Javascript implementiert 3D-Wechselfokus-Map_Javascript-Fähigkeiten

Ich habe einen kleinen Versuch unternommen, das Ziehen mit der Maus mit CSS3 zu verwenden. Der Screenshot sieht wie folgt aus:

Freunde, die mit dem Drag-Effekt vertraut sind, sollten mit der Methode des Ziehens nach links und rechts vertraut sein, nachdem man die Maus gedrückt gehalten hat.
In dieser kleinen Demo wird versucht, relevante Wissenspunkte in CSS3 auf die Bildanzeige anzuwenden,
Wenn Sie das Bild ziehen, entsteht ein dreidimensionales Gefühl~~

Der direkte Code lautet wie folgt:

#list{ width:400px; height:440px; margin:30px auto 30px; position:relative;z-index:500;}
#list li{height:40px;width:400px; position:relative;cursor:pointer;-webkit-perspective:800px; }
#list li div{height:40px;width:400px; -webkit-transform-style:preserve-3d;-webkit-backface-visibility:hidden;position:relative;-webkit-transform:translateZ(-200px);-webkit-transform:50ms all linear;}
#list span{height:40px; width:400px; position:absolute;left:0;top:0; overflow:hidden;}
#list div span:nth-child(1){background:url(img/1.jpg) no-repeat; -webkit-transform:translateZ(200px);}
#list div span:nth-child(2){background:url(img/2.jpg) no-repeat;-webkit-transform-origin:right;-webkit-transform:translateZ(200px) rotateY(-90deg);
}
#list div span:nth-child(3){background:url(img/3.jpg) no-repeat;-webkit-transform-origin:right;-webkit-transform:translateZ(-200px);
}
#list div span:nth-child(4){background:url(img/4.jpg) no-repeat;-webkit-transform-origin:left;-webkit-transform:translateZ(200px) rotateY(90deg);
}
#list em{ width:400px;height:400px; position:absolute;left:0;background:#666;}
#list li em:nth-of-type(1){-webkit-transform-origin:top;-webkit-transform:translateZ(200px) rotateX(-90deg); top:0;}
#list li em:nth-of-type(2){-webkit-transform-origin:bottom;-webkit-transform:translateZ(200px) rotateX(90deg); bottom:0;}
#list li:nth-last-child(1){ z-index:10;}
#list li:nth-last-child(2){ z-index:20;}
#list li:nth-last-child(3){ z-index:30;}
#list li:nth-last-child(4){ z-index:40;}
#list li:nth-last-child(5){ z-index:50;}
#list li:nth-last-child(6){ z-index:60;}
#list li:nth-child(2) span{ background-position:0 -40px;}
#list li:nth-child(3) span{ background-position:0 -80px;}
#list li:nth-child(4) span{ background-position:0 -120px;}
#list li:nth-child(5) span{ background-position:0 -160px;}
#list li:nth-child(6) span{ background-position:0 -200px;}
#list li:nth-child(7) span{ background-position:0 -240px;}
#list li:nth-child(8) span{ background-position:0 -280px;}
#list li:nth-child(9) span{ background-position:0 -320px;}
#list li:nth-child(10) span{ background-position:0 -360px;}
#list li:nth-child(11) span{ background-position:0 -400px;}
#btns{ width:130px; margin:0 auto;}
#btns li{ width:20px;height:20px;background:#fff; font-size:14px; font-weight:bold; text-align:center; line-height:20px; float:left; color:#f60; margin:0 3px; cursor:pointer;}
#btns .active{ background:#f60;color:#fff;}

HTML

<ul id="list">
 <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
  <li>
   <div>
      <span></span>
      <span></span>
      <span></span>
      <span></span>
      <em></em>
      <em></em>
    </div>
  </li>
</ul>
<ol id="btns">
 <li class="active">1</li>
  <li>2</li>
  <li>3</li>
  <li>4</li>
</ol>

