原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=3D%20Tiles%20Terrain%20Classification.html&label=All

注： 由于个人的Cesium Ion中没有官方示例中的数据，因此仅在官方提供的在线编辑器中进行了学习、修改。

实现效果如下：

示例代码如下：

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<style>
  @import url(../templates/bucket.css);
  .cesium-performanceDisplay-defaultContainer {
    top: 10px;
    left: 10px;
    right: auto;
  }
</style>
<div id="cesiumContainer" class="fullSize"></div>
<div id="loadingOverlay"><h1>Loading...</h1></div>
<div id="toolbar"></div>
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const viewer = new Cesium.Viewer("cesiumContainer", {
  geocoder: true,
  sceneModePicker: false,
  homeButton: false,
  navigationHelpButton: false,
  baseLayerPicker: false,
  navigationInstructionsInitiallyVisible: false,
  animation: false,
  timeline: false,
  fullscreenButton: false,
  selectionIndicator: false,
  skyBox: false,
  shouldAnimate: true,
  terrain: Cesium.Terrain.fromWorldTerrain(),
});

viewer.cesiumWidget.creditContainer.style.display = "none"; //隐藏版权信息
viewer.scene.debugShowFramesPerSecond = true; //添加帧速显示

const geocoder = viewer.geocoder.viewModel;
//奥地利首都维也纳
geocoder.searchText = "Vienna";
geocoder.flightDuration = 0.0;
geocoder.search();

try {
  /**
   * 矢量 3D Tiles 处于实验阶段，其格式将来可能会发生变化。
   * 详情访问：https://github.com/CesiumGS/3d-tiles/tree/vctr/TileFormats/VectorData
   */
  const tileset = await Cesium.Cesium3DTileset.fromIonAssetId(5737);
  viewer.scene.primitives.add(tileset);

  tileset.style = new Cesium.Cesium3DTileStyle({
    color: "rgba(255, 255, 255, 0.5)",
  });
} catch (error) {
  console.log(`Error loading tileset: ${error}`);
}

// 定义高亮要素信息
const highlighted = {
  feature: undefined,
  originalColor: new Cesium.Color(),
};

// 在鼠标在要素上悬浮显示黄色
viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(movement) {
  if (Cesium.defined(highlighted.feature)) {
    highlighted.feature.color = highlighted.originalColor;
    highlighted.feature = undefined;
  }

  const pickedFeature = viewer.scene.pick(movement.endPosition);
  if (!Cesium.defined(pickedFeature)) {
    return;
  }

  highlighted.feature = pickedFeature;
  Cesium.Color.clone(pickedFeature.color, highlighted.originalColor);
  pickedFeature.color = Cesium.Color.YELLOW;
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);