1. 3dtiles的加载

http://localhost:8080/Apps/Sandcastle/index.html?src=3D%20Tiles%20Photogrammetry.html&label=3D%20Tiles

const viewer = new Cesium.Viewer("cesiumContainer", {
  terrainProvider: Cesium.createWorldTerrain(),
});

const tileset = new Cesium.Cesium3DTileset({
  url: Cesium.IonResource.fromAssetId(40866),
});

viewer.scene.primitives.add(tileset);
viewer.zoomTo(tileset);

2. 3dtiles的拾取

http://localhost:8080/Apps/Sandcastle/index.html?src=3D%20Tiles%20Feature%20Picking.html&label=3D%20Tiles

3. 3dtiles的裁切

http://localhost:8080/Apps/Sandcastle/index.html?src=3D%20Tiles%20Clipping%20Planes.html&label=3D%20Tiles

function loadModel(url) {
  clippingPlanes = new Cesium.ClippingPlaneCollection({
    planes: [
      new Cesium.ClippingPlane(
        new Cesium.Cartesian3(0.0, 0.0, -1.0),
        0.0
      ),
    ],
    edgeWidth: viewModel.edgeStylingEnabled ? 1.0 : 0.0,
  });

  const position = Cesium.Cartesian3.fromDegrees(
    -123.0744619,
    44.0503706,
    300.0
  );
  const heading = Cesium.Math.toRadians(135.0);
  const pitch = 0.0;
  const roll = 0.0;
  const hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
  const orientation = Cesium.Transforms.headingPitchRollQuaternion(
    position,
    hpr
  );
  const entity = viewer.entities.add({
    name: url,
    position: position,
    orientation: orientation,
    model: {
      uri: url,
      scale: 8,
      minimumPixelSize: 100.0,
      clippingPlanes: clippingPlanes,
    },
  });

  viewer.trackedEntity = entity;

  for (let i = 0; i < clippingPlanes.length; ++i) {
    const plane = clippingPlanes.get(i);
    const planeEntity = viewer.entities.add({
      position: position,
      plane: {
        dimensions: new Cesium.Cartesian2(300.0, 300.0),
        material: Cesium.Color.WHITE.withAlpha(0.1),
        plane: new Cesium.CallbackProperty(
          createPlaneUpdateFunction(plane),
          false
        ),
        outline: true,
        outlineColor: Cesium.Color.WHITE,
      },
    });

    planeEntities.push(planeEntity);
  }
}

4. 3dtiles inspector

http://localhost:8080/Apps/Sandcastle/index.html?src=3D%20Tiles%20Inspector.html&label=3D%20Tiles

5. ClassificationPrimitive

http://localhost:8080/Apps/Sandcastle/index.html?src=Classification.html