原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=Drape%20Imagery%20on%203D%20Tiles.html&label=All

效果如下图所示：

示例代码如下：

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/**
 * 生成用于访问 iTwin 的共享密钥（无需 OAuth）
 * 请访问：https://developer.bentley.com/apis/access-control-v2/operations/create-itwin-share/
 */
Cesium.ITwinPlatform.defaultShareKey =
  "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpVHdpbklkIjoiNTM1YTI0YTMtOWIyOS00ZTIzLWJiNWQtOWNlZGI1MjRjNzQzIiwiaWQiOiI2NTEwMzUzMi02MmU3LTRmZGQtOWNlNy1iODIxYmEyMmI5NjMiLCJleHAiOjE3NzcwNTU4MTh9.Q9MgsWWkc6bb1zHUJ7ahZjxPtaTWEjpNvRln7NS3faM";

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

viewer.scene.skyAtmosphere.show = true;

const iTwinId = "535a24a3-9b29-4e23-bb5d-9cedb524c743";
const realityMeshId = "85897090-3bcc-470b-bec7-20bb639cc1b9";
//ITwinData类提供了几个将 iTwin 平台数据加载到 CesiumJS 的方法
const tileset = await Cesium.ITwinData.createTilesetForRealityDataId(
  iTwinId,
  realityMeshId,
);
viewer.scene.primitives.add(tileset);
tileset.maximumScreenSpaceError = 2;

// 创建 Bing Maps 的图像层（仅包含注记(标签)，无地图）
const labelImageryLayer = Cesium.ImageryLayer.fromProviderAsync(
  Cesium.IonImageryProvider.fromAssetId(2411391),
);
tileset.imageryLayers.add(labelImageryLayer);

Sandcastle.addToggleButton(
  "显示注记图层",
  labelImageryLayer.show,
  function (checked) {
    labelImageryLayer.show = checked;
  },
);

// 看向费城(位于美国宾夕法尼亚州)
viewer.scene.camera.setView({
  destination: new Cesium.Cartesian3(
    1252289.5782535905,
    -4732887.700120302,
    4075105.3952877373,
  ),
  orientation: new Cesium.HeadingPitchRoll(
    6.130466027267037,
    -1.1315283015826818,
    6.2831472551984575,
  ),
});