JavaScript
<!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>
<!-- connect the library three.js -->
<script src="https://dir.by/example_lib/tree_js/three.js"></script>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl layers
</div>
<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 );
}
raycaster = new THREE.Raycaster();
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild(renderer.domElement);
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();
}
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>
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