JAVASCRIPT

var oList=document.getElementById("list");
var oBtns=document.getElementById("btns");
tabPic(oList,oBtns);
function tabPic(obj,btns)
{
 var aLi=obj.getElementsByTagName("li");
 var aBtn=btns.getElementsByTagName("li");
 var oUl=document.getElementsByTagName('ul')[0];
 var iDis=aLi[0].offsetWidth;
 var iDeg=90;
 aBtn.iNow=0;
 for(var i=0;i<aBtn.length;i++)
 {
 oUl.title=aBtn[i].title='妙味课堂-www.miaov.com';
 aBtn[i].index=i;
 aBtn[i].onclick=function()
 {
  for(var i=0;i<aLi.length;i++)
  {
  starMove(aLi[i],-this.index*iDeg,aBtn);
  }
 };
 }
 for(var i=0;i<aLi.length;i++)
 { 
 aLi[i].index=i;
 aLi[i].iDeg=0;
 aLi[i].off=false;
 aLi[i].onmousedown=function(ev)
 {
  if(this.off)
  {
  return;
  }
  var ev=event||ev;
  var iNowX=ev.clientX;
  var iNowDeg=0;
  var oThis=this;
  var iLength=0;
  var iMin=0;
  var iMax=0;
  document.onmousemove=function(ev)
  {
  if(Math.abs(iNowDeg)>=80)
  {
   return;
  }
  var ev=event||ev;
  iNowDeg+=(ev.clientX-iNowX)/iDis*(iDeg-30);
  iLength=Math.abs(parseInt(iNowDeg/9));
  iMin=oThis.index-iLength>0&#63;oThis.index-iLength:0;
  iMax=oThis.index+iLength<aLi.length&#63;oThis.index+iLength:aLi.length-1; 
  for(var i=iMin;i<=iMax;i++)
  {
   aLi[i].iDeg+=(ev.clientX-iNowX)/iDis*(iDeg-30);
   setDeg(aLi[i]);
  }
  iNowX=ev.clientX;  
  }
  document.onmouseup=function()
  {
  var iEnd=0;
  document.onmouseup=document.onmousemove=null;
  if( Math.abs(iNowDeg)>iDeg/4)
  {
   iEnd=iNowDeg>0&#63;90-iNowDeg:-(90-Math.abs(iNowDeg));
  }
  else
  {
   iEnd=-iNowDeg;
  }  
  iEnd=Math.round(iEnd+oThis.iDeg);
  for(var i=0;i<aLi.length;i++)
  {
   starMove(aLi[i],iEnd,aBtn);
  }
  }
  return false;
 };
 }
}
function starMove(obj,iTarget,aBtn)
{
 if(obj.timer)
 {
 clearInterval(obj.timer);
 }
 obj.off=true;
 var iSpeed=0;
 var iNow= iTarget>=0&#63; Math.abs((aBtn.length-iTarget/90)%aBtn.length): Math.abs((iTarget/90) % aBtn.length);
 if(iNow!=aBtn.iNow)
 {
 aBtn[aBtn.iNow].className="";
 aBtn.iNow=iNow;
 aBtn[aBtn.iNow].className="active";
 }
 obj.timer=setInterval(
 function()
 {
  iSpeed+=(iTarget-obj.iDeg)/12;
  iSpeed*=0.86;
  if(Math.abs(obj.iDeg-iTarget)<0.5 && Math.abs(iSpeed)<0.5)
  {
  clearInterval(obj.timer);
  obj.iDeg=iTarget;
  obj.off=false;
  }
  else
  { 
  obj.iDeg+=iSpeed;
  }
  setDeg(obj);
 },24
 );
}
function setDeg(obj)
{
 var oDiv=obj.children[0];
 with(oDiv.style)
 {
 WebkitTransform="translateZ(-200px) rotateY("+obj.iDeg+"deg)";
 }
}

Dieser Effekt ist nur eine Testversion. Wenn Sie ihn benötigen, können Sie unten eine Nachricht hinterlassen und den Quellcode direkt senden.