective.aspectRatio):s.setZNear(t.orthographic.znear).setZFar(t.orthographic.zfar).setXMag(t.orthographic.xmag).setYMag(t.orthographic.ymag),s});const m=n.nodes||[];return u.nodes=m.map(t=>{const i=o.createNode(t.name);return t.extras&&i.setExtras(t.extras),void 0!==t.translation&&i.setTranslation(t.translation),void 0!==t.rotation&&i.setRotation(t.rotation),void 0!==t.scale&&i.setScale(t.scale),void 0!==t.matrix&&(i.setTranslation(s([],t.matrix)),i.setRotation(e([],t.matrix)),i.setScale(r([],t.matrix))),void 0!==t.weights&&i.setWeights(t.weights),i}),u.skins=(n.skins||[]).map(t=>{const s=o.createSkin(t.name);t.extras&&s.setExtras(t.extras),void 0!==t.inverseBindMatrices&&s.setInverseBindMatrices(u.accessors[t.inverseBindMatrices]),void 0!==t.skeleton&&s.setSkeleton(u.nodes[t.skeleton]);for(const e of t.joints)s.addJoint(u.nodes[e]);return s}),m.map((t,s)=>{const e=u.nodes[s];(t.children||[]).forEach(t=>e.addChild(u.nodes[t])),void 0!==t.mesh&&e.setMesh(u.meshes[t.mesh]),void 0!==t.camera&&e.setCamera(u.cameras[t.camera]),void 0!==t.skin&&e.setSkin(u.skins[t.skin])}),u.animations=(n.animations||[]).map(t=>{const s=o.createAnimation(t.name);t.extras&&s.setExtras(t.extras);const e=(t.samplers||[]).map(t=>{const e=o.createAnimationSampler().setInput(u.accessors[t.input]).setOutput(u.accessors[t.output]).setInterpolation(t.interpolation||"LINEAR");return t.extras&&e.setExtras(t.extras),s.addSampler(e),e});return(t.channels||[]).forEach(t=>{const r=o.createAnimationChannel().setSampler(e[t.sampler]).setTargetNode(u.nodes[t.target.node]).setTargetPath(t.target.path);t.extras&&r.setExtras(t.extras),s.addChannel(r)}),s}),u.scenes=(n.scenes||[]).map(t=>{const s=o.createScene(t.name);return t.extras&&s.setExtras(t.extras),(t.nodes||[]).map(t=>u.nodes[t]).forEach(t=>s.addChild(t)),s}),o.getRoot().listExtensionsUsed().forEach(t=>t.read(u)),o}static validate(t,s){const e=t.json;if("2.0"!==e.asset.version)throw new Error(`Unsupported glTF version, "${e.asset.version}".`);if(e.extensionsRequired)for(const t of e.extensionsRequired)if(!s.extensions.find(s=>s.EXTENSION_NAME===t))throw new Error(`Missing required extension, "${t}".`);if(e.extensionsUsed)for(const t of e.extensionsUsed)s.extensions.find(s=>s.EXTENSION_NAME===t)||s.logger.warn(`Missing optional extension, "${t}".`)}}function tt(t,s){const e=s.json.bufferViews[t.bufferView],r=s.json.buffers[e.buffer],i=r.uri?s.resources[r.uri]:s.resources["yt"],n=X[t.componentType],h=M.getElementSize(t.type);if(void 0!==e.byteStride&&e.byteStride!==h*n.BYTES_PER_ELEMENT)return function(t,s){const e=s.json.bufferViews[t.bufferView],r=s.json.buffers[e.buffer],i=r.uri?s.resources[r.uri]:s.resources["yt"],n=X[t.componentType],h=M.getElementSize(t.type),o=n.BYTES_PER_ELEMENT,u=t.byteOffset||0,c=new n(t.count*h),a=new DataView(i,e.byteOffset,e.byteLength),l=e.byteStride;for(let s=0;s<t.count;s++)for(let e=0;e<h;e++){const r=u+s*l+e*o;let i;switch(t.componentType){case 5126:i=a.getFloat32(r,!0);break;case 5125:i=a.getUint32(r,!0);break;case 5123:i=a.getUint16(r,!0);break;case 5121:i=a.getUint8(r);break;case 5122:i=a.getInt16(r,!0);break;case 5120:i=a.getInt8(r);break;default:throw new Error(`Unexpected componentType "${t.componentType}".`)}c[s*h+e]=i}return c}(t,s);const o=(e.byteOffset||0)+(t.byteOffset||0);switch(t.componentType){case 5126:return new Float32Array(i,o,t.count*h);case 5125:return new Uint32Array(i,o,t.count*h);case 5123:return new Uint16Array(i,o,t.count*h);case 5121:return new Uint8Array(i,o,t.count*h);case 5122:return new Int16Array(i,o,t.count*h);case 5120:return new Int8Array(i,o,t.count*h);default:throw new Error(`Unexpected componentType "${t.componentType}".`)}}class st{constructor(t,s){this.jsonDoc=t,this.options=s,this.accessorIndexMap=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.samplerDefIndexMap=new Map,this.imageData=[]}createTextureInfoDef(t,s,e){const r={magFilter:e.getMagFilter()||void 0,minFilter:e.getMinFilter()||void 0,wrapS:e.getWrapS(),wrapT:e.getWrapT()},i=JSON.stringify(r);this.samplerDefIndexMap.has(i)||(this.samplerDefIndexMap.set(i,this.jsonDoc.json.samplers.length),this.jsonDoc.json.samplers.push(r));const n={source:this.imageIndexMap.get(t),sampler:this.samplerDefIndexMap.get(i)},h=JSON.stringify(n);return this.textureDefIndexMap.has(h)||(this.textureDefIndexMap.set(h,this.jsonDoc.json.textures.length),this.jsonDoc.json.textures.push(n)),{index:this.textureDefIndexMap.get(h),texCoord:s.getTexCoord()}}createPropertyDef(t){const s={};return t.getName()&&(s.name=t.getName()),Object.keys(t.getExtras()).length>0&&(s.extras=t.getExtras()),s}createAccessorDef(t){const s=this.createPropertyDef(t);return s.type=t.getType(),s.componentType=t.getComponentType(),s.count=t.getCount(),t.getMax(s.max=[]),t.getMin(s.min=[]),s.normalized=t.getNormalized(),s}createImageData(t,s,e){if(this.options.isGLB)this.imageData.push(s),t.bufferView=this.jsonDoc.json.bufferViews.length,this.jsonDoc.json.bufferViews.push({buffer:0,byteOffset:-1,byteLength:s.byteLength});else{const r=p.mimeTypeToExtension(e.getMimeType());t.uri=this.imageURIGenerator.createURI(e,r),this.jsonDoc.resources[t.uri]=s}}}class et{constructor(t,s){this.multiple=t,this.basename=s,this.counter=1}createURI(t,s){return t.getURI()?t.getURI():this.multiple?`${this.basename}_${this.counter++}.${s}`:`${this.basename}.${s}`}}const rt={logger:m.DEFAULT_INSTANCE,basename:"",isGLB:!0};class it{static write(t,s=rt){const e=t.getRoot(),r={json:{asset:e.getAsset()},resources:{}},i=s.logger||m.DEFAULT_INSTANCE,n=r.json;n.asset.generator="glTF-Transform v0.7.0-alpha.1";const h=new st(r,s),o=e.listBuffers().length,u=e.listTextures().length;function c(t,s,e,r){const i=[];let o=0;for(const s of t){const t=h.createAccessorDef(s);t.bufferView=n.bufferViews.length;const e=l.pad(s.getArray().buffer);t.byteOffset=o,o+=e.byteLength,i.push(e),h.accessorIndexMap.set(s,n.accessors.length),n.accessors.push(t)}const u={buffer:s,byteOffset:e,byteLength:l.concat(i).byteLength};return r&&(u.target=r),n.bufferViews.push(u),{buffers:i,byteLength:o}}function a(t,s,e){const r=t[0].getCount();let i=0;for(const s of t){const t=h.createAccessorDef(s);t.bufferView=n.bufferViews.length,t.byteOffset=i;const e=s.getElementSize(),r=s.getComponentSize();i+=l.padNumber(e*r),h.accessorIndexMap.set(s,n.accessors.length),n.accessors.push(t)}const o=r*i,u=new ArrayBuffer(o),c=new DataView(u);for(let s=0;s<r;s++){let e=0;for(const r of t){const t=r.getElementSize(),n=r.getComponentSize(),h=r.getComponentType(),o=r.getArray();for(let r=0;r<t;r++){const u=s*i+e+r*n,a=o[s*t+r];switch(h){case 5126:c.setFloat32(u,a,!0);break;case 5120:c.setInt8(u,a);break;case 5122:c.setInt16(u,a,!0);break;case 5121:c.setUint8(u,a);break;case 5123:c.setUint16(u,a,!0);break;case 5125:c.setUint32(u,a,!0);break;default:throw new Error("Unexpected component type: "+h)}}e+=l.padNumber(t*n)}}return n.bufferViews.push({buffer:s,byteOffset:e,byteLength:o,byteStride:i,target:34962}),{byteLength:o,buffers:[u]}}h.bufferURIGenerator=new et(o>1,s.basename),h.imageURIGenerator=new et(u>1,s.basename),h.logger=t.getLogger();const f=new Map;for(const s of t.getGraph().getLinks()){if(s.getParent()===e)continue;const t=s.getChild();if(t instanceof M){const e=f.get(t)||[];e.push(s),f.set(t,e)}}return n.accessors=[],n.bufferViews=[],n.samplers=[],n.textures=[],n.images=e.listTextures().map((t,s)=>{const e=h.createPropertyDef(t);return t.getMimeType()&&(e.mimeType=t.getMimeType()),t.getImage()&&h.createImageData(e,t.getImage(),t),h.imageIndexMap.set(t,s),e}),n.buffers=[],e.listBuffers().forEach(t=>{const e=h.createPropertyDef(t),i=new Map,o=new Set,u=new Set,d=t.listParents().filter(t=>!(t instanceof z));for(const t of d){if(!(t instanceof M))throw new Error("Unimplemented buffer reference: "+t);let s=!1,e=!1,r=!1;const n=f.get(t)||[];for(const t of n)t instanceof U?s=!0:t instanceof P?e=!0:r=!0;if(s||e||r||(r=!0),!s||e||r)if(!e||s||r){if(!r||s||e)throw new Error("Attribute or index accessors must be used only for that purpose.");u.add(t)}else o.add(t);else{const s=n[0].getParent(),e=i.get(s)||new Set;e.add(t),i.set(s,e)}}const p=[],g=n.buffers.length;let w,m=0;if(o.size){const t=c(Array.from(o),g,m,34963);m+=t.byteLength,p.push(...t.buffers)}for(const t of Array.from(i.values()))if(t.size){const s=a(Array.from(t),g,m);m+=s.byteLength,p.push(...s.buffers)}if(u.size){const t=c(Array.from(u),g,m);m+=t.byteLength,p.push(...t.buffers)}if(h.imageData.length)for(let t=0;t<h.imageData.length;t++)n.bufferViews[n.images[t].bufferView].byteOffset=m,m+=h.imageData[t].byteLength,p.push(h.imageData[t]);m?(s.isGLB?w="__glb.bin":(w=h.bufferURIGenerator.createURI(t,"bin"),e.uri=w),e.byteLength=m,r.resources[w]=l.concat(p),n.buffers.push(e)):h.logger.warn(`@gltf-transform/core: Skipping empty buffer, "${t.getName()}".`)}),e.listAccessors().find(t=>!t.getBuffer())&&i.warn("Skipped writing one or more Accessors: no Buffer assigned."),n.materials=e.listMaterials().map((t,s)=>{const e=h.createPropertyDef(t);if(e.alphaMode=t.getAlphaMode(),"MASK"===t.getAlphaMode()&&(e.alphaCutoff=t.getAlphaCutoff()),e.doubleSided=t.getDoubleSided(),e.pbrMetallicRoughness={},e.pbrMetallicRoughness.baseColorFactor=t.getBaseColorFactor(),e.emissiveFactor=t.getEmissiveFactor(),e.pbrMetallicRoughness.roughnessFactor=t.getRoughnessFactor(),e.pbrMetallicRoughness.metallicFactor=t.getMetallicFactor(),t.getBaseColorTexture()){const s=t.getBaseColorTexture(),r=t.getBaseColorTextureInfo(),i=t.getBaseColorTextureSampler();e.pbrMetallicRoughness.baseColorTexture=h.createTextureInfoDef(s,r,i)}if(t.getEmissiveTexture()){const s=t.getEmissiveTexture(),r=t.getEmissiveTextureInfo(),i=t.getEmissiveTextureSampler();e.emissiveTexture=h.createTextureInfoDef(s,r,i)}if(t.getNormalTexture()){const s=t.getNormalTexture(),r=t.getNormalTextureInfo(),i=t.getNormalTextureSampler(),n=h.createTextureInfoDef(s,r,i);1!