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ktongue/docker_container / simsite /frontend /node_modules /three /examples /jsm /loaders /MaterialXLoader.js
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import {
 FileLoader,
 Loader,
 TextureLoader,
 RepeatWrapping
} from 'three';
import {
 MeshPhysicalNodeMaterial,
 float, bool, int, vec2, vec3, vec4, color, texture,
 positionLocal,
 add, sub, mul, div, mod, abs, sign, floor, ceil, round, pow, sin, cos, tan,
 asin, acos, atan2, sqrt, exp, clamp, min, max, normalize, length, dot, cross, normalMap,
 remap, smoothstep, luminance, mx_rgbtohsv, mx_hsvtorgb,
 mix,
 mx_ramplr, mx_ramptb, mx_splitlr, mx_splittb,
 mx_fractal_noise_float, mx_noise_float, mx_cell_noise_float, mx_worley_noise_float,
 mx_transform_uv,
 mx_safepower, mx_contrast,
 mx_srgb_texture_to_lin_rec709,
 saturation
} from '../nodes/Nodes.js';
const colorSpaceLib = {
 mx_srgb_texture_to_lin_rec709
};
class MXElement {
constructor( name, nodeFunc, params = null ) {
this.name = name;
 this.nodeFunc = nodeFunc;
 this.params = params;
}
}
// Ref: https://github.com/mrdoob/three.js/issues/24674
const MXElements = [
// << Math >>
 new MXElement( 'add', add, [ 'in1', 'in2' ] ),
 new MXElement( 'subtract', sub, [ 'in1', 'in2' ] ),
 new MXElement( 'multiply', mul, [ 'in1', 'in2' ] ),
 new MXElement( 'divide', div, [ 'in1', 'in2' ] ),
 new MXElement( 'modulo', mod, [ 'in1', 'in2' ] ),
 new MXElement( 'absval', abs, [ 'in1', 'in2' ] ),
 new MXElement( 'sign', sign, [ 'in1', 'in2' ] ),
 new MXElement( 'floor', floor, [ 'in1', 'in2' ] ),
 new MXElement( 'ceil', ceil, [ 'in1', 'in2' ] ),
 new MXElement( 'round', round, [ 'in1', 'in2' ] ),
 new MXElement( 'power', pow, [ 'in1', 'in2' ] ),
 new MXElement( 'sin', sin, [ 'in' ] ),
 new MXElement( 'cos', cos, [ 'in' ] ),
 new MXElement( 'tan', tan, [ 'in' ] ),
 new MXElement( 'asin', asin, [ 'in' ] ),
 new MXElement( 'acos', acos, [ 'in' ] ),
 new MXElement( 'atan2', atan2, [ 'in1', 'in2' ] ),
 new MXElement( 'sqrt', sqrt, [ 'in' ] ),
 //new MtlXElement( 'ln', ... ),
 new MXElement( 'exp', exp, [ 'in' ] ),
 new MXElement( 'clamp', clamp, [ 'in', 'low', 'high' ] ),
 new MXElement( 'min', min, [ 'in1', 'in2' ] ),
 new MXElement( 'max', max, [ 'in1', 'in2' ] ),
 new MXElement( 'normalize', normalize, [ 'in' ] ),
 new MXElement( 'magnitude', length, [ 'in1', 'in2' ] ),
 new MXElement( 'dotproduct', dot, [ 'in1', 'in2' ] ),
 new MXElement( 'crossproduct', cross, [ 'in' ] ),
 //new MtlXElement( 'transformpoint', ... ),
 //new MtlXElement( 'transformvector', ... ),
 //new MtlXElement( 'transformnormal', ... ),
 //new MtlXElement( 'transformmatrix', ... ),
 new MXElement( 'normalmap', normalMap, [ 'in', 'scale' ] ),
 //new MtlXElement( 'transpose', ... ),
 //new MtlXElement( 'determinant', ... ),
 //new MtlXElement( 'invertmatrix', ... ),
 //new MtlXElement( 'rotate2d', rotateUV, [ 'in', radians( 'amount' )** ] ),
 //new MtlXElement( 'rotate3d', ... ),
 //new MtlXElement( 'arrayappend', ... ),
 //new MtlXElement( 'dot', ... ),
// << Adjustment >>
 new MXElement( 'remap', remap, [ 'in', 'inlow', 'inhigh', 'outlow', 'outhigh' ] ),
 new MXElement( 'smoothstep', smoothstep, [ 'in', 'low', 'high' ] ),
 //new MtlXElement( 'curveadjust', ... ),
 //new MtlXElement( 'curvelookup', ... ),
 new MXElement( 'luminance', luminance, [ 'in', 'lumacoeffs' ] ),
 new MXElement( 'rgbtohsv', mx_rgbtohsv, [ 'in' ] ),
 new MXElement( 'hsvtorgb', mx_hsvtorgb, [ 'in' ] ),
// << Mix >>
 new MXElement( 'mix', mix, [ 'bg', 'fg', 'mix' ] ),
// << Channel >>
 new MXElement( 'combine2', vec2, [ 'in1', 'in2' ] ),
 new MXElement( 'combine3', vec3, [ 'in1', 'in2', 'in3' ] ),
