mirror of
https://github.com/konvajs/konva.git
synced 2025-06-28 12:34:42 +08:00
70 lines
1.6 KiB
HTML
70 lines
1.6 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<style>
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body {
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margin: 0px;
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padding: 0px;
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}
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canvas {
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border: 1px solid #9C9898;
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}
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</style>
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</head>
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<body>
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<div id="container"></div>
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<script src="../../dist/konva-dev.js"></script>
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<script>
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var stage = new Konva.Stage({
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container: 'container',
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width: 500,
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height: 250
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});
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var layer = new Konva.Layer();
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for(var j =0; j < 20; j++) {
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layer.add(new Konva.Circle({
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x : stage.width() * Math.random(),
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y : stage.height() * Math.random(),
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radius : 50,
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stroke : 'black',
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fill : Konva.Util.getRandomColor(),
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strokeWidth : 5,
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draggable : true
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}));
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}
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stage.add(layer);
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var i, count = 500, start;
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var start = Date.now();
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for(i = 0; i< count; i++) {
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layer.draw();
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}
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var defTime = Date.now() - start;
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layer.getHitCanvas().setPixelRatio(1);
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// layer.getCanvas().setPixelRatio(1);
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layer.draw();
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start = Date.now();
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for(i = 0; i< count; i++) {
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layer.draw();
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}
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var time1 = Date.now() - start;
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layer.getHitCanvas().setPixelRatio(0.2);
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// layer.getCanvas().setPixelRatio(0.5);
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layer.draw();
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start = Date.now();
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for(i = 0; i< count; i++) {
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layer.draw();
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}
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var time05 = Date.now() - start;
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alert('def ' + defTime + ', 1 ration ' + time1 + ', 05 ration ' + time05)
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</script>
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</body>
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</html> |