==t.getNormalScale()&&(n.scale=t.getNormalScale()),e.normalTexture=n}if(t.getOcclusionTexture()){const s=t.getOcclusionTexture(),r=t.getOcclusionTextureInfo(),i=t.getOcclusionTextureSampler(),n=h.createTextureInfoDef(s,r,i);1!==t.getOcclusionStrength()&&(n.strength=t.getOcclusionStrength()),e.occlusionTexture=n}if(t.getMetallicRoughnessTexture()){const s=t.getMetallicRoughnessTexture(),r=t.getMetallicRoughnessTextureInfo(),i=t.getMetallicRoughnessTextureSampler();e.pbrMetallicRoughness.metallicRoughnessTexture=h.createTextureInfoDef(s,r,i)}return h.materialIndexMap.set(t,s),e}),n.meshes=e.listMeshes().map((t,s)=>{const e=h.createPropertyDef(t);let r;return e.primitives=t.listPrimitives().map(t=>{const s={attributes:{}};s.material=h.materialIndexMap.get(t.getMaterial()),s.mode=t.getMode(),Object.keys(t.getExtras()).length&&(s.extras=t.getExtras()),t.getIndices()&&(s.indices=h.accessorIndexMap.get(t.getIndices()));for(const e of t.listSemantics())s.attributes[e]=h.accessorIndexMap.get(t.getAttribute(e));for(const e of t.listTargets()){const t={};for(const s of e.listSemantics())t[s]=h.accessorIndexMap.get(e.getAttribute(s));s.targets=s.targets||[],s.targets.push(t)}return t.listTargets().length&&!r&&(r=t.listTargets().map(t=>t.getName())),s}),t.getWeights().length&&(e.weights=t.getWeights()),r&&(e.extras=e.extras||{},e.extras.targetNames=r),h.meshIndexMap.set(t,s),e}),n.cameras=e.listCameras().map((t,s)=>{const e=h.createPropertyDef(t);return e.type=t.getType(),"perspective"===e.type?e.perspective={znear:t.getZNear(),zfar:t.getZFar(),yfov:t.getYFov(),aspectRatio:t.getAspectRatio()}:e.orthographic={znear:t.getZNear(),zfar:t.getZFar(),xmag:t.getXMag(),ymag:t.getYMag()},h.cameraIndexMap.set(t,s),e}),n.nodes=e.listNodes().map((t,s)=>{const e=h.createPropertyDef(t);return e.translation=t.getTranslation(),e.rotation=t.getRotation(),e.scale=t.getScale(),t.getWeights().length&&(e.weights=t.getWeights()),h.nodeIndexMap.set(t,s),e}),n.skins=e.listSkins().map((t,s)=>{const e=h.createPropertyDef(t);return t.getInverseBindMatrices()&&(e.inverseBindMatrices=h.accessorIndexMap.get(t.getInverseBindMatrices())),t.getSkeleton()&&(e.skeleton=h.nodeIndexMap.get(t.getSkeleton())),e.joints=t.listJoints().map(t=>h.nodeIndexMap.get(t)),h.skinIndexMap.set(t,s),e}),e.listNodes().forEach((t,s)=>{const e=n.nodes[s];t.getMesh()&&(e.mesh=h.meshIndexMap.get(t.getMesh())),t.getCamera()&&(e.camera=h.cameraIndexMap.get(t.getCamera())),t.getSkin()&&(e.skin=h.skinIndexMap.get(t.getSkin())),t.listChildren().length>0&&(e.children=t.listChildren().map(t=>h.nodeIndexMap.get(t)))}),n.animations=e.listAnimations().map(t=>{const s=h.createPropertyDef(t),e=new Map;return s.samplers=t.listSamplers().map((t,s)=>{const r=h.createPropertyDef(t);return r.input=h.accessorIndexMap.get(t.getInput()),r.output=h.accessorIndexMap.get(t.getOutput()),r.interpolation=t.getInterpolation(),e.set(t,s),r}),s.channels=t.listChannels().map(t=>{const s=h.createPropertyDef(t);return s.sampler=e.get(t.getSampler()),s.target={node:h.nodeIndexMap.get(t.getTargetNode()),path:t.getTargetPath()},s}),s}),n.scenes=e.listScenes().map(t=>{const s=h.createPropertyDef(t);return s.nodes=t.listChildren().map(t=>h.nodeIndexMap.get(t)),s}),n.extensionsUsed=e.listExtensionsUsed().map(t=>t.extensionName),n.extensionsRequired=e.listExtensionsRequired().map(t=>t.extensionName),e.listExtensionsUsed().forEach(t=>t.write(h)),function(t){const s=[];for(const e in t){const r=t[e];Array.isArray(r)&&0===r.length?s.push(e):null!==r&&""!==r||s.push(r)}for(const e of s)delete t[e]}(n),r}}class nt{constructor(){this.xt=m.DEFAULT_INSTANCE,this.rt=[]}setLogger(t){return this.xt=t,this}registerExtensions(t){return this.rt.push(...t),this}readJSON(t){return Q.read(t,{extensions:this.rt,logger:this.xt})}writeJSON(t,s){if(s.isGLB&&1!==t.getRoot().listBuffers().length)throw new Error("GLB must have exactly 1 buffer.");return it.write(t,s)}binaryToJSON(t){const s=new Uint32Array(t,0,3);if(1179937895!==s[0])throw new Error("Invalid glTF asset.");if(2!==s[1])throw new Error(`Unsupported glTF binary version, "${s[1]}".`);const e=new Uint32Array(t,12,2),r=e[0],i=new Uint32Array(t,20+r,2);if(1313821514!==e[1]||5130562!==i[1])throw new Error("Unexpected GLB layout.");const n=l.decodeText(t.slice(20,20+r)),h=20+r+8;return{json:JSON.parse(n),resources:{yt:t.slice(h,h+i[0])}}}readBinary(t){return this.readJSON(this.binaryToJSON(t))}writeBinary(t){const{json:s,resources:e}=this.writeJSON(t,{basename:"",isGLB:!0,logger:this.xt}),r=JSON.stringify(s),i=l.pad(l.encodeText(r),32),n=new Uint32Array([i.byteLength,1313821514]).buffer,h=l.concat([n,i]),o=l.pad(Object.values(e)[0]||new ArrayBuffer(0),0),u=new Uint32Array([o.byteLength,5130562]).buffer,c=l.concat([u,o]),a=new Uint32Array([1179937895,2,12+h.byteLength+c.byteLength]).buffer;return l.concat([a,h,c])}}class ht extends nt{constructor(){super(),this.Tt=require("fs"),this.At=require("path")}read(t){const s=this.readAsJSON(t);return Q.read(s,{extensions:this.rt,logger:this.xt})}readAsJSON(t){return t.match(/\.glb$/)||t.match(/^data:application\/octet-stream;/)?this.Et(t):this.bt(t)}write(t,s){t.match(/\.glb$/)?this.St(t,s):this.Mt(t,s)}Et(t){const s=this.Tt.readFileSync(t),e=l.trim(s);return this.binaryToJSON(e)}bt(t){const s=this.At.dirname(t),e={json:JSON.parse(this.Tt.readFileSync(t,"utf8")),resources:{}};return[...e.json.images||[],...e.json.buffers||[]].forEach(t=>{if(t.uri)if(t.uri.match(/data:/)){const s=`__${T()}.${d.extension(t.uri)}`;e.resources[s]=l.createBufferFromDataURI(t.uri),t.uri=s}else{const r=this.At.resolve(s,t.uri);e.resources[t.uri]=l.trim(this.Tt.readFileSync(r))}}),e}Mt(t,s){const{json:e,resources:r}=it.write(s,{basename:d.basename(t),isGLB:!1,logger:this.xt}),{Tt:i,At:n}=this,h=n.dirname(t);i.writeFileSync(t,JSON.stringify(e,null,2)),Object.keys(r).forEach(t=>{const s=Buffer.from(r[t]);i.writeFileSync(n.join(h,t),s)})}St(t,s){const e=Buffer.from(this.writeBinary(s));this.Tt.writeFileSync(t,e)}}const ot={};class ut extends nt{constructor(t=ot){super(),this.Nt=t}read(t){return this.readAsJSON(t).then(t=>this.readJSON(t))}readAsJSON(t){return t.match(/\.glb$/)||t.match(/^data:application\/octet-stream;/)?this.Et(t):this.bt(t)}bt(t){const s={json:{},resources:{}};return fetch(t,this.Nt).then(t=>t.json()).then(t=>{s.json=t;const e=[...t.images,...t.buffers].map(t=>{if(t.uri)return fetch(t.uri,this.Nt).then(t=>t.arrayBuffer()).then(e=>{s.resources[t.uri]=e})});return Promise.all(e).then(()=>s)})}Et(t){return fetch(t,this.Nt).then(t=>t.arrayBuffer()).then(t=>this.binaryToJSON(t))}}export{M as Accessor,N as Animation,R as AnimationChannel,C as AnimationSampler,I as Buffer,l as BufferUtils,A as COPY_IDENTITY,_ as Camera,f as ColorUtils,H as Document,Y as Extension,B as ExtensionProperty,d as FileUtils,u as Graph,c as GraphChild,p as ImageUtils,m as Logger,G as Material,w as MathUtils,j as Mesh,D as Node,ht as NodeIO,J as Primitive,$ as PrimitiveTarget,E as Property,h as PropertyType,Z as ReaderContext,z as Root,V as Scene,W as Skin,q as Texture,L as TextureInfo,k as TextureLink,O as TextureSampler,ut as WebIO,st as WriterContext,T as uuid};
+import{fromRotationTranslationScale as t,getTranslation as s,getRotation as e,getScaling as r,multiply as i}from"gl-matrix/mat4";function n(t,s,e,r){var i,n=arguments.length,h=n<3?s:null===r?r=Object.getOwnPropertyDescriptor(s,e):r;if("object"==typeof Reflect&&"function"==typeof Reflect.decorate)h=Reflect.decorate(t,s,e,r);else for(var o=t.length-1;o>=0;o--)(i=t[o])&&(h=(n<3?i(h):n>3?i(s,e,h):i(s,e))||h);return n>3&&h&&Object.defineProperty(s,e,h),h}const h="__glb.bin";var o;!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",t.TEXTURE_SAMPLER="TextureSampler"}(o||(o={}));class u{constructor(t,s,e){if(this.t=t,this.s=s,this.i=e,this.h=!1,this.o=[],!s.canLink(e))throw new Error("Cannot link disconnected graphs/documents.")}getName(){return this.t}getParent(){return this.s}getChild(){return this.i}setChild(t){return this.i=t,this}dispose(){this.h||(this.h=!0,this.o.forEach(t=>t()),this.o.length=0)}onDispose(t){return this.o.push(t),this}isDisposed(){return this.h}}class c{constructor(){this.u=[]}getLinks(){return this.u}listParents(t){return this.u.filter(s=>s.getChild()===t).map(t=>t.getParent())}listChildren(t){return this.u.filter(s=>s.getParent()===t).map(t=>t.getChild())}disconnectChildren(t){return this.u.filter(s=>s.getParent()===t).forEach(t=>t.dispose()),this}disconnectParents(t,s){let e=this.u.filter(s=>s.getChild()===t);return s&&(e=e.filter(t=>s(t.getParent()))),e.forEach(t=>t.dispose()),this}link(t,s,e){if(!e)return null;const r=new u(t,s,e);return this.registerLink(r),r}registerLink(t){return 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w(t,s){if(s>t.byteLength)throw new TypeError("Corrupt JPG, exceeded buffer limits");if(255!