 new MXElement( 'combine4', vec4, [ 'in1', 'in2', 'in3', 'in4' ] ),
// << Procedural >>
 new MXElement( 'ramplr', mx_ramplr, [ 'valuel', 'valuer', 'texcoord' ] ),
 new MXElement( 'ramptb', mx_ramptb, [ 'valuet', 'valueb', 'texcoord' ] ),
 new MXElement( 'splitlr', mx_splitlr, [ 'valuel', 'valuer', 'texcoord' ] ),
 new MXElement( 'splittb', mx_splittb, [ 'valuet', 'valueb', 'texcoord' ] ),
 new MXElement( 'noise2d', mx_noise_float, [ 'texcoord', 'amplitude', 'pivot' ] ),
 new MXElement( 'noise3d', mx_noise_float, [ 'texcoord', 'amplitude', 'pivot' ] ),
 new MXElement( 'fractal3d', mx_fractal_noise_float, [ 'position', 'octaves', 'lacunarity', 'diminish', 'amplitude' ] ),
 new MXElement( 'cellnoise2d', mx_cell_noise_float, [ 'texcoord' ] ),
 new MXElement( 'cellnoise3d', mx_cell_noise_float, [ 'texcoord' ] ),
 new MXElement( 'worleynoise2d', mx_worley_noise_float, [ 'texcoord', 'jitter' ] ),
 new MXElement( 'worleynoise3d', mx_worley_noise_float, [ 'texcoord', 'jitter' ] ),
// << Supplemental >>
 //new MtlXElement( 'tiledimage', ... ),
 //new MtlXElement( 'triplanarprojection', triplanarTextures, [ 'filex', 'filey', 'filez' ] ),
 //new MtlXElement( 'ramp4', ... ),
 //new MtlXElement( 'place2d', mx_place2d, [ 'texcoord', 'pivot', 'scale', 'rotate', 'offset' ] ),
 new MXElement( 'safepower', mx_safepower, [ 'in1', 'in2' ] ),
 new MXElement( 'contrast', mx_contrast, [ 'in', 'amount', 'pivot' ] ),
 //new MtlXElement( 'hsvadjust', ... ),
 new MXElement( 'saturate', saturation, [ 'in', 'amount' ] ),
 //new MtlXElement( 'extract', ... ),
 //new MtlXElement( 'separate2', ... ),
 //new MtlXElement( 'separate3', ... ),
 //new MtlXElement( 'separate4', ... )
];
const MtlXLibrary = {};
MXElements.forEach( element => MtlXLibrary[ element.name ] = element );
class MaterialXLoader extends Loader {
constructor( manager ) {
super( manager );
}
load( url, onLoad, onProgress, onError ) {
new FileLoader( this.manager )
 .setPath( this.path )
 .load( url, async ( text ) => {
try {
onLoad( this.parse( text ) );
} catch ( e ) {
onError( e );
}
}, onProgress, onError );
return this;
}
parse( text ) {
return new MaterialX( this.manager, this.path ).parse( text );
}
}
class MaterialXNode {
constructor( materialX, nodeXML, nodePath = '' ) {
this.materialX = materialX;
 this.nodeXML = nodeXML;
 this.nodePath = nodePath ? nodePath + '/' + this.name : this.name;
this.parent = null;
this.node = null;
this.children = [];
}
get element() {
return this.nodeXML.nodeName;
}
get nodeGraph() {
return this.getAttribute( 'nodegraph' );
}
get nodeName() {
return this.getAttribute( 'nodename' );
}
get interfaceName() {
return this.getAttribute( 'interfacename' );
}
get output() {
return this.getAttribute( 'output' );
}
get name() {
return this.getAttribute( 'name' );
}
get type() {
return this.getAttribute( 'type' );
}
get value() {
return this.getAttribute( 'value' );
}
getNodeGraph() {
let nodeX = this;
while ( nodeX !== null ) {
if ( nodeX.element === 'nodegraph' ) {
break;
}
nodeX = nodeX.parent;
}
return nodeX;
}
getRoot() {
let nodeX = this;
while ( nodeX.parent !== null ) {
nodeX = nodeX.parent;
}
return nodeX;
}
get referencePath() {
let referencePath = null;
if ( this.nodeGraph !== null && this.output !== null ) {
referencePath = this.nodeGraph + '/' + this.output;
} else if ( this.nodeName !== null || this.interfaceName !== null ) {
referencePath = this.getNodeGraph().nodePath + '/' + ( this.nodeName || this.interfaceName );
}
return referencePath;
}
get hasReference() {
return this.referencePath !== null;
}
get isConst() {
return this.element === 'input' && this.value !== null && this.type !== 'filename';
}
getColorSpaceNode() {
