mirror of
https://github.com/tweenjs/tween.js.git
synced 2025-12-08 20:16:12 +00:00
122 lines
2.7 KiB
HTML
122 lines
2.7 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</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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#target {
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font-size: 13px;
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padding: 0px 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>07 _ dynamic to</h2>
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<p>tweening towards a moving target</p>
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</div>
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<div id="target"></div>
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<script src="../dist/tween.umd.js"></script>
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<script src="js/RequestAnimationFrame.js"></script>
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<script>
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init()
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animate()
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function init() {
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var width = 480
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var height = 320
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var target = document.getElementById('target')
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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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target.appendChild(canvas)
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var context = canvas.getContext('2d')
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var rabbit = {x: width - 50, y: 50}
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new TWEEN.Tween(rabbit)
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.to({x: width - 50, y: height - 50}, 3000)
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.easing(TWEEN.Easing.Exponential.InOut)
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.onUpdate(function (object) {
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// draw background
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context.fillStyle = 'rgb(240,250,240)'
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context.fillRect(0, 0, width, height)
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// draw rabbit
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context.fillStyle = 'rgb(150,150,150)'
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context.save()
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context.translate(object.x, object.y)
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context.beginPath()
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context.moveTo(0, 0)
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context.bezierCurveTo(15, 0, 15, -40, 5, -30)
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context.lineTo(0, 0)
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context.bezierCurveTo(-15, 0, -15, -40, -5, -30)
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context.lineTo(0, 0)
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context.fill()
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context.beginPath()
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context.arc(0, 0, 15, 0, Math.PI * 2, true)
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context.fill()
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context.restore()
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})
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.start()
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var fox = {x: 50, y: 50}
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new TWEEN.Tween(fox)
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.to(rabbit, 3000)
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.easing(TWEEN.Easing.Exponential.InOut)
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.onUpdate(function (object) {
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// draw fox
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context.fillStyle = 'rgb(200,80,80)'
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context.save()
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context.translate(object.x, object.y - 13)
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context.scale(1.2, 1.2)
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context.beginPath()
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context.moveTo(4, 24)
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context.lineTo(8, 16)
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context.lineTo(14, 10)
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context.lineTo(15, 0)
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context.lineTo(9, -10)
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context.lineTo(2, 0)
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context.lineTo(-2, 0)
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context.lineTo(-9, -10)
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context.lineTo(-15, 0)
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context.lineTo(-14, 10)
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context.lineTo(-8, 16)
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context.lineTo(-4, 24)
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context.closePath()
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context.fill()
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context.restore()
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})
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.start()
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}
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function animate(time) {
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requestAnimationFrame(animate)
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TWEEN.update(time)
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}
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animate()
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</script>
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</body>
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</html>
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