javascript
/
three.js
spogulis no https://github.com/tazdij/three.js.git


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131
							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - trails</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:#000;
				padding:0;
				margin:0;
				font-weight: bold;
				overflow:hidden;
			}
		</style>
	</head>
	<body>

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

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

		<script>

			var container, stats;

			var camera, scene, renderer;

			var mouseX = 0, mouseY = 0;

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

			init();
			animate();

			function init() {

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

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.set( 0, 0, 1000 );

				scene = new THREE.Scene();

				var colorArray = [ new THREE.Color( 0xff0080 ), new THREE.Color( 0xffffff ), new THREE.Color( 0x8000ff ) ];
				var positions = [];
				var colors = [];

				for ( var i = 0; i < 100; i ++ ) {

					positions.push( 4000 * ( Math.random() - 0.5 ), 4000 * ( Math.random() - 0.5 ), 4000 * ( Math.random() - 0.5 ) );

					var clr = colorArray[ Math.floor( Math.random() * colorArray.length ) ];

					colors.push( clr.r, clr.g, clr.b );

				}

				var geometry = new THREE.BufferGeometry();
				geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
				geometry.addAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );

				var material = new THREE.PointsMaterial( { size: 4, vertexColors: THREE.VertexColors, depthTest: false, sizeAttenuation: false } );

				var mesh = new THREE.Points( geometry, material );
				scene.add( mesh );

				renderer = new THREE.WebGLRenderer( { preserveDrawingBuffer: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.autoClearColor = false;
				container.appendChild( renderer.domElement );

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

				//

				document.addEventListener( 'mousemove', onDocumentMouseMove, 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 ) * 10;
				mouseY = ( event.clientY - windowHalfY ) * 10;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

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

				camera.lookAt( scene.position );

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>