一分钟教你在博客园中制作自己的动态云球形标签页

2019独角兽企业重金招聘Python工程师标准>>>

　　经常看到别人的博客里面有动态的云标签页，感觉很是高大上，自己也很像弄一个。于是去找寻源码，在阿里西西页面特效中找到了云标签的源码，经过分析和解剖，弄成了符合博客园的js.

　　首先，找到博客园页面的管理界面，

　　在其中加入以下代码：

<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();//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);
}
</script><font face="Comic Sans MS"><strong><a href="http://weibo.com/u/3209909971/home?wvr=5&lf=reg">我的标签</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">开源</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>

代码分析

　　以上源码，就可以直接在你的博客园ID上面显示云标签了

　　那么我们分析以下，上面的代码：

　　这个部分的代码，应该是直接嵌入到body里面的，所以引用的css js都要加入标签，下面是css的代码：

<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>

　　这里面的div是我们下面将要用到的标签内容div的id，通过这个id就可以引用到这里面的样式。

　　上面最重要的一个参数

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

　　这段代码定义了云标签插件div的宽度和高度，调整适当的像素值，适应你的博客即可。

　　下面是js的代码，radius定义了云标签的半径，可以通过设置该值，调整云标签的旋转半径，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();//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);
}
</script>

　　最后添加自己的云标签内容，即可，后面的class会调用上面css定义的样式，如果没有自己喜欢的颜色或者样式，自己定义就行了。

<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">开源</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>

祝您的博客越来越漂亮。

转载于:https://my.oschina.net/u/204616/blog/545073