==t.getUint8(s))throw new TypeError("Invalid JPG, marker table corrupted")}class m{static identity(t){return t}static denormalize(t,s){switch(s){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)}}static normalize(t,s){switch(s){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)}}}class v{constructor(t){this.verbosity=t}debug(t){this.verbosity<=v.Verbosity.DEBUG&&console.debug(t)}info(t){this.verbosity<=v.Verbosity.INFO&&console.info(t)}warn(t){this.verbosity<=v.Verbosity.WARN&&console.warn(t)}error(t){this.verbosity<=v.Verbosity.ERROR&&console.error(t)}}v.Verbosity={SILENT:4,ERROR:3,WARN:2,INFO:1,DEBUG:0},v.DEFAULT_INSTANCE=new v(v.Verbosity.INFO);const x="23456789abdegjkmnpqrvwxyzABDEGJKMNPQRVWXYZ",y=new Set,T=function(){let t="";for(let s=0;s<6;s++)t+=x.charAt(Math.floor(Math.random()*x.length));return t},A=function(){for(let t=0;t<999;t++){const t=T();if(!y.has(t))return y.add(t),t}},E=t=>t;class b extends class{constructor(t){this.h=!1,this.graph=t}canLink(t){return this.graph===t.graph}isDisposed(){return this.h}dispose(){this.graph.disconnectChildren(this),this.graph.disconnectParents(this),this.h=!0}detach(){return this.graph.disconnectParents(this),this}swap(t,s){return this.graph.getLinks().filter(s=>s.getParent()===this&&s.getChild()===t).forEach(t=>t.setChild(s)),this}addGraphChild(t,s){return t.push(s),s.onDispose(()=>{const e=t.filter(t=>t!==s);t.length=0,t.push(...e)}),this}removeGraphChild(t,s){return t.filter(t=>t.getChild()===s).forEach(t=>t.dispose()),this}clearGraphChildList(t){for(;t.length>0;)t[0].dispose();return this}listGraphParents(){return this.graph.listParents(this)}}{constructor(t,s=""){super(t),this.l={},this.t="",this.t=s}getName(){return this.t}setName(t){return this.t=t,this}getExtras(){return this.l}setExtras(t){return this.l=t,this}clone(){return new(0,this.constructor)(this.graph).copy(this,E)}copy(t,s){return this.t=t.t,this.l=JSON.parse(JSON.stringify(t.l)),this}detach(){return this.graph.disconnectParents(this,t=>"Root"!==t.propertyType),this}listParents(){return this.listGraphParents()}}const S="Pass extension name (string) as lookup token, not a constructor.";class M extends b{constructor(){super(...arguments),this.extensions=[]}copy(t,s=E){return super.copy(t,s),this.clearGraphChildList(this.extensions),t.extensions.forEach(t=>{const e=t.getChild();this.setExtension(e.extensionName,s(e))}),this}getExtension(t){if("string"!=typeof t)throw new Error(S);const s=this.extensions.find(s=>s.getChild().extensionName===t);return s?s.getChild():null}setExtension(t,s){if("string"!=typeof t)throw new Error(S);const e=this.getExtension(t);return e&&this.removeGraphChild(this.extensions,e),s?(s.p(this),this.addGraphChild(this.extensions,this.graph.link(t,this,s))):this}listExtensions(){return this.extensions.map(t=>t.getChild())}}n([l],M.prototype,"extensions",void 0);class N extends M{constructor(){super(...arguments),this.propertyType=o.ACCESSOR,this.g=null,this.m="SCALAR",this.v=null,this.T=!1,this.A=m.identity,this.S=m.identity,this.buffer=null}copy(t,s=E){return super.copy(t,s),this.g=t.g.slice(),this.m=t.m,this.v=t.v,this.T=t.T,this.A=t.A,this.S=t.S,t.buffer&&this.setBuffer(s(t.buffer.getChild())),this}static getElementSize(t){switch(t){case"SCALAR":return 1;case"VEC2":return 2;case"VEC3":return 3;case"VEC4":case"MAT2":return 4;case"MAT3":return 9;case"MAT4":return 16;default:throw new Error("Unexpected type: "+t)}}static getComponentSize(t){switch(t){case 5120:case 5121:return 1;case 5122:case 5123:return 2;case 5125:case 5126:return 4;default:throw new Error("Unexpected component type: 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this.g.byteLength}}N.Type={SCALAR:"SCALAR",VEC2:"VEC2",VEC3:"VEC3",VEC4:"VEC4",MAT3:"MAT3",MAT4:"MAT4"},N.ComponentType={BYTE:5120,UNSIGNED_BYTE:5121,SHORT:5122,UNSIGNED_SHORT:5123,UNSIGNED_INT:5125,FLOAT:5126},n([a],N.prototype,"buffer",void 0);class R extends M{constructor(){super(...arguments),this.propertyType=o.ANIMATION,this.channels=[],this.samplers=[]}copy(t,s=E){return super.copy(t,s),this.clearGraphChildList(this.channels),this.clearGraphChildList(this.samplers),t.channels.forEach(t=>this.addChannel(s(t.getChild()))),t.samplers.forEach(t=>this.addSampler(s(t.getChild()))),this}addChannel(t){const s=this.graph.link("channel",this,t);return this.addGraphChild(this.channels,s)}removeChannel(t){return this.removeGraphChild(this.channels,t)}listChannels(){return this.channels.map(t=>t.getChild())}addSampler(t){const s=this.graph.link("sampler",this,t);return this.addGraphChild(this.samplers,s)}removeSampler(t){return this.removeGraphChild(this.samplers,t)}listSamplers(){return this.samplers.map(t=>t.getChild())}}n([l],R.prototype,"channels",void 0),n([l],R.prototype,"samplers",void 0);class C extends b{constructor(){super(...arguments),this.propertyType=o.ANIMATION_CHANNEL,this.M=null,this.targetNode=null,this.sampler=null}copy(t,s=E){return super.copy(t,s),this.M=t.M,t.targetNode&&this.setTargetNode(s(t.targetNode.getChild())),t.sampler&&this.setSampler(s(t.sampler.getChild())),this}getTargetPath(){return this.M}setTargetPath(t){return this.M=t,this}getTargetNode(){return this.targetNode?this.targetNode.getChild():null}setTargetNode(t){return this.targetNode=this.graph.link("target.node",this,t),this}getSampler(){return this.sampler?this.sampler.getChild():null}setSampler(t){return this.sampler=this.graph.link("sampler",this,t),this}}n([a],C.prototype,"targetNode",void 0),n([a],C.prototype,"sampler",void 0);class I extends b{constructor(){super(...arguments),this.propertyType=o.ANIMATION_SAMPLER,this.N="LINEAR",this.input=null,this.output=null}copy(t,s=E){return super.copy(t,s),this.N=t.N,t.input&&this.setInput(s(t.input.getChild())),t.output&&this.setOutput(s(t.output.getChild())),this}getInterpolation(){return this.N}setInterpolation(t){return this.N=t,this}getInput(){return this.input?this.input.getChild():null}setInput(t){return this.input=this.graph.link("input",this,t),this}getOutput(){return this.output?this.output.getChild():null}setOutput(t){return this.output=this.graph.link("output",this,t),this}}n([a],I.prototype,"input",void 0),n([a],I.prototype,"output",void 0);class _ extends M{constructor(){super(...arguments),this.propertyType=o.BUFFER}copy(t,s=E){return super.copy(t,s),this.R=t.R,this}getURI(){return this.R}setURI(t){return this.R=t,this}}class B extends M{constructor(){super(...arguments),this.propertyType=o.CAMERA,this.m="perspective"}copy(t,s=E){return 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k{constructor(){this.propertyType=o.TEXTURE_SAMPLER,this.U=null,this.P=null,this.F=10497,this.G=10497}copy(t){return this.U=t.U,this.P=t.P,this.F=t.F,this.G=t.G,this}getMagFilter(){return this.U}setMagFilter(t){return this.U=t,this}getMinFilter(){return this.P}setMinFilter(t){return this.P=t,this}getWrapS(){return this.F}setWrapS(t){return this.F=t,this}getWrapT(){return this.G}setWrapT(t){return this.G=t,this}}k.TextureWrapMode={CLAMP_TO_EDGE:33071,MIRRORED_REPEAT:33648,REPEAT:10497},k.TextureMagFilter={NEAREST:9728,LINEAR:9729},k.TextureMinFilter={NEAREST:9728,LINEAR:9729,NEAREST_MIPMAP_NEAREST:9984,LINEAR_MIPMAP_NEAREST:9985,NEAREST_MIPMAP_LINEAR:9986,LINEAR_MIPMAP_LINEAR:9987};class U extends u{constructor(){super(...arguments),this.textureInfo=new L,this.sampler=new k}copy(t){return this.textureInfo.copy(t.textureInfo),this.sampler.copy(t.sampler),this}}class P extends u{constructor(){super(...arguments),this.semantic=""}copy(t){return this.semantic=t.semantic,this}}class F extends u{copy(t){return this}}class G extends c{linkTexture(t,s,e){if(!e)return null;const r=new U(t,s,e);return this.registerLink(r),r}linkAttribute(t,s,e){if(!e)return null;const r=new P(t,s,e);return this.registerLink(r),r}linkIndex(t,s,e){if(!e)return null;const r=new F(t,s,e);return this.registerLink(r),r}}class j extends M{constructor(){super(...arguments),this.propertyType=o.MATERIAL,this.j="OPAQUE",this.D=.5,this.J=!1,this.$=[1,1,1,1],this.V=[0,0,0],this.W=1,this.q=1,this.H=1,this.Y=1,this.baseColorTexture=null,this.emissiveTexture=null,this.normalTexture=null,this.occlusionTexture=null,this.metallicRoughnessTexture=null}copy(t,s=E){return super.copy(t,s),this.j=t.j,this.D=t.D,this.J=t.J,this.$=[...t.$],this.V=[...t.V],this.W=t.W,this.q=t.q,this.H=t.H,this.Y=t.Y,t.baseColorTexture&&(this.setBaseColorTexture(s(t.baseColorTexture.getChild())),this.baseColorTexture.copy(t.baseColorTexture)),t.emissiveTexture&&(this.setEmissiveTexture(s(t.emissiveTexture.getChild())),this.emissiveTexture.copy(t.emissiveTexture)),t.normalTexture&&(this.setNormalTexture(s(t.normalTexture.getChild())),this.normalTexture.copy(t.normalTexture)),t.occlusionTexture&&(this.setOcclusionTexture(s(t.occlusionTexture.getChild())),this.occlusionTexture.copy(t.occlusionTexture)),t.metallicRoughnessTexture&&(this.setMetallicRoughnessTexture(s(t.metallicRoughnessTexture.getChild())),this.metallicRoughnessTexture.copy(t.metallicRoughnessTexture)),this}getDoubleSided(){return this.J}setDoubleSided(t){return this.J=t,this}getAlpha(){return this.$[3]}setAlpha(t){return this.$[3]=t,this}getAlphaMode(){return this.j}setAlphaMode(t){return this.j=t,this}getAlphaCutoff(){return this.D}setAlphaCutoff(t){return this.D=t,this}getBaseColorFactor(){return this.$}setBaseColorFactor(t){return this.$=t,this}getBaseColorHex(){return d.factorToHex(this.$)}setBaseColorHex(t){return d.hexToFactor(t,this.