Emlog非插件实现3D标签云

第一步

module找到你的侧边栏标签 修改侧边栏标签如下

1. <?php
2. //3D标签云
3. function widget_tag($title){
4. global $CACHE;
5. $tag_cache = $CACHE->readCache('tags');?>
6. <div class="side">
7. <h3><i class="fa fa-tags mar-r-4"></i><?php echo $title;?></h3>
8. <div id="tag_cloud_widget">
9. <div class="tagcloud">
10. <script type="text/javascript" src="<?php echo TEMPLATE_URL; ?>js/3dtag.js"></script>
11. <?php foreach($tag_cache as $value): ?>
12. <a href="<?php echo Url::tag($value['tagurl']); ?>" title="<?php echo $value['usenum']; ?> 篇文章"><?php echo $value['tagname']; ?></a>
13. <?php endforeach; ?>
14. <div class="clear"></div></div></div></div>
15. <?php }?>

第二步

你的公用模板css放如下css

1. /*3D标签云*/
2. #tag_cloud_widget{position:relative;width:240px;height:240px;margin:10px auto 10px}
3. #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}
4. #tag_cloud_widget a:hover{background:#d02f53;display:block}
5. #tag_cloud_widget a:nth-child(n){background:#666;border-radius:3px;display:inline-block;line-height:18px;margin:0 10px 15px 0}
6. #tag_cloud_widget a:nth-child(2n){background:#d1a601}
7. #tag_cloud_widget a:nth-child(3n){background:#286c4a}
8. #tag_cloud_widget a:nth-child(5n){background:#518ab2}
9. #tag_cloud_widget a:nth-child(4n){background:#c91d13}

