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Vue中實現3D標籤雲的詳細程式碼

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Vue中實現3D標籤雲的詳細程式碼

程式碼:
頁面部分:

<template>
  <div class="tagcloud-all"
       ref="tagcloudall">
    <a v-for="item in tagList" :href="item.url" rel="external nofollow"  :style="'color:' + item.color + ';top: 0;left: 0;filter:none;'">{{item.name}}</a>
  </div>
</template>

部分:

// 標籤雲
.tagcloud-all {
  position: relative;
  a {
    position: absolute;
    top: 0px;
    left: 0px;
    color: #fff;
    font-weight: bold;
    text-decoration: none;
    padding: 3px 6px;
    &:hover {
      color: #FF0000;
      letter-spacing: 2px;
    }
  }
}

部分:

export default {
  name: "tagcloud",data() {
    return {
      tagList: [],radius: 120,dtr: Math.PI / 180,d: 300,mcList: [],active: false,lasta: 1,lastb: 1,distr: true,tspeed: 10,size: 250,mouseX: 0,mouseY: 0,howElliptical: 1,oList: null,oA: null,sa: 0,ca: 0,sb: 0,cb: 0,sc: 0,cc: 0
    }
  },methods: {
    // 生成隨機數
    getRandomNum() {
      return Math.floor(Math.random() * (255 + 1));
    },// 三角函式角度計算
    sineCosine(a,b,c) {
      this.sa = Math.sin(a * this.dtr);
      this.ca = Math.cos(a * this.dtr);
      this.sb = Math.sin(b * this.dtr);
      this.cb = Math.cos(b * this.dtr);
      this.sc = Math.sin(c * this.dtr);
      this.cc = Math.cos(c * this.dtr);
    },// 設定初始定位
    positionAll() {
      this.$nextTick(() => {      //
注意: 所有的在onReady方法中執行的方法都需要$nextTick確保所有的標籤都已經渲染 var phi = 0; var theta = 0; var max = this.mcList.length; var aTmp = []; var oFragment = document.createDocumentFragment(); // 隨機排序 for (let i = 0; i < this.tagList.length; i++) { aTmp.push(this.oA[i]); } aTmp.sort(() => { return Math.random() < 0.5 ? 1 : -1; }); for (let i = 0; i < aTmp.length; i++) { oFragment.appendChild(aTmp[i]); } this.oList.appendChild(oFragment); for (let i = 1; i < max + 1; i++) { if (this.distr) { phi = Math.acos(-1 + (2 * i - 1) / max); theta = Math.sqrt(max * Math.PI) * phi; } else { phi = Math.random() * (Math.PI); theta = Math.random() * (2 * Math.PI); } // 座標變換 this.mcList[i - 1].cx = this.radius * Math.cos(theta) * Math.sin(phi); this.mcList[i - 1].cy = this.radius * Math.sin(theta) * Math.sin(phi); this.mcList[i - 1].cz = this.radius * Math.cos(phi); this.oA[i - 1].style.left = this.mcList[i - 1].cx + this.oList.offsetWidth / 2 - this.mcList[i - 1].offsetWidth / 2 + 'px'; this.oA[i - 1].style.top = this.mcList[i - 1].cy + this.oList.offsetHeight / 2 - this.mcList[i - 1].offsetHeight / 2 + 'px'; } }) },// 座標更新 讓標籤動起來 update() { this.$nextTick(() => { // 注意: 所有的在onReady方法中執行的方法都需要$nextTick確保所有的標籤都已經渲染 var a; var b; if (this.active) { a = (-Math.min(Math.max(-this.mouseY,-this.size),this.size) / this.radius) * this.tspeed; b = (Math.min(Math.max(-this.mouseX,this.size) / this.radius) * this.tspeed; } else { a = this.lasta * 0.98; b = this.lastb * 0.98; } this.lasta = a; this.lastb = b; if (Math.abs(a) <= 0.01 && Math.abs(b) <= 0.01) { return } var c = 0; this.sineCosine(a,c); for (var j = 0; j < this.mcList.length; j++) { var rx1 = this.mcList[j].cx; var ry1 = this.mcList[j].cy * this.ca + this.mcList[j].cz * (-this.sa); var rz1 = this.mcList[j].cy * this.sa + this.mcList[j].cz * this.ca; var rx2 = rx1 * this.cb + rz1 * this.sb; var ry2 = ry1; var rz2 = rx1 * (-this.sb) + rz1 * this.cb; var rx3 = rx2 * this.cc + ry2 * (-this.sc); var ry3 = rx2 * this.sc + ry2 * this.cc; var rz3 = rz2; this.mcList[j].cx = rx3; this.mcList[j].cy = ry3; this.mcList[j].cz = rz
