实体生命周期

• 实体的创建、更新、查询、删除

展开代码

<template>
  <div ref="cesiumContainer" class="container"></div>
</template>

<script setup>
import { ref, onMounted } from "vue";
import * as Cesium from "cesium";
const cesiumContainer = ref(null);
let viewer = null;

// 天地图TOKEN
const token = "05be06461004055923091de7f3e51aa6";

onMounted(() => {
  // 初始化Viewer
  viewer = new Cesium.Viewer(cesiumContainer.value, {
    geocoder: false, // 关闭地理编码搜索
    homeButton: false, // 关闭主页按钮
    sceneModePicker: false, // 关闭场景模式选择器
    baseLayerPicker: false, // 关闭底图选择器
    navigationHelpButton: false, // 关闭导航帮助
    animation: false, // 关闭动画控件
    timeline: false, // 关闭时间轴
    fullscreenButton: false, // 关闭全屏按钮
    baseLayer: false, // 关闭默认地图
  });
  // 清空logo
  viewer.cesiumWidget.creditContainer.style.display = "none";
  initMap();

  // 创建实体
  const entity = viewer.entities.add({
    id: "unique-id", // 建议显式指定唯一ID
    position: Cesium.Cartesian3.fromDegrees(116.3975, 39.9075),
    point: { pixelSize: 10, color: Cesium.Color.RED },
  });

  viewer.flyTo(entity);

  // 更新实体
  setTimeout(() => {
    entity.position = Cesium.Cartesian3.fromDegrees(116.4075, 39.9075);
    entity.point.color = Cesium.Color.BLUE;
    viewer.flyTo(entity);
  }, 5000);

  // 查询实体
  const foundEntity = viewer.entities.getById("unique-id");

  // 删除实体
  // setTimeout(() => {
  //   viewer.entities.remove(entity);
  // }, 5000);
  // 批量删除
  // setTimeout(() => {
  //   viewer.entities.removeAll();
  // }, 5000);
});

// 加载天地图
const initMap = () => {
  // 以下为天地图及天地图标注加载
  const tiandituProvider = new Cesium.WebMapTileServiceImageryProvider({
    url:
      "http://{s}.tianditu.gov.cn/img_w/wmts?service=wmts&request=GetTile&version=1.0.0&LAYER=img&tileMatrixSet=w&TileMatrix={TileMatrix}&TileRow={TileRow}&TileCol={TileCol}&style=default&format=tiles&tk=" +
      token,
    layer: "img",
    style: "default",
    format: "tiles",
    tileMatrixSetID: "w",
    subdomains: ["t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7"], // 子域名
    maximumLevel: 18,
    credit: new Cesium.Credit("天地图影像"),
  });
  // 天地图影像添加到viewer实例的影像图层集合中
  viewer.imageryLayers.addImageryProvider(tiandituProvider);
};
</script>
<style scoped>
.container {
  width: 100vw;
  height: 100vh;
}
</style>