动态时序图

来源

该案例源码来自Cesium-Examples，素材在源码/src/Basics/timeMap目录下。也可从Cesium-Examples中获取。
介绍

使用Cesium.SingleTileImageryProvider加载单张图片作为时序图
使用Cesium.ImageryLayer将时序图添加到viewer.imageryLayers中
通过定时器setInterval实现动态切换时序图
注意在加载天地图后再初始化时序图，否则天地图会覆盖我们的时序图
展开代码
vue
<template>
  <div ref="cesiumContainer" class="container"></div>
  <div style="position: absolute; left: 20px; top: 20px; z-index: 1000">
    <button @click="openTimeMap()">开启</button>
    <button @click="closeTimeMap()">关闭</button>
  </div>
</template>

<script setup>
import { ref, onMounted } from "vue";
import * as Cesium from "cesium";

const cesiumContainer = ref(null);
let viewer = null;

const arrTileLayer = [];
let mapTimer = null;
let currentTimeMapIndex = 0;

// 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";

  // 动态时序图
  viewer.camera.flyTo({
    destination: Cesium.Cartesian3.fromDegrees(
      110.511154,
      29.362943,
      5531517.4
    ),
    duration: 2,
    orientation: {
      heading: Cesium.Math.toRadians(348.3), // 水平旋转，围绕Y轴，0为正北方向
      pitch: Cesium.Math.toRadians(-89.8), // 上下旋转，围绕X轴，-90为俯视地面
      roll: 0.0, // 视口的翻滚角度，围绕Z轴，0为不翻转
    },
  });

  initMap();

  // 注意这里要在天地图加载后再初始化时序图，否则天地图会覆盖我们的时序图
  initTimeMap();
});

// 开启
const openTimeMap = () => {
  closeTimeMap();
  mapTimer = setInterval(() => {
    if (currentTimeMapIndex > arrTileLayer.length) {
      currentTimeMapIndex = 0;
    }
    currentTimeMapIndex++;

    const layer1 = arrTileLayer[currentTimeMapIndex - 1];
    if (layer1) {
      layer1.alpha = 0;
    }
    const layer2 = arrTileLayer[currentTimeMapIndex];
    if (layer2) {
      layer2.alpha = 1;
    }
  }, 300);
};
// 关闭
const closeTimeMap = () => {
  clearInterval(mapTimer);
  try {
    arrTileLayer[currentTimeMapIndex].alpha = 0;
    currentTimeMapIndex = 0;
  } catch (error) {}
};
const initTimeMap = () => {
  const urlArr = [
    "/src/cesium/timeMap/20200522145400_20200522145400_0c972b7abe4f4b4fbdbe909f5c1ca17a.png",
    "/src/cesium/timeMap/20200522145400_20200522150000_55c4adac7ac8460db3d893866897bd6d.png",
    "/src/cesium/timeMap/20200522145400_20200522150600_ca075253d90e40049f069d22a1a3ce3d.png",
    "/src/cesium/timeMap/20200522145400_20200522151200_afe188f5892d4dd8a4d09d94c746ce1f.png",
    "/src/cesium/timeMap/20200522145400_20200522151800_b10b132f2d52424e9ab55a61896e86b0.png",
    "/src/cesium/timeMap/20200522145400_20200522152400_4ad54289d6f64f5aaa160f453a99b14a.png",
    "/src/cesium/timeMap/20200522145400_20200522153000_cf72453eba0b4b33966f69899771ba16.png",
    "/src/cesium/timeMap/20200522145400_20200522153600_c3aac59805ec433bae08bc8d77d25d20.png",
    "/src/cesium/timeMap/20200522145400_20200522154200_42a885bb66144e698190c38d02b3be96.png",
    "/src/cesium/timeMap/20200522145400_20200522154800_4564689c557e43ff993ad0113363bd6d.png",
    "/src/cesium/timeMap/20200522145400_20200522155400_4742e31563464542a533a43d5414a7ae.png",
    "/src/cesium/timeMap/20200522145400_20200522160000_487da64a0f384795848e60f2ed343500.png",
    "/src/cesium/timeMap/20200522145400_20200522160600_9a1cf5da2f2c46158f113c057b9bb079.png",
    "/src/cesium/timeMap/20200522145400_20200522161200_76861453df20413fa1eff57c8c938758.png",
    "/src/cesium/timeMap/20200522145400_20200522161800_767d25a128e94d968522badfaf071a66.png",
    "/src/cesium/timeMap/20200522145400_20200522162400_8b949a9d47fd4f289bd51afe9e009ab9.png",
    "/src/cesium/timeMap/20200522145400_20200522163000_9f234335ae2c42ac91d5dfc62b72f3db.png",
    "/src/cesium/timeMap/20200522145400_20200522163600_a808919c4a5a4142b188520a74dacf75.png",
    "/src/cesium/timeMap/20200522145400_20200522164200_248688f96cfd438eb5229812dfb748c3.png",
    "/src/cesium/timeMap/20200522145400_20200522164800_797dd13e0a304fbe934fee1902b7fc21.png",
    "/src/cesium/timeMap/20200522145400_20200522165400_0be5ef511d6c467288ec9f7b961821bd.png",
    "/src/cesium/timeMap/20200522145400_20200522170000_a1820b8d4527467a85db7fee3b352bbb.png",
    "/src/cesium/timeMap/20200522145400_20200522170600_964ada943fcf4a13aa59364b1efd0b1b.png",
  ];

  for (let i = 0, len = urlArr.length; i < len; i++) {
    var imageryProvider = new Cesium.SingleTileImageryProvider({
      url: urlArr[i],
      rectangle: Cesium.Rectangle.fromDegrees(
        63.8148899733,
        12.7700338517,
        143.536486117,
        56.3833398551
      ),
      tileWidth: 0,
      tileHeight: 0,
    });

    let options = {
      alpha: 0,
    };
    var imageryLayer = new Cesium.ImageryLayer(imageryProvider, options);
    viewer.imageryLayers.add(imageryLayer);

    arrTileLayer.push(imageryLayer);
  }
};

// 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", // 天地图使用 Web 墨卡托投影（EPSG:3857），需确保 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"),
  });

  // 添加地理标注
  const labelProvider = new Cesium.WebMapTileServiceImageryProvider({
    url:
      "http://{s}.tianditu.gov.cn/cia_w/wmts?service=wmts&request=GetTile&version=1.0.0&LAYER=cia&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"], // 子域名轮询
    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);
  // 天地图地理标注（后添加的会覆盖前面的）
  viewer.imageryLayers.addImageryProvider(labelProvider);
};
</script>
<style scoped>
.container {
  width: 100vw;
  height: 100vh;
}
</style>
动态时序图 ​

来源 ​

介绍 ​

动态时序图

来源

介绍