$),this}getBaseColorTexture(){return this.baseColorTexture?this.baseColorTexture.getChild():null}getBaseColorTextureInfo(){return this.baseColorTexture?this.baseColorTexture.textureInfo:null}getBaseColorTextureSampler(){return this.baseColorTexture?this.baseColorTexture.sampler:null}setBaseColorTexture(t){return this.baseColorTexture=this.graph.linkTexture("baseColorTexture",this,t),this}getEmissiveFactor(){return this.V}setEmissiveFactor(t){return this.V=t,this}getEmissiveHex(){return d.factorToHex(this.V)}setEmissiveHex(t){return d.hexToFactor(t,this.V),this}getEmissiveTexture(){return this.emissiveTexture?this.emissiveTexture.getChild():null}getEmissiveTextureInfo(){return this.emissiveTexture?this.emissiveTexture.textureInfo:null}getEmissiveTextureSampler(){return this.emissiveTexture?this.emissiveTexture.sampler:null}setEmissiveTexture(t){return this.emissiveTexture=this.graph.linkTexture("emissiveTexture",this,t),this}getNormalScale(){return this.W}setNormalScale(t){return this.W=t,this}getNormalTexture(){return this.normalTexture?this.normalTexture.getChild():null}getNormalTextureInfo(){return this.normalTexture?this.normalTexture.textureInfo:null}getNormalTextureSampler(){return this.normalTexture?this.normalTexture.sampler:null}setNormalTexture(t){return this.normalTexture=this.graph.linkTexture("normalTexture",this,t),this}getOcclusionStrength(){return this.q}setOcclusionStrength(t){return this.q=t,this}getOcclusionTexture(){return this.occlusionTexture?this.occlusionTexture.getChild():null}getOcclusionTextureInfo(){return this.occlusionTexture?this.occlusionTexture.textureInfo:null}getOcclusionTextureSampler(){return this.occlusionTexture?this.occlusionTexture.sampler:null}setOcclusionTexture(t){return this.occlusionTexture=this.graph.linkTexture("occlusionTexture",this,t),this}getRoughnessFactor(){return this.H}setRoughnessFactor(t){return this.H=t,this}getMetallicFactor(){return this.Y}setMetallicFactor(t){return this.Y=t,this}getMetallicRoughnessTexture(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.getChild():null}getMetallicRoughnessTextureInfo(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.textureInfo:null}getMetallicRoughnessTextureSampler(){return this.metallicRoughnessTexture?this.metallicRoughnessTexture.sampler:null}setMetallicRoughnessTexture(t){return this.metallicRoughnessTexture=this.graph.linkTexture("metallicRoughnessTexture",this,t),this}}n([a],j.prototype,"baseColorTexture",void 0),n([a],j.prototype,"emissiveTexture",void 0),n([a],j.prototype,"normalTexture",void 0),n([a],j.prototype,"occlusionTexture",void 0),n([a],j.prototype,"metallicRoughnessTexture",void 0);class D extends M{constructor(){super(...arguments),this.propertyType=o.MESH,this.Z=[],this.primitives=[]}copy(t,s=E){return super.copy(t,s),this.Z=[...t.Z],this.clearGraphChildList(this.primitives),t.primitives.forEach(t=>this.addPrimitive(s(t.getChild()))),this}addPrimitive(t){return this.addGraphChild(this.primitives,this.graph.link("primitive",this,t))}removePrimitive(t){return this.removeGraphChild(this.primitives,t)}listPrimitives(){return this.primitives.map(t=>t.getChild())}getWeights(){return this.Z}setWeights(t){return this.Z=t,this}}n([l],D.prototype,"primitives",void 0);class J extends M{constructor(){super(...arguments),this.propertyType=o.NODE,this.X=[0,0,0],this.K=[0,0,0,1],this.tt=[1,1,1],this.Z=[],this.s=null,this.camera=null,this.mesh=null,this.skin=null,this.children=[]}copy(t,s=E){return super.copy(t,s),this.X=[...t.X],this.K=[...t.K],this.tt=[...t.tt],this.Z=[...t.Z],t.camera&&this.setCamera(s(t.camera.getChild())),t.mesh&&this.setMesh(s(t.mesh.getChild())),t.skin&&this.setSkin(s(t.skin.getChild())),s!==E&&(this.clearGraphChildList(this.children),t.children.forEach(t=>this.addChild(s(t.getChild())))),this}getTranslation(){return this.X}getRotation(){return this.K}getScale(){return this.tt}setTranslation(t){return this.X=t,this}setRotation(t){return this.K=t,this}setScale(t){return this.tt=t,this}getMatrix(){return t([],this.K,this.X,this.tt)}getWorldTranslation(){return s([],this.getWorldMatrix())}getWorldRotation(){return e([],this.getWorldMatrix())}getWorldScale(){return r([],this.getWorldMatrix())}getWorldMatrix(){const t=[];for(let s=this;s instanceof J;s=s.s)t.push(s);let s;const e=t.pop().getMatrix();for(;s=t.pop();)i(e,e,s.getMatrix());return e}addChild(t){t.s&&t.s.removeChild(t);const s=this.graph.link("child",this,t);return this.addGraphChild(this.children,s),t.s=this,s.onDispose(()=>t.s=null),this}removeChild(t){return this.removeGraphChild(this.children,t)}listChildren(){return this.children.map(t=>t.getChild())}getParent(){return this.s}getMesh(){return this.mesh?this.mesh.getChild():null}setMesh(t){return this.mesh=this.graph.link("mesh",this,t),this}getCamera(){return this.camera?this.camera.getChild():null}setCamera(t){return this.camera=this.graph.link("camera",this,t),this}getSkin(){return this.skin?this.skin.getChild():null}setSkin(t){return this.skin=this.graph.link("skin",this,t),this}getWeights(){return this.Z}setWeights(t){return this.Z=t,this}traverse(t){t(this);for(const s of this.listChildren())s.traverse(t);return this}}n([a],J.prototype,"camera",void 0),n([a],J.prototype,"mesh",void 0),n([a],J.prototype,"skin",void 0),n([l],J.prototype,"children",void 0);class $ extends b{constructor(){super(...arguments),this.propertyType=o.PRIMITIVE,this.st=4,this.material=null,this.indices=null,this.attributes=[],this.targets=[]}copy(t,s=E){return super.copy(t,s),this.st=t.st,t.indices&&this.setIndices(s(t.indices.getChild())),t.material&&this.setMaterial(s(t.material.getChild())),this.clearGraphChildList(this.attributes),t.listSemantics().forEach(e=>{this.setAttribute(e,s(t.getAttribute(e)))}),this.clearGraphChildList(this.targets),t.targets.forEach(t=>this.addTarget(s(t.getChild()))),this}getIndices(){return this.indices?this.indices.getChild():null}setIndices(t){return this.indices=this.graph.linkIndex("index",this,t),this}getAttribute(t){const s=this.attributes.find(s=>s.semantic===t);return s?s.getChild():null}setAttribute(t,s){const e=this.getAttribute(t);if(e&&this.removeGraphChild(this.attributes,e),!s)return this;const r=this.graph.linkAttribute(t.toLowerCase(),this,s);return r.semantic=t,this.addGraphChild(this.attributes,r)}listAttributes(){return this.attributes.map(t=>t.getChild())}listSemantics(){return this.attributes.map(t=>t.semantic)}getMaterial(){return this.material?this.material.getChild():null}setMaterial(t){return this.material=this.graph.link("material",this,t),this}getMode(){return this.st}setMode(t){return this.st=t,this}listTargets(){return this.targets.map(t=>t.getChild())}addTarget(t){return this.addGraphChild(this.targets,this.graph.link("target",this,t)),this}removeTarget(t){return this.removeGraphChild(this.targets,t)}}n([a],$.prototype,"material",void 0),n([a],$.prototype,"indices",void 0),n([l],$.prototype,"attributes",void 0),n([l],$.prototype,"targets",void 0);class z extends b{constructor(){super(...arguments),this.propertyType=o.PRIMITIVE_TARGET,this.attributes=[]}copy(t,s=E){return super.copy(t,s),this.clearGraphChildList(this.attributes),t.listSemantics().forEach(e=>{this.setAttribute(e,s(t.getAttribute(e)))}),this}getAttribute(t){const s=this.attributes.find(s=>s.semantic===t);return s?s.getChild():null}setAttribute(t,s){const e=this.getAttribute(t);if(e&&this.removeGraphChild(this.attributes,e),!s)return this;const r=this.graph.linkAttribute(t.toLowerCase(),this,s);return r.semantic=t,this.addGraphChild(this.attributes,r)}listAttributes(){return this.attributes.map(t=>t.getChild())}listSemantics(){return this.attributes.map(t=>t.semantic)}}n([l],z.prototype,"attributes",void 0);class V extends b{constructor(){super(...arguments),this.propertyType=o.ROOT,this.et={generator:"glTF-Transform v0.7.0-alpha.2",version:"2.0"},this.rt=new Set,this.accessors=[],this.animations=[],this.buffers=[],this.cameras=[],this.materials=[],this.meshes=[],this.nodes=[],this.scenes=[],this.skins=[],this.textures=[]}clone(){throw new Error("Root cannot be cloned.")}copy(t,s=E){if(super.copy(t,s),!s)throw new Error("Root cannot be copied.");return Object.assign(this.et,t.et),t.accessors.forEach(t=>this.it(s(t.getChild()))),t.animations.forEach(t=>this.nt(s(t.getChild()))),t.buffers.forEach(t=>this.ht(s(t.getChild()))),t.cameras.forEach(t=>this.ot(s(t.getChild()))),t.materials.forEach(t=>this.ut(s(t.getChild()))),t.meshes.forEach(t=>this.ct(s(t.getChild()))),t.nodes.forEach(t=>this.at(s(t.getChild()))),t.scenes.forEach(t=>this.lt(s(t.getChild()))),t.skins.forEach(t=>this.ft(s(t.getChild()))),t.textures.forEach(t=>this.dt(s(t.getChild()))),this}getAsset(){return this.et}listExtensionsUsed(){return Array.from(this.rt)}listExtensionsRequired(){return this.listExtensionsUsed().filter(t=>t.isRequired())}pt(t){if(this.rt.has(t))throw new Error(`Extension "${t.extensionName}" is already enabled.