3; var per = this.d / (this.d + rz3); this.mcList[j].x = (this.howElliptical * rx3 * per) - (this.howElliptical * 2); this.mcList[j].y = ry3 * per; this.mcList[j].scale = per; this.mcList[j].alpha = per; this.mcList[j].alpha = (this.mcList[j].alpha - 0.6) * (10 / 6); } this.doPosition(); this.depthSort(); }) },// doPosition() { this.$nextTick(() => { // 注意: 所有的在onReady方法中執行的方法都需要$nextTick確保所有的標籤都已經渲染 var l = this.oList.offsetWidth / 2; var t = this.oList.offsetHeight / 2; for (var i = 0; i < this.mcList.length; i++) { this.oA[i].style.left = this.mcList[i].cx + l - this.mcList[i].offsetWidth / 2 + 'px'; this.oA[i].style.top = this.mcList[i].cy + t - this.mcList[i].offsetHeight / 2 + 'px'; this.oA[i].st客棧yle.fontSize = Math.ceil(12 * this.mcList[i].scale / 2) + 8 + 'px'; // this.oA[i].style.filter = "alpha(opacity=" + 100 * this.mcList[i].alpha + ")"; this.oA[i].style.opacity = this.mcList[i].alpha; } }) },// depthSort() { this.$nextTick(() => { // 注意: 所有的在onReady方法中執行的方法都需要$nextTick確保所有的標籤都已經渲染 var aTmp = []; for (let i = 0; i < this.oA.length; i++) { aTmp.push(this.oA[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 (let i = 0UmnHlQqdEq; i < aTmp.length; i++) { aTmp[i].style.zIndex = i; } }) },// 網路請求 拿到tagList query() { // 假裝從介面拿回來的資料 let tagListOrg = [ { name: '標籤1',url: 'www.baidu.com' },{ name: '標籤2',{ name: '標籤3',{ name: '標籤4',{ name: '標籤5',{ name: '標籤6',{ name: '標籤7',{ name: '標籤8',{ name: '標籤9',{ name: '標籤10',{ name: '標籤11',{ name: '標籤12',{ name: '標籤13',{ name: '標籤14',{ name: '標籤15',{ name: '標籤16',url: 'www.baidu.UmnHlQqdEqcom' },{ name: '標籤17',url: 'www.baidu.com' } ]; // 給tagList新增隨機顏色 tagListOrg.forEach(item => { item.color = "rgb(" + this.getRandomNum() + "," + this.getRandomNum() + "," + this.getRandomNum() + ")"; }) this.tagList = tagListOrg; this.onReady(); },// 生成標籤雲 onReady() { this.$nextTick(() => { this.oList = this.$refs.tagcloudall; this.oA = this.oList.getElementsByTagName('a') var oTag = null; for (var i = 0; i < this.oA.length; i++) { oTag = {}; oTag.offsetWidth = this.oA[i].offsetWidth; oTag.offsetHeight = this.oA[i].offsetHeight; this.mcList.push(oTag); } this.sineCosine(0,0); this.positionAll(); this.oList.onmouseover = () => { this.active = true; } this.oList.onmouseout = () => { this.active = false; } this.oList.onmousemove = (event) => { var oEvent = window.event || event; this.mouseX = oEvent.clientX - (this.oList.offsetLeft + this.oList.offsetWidth / 2); this.mouseY = oEvent.clientY - (this.oList.offsetTop + this.oList.offsetHeight / 2); this.mouseX /= 5; this.mouseY /= 5; } setInterval(() => { this.update() },30); // 定時器執行 不能寫setInterval(this.update(),30) }) } },created() { this.$nextTick(() => { this.query(); }) } }

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