以下代码示例演示了如何使用 CameraRestriction 来限制相机的地理边界以及相机的高度、航向和倾斜度值。如需使用此代码示例，请按照设置和向应用添加 3D 地图中的说明，使用基本 3D 地图设置 Android Studio 项目。
然后，将以下