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图片相册JavaScript效果

2012年05月29日 ⁄ 综合 ⁄ 共 6971字 ⁄ 字号 评论关闭

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title></title>
<style type="text/css">

//光之翼 www.hi.baidu.com/jcomet
html {
   overflow: hidden;
}
body {
   position: absolute;
   margin: 0px;
   padding: 0px;
   background: #111;
   width: 100%;
   height: 100%;
}
#screen {
   position: absolute;
   left: 10%;
   top: 10%;
   width: 80%;
   height: 80%;
   background: #000;
}
#screen img {
   position: absolute;
   cursor: pointer;
   visibility: hidden;
   width: 0px;
   height: 0px;
}
#screen .tvover {
   border: solid #876;
   opacity: 1;
   filter: alpha(opacity=100);
}
#screen .tvout {
   border: solid #fff;
   opacity: 0.7;
}
#bankImages {
   display: none;
}
</style>
<script type="text/javascript">
var Library = {};
Library.ease = function () {
this.target = 0;
this.position = 0;
this.move = function (target, speed)
{
   this.position += (target - this.position) * speed;
}
}
var tv = {
O : [],
screen : {},
grid : {
   size       : 4,
   borderSize : 6,
   zoomed     : false
},
angle : {
   x : new Library.ease(),
   y : new Library.ease()
},
camera : {
   x    : new Library.ease(),
   y    : new Library.ease(),
   zoom : new Library.ease(),
   focalLength : 750
},
init : function ()
{
   this.screen.obj = document.getElementById('screen');
   var img = document.getElementById('bankImages').getElementsByTagName('img');
   this.screen.obj.onselectstart = function () { return false; }
   this.screen.obj.ondrag        = function () { return false; }
   var ni = 0;
   var n = (tv.grid.size / 2) - .5;
   for (var y = -n; y <= n; y++)
   {
    for (var x = -n; x <= n; x++)
    {
     var o = document.createElement('img');
     var i = img[(ni++) % img.length];
     o.className = 'tvout';
     o.src = i.src;
     tv.screen.obj.appendChild(o);
     o.point3D = {
      x : x,
      y : y,
      z : new Library.ease()
     };
     o.point2D = {};
     o.ratioImage = 1;
     tv.O.push(o);
     o.onmouseover = function ()
     {
      if (!tv.grid.zoomed)
      {
       if (tv.o)
       {
        tv.o.point3D.z.target = 0;
        tv.o.className = 'tvout';
       }
       this.className = 'tvover';
       this.point3D.z.target = -.5;
       tv.o = this;
      }
     }
     o.onclick = function ()
     {
      if (!tv.grid.zoomed)
      {
       tv.camera.x.target = this.point3D.x;
       tv.camera.y.target = this.point3D.y;
       tv.camera.zoom.target = tv.screen.w * 1.25;
       tv.grid.zoomed = this;
      } else {
       if (this == tv.grid.zoomed){
        tv.camera.x.target = 0;
        tv.camera.y.target = 0;
        tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);
        tv.grid.zoomed = false;
       }
      }
     }
     o.calc = function ()
     {
      this.point3D.z.move(this.point3D.z.target, .5);
      var x = (this.point3D.x - tv.camera.x.position) * tv.camera.zoom.position;
      var y = (this.point3D.y - tv.camera.y.position) * tv.camera.zoom.position;
      var z = this.point3D.z.position * tv.camera.zoom.position;
      var xy = tv.angle.cx * y - tv.angle.sx * z;
      var xz = tv.angle.sx * y + tv.angle.cx * z;
      var yz = tv.angle.cy * xz - tv.angle.sy * x;
      var yx = tv.angle.sy * xz + tv.angle.cy * x;
      this.point2D.scale = tv.camera.focalLength / (tv.camera.focalLength + yz);
      this.point2D.x = yx * this.point2D.scale;
      this.point2D.y = xy * this.point2D.scale;
      this.point2D.w = Math.round(
                        Math.max(
                          0,
                          this.point2D.scale * tv.camera.zoom.position * .8
                        )
                      );
      if (this.ratioImage > 1)
       this.point2D.h = Math.round(this.point2D.w / this.ratioImage);
      else
      {
       this.point2D.h = this.point2D.w;
       this.point2D.w = Math.round(this.point2D.h * this.ratioImage);
      }
     }
     o.draw = function ()
     {
      if (this.complete)
      {
       if (!this.loaded)
       {
        if (!this.img)
        {
         this.img = new Image();
         this.img.src = this.src;
        }
        if (this.img.complete)
        {
         this.style.visibility = 'visible';
         this.ratioImage = this.img.width / this.img.height;
         this.loaded = true;
         this.img = false;
        }
       }
       this.style.left = Math.round(
                          this.point2D.x * this.point2D.scale +
                          tv.screen.w - this.point2D.w * .5
                        ) + 'px';
       this.style.top = Math.round(
                          this.point2D.y * this.point2D.scale +
                          tv.screen.h - this.point2D.h * .5
                        ) + 'px';
       this.style.width = this.point2D.w + 'px';
       this.style.height = this.point2D.h + 'px';
       this.style.borderWidth = Math.round(
                                 Math.max(
                                   this.point2D.w,
                                   this.point2D.h
                                 ) * tv.grid.borderSize * .01
                               ) + 'px';
       this.style.zIndex = Math.floor(this.point2D.scale * 100);
      }
     }
    }
   }
   tv.resize();
   mouse.y = tv.screen.y + tv.screen.h;
   mouse.x = tv.screen.x + tv.screen.w;
   tv.run();
},
resize : function ()
{
   var o = tv.screen.obj;
   tv.screen.w = o.offsetWidth / 2;
   tv.screen.h = o.offsetHeight / 2;
   tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);
   for (tv.screen.x = 0, tv.screen.y = 0; o != null; o = o.offsetParent)
   {
    tv.screen.x += o.offsetLeft;
    tv.screen.y += o.offsetTop;
   }
},
run : function ()
{
   tv.angle.x.move(-(mouse.y - tv.screen.h - tv.screen.y) * .0025, .1);
   tv.angle.y.move( (mouse.x - tv.screen.w - tv.screen.x) * .0025, .1);
   tv.camera.x.move(tv.camera.x.target, tv.grid.zoomed ? .25 : .025);
   tv.camera.y.move(tv.camera.y.target, tv.grid.zoomed ? .25 : .025);
   tv.camera.zoom.move(tv.camera.zoom.target, .05);
   tv.angle.cx = Math.cos(tv.angle.x.position);
   tv.angle.sx = Math.sin(tv.angle.x.position);
   tv.angle.cy = Math.cos(tv.angle.y.position);
   tv.angle.sy = Math.sin(tv.angle.y.position);
   for (var i = 0, o; o = tv.O[i]; i++)
   {
    o.calc();
    o.draw();
   }
   setTimeout(tv.run, 32);
}
}
var mouse = {
x : 0,
y : 0
}
document.onmousemove = function(e)
{
if (window.event) e = window.event;
mouse.x = e.clientX;
mouse.y = e.clientY;
return false;
}
</script>
</head>
<body>
<div id="screen"></div>
<div id="bankImages">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741181035801.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741183375921.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741184993505.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185038473.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185117345.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185166937.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185221625.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185296017.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185481737.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200741185777873.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
<img alt="" src="http://www.sg803.com/UploadFile/pic/picbig/200742961603953.jpg">
</div>
<script type="text/javascript">
onresize = tv.resize;
tv.init();
</script>
</body>
</html>

 

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