圖片圍成環(huán)形滾動(dòng)，有空間感
圖片圍成環(huán)形來回滾動(dòng)的圖片特效，有立體感，而且設(shè)計(jì)的也挺不錯(cuò)，演示中源碼愛好者去除了部分圖片，為了讓頁面加載更快，如果你想用的話，你可以無限制添加下去，只要你的網(wǎng)頁很快哦。
<html>
<head>
<title>圖片環(huán)形滾動(dòng)</title>
<style>
html,body{background:#990000;margin:0px; }
#pics_3d{
position:absolute;
height:300px;
width:100%;
background:#000;
top:120px;
border-bottom:20px solid #420000;
border-top:20px solid #420000;
}
img{
position:absolute;
background:#eee;
left:0;top:0;
border:5px solid #00CCFF;
}
</style>
</head>
<body>
<div id="pics_3d">
<img src="/jscss/demoimg/wall5.jpg" />
<img src="/jscss/demoimg/wall6.jpg" />
<img src="/jscss/demoimg/wall7.jpg" />
</div>
</body>
<script >
Item=function(UI){
this.angle=0;
this.UI=UI;
this.update();
};
Item.ini={
axle_w:400,
axle_h:10,
cen_x:500,
cen_y:260
};
Item.prototype.update=function(){
var J=this.UI.style,C=Item.ini,W=C.axle_w,H=C.axle_h,X=C.cen_x,Y=C.cen_y;
var angle=this.angle/180*Math.PI;
var left=Math.cos(angle)*W+X;
var top=Math.sin(angle)*H+Y;
var A=this.angle>270?this.angle-360:this.angle;
var size=360-Math.abs(90-A)*3;
this.UI.width=Math.max(size,120);
var opacity=Math.max(10,size-180);
J.filter='alpha(opacity='+opacity+')';
J.opacity=opacity/100;
J.left=(left-this.UI.offsetWidth/2)+'px';
top=(top-this.UI.offsetHeight)+'px';
J.top=top;
J.zIndex=parseInt(size*100);
};
Nav_3D={
items:[],
dir:1,
index:0,
hover:false,
add:function(item){
this.items.push(item);
item.index=this.items.length-1;
item.UI.onclick=function (){
var J=item.angle,M=Nav_3D;
if(M.uping)return;
if(J==90){
return alert('goto new url..')
};
M.wheel_90(item);
M.index=item.index;
};
item.UI.onmouseover=function (){
if(item.angle==90){
Nav_3D.hover=true;
clearTimeout(Nav_3D.autoTimer);
};
};
item.UI.onmouseout=function (){
if(item.angle==90){
Nav_3D.hover=false;
Nav_3D.auto();
};
};
return this;
},
wheel_90:function(hot){
if(this.uping)return;
this.uping=true;
var This=this;
this.timer=setInterval(function (){
clearTimeout(This.autoTimer);
var A=hot.angle;
This.dir=A<270&&A>90?-1:1;
if(A==90){
clearInterval(This.timer);
This.uping=false;
This.onEnd(hot);
}
if(A>270)A-=360;
var set=Math.ceil(Math.abs((90-A)*0.1));
for (var i=0;i<This.items.length;i++ ) {
var J=This.items[i];
J.angle+= (set*This.dir);
J.update();
if(J.angle>360)J.angle-=360;
if(J.angle<0)J.angle +=360;
};
},15);
},
ready:function(){
var J=this.items,step=parseInt(360/J.length);
for (var i=0;i<J.length;i++) {J[i].angle=i*step+90;}
this.wheel_90(this.items[0]);
Nav_3D.prevHot=this.items[0].UI;
Nav_3D.setHot();
},
setHot:function(isHot){
if(!this.prevHot)return;
with(this.prevHot.style){
borderColor=isHot!==false?'#CC0000':'#00CCFF';
cursor=isHot!==false?'default':"pointer";
};
return this;
},
auto:function(){
this.index--;
if(this.index<0)this.index=this.items.length-1;
var J=this.items[this.index];
this.setHot(false).prevHot=J.UI;
this.setHot();
this.wheel_90(J);
},
onEnd:function(hot){
if(this.hover){
return setTimeout(function(){Nav_3D.onEnd();},100);
}
this.autoTimer=setTimeout(function(){Nav_3D.auto();},1500);
}
};
var imgs=document.getElementById("pics_3d").getElementsByTagName("IMG");
for (var i=0;i<imgs.length;i++ ) {
Nav_3D.add(new Item(imgs[i]))
}
Nav_3D.ready();
</script>
</html>
