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Play/Pause + small performance improvement #5

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c8eb919
Added the ability to play and pause
FallingSnow Dec 9, 2016
a6d3bf3
Performance improvement
FallingSnow Dec 9, 2016
e2a4989
Minified using google closure ADVANCED
FallingSnow Dec 9, 2016
830cb73
Added package.json
FallingSnow Dec 10, 2016
50704cb
Added systemJS support
FallingSnow Dec 10, 2016
c2bc8f7
Added destroy function
FallingSnow Dec 11, 2016
fa8f8f1
Fixed systemJS importing
FallingSnow Dec 11, 2016
8fb3750
Fixed destroy function in minified build
FallingSnow Dec 11, 2016
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6 changes: 5 additions & 1 deletion demo/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -22,13 +22,17 @@
<body>

<canvas id="zodiac"></canvas>
<div style="position: fixed; top: 0; left: 0;">
<button onClick="window.zodiac.play();">play</button>
<button onClick="window.zodiac.pause();">pause</button>
</div>

<script src="../zodiac.js"></script>
<script>

document.addEventListener('DOMContentLoaded', function () {

new Zodiac('zodiac', // HTMLCanvasElement or id
window.zodiac = new Zodiac('zodiac', // HTMLCanvasElement or id
{ //// OPTIONS
directionX: 0, // -1:left;0:random;1:right
directionY: -1, // -1:up;0:random;1:down
Expand Down
2 changes: 2 additions & 0 deletions minify.sh
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
#!/bin/bash
closure-compiler -O ADVANCED --js zodiac.js --js_output_file zodiac.min.js --create_source_map zodiac.min.js.map
22 changes: 22 additions & 0 deletions package.json
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
{
"name": "zodiac",
"version": "1.0.0",
"description": "rewrite of jnicol/particleground",
"main": "zodiac.min.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "git+https://github.com/FallingSnow/Zodiac.git"
},
"author": "indus (Stefan Keim)",
"contributors": [
"FallingSnow (Ayrton Sparling) <ayrton@sparling.us>"
],
"license": "MIT",
"bugs": {
"url": "https://github.com/FallingSnow/Zodiac/issues"
},
"homepage": "https://github.com/FallingSnow/Zodiac#readme"
}
31 changes: 27 additions & 4 deletions zodiac.js
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
var Zodiac = (function () {
function Zodiac(canvas, options) {
var _this = this;
this.playing = false;
if (options === void 0) { options = {}; }
this.options = {
directionX: -1,
Expand All @@ -40,6 +41,7 @@ var Zodiac = (function () {
this.options[key] = options[key];
}
options = this.options;
options.linkDistanceSquared = options.linkDistance * options.linkDistance;
var ctx = this._ctx = canvas.getContext('2d', { alpha: !options.backgroundColor }), tilt = { x: 0, y: 0 }, _, w, h;
var update = function () {
if (options.backgroundColor) {
Expand Down Expand Up @@ -72,8 +74,8 @@ var Zodiac = (function () {
ctx.moveTo(x + p.r, y);
ctx.arc(x, y, p.r, 0, Math.PI * 2);
for (var j = i - 1; j >= 0; j--) {
var q = _[j], dx = q.x - p.x, dy = q.y - p.y, dist = Math.sqrt((dx * dx) + (dy * dy));
if (dist < options.linkDistance) {
var q = _[j], dx = q.x - p.x, dy = q.y - p.y, distSquared = (dx * dx) + (dy * dy);
if (distSquared < options.linkDistanceSquared) {
var x = p.x + p.dx, y = p.y + p.dy, x2 = q.x + q.dx, y2 = q.y + q.dy, a = Math.atan2(y2 - y, x2 - x), cos = Math.cos(a), sin = Math.sin(a);
x += p.r * cos;
y += p.r * sin;
Expand All @@ -87,7 +89,7 @@ var Zodiac = (function () {
;
ctx.stroke();
options.dotColor && ctx.fill();
requestAnimationFrame(update);
_this.animationRequest = requestAnimationFrame(update);
};
function onMousemove(ev) {
tilt.x = ev.pageX - window.innerWidth / 2;
Expand Down Expand Up @@ -133,11 +135,29 @@ var Zodiac = (function () {
ctx.lineWidth = options.linkWidth;
ctx.fillStyle = options.dotColor;
};
this['pause'] = function() {
if (_this.playing) {
cancelAnimationFrame(_this.animationRequest);
_this.playing = false;
}
};
this['play'] = function() {
if (!_this.playing) {
_this.animationRequest = requestAnimationFrame(update);
_this.playing = true;
}
}
this['destroy'] = function() {
_this.pause();
window.removeEventListener('resize', onResize);
document.removeEventListener('mousemove', onMousemove, false);
window.removeEventListener('deviceorientation', onOrientation, false);
}
window.addEventListener('resize', onResize, false);
document.addEventListener('mousemove', onMousemove, false);
window.addEventListener('deviceorientation', onOrientation, false);
onResize();
update();
this.play();
}
return Zodiac;
})();
Expand All @@ -163,3 +183,6 @@ var Zodiac = (function () {
clearTimeout(id);
};
}());

if (typeof module === "object" && module['exports'])
module['exports'] = Zodiac;
20 changes: 9 additions & 11 deletions zodiac.min.js
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