javascript
/
three.js
tükrözi: https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - particles - billboards - 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;
				font-family:Monospace;
				font-size:13px;
				text-align:center;
				font-weight: bold;
				text-align:center;
			}

			a {
				color:#0078ff;
			}

			#info {
				color:#fff;
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
				z-index:100;
			}

		</style>
	</head>
	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl particle billboards colors example
		</div>

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

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

		<script>

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

			var camera, scene, renderer, stats, material;
			var mouseX = 0, mouseY = 0;

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

			init();
			animate();

			function init() {

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 3000 );
				camera.position.z = 1400;

				scene = new THREE.Scene();
				scene.fog = new THREE.FogExp2( 0x000000, 0.0009 );

				var geometry = new THREE.BufferGeometry();
				var vertices = [];
				var colors = [];

				var sprite = new THREE.TextureLoader().load( 'textures/sprites/ball.png' );

				var color = new THREE.Color();

				for ( var i = 0; i < 5000; i ++ ) {

					var x = 2000 * Math.random() - 1000;
					var y = 2000 * Math.random() - 1000;
					var z = 2000 * Math.random() - 1000;

					color.setHSL( ( x + 1000 ) / 2000, 1, 0.5 );

					vertices.push( x, y, z );
					colors.push( color.r, color.g, color.b );

				}

				geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
				geometry.addAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );


				material = new THREE.PointsMaterial( { size: 85, map: sprite, vertexColors: THREE.VertexColors, alphaTest: 0.5, transparent: true } );
				material.color.setHSL( 1.0, 0.2, 0.7 );

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

				//

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

				//

				stats = new Stats();
				document.body.appendChild( stats.dom );

				//

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

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

			}


			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 onWindowResize( event ) {

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

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var time = Date.now() * 0.00005;

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

				camera.lookAt( scene.position );

				var h = ( 360 * ( 1.0 + time ) % 360 ) / 360;
				material.color.setHSL( h, 1.0, 0.6 );

				renderer.render( scene, camera );

			}

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