第三步

保存下面js为3dtag.js 放到你的模板js目录里面

1. var radius = 100;
2. var d = 200;
3. var dtr = Math.PI / 180;
4. var mcList = [];
5. var lasta = 1;
6. var lastb = 1;
7. var distr = true;
8. var tspeed = 11;
9. var size = 200;
10. var mouseX = 0;
11. var mouseY = 10;
12. var howElliptical = 1;
13. var aA = null;
14. var oDiv = null;
15. window.onload = function() {
16. var i = 0;
17. var oTag = null;
18. oDiv = document.getElementById('tag_cloud_widget');
19. aA = oDiv.getElementsByTagName('a');
20. for (i = 0; i < aA.length; i++) {
21. oTag = {};
22. aA[i].onmouseover = (function(obj) {
23. return function() {
24. obj.on = true;
25. this.style.zIndex = 9999;
26. this.style.color = '#fff';
27. this.style.background = '#0099ff';
28. this.style.padding = '5px 5px';
29. this.style.filter = "alpha(opacity=100)";
30. this.style.opacity = 1
31. }
32. })(oTag) aA[i].onmouseout = (function(obj) {
33. return function() {
34. obj.on = false;
35. this.style.zIndex = obj.zIndex;
36. this.style.color = '#fff';
37. this.style.background = '#30899B';
38. this.style.padding = '5px';
39. this.style.filter = "alpha(opacity=" + 100 * obj.alpha + ")";
40. this.style.opacity = obj.alpha;
41. this.style.zIndex = obj.zIndex
42. }
43. })(oTag) oTag.offsetWidth = aA[i].offsetWidth;
44. oTag.offsetHeight = aA[i].offsetHeight;
45. mcList.push(oTag)
46. }
47. sineCosine(0, 0, 0);
48. positionAll(); (function() {
49. update();
50. setTimeout(arguments.callee, 40)
51. })()
52. };
53. function update() {
54. var a, b, c = 0;
55. a = (Math.min(Math.max( - mouseY, -size), size) / radius) * tspeed;
56. b = ( - Math.min(Math.max( - mouseX, -size), size) / radius) * tspeed;
57. lasta = a;
58. lastb = b;
59. if (Math.abs(a) <= 0.01 && Math.abs(b) <= 0.01) {
60. return
61. }
62. sineCosine(a, b, c);
63. for (var i = 0; i < mcList.length; i++) {
64. if (mcList[i].on) {
65. continue
66. }
67. var rx1 = mcList[i].cx;
68. var ry1 = mcList[i].cy * ca + mcList[i].cz * ( - sa);
69. var rz1 = mcList[i].cy * sa + mcList[i].cz * ca;
70. var rx2 = rx1 * cb + rz1 * sb;
71. var ry2 = ry1;
72. var rz2 = rx1 * ( - sb) + rz1 * cb;
73. var rx3 = rx2 * cc + ry2 * ( - sc);
74. var ry3 = rx2 * sc + ry2 * cc;
75. var rz3 = rz2;
76. mcList[i].cx = rx3;
77. mcList[i].cy = ry3;
78. mcList[i].cz = rz3;
79. per = d / (d + rz3);
80. mcList[i].x = (howElliptical * rx3 * per) - (howElliptical * 2);
81. mcList[i].y = ry3 * per;
82. mcList[i].scale = per;
83. var alpha = per;
84. alpha = (alpha - 0.6) * (10 / 6);
85. mcList[i].alpha = alpha * alpha * alpha - 0.2;
86. mcList[i].zIndex = Math.ceil(100 - Math.floor(mcList[i].cz))
87. }
88. doPosition()
89. }
90. function depthSort() {
91. var i = 0;
92. var aTmp = [];
93. for (i = 0; i < aA.length; i++) {
94. aTmp.push(aA[i])
95. }
96. aTmp.sort(function(vItem1, vItem2) {
97. if (vItem1.cz > vItem2.cz) {
98. return - 1
99. } else if (vItem1.cz < vItem2.cz) {
100. return 1
101. } else {
102. return 0
103. }
104. });
105. for (i = 0; i < aTmp.length; i++) {
106. aTmp[i].style.zIndex = i
107. }
108. }
109. function positionAll() {
110. var phi = 0;
111. var theta = 0;
112. var max = mcList.length;
113. for (var i = 0; i < max; i++) {
114. if (distr) {
115. phi = Math.acos( - 1 + (2 * (i + 1) - 1) / max);
116. theta = Math.sqrt(max * Math.PI) * phi
117. } else {
118. phi = Math.random() * (Math.PI);
119. theta = Math.random() * (2 * Math.PI)
120. }
121. mcList[i].cx = radius * Math.cos(theta) * Math.sin(phi);
122. mcList[i].cy = radius * Math.sin(theta) * Math.sin(phi);
123. mcList[i].cz = radius * Math.cos(phi);
124. aA[i].style.left = mcList[i].cx + oDiv.offsetWidth / 2 - mcList[i].offsetWidth / 2 + 'px';
125. aA[i].style.top = mcList[i].cy + oDiv.offsetHeight / 2 - mcList[i].offsetHeight / 2 + 'px'
126. }
127. }
128. function doPosition() {
129. var l = oDiv.offsetWidth / 2;
130. var t = oDiv.offsetHeight / 2;
131. for (var i = 0; i < mcList.length; i++) {
132. if (mcList[i].on) {
133. continue
134. }
135. var aAs = aA[i].style;
136. if (mcList[i].alpha > 0.1) {
137. if (aAs.display != '') aAs.display = ''
138. } else {
139. if (aAs.display != 'none') aAs.display = 'none';
140. continue
141. }
142. aAs.left = mcList[i].cx + l - mcList[i].offsetWidth / 2 + 'px';
143. aAs.top = mcList[i].cy + t - mcList[i].offsetHeight / 2 + 'px';
144. aAs.filter = "alpha(opacity=" + 100 * mcList[i].alpha + ")";
145. aAs.zIndex = mcList[i].zIndex;
146. aAs.opacity = mcList[i].alpha
147. }
148. }
149. function sineCosine(a, b, c) {
150. sa = Math.sin(a * dtr);
151. ca = Math.cos(a * dtr);
152. sb = Math.sin(b * dtr);
153. cb = Math.cos(b * dtr);
154. sc = Math.sin(c * dtr);
155. cc = Math.cos(c * dtr)
156. }