jquery 3D球状导航的文章分类

前几天写了左边这个3D球状导航的文章分类，这里对实现细节做个简单记录。

效果：
分类标题呈现3D球状效果，点击分类标题的时候，会弹出这个分类对应的推荐文章列表。
效果截图：

HTML：

<div id="mainList"> 
<div id="list"> 
<ul> 
<li><a class="HTML" onclick="ClickLink(this)" href="#">HTML</a></li> 
<li><a class="CSS" onclick="ClickLink(this)" href="#">CSS</a></li> 
<li><a class="JS" onclick="ClickLink(this)" href="#">JavaScript</a></li> 
<li><a class="AJAX" onclick="ClickLink(this)" href="#">Ajax</a></li> 
<li><a class="ASPNET" onclick="ClickLink(this)" href="#">Asp.net</a></li> 
<li><a class="CSHARP" onclick="ClickLink(this)" href="#">C#</a></li> 
<li><a class="DEBUG" onclick="ClickLink(this)" href="#">Debugging</a></li> 
<li><a class="PERF" onclick="ClickLink(this)" href="#">Performance</a></li> 
<li><a class="ARCHITERT" onclick="ClickLink(this)" href="#">Architect</a></li> 
</ul> 
</div> 

核心JS:动态生成3D球状云+弹出模式窗体-articlemap.js

复制代码代码如下:

$(function() { 
var element = $('#list a'); ; 
var offset = 0; 
var stepping = 0.02; 
var list = $('#list'); 
var $list = $(list) 
$list.mousemove(function(e) { 
var topOfList = $list.eq(0).offset().top 
var listHeight = $list.height() 
stepping = (e.clientY - topOfList) / listHeight * 0.2 - 0.1; 
}); 
for (var i = element.length - 1; i >= 0; i--) { 
element[i].elemAngle = i * Math.PI * 2 / element.length; 
} 
setInterval(render, 50); 
function render() { 
for (var i = element.length - 1; i >= 0; i--) { 
var angle = element[i].elemAngle + offset; 
x = 120 + Math.sin(angle) * 30; 
y = 45 + Math.cos(angle) * 40; 
size = Math.round(15 - Math.sin(angle) * 15); 
var elementCenter = $(element[i]).width() / 2; 
var leftValue = (($list.width() / 2) * x / 100 - elementCenter) + "px" 
$(element[i]).css("fontSize", size + "pt"); 
$(element[i]).css("opacity", size / 100); 
$(element[i]).css("zIndex", size); 
$(element[i]).css("left", leftValue); 
$(element[i]).css("top", y + "%"); 
} 
offset += stepping; 
} 
}); 
function ClickLink(item) { 
var typName = $(item).text(); 
var links = null; 
switch (typName) { 
case "HTML": 
links = TrainLinks(Links.HTML); 
break; 
case "CSS": 
links = TrainLinks(Links.CSS); 
break; 
case "JavaScript": 
links = TrainLinks(Links.JavaScript); 
break; 
case "Ajax": 
links = TrainLinks(Links.Ajax); 
break; 
case "Asp.net": 
links = TrainLinks(Links.Aspnet); 
break; 
case "C#": 
links = TrainLinks(Links.CSharp); 
break; 
case "Debugging": 
links = TrainLinks(Links.Debugging); 
break; 
case "Performance": 
links = TrainLinks(Links.Performance); 
break; 
case "Architect": 
links = TrainLinks(Links.Architect); 
break; 
} 
CommonHelper.showNoBtnAlert(typName, links); 
} 
function TrainLinks(arr) { 
var links = "这个可以有，暂时还没有！"; 
if (arr.length > 0) { 
links = '<div><ul>'; 
} 
for (i = 0, j = arr.length; i < j; i++) { 
links += '<li><a target="_blank" href="' + arr[i][0] + '">' + arr[i][1] + '</a></li>'; 
} 
if (arr.length > 0) { 
links += '</ul></div>'; 
} 
return links; 
} 

辅助存储推荐文章列表的JS（未来通过修改这个文件来维护推荐文章）:

复制代码代码如下:

var Links = { 
HTML: [], 
CSS: [["http://www.cnblogs.com/justinw/archive/2010/06/16/1758922.html", "制作50个超棒动画效果教程"]], 
JavaScript: [ 
["http://www.cnblogs.com/justinw/archive/2009/11/27/1611728.html", "[原创]AjaxControlToolkitTests自动测试框架完全解析之一：架构篇 "], 
["http://www.cnblogs.com/justinw/archive/2009/11/30/1613391.html", "[原创]AjaxControlToolkitTests自动测试框架完全解析之二：实现篇(1) "], 
["http://www.cnblogs.com/justinw/archive/2009/12/02/1615382.html", "[JavaScript] 使用document.createDocumentFragment优化性能 "], 
], 
Ajax: [], 
Aspnet: [], 
CSharp: [], 
...... 
Performance: [ 
["http://www.cnblogs.com/justinw/archive/2009/11/26/1611397.html", "[推荐]前端性能分析工具：dynaTrace Ajax Edition"] 
] 
} 