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webgl_materials_cubemap_dynamic.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" rel="noopener">three.js webgl</a> - materials - dynamic cube reflection<br/>Photo by <a href="http://www.flickr.com/photos/jonragnarsson/2294472375/" target="_blank" rel="noopener">Jón Ragnarsson</a>.</div>
<script src="../build/three.js"></script>
<script src="js/loaders/EquirectangularToCubeGenerator.js"></script>
<script>
var camera, scene, renderer;
var cube, sphere, torus, material, backgroundMesh;
var count = 0, cubeCamera1, cubeCamera2;
var onPointerDownPointerX, onPointerDownPointerY, onPointerDownLon, onPointerDownLat;
var lon = 0, lat = 0;
var phi = 0, theta = 0;
var textureLoader = new THREE.TextureLoader();
textureLoader.load( 'textures/2294472375_24a3b8ef46_o.jpg', function ( texture ) {
texture.mapping = THREE.UVMapping;
init( texture );
animate();
} );
function init( texture ) {
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 1000 );
// background
var options = {
resolution: 1024,
generateMipmaps: true,
minFilter: THREE.LinearMipMapLinearFilter,
magFilter: THREE.LinearFilter
};
scene.background = new THREE.CubemapGenerator( renderer ).fromEquirectangular( texture, options );
//
cubeCamera1 = new THREE.CubeCamera( 1, 1000, 256 );
cubeCamera1.renderTarget.texture.generateMipmaps = true;
cubeCamera1.renderTarget.texture.minFilter = THREE.LinearMipMapLinearFilter;
scene.add( cubeCamera1 );
cubeCamera2 = new THREE.CubeCamera( 1, 1000, 256 );
cubeCamera2.renderTarget.texture.generateMipmaps = true;
cubeCamera2.renderTarget.texture.minFilter = THREE.LinearMipMapLinearFilter;
scene.add( cubeCamera2 );
document.body.appendChild( renderer.domElement );
//
material = new THREE.MeshBasicMaterial( {
envMap: cubeCamera2.renderTarget.texture
} );
sphere = new THREE.Mesh( new THREE.IcosahedronBufferGeometry( 20, 3 ), material );
scene.add( sphere );
cube = new THREE.Mesh( new THREE.BoxBufferGeometry( 20, 20, 20 ), material );
scene.add( cube );
torus = new THREE.Mesh( new THREE.TorusKnotBufferGeometry( 10, 5, 100, 25 ), material );
scene.add( torus );
//
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'wheel', onDocumentMouseWheel, false );
window.addEventListener( 'resize', onWindowResized, false );
}
function onWindowResized() {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
}
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() {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
}
function onDocumentMouseWheel( event ) {
var fov = camera.fov + event.deltaY * 0.05;
camera.fov = THREE.Math.clamp( fov, 10, 75 );
camera.updateProjectionMatrix();
}
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 );
cube.position.x = Math.cos( time * 0.001 ) * 30;
cube.position.y = Math.sin( time * 0.001 ) * 30;
cube.position.z = Math.sin( time * 0.001 ) * 30;
cube.rotation.x += 0.02;
cube.rotation.y += 0.03;
torus.position.x = Math.cos( time * 0.001 + 10 ) * 30;
torus.position.y = Math.sin( time * 0.001 + 10 ) * 30;
torus.position.z = Math.sin( time * 0.001 + 10 ) * 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;
// pingpong
if ( count % 2 === 0 ) {
material.envMap = cubeCamera1.renderTarget.texture;
cubeCamera2.update( renderer, scene );
} else {
material.envMap = cubeCamera2.renderTarget.texture;
cubeCamera1.update( renderer, scene );
}
count ++;
sphere.visible = true;
renderer.render( scene, camera );
}
</script>
</body>
</html>