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https://github.com/tweenjs/tween.js.git
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122 lines
2.6 KiB
HTML
122 lines
2.6 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<title>Tween.js / dynamic to interpolation array</title>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<style>
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body {
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margin: 0px;
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}
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#scene1,
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#scene2 {
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display: inline-block;
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font-size: 13px;
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padding-right: 32px;
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}
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</style>
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<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<div id="info" style="position: relative">
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<h1><a href="http://github.com/tweenjs/tween.js">tween.js</a></h1>
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<h2>07a _ dynamic to interpolation array</h2>
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<p>tweening towards two moving targets</p>
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<div id="scene1">
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<p><code>.dynamic(false)</code></p>
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</div>
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<div id="scene2">
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<p><code>.dynamic(true)</code></p>
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</div>
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</div>
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<script src="../dist/tween.umd.js"></script>
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<script type="module">
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import {drawRabbit, drawFox} from './js/drawings.js'
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startScene('scene1', false)
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startScene('scene2', true)
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function startScene(id, dynamic) {
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var context
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var width
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var height
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var rabbit1
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var rabbit2
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var fox
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init()
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animate()
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function init() {
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width = 480
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height = 320
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var scene = document.getElementById(id)
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var canvas = document.createElement('canvas')
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canvas.width = width
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canvas.height = height
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scene.appendChild(canvas)
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context = canvas.getContext('2d')
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rabbit1 = {
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x: width * 0.8,
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y: 50,
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}
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new TWEEN.Tween(rabbit1)
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.to({x: width / 2, y: height - 50}, 2000)
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.easing(TWEEN.Easing.Cubic.InOut)
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.onUpdate(function ({x, y}) {
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rabbits.x[1] = x
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rabbits.y[1] = y
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})
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.start()
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rabbit2 = {
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x: width - 50,
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y: height - 50,
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}
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new TWEEN.Tween(rabbit2)
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.to({x: width / 3, y: 50}, 3000)
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.easing(TWEEN.Easing.Cubic.InOut)
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.onUpdate(function ({x, y}) {
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rabbits.x[2] = x
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rabbits.y[2] = y
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})
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.start()
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var rabbits = {
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x: [rabbit1.x, rabbit2.x],
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y: [rabbit1.y, rabbit2.y],
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}
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fox = {
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x: 50,
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y: 50,
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}
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new TWEEN.Tween(fox).to(rabbits, 3000).dynamic(dynamic).interpolation(TWEEN.Interpolation.CatmullRom).start()
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}
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function animate(time) {
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TWEEN.update(time)
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context.fillStyle = 'rgb(240,250,240)'
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context.fillRect(0, 0, width, height)
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drawRabbit(context, rabbit1.x, rabbit1.y, 'rgb(0,0,150)')
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drawRabbit(context, rabbit2.x, rabbit2.y, 'rgb(0,80,80)')
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drawFox(context, fox.x, fox.y, 'rgb(200,80,80)')
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requestAnimationFrame(animate)
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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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