examples/canvas_lines_colors_2d.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - lines - cubes - colors</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;
			}

			a {
				color:#0078ff;
			}

			#info {
				position: absolute;
				top: 10px; width: 100%;
				color: #ffffff;
				padding: 5px;
				font-family: Monospace;
				font-size: 13px;
				text-align: center;
				z-index:100;
			}

			a {
				color: orange;
				text-decoration: none;
			}

			a:hover {
				color: #0080ff;
			}

		</style>
	</head>
	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank">three.js</a> - color lines WebGL demo
			[<a href="http://en.wikipedia.org/wiki/Hilbert_curve">Hilbert curve</a> thanks to <a href="http://www.openprocessing.org/visuals/?visualID=15599">Thomas Diewald</a>]
		</div>

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

		<script src="js/renderers/Projector.js"></script>
		<script src="js/renderers/CanvasRenderer.js"></script>

		<script src="js/Detector.js"></script>
		<script src="js/libs/stats.min.js"></script>
		<script src="js/geometries/hilbert2D.js"></script>

		<script>

			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();


			var mouseX = 0, mouseY = 0,

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

			camera, scene, renderer, material;

			init();
			animate();

			function init() {

				var i, container;

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

				camera = new THREE.PerspectiveCamera( 33, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 700;

				scene = new THREE.Scene();

				renderer = new THREE.CanvasRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				var geometry3 = new THREE.Geometry(),
					points = hilbert2D( new THREE.Vector3( 0,0,0 ), 400.0, 4 ),
					colors3 = [];

				for ( i = 0; i < points.length; i ++ ) {

					geometry3.vertices.push( points[ i ] );

					colors3[ i ] = new THREE.Color( 0xffffff );
					colors3[ i ].setHSL( i / points.length, 1.0, 0.5 );

				}

				geometry3.colors = colors3;

				// lines

				material = new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 1, linewidth: 3, vertexColors: THREE.VertexColors } );

				var line, p, scale = 0.3, d = 225;

				line = new THREE.Line(geometry3, material );
				line.scale.x = line.scale.y = line.scale.z =  scale*1.5;
				line.position.x = 0;
				line.position.y = 0;
				line.position.z = 0;
				scene.add( line );

				//

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

				//

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'touchstart', onDocumentTouchStart, false );
				document.addEventListener( 'touchmove', onDocumentTouchMove, false );

				//

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

			}

			function onWindowResize() {

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

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

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

				composer.reset();

			}

			function onDocumentMouseMove( event ) {

				mouseX = event.clientX - windowHalfX;
				mouseY = event.clientY - windowHalfY;

			}

			function onDocumentTouchStart( event ) {

				if ( event.touches.length > 1 ) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					mouseY = event.touches[ 0 ].pageY - windowHalfY;

				}

			}

			function onDocumentTouchMove( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					mouseY = event.touches[ 0 ].pageY - windowHalfY;
				}

			}

			//

			function animate() {

				requestAnimationFrame( animate );
				render();

				stats.update();

			}

			function render() {

				camera.position.x += ( mouseX - camera.position.x ) * .05;
				camera.position.y += ( - mouseY + 200 - camera.position.y ) * .05;

				camera.lookAt( scene.position );

				var time = Date.now() * 0.0005;

				for ( var i = 0; i < scene.children.length; i ++ ) {

					var object = scene.children[ i ];
					if ( object instanceof THREE.Line ) object.rotation.y = time * ( i % 2 ? 1 : -1 );

				}

				renderer.render(scene, camera );

			}

		</script>
	</body>
</html>