const csSource = this.getAttribute( 'colorspace' );
 const csTarget = this.getRoot().getAttribute( 'colorspace' );
const nodeName = `mx_${ csSource }_to_${ csTarget }`;
return colorSpaceLib[ nodeName ];
}
getTexture() {
const filePrefix = this.getRecursiveAttribute( 'fileprefix' ) || '';
const texture = this.materialX.textureLoader.load( filePrefix + this.value );
 texture.wrapS = texture.wrapT = RepeatWrapping;
 texture.flipY = false;
return texture;
}
getClassFromType( type ) {
let nodeClass = null;
if ( type === 'integer' ) nodeClass = int;
 else if ( type === 'float' ) nodeClass = float;
 else if ( type === 'vector2' ) nodeClass = vec2;
 else if ( type === 'vector3' ) nodeClass = vec3;
 else if ( type === 'vector4' || type === 'color4' ) nodeClass = vec4;
 else if ( type === 'color3' ) nodeClass = color;
 else if ( type === 'boolean' ) nodeClass = bool;
return nodeClass;
}
getNode() {
let node = this.node;
if ( node !== null ) {
return node;
}
//
const type = this.type;
if ( this.isConst ) {
const nodeClass = this.getClassFromType( type );
node = nodeClass( ...this.getVector() );
} else if ( this.hasReference ) {
node = this.materialX.getMaterialXNode( this.referencePath ).getNode();
} else {
const element = this.element;
if ( element === 'convert' ) {
const nodeClass = this.getClassFromType( type );
node = nodeClass( this.getNodeByName( 'in' ) );
} else if ( element === 'constant' ) {
node = this.getNodeByName( 'value' );
} else if ( element === 'position' ) {
node = positionLocal;
} else if ( element === 'tiledimage' ) {
const file = this.getChildByName( 'file' );
const textureFile = file.getTexture();
 const uvTiling = mx_transform_uv( ...this.getNodesByNames( [ 'uvtiling', 'uvoffset' ] ) );
node = texture( textureFile, uvTiling );
const colorSpaceNode = file.getColorSpaceNode();
if ( colorSpaceNode ) {
node = colorSpaceNode( node );
}
} else if ( element === 'image' ) {
const file = this.getChildByName( 'file' );
 const uvNode = this.getNodeByName( 'texcoord' );
const textureFile = file.getTexture();
node = texture( textureFile, uvNode );
const colorSpaceNode = file.getColorSpaceNode();
if ( colorSpaceNode ) {
node = colorSpaceNode( node );
}
} else if ( MtlXLibrary[ element ] !== undefined ) {
const nodeElement = MtlXLibrary[ element ];
node = nodeElement.nodeFunc( ...this.getNodesByNames( ...nodeElement.params ) );
}
}
//
if ( node === null ) {
console.warn( `THREE.MaterialXLoader: Unexpected node ${ new XMLSerializer().serializeToString( this.nodeXML ) }.` );
node = float( 0 );
}
//
const nodeToTypeClass = this.getClassFromType( type );
if ( nodeToTypeClass !== null ) {
node = nodeToTypeClass( node );
}
node.name = this.name;
this.node = node;
return node;
}
getChildByName( name ) {
for ( const input of this.children ) {
if ( input.name === name ) {
return input;
}
}
}
getNodes() {
const nodes = {};
for ( const input of this.children ) {
const node = input.getNode();
nodes[ node.name ] = node;
}
return nodes;
}
getNodeByName( name ) {
const child = this.getChildByName( name );
return child ? child.getNode() : undefined;
}
getNodesByNames( ...names ) {
const nodes = [];
for ( const name of names ) {
const node = this.getNodeByName( name );
if ( node ) nodes.push( node );
}
return nodes;
}
getValue() {
return this.value.trim();
}
getVector() {
const vector = [];
for ( const val of this.getValue().split( /[,|\s]/ ) ) {
if ( val !== '' ) {
vector.push( Number( val.trim() ) );
}
}
return vector;
}
getAttribute( name ) {
return this.nodeXML.getAttribute( name );
}
getRecursiveAttribute( name ) {
let attribute = this.nodeXML.getAttribute( name );
if ( attribute === null && this.parent !== null ) {
