js 风向标，鼠标移上去可停

var radius = 80;
var dtr = Math.PI / 180;
var d = 300;

var mcList = [];
var active =true;
var lasta = 1;
var lastb = 1;
var distr = true;
var tspeed = 0.5;
var size = 150;

var mouseX =0;
var mouseY = -120;

var howElliptical = 1;

var aA = null;
var oDiv = null;
var num = 0;

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 = false;
    };

    oDiv.onmouseout=function ()
    {
        active = true;
    };
    
    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 * 0.70;
        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();
    num++;
}

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);
}

    <div id="div1" class="bodd_tnone">
@foreach(var m in Model)
{
   <a href="@(GlobalConfig.SearchDomain)product?kw=@(Server.UrlEncode(m.keywordName))" target="_blank">@m.keywordName</a>
}</div>