javascript
/
three.js
réplica de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js canvas - lines - 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" rel="noopener">three.js</a> - color lines
			[<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/geometries/hilbert3D.js"></script>
		<script src="js/geometries/hilbert2D.js"></script>

		<script>

			var mouseX = 0, mouseY = 0;

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

			var camera, scene, renderer;

			init();
			animate();

			function init() {

				camera = new THREE.PerspectiveCamera( 33, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 1000;

				scene = new THREE.Scene();

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

				// 2d lines

				var vertices = hilbert2D( new THREE.Vector3( 0, 0, 0 ), 400, 4 );
				var numVertices = vertices.length;

				var geometry2 = new THREE.BufferGeometry();

				var positions = new Float32Array( numVertices * 3 );
				var colors = new Float32Array( numVertices * 3 );

				geometry2.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
				geometry2.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );

				var color = new THREE.Color();

				for ( var i = 0, index = 0, l = numVertices; i < l; i ++, index += 3 ) {

					positions[ index ] = vertices[ i ].x;
					positions[ index + 1 ] = vertices[ i ].y;
					positions[ index + 2 ] = vertices[ i ].z;

					color.setHSL( i / l, 1.0, 0.5 );

					colors[ index ] = color.r;
					colors[ index + 1 ] = color.g;
					colors[ index + 2 ] = color.b;

				}

				// 3d lines

				var vertices = hilbert3D( new THREE.Vector3( 0, 0, 0 ), 200, 2, 0, 1, 2, 3, 4, 5, 6, 7 );
				var numVertices = vertices.length;

				var geometry3 = new THREE.BufferGeometry();

				var positions = new Float32Array( numVertices * 3 );
				var colors = new Float32Array( numVertices * 3 );

				geometry3.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
				geometry3.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );

				var color = new THREE.Color();

				for ( var i = 0, index = 0, l = numVertices; i < l; i ++, index += 3 ) {

					positions[ index ] = vertices[ i ].x;
					positions[ index + 1 ] = vertices[ i ].y;
					positions[ index + 2 ] = vertices[ i ].z;

					color.setHSL( i / l, 1.0, 0.5 );

					colors[ index ] = color.r;
					colors[ index + 1 ] = color.g;
					colors[ index + 2 ] = color.b;

				}

				// lines

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

				var line3d = new THREE.Line( geometry3, material );
				line3d.scale.set( 0.4, 0.4, 0.4 );
				line3d.position.set( 200, 0, 0 );
				scene.add( line3d );

				var line2d = new THREE.Line( geometry2, material );
				line2d.scale.copy( line3d.scale );
				line2d.position.set( - 200, 0, 0 );
				scene.add( line2d );

				//

				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 );

			}

			//

			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();

			}

			function render() {

				camera.position.x += ( mouseX - camera.position.x ) * 0.05;
				camera.position.y += ( - mouseY + 200 - camera.position.y ) * 0.05;

				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.isLine ) {

						object.rotation.y = time * ( i % 2 ? 1 : - 1 );

					}

				}

				renderer.render( scene, camera );

			}

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