`);return this.rt.add(t),this}gt(t){return this.rt.delete(t),this}lt(t){return this.addGraphChild(this.scenes,this.graph.link("scene",this,t))}listScenes(){return this.scenes.map(t=>t.getChild())}at(t){return this.addGraphChild(this.nodes,this.graph.link("node",this,t))}listNodes(){return this.nodes.map(t=>t.getChild())}ot(t){return this.addGraphChild(this.cameras,this.graph.link("camera",this,t))}listCameras(){return this.cameras.map(t=>t.getChild())}ft(t){return this.addGraphChild(this.skins,this.graph.link("skin",this,t))}listSkins(){return this.skins.map(t=>t.getChild())}ct(t){return this.addGraphChild(this.meshes,this.graph.link("mesh",this,t))}listMeshes(){return this.meshes.map(t=>t.getChild())}ut(t){return this.addGraphChild(this.materials,this.graph.link("material",this,t))}listMaterials(){return this.materials.map(t=>t.getChild())}dt(t){return this.addGraphChild(this.textures,this.graph.link("texture",this,t))}listTextures(){return this.textures.map(t=>t.getChild())}nt(t){return this.addGraphChild(this.animations,this.graph.link("animation",this,t))}listAnimations(){return this.animations.map(t=>t.getChild())}it(t){return this.addGraphChild(this.accessors,this.graph.link("accessor",this,t))}listAccessors(){return this.accessors.map(t=>t.getChild())}ht(t){return this.addGraphChild(this.buffers,this.graph.link("buffer",this,t))}listBuffers(){return this.buffers.map(t=>t.getChild())}}n([l],V.prototype,"accessors",void 0),n([l],V.prototype,"animations",void 0),n([l],V.prototype,"buffers",void 0),n([l],V.prototype,"cameras",void 0),n([l],V.prototype,"materials",void 0),n([l],V.prototype,"meshes",void 0),n([l],V.prototype,"nodes",void 0),n([l],V.prototype,"scenes",void 0),n([l],V.prototype,"skins",void 0),n([l],V.prototype,"textures",void 0);class W extends M{constructor(){super(...arguments),this.propertyType=o.SCENE,this.children=[]}copy(t,s=E){return super.copy(t,s),s!==E&&(this.clearGraphChildList(this.children),t.children.forEach(t=>this.addChild(s(t.getChild())))),this}addChild(t){t.s&&t.s.removeChild(t);const s=this.graph.link("child",this,t);return this.addGraphChild(this.children,s),t.s=this,s.onDispose(()=>t.s=null),this}removeChild(t){return this.removeGraphChild(this.children,t)}listChildren(){return this.children.map(t=>t.getChild())}traverse(t){for(const s of this.listChildren())s.traverse(t);return this}}n([l],W.prototype,"children",void 0);class q extends M{constructor(){super(...arguments),this.propertyType=o.SKIN,this.skeleton=null,this.inverseBindMatrices=null,this.joints=[]}copy(t,s=E){return super.copy(t,s),t.skeleton&&this.setSkeleton(s(t.skeleton.getChild())),t.inverseBindMatrices&&this.setInverseBindMatrices(s(t.inverseBindMatrices.getChild())),this.clearGraphChildList(this.joints),t.joints.forEach(t=>this.addJoint(s(t.getChild()))),this}getSkeleton(){return this.skeleton?this.skeleton.getChild():null}setSkeleton(t){return this.skeleton=this.graph.link("skeleton",this,t),this}getInverseBindMatrices(){return this.inverseBindMatrices?this.inverseBindMatrices.getChild():null}setInverseBindMatrices(t){return this.inverseBindMatrices=this.graph.link("inverseBindMatrices",this,t),this}addJoint(t){const s=this.graph.link("joint",this,t);return this.addGraphChild(this.joints,s)}removeJoint(t){return this.removeGraphChild(this.joints,t)}listJoints(){return this.joints.map(t=>t.getChild())}}n([a],q.prototype,"skeleton",void 0),n([a],q.prototype,"inverseBindMatrices",void 0),n([l],q.prototype,"joints",void 0);class H extends M{constructor(){super(...arguments),this.propertyType=o.TEXTURE,this.image=null,this.mimeType="",this.uri=""}copy(t,s=E){return super.copy(t,s),this.mimeType=t.mimeType,this.uri=t.uri,t.image&&(this.image=t.image.slice(0)),this}getMimeType(){return this.mimeType}setMimeType(t){return this.mimeType=t,this}getURI(){return this.uri}setURI(t){return this.uri=t,this}getImage(){return this.image}setImage(t){return this.image=t,this}getSize(){let t;return t=this.mimeType?"image/png"===this.mimeType:this.uri.match(/\.png$/),t?g.getSizePNG(this.image):g.getSizeJPEG(this.image)}}class Y{constructor(){this.wt=new G,this.vt=new V(this.wt),this.xt=v.DEFAULT_INSTANCE}getRoot(){return this.vt}getGraph(){return this.wt}getLogger(){return this.xt}setLogger(t){return this.xt=t,this}clone(){return(new Y).merge(this)}merge(t){const s={};for(const e of t.getRoot().listExtensionsUsed()){const t=this.createExtension(e.constructor);e.isRequired()&&t.setRequired(!0),s[t.extensionName]=t}const e=new Set,r=new Map;e.add(t.vt),r.set(t.vt,this.vt);for(const i of t.wt.getLinks())for(const t of[i.getParent(),i.getChild()])if(!e.has(t)){const i=t.constructor,n=t instanceof O?new i(this.wt,s[t.extensionName]):new i(this.wt);r.set(t,n),e.add(t)}const i=t=>r.get(t);for(const t of e)r.get(t).copy(t,i);return this}async transform(...t){for(const s of t)await s(this);return this}createExtension(t){return this.getRoot().listExtensionsUsed().find(s=>s.extensionName===t.EXTENSION_NAME)||new t(this)}createScene(t=""){const s=new W(this.wt,t);return this.vt.lt(s),s}createNode(t=""){const s=new J(this.wt,t);return this.vt.at(s),s}createCamera(t=""){const s=new B(this.wt,t);return this.vt.ot(s),s}createSkin(t=""){const s=new q(this.wt,t);return this.vt.ft(s),s}createMesh(t=""){const s=new D(this.wt,t);return this.vt.ct(s),s}createPrimitive(){return new $(this.wt)}createPrimitiveTarget(t=""){return new z(this.wt,t)}createMaterial(t=""){const s=new j(this.wt,t);return this.vt.ut(s),s}createTexture(t=""){const s=new H(this.wt,t);return this.vt.dt(s),s}createAnimation(t=""){const s=new R(this.wt,t);return this.vt.nt(s),s}createAnimationChannel(){return new C(this.wt)}createAnimationSampler(){return new I(this.wt)}createAccessor(t="",s=null){s||(s=this.getRoot().listBuffers()[0]);const e=new N(this.wt,t).setBuffer(s);return this.vt.it(e),e}createBuffer(t=""){const s=new _(this.wt,t);return this.vt.ht(s),s}}class Z{constructor(t){this.doc=t,this.provideTypes=[],this.dependencies=[],this.required=!1,this.properties=new Set,t.getRoot().pt(this)}dispose(){this.doc.getRoot().gt(this);for(const t of this.properties)t.dispose()}isRequired(){return this.required}setRequired(t){return this.required=t,this}addExtensionProperty(t){return this.properties.add(t),this}removeExtensionProperty(t){return this.properties.delete(t),this}install(t,s){return this}provide(t,s){return this}}class X{constructor(t){this.jsonDoc=t,this.buffers=[],this.bufferViewBuffers=[],this.accessors=[],this.textures=[],this.materials=[],this.meshes=[],this.cameras=[],this.nodes=[],this.skins=[],this.animations=[],this.scenes=[]}setTextureInfo(t,s){void 0!==s.texCoord&&t.setTexCoord(s.texCoord)}setTextureSampler(t,s){const e=this.jsonDoc.json.textures[s.index];if(void 0===e.sampler)return;const r=this.jsonDoc.json.samplers[e.sampler];void 0!==r.magFilter&&t.setMagFilter(r.magFilter),void 0!==r.minFilter&&t.setMinFilter(r.minFilter),void 0!==r.wrapS&&t.setWrapS(r.wrapS),void 0!==r.wrapT&&t.setWrapT(r.wrapT)}}const K={5120:Int8Array,5121:Uint8Array,5122:Int16Array,5123:Uint16Array,5125:Uint32Array,5126:Float32Array},Q={logger:v.DEFAULT_INSTANCE,extensions:[],dependencies:{}};class tt{static read(t,i=Q){const{json:n}=t,h=new Y;this.validate(t,i);const u=new X(t),c=t.json.asset,a=h.getRoot().getAsset();c.copyright&&(a.copyright=c.copyright),c.extras&&(a.extras=c.extras),c.generator&&(a.generator=c.generator),c.minVersion&&(a.minVersion=c.minVersion);const l=n.extensionsUsed||[],f=n.extensionsRequired||[];for(const t of i.extensions)if(l.includes(t.EXTENSION_NAME)){const s=h.createExtension(t).setRequired(f.includes(t.EXTENSION_NAME));for(const t of s.dependencies)s.install(t,i.dependencies[t])}u.buffers=(n.buffers||[]).map(t=>{const s=h.createBuffer(t.name);return t.extras&&s.setExtras(t.extras),t.uri&&0!==t.uri.indexOf("__")&&s.setURI(t.uri),s}),u.bufferViewBuffers=(n.bufferViews||[]).map(t=>u.buffers[t.buffer]),u.accessors=(n.accessors||[]).map(s=>{const e=h.createAccessor(s.name,u.bufferViewBuffers[s.bufferView]).setType(s.type);if(s.extras&&e.setExtras(s.extras),void 0!==s.normalized&&e.setNormalized(s.normalized),void 0===s.bufferView&&!s.sparse)return e;let r;return r=void 0!==s.sparse?function(t,s){const e=K[t.componentType],r=N.getElementSize(t.type);let i;i=void 0!==t.bufferView?st(t,s).slice():new e(t.count*r);const n=t.sparse.count,h={...t,...t.sparse.indices,count:n,type:"SCALAR"},o={...t,...t.sparse.values,count:n},u=st(h,s),c=st(o,s);for(let t=0;t<h.count;t++)for(let s=0;s<r;s++)i[u[t]*r+s]=c[t*r+s];return i}(s,t):st(s,t).slice(),e.setArray(r),e});const d=n.images||[],w=n.textures||[];h.getRoot().listExtensionsUsed().filter(t=>t.provideTypes.includes(o.TEXTURE)).forEach(t=>t.provide(u,o.TEXTURE)),u.textures=d.map(s=>{const e=h.createTexture(s.name);if(s.extras&&e.setExtras(s.extras),void 0!==s.bufferView){const r=n.bufferViews[s.bufferView],i=t.json.buffers[r.buffer],h=r.byteOffset||0,o=(i.uri?t.resources[i.uri]:t.resources["yt"]).slice(h,h+r.byteLength);e.setImage(o)}else void 0!==s.uri&&(e.setImage(t.resources[s.uri]),0!==s.uri.indexOf("__")&&e.setURI(s.uri));if(void 0!==s.mimeType)e.setMimeType(s.mimeType);else if(s.uri){const t=p.extension(s.uri);e.setMimeType(g.extensionToMimeType(t))}return e}),u.materials=(n.materials||[]).map(t=>{const s=h.createMaterial(t.name);t.extras&&s.setExtras(t.extras),void 0!==t.alphaMode&&s.setAlphaMode(t.alphaMode),void 0!==t.alphaCutoff&&s.setAlphaCutoff(t.alphaCutoff),void 0!==t.doubleSided&&s.setDoubleSided(t.doubleSided);const e=t.pbrMetallicRoughness||{};if(void 0!==e.baseColorFactor&&s.setBaseColorFactor(e.baseColorFactor),void 0!==t.emissiveFactor&&s.setEmissiveFactor(t.emissiveFactor),void 0!==e.metallicFactor&&s.setMetallicFactor(e.metallicFactor),void 0!==e.roughnessFactor&&s.setRoughnessFactor(e.roughnessFactor),void 0!==e.baseColorTexture){const t=e.baseColorTexture;s.setBaseColorTexture(u.textures[w[t.index].source]),u.setTextureInfo(s.getBaseColorTextureInfo(),t),u.setTextureSampler(s.getBaseColorTextureSampler(),t)}if(void 0!==t.emissiveTexture){const e=t.emissiveTexture;s.setEmissiveTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getEmissiveTextureInfo(),e),u.setTextureSampler(s.getEmissiveTextureSampler(),e)}if(void 0!==t.normalTexture){const e=t.normalTexture;s.setNormalTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getNormalTextureInfo(),e),u.setTextureSampler(s.getNormalTextureSampler(),e),void 0!