<!DOCTYPE HTML>
<html>
<head>
<title>proton.js-zone-ImageZone-emitter</title>
<meta name="viewport" id="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta charset="utf-8">
<style type="text/css">
body {
background-color: #333333;
margin: 0px;
overflow: hidden;
}
#container {
width:100%;
height:100%;
}
#testCanvas {
background: #000;
}
</style>
</head>
<body>
<div id="container">
<canvas id="testCanvas"></canvas>
</div>
<script src="../../lib/requestAnimationFrame.min.js"></script>
<script src="../../lib/stats.min.js"></script>
<script src="//localhost:3001/build/proton.web.js"></script>
<script>
var canvas;
var context;
var proton;
var renderer;
var emitter;
var stats;
var index;
var randomBehaviour;
var gravity;
main();
function main() {
canvas = document.getElementById("testCanvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
context = canvas.getContext('2d');
context.globalCompositeOperation = "lighter";
addStats();
loadImage();
}
function addStats() {
stats = new Stats();
stats.setMode(2);
stats.domElement.style.position = 'absolute';
stats.domElement.style.left = '0px';
stats.domElement.style.top = '0px';
document.getElementById('container').appendChild(stats.domElement);
}
function loadImage() {
var image = new Image()
image.onload = function(e) {
var rect = new Proton.Rectangle((canvas.width - e.target.width) / 2, (canvas.height - e.target.height) / 2, e.target.width, e.target.height);
context.drawImage(e.target, rect.x, rect.y);
createProton(rect);
tick();
}
image.src = 'image/logo.png';
}
function createProton(rect) {
proton = new Proton;
emitter = new Proton.Emitter();
emitter.rate = new Proton.Rate(new Proton.Span(11, 15), new Proton.Span(.04));
emitter.addInitialize(new Proton.Position(new Proton.PointZone(0, 0)));
emitter.addInitialize(new Proton.Mass(1));
emitter.addInitialize(new Proton.Radius(8, 13));
emitter.addInitialize(new Proton.Life(2));
var imagedata = context.getImageData(rect.x, rect.y, rect.width, rect.height);
emitter.addInitialize(new Proton.P(new Proton.ImageZone(imagedata, rect.x, rect.y + 50)));
randomBehaviour = new Proton.RandomDrift(2, 2, .2);
gravity = new Proton.Gravity(0);
emitter.addBehaviour(customScaleBehaviour());
emitter.addBehaviour(gravity);
emitter.addBehaviour(randomBehaviour);
emitter.addBehaviour(new Proton.Color(['#00aeff', '#0fa954', '#54396e', '#e61d5f']));
emitter.addBehaviour(new Proton.CrossZone(new Proton.RectZone(0, 0, canvas.width, canvas.height), 'collision'));
emitter.emit();
proton.addEmitter(emitter);
renderer = new Proton.CanvasRenderer(canvas);
proton.addRenderer(renderer);
index = 0;
window.addEventListener('mousedown', function(e) {
index++;
if (index % 3 == 1) {
randomBehaviour.reset(2, 0, .2);
gravity.reset(1.5);
} else if (index % 3 == 2) {
randomBehaviour.reset(50, 50, .1);
gravity.reset(0);
} else {
randomBehaviour.reset(2, 2, .2);
gravity.reset(0);
}
});
}
function customScaleBehaviour() {
return {
initialize: function(particle) {
particle.oldRadius = particle.radius;
particle.scale = 0;
},
applyBehaviour: function(particle) {
if (particle.energy >= 2 / 3) {
particle.scale = (1 - particle.energy) * 3;
} else if (particle.energy <= 1 / 3) {
particle.scale = particle.energy * 3;
}
particle.radius = particle.oldRadius * particle.scale;
}
}
}
function tick() {
requestAnimationFrame(tick);
stats.begin();
proton.update();
proton.stats.update(2, document.body);
stats.end();
}
</script>
</body>
</html>