<!DOCTYPE html>
<html>
<head>
<title>proton.js-behaviour-Force</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 {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#canvas {
background: #000;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script src="../../lib/requestAnimationFrame.min.js"></script>
<script src="../../lib/stats.min.js"></script>
<script src="../../lib/profiler.js"></script>
<script src="../../lib/color.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 R = 10;
var tha = 0;
var _mousedown = false;
var index = 0;
var hcolor = 0;
var colorBehaviour;
var forceBehaviour, attractionBehaviour;
main();
function main() {
pf.count(120, "Color");
pf.delay(3600, "Color");
canvas = document.getElementById("canvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
context = canvas.getContext("2d");
addStats();
createProton();
tick();
canvas.addEventListener("mousedown", mousedownHandler, false);
canvas.addEventListener("mouseup", mouseupHandler, false);
canvas.addEventListener("mousemove", mousemoveHandler, false);
}
function addStats() {
stats = new Stats();
stats.setMode(2);
stats.domElement.style.position = "absolute";
stats.domElement.style.left = "0px";
stats.domElement.style.top = "0px";
document.body.appendChild(stats.domElement);
}
function createProton() {
proton = new Proton();
emitter = new Proton.Emitter();
emitter.rate = new Proton.Rate(
new Proton.Span(90, 110),
new Proton.Span(0.1, 0.3)
);
emitter.addInitialize(new Proton.Mass(1));
emitter.addInitialize(new Proton.Radius(3, 7));
emitter.addInitialize(new Proton.Life(2, 3));
emitter.addInitialize(
new Proton.Velocity(
new Proton.Span(1, 2),
new Proton.Span(0, 360),
"polar"
)
);
attractionBehaviour = new Proton.Attraction(
{
x: 1003 / 2,
y: 610 / 2
},
0,
200
);
forceBehaviour = new Proton.Force(0, 0);
emitter.addBehaviour(forceBehaviour, attractionBehaviour);
emitter.addBehaviour(
new Proton.CrossZone(
new Proton.RectZone(0, 0, canvas.width, canvas.height),
"dead"
)
);
emitter.addBehaviour(
new Proton.Scale(1, 3),
new Proton.Alpha(1, 0),
new Proton.Color("#3366b2", "#1155b2")
);
var color1 = Color.parse(
"hsl(" + (hcolor % 360) + ", 100%, 50%)"
).hexTriplet();
var color2 = Color.parse(
"hsl(" + ((hcolor + 150) % 360) + ", 100%, 50%)"
).hexTriplet();
colorBehaviour = new Proton.Color(color1, color2);
emitter.addBehaviour(colorBehaviour);
emitter.p.x = canvas.width / 2;
emitter.p.y = canvas.height / 2;
emitter.emit();
proton.addEmitter(emitter);
var renderer = new Proton.CanvasRenderer(canvas);
renderer.onProtonUpdate = function() {
context.fillStyle = "rgba(0, 0, 0, 0.1)";
context.fillRect(0, 0, canvas.width, canvas.height);
};
proton.addRenderer(renderer);
window.onresize = function(e) {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
emitter.p.x = canvas.width / 2;
emitter.p.y = canvas.height / 2;
};
}
function mousedownHandler(e) {
_mousedown = true;
}
function mousemoveHandler(e) {
if (_mousedown) {
var _x, _y;
if (e.layerX || e.layerX == 0) {
_x = e.layerX;
_y = e.layerY;
} else if (e.offsetX || e.offsetX == 0) {
_x = e.offsetX;
_y = e.offsetY;
}
attractionBehaviour.reset(
{
x: _x,
y: _y
},
10,
500
);
}
}
function mouseupHandler(e) {
_mousedown = false;
attractionBehaviour.reset(
{
x: 1003 / 2,
y: 610 / 2
},
0,
200
);
}
function resetColor() {
index++;
if (index % 10 == 0) {
hcolor++;
var color1 = Color.parse(
"hsl(" + (hcolor % 360) + ", 100%, 50%)"
).hexTriplet();
var color2 = Color.parse(
"hsl(" + ((hcolor + 50) % 360) + ", 100%, 50%)"
).hexTriplet();
colorBehaviour.reset(color1, color2);
index = 0;
}
}
function tick() {
requestAnimationFrame(tick);
stats.begin();
proton.update();
proton.stats.update(3);
resetColor();
tha += 0.1;
var x = Math.cos(tha) * R;
var y = Math.sin(tha) * R;
forceBehaviour.reset(x, y);
stats.end();
}
</script>
</body>
</html>