blob: d338d10cd74b1abc6c38470535a486c9a3948d91 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Perspective By Example</title>
<style type="text/css" media="screen">
body {
font-family: 'Lucida Grande', Verdana, Arial;
font-size: 12px;
}
#container {
position: relative;
height: 300px;
width: 300px;
margin: 50px 100px;
border: 2px solid blue;
-webkit-perspective: 500;
}
#container > div {
position: absolute;
margin: 10px;
width: 280px;
height: 140px;
padding: 20px;
font-family: monospace;
font-size: 12pt;
border: 1px solid black;
-webkit-box-sizing: border-box;
}
#container > :first-child {
background-color: #49DC93;
-webkit-transform: rotateY(45deg);
}
#container > :last-child {
top: 140px;
background-color: #FF6;
-webkit-transform: rotateX(45deg);
}
#controls {
margin: 50px 100px;
width: 300px;
}
#controls > input {
width: 100%;
}
</style>
<script type="text/javascript" charset="utf-8">
function updatePerpective(value)
{
document.getElementById('container').style.webkitPerspective = value;
document.getElementById('perspective-value').innerText = value;
}
function setPerspectiveOrigin(event)
{
var container = document.getElementById('container');
var offsetX = event.pageX - container.offsetLeft;
var offsetY = event.pageY - container.offsetTop;
var originStyle = (100 * offsetX / container.offsetWidth) + '% ' + (100 * offsetY / container.offsetHeight) + '%';
container.style.webkitPerspectiveOrigin = originStyle;
}
window.addEventListener('load', function() {
var container = document.getElementById('container');
container.addEventListener('mousemove', setPerspectiveOrigin, false);
container.addEventListener('mouseout', function() {
container.style.webkitPerspectiveOrigin = '50% 50%';
}, false);
updatePerpective(500)
}, false);
</script>
</head>
<body>
<div id="container">
<div>-webkit-transform: rotateY(45deg)</div>
<div>-webkit-transform: rotateX(45deg)</div>
</div>
<div id="controls">
<input type="range" min="120" max="5000" value="500" onchange="updatePerpective(this.value)"><br>
Current perspective: <span id="perspective-value"></span>
</div>
<h1>Perspective</h1>
<p>Drag the slider to change the -webkit-perspective value on the blue box. You can also
hover over the blue box to change the perspective-origin to be under the mouse.</p>
</body>
</html>