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教程开始:
首先是 css 样式部分
- /*
- *3D 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,新建 3dtag.js 放在当前模板 js 目录下
- 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)
- }
最关键的 module.php 在合适的地方插入
- <?php
- //3D 标签云
- function widget_3dtag(){
- global $CACHE;
- $tag_cache = $CACHE->readCache('tags');?>
- <div id="tag_cloud_widget">
- <script type="text/javascript" src="<?php echo TEMPLATE_URL; ?>js/3dtag.js"></script>
- <?php foreach($tag_cache as $value): ?>
- <a href="< php echo Url::tag($value['tagurl']); >" title="< php echo $value['usenum']; > 篇文章">< php echo $value['tagname']; ></a>
- < php endforeach; >
- </div>
- < php }?>
调用格式:
- <?php echo widget_3dtag();?>
自行添加在侧边栏
例如:emlog 大前端,添加 css 与 js 后。
module.php 添加功能
side.php 在用户中心后添加下面代码
- <div class="widget widget_ui_tags"><span class="icon"><i class="fa fa-tag"></i></span><h3>3D 标签云</h3>
- <?php echo widget_3dtag('');?>
- </div>
php 函数可能和大家的有些不同,根据情况修改就行了。