2016-04-16 09:39:07 +08:00
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>vue.js version</title>
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2016-04-18 13:26:58 +08:00
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<script src="https://cdn.jsdelivr.net/stats.js/r11/stats.min.js"></script>
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2016-04-21 03:53:14 +08:00
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<script src="../../dist/vue.min.js"></script>
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2016-04-16 09:39:07 +08:00
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<style>
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2016-04-18 13:26:58 +08:00
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html, body {
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height: 100%;
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width: 100%;
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padding: 0;
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margin: 0;
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}
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svg {
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width: 800px;
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height: 600px;
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}
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2016-04-16 09:39:07 +08:00
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</style>
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</head>
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<body>
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2016-04-18 13:26:58 +08:00
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<h1>Animating 1000 SVG dots</h1>
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<div id="app">
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<p>
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<button @click="toggleOptimization">
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{{ optimized ? 'disable' : 'enable' }} optimization (Object.freeze)
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</button>
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</p>
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<svg>
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<circle v-for='point in model.points' :cx='point.x' :cy='point.y' r='2px' fill='#FC309D'></circle>
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</svg>
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</div>
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2016-04-16 09:39:07 +08:00
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<script type="text/javascript" charset="utf-8">
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2016-04-18 13:26:58 +08:00
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var stats = new Stats()
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stats.setMode(0)
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stats.domElement.style.position = 'absolute'
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stats.domElement.style.right = '0px'
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stats.domElement.style.top = '0px'
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document.body.appendChild(stats.domElement)
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2016-04-16 09:39:07 +08:00
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var WIDTH = 800
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var HEIGHT = 600
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new Vue({
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el: '#app',
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2016-04-18 13:26:58 +08:00
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data: {
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model: createModel(1000),
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optimized: false
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},
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2016-04-16 09:39:07 +08:00
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created: function () {
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var self = this
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2016-04-18 13:26:58 +08:00
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requestAnimationFrame(render)
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2016-04-16 09:39:07 +08:00
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stats.begin()
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function render () {
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stats.end()
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stats.begin()
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2016-04-18 13:26:58 +08:00
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requestAnimationFrame(render)
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self.model.step()
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if (self.optimized) {
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self.$forceUpdate()
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}
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}
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},
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methods: {
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toggleOptimization: function () {
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this.model = this.optimized
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? createModel(1000)
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: Object.freeze(createModel(1000))
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this.optimized = !this.optimized
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2016-04-16 09:39:07 +08:00
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}
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}
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});
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function createModel (count) {
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var points = []
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for (var i = 0; i < count; ++i) {
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points.push({
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x: Math.random() * WIDTH,
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y: Math.random() * HEIGHT,
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vx: Math.random() * 4 - 2,
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vy: Math.random() * 4 - 2
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})
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}
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return {
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points: points,
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step: step
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}
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function step () {
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points.forEach(move)
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}
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function move (p) {
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if (p.x > WIDTH || p.x < 0) p.vx *= -1
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if (p.y > HEIGHT || p.y < 0) p.vy *= -1
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p.y += p.vy
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p.x += p.vx
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}
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}
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</script>
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</body>
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</html>
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