Emlog非插件实现3D标签云

emlog教程 2020-08-25

  module找到你的侧边栏标签 修改侧边栏标签如下

  

  //3D标签

  function widget_tag($title){

  global $CACHE;

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

  

  

  

  

  

  

  ” title=” 篇文章”>

  

  

  

  你的公用模板css放如下css

  #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}

  保存下面js为3dtag.js 放到你的模板js目录里面

  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

  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)

  return

  }

  sineCosine(a, b, c);

  for (var i = 0; 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

  aTmp.push(aA[i])

  }

  aTmp.sort(function(vItem1, vItem2) {

  if (vItem1.cz > vItem2.cz) {

  return – 1

  } else if (vItem1.cz

  return 1

  } else {

  return 0

  }

  });

  for (i = 0; i

  aTmp[i].style.zIndex = i

  }

  }

  function positionAll() {

  var phi = 0;

  var theta = 0;

  var max = mcList.length;

  for (var i = 0; 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

  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)

  }

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