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70 lines
1.3 KiB
HTML
70 lines
1.3 KiB
HTML
4 months ago
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf8" />
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<title>clearArea</title>
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<style>
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html, body, #canvas {
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width: 100%;
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height: 100%;
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margin: 0px;
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padding: 0px;
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}
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</style>
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<script src="../../dist/crender.map.js"></script>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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</body>
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<script>
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const { CRender, extendNewGraph } = window.CRender
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const render = new CRender(document.querySelector('#canvas'))
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const [w, h] = render.area
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function randomNum (minNum, maxNum) {
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switch (arguments.length) {
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case 1:
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return parseInt(Math.random() * minNum + 1, 10)
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case 2:
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return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10)
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default:
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return 0
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}
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}
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const circles = new Array(100).fill(0).map(foo => render.add({
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name: 'circle',
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shape: {
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rx: randomNum(0, w),
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ry: randomNum(0, h),
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r: 10
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},
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style: {
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fill: '#ffee97',
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stroke: 'goldenrod',
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lineWidth: 2
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}
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}))
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function wait (time) {
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return new Promise(resolve => setTimeout(resolve, time))
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}
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async function start () {
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await wait(1000)
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render.clearArea()
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}
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start()
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</script>
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</html>
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