php 彩色标签插件,emlog彩色3D标签云 - 非插件

emlog彩色3D标签云 - 非插件

刘振兴

Emlog相关

2015年10月02日

11689

5条评论

刚才在emlog模板中心有款新出的模板，进入了作者的主页，看上了它那个侧边上的3D标签云，看上去还是很不错的，就给扒了下来

本人菜鸟一枚，各位大大请轻喷，下面是使用上的效果，也可以看我的侧边，已经启用的

是不是看上去还不错，下面来讲下实现过程

首先是css样式部分

/*标签云*/

#tag_cloud_widget{position:relative;width:240px;height:240px;margin:10px auto 10px}

#tag_cloud_widget a{position:absolute;color:#fff;text-align:center;text-overflow:ellipsis;white-space:nowrap;top:0;left:0;padding:3px 5px;border:0}

#tag_cloud_widget a:hover{background:#d02f53;display:block}

#tag_cloud_widget a:nth-child(n){background:#666;border-radius:3px;display:inline-block;line-height:18px;margin:0 10px 15px 0}

#tag_cloud_widget a:nth-child(2n){background:#d1a601}

#tag_cloud_widget a:nth-child(3n){background:#286c4a}

#tag_cloud_widget a:nth-child(5n){background:#518ab2}

#tag_cloud_widget a:nth-child(4n){background:#c91d13}

然后是js部分

var radius = 100;

var d = 200;

var dtr = Math.PI / 180;

var mcList = [];

var lasta = 1;

var lastb = 1;

var distr = true;

var tspeed = 11;

var size = 200;

var mouseX = 0;

var mouseY = 10;

var howElliptical = 1;

var aA = null;

var oDiv = null;

window.onload = function() {

var i = 0;

var oTag = null;

oDiv = document.getElementById('tag_cloud_widget');

aA = oDiv.getElementsByTagName('a');

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

oTag = {};

aA[i].onmouseover = (function(obj) {

return function() {

obj.on = true;

this.style.zIndex = 9999;

this.style.color = '#fff';

this.style.background = '#0099ff';

this.style.padding = '5px 5px';

this.style.filter = "alpha(opacity=100)";

this.style.opacity = 1

}

})(oTag) aA[i].onmouseout = (function(obj) {

return function() {

obj.on = false;

this.style.zIndex = obj.zIndex;

this.style.color = '#fff';

this.style.background = '#30899B';

this.style.padding = '5px';

this.style.filter = "alpha(opacity=" + 100 * obj.alpha + ")";

this.style.opacity = obj.alpha;

this.style.zIndex = obj.zIndex

}

})(oTag) oTag.offsetWidth = aA[i].offsetWidth;

oTag.offsetHeight = aA[i].offsetHeight;

mcList.push(oTag)

}

sineCosine(0, 0, 0);

positionAll(); (function() {

update();

setTimeout(arguments.callee, 40)

})()

};

function update() {

var a, b, c = 0;

a = (Math.min(Math.max( - mouseY, -size), size) / radius) * tspeed;

b = ( - Math.min(Math.max( - mouseX, -size), size) / radius) * tspeed;

lasta = a;

lastb = b;

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

return

}

sineCosine(a, b, c);

for (var i = 0; i < mcList.length; i++) {

if (mcList[i].on) {

continue

}

var rx1 = mcList[i].cx;

var ry1 = mcList[i].cy * ca + mcList[i].cz * ( - sa);

var rz1 = mcList[i].cy * sa + mcList[i].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[i].cx = rx3;

mcList[i].cy = ry3;

mcList[i].cz = rz3;

per = d / (d + rz3);

mcList[i].x = (howElliptical * rx3 * per) - (howElliptical * 2);

mcList[i].y = ry3 * per;

mcList[i].scale = per;

var alpha = per;

alpha = (alpha - 0.6) * (10 / 6);

mcList[i].alpha = alpha * alpha * alpha - 0.2;

mcList[i].zIndex = Math.ceil(100 - Math.floor(mcList[i].cz))

}

doPosition()

}

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;

for (var i = 0; i < max; i++) {

if (distr) {

phi = Math.acos( - 1 + (2 * (i + 1) - 1) / max);

theta = Math.sqrt(max * Math.PI) * phi

} else {

phi = Math.random() * (Math.PI);

theta = Math.random() * (2 * Math.PI)

}

mcList[i].cx = radius * Math.cos(theta) * Math.sin(phi);

mcList[i].cy = radius * Math.sin(theta) * Math.sin(phi);

mcList[i].cz = radius * Math.cos(phi);

aA[i].style.left = mcList[i].cx + oDiv.offsetWidth / 2 - mcList[i].offsetWidth / 2 + 'px';

aA[i].style.top = mcList[i].cy + oDiv.offsetHeight / 2 - mcList[i].offsetHeight / 2 + 'px'

}

}

function doPosition() {

var l = oDiv.offsetWidth / 2;

var t = oDiv.offsetHeight / 2;

for (var i = 0; i < mcList.length; i++) {

if (mcList[i].on) {

continue

}

var aAs = aA[i].style;

if (mcList[i].alpha > 0.1) {

if (aAs.display != '') aAs.display = ''

} else {

if (aAs.display != 'none') aAs.display = 'none';

continue

}

aAs.left = mcList[i].cx + l - mcList[i].offsetWidth / 2 + 'px';

aAs.top = mcList[i].cy + t - mcList[i].offsetHeight / 2 + 'px';

aAs.filter = "alpha(opacity=" + 100 * mcList[i].alpha + ")";

aAs.zIndex = mcList[i].zIndex;

aAs.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)

}

下面是php部分，修改module里的侧边标签方法

//3D标签云

function widget_tag($title){

global $CACHE;

$tag_cache = $CACHE->readCache('tags');?>

php函数可能和大家的有些不同，更具情况修改就行了，有什么问题可以QQ联系我，如果你最基础的都不会，那就别联系我了，先去看看教程

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