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webgl_materials_shaders.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials - shaders [Phong, Lambert]</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 {
background:#000;
color:#fff;
padding:0;
margin:0;
overflow:hidden;
font-family:georgia;
text-align:center;
}
h1 { }
a { color:skyblue }
canvas { pointer-events:none; z-index:10; }
#d { text-align:center; margin:1em 0 -19.7em 0; z-index:0; position:relative; display:block }
.button { background:orange; color:#fff; padding:0.2em 0.5em; cursor:pointer }
.inactive { background:#999; color:#eee }
</style>
</head>
<body>
<div id="d">
<h1>Blinn-Phong / Lambert materials</h1>
<span id="rcanvas" class="button inactive">2d canvas renderer</span>
<span id="rwebgl" class="button">WebGL renderer</span>
<br/>
<p><a href="http://threejs.org">Three.js</a> example
<br/>
<p>Best viewed in Chrome 9 or Firefox 4 using WebGL renderer.
<p>Canvas renderer is very slow on anything other than Chrome.
<p>Blinn-Phong shader only works in WebGL, canvas has only diffuse materials.
</div>
<script src="../build/three.min.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var FLOOR = -250;
var container, stats;
var camera, scene, canvasRenderer, webglRenderer;
var mesh, zmesh, lightMesh, geometry;
var directionalLight, pointLight;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var render_canvas = 0, render_gl = 1;
var has_gl = 0;
var bcanvas = document.getElementById( "rcanvas" );
var bwebgl = document.getElementById( "rwebgl" );
init();
animate();
render_canvas = !has_gl;
bwebgl.style.display = has_gl ? "inline" : "none";
bcanvas.className = render_canvas ? "button" : "button inactive";
function addMesh( geometry, scale, x, y, z, rx, ry, rz, material ) {
mesh = new THREE.Mesh( geometry, material );
mesh.scale.set( scale, scale, scale );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry, rz );
scene.add( mesh );
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 100000 );
camera.position.z = 1000;
scene = new THREE.Scene();
// LIGHTS
var ambient = new THREE.AmbientLight( 0x101010 );
scene.add( ambient );
directionalLight = new THREE.DirectionalLight( 0xffffff );
directionalLight.position.set( 1, 1, 2 ).normalize();
scene.add( directionalLight );
pointLight = new THREE.PointLight( 0xffffff );
scene.add( pointLight );
// light representation
sphere = new THREE.SphereGeometry( 100, 16, 8 );
lightMesh = new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0xffaa00 } ) );
lightMesh.scale.set( 0.05, 0.05, 0.05 );
lightMesh.position = pointLight.position;
scene.add( lightMesh );
// material samples
sphere = new THREE.SphereGeometry( 100, 32, 32 );
var y1 = 0, y2 = - 200;
addMesh( sphere, 1, -600, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x050505, color: 0x000000, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, -600, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0x050505 } ) );
addMesh( sphere, 1, -400, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0xffffff, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, -400, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0xffffff } ) );
addMesh( sphere, 1, -200, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0xff5500, specular: 0x555555, shininess: 10 } ) );
addMesh( sphere, 1, -200, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0xff5500 } ) );
addMesh( sphere, 1, 0, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0xffaa00, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, 0, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0xffaa00 } ) );
addMesh( sphere, 1, 200, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0x55ff00, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, 200, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0x55ff00 } ) );
addMesh( sphere, 1, 400, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0x0055ff, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, 400, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0x0055ff } ) );
addMesh( sphere, 1, 600, y1, 0, 0,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0x5500ff, specular: 0x555555, shininess: 30 } ) );
addMesh( sphere, 1, 600, y2, 0, 0,0,0, new THREE.MeshLambertMaterial( { color: 0x5500ff } ) );
addToruses( new THREE.TorusGeometry( 100, 20, 32, 32 ) );
//
if ( render_gl ) {
try {
webglRenderer = new THREE.WebGLRenderer();
webglRenderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
webglRenderer.domElement.style.position = "relative";
container.appendChild( webglRenderer.domElement );
has_gl = 1;
} catch (e) {
}
}
canvasRenderer = new THREE.CanvasRenderer();
canvasRenderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
container.appendChild( canvasRenderer.domElement );
//
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
bcanvas.addEventListener("click", toggleCanvas, false);
bwebgl.addEventListener("click", toggleWebGL, false);
document.addEventListener('mousemove', onDocumentMouseMove, false);
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
if ( webglRenderer ) webglRenderer.setSize( window.innerWidth, window.innerHeight );
if ( canvasRenderer ) canvasRenderer.setSize( window.innerWidth, window.innerHeight );
}
function addToruses( geometry ) {
var s = 0.85, t = s + 100, y = 200, rx = 0;
addMesh( geometry, s, -6*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x000000, color: 0x000000, specular: 0x333333, shininess: 10 } ) );
addMesh( geometry, s, -4*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x888888, specular: 0x333333, shininess: 10 } ) );
addMesh( geometry, s, -2*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x030303, specular: 0xff5500, shininess: 10 } ) );
addMesh( geometry, s, 0, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x030303, specular: 0xffaa00, shininess: 10 } ) );
addMesh( geometry, s, 2*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x030303, specular: 0x55ff00, shininess: 10 } ) );
addMesh( geometry, s, 4*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x030303, specular: 0x0055ff, shininess: 10 } ) );
addMesh( geometry, s, 6*t, y, 0, rx,0,0, new THREE.MeshPhongMaterial( { ambient: 0x030303, color: 0x030303, specular: 0x5500ff, shininess: 10 } ) );
}
function onDocumentMouseMove(event) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
var timer = -0.0002 * Date.now();
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
lightMesh.position.x = 700 * Math.cos( timer );
lightMesh.position.z = 700 * Math.sin( timer );
if ( render_canvas ) canvasRenderer.render( scene, camera );
if ( render_gl && has_gl ) webglRenderer.render( scene, camera );
}
function toggleCanvas() {
render_canvas = !render_canvas;
bcanvas.className = render_canvas ? "button" : "button inactive";
render_gl = !render_canvas;
bwebgl.className = render_gl ? "button" : "button inactive";
if( has_gl )
webglRenderer.domElement.style.display = render_gl ? "block" : "none";
canvasRenderer.domElement.style.display = render_canvas ? "block" : "none";
}
function toggleWebGL() {
render_gl = !render_gl;
bwebgl.className = render_gl ? "button" : "button inactive";
render_canvas = !render_gl;
bcanvas.className = render_canvas ? "button" : "button inactive";
if( has_gl )
webglRenderer.domElement.style.display = render_gl ? "block" : "none";
canvasRenderer.domElement.style.display = render_canvas ? "block" : "none";
}
</script>
</body>
</html>