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178 lines
5.2 KiB
178 lines
5.2 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - GLTFloader + variants</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - GLTFLoader + <a href="https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_variants" target="_blank" rel="noopener">KHR_materials_variants</a><br />
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<a href="https://github.com/pushmatrix/glTF-Sample-Models/tree/master/2.0/MaterialsVariantsShoe" target="_blank" rel="noopener">Materials Variants Shoe</a> by
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<a href="https://github.com/Shopify" target="_blank" rel="noopener">Shopify, Inc</a><br />
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<a href="https://hdrihaven.com/hdri/?h=quarry_01" target="_blank" rel="noopener">Quarry</a> by <a href="https://hdrihaven.com/" target="_blank" rel="noopener">HDRI Haven</a>
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</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';
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let camera, scene, renderer;
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let gui;
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const state = { variant: 'midnight' };
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init();
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render();
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function init() {
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const container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
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camera.position.set( 2.5, 1.5, 3.0 );
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scene = new THREE.Scene();
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new RGBELoader()
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.setPath( 'textures/equirectangular/' )
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.load( 'quarry_01_1k.hdr', function ( texture ) {
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texture.mapping = THREE.EquirectangularReflectionMapping;
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scene.background = texture;
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scene.environment = texture;
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render();
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// model
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const loader = new GLTFLoader().setPath( 'models/gltf/MaterialsVariantsShoe/glTF/' );
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loader.load( 'MaterialsVariantsShoe.gltf', function ( gltf ) {
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gltf.scene.scale.set( 10.0, 10.0, 10.0 );
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scene.add( gltf.scene );
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// GUI
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gui = new GUI();
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// Details of the KHR_materials_variants extension used here can be found below
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// https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_variants
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const parser = gltf.parser;
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const variantsExtension = gltf.userData.gltfExtensions[ 'KHR_materials_variants' ];
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const variants = variantsExtension.variants.map( ( variant ) => variant.name );
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const variantsCtrl = gui.add( state, 'variant', variants ).name( 'Variant' );
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selectVariant( scene, parser, variantsExtension, state.variant );
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variantsCtrl.onChange( ( value ) => selectVariant( scene, parser, variantsExtension, value ) );
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render();
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} );
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} );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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renderer.toneMappingExposure = 1;
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renderer.outputEncoding = THREE.sRGBEncoding;
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container.appendChild( renderer.domElement );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render ); // use if there is no animation loop
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controls.minDistance = 2;
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controls.maxDistance = 10;
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controls.target.set( 0, 0.5, - 0.2 );
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controls.update();
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window.addEventListener( 'resize', onWindowResize );
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}
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function selectVariant( scene, parser, extension, variantName ) {
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const variantIndex = extension.variants.findIndex( ( v ) => v.name.includes( variantName ) );
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scene.traverse( async ( object ) => {
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if ( ! object.isMesh || ! object.userData.gltfExtensions ) return;
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const meshVariantDef = object.userData.gltfExtensions[ 'KHR_materials_variants' ];
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if ( ! meshVariantDef ) return;
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if ( ! object.userData.originalMaterial ) {
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object.userData.originalMaterial = object.material;
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}
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const mapping = meshVariantDef.mappings
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.find( ( mapping ) => mapping.variants.includes( variantIndex ) );
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if ( mapping ) {
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object.material = await parser.getDependency( 'material', mapping.material );
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parser.assignFinalMaterial( object );
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} else {
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object.material = object.userData.originalMaterial;
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}
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render();
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} );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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render();
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}
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//
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function render() {
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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