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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">
<style>
body {
font-family: Monospace;
background-color: #000;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="../build/three.min.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera, scene, renderer, objects;
var particleLight, pointLight;
var materials = [];
init();
animate();
function init() {
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
var line_material = new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 0.2 } ),
geometry = new THREE.Geometry(),
floor = -75, step = 25;
for ( var i = 0; i <= 40; i ++ ) {
geometry.vertices.push( new THREE.Vector3( - 500, floor, i * step - 500 ) );
geometry.vertices.push( new THREE.Vector3( 500, floor, i * step - 500 ) );
geometry.vertices.push( new THREE.Vector3( i * step - 500, floor, -500 ) );
geometry.vertices.push( new THREE.Vector3( i * step - 500, floor, 500 ) );
}
var line = new THREE.Line( geometry, line_material, THREE.LinePieces );
scene.add( line );
// Materials
var texture = new THREE.Texture( generateTexture() );
texture.needsUpdate = true;
materials.push( new THREE.MeshLambertMaterial( { map: texture, transparent: true } ) );
materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd, shading: THREE.FlatShading } ) );
materials.push( new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0xdddddd, specular: 0x009900, shininess: 30, shading: THREE.FlatShading } ) );
materials.push( new THREE.MeshNormalMaterial( ) );
materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, transparent: true, blending: THREE.AdditiveBlending } ) );
//materials.push( new THREE.MeshBasicMaterial( { color: 0xff0000, blending: THREE.SubtractiveBlending } ) );
materials.push( new THREE.MeshLambertMaterial( { color: 0xdddddd, shading: THREE.SmoothShading } ) );
materials.push( new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0xdddddd, specular: 0x009900, shininess: 30, shading: THREE.SmoothShading, map: texture, transparent: true } ) );
materials.push( new THREE.MeshNormalMaterial( { shading: THREE.SmoothShading } ) );
materials.push( new THREE.MeshBasicMaterial( { color: 0xffaa00, wireframe: true } ) );
materials.push( new THREE.MeshDepthMaterial() );
materials.push( new THREE.MeshLambertMaterial( { color: 0x666666, emissive: 0xff0000, ambient: 0x000000, shading: THREE.SmoothShading } ) );
materials.push( new THREE.MeshPhongMaterial( { color: 0x000000, specular: 0x666666, emissive: 0xff0000, ambient: 0x000000, shininess: 10, shading: THREE.SmoothShading, opacity: 0.9, transparent: true } ) );
materials.push( new THREE.MeshBasicMaterial( { map: texture, transparent: true } ) );
// Spheres geometry
var geometry_smooth = new THREE.SphereGeometry( 70, 32, 16 );
var geometry_flat = new THREE.SphereGeometry( 70, 32, 16 );
var geometry_pieces = new THREE.SphereGeometry( 70, 32, 16 ); // Extra geometry to be broken down for MeshFaceMaterial
for ( var i = 0, l = geometry_pieces.faces.length; i < l; i ++ ) {
var face = geometry_pieces.faces[ i ];
if ( Math.random() > 0.7 ) {
face.materialIndex = Math.floor( Math.random() * materials.length );
} else {
face.materialIndex = 0;
}
}
geometry_pieces.materials = materials;
materials.push( new THREE.MeshFaceMaterial() );
objects = [];
var sphere, geometry, material;
for ( var i = 0, l = materials.length; i < l; i ++ ) {
material = materials[ i ];
geometry = material instanceof THREE.MeshFaceMaterial ? geometry_pieces :
( material.shading == THREE.FlatShading ? geometry_flat : geometry_smooth );
sphere = new THREE.Mesh( geometry, material );
sphere.position.x = ( i % 4 ) * 200 - 400;
sphere.position.z = Math.floor( i / 4 ) * 200 - 200;
sphere.rotation.x = Math.random() * 200 - 100;
sphere.rotation.y = Math.random() * 200 - 100;
sphere.rotation.z = Math.random() * 200 - 100;
objects.push( sphere );
scene.add( sphere );
}
particleLight = new THREE.Mesh( new THREE.SphereGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) );
scene.add( particleLight );
// Lights
scene.add( new THREE.AmbientLight( 0x111111 ) );
var directionalLight = new THREE.DirectionalLight( /*Math.random() * */ 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 );
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
//
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild( stats.domElement );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function generateTexture() {
var canvas = document.createElement( 'canvas' );
canvas.width = 256;
canvas.height = 256;
var context = canvas.getContext( '2d' );
var image = context.getImageData( 0, 0, 256, 256 );
var x = 0, y = 0;
for ( var 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() {
var timer = 0.0001 * Date.now();
camera.position.x = Math.cos( timer ) * 1000;
camera.position.z = Math.sin( timer ) * 1000;
camera.lookAt( scene.position );
for ( var i = 0, l = objects.length; i < l; i ++ ) {
var object = objects[ i ];
object.rotation.x += 0.01;
object.rotation.y += 0.005;
}
materials[ materials.length - 3 ].emissive.setHSV( 0.54, 1, 0.7 * ( 0.5 + 0.5 * Math.sin( 35 * timer ) ) );
materials[ materials.length - 4 ].emissive.setHSV( 0.04, 1, 0.7 * ( 0.5 + 0.5 * Math.cos( 35 * timer ) ) );
particleLight.position.x = Math.sin( timer * 7 ) * 300;
particleLight.position.y = Math.cos( timer * 5 ) * 400;
particleLight.position.z = Math.cos( timer * 3 ) * 300;
pointLight.position.x = particleLight.position.x;
pointLight.position.y = particleLight.position.y;
pointLight.position.z = particleLight.position.z;
renderer.render( scene, camera );
}
</script>
</body>
</html>