这个是怎么实现的..? 高手进

  http://mitworld.mit.edu/explorer  这个东东是咋实现的...? 求高手指点 感激不尽....

解决方案 »

  1.   


    恩 我看了 确实是个flash  jq 有类似的插件吗? 
      

  2.   

    参考下这个
    http://blog.xlune.com/2009/09/vgrid/demo007.html
      

  3.   


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ru">
    <head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html;charset=gb2312" />
    <script src="http://code.jquery.com/jquery.min.js" type="text/javascript"></script>
    <style type="text/css">
    .canvas{
        width:500px;
        height:500px;
        position:relative;
    }
    </style>
    </head>
    <body>
    <div class="canvas" id="canvas"></div>
    <script type="text/javascript">
    //http://mitworld.mit.edu/explorer
    /*
    *坠落效果
    */
    function Falling(){
        this.dict=["abcd","2222","sign","next","container","content","last","break","less","than","that","absolute","relative","my","index","html","java","c#","web","javascript","php","include","shit","bull","big","smart","call","apply","callee","caller","function"];
        this.canvas=$("#canvas");
        this.step=15;
        this.freq=10;
        this.height=500;
        this.width=500;
    }
    Falling.prototype={
        fallingAction:function(dom){
            var self=this;
            var freqs=[10,15,20];//每次下落的距离
            var disS=[];//记录所有dom的当前距离
            var disPerFreqS=[];//每个dom的
            var targetDis=500;
            var domCssTopS=[];//所有dom的top属性
            var successDom=[];//记录哪些dom已经结束运动
            var successCount=0;//有多少个dom已经结束
            var total=dom.length;
            var freqMarkLength=freqs.length;
            for(var i=0,j=dom.length;i<j;i++){
                domCssTopS[i]=dom[i].position().top;
                disS[i]=0;
                disPerFreqS[i]=freqs[parseInt(Math.random()*freqMarkLength)];
            }
            var si=setInterval(function(){
                if(successCount>=total){
                    clearInterval(si);
                }
                for(var i=0,j=dom.length;i<j;i++){
                    if(typeof(successDom[i])!="undefined" && successDom[i]=="ok"){
                        continue;
                    }
                    disS[i] += disPerFreqS[i];
                    if(disS[i] >= targetDis){
                        dom[i].css("top", targetDis+domCssTopS[i]);
                        successDom[i]="ok";
                        successCount++;;
                    }else{
                        dom[i].css("top", disS[i]+domCssTopS[i]);
                    }
                }
            },self.freq);
        },
        init:function(){
            var self=this;
            var dom=[];
            var l=0;
            var t=0;
            var tempDom=$("<div style='position;absolute;left:-100000;visibility:hidden'></div>").appendTo($("body"));
            for(var i=0,j=self.dict.length;i<j;i++){
                dom[i]=$("<span style='position:absolute'>"+self.dict[i]+"</span>").appendTo(tempDom);
                var domWidth=dom[i].width();
                var domHeight=dom[i].height();
                if(t<self.height){
                    if(l<self.width){
                        if(domWidth+l<=self.width){
                            dom[i].css({"top":t,"left":l});
                            self.canvas.append(dom[i]);
                            l += dom[i].width();
                        }else{
                            if(domHeight+t<=self.height){
                                t=t+domHeight;
                                dom[i].css({"top":t,"left":0});
                                self.canvas.append(dom[i]);
                                l = dom[i].width();
                            }else{
                                break;//到极限了
                            }
                        }
                    }else{
                            if(domHeight+t<=self.height){
                                t=t+domHeight;
                                l=0;
                                dom[i].css({"top":t,"left":l});
                                self.canvas.append(dom[i]);
                            }else{
                                break;//到极限了
                            }
                    }
                }//else极限
            }
            /*
            for(var i=0,l=self.dict.length;i<l;i++){
                self.fallingAction(dom[i]);
            }
            */
            self.fallingAction(dom);
        }
    }
    var falling=new Falling();
    falling.init();
    </script>
    </body>
    </html>
      

  4.   

    顶5楼  最近比较忙 好久没上csdn了 我后来写成球型了  放出来 跟大家分享下...
      

  5.   


    var radius = 200;
    var dtr = Math.PI/180;
    var d=300;var mcList = [];
    var active = false;
    var lasta = 1;
    var lastb = 1;
    var distr = true;
    var tspeed=10;
    var size=250;var mouseX=0;
    var mouseY=0;var howElliptical=1;var aA=null;
    var oDiv=null;window.onload=function ()
    {
    var i=0;
    var oTag=null;

    oDiv=document.getElementById('div1');

    aA=oDiv.getElementsByTagName('a');

    for(i=0;i<aA.length;i++)
    {
    oTag={};

    oTag.offsetWidth=aA[i].offsetWidth;
    oTag.offsetHeight=aA[i].offsetHeight;

    mcList.push(oTag);
    }

    sineCosine( 0,0,0 );

    positionAll();

    oDiv.onmouseover=function ()
    {
    active=true;
    };

    oDiv.onmouseout=function ()
    {
    active=false;
    };

    oDiv.onmousemove=function (ev)
    {
    var oEvent=window.event || ev;

    mouseX=oEvent.clientX-(oDiv.offsetLeft+oDiv.offsetWidth/2);
    mouseY=oEvent.clientY-(oDiv.offsetTop+oDiv.offsetHeight/2);

    mouseX/=5;
    mouseY/=5;
    };

