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webgl_materials.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl materials
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import Stats from 'three/addons/libs/stats.module.js';
let stats;
let camera, scene, renderer;
let pointLight;
const objects = [], materials = [];
init();
animate();
function init() {
const container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.set( 0, 200, 800 );
scene = new THREE.Scene();
// Grid
const helper = new THREE.GridHelper( 1000, 40, 0x303030, 0x303030 );
helper.position.y = - 75;
scene.add( helper );
// Materials
const texture = new THREE.Texture( generateTexture() );
texture.needsUpdate = true;
materials.push( new THREE.MeshLambertMaterial( { map: texture, transparent: true } ) );
materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd } ) );
materials.push( new THREE.MeshPhongMaterial( { color: 0xdddddd, specular: 0x009900, shininess: 30, flatShading: true } ) );
materials.push( new THREE.MeshNormalMaterial() );
materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, transparent: true, blending: THREE.AdditiveBlending } ) );
materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd } ) );
materials.push( new THREE.MeshPhongMaterial( { color: 0xdddddd, specular: 0x009900, shininess: 30, map: texture, transparent: true } ) );
materials.push( new THREE.MeshNormalMaterial( { flatShading: true } ) );
materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, wireframe: true } ) );
materials.push( new THREE.MeshDepthMaterial() );
materials.push( new THREE.MeshLambertMaterial( { color: 0x666666, emissive: 0xff0000 } ) );
materials.push( new THREE.MeshPhongMaterial( { color: 0x000000, specular: 0x666666, emissive: 0xff0000, shininess: 10, opacity: 0.9, transparent: true } ) );
materials.push( new THREE.MeshBasicMaterial( { map: texture, transparent: true } ) );
// Spheres geometry
const geometry = new THREE.SphereGeometry( 70, 32, 16 );
for ( let i = 0, l = materials.length; i < l; i ++ ) {
addMesh( geometry, materials[ i ] );
}
// Lights
scene.add( new THREE.AmbientLight( 0x111111 ) );
const directionalLight = new THREE.DirectionalLight( 0xffffff, 0.125 );
directionalLight.position.x = Math.random() - 0.5;
directionalLight.position.y = Math.random() - 0.5;
directionalLight.position.z = Math.random() - 0.5;
directionalLight.position.normalize();
scene.add( directionalLight );
pointLight = new THREE.PointLight( 0xffffff, 1 );
scene.add( pointLight );
pointLight.add( new THREE.Mesh( new THREE.SphereGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) ) );
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
//
stats = new Stats();
container.appendChild( stats.dom );
//
window.addEventListener( 'resize', onWindowResize );
}
function addMesh( geometry, material ) {
const mesh = new THREE.Mesh( geometry, material );
mesh.position.x = ( objects.length % 4 ) * 200 - 400;
mesh.position.z = Math.floor( objects.length / 4 ) * 200 - 200;
mesh.rotation.x = Math.random() * 200 - 100;
mesh.rotation.y = Math.random() * 200 - 100;
mesh.rotation.z = Math.random() * 200 - 100;
objects.push( mesh );
scene.add( mesh );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function generateTexture() {
const canvas = document.createElement( 'canvas' );
canvas.width = 256;
canvas.height = 256;
const context = canvas.getContext( '2d' );
const image = context.getImageData( 0, 0, 256, 256 );
let x = 0, y = 0;
for ( let i = 0, j = 0, l = image.data.length; i < l; i += 4, j ++ ) {
x = j % 256;
y = ( x === 0 ) ? y + 1 : y;
image.data[ i ] = 255;
image.data[ i + 1 ] = 255;
image.data[ i + 2 ] = 255;
image.data[ i + 3 ] = Math.floor( x ^ y );
}
context.putImageData( image, 0, 0 );
return canvas;
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
const timer = 0.0001 * Date.now();
camera.position.x = Math.cos( timer ) * 1000;
camera.position.z = Math.sin( timer ) * 1000;
camera.lookAt( scene.position );
for ( let i = 0, l = objects.length; i < l; i ++ ) {
const object = objects[ i ];
object.rotation.x += 0.01;
object.rotation.y += 0.005;
}
materials[ materials.length - 2 ].emissive.setHSL( 0.54, 1, 0.35 * ( 0.5 + 0.5 * Math.sin( 35 * timer ) ) );
materials[ materials.length - 3 ].emissive.setHSL( 0.04, 1, 0.35 * ( 0.5 + 0.5 * Math.cos( 35 * timer ) ) );
pointLight.position.x = Math.sin( timer * 7 ) * 300;
pointLight.position.y = Math.cos( timer * 5 ) * 400;
pointLight.position.z = Math.cos( timer * 3 ) * 300;
renderer.render( scene, camera );
}
</script>
</body>
</html>