==t.normalTexture.scale&&s.setNormalScale(t.normalTexture.scale)}if(void 0!==t.occlusionTexture){const e=t.occlusionTexture;s.setOcclusionTexture(u.textures[w[e.index].source]),u.setTextureInfo(s.getOcclusionTextureInfo(),e),u.setTextureSampler(s.getOcclusionTextureSampler(),e),void 0!==t.occlusionTexture.strength&&s.setOcclusionStrength(t.occlusionTexture.strength)}if(void 0!==e.metallicRoughnessTexture){const t=e.metallicRoughnessTexture;s.setMetallicRoughnessTexture(u.textures[w[t.index].source]),u.setTextureInfo(s.getMetallicRoughnessTextureInfo(),t),u.setTextureSampler(s.getMetallicRoughnessTextureSampler(),t)}return s});const m=n.meshes||[];h.getRoot().listExtensionsUsed().filter(t=>t.provideTypes.includes(o.PRIMITIVE)).forEach(t=>t.provide(u,o.PRIMITIVE)),u.meshes=m.map(t=>{const s=h.createMesh(t.name);return t.extras&&s.setExtras(t.extras),void 0!==t.weights&&s.setWeights(t.weights),t.primitives.forEach(e=>{const r=h.createPrimitive();e.extras&&r.setExtras(e.extras),void 0!==e.material&&r.setMaterial(u.materials[e.material]),void 0!==e.mode&&r.setMode(e.mode);for(const[t,s]of Object.entries(e.attributes||{}))r.setAttribute(t,u.accessors[s]);void 0!==e.indices&&r.setIndices(u.accessors[e.indices]);const i=t.extras&&t.extras.targetNames||[];(e.targets||[]).forEach((t,s)=>{const e=i[s]||s.toString(),n=h.createPrimitiveTarget(e);for(const[s,e]of Object.entries(t))n.setAttribute(s,u.accessors[e]);r.addTarget(n)}),s.addPrimitive(r)}),s}),u.cameras=(n.cameras||[]).map(t=>{const s=h.createCamera(t.name).setType(t.type);return t.extras&&s.setExtras(t.extras),"perspective"===t.type?s.setZNear(t.perspective.znear).setZFar(t.perspective.zfar).setYFov(t.perspective.yfov).setAspectRatio(t.perspective.aspectRatio):s.setZNear(t.orthographic.znear).setZFar(t.orthographic.zfar).setXMag(t.orthographic.xmag).setYMag(t.orthographic.ymag),s});const v=n.nodes||[];return u.nodes=v.map(t=>{const i=h.createNode(t.name);return t.extras&&i.setExtras(t.extras),void 0!==t.translation&&i.setTranslation(t.translation),void 0!==t.rotation&&i.setRotation(t.rotation),void 0!==t.scale&&i.setScale(t.scale),void 0!==t.matrix&&(i.setTranslation(s([],t.matrix)),i.setRotation(e([],t.matrix)),i.setScale(r([],t.matrix))),void 0!==t.weights&&i.setWeights(t.weights),i}),u.skins=(n.skins||[]).map(t=>{const s=h.createSkin(t.name);t.extras&&s.setExtras(t.extras),void 0!==t.inverseBindMatrices&&s.setInverseBindMatrices(u.accessors[t.inverseBindMatrices]),void 0!==t.skeleton&&s.setSkeleton(u.nodes[t.skeleton]);for(const e of t.joints)s.addJoint(u.nodes[e]);return s}),v.map((t,s)=>{const e=u.nodes[s];(t.children||[]).forEach(t=>e.addChild(u.nodes[t])),void 0!==t.mesh&&e.setMesh(u.meshes[t.mesh]),void 0!==t.camera&&e.setCamera(u.cameras[t.camera]),void 0!==t.skin&&e.setSkin(u.skins[t.skin])}),u.animations=(n.animations||[]).map(t=>{const s=h.createAnimation(t.name);t.extras&&s.setExtras(t.extras);const e=(t.samplers||[]).map(t=>{const e=h.createAnimationSampler().setInput(u.accessors[t.input]).setOutput(u.accessors[t.output]).setInterpolation(t.interpolation||"LINEAR");return t.extras&&e.setExtras(t.extras),s.addSampler(e),e});return(t.channels||[]).forEach(t=>{const r=h.createAnimationChannel().setSampler(e[t.sampler]).setTargetNode(u.nodes[t.target.node]).setTargetPath(t.target.path);t.extras&&r.setExtras(t.extras),s.addChannel(r)}),s}),u.scenes=(n.scenes||[]).map(t=>{const s=h.createScene(t.name);return t.extras&&s.setExtras(t.extras),(t.nodes||[]).map(t=>u.nodes[t]).forEach(t=>s.addChild(t)),s}),h.getRoot().listExtensionsUsed().forEach(t=>t.read(u)),h}static validate(t,s){const e=t.json;if("2.0"!==e.asset.version)throw new Error(`Unsupported glTF version, "${e.asset.version}".`);if(e.extensionsRequired)for(const t of e.extensionsRequired)if(!s.extensions.find(s=>s.EXTENSION_NAME===t))throw new Error(`Missing required extension, "${t}".`);if(e.extensionsUsed)for(const t of e.extensionsUsed)s.extensions.find(s=>s.EXTENSION_NAME===t)||s.logger.warn(`Missing optional extension, "${t}".`)}}function st(t,s){const e=s.json.bufferViews[t.bufferView],r=s.json.buffers[e.buffer],i=r.uri?s.resources[r.uri]:s.resources["yt"],n=K[t.componentType],h=N.getElementSize(t.type);if(void 0!==e.byteStride&&e.byteStride!==h*n.BYTES_PER_ELEMENT)return function(t,s){const e=s.json.bufferViews[t.bufferView],r=s.json.buffers[e.buffer],i=r.uri?s.resources[r.uri]:s.resources["yt"],n=K[t.componentType],h=N.getElementSize(t.type),o=n.BYTES_PER_ELEMENT,u=t.byteOffset||0,c=new n(t.count*h),a=new DataView(i,e.byteOffset,e.byteLength),l=e.byteStride;for(let s=0;s<t.count;s++)for(let e=0;e<h;e++){const r=u+s*l+e*o;let i;switch(t.componentType){case 5126:i=a.getFloat32(r,!0);break;case 5125:i=a.getUint32(r,!0);break;case 5123:i=a.getUint16(r,!0);break;case 5121:i=a.getUint8(r);break;case 5122:i=a.getInt16(r,!0);break;case 5120:i=a.getInt8(r);break;default:throw new Error(`Unexpected componentType "${t.componentType}".`)}c[s*h+e]=i}return c}(t,s);const o=(e.byteOffset||0)+(t.byteOffset||0);switch(t.componentType){case 5126:return new Float32Array(i,o,t.count*h);case 5125:return new Uint32Array(i,o,t.count*h);case 5123:return new Uint16Array(i,o,t.count*h);case 5121:return new Uint8Array(i,o,t.count*h);case 5122:return new Int16Array(i,o,t.count*h);case 5120:return new Int8Array(i,o,t.count*h);default:throw new Error(`Unexpected componentType "${t.componentType}".`)}}class et{constructor(t,s){this.jsonDoc=t,this.options=s,this.accessorIndexMap=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.samplerDefIndexMap=new Map,this.imageData=[]}createTextureInfoDef(t,s,e){const r={magFilter:e.getMagFilter()||void 0,minFilter:e.getMinFilter()||void 0,wrapS:e.getWrapS(),wrapT:e.getWrapT()},i=JSON.stringify(r);this.samplerDefIndexMap.has(i)||(this.samplerDefIndexMap.set(i,this.jsonDoc.json.samplers.length),this.jsonDoc.json.samplers.push(r));const n={source:this.imageIndexMap.get(t),sampler:this.samplerDefIndexMap.get(i)},h=JSON.stringify(n);return this.textureDefIndexMap.has(h)||(this.textureDefIndexMap.set(h,this.jsonDoc.json.textures.length),this.jsonDoc.json.textures.push(n)),{index:this.textureDefIndexMap.get(h),texCoord:s.getTexCoord()}}createPropertyDef(t){const s={};return t.getName()&&(s.name=t.getName()),Object.keys(t.getExtras()).length>0&&(s.extras=t.getExtras()),s}createAccessorDef(t){const s=this.createPropertyDef(t);return s.type=t.getType(),s.componentType=t.getComponentType(),s.count=t.getCount(),t.getMax(s.max=[]),t.getMin(s.min=[]),s.normalized=t.getNormalized(),s}createImageData(t,s,e){if(this.options.isGLB)this.imageData.push(s),t.bufferView=this.jsonDoc.json.bufferViews.length,this.jsonDoc.json.bufferViews.push({buffer:0,byteOffset:-1,byteLength:s.byteLength});else{const r=g.mimeTypeToExtension(e.getMimeType());t.uri=this.imageURIGenerator.createURI(e,r),this.jsonDoc.resources[t.uri]=s}}}class rt{constructor(t,s){this.multiple=t,this.basename=s,this.counter=1}createURI(t,s){return t.getURI()?t.getURI():this.multiple?`${this.basename}_${this.counter++}.${s}`:`${this.basename}.${s}`}}const it={logger:v.DEFAULT_INSTANCE,basename:"",isGLB:!0};class nt{static write(t,s=it){const e=t.getRoot(),r={json:{asset:e.getAsset()},resources:{}},i=s.logger||v.DEFAULT_INSTANCE,n=r.json;n.asset.generator="glTF-Transform v0.7.0-alpha.2";const h=new et(r,s),o=e.listBuffers().length,u=e.listTextures().length;function c(t,s,e,r){const i=[];let o=0;for(const s of t){const t=h.createAccessorDef(s);t.bufferView=n.bufferViews.length;const e=f.pad(s.getArray().buffer);t.byteOffset=o,o+=e.byteLength,i.push(e),h.accessorIndexMap.set(s,n.accessors.length),n.accessors.push(t)}const u={buffer:s,byteOffset:e,byteLength:f.concat(i).byteLength};return r&&(u.target=r),n.bufferViews.push(u),{buffers:i,byteLength:o}}function a(t,s,e){const r=t[0].getCount();let i=0;for(const s of t){const t=h.createAccessorDef(s);t.bufferView=n.bufferViews.length,t.byteOffset=i;const e=s.getElementSize(),r=s.getComponentSize();i+=f.padNumber(e*r),h.accessorIndexMap.set(s,n.accessors.length),n.accessors.push(t)}const o=r*i,u=new ArrayBuffer(o),c=new DataView(u);for(let s=0;s<r;s++){let e=0;for(const r of t){const t=r.getElementSize(),n=r.getComponentSize(),h=r.getComponentType(),o=r.getArray();for(let r=0;r<t;r++){const u=s*i+e+r*n,a=o[s*t+r];switch(h){case 5126:c.setFloat32(u,a,!0);break;case 5120:c.setInt8(u,a);break;case 5122:c.setInt16(u,a,!0);break;case 5121:c.setUint8(u,a);break;case 5123:c.setUint16(u,a,!0);break;case 5125:c.setUint32(u,a,!0);break;default:throw new Error("Unexpected component type: "+h)}}e+=f.padNumber(t*n)}}return n.bufferViews.push({buffer:s,byteOffset:e,byteLength:o,byteStride:i,target:34962}),{byteLength:o,buffers:[u]}}h.bufferURIGenerator=new rt(o>1,s.basename),h.imageURIGenerator=new rt(u>1,s.basename),h.logger=t.getLogger();const l=new Map;for(const s of t.getGraph().getLinks()){if(s.getParent()===e)continue;const t=s.getChild();if(t instanceof N){const e=l.get(t)||[];e.push(s),l.set(t,e)}}return n.accessors=[],n.bufferViews=[],n.samplers=[],n.textures=[],n.images=e.listTextures().map((t,s)=>{const e=h.createPropertyDef(t);return t.getMimeType()&&(e.mimeType=t.getMimeType()),t.getImage()&&h.createImageData(e,t.getImage(),t),h.imageIndexMap.set(t,s),e}),n.buffers=[],e.listBuffers().forEach(t=>{const e=h.createPropertyDef(t),i=new Map,o=new Set,u=new Set,d=t.listParents().filter(t=>!(t instanceof V));for(const t of d){if(!