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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgl - particles - waves</title>
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+ <meta charset="utf-8">
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+ <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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+ <style>
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+ body {
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+ background-color: #000;
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+ margin: 0px;
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+ overflow: hidden;
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+ font-family:Monospace;
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+ font-size:13px;
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+ text-align:center;
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+ font-weight: bold;
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+ text-align:center;
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+ }
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+
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+ a {
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+ color:#0078ff;
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+ }
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+
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+ #info {
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+ color:#fff;
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+ position: absolute;
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+ top: 0px;
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+ width: 100%;
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+ padding: 5px;
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+ }
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+ </style>
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+ </head>
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+ <body>
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+
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+ <div id="info">
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+ <a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl particles waves example
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+ </div>
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+
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+ <script src="../build/three.js"></script>
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+
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+ <script src="js/WebGL.js"></script>
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+ <script src="js/libs/stats.min.js"></script>
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+
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+ <script>
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+
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+ if ( WEBGL.isWebGLAvailable() === false ) {
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+
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+ document.body.appendChild( WEBGL.getWebGLErrorMessage() );
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+
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+ }
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+
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+ var SEPARATION = 100, AMOUNTX = 50, AMOUNTY = 50;
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+
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+ var container, stats;
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+ var camera, scene, renderer;
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+
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+ var particles, particle, count = 0;
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+
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+ var mouseX = 0, mouseY = 0;
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+
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+ var windowHalfX = window.innerWidth / 2;
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+ var windowHalfY = window.innerHeight / 2;
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+
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+ init();
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+ animate();
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+
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+ function init() {
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+
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+ container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
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+ camera.position.z = 1000;
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+
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+ scene = new THREE.Scene();
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+
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+ particles = new Array();
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+
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+ var material = new THREE.SpriteMaterial( {
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+
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+ map: new THREE.TextureLoader().load( 'textures/sprites/circle.png' ),
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+
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+ } );
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+
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+ var i = 0;
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+
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+ for ( var ix = 0; ix < AMOUNTX; ix ++ ) {
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+
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+ for ( var iy = 0; iy < AMOUNTY; iy ++ ) {
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+
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+ particle = particles[ i ++ ] = new THREE.Sprite( material );
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+ particle.position.x = ix * SEPARATION - ( ( AMOUNTX * SEPARATION ) / 2 );
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+ particle.position.z = iy * SEPARATION - ( ( AMOUNTY * SEPARATION ) / 2 );
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+ scene.add( particle );
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+
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+ }
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+
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+ }
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+
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+ renderer = new THREE.WebGLRenderer();
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ container.appendChild( renderer.domElement );
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+
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+ stats = new Stats();
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+ container.appendChild( stats.dom );
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+
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+ document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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+ document.addEventListener( 'touchstart', onDocumentTouchStart, false );
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+ document.addEventListener( 'touchmove', onDocumentTouchMove, false );
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+
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+ //
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+
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+ window.addEventListener( 'resize', onWindowResize, false );
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+
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+ }
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+
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+ function onWindowResize() {
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+
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+ windowHalfX = window.innerWidth / 2;
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+ windowHalfY = window.innerHeight / 2;
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ }
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+
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+ //
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+
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+ function onDocumentMouseMove( event ) {
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+
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+ mouseX = event.clientX - windowHalfX;
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+ mouseY = event.clientY - windowHalfY;
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+
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+ }
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+
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+ function onDocumentTouchStart( event ) {
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+
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+ if ( event.touches.length === 1 ) {
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+
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+ event.preventDefault();
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+
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+ mouseX = event.touches[ 0 ].pageX - windowHalfX;
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+ mouseY = event.touches[ 0 ].pageY - windowHalfY;
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+
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+ }
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+
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+ }
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+
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+ function onDocumentTouchMove( event ) {
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+
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+ if ( event.touches.length === 1 ) {
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+
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+ event.preventDefault();
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+
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+ mouseX = event.touches[ 0 ].pageX - windowHalfX;
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+ mouseY = event.touches[ 0 ].pageY - windowHalfY;
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+
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+ }
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+
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+ }
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+
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+ //
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+
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+ function animate() {
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+
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+ requestAnimationFrame( animate );
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+
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+ render();
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+ stats.update();
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+
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+ }
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+
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+ function render() {
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+
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+ camera.position.x += ( mouseX - camera.position.x ) * .05;
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+ camera.position.y += ( - mouseY - camera.position.y ) * .05;
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+ camera.lookAt( scene.position );
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+
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+ var i = 0;
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+
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+ for ( var ix = 0; ix < AMOUNTX; ix ++ ) {
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+
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+ for ( var iy = 0; iy < AMOUNTY; iy ++ ) {
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+
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+ particle = particles[ i ++ ];
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+ particle.position.y = ( Math.sin( ( ix + count ) * 0.3 ) * 50 ) +
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+ ( Math.sin( ( iy + count ) * 0.5 ) * 50 );
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+ particle.scale.x = particle.scale.y = ( Math.sin( ( ix + count ) * 0.3 ) + 1 ) * 4 +
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+ ( Math.sin( ( iy + count ) * 0.5 ) + 1 ) * 4;
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+
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+ }
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+
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+ }
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+
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+ renderer.render( scene, camera );
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+
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+ count += 0.1;
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+
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+ }
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+
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+ </script>
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+ </body>
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+</html>
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WestLangley