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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>
</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: 300px; top: 0px">
yoyo with repeat forever
</div>
</div>
<script src="../src/Tween.js"></script>
<script src="js/RequestAnimationFrame.js"></script>
<script>
init();
animate();
function init() {
var target1 = document.getElementById( 'target1' ),
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(),
target2 = document.getElementById( 'target2' ),
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();
}
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;
}
</style>
</body>
</html>