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Add demo of an animating cross (demonstrating how to create a custom class).

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kangax 2011-05-24 15:14:40 -04:00
parent f37b93e6c1
commit dcaee8bf0c
2 changed files with 93 additions and 1 deletions
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demos/cross/index.html Normal file
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Animating crosses (custom class)</title>
<script src="../../dist/all.js"></script>
<style>
.canvas-container { border: 1px solid #ccc; display: inline-block; vertical-align: top; }
h2 span { font-weight: normal; }
pre { background: #eef; display: inline-block; padding-right: 15px; margin-left: 15px }
</style>
<link rel="stylesheet" href="../../lib/master.css" type="text/css">
</head>
<body>
<ul id="header">
<li><a href="../index.html">Demos</a></li>
<li><a href="../../docs/index.html">Docs</a></li>
<li><a href="../../test/unit/suite_runner.html">Tests</a></li>
</ul>
<div id="bd-wrapper">
<h2><span>Fabric.js demos</span> &middot; Animating crosses (custom class)</h2>
<canvas id="c" width="600" height="500"></canvas>
<script id="main">
var canvas = new fabric.Element('c');
var Cross = fabric.util.createClass(fabric.Object, {
initialize: function(options) {
this.callSuper('initialize', options);
this.animDirection = 'up';
this.width = 100;
this.height = 100;
this.w1 = this.h2 = 100;
this.h1 = this.w2 = 30;
},
animateWidthHeight: function() {
var interval = 2;
if (this.h2 >= 30 && this.h2 <= 100) {
var actualInterval = (this.animDirection === 'up' ? interval : -interval);
this.h2 += actualInterval;
this.w1 += actualInterval;
}
if (this.h2 >= 100) {
this.animDirection = 'down';
this.h2 -= interval;
this.w1 -= interval;
}
if (this.h2 <= 30) {
this.animDirection = 'up';
this.h2 += interval;
this.w1 += interval;
}
},
_render: function(ctx) {
ctx.fillRect(-this.w1 / 2, -this.h1 / 2, this.w1, this.h1);
ctx.fillRect(-this.w2 / 2, -this.h2 / 2, this.w2, this.h2);
}
});
canvas.add(new Cross({ top: 100, left: 100 }));
canvas.add(new Cross({ top: 140, left: 230 }));
canvas.add(new Cross({ top: 300, left: 210 }));
canvas.add(new Cross({ top: 40, left: 400 }));
canvas.add(new Cross({ top: 450, left: 400 }));
setTimeout(function animate() {
canvas.forEachObject(function(obj){ obj.animateWidthHeight() });
canvas.renderAll();
setTimeout(animate, 10);
}, 10);
</script>
<script>
(function(){
var preEl = document.createElement('pre');
preEl.innerHTML = document.getElementById('main').innerHTML;
document.getElementById('bd-wrapper').appendChild(preEl);
})();
</script>
</div>
</body>
</html>

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demos/index.html
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</ul>
<div id="bd-wrapper">
<ul>
<li><a href="ladybug/index.html">Ladybugs</a></li>
<li style="margin-bottom:5px"><a href="ladybug/index.html">Ladybugs</a></li>
<li style="margin-bottom:5px"><a href="cross/index.html">Crosses</a></li>
</ul>
</div>
</body>