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223 lines
6.1 KiB
223 lines
6.1 KiB
3 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 - materials</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> - webgl materials
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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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let stats;
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let camera, scene, renderer;
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let pointLight;
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const objects = [], materials = [];
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init();
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animate();
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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, 1, 2000 );
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camera.position.set( 0, 200, 800 );
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scene = new THREE.Scene();
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// Grid
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const helper = new THREE.GridHelper( 1000, 40, 0x303030, 0x303030 );
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helper.position.y = - 75;
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scene.add( helper );
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// Materials
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const texture = new THREE.Texture( generateTexture() );
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texture.needsUpdate = true;
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materials.push( new THREE.MeshLambertMaterial( { map: texture, transparent: true } ) );
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materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd } ) );
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materials.push( new THREE.MeshPhongMaterial( { color: 0xdddddd, specular: 0x009900, shininess: 30, flatShading: true } ) );
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materials.push( new THREE.MeshNormalMaterial() );
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materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, transparent: true, blending: THREE.AdditiveBlending } ) );
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materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd } ) );
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materials.push( new THREE.MeshPhongMaterial( { color: 0xdddddd, specular: 0x009900, shininess: 30, map: texture, transparent: true } ) );
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materials.push( new THREE.MeshNormalMaterial( { flatShading: true } ) );
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materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, wireframe: true } ) );
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materials.push( new THREE.MeshDepthMaterial() );
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materials.push( new THREE.MeshLambertMaterial( { color: 0x666666, emissive: 0xff0000 } ) );
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materials.push( new THREE.MeshPhongMaterial( { color: 0x000000, specular: 0x666666, emissive: 0xff0000, shininess: 10, opacity: 0.9, transparent: true } ) );
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materials.push( new THREE.MeshBasicMaterial( { map: texture, transparent: true } ) );
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// Spheres geometry
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const geometry = new THREE.SphereGeometry( 70, 32, 16 );
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for ( let i = 0, l = materials.length; i < l; i ++ ) {
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addMesh( geometry, materials[ i ] );
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}
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// Lights
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scene.add( new THREE.AmbientLight( 0x111111 ) );
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const directionalLight = new THREE.DirectionalLight( 0xffffff, 0.125 );
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directionalLight.position.x = Math.random() - 0.5;
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directionalLight.position.y = Math.random() - 0.5;
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directionalLight.position.z = Math.random() - 0.5;
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directionalLight.position.normalize();
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scene.add( directionalLight );
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pointLight = new THREE.PointLight( 0xffffff, 1 );
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scene.add( pointLight );
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pointLight.add( new THREE.Mesh( new THREE.SphereGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) ) );
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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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container.appendChild( renderer.domElement );
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//
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function addMesh( geometry, material ) {
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const mesh = new THREE.Mesh( geometry, material );
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mesh.position.x = ( objects.length % 4 ) * 200 - 400;
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mesh.position.z = Math.floor( objects.length / 4 ) * 200 - 200;
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mesh.rotation.x = Math.random() * 200 - 100;
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mesh.rotation.y = Math.random() * 200 - 100;
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mesh.rotation.z = Math.random() * 200 - 100;
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objects.push( mesh );
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scene.add( mesh );
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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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}
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function generateTexture() {
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const canvas = document.createElement( 'canvas' );
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canvas.width = 256;
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canvas.height = 256;
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const context = canvas.getContext( '2d' );
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const image = context.getImageData( 0, 0, 256, 256 );
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let x = 0, y = 0;
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for ( let i = 0, j = 0, l = image.data.length; i < l; i += 4, j ++ ) {
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x = j % 256;
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y = ( x === 0 ) ? y + 1 : y;
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image.data[ i ] = 255;
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image.data[ i + 1 ] = 255;
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image.data[ i + 2 ] = 255;
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image.data[ i + 3 ] = Math.floor( x ^ y );
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}
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context.putImageData( image, 0, 0 );
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return canvas;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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const timer = 0.0001 * Date.now();
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camera.position.x = Math.cos( timer ) * 1000;
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camera.position.z = Math.sin( timer ) * 1000;
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camera.lookAt( scene.position );
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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.x += 0.01;
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object.rotation.y += 0.005;
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}
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materials[ materials.length - 2 ].emissive.setHSL( 0.54, 1, 0.35 * ( 0.5 + 0.5 * Math.sin( 35 * timer ) ) );
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materials[ materials.length - 3 ].emissive.setHSL( 0.04, 1, 0.35 * ( 0.5 + 0.5 * Math.cos( 35 * timer ) ) );
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pointLight.position.x = Math.sin( timer * 7 ) * 300;
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pointLight.position.y = Math.cos( timer * 5 ) * 400;
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pointLight.position.z = Math.cos( timer * 3 ) * 300;
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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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