JS实现六边形3D拖拽翻转效果的方法

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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>javascript六边形3d拖拽翻转效果</title>
</head>
    <style>
      #box{width:200px;height:200px;margin: 200px auto; background: #ccc; position: relative;
      transform:perspective(800px) rotateY(-60deg) rotateX(45deg);transform-style:preserve-3d;}
      #box div{width:100%;height: 100%; position: absolute;top:0;left:0; background-size: cover;-webkit-box-shadow:0 0 100px #5fbcff; opacity: 0.8;}
      .front{ transform: translateZ(100px); background:#f00;}
      .back{transform: translateZ(-100px); background:#20ab4f;}
      .top{transform:translateY(-100px) rotateX(90deg); background: #ff7800;}
      .bottom{transform:translateY(100px) rotateX(-90deg); background: #00f6ff;}
      .left{transform:translateX(-100px) rotateY(90deg); background: #0084ff;}
      .right{transform:translateX(100px) rotateY(-90deg); background: #b400ff;}
    </style>
    <script>
      window.onload=function(){
        var oDiv=document.querySelector("#box");
        var y=-60;
        var x=45;
        oDiv.onmousedown=function(ev){
          var ev=ev||event;
          var disX=ev.clientX-y;
          var disY=ev.clientY-x;
          document.onmousemove=function(ev){
            var ev=ev||event;
            y=ev.clientY-disY;
            x=ev.clientX-disX;
            oDiv.style.transform='perspective(800px) rotateX('+x+'deg) rotateY('+y+'deg)';
            
          }
          document.onmouseup=function(){
            document.onmouseup=null;
            document.onmousemove=null;
            oDiv.releaseCapture&&oDiv.releaseCapture();
          }
          oDiv.setCapture&&oDiv.setCapture()
          return false;
        }
        
      }
    </script>
  </head>
  <body>
    <div id="box">
      <div class="front"></div>
      <div class="back"></div>
      <div class="top"></div>
      <div class="bottom"></div>
      <div class="left"></div>
      <div class="right"></div>
    </div>
  </body>
</html>