天地图添加动态波纹效果

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<div class="circle-marker-content" >
        <div class="item item1" style='
              height:4vh;
              width:4vh;
        '></div>
        <div class="item item2" style='
              height:4vh;
              width:4vh;
        '></div>
        <div class="item item3" style='
              height:4vh;
              width:4vh;
        '></div>
        <div class="item item4" style='
              height:4vh;
              width:4vh;
        '></div>
        <div class="item item5" style='
              height:4vh;
              width:4vh;
        '></div>
</div>

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.circle-marker-content {
    /* display: none; */
    position: absolute;
    top: 50%;
    left: 50%;
    height: 1.8vh;
    width: 1.8vh;
    transform: translate(-50%, -50%);
    border-radius: 100%;
    text-align: center;
    background: #4196ff;
    border: 1px solid #4196ff;
    box-shadow: 0px 0px 14px #4196ff;
    z-index: 1000;

    .item_count {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      color: #1C77C3;
      font-weight: bold;
      font-size: 13px;
      z-index: 10;
    }

    @keyframes scaless {
      0% {
        transform: scale(0);
        opacity: 1;
      }

      100% {
        transform: scale(2);
        opacity: 0;
      }
    }

    .item {
      width: 100%;
      height: 100%;
      position: absolute;
      border-radius: 100%;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
    }

    .item:before {
      content: "";
      position: absolute;
      left: -1px;
      top: -1px;
      display: inline-block;
      width: 100%;
      height: 100%;
      border: 1px solid #4196ff;
      border-radius: 100%;
      opacity: 0;
      background-color: #4196ff;
      animation: scaless 5s infinite cubic-bezier(0, 0, 0.49, 1.02);
    }

    .item1:before {
      animation-delay: 0s;
    }

    .item2:before {
      animation-delay: 1s;
    }

    .item3:before {
      animation-delay: 2s;
    }

    .item4:before {
      animation-delay: 3s;
    }

    .item5::before {
      animation-delay: 4s;
    }
  }

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/**
 *   添加标注  依据经纬度
 *   {Array}  data  渲染数据 每个对象中都包含经纬度
 */
pois(data) {
  console.error('添加标注-----------')
  const that = this;
  const zoomArr = [];
  data.map((i) => {
    // 判断经纬度是否存在
    if (i.latitude && i.longitude) {
      pointDimension([i.longitude, i.latitude], 'hc', i);
    }
  });
  function pointDimension(lnglatArr, type, item) {
    let iconUrl = '';
    if (type === 'hc') { // 自定义标注图片
      iconUrl = '/statics/image/map-icon1.png';
    }
    const icon = new T.Icon({
      iconUrl,
      iconSize: new T.Point(25, 27),
      iconAnchor: new T.Point(10, 25),
    });
    const lnglat = new T.LngLat(lnglatArr[0], lnglatArr[1]);
    // 创建标注对象
    const marker = new T.Marker(lnglat, { icon });
    marker.id = 'iconTag'; // 给图标加个名字  方便删除
    // 地图上添加标注点 
    that.map.addOverLay(marker);

    // 注册标注点的点击事件
    marker.addEventListener('click', (e) => {

      // 添加点击效果
      var definedOverlay = T.Overlay.extend({
        initialize: function (lnglat) {
          that.lnglat = lnglat;
        },

        onAdd: function (map) {
          that.map = map;
          // 获取动态波纹DOM  CSS中加入display:none 一开始不展示 点击标注后展示
          var div = that._div = document.getElementsByClassName('circle-marker-content')[0];
          that._div.style.display = 'block'

          // 将动态波纹 渲染到地图中
          that.map.getPanes().overlayPane.appendChild(that._div);
          
          // 更新位置 将当前动态波纹位置通过经纬度 绝对定位到某个位置
          this.update(that.lnglat);
        },
        /**
         * 更新位置
         */
        update: function () {
          var pos = that.map.lngLatToLayerPoint(that.lnglat);
          that._div.style.top = ( pos.y) + "px";
          that._div.style.left = (pos.x + 4) + "px";
        }
      });
      
      // 添加标注/覆盖物
      var point = new T.LngLat(e.lnglat.lng, e.lnglat.lat);
      const pdefinedOverlay = new definedOverlay(point);
      that.map.addOverLay(pdefinedOverlay);
    }
    
    // 将标注添加到数组中
    zoomArr.push(lnglat);
    that.map.setViewport(zoomArr);
  }
}