    setInterval(update, 30);
    };function update()
    {
    var a;
    var b;

    if(active)
    {
    a = (-Math.min( Math.max( -mouseY, -size ), size ) / radius ) * tspeed;
    b = (Math.min( Math.max( -mouseX, -size ), size ) / radius ) * tspeed;
    }
    else
    {
    a = lasta * 0.98;
    b = lastb * 0.98;
    }

    lasta=a;
    lastb=b;

    if(Math.abs(a)<=0.01 && Math.abs(b)<=0.01)
    {
    return;
    }

    var c=0;
    sineCosine(a,b,c);
    for(var j=0;j<mcList.length;j++)
    {
    var rx1=mcList[j].cx;
    var ry1=mcList[j].cy*ca+mcList[j].cz*(-sa);
    var rz1=mcList[j].cy*sa+mcList[j].cz*ca;

    var rx2=rx1*cb+rz1*sb;
    var ry2=ry1;
    var rz2=rx1*(-sb)+rz1*cb;

    var rx3=rx2*cc+ry2*(-sc);
    var ry3=rx2*sc+ry2*cc;
    var rz3=rz2;

    mcList[j].cx=rx3;
    mcList[j].cy=ry3;
    mcList[j].cz=rz3;

    per=d/(d+rz3);

    mcList[j].x=(howElliptical*rx3*per)-(howElliptical*2);
    mcList[j].y=ry3*per;
    mcList[j].scale=per;
    mcList[j].alpha=per;

    mcList[j].alpha=(mcList[j].alpha-0.6)*(10/6);
    }

    doPosition();
    depthSort();
    }function depthSort()
    {
    var i=0;
    var aTmp=[];

    for(i=0;i<aA.length;i++)
    {
    aTmp.push(aA[i]);
    }

    aTmp.sort
    (
    function (vItem1, vItem2)
    {
    if(vItem1.cz>vItem2.cz)
    {
    return -1;
    }
    else if(vItem1.cz<vItem2.cz)
    {
    return 1;
    }
    else
    {
    return 0;
    }
    }
    );

    for(i=0;i<aTmp.length;i++)
    {
    aTmp[i].style.zIndex=i;
    }
    }function positionAll()
    {
    var phi=0;
    var theta=0;
    var max=mcList.length;
    var i=0;

    var aTmp=[];
    var oFragment=document.createDocumentFragment();

    //随机排序
    for(i=0;i<aA.length;i++)
    {
    aTmp.push(aA[i]);
    }

    aTmp.sort
    (
    function ()
    {
    return Math.random()<0.5?1:-1;
    }
    );

    for(i=0;i<aTmp.length;i++)
    {
    oFragment.appendChild(aTmp[i]);
    }

    oDiv.appendChild(oFragment);

    for( var i=1; i<max+1; i++){
    if( distr )
    {
    phi = Math.acos(-1+(2*i-1)/max);
    theta = Math.sqrt(max*Math.PI)*phi;
    }
    else
    {
    phi = Math.random()*(Math.PI);
    theta = Math.random()*(2*Math.PI);
    }
    //坐标变换
    mcList[i-1].cx = radius * Math.cos(theta)*Math.sin(phi);
    mcList[i-1].cy = radius * Math.sin(theta)*Math.sin(phi);
    mcList[i-1].cz = radius * Math.cos(phi);

    aA[i-1].style.left=mcList[i-1].cx+oDiv.offsetWidth/2-mcList[i-1].offsetWidth/2+'px';
    aA[i-1].style.top=mcList[i-1].cy+oDiv.offsetHeight/2-mcList[i-1].offsetHeight/2+'px';
    }
    }function doPosition()
    {
    var l=oDiv.offsetWidth/2;
    var t=oDiv.offsetHeight/2;
    for(var i=0;i<mcList.length;i++)
    {
    aA[i].style.left=mcList[i].cx+l-mcList[i].offsetWidth/2+'px';
    aA[i].style.top=mcList[i].cy+t-mcList[i].offsetHeight/2+'px';

    aA[i].style.fontSize=Math.ceil(12*mcList[i].scale/2)+8+'px';

    aA[i].style.filter="alpha(opacity="+100*mcList[i].alpha+")";
    aA[i].style.opacity=mcList[i].alpha;
    }
    }function sineCosine( a, b, c)
    {
    sa = Math.sin(a * dtr);
    ca = Math.cos(a * dtr);
    sb = Math.sin(b * dtr);
    cb = Math.cos(b * dtr);
    sc = Math.sin(c * dtr);
    cc = Math.cos(c * dtr);
    }
      

  6.   


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>无标题文档</title>
    <script type="text/javascript" src="miaov.js"></script>
    <style>
    #div1 {position:relative; width:1000px; height:520px; margin: 20px auto 0; background-color:#DFD8CA }
    #div1 a {position:absolute; top:300px; left:0px; font-family: Microsoft YaHei; color:#fff; font-weight:bold; text-decoration:none; padding: 3px 6px; }
    #div1 a:hover {border: 1px solid #eee; background: #000; }
    #div1 .blue {color:#F9F7F2;}
    #div1 .red {color:#F9F7F2;}
    #div1 .yellow {color:#F9F7F2;}
    </style>
    </head><body><div id="div1">
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
        <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    <a href="http://www.csdn.net" class="yellow>csdn</a>
    <a href="http://www.baidu.com" class="red">百度</a>
    <a href="http://www.google.com/" class="blue">谷歌</a>
    </div></body>
    </html>