Vue.js2+Cesium1.103.0 十二、绑定多个 DOM 弹窗，并跟随视角实时更新位置

Demo

基于 element-ui 的 Message 封装一个自定义弹窗，添加到页面中，并实时更新位置。

<template>
  <div
    id="cesium-container"
    style="width: 100%; height: 100%;"
  />
</template>

<script>
/* eslint-disable no-undef */
import { Message } from 'element-ui'
import Window from './components/Window.vue'
import * as turf from '@turf/turf'

function MonomerMessage(
  h,
  {
    component = null,
    componentName = '',
    messageData = {},
    confirmValidate = () => {},
    ...rest
  }
) {
  return Message({
    message: h(Window, {
      props: { messageData }
    }),
    duration: 0,
    ...rest
  })
}
window.$MyMessage = MonomerMessage

export default {
  data() {
    return {}
  },
  computed: {},
  watch: {},
  mounted() {
    window.$InitMap()
    viewer.camera.flyTo({
      destination: Cesium.Rectangle.fromDegrees(
        70.01180980018789,
        20.12881664932077,
        134.27620577723778,
        50.568644557429835
      )
    })

    const positions = turf
      .randomPoint(20, {
        bbox: [
          70.01180980018789, 20.12881664932077, 134.27620577723778,
          50.568644557429835
        ]
      })
      .features.map((_, index) => {
        return {
          longitude: parseFloat(_.geometry.coordinates[0]).toFixed(7),
          latitude: parseFloat(_.geometry.coordinates[1]).toFixed(7),
          altitude: index
        }
      })

    for (let index = 0; index < positions.length; index++) {
      const element = positions[index]
      $MyMessage(this.$createElement, {
        customClass: 'my_message',
        messageData: element
      })
    }
  },
  methods: {}
}
</script>

<style lang="scss">
.el-message {
  &.my_message {
    width: max-content;
    min-width: auto;
    transition: none;
    transform: scale(0.5);
    background-color: rgba($color: #ffffff, $alpha: 0.8);
    .el-icon-info {
      display: none;
    }
  }
}
</style>

Window.vue

<template>
  <div style="display: flex; align-items: center;">
    <img
      :src="require('@/assets/images/site.png')"
      alt=""
      style="width: 20px;height: 20px;"
    >
    <div>
      <div>经度：{{ messageData.longitude }}</div>
      <div>纬度：{{ messageData.latitude }}</div>
      <div>海拔：{{ messageData.altitude }}</div>
    </div>
  </div>
</template>

<script>
/* eslint-disable no-undef */
export default {
  name: 'Window',

  props: {
    messageData: {
      type: Object,
      default() {
        return {}
      }
    }
  },

  data() {
    return {}
  },

  mounted() {
    viewer.scene.preRender.addEventListener(this.eventListener)
  },

  beforeDestroy() {
    viewer.scene.preRender.removeEventListener(this.eventListener)
  },

  methods: {
    eventListener() {
      const position = Cesium.Cartesian3.fromDegrees(
        this.messageData.longitude,
        this.messageData.latitude,
        this.messageData.altitude
      )
      const result = Cesium.SceneTransforms.wgs84ToWindowCoordinates(
        viewer.scene,
        position
      )
      if (position) {
        this.$parent.$el.style.left = `${result.x}px`
        this.$parent.$el.style.top = `${result.y}px`
      }
    }
  }
}
</script>