(t instanceof N))throw new Error("Unimplemented buffer reference: "+t);let s=!1,e=!1,r=!1;const n=l.get(t)||[];for(const t of n)t instanceof P?s=!0:t instanceof F?e=!0:r=!0;if(s||e||r||(r=!0),!s||e||r)if(!e||s||r){if(!r||s||e)throw new Error("Attribute or index accessors must be used only for that purpose.");u.add(t)}else o.add(t);else{const s=n[0].getParent(),e=i.get(s)||new Set;e.add(t),i.set(s,e)}}const p=[],g=n.buffers.length;let w,m=0;if(o.size){const t=c(Array.from(o),g,m,34963);m+=t.byteLength,p.push(...t.buffers)}for(const t of Array.from(i.values()))if(t.size){const s=a(Array.from(t),g,m);m+=s.byteLength,p.push(...s.buffers)}if(u.size){const t=c(Array.from(u),g,m);m+=t.byteLength,p.push(...t.buffers)}if(h.imageData.length)for(let t=0;t<h.imageData.length;t++)n.bufferViews[n.images[t].bufferView].byteOffset=m,m+=h.imageData[t].byteLength,p.push(h.imageData[t]);m?(s.isGLB?w="__glb.bin":(w=h.bufferURIGenerator.createURI(t,"bin"),e.uri=w),e.byteLength=m,r.resources[w]=f.concat(p),n.buffers.push(e)):h.logger.warn(`@gltf-transform/core: Skipping empty buffer, "${t.getName()}".`)}),e.listAccessors().find(t=>!t.getBuffer())&&i.warn("Skipped writing one or more Accessors: no Buffer assigned."),n.materials=e.listMaterials().map((t,s)=>{const e=h.createPropertyDef(t);if(e.alphaMode=t.getAlphaMode(),"MASK"===t.getAlphaMode()&&(e.alphaCutoff=t.getAlphaCutoff()),e.doubleSided=t.getDoubleSided(),e.pbrMetallicRoughness={},e.pbrMetallicRoughness.baseColorFactor=t.getBaseColorFactor(),e.emissiveFactor=t.getEmissiveFactor(),e.pbrMetallicRoughness.roughnessFactor=t.getRoughnessFactor(),e.pbrMetallicRoughness.metallicFactor=t.getMetallicFactor(),t.getBaseColorTexture()){const s=t.getBaseColorTexture(),r=t.getBaseColorTextureInfo(),i=t.getBaseColorTextureSampler();e.pbrMetallicRoughness.baseColorTexture=h.createTextureInfoDef(s,r,i)}if(t.getEmissiveTexture()){const s=t.getEmissiveTexture(),r=t.getEmissiveTextureInfo(),i=t.getEmissiveTextureSampler();e.emissiveTexture=h.createTextureInfoDef(s,r,i)}if(t.getNormalTexture()){const s=t.getNormalTexture(),r=t.getNormalTextureInfo(),i=t.getNormalTextureSampler(),n=h.createTextureInfoDef(s,r,i);1!==t.getNormalScale()&&(n.scale=t.getNormalScale()),e.normalTexture=n}if(t.getOcclusionTexture()){const s=t.getOcclusionTexture(),r=t.getOcclusionTextureInfo(),i=t.getOcclusionTextureSampler(),n=h.createTextureInfoDef(s,r,i);1!==t.getOcclusionStrength()&&(n.strength=t.getOcclusionStrength()),e.occlusionTexture=n}if(t.getMetallicRoughnessTexture()){const s=t.getMetallicRoughnessTexture(),r=t.getMetallicRoughnessTextureInfo(),i=t.getMetallicRoughnessTextureSampler();e.pbrMetallicRoughness.metallicRoughnessTexture=h.createTextureInfoDef(s,r,i)}return h.materialIndexMap.set(t,s),e}),n.meshes=e.listMeshes().map((t,s)=>{const e=h.createPropertyDef(t);let r;return e.primitives=t.listPrimitives().map(t=>{const s={attributes:{}};s.material=h.materialIndexMap.get(t.getMaterial()),s.mode=t.getMode(),Object.keys(t.getExtras()).length&&(s.extras=t.getExtras()),t.getIndices()&&(s.indices=h.accessorIndexMap.get(t.getIndices()));for(const e of t.listSemantics())s.attributes[e]=h.accessorIndexMap.get(t.getAttribute(e));for(const e of t.listTargets()){const t={};for(const s of e.listSemantics())t[s]=h.accessorIndexMap.get(e.getAttribute(s));s.targets=s.targets||[],s.targets.push(t)}return t.listTargets().length&&!r&&(r=t.listTargets().map(t=>t.getName())),s}),t.getWeights().length&&(e.weights=t.getWeights()),r&&(e.extras=e.extras||{},e.extras.targetNames=r),h.meshIndexMap.set(t,s),e}),n.cameras=e.listCameras().map((t,s)=>{const e=h.createPropertyDef(t);return e.type=t.getType(),"perspective"===e.type?e.perspective={znear:t.getZNear(),zfar:t.getZFar(),yfov:t.getYFov(),aspectRatio:t.getAspectRatio()}:e.orthographic={znear:t.getZNear(),zfar:t.getZFar(),xmag:t.getXMag(),ymag:t.getYMag()},h.cameraIndexMap.set(t,s),e}),n.nodes=e.listNodes().map((t,s)=>{const e=h.createPropertyDef(t);return e.translation=t.getTranslation(),e.rotation=t.getRotation(),e.scale=t.getScale(),t.getWeights().length&&(e.weights=t.getWeights()),h.nodeIndexMap.set(t,s),e}),n.skins=e.listSkins().map((t,s)=>{const e=h.createPropertyDef(t);return t.getInverseBindMatrices()&&(e.inverseBindMatrices=h.accessorIndexMap.get(t.getInverseBindMatrices())),t.getSkeleton()&&(e.skeleton=h.nodeIndexMap.get(t.getSkeleton())),e.joints=t.listJoints().map(t=>h.nodeIndexMap.get(t)),h.skinIndexMap.set(t,s),e}),e.listNodes().forEach((t,s)=>{const e=n.nodes[s];t.getMesh()&&(e.mesh=h.meshIndexMap.get(t.getMesh())),t.getCamera()&&(e.camera=h.cameraIndexMap.get(t.getCamera())),t.getSkin()&&(e.skin=h.skinIndexMap.get(t.getSkin())),t.listChildren().length>0&&(e.children=t.listChildren().map(t=>h.nodeIndexMap.get(t)))}),n.animations=e.listAnimations().map(t=>{const s=h.createPropertyDef(t),e=new Map;return s.samplers=t.listSamplers().map((t,s)=>{const r=h.createPropertyDef(t);return r.input=h.accessorIndexMap.get(t.getInput()),r.output=h.accessorIndexMap.get(t.getOutput()),r.interpolation=t.getInterpolation(),e.set(t,s),r}),s.channels=t.listChannels().map(t=>{const s=h.createPropertyDef(t);return s.sampler=e.get(t.getSampler()),s.target={node:h.nodeIndexMap.get(t.getTargetNode()),path:t.getTargetPath()},s}),s}),n.scenes=e.listScenes().map(t=>{const s=h.createPropertyDef(t);return s.nodes=t.listChildren().map(t=>h.nodeIndexMap.get(t)),s}),n.extensionsUsed=e.listExtensionsUsed().map(t=>t.extensionName),n.extensionsRequired=e.listExtensionsRequired().map(t=>t.extensionName),e.listExtensionsUsed().forEach(t=>t.write(h)),function(t){const s=[];for(const e in t){const r=t[e];Array.isArray(r)&&0===r.length?s.push(e):null!==r&&""!==r||s.push(r)}for(const e of s)delete t[e]}(n),r}}class ht{constructor(){this.xt=v.DEFAULT_INSTANCE,this.rt=[],this.Tt={}}setLogger(t){return this.xt=t,this}registerExtensions(t){return this.rt.push(...t),this}registerDependencies(t){return Object.assign(this.Tt,t),this}readJSON(t){return tt.read(t,{extensions:this.rt,dependencies:this.Tt,logger:this.xt})}writeJSON(t,s){if(s.isGLB&&1!==t.getRoot().listBuffers().length)throw new Error("GLB must have exactly 1 buffer.");return nt.write(t,s)}binaryToJSON(t){const s=new Uint32Array(t,0,3);if(1179937895!==s[0])throw new Error("Invalid glTF asset.");if(2!==s[1])throw new Error(`Unsupported glTF binary version, "${s[1]}".`);const e=new Uint32Array(t,12,2),r=e[0],i=new Uint32Array(t,20+r,2);if(1313821514!==e[1]||5130562!==i[1])throw new Error("Unexpected GLB layout.");const n=f.decodeText(t.slice(20,20+r)),h=20+r+8;return{json:JSON.parse(n),resources:{yt:t.slice(h,h+i[0])}}}readBinary(t){return this.readJSON(this.binaryToJSON(t))}writeBinary(t){const{json:s,resources:e}=this.writeJSON(t,{basename:"",isGLB:!0,logger:this.xt}),r=JSON.stringify(s),i=f.pad(f.encodeText(r),32),n=new Uint32Array([i.byteLength,1313821514]).buffer,h=f.concat([n,i]),o=f.pad(Object.values(e)[0]||new ArrayBuffer(0),0),u=new Uint32Array([o.byteLength,5130562]).buffer,c=f.concat([u,o]),a=new Uint32Array([1179937895,2,12+h.byteLength+c.byteLength]).buffer;return f.concat([a,h,c])}}class ot extends ht{constructor(){super(),this.At=require("fs"),this.Et=require("path")}read(t){const s=this.readAsJSON(t);return tt.read(s,{extensions:this.rt,dependencies:this.Tt,logger:this.xt})}readAsJSON(t){return t.match(/\.glb$/)||t.match(/^data:application\/octet-stream;/)?this.bt(t):this.St(t)}write(t,s){t.match(/\.glb$/)?this.Mt(t,s):this.Nt(t,s)}bt(t){const s=this.At.readFileSync(t),e=f.trim(s);return this.binaryToJSON(e)}St(t){const s=this.Et.dirname(t),e={json:JSON.parse(this.At.readFileSync(t,"utf8")),resources:{}};return[...e.json.images||[],...e.json.buffers||[]].forEach(t=>{if(t.uri)if(t.uri.match(/data:/)){const s=`__${A()}.${p.extension(t.uri)}`;e.resources[s]=f.createBufferFromDataURI(t.uri),t.uri=s}else{const r=this.Et.resolve(s,t.uri);e.resources[t.uri]=f.trim(this.At.readFileSync(r))}}),e}Nt(t,s){const{json:e,resources:r}=nt.write(s,{basename:p.basename(t),isGLB:!1,logger:this.xt}),{At:i,Et:n}=this,h=n.dirname(t);i.writeFileSync(t,JSON.stringify(e,null,2)),Object.keys(r).forEach(t=>{const s=Buffer.from(r[t]);i.writeFileSync(n.join(h,t),s)})}Mt(t,s){const e=Buffer.from(this.writeBinary(s));this.At.writeFileSync(t,e)}}const ut={};class ct extends ht{constructor(t=ut){super(),this.Rt=t}read(t){return this.readAsJSON(t).then(t=>this.readJSON(t))}readAsJSON(t){return t.match(/\.glb$/)||t.match(/^data:application\/octet-stream;/)?this.bt(t):this.St(t)}St(t){const s={json:{},resources:{}};return fetch(t,this.Rt).then(t=>t.json()).then(t=>{s.json=t;const e=[...t.images,...t.buffers].map(t=>{if(t.uri)return fetch(t.uri,this.Rt).then(t=>t.arrayBuffer()).then(e=>{s.resources[t.uri]=e})});return Promise.all(e).then(()=>s)})}bt(t){return fetch(t,this.Rt).then(t=>t.arrayBuffer()).then(t=>this.binaryToJSON(t))}}export{N as Accessor,R as Animation,C as AnimationChannel,I as AnimationSampler,_ as Buffer,f as BufferUtils,E as COPY_IDENTITY,B as Camera,d as ColorUtils,Y as Document,Z as Extension,O as ExtensionProperty,p as FileUtils,h as GLB_BUFFER,c as Graph,a as GraphChild,g as ImageUtils,v as Logger,j as Material,m as MathUtils,D as Mesh,J as Node,ot as NodeIO,$ as Primitive,z as PrimitiveTarget,b as Property,o as PropertyType,X as ReaderContext,V as Root,W as Scene,q as Skin,H as Texture,L as TextureInfo,U as TextureLink,k as TextureSampler,ct as WebIO,et as WriterContext,A as uuid};
 //# sourceMappingURL=core.modern.js.map

