examples/webgl_effects_parallaxbarrier.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - effects - parallax barrier</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:#777;
				padding:0;
				margin:0;
				font-weight: bold;
				overflow:hidden;
			}

			#info {
				position: absolute;
				top: 0px; width: 100%;
				color: #ffffff;
				padding: 5px;
				font-family:Monospace;
				font-size:13px;
				text-align:center;
				z-index:1000;
			}

			a {
				color: #ffffff;
			}

			#webglmessage a { color:#da0 }
		</style>
	</head>

	<body>
		<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - effects - parallax barrier. skybox by <a href="http://ict.debevec.org/~debevec/" target="_blank" rel="noopener">Paul Debevec</a></div>

		<script src="../build/three.js"></script>

		<script src="js/effects/ParallaxBarrierEffect.js"></script>

		<script src="js/WebGL.js"></script>

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var container, camera, scene, renderer, effect;

			var spheres = [];

			var mouseX = 0;
			var mouseY = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

			document.addEventListener( 'mousemove', onDocumentMouseMove, false );

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.01, 100 );
				camera.position.z = 3;
				camera.focalLength = 3;

				var path = "textures/cube/pisa/";
				var format = '.png';
				var urls = [
					path + 'px' + format, path + 'nx' + format,
					path + 'py' + format, path + 'ny' + format,
					path + 'pz' + format, path + 'nz' + format
				];

				var textureCube = new THREE.CubeTextureLoader().load( urls );

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

				var geometry = new THREE.SphereBufferGeometry( 0.1, 32, 16 );
				var material = new THREE.MeshBasicMaterial( { color: 0xffffff, envMap: textureCube } );

				for ( var i = 0; i < 500; i ++ ) {

					var mesh = new THREE.Mesh( geometry, material );

					mesh.position.x = Math.random() * 10 - 5;
					mesh.position.y = Math.random() * 10 - 5;
					mesh.position.z = Math.random() * 10 - 5;

					mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 3 + 1;

					scene.add( mesh );

					spheres.push( mesh );

				}

				//

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				container.appendChild( renderer.domElement );

				var width = window.innerWidth || 2;
				var height = window.innerHeight || 2;

				effect = new THREE.ParallaxBarrierEffect( renderer );
				effect.setSize( width, height );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				effect.setSize( window.innerWidth, window.innerHeight );

			}

			function onDocumentMouseMove( event ) {

				mouseX = ( event.clientX - windowHalfX ) / 100;
				mouseY = ( event.clientY - windowHalfY ) / 100;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();

			}

			function render() {

				var timer = 0.0001 * Date.now();

				camera.position.x += ( mouseX - camera.position.x ) * .05;
				camera.position.y += ( - mouseY - camera.position.y ) * .05;

				camera.lookAt( scene.position );

				for ( var i = 0, il = spheres.length; i < il; i ++ ) {

					var sphere = spheres[ i ];

					sphere.position.x = 5 * Math.cos( timer + i );
					sphere.position.y = 5 * Math.sin( timer + i * 1.1 );

				}

				effect.render( scene, camera );

			}

		</script>

	</body>
</html>