一分鍾教你在博客園中制作自己的動態雲球形標簽頁

　　經常看到別人的博客里面有動態的雲標簽頁，感覺很是高大上，自己也很像弄一個。於是去找尋源碼，在阿里西西頁面特效中找到了雲標簽的源碼，經過分析和解剖，弄成了符合博客園的js.

　　首先，找到博客園頁面的管理界面，

　　在其中加入以下代碼：

<style type="text/css">
#div1 {position:relative; width:200px; height:150px; margin: 2px auto 0; }
#div1 a {position:absolute; top:0px; left:0px; font-family: Microsoft YaHei; color:#fff; font-weight:bold; text-decoration:none; padding: 1px 2px; }
#div1 a:hover {border: 1px solid #eee; background: #000; }
#div1 .blue {color:blue;}
#div1 .red {color:red;}
#div1 .yellow {color:yellow;}
#div1 .green {color:green;}


</style>

<script type="text/javascript">
var radius = 60;
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=200;

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();
    
    //隨機排序
    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);
        }
        //坐標變換
        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);
}
</script>

<font face="Comic Sans MS"><strong><a href="http://weibo.com/u/3209909971/home?wvr=5&lf=reg">我的標簽</a>
</strong></font><hr />
<div id="div1">
    <a href="http://www.cnblogs.com/xing901022/p/3694709.html"class="blue">2014</a>
    <a href="http://www.cnblogs.com/xing901022/p/3248913.html"class="red">2013下</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2013/01/18/2857982.html" class="red">2013上</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2012/10/19/2699162.html" class="red">2012下</a>
    <a href="http://zh.linuxvirtualserver.org/" class="green">LVS中文</a>
    <a href="http://code.taobao.org/" class="green">開源</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2013/04/09/3248870.html" class="blue">反向代理</a>
    <a href="http://www.cnblogs.com/xing901022/p/3248469.html" class="blue">CUDA</a>
</div>

代碼分析

　　以上源碼，就可以直接在你的博客園ID上面顯示雲標簽了

　　那么我們分析以下，上面的代碼：

　　這個部分的代碼，應該是直接嵌入到body里面的，所以引用的css js都要加入標簽，下面是css的代碼：

<style type="text/css">
#div1 {position:relative; width:200px; height:150px; margin: 2px auto 0; }
#div1 a {position:absolute; top:0px; left:0px; font-family: Microsoft YaHei; color:#fff; font-weight:bold; text-decoration:none; padding: 1px 2px; }
#div1 a:hover {border: 1px solid #eee; background: #000; }
#div1 .blue {color:blue;}
#div1 .red {color:red;}
#div1 .yellow {color:yellow;}
#div1 .green {color:green;}
</style>

　　這里面的div是我們下面將要用到的標簽內容div的id，通過這個id就可以引用到這里面的樣式。

　　上面最重要的一個參數

#div1 {position:relative; width:200px; height:150px; margin: 2px auto 0; }

　　這段代碼定義了雲標簽插件div的寬度和高度，調整適當的像素值，適應你的博客即可。

　　下面是js的代碼，radius定義了雲標簽的半徑，可以通過設置該值，調整雲標簽的旋轉半徑，也就是球形的大小

<script type="text/javascript">
var radius = 60;
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=200;

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();
    
    //隨機排序
    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);
        }
        //坐標變換
        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);
}
</script>

　　最后添加自己的雲標簽內容，即可，后面的class會調用上面css定義的樣式，如果沒有自己喜歡的顏色或者樣式，自己定義就行了。

<div id="div1">
    <a href="http://www.cnblogs.com/xing901022/p/3694709.html"class="blue">2014</a>
    <a href="http://www.cnblogs.com/xing901022/p/3248913.html"class="red">2013下</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2013/01/18/2857982.html" class="red">2013上</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2012/10/19/2699162.html" class="red">2012下</a>
    <a href="http://zh.linuxvirtualserver.org/" class="green">LVS中文</a>
    <a href="http://code.taobao.org/" class="green">開源</a>
    <a href="http://www.cnblogs.com/xing901022/archive/2013/04/09/3248870.html" class="blue">反向代理</a>
    <a href="http://www.cnblogs.com/xing901022/p/3248469.html" class="blue">CUDA</a>
</div>

祝您的博客越來越漂亮。