原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=PAMAP%20Terrain.html&label=All

效果如下图所示：点击各个地点查看即可。

注：PAMAP 的全称是 Pennsylvania Mapping and Assessment Program。这个程序是宾夕法尼亚州负责生成详细地图数据的项目，包括数字高程模型，旨在为该州提供高分辨率的地理信息。

示例代码如下：

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const viewer = new Cesium.Viewer("cesiumContainer", {
  geocoder: false,
  homeButton: false,
  sceneModePicker: false,
  navigationHelpButton: false,
  navigationInstructionsInitiallyVisible: false,
  animation: false,
  timeline: false,
  fullscreenButton: false,
  skyBox: false,
  shouldAnimate: true,
  baseLayerPicker: false,
  shadows: true,
});
viewer.cesiumWidget.creditContainer.style.display = "none";

try {
  /**
   * 宾夕法尼亚州高分辨率地形数据，
   * 由宾夕法尼亚空间数据访问中心(PASDA)整理提供 http://www.pasda.psu.edu/
   */
  viewer.terrainProvider =
    await Cesium.CesiumTerrainProvider.fromIonAssetId(3957);
} catch (error) {
  window.alert(`地形数据加载失败. ${error}`);
}

// Add PA locations-添加宾夕法尼亚州几个位置，这里使用PA表示该州标识符
Sandcastle.addDefaultToolbarMenu(
  [
    {
      text: "(阿巴拉契亚山脉)顶峰",
      onselect: function () {
        viewer.scene.camera.flyTo({
          destination: Cesium.Cartesian3.fromRadians(
            -1.3324415110874286,
            0.6954224325279967,
            236.6770689945084,
          ),
          orientation: {
            heading: Cesium.Math.toRadians(310),
            pitch: Cesium.Math.toRadians(-15),
            roll: 0.0,
          },
        });
      },
    },
    {
      text: "尼塔尼山",
      onselect: function () {
        viewer.scene.camera.flyTo({
          destination: Cesium.Cartesian3.fromRadians(
            -1.358985133937573,
            0.7123252393978314,
            451.05748252867375,
          ),
          orientation: {
            heading: Cesium.Math.toRadians(85),
            pitch: Cesium.Math.toRadians(0),
            roll: 0.0,
          },
        });
      },
    },
    {
      text: "蹄铁曲线(铁轨路段)",
      onselect: function () {
        viewer.scene.camera.flyTo({
          destination: Cesium.Cartesian3.fromRadians(
            -1.3700147546199826,
            0.706808606166025,
            993.7916313325215,
          ),
          orientation: {
            heading: Cesium.Math.toRadians(90),
            pitch: Cesium.Math.toRadians(-15),
            roll: 0.0,
          },
        });
      },
    },
    {
      text: "吉姆索普(小镇)",
      onselect: function () {
        viewer.scene.camera.flyTo({
          destination: Cesium.Cartesian3.fromRadians(
            -1.3218297501066052,
            0.713358272291525,
            240.87968743408845,
          ),
          orientation: {
            heading: Cesium.Math.toRadians(200),
            pitch: Cesium.Math.toRadians(-5),
            roll: 0.0,
          },
        });
      },
    },
    {
      text: "派恩溪峽谷",
      onselect: function () {
        viewer.scene.camera.flyTo({
          destination: Cesium.Cartesian3.fromRadians(
            -1.349379633251472,
            0.720297672225785,
            656.268309953562,
          ),
          orientation: {
            heading: Cesium.Math.toRadians(200),
            pitch: Cesium.Math.toRadians(-5),
            roll: 0.0,
          },
        });
      },
    },
  ],
  "toolbar",
);

viewer.scene.camera.flyTo({
  destination: Cesium.Cartesian3.fromRadians(
    -1.3324415110874286,
    0.6954224325279967,
    236.6770689945084,
  ),
  orientation: {
    heading: Cesium.Math.toRadians(310),
    pitch: Cesium.Math.toRadians(-15),
    roll: 0.0,
  },
  duration: 0.0,
});