jquery和CSS3 3d立方体旋转特效

这是一款使用jquery和CSS3制作的3D旋转立方体特效。该特效使用GSAP来制作动画，通过CSS transform来制作立方体效果兼容除IE之外的其它现代浏览器。

由于IE浏览器不知支持transform-style:preserve3d，所以在IE中看到的不是立方体效果，而是平面效果。

使用方法

在页面中引入jquery和TweenMax.min.js文件。

<script src='path/to/jquery.min.js'></script>
<script src='path/to/TweenMax.min.js'></script>                  
                

HTML结构

3D立方体的HTML结构如下：

<div id="trans3DDemo1">
      <div id="trans3DBoxes1">
          <div>Front</div>
          <div>Left</div>
          <div>Right</div>
          <div>Top</div>
          <div>Bottom</div>
          <div>Back</div>
      </div>
</div>                  
                

CSS样式

为立方体添加如下的CSS样式：

#trans3DDemo1 {
  position:relative;
  display:inline-block;
  width:250px;
  height:250px;
}

#trans3DBoxes1 div {
  position:absolute;
  width:248px;
  height:248px;
  padding:0;
  margin:0;
  background:url(../img/girl.jpg);
  border:solid 2px #FFF;
  display:block;
  text-align:center;
  font-size:36px;
  font-weight:bold;
}                  
                

JavaScript

在页面DOM元素加载完毕之后，通过下面的方法来初始化该立方体效果：

var trans3DDemo1 = $("#trans3DDemo1"), 
    trans3DBoxes1 = $("#trans3DBoxes1"),// div containing all the the boxes
    boxes1 = $("#trans3DBoxes1 div"), // all the boxes
    threeDTimeline = new TimelineMax({onUpdate:updateCube, repeat:-1}),
    stageW = ($(window).width())/2,
    stageH = ($(window).height())/2,
    stageX = (stageW-(trans3DBoxes1.width()/2)),
    stageY = (stageH-(250/2));
//transformPerspective gives the element its own vanishing point
//perspective allows all the child elements (orange boxes) to share the same vanishing point with each other
//transformStyle:"preserve3d" allows the child elements to maintain their 3D position (noticeable only when their parent div is rotated in 3D space)
TweenMax.set(trans3DBoxes1, {css:{transformPerspective:3000, transformStyle:"preserve-3d"}}); //saves a dozen lines of vendor-prefixed css ;)
/*
K, lets build a cube and place it
boxes1[0] = frontside
boxes1[1] = leftside
boxes1[2] = rightside
boxes1[3] = topside
boxes1[4] = bottomside
boxes1[5] = backside
*/
threeDTimeline.set(boxes1[0], {rotationX:0, rotationY:0, x:0, y:0, z:125, opacity:0.85})
              .set(boxes1[1], {rotationX:0, rotationY:-90, x:-125, y:0, z:0, opacity:0.85})
        .set(boxes1[2], {rotationX:0, rotationY:90, x:125, y:0, z:0, opacity:0.85})
        .set(boxes1[3], {rotationX:90, rotationY:0, x:0, y:-125, z:0, opacity:0.85})
        .set(boxes1[4], {rotationX:-90, rotationY:0, x:0, y:125, z:0, opacity:0.85})
        .set(boxes1[5], {rotationX:0, rotationY:180, x:0, y:0, z:-125, opacity:0.85})
        .set(trans3DBoxes1, {x:150, y:150, transformOrigin:"125px 125px 0px"});

// hover events
boxes1.each(function (index, element) {
      $(element).hover(over, out);
      function over(){
        TweenMax.to(element, 0.15, {opacity:0.33});
        //threeDTimeline.pause();
      }
      function out(){
        TweenMax.to(element, 0.15, {opacity:0.85});
        //threeDTimeline.play();
      }
});

threeDTimeline.to(trans3DBoxes1, 15, {css:{rotationY:360, rotationX:-720, transformOrigin:"125px 125px 0px"}, ease:Power0.easeNone});

function updateCube(){
  stageW = ($(window).width())/2;
  stageH = ($(window).height())/2;
  stageX = (stageW-(trans3DBoxes1.width()/2));
  stageY = (stageH-(250/2));
  TweenMax.to(trans3DBoxes1, 1, {css:{x:stageX, y:stageY}});
}