mirror of
https://github.com/Hopiu/fabric.js.git
synced 2026-03-23 01:10:22 +00:00
95 lines
2.7 KiB
HTML
95 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Animating crosses (custom class) — Fabric.js demos</title>
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<script src="../../dist/all.js"></script>
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<style>
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.canvas-container { border: 1px solid #ccc; display: inline-block; vertical-align: top; }
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h2 span { font-weight: normal; }
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pre { background: #eef; display: inline-block; padding-right: 15px; margin-left: 15px }
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</style>
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<link rel="stylesheet" href="../../lib/master.css" type="text/css">
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</head>
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<body>
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<ul id="header">
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<li><a href="../index.html">Demos</a></li>
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<li><a href="../../benchmarks/index.html">Benchmarks</a></li>
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<li><a href="../../docs/index.html">Docs</a></li>
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<li><a href="../../test/unit/suite_runner.html">Tests</a></li>
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</ul>
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<div id="bd-wrapper">
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<h2><span>Fabric.js demos</span> · Animating crosses (custom class)</h2>
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<canvas id="c" width="600" height="500"></canvas>
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<script id="main">
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var canvas = new fabric.Canvas('c');
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var Cross = fabric.util.createClass(fabric.Object, {
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initialize: function(options) {
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this.callSuper('initialize', options);
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this.animDirection = 'up';
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this.width = 100;
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this.height = 100;
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this.w1 = this.h2 = 100;
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this.h1 = this.w2 = 30;
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},
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animateWidthHeight: function() {
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var interval = 2;
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if (this.h2 >= 30 && this.h2 <= 100) {
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var actualInterval = (this.animDirection === 'up' ? interval : -interval);
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this.h2 += actualInterval;
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this.w1 += actualInterval;
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}
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if (this.h2 >= 100) {
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this.animDirection = 'down';
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this.h2 -= interval;
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this.w1 -= interval;
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}
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if (this.h2 <= 30) {
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this.animDirection = 'up';
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this.h2 += interval;
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this.w1 += interval;
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}
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},
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_render: function(ctx) {
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ctx.fillRect(-this.w1 / 2, -this.h1 / 2, this.w1, this.h1);
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ctx.fillRect(-this.w2 / 2, -this.h2 / 2, this.w2, this.h2);
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}
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});
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canvas.add(
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new Cross({ top: 100, left: 100 }),
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new Cross({ top: 140, left: 230 }),
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new Cross({ top: 300, left: 210 }),
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new Cross({ top: 40, left: 400 }),
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new Cross({ top: 450, left: 400 })
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);
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setTimeout(function animate() {
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canvas.forEachObject(function(obj){ obj.animateWidthHeight() });
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canvas.renderAll();
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setTimeout(animate, 10);
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}, 10);
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</script>
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<script>
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(function(){
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var preEl = document.createElement('pre');
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preEl.innerHTML = document.getElementById('main').innerHTML;
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document.getElementById('bd-wrapper').appendChild(preEl);
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})();
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</script>
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</div>
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</body>
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</html>
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