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248 lines
6.2 KiB
248 lines
6.2 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>threejs webgl - materials - physical - reflectivity</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="container"></div>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">threejs</a> - Physical Material Reflectivity (reflectance at F0)<br/>
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example by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</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 Stats from 'three/addons/libs/stats.module.js';
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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 { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
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import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';
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let container, stats;
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const params = {
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projection: 'normal',
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autoRotate: true,
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reflectivity: 1,
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background: false,
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exposure: 1,
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gemColor: 'Green'
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};
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let camera, scene, renderer;
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let gemBackMaterial, gemFrontMaterial;
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const objects = [];
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 0.0, - 10, 20 * 3.5 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0x000000 );
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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gemBackMaterial = new THREE.MeshPhysicalMaterial( {
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map: null,
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color: 0x0000ff,
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metalness: 1,
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roughness: 0,
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opacity: 0.5,
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side: THREE.BackSide,
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transparent: true,
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envMapIntensity: 5,
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premultipliedAlpha: true
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// TODO: Add custom blend mode that modulates background color by this materials color.
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} );
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gemFrontMaterial = new THREE.MeshPhysicalMaterial( {
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map: null,
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color: 0x0000ff,
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metalness: 0,
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roughness: 0,
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opacity: 0.25,
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side: THREE.FrontSide,
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transparent: true,
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envMapIntensity: 10,
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premultipliedAlpha: true
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} );
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const loader = new OBJLoader();
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loader.load( 'models/obj/emerald.obj', function ( object ) {
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object.traverse( function ( child ) {
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if ( child instanceof THREE.Mesh ) {
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child.material = gemBackMaterial;
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const second = child.clone();
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second.material = gemFrontMaterial;
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const parent = new THREE.Group();
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parent.add( second );
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parent.add( child );
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scene.add( parent );
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objects.push( parent );
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}
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} );
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} );
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new RGBELoader()
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.setPath( 'textures/equirectangular/' )
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.load( 'royal_esplanade_1k.hdr', function ( texture ) {
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texture.mapping = THREE.EquirectangularReflectionMapping;
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gemFrontMaterial.envMap = gemBackMaterial.envMap = texture;
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gemFrontMaterial.needsUpdate = gemBackMaterial.needsUpdate = true;
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} );
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// Lights
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scene.add( new THREE.AmbientLight( 0x222222 ) );
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const pointLight1 = new THREE.PointLight( 0xffffff );
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pointLight1.position.set( 150, 10, 0 );
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pointLight1.castShadow = false;
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scene.add( pointLight1 );
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const pointLight2 = new THREE.PointLight( 0xffffff );
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pointLight2.position.set( - 150, 0, 0 );
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scene.add( pointLight2 );
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const pointLight3 = new THREE.PointLight( 0xffffff );
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pointLight3.position.set( 0, - 10, - 150 );
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scene.add( pointLight3 );
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const pointLight4 = new THREE.PointLight( 0xffffff );
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pointLight4.position.set( 0, 0, 150 );
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scene.add( pointLight4 );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.shadowMap.enabled = true;
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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container.appendChild( renderer.domElement );
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renderer.outputEncoding = THREE.sRGBEncoding;
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stats = new Stats();
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container.appendChild( stats.dom );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 20;
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controls.maxDistance = 200;
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window.addEventListener( 'resize', onWindowResize );
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const gui = new GUI();
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gui.add( params, 'reflectivity', 0, 1 );
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gui.add( params, 'exposure', 0, 2 );
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gui.add( params, 'autoRotate' );
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gui.add( params, 'gemColor', [ 'Blue', 'Green', 'Red', 'White', 'Black' ] );
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gui.open();
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}
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function onWindowResize() {
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const width = window.innerWidth;
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const height = window.innerHeight;
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camera.aspect = width / height;
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camera.updateProjectionMatrix();
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renderer.setSize( width, height );
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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stats.begin();
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render();
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stats.end();
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}
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function render() {
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if ( gemBackMaterial !== undefined && gemFrontMaterial !== undefined ) {
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gemFrontMaterial.reflectivity = gemBackMaterial.reflectivity = params.reflectivity;
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let newColor = gemBackMaterial.color;
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switch ( params.gemColor ) {
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case 'Blue': newColor = new THREE.Color( 0x000088 ); break;
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case 'Red': newColor = new THREE.Color( 0x880000 ); break;
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case 'Green': newColor = new THREE.Color( 0x008800 ); break;
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case 'White': newColor = new THREE.Color( 0x888888 ); break;
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case 'Black': newColor = new THREE.Color( 0x0f0f0f ); break;
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}
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gemBackMaterial.color = gemFrontMaterial.color = newColor;
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}
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renderer.toneMappingExposure = params.exposure;
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camera.lookAt( scene.position );
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if ( params.autoRotate ) {
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for ( let i = 0, l = objects.length; i < l; i ++ ) {
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const object = objects[ i ];
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object.rotation.y += 0.005;
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}
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}
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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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