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10_yoyo.html
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10_yoyo.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Tween.js / yoyo</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>10 _ yoyo</h2>
<p>Demonstrating the yoyo() feature.</p>
<button onclick="restart()">restart</button>
<button onclick="stop()">stop</button>
<button onclick="start()">start</button>
<button onclick="pause()">pause</button>
<button onclick="resume()">resume</button>
</div>
<div style="position: absolute; top: 100px; left: 400px;">
<div id="target1" data-rotation="0" data-y="0" class="box" style="left: 0px; top: 0px;">
yoyo with repeat once
</div>
<div id="target2" data-rotation="0" data-y="0" class="box" style="left: 200px; top: 0px;">
yoyo with repeat forever
</div>
<div id="target3" data-rotation="0" data-y="0" class="box" style="left: 400px; top: 0px;">
yoyo with repeat once, relative values
</div>
<div id="target4" data-rotation="0" data-y="0" class="box" style="left: 600px; top: 0px;">
yoyo with repeat forever, relative values
</div>
</div>
<script src="../dist/tween.umd.js"></script>
<script src="js/RequestAnimationFrame.js"></script>
<script>
init()
animate()
var restart, stop, start, pause, resume
function init() {
var target1 = document.getElementById('target1')
var tween1 = new TWEEN.Tween(target1.dataset)
.to({rotation: 360, y: 300}, 750)
.repeat(1)
.delay(1000)
.yoyo(true)
.easing(TWEEN.Easing.Cubic.InOut)
.onUpdate(function (object) {
updateBox(target1, object)
})
.start()
var target2 = document.getElementById('target2')
var tween2 = new TWEEN.Tween(target2.dataset)
.to({rotation: 360, y: 300}, 750)
.repeat(Infinity)
.delay(1000)
.yoyo(true)
.easing(TWEEN.Easing.Cubic.InOut)
.onUpdate(function (object) {
updateBox(target2, object)
})
.start()
var target3 = document.getElementById('target3')
var tween3 = new TWEEN.Tween(target3.dataset)
.to({rotation: '+360', y: '+300'}, 750)
.repeat(1)
.delay(1000)
.yoyo(true)
.easing(TWEEN.Easing.Cubic.InOut)
.onUpdate(function (object) {
updateBox(target3, object)
})
.start()
var target4 = document.getElementById('target4')
var tween4 = new TWEEN.Tween(target4.dataset)
.to({rotation: '+360', y: '+300'}, 750)
.repeat(Infinity)
.delay(1000)
.yoyo(true)
.easing(TWEEN.Easing.Cubic.InOut)
.onUpdate(function (object) {
updateBox(target4, object)
})
.start()
restart = function () {
tween1.stop().start()
tween2.stop().start()
tween3.stop().start()
tween4.stop().start()
}
stop = function () {
tween1.stop()
tween2.stop()
tween3.stop()
tween4.stop()
}
start = function () {
tween1.start()
tween2.start()
tween3.start()
tween4.start()
}
pause = function () {
tween1.pause()
tween2.pause()
tween3.pause()
tween4.pause()
}
resume = function () {
tween1.resume()
tween2.resume()
tween3.resume()
tween4.resume()
}
}
function animate(time) {
requestAnimationFrame(animate)
TWEEN.update(time)
}
function updateBox(box, params) {
var s = box.style,
transform = 'translateY(' + Math.round(params.y) + 'px) rotate(' + Math.floor(params.rotation) + 'deg)'
s.webkitTransform = transform
s.mozTransform = transform
s.transform = transform
}
</script>
<style type="text/css">
.box {
width: 100px;
height: 100px;
display: flex;
flex-flow: row;
align-items: center;
text-align: center;
-webkit-border-radius: 70px;
-moz-border-radius: 70px;
border-radius: 70px;
position: absolute;
border: 1px solid black;
font-size: 10px;
padding: 20px;
}
#target1 {
background: #fcc;
}
#target2 {
background: #cfc;
}
#target3 {
background: orange;
}
#target4 {
background: skyblue;
}
</style>
</body>
</html>