动态词云图

效果图

 

 

 

html

<div id="hit-words-box"></div>
<script src="js/jquery/jquery.min.js" type="text/javascript" charset="utf-8"></script>
<script src="js/miaov.js" type="text/javascript" charset="utf-8"></script>

css

#hit-words-box {
   position:relative; 
   width:450px; 
   height:450px; 
   margin: 20px 
   auto 0; 
}
#hit-words-box a {
   position:absolute;
   top:0px; left:0px;
   font-family: Microsoft YaHei;
   color: #0b85ff;
   font-weight:bold; 
   text-decoration:none; 
   padding: 3px 6px; 
}

 

js

var radius = 150;//3D 球的半径
var dtr = Math.PI/150;
var d = 600;

let hit_words = ['消防通道','清理垃圾','摆摊','物业费','商铺','噪音','停车场','管道','老年人','遛狗','乱停','漏水','租金','护栏','脏乱','老化','城管','不让摆摊','经济困难','诈骗','骚扰','占道','养老','税务','油烟污染','社保','失业保险','不发工资','做工','找工作','社区纠纷','离婚','斑马线','燃气','施工环境','证件办理','路边停车收费','乱扔垃圾','安全隐患','消防隐患','医疗咨询'];
let colors = ['#38A5FA', '#FFA841', '#E6EA3A', '#FD3424', '#A044F5', '#1A9246', '#fc8452', '#0159DD', '#ea7ccc'];
 
var mcList = [];
var active = true;
var lasta = 1;
var lastb = 1;
var distr = true;
var tspeed = 1;//文字移动速度
var size = 250;
 
var mouseX = 0;
var mouseY = 50;
 
var howElliptical=1;
 
var aA=null;
var oDiv=null;
 
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();
    
    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);
        }
        //���任
        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.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);
}
 
$(document).ready(function(){
    let i=0;
    let oTag=null;
    
    let items = [];
    let num = 0;
    $.each(hit_words,(index,item)=>{
        if(num > colors.length - 1){
            num = 0
        }
        $("#hit-words-box").append( "<a href=#  style='font-size:" + parseInt(hit_words.length  -index) + "px;color:" + colors[num] + "' >" + item + "</a>" );
        num++
    })
    
    oDiv=document.getElementById('hit-words-box');
    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();
    setInterval(update, 30);
});