sparksjs
Version:
Sparks library for three.js with theen.js
434 lines (290 loc) • 12.4 kB
HTML
<html lang="en">
<head>
<title>Sparks.js - three.js canvas particles - simple test sandbox</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;
}
#code {
display:block;
position:absolute;
float: left;
z-index: 5;
width: 80%;
height: 100%;
margin: auto;
color: #ffffff;
font-family: Monospace;
font-size: 13px;
padding: 8px 12px 8px 12px;
border: none;
border-radius: 5px;
margin-right: 5px;
overflow: auto;
opacity: 1;
white-space: pre;
}
.codeblocks {
display:none;
}
</style>
</head>
<body>
<pre id="moveExample" class="codeblocks">
var onParticleCreated = function(p) {
// create a three.js particle
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(Math.random() * 0.5 + 0.2, 1, 0.2);
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 4;
group.add( particle );
// assign three.js particle to sparks.js position
particle.position = p.position;
// assign sparks.js target particle to three.js particle
p.target = particle;
};
var onParticleDead = function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(100));
sparksEmitter.addInitializer(new SPARKS.Position( new SPARKS.PointZone( new THREE.Vector3(0,0,0) ) ) );
sparksEmitter.addInitializer(new SPARKS.Lifetime(3,3));
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(0,0,100))));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addCallback("created", onParticleCreated);
sparksEmitter.addCallback("dead", onParticleDead);
sparksEmitter.start();
</pre>
<pre id="cubeZoneExample" class="codeblocks">
var onParticleCreated = function(p) {
// create a three.js particle
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(Math.random() * 0.5 + 0.2, 1, 0.2);
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 4;
group.add( particle );
// assign three.js particle to sparks.js position
particle.position = p.position;
// assign sparks.js target particle to three.js particle
p.target = particle;
};
var onParticleDead = function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(200));
sparksEmitter.addInitializer(new SPARKS.Position( new SPARKS.CubeZone( new THREE.Vector3(0,0,0), 100, 100, 100 ) ) );
sparksEmitter.addInitializer(new SPARKS.Lifetime(3,3));
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(0,0,100))));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addCallback("created", onParticleCreated);
sparksEmitter.addCallback("dead", onParticleDead);
sparksEmitter.start();
</pre>
<code id="code" contentEditable="true" onkeyup="run()">
var onParticleCreated = function(p) {
// create a three.js particle
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(Math.random() * 0.5 + 0.2, 1, 0.2);
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 4;
group.add( particle );
// assign three.js particle to sparks.js position
particle.position = p.position;
// assign sparks.js target particle to three.js particle
p.target = particle;
};
var onParticleDead = function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(200));
sparksEmitter.addInitializer(new SPARKS.Position( new SPARKS.CubeZone( new THREE.Vector3(0,0,0), 100, 100, 100 ) ) );
sparksEmitter.addInitializer(new SPARKS.Lifetime(3,3));
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(0,0,100))));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addCallback("created", onParticleCreated);
sparksEmitter.addCallback("dead", onParticleDead);
sparksEmitter.start();
</code>
<!--
<div></div>
-->
<!--
<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">
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;
var codeElement = document.getElementById('code');
init();
animate();
var sparksEmitter;
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 3000 );
camera.position.z = 200; //1000
scene = new THREE.Scene();
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 );
displayExample(actionZone);
run();
}
function actionZone() {
var onParticleCreated = function(p) {
// create a three.js particle
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(Math.random() * 0.5 + 0.2, 1, 0.2);
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 4;
group.add( particle );
// assign three.js particle to sparks.js position
particle.position = p.position;
// assign sparks.js target particle to three.js particle
p.target = particle;
};
var onParticleDead = function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(200));
sparksEmitter.addInitializer(new SPARKS.Lifetime(3,3));
sparksEmitter.addInitializer(new SPARKS.Position(new SPARKS.CubeZone( new THREE.Vector3(0,0,0), 100, 100, 100 ) ) );
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(-10,0,0))));
sparksEmitter.addAction(new SPARKS.Accelerate(0, 0, 2));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addAction(new SPARKS.ActionZone(
//new SPARKS.RandomDrift(1000,1000,1000),
new SPARKS.Accelerate(0, 0, 1000),
new SPARKS.CubeZone( new THREE.Vector3(20,20,0), 30, 30, 100 ) ) );
sparksEmitter.addCallback("created", onParticleCreated);
sparksEmitter.addCallback("dead", onParticleDead);
sparksEmitter.start();
}
function deathZone() {
var onParticleCreated = function(p) {
// create a three.js particle
var material = new THREE.ParticleCanvasMaterial( { program: SPARKS.CanvasShadersUtils.circles, blending:THREE.AdditiveBlending } );
material.color.setHSV(Math.random() * 0.5 + 0.2, 1, 0.2);
particle = new THREE.Particle( material );
particle.scale.x = particle.scale.y = 4;
group.add( particle );
// assign three.js particle to sparks.js position
particle.position = p.position;
// assign sparks.js target particle to three.js particle
p.target = particle;
};
var onParticleDead = function(particle) {
particle.target.visible = false; // is this a work around?
group.remove(particle.target);
};
sparksEmitter = new SPARKS.Emitter(new SPARKS.SteadyCounter(300));
sparksEmitter.addInitializer(new SPARKS.Lifetime(3,3));
sparksEmitter.addInitializer(new SPARKS.Position( new SPARKS.CubeZone( new THREE.Vector3(0,0,0), 100, 100, 100 ) ) );
sparksEmitter.addInitializer(new SPARKS.Velocity(new SPARKS.PointZone(new THREE.Vector3(0,0,0))));
sparksEmitter.addAction(new SPARKS.Age());
sparksEmitter.addAction(new SPARKS.Move());
sparksEmitter.addAction(new SPARKS.DeathZone(
new SPARKS.CubeZone( new THREE.Vector3(20,20,0), 50, 50, 100 ) ) );
sparksEmitter.addCallback("created", onParticleCreated);
sparksEmitter.addCallback("dead", onParticleDead);
sparksEmitter.start();
}
function displayExample(example) {
var codes = example.toString();
var lines = codes.split('\n');
lines.pop();
lines.shift();
lines.forEach(function(a,b) {
lines[b] = a.replace(/\t\t/, '');
});
codeElement.innerHTML = lines.join('\n');
//console.log(lines.join('\n'));
}
function run() {
if (sparksEmitter) {
sparksEmitter.stop();
scene.remove(group);
sparksEmitter.update(2);
// release used vectors
}
group = new THREE.Object3D();
scene.add( group );
//var codegen = "var configureParticles2 = function() { " + code.innerText + "};");
var codegen = document.createElement('script');
codegen.innerHTML = codeElement.innerText;
document.body.appendChild(codegen);
//document.body.removeChild(codegen);
delete codegen;
}
//
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>
<script src="https://raw.github.com/cloudhead/hijs/master/hijs.js"></script>
</body>
</html>