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13_relative_start_time.html
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13_relative_start_time.html
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<!doctype html>
<html lang="en">
<head>
<title>Tween.js / relative start time</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="info">
<h1><a href="http://github.com/tweenjs/tween.js">tween.js</a></h1>
<h2>13 _ relative start time</h2>
<br />
<p>One starts late, Two starts early.</p>
</div>
<div
id="target1"
style="
position: absolute;
transform: translate(100px, 100px);
width: 100px;
height: 100px;
background: #a0dde9;
padding: 1em;
"
>
One
</div>
<div
id="target2"
style="
position: absolute;
transform: translate(100px, 300px);
width: 100px;
height: 100px;
background: #a0dde9;
padding: 1em;
"
>
Two
</div>
<script src="../dist/tween.umd.js"></script>
<script>
var position
var target
var tween1, tween2
init()
animate()
function init() {
position1 = {x: 100, y: 100, rotation: 0}
position2 = {x: 100, y: 300, rotation: 0}
target1 = document.getElementById('target1')
target2 = document.getElementById('target2')
tween1 = new TWEEN.Tween(position1)
.to({x: 700, y: 200, rotation: 359}, 2000)
.easing(TWEEN.Easing.Elastic.InOut)
.onUpdate(update1)
tween2 = new TWEEN.Tween(position2).to({x: 500, y: 300, rotation: -90}, 2000).onUpdate(update2)
tween1.delay(2000).start()
tween2.delay(100).start()
}
function animate(time) {
requestAnimationFrame(animate)
TWEEN.update(time)
}
function update1() {
target1.style.transform = `translate(${position1.x}px, ${position1.y}px) rotate(${Math.floor(
position1.rotation,
)}deg)`
}
function update2() {
target2.style.transform = `translate(${position2.x}px, ${position2.y}px) rotate(${Math.floor(
position2.rotation,
)}deg)`
}
</script>
</body>
</html>