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webgl_layers.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - layers</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: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 0; /* to not conflict with dat.gui */
display:block;
}
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl layers
</div>
<script src="../build/three.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src='js/libs/dat.gui.min.js'></script>
<script>
var container, stats;
var camera, scene, renderer;
var radius = 100, theta = 0;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
camera.layers.enable( 0 ); // enabled by default
camera.layers.enable( 1 );
camera.layers.enable( 2 );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xf0f0f0 );
var light = new THREE.PointLight( 0xffffff, 1 );
light.layers.enable( 0 );
light.layers.enable( 1 );
light.layers.enable( 2 );
scene.add( camera );
camera.add( light );
var colors = [ 0xff0000, 0x00ff00, 0x0000ff ];
var geometry = new THREE.BoxBufferGeometry( 20, 20, 20 );
var layer;
for ( var i = 0; i < 300; i ++ ) {
layer = ( i % 3 );
var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: colors[ layer ] } ) );
object.position.x = Math.random() * 800 - 400;
object.position.y = Math.random() * 800 - 400;
object.position.z = Math.random() * 800 - 400;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.x = Math.random() + 0.5;
object.scale.y = Math.random() + 0.5;
object.scale.z = Math.random() + 0.5;
object.layers.set( layer );
scene.add( object );
}
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
var layers = { red: true, green: true, blue: true };
//
// Init gui
var gui = new dat.GUI();
gui.add( layers, 'red' ).onChange( function () {
camera.layers.toggle( 0 );
} );
gui.add( layers, 'green' ).onChange( function () {
camera.layers.toggle( 1 );
} );
gui.add( layers, 'blue' ).onChange( function () {
camera.layers.toggle( 2 );
} );
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
theta += 0.1;
camera.position.x = radius * Math.sin( THREE.Math.degToRad( theta ) );
camera.position.y = radius * Math.sin( THREE.Math.degToRad( theta ) );
camera.position.z = radius * Math.cos( THREE.Math.degToRad( theta ) );
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
</script>
</body>
</html>