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DynamicCubeReflection.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials - dynamic cube reflection</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-color: #000000;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
color: #ffffff;
padding: 5px;
font-family:Monospace;
font-size:13px;
font-weight: bold;
text-align:center;
}
a {
color: #ffffff;
}
</style>
</head>
<body>
<div id="info"><a href="http://threejs.org" target="_blank">three.js webgl</a> - materials - dynamic cube reflection<br/>Photo by <a href="http://www.flickr.com/photos/jonragnarsson/2294472375/" target="_blank">Jón Ragnarsson</a>.</div>
<script src="lib/three.min.js"></script>
<script>
var camera, cubeCamera, scene, renderer;
var cube, sphere, torus;
var fov = 70,
isUserInteracting = false,
onMouseDownMouseX = 0, onMouseDownMouseY = 0,
lon = 0, onMouseDownLon = 0,
lat = 0, onMouseDownLat = 0,
phi = 0, theta = 0;
var texture = THREE.ImageUtils.loadTexture( 'room.jpg', new THREE.UVMapping(), function () {
init();
animate();
} );
function init() {
camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 1000 );
scene = new THREE.Scene();
var mesh = new THREE.Mesh( new THREE.SphereGeometry( 500, 60, 40 ), new THREE.MeshBasicMaterial( { map: texture } ) );
mesh.scale.x = -1;
scene.add( mesh );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
cubeCamera = new THREE.CubeCamera( 1, 1000, 256 );
cubeCamera.renderTarget.minFilter = THREE.LinearMipMapLinearFilter;
scene.add( cubeCamera );
document.body.appendChild( renderer.domElement );
//
var material = new THREE.MeshBasicMaterial( { envMap: cubeCamera.renderTarget } );
sphere = new THREE.Mesh( new THREE.SphereGeometry( 20, 30, 15 ), material );
scene.add( sphere );
cube = new THREE.Mesh( new THREE.CubeGeometry( 20, 20, 20 ), material );
scene.add( cube );
torus = new THREE.Mesh( new THREE.TorusKnotGeometry( 20, 5, 100, 25 ), material );
scene.add( torus );
//
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'mousewheel', onDocumentMouseWheel, false );
document.addEventListener( 'DOMMouseScroll', onDocumentMouseWheel, false);
window.addEventListener( 'resize', onWindowResized, false );
onWindowResized( null );
}
function onWindowResized( event ) {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.projectionMatrix.makePerspective( fov, window.innerWidth / window.innerHeight, 1, 1100 );
}
function onDocumentMouseDown( event ) {
event.preventDefault();
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
}
function onDocumentMouseMove( event ) {
lon = ( event.clientX - onPointerDownPointerX ) * 0.1 + onPointerDownLon;
lat = ( event.clientY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;
}
function onDocumentMouseUp( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
}
function onDocumentMouseWheel( event ) {
// WebKit
if ( event.wheelDeltaY ) {
fov -= event.wheelDeltaY * 0.05;
// Opera / Explorer 9
} else if ( event.wheelDelta ) {
fov -= event.wheelDelta * 0.05;
// Firefox
} else if ( event.detail ) {
fov += event.detail * 1.0;
}
camera.projectionMatrix.makePerspective( fov, window.innerWidth / window.innerHeight, 1, 1100 );
}
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
var time = Date.now();
lon += .15;
lat = Math.max( - 85, Math.min( 85, lat ) );
phi = THREE.Math.degToRad( 90 - lat );
theta = THREE.Math.degToRad( lon );
sphere.position.x = Math.sin( time * 0.001 ) * 30;
sphere.position.y = Math.sin( time * 0.0011 ) * 30;
sphere.position.z = Math.sin( time * 0.0012 ) * 30;
sphere.rotation.x += 0.02;
sphere.rotation.y += 0.03;
cube.position.x = Math.sin( time * 0.001 + 2 ) * 30;
cube.position.y = Math.sin( time * 0.0011 + 2 ) * 30;
cube.position.z = Math.sin( time * 0.0012 + 2 ) * 30;
cube.rotation.x += 0.02;
cube.rotation.y += 0.03;
torus.position.x = Math.sin( time * 0.001 + 4 ) * 30;
torus.position.y = Math.sin( time * 0.0011 + 4 ) * 30;
torus.position.z = Math.sin( time * 0.0012 + 4 ) * 30;
torus.rotation.x += 0.02;
torus.rotation.y += 0.03;
camera.position.x = 100 * Math.sin( phi ) * Math.cos( theta );
camera.position.y = 100 * Math.cos( phi );
camera.position.z = 100 * Math.sin( phi ) * Math.sin( theta );
camera.lookAt( scene.position );
sphere.visible = false; // *cough*
cubeCamera.updateCubeMap( renderer, scene );
sphere.visible = true; // *cough*
renderer.render( scene, camera );
}
</script>
</body>
</html>