3D变换和动画
- 建立3D空间，transform-style： preserve-3d
- perspective： 100px; 景深
- perspective-origin：center center -180px; 景深基点
- transform新增函数如下：
- rotateX();
- rotateY();
- rotateZ();
- translateZ();
- scaleZ();
- 3d动画demo，只支持Webkit内核，可自行运行查看效果
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
<style>
.wrap { width: 100px; height: 100px; -webkit-perspective: 200px; border: 5px solid pink; padding: 100px; margin: 200px auto 0; -webkit-transform: scale(2);}
#box {width: 100px; height: 100px; position: relative; text-align: center; line-height: 100px; -webkit-transform-style: preserve-3d; transition: 3s; -webkit-transform-origin: center center -50px;}
#box div {width: 100px; height: 100px; position: absolute; font-size: 50px; color: #FFF;}
#box div:nth-of-type(1) {background-color: #F90; left: 0px; top: 0px;}
#box div:nth-of-type(2) {background-color: #E08; left: 0px; top: -100px; -webkit-transform-origin: bottom; -webkit-transform: rotateX(90deg);}
#box div:nth-of-type(3) {background-color: #A01; left: -100px; top: 0px; -webkit-transform-origin: right; -webkit-transform: rotateY(-90deg);}
#box div:nth-of-type(4) {background-color: #CC0; left: 100px; top: 0px; -webkit-transform-origin: left; -webkit-transform: rotateY(90deg);}
#box div:nth-of-type(5) {background-color: #D34; left: 0px; top: 100px; -webkit-transform-origin: top; -webkit-transform: rotateX(-90deg);}
#box div:nth-of-type(6) {background-color: #000; left: 0px; top: 0px; -webkit-transform: translateZ(-100px) rotateX(180deg);}
.wrap:hover #box{-webkit-transform: rotateX(360deg);}
</style>
<script>
window.onload = function() {
var oBox = document.getElementById("box");
oBox.style.WebkitTransform = "rotateX(360deg)";
addEnd(oBox, end1); function end1() {
addEnd(oBox, end2);
oBox.style.WebkitTransform = "rotateX(0deg)";
} function end2() {
addEnd(oBox, end3);
oBox.style.WebkitTransform = "rotateY(360deg)";
} function end3() {
oBox.style.WebkitTransform = "rotateY(0deg)";
} function addEnd(obj, fn) {
obj.addEventListener('WebkitTransitionEnd', fn, false);
obj.addEventListener('transitionend', fn, false);
} function removeEnd(obj, fn) {
obj.removeEventListener('WebkitTransitionEnd', fn, false);
obj.removeEventListener('transitionend', fn, false);
}
};
</script>
</head>
<body>
<div class="wrap">
<div id="box">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
</div>
</div>
</body>
</html>