dist/extension.d.ts

@@ -46,2 +46,4 @@ import { PropertyType } from './constants';
     readonly provideTypes: PropertyType[];
+    /** Dependency IDs needed by this extension, to be installed before I/O. */
+    readonly dependencies: string[];
     protected required: boolean;
@@ -75,2 +77,4 @@ protected properties: Set<ExtensionProperty>;
      */
+    /** Installs dependencies required by the extension. */
+    install(key: string, dependency: unknown): this;
     /**
@@ -77,0 +81,0 @@ * Used by the {@link PlatformIO} utilities when reading a glTF asset. This method may

dist/io/platform-io.d.ts

@@ -22,2 +22,5 @@ import { Document } from '../document';
     protected _extensions: typeof Extension[];
+    protected _dependencies: {
+        [key: string]: unknown;
+    };
     /** Sets the {@link Logger} used by this I/O instance. Defaults to Logger.DEFAULT_INSTANCE. */
@@ -27,2 +30,6 @@ setLogger(logger: Logger): this;
     registerExtensions(extensions: typeof Extension[]): this;
+    /** Registers dependencies used (e.g. by extensions) in the I/O process. */
+    registerDependencies(dependencies: {
+        [key: string]: unknown;
+    }): this;
     /**********************************************************************************************
@@ -29,0 +36,0 @@ * JSON.

dist/io/reader.d.ts

@@ -7,3 +7,6 @@ import { Document } from '../document';
     logger?: Logger;
-    extensions?: (typeof Extension)[];
+    extensions: (typeof Extension)[];
+    dependencies: {
+        [key: string]: unknown;
+    };
 }
@@ -10,0 +13,0 @@ /** @hidden */

package.json

 {
   "name": "@gltf-transform/core",
-  "version": "0.7.0-alpha.1",
+  "version": "0.7.0-alpha.2",
   "repository": "github:donmccurdy/glTF-Transform",
@@ -42,3 +42,3 @@ "description": "glTF 2.0 SDK for JavaScript, TypeScript, and Node.js",
   },
-  "gitHead": "86d19f38214db00d61d1da70fc3c18fc4cb34ff3"
+  "gitHead": "c13e71257c34aaf7a05114d4740e5a2aec375807"
 }

src/core.ts

@@ -7,3 +7,3 @@ export { Document, Transform } from './document';
 export { BufferUtils, ColorUtils, FileUtils, ImageUtils, MathUtils, Logger, uuid } from './utils/';
-export { PropertyType, vec2, vec3, vec4, mat3, mat4 } from './constants';
+export { TypedArray, PropertyType, vec2, vec3, vec4, mat3, mat4, GLB_BUFFER } from './constants';
 
@@ -10,0 +10,0 @@ /** [[include:CONCEPTS.md]] */

src/extension.ts

@@ -45,2 +45,5 @@ import { PropertyType } from './constants';
 
+	/** Dependency IDs needed by this extension, to be installed before I/O. */
+	public readonly dependencies: string[] = [];
+
 	protected required = false;
@@ -101,2 +104,8 @@ protected properties: Set<ExtensionProperty> = new Set();
 
+	/** Installs dependencies required by the extension. */
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
+	public install(key: string, dependency: unknown): this {
+		return this;
+	}
+
 	/**
@@ -103,0 +112,0 @@ * Used by the {@link PlatformIO} utilities when reading a glTF asset. This method may

src/io/node-io.ts

@@ -57,3 +57,7 @@ import { Document } from '../document';
 		const jsonDoc = this.readAsJSON(uri);
-		return GLTFReader.read(jsonDoc, {extensions: this._extensions, logger: this._logger});
+		return GLTFReader.read(jsonDoc, {
+			extensions: this._extensions,
+			dependencies: this._dependencies,
+			logger: this._logger
+		});
 	}
@@ -60,0 +64,0 @@

src/io/platform-io.ts

@@ -25,4 +25,4 @@ import { GLB_BUFFER } from '../constants';
 	protected _logger = Logger.DEFAULT_INSTANCE;
-
 	protected _extensions: typeof Extension[] = [];
+	protected _dependencies: {[key: string]: unknown} = {};
 
@@ -41,2 +41,8 @@ /** Sets the {@link Logger} used by this I/O instance. Defaults to Logger.DEFAULT_INSTANCE. */
 
+	/** Registers dependencies used (e.g. by extensions) in the I/O process. */
+	public registerDependencies(dependencies: {[key: string]: unknown}): this {
+		Object.assign(this._dependencies, dependencies);
+		return this;
+	}
+
 	/**********************************************************************************************
@@ -48,3 +54,7 @@ * JSON.
 	public readJSON (jsonDoc: JSONDocument): Document {
-		return GLTFReader.read(jsonDoc, {extensions: this._extensions, logger: this._logger});
+		return GLTFReader.read(jsonDoc, {
+			extensions: this._extensions,
+			dependencies: this._dependencies,
+			logger: this._logger
+		});
 	}
@@ -51,0 +61,0 @@

src/io/reader.ts

@@ -21,3 +21,4 @@ import { getRotation, getScaling, getTranslation } from 'gl-matrix/mat4'
 	logger?: Logger;
-	extensions?: (typeof Extension)[];
+	extensions: (typeof Extension)[];
+	dependencies: {[key: string]: unknown};
 }
@@ -28,2 +29,3 @@
 	extensions: [],
+	dependencies: {},
 };
@@ -59,4 +61,8 @@
 			if (extensionsUsed.includes(Extension.EXTENSION_NAME)) {
-				doc.createExtension(Extension as ExtensionConstructor)
+				const extension = doc.createExtension(Extension as ExtensionConstructor)
 					.setRequired(extensionsRequired.includes(Extension.EXTENSION_NAME));
+
+				for (const key of extension.dependencies) {
+					extension.install(key, options.dependencies[key]);
+				}
 			}
@@ -97,2 +103,9 @@ }
 
+			if (accessorDef.normalized !== undefined) {
+				accessor.setNormalized(accessorDef.normalized);
+			}
+
+			// KHR_draco_mesh_compression.
+			if (accessorDef.bufferView === undefined && !accessorDef.sparse) return accessor;
+
 			let array: TypedArray;
@@ -107,6 +120,2 @@
 
-			if (accessorDef.normalized !== undefined) {
-				accessor.setNormalized(accessorDef.normalized);
-			}
-
 			accessor.setArray(array);
@@ -255,2 +264,5 @@ return accessor;
 		const meshDefs = json.meshes || [];
+		doc.getRoot().listExtensionsUsed()
+			.filter((extension) => extension.provideTypes.includes(PropertyType.PRIMITIVE))
+			.forEach((extension) => extension.provide(context, PropertyType.PRIMITIVE));
 		context.meshes = meshDefs.map((meshDef) => {
@@ -257,0 +269,0 @@ const mesh = doc.createMesh(meshDef.name);

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