attribute = this.parent.getRecursiveAttribute( name );
}
return attribute;
}
setStandardSurfaceToGltfPBR( material ) {
const inputs = this.getNodes();
//
let colorNode = null;
if ( inputs.base && inputs.base_color ) colorNode = mul( inputs.base, inputs.base_color );
 else if ( inputs.base ) colorNode = inputs.base;
 else if ( inputs.base_color ) colorNode = inputs.base_color;
//
let roughnessNode = null;
if ( inputs.specular_roughness ) roughnessNode = inputs.specular_roughness;
//
let metalnessNode = null;
if ( inputs.metalness ) metalnessNode = inputs.metalness;
//
let clearcoatNode = null;
 let clearcoatRoughnessNode = null;
if ( inputs.coat ) clearcoatNode = inputs.coat;
 if ( inputs.coat_roughness ) clearcoatRoughnessNode = inputs.coat_roughness;
if ( inputs.coat_color ) {
colorNode = colorNode ? mul( colorNode, inputs.coat_color ) : colorNode;
}
//
let normalNode = null;
if ( inputs.normal ) normalNode = inputs.normal;
//
let emissiveNode = null;
if ( inputs.emission ) emissiveNode = inputs.emission;
 if ( inputs.emissionColor ) {
emissiveNode = emissiveNode ? mul( emissiveNode, inputs.emissionColor ) : emissiveNode;
}
//
material.colorNode = colorNode || color( 0.8, 0.8, 0.8 );
 material.roughnessNode = roughnessNode || float( 0.2 );
 material.metalnessNode = metalnessNode || float( 0 );
 material.clearcoatNode = clearcoatNode || float( 0 );
 material.clearcoatRoughnessNode = clearcoatRoughnessNode || float( 0 );
 if ( normalNode ) material.normalNode = normalNode;
 if ( emissiveNode ) material.emissiveNode = emissiveNode;
}
/*setGltfPBR( material ) {
 const inputs = this.getNodes();
 console.log( inputs );
 }*/
setMaterial( material ) {
const element = this.element;
if ( element === 'gltf_pbr' ) {
//this.setGltfPBR( material );
} else if ( element === 'standard_surface' ) {
this.setStandardSurfaceToGltfPBR( material );
}
}
toMaterial() {
const material = new MeshPhysicalNodeMaterial();
 material.name = this.name;
for ( const nodeX of this.children ) {
const shaderProperties = this.materialX.getMaterialXNode( nodeX.nodeName );
 shaderProperties.setMaterial( material );
}
return material;
}
toMaterials() {
const materials = {};
for ( const nodeX of this.children ) {
if ( nodeX.element === 'surfacematerial' ) {
const material = nodeX.toMaterial();
materials[ material.name ] = material;
}
}
return materials;
}
add( materialXNode ) {
materialXNode.parent = this;
this.children.push( materialXNode );
}
}
class MaterialX {
constructor( manager, path ) {
this.manager = manager;
 this.path = path;
 this.resourcePath = '';
this.nodesXLib = new Map();
 //this.nodesXRefLib = new WeakMap();
this.textureLoader = new TextureLoader( manager );
}
addMaterialXNode( materialXNode ) {
this.nodesXLib.set( materialXNode.nodePath, materialXNode );
}
/*getMaterialXNodeFromXML( xmlNode ) {
 return this.nodesXRefLib.get( xmlNode );
 }*/
getMaterialXNode( ...names ) {
return this.nodesXLib.get( names.join( '/' ) );
}
parseNode( nodeXML, nodePath = '' ) {
const materialXNode = new MaterialXNode( this, nodeXML, nodePath );
 if ( materialXNode.nodePath ) this.addMaterialXNode( materialXNode );
for ( const childNodeXML of nodeXML.children ) {
const childMXNode = this.parseNode( childNodeXML, materialXNode.nodePath );
 materialXNode.add( childMXNode );
}
return materialXNode;
}
parse( text ) {
const rootXML = new DOMParser().parseFromString( text, 'application/xml' ).documentElement;
this.textureLoader.setPath( this.path );
//
const materials = this.parseNode( rootXML ).toMaterials();
return { materials };
}
}
export { MaterialXLoader };

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