javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156
							<!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;
			}
		</style>
	</head>
	<body>

		<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 );

				var info = document.createElement( 'div' );
				info.style.position = 'absolute';
				info.style.top = '10px';
				info.style.width = '100%';
				info.style.textAlign = 'center';
				info.innerHTML = '<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - layers';
				container.appendChild( info );

				var bgTexture = new THREE.TextureLoader().load( 'textures/brick_diffuse.jpg' );
				var bgColor = new THREE.Color( 0xf0f0f0 );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.layers.enable( 0 );
				camera.layers.enable( 1 );
				camera.layers.enable( 2 );

				scene = new THREE.Scene();
				scene.background = bgColor;

				var light = new THREE.DirectionalLight( 0xffffff, 1 );
				light.position.set( 1, 1, 1 ).normalize();
				light.layers.enable( 0 );
				light.layers.enable( 1 );
				light.layers.enable( 2 );

				scene.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);

				stats = new Stats();
				container.appendChild( stats.dom );

				var layers = { red: true, green: true, blue: true, background: false };

				//
				// 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 ); } );

				gui.add( layers, 'background' ).onChange( function ( value ) { scene.background = value ? bgTexture : bgColor; } );

				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 );

				camera.updateMatrixWorld();

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>