sparksjs
Version:
Sparks library for three.js with theen.js
192 lines (125 loc) • 5.14 kB
HTML
<html lang="en">
<head>
<title>Sparks.js - three.js canvas particles - random shading programs</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
<style type="text/css">
body {
background-color: #000000;
margin: 0px;
overflow: hidden;
}
a {
color:#0078ff;
}
</style>
</head>
<body>
<!--
<script type="text/javascript" src="http://mrdoob.github.com/three.js/build/Three.js"></script>
<script type="text/javascript" src="http://mrdoob.github.com/three.js/examples/js/RequestAnimationFrame.js"></script>
<script type="text/javascript" src="http://mrdoob.github.com/three.js/examples/js/Stats.js"></script>
<script type="text/javascript" src="http://sole.github.com/tween.js/src/Tween.js"></script>
<script type="text/javascript" src="https://raw.github.com/zz85/sparks.js/master/Sparks.js"></script>
-->
<script type="text/javascript" src="js/Three.js"></script>
<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
<script type="text/javascript" src="js/Stats.js"></script>
<script type="text/javascript" src="js/Tween.js"></script>
<script type="text/javascript" src="../Sparks.js"></script>
<script type="text/javascript" src="CanvasShaders.js"></script>
<script type="text/javascript">
// Inspired from http://wonderfl.net/c/qTwn and mr doob three.js examples
var container, stats;
var camera, scene, renderer, group, particle;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var lasttime = Date.now(), elapsed;
init();
animate();
var sparksEmitter;
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.Camera( 75, window.innerWidth / window.innerHeight, 1, 3000 );
camera.position.z = 200; //1000
scene = new THREE.Scene();
group = new THREE.Object3D();
scene.add( group );
renderer = new THREE.CanvasRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild( stats.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
//// EMITTER STUFF
var h = 0;
var k = 0.7;
var callback = function() {
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(h, 1, 0.3); //0.7
h += 0.001;
if (h>1) h-=1;
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 1 + Math.random()*3;
group.add( particle );
return particle;
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(70));
sparksEmitter.addInitializer(new SPARKS.Position( new SPARKS.PointZone( new THREE.Vector3(0,0,0) ) ) );
sparksEmitter.addInitializer(new SPARKS.Lifetime(0,3));
sparksEmitter.addInitializer(new SPARKS.Target(null, callback));
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(0,100,00))));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addAction(new SPARKS.RandomDrift(2*500,500,2*500));
sparksEmitter.addAction(new SPARKS.Accelerate(0,-40,0));
sparksEmitter.addCallback("created", function(particle) {
particle.target.position = particle.position;
});
sparksEmitter.addCallback("dead", function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
});
sparksEmitter.start();
}
//
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();
}
var _rotation = 0;
function render() {
camera.position.x += ( mouseX - camera.position.x ) * 0.05;
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
renderer.render( scene, camera );
}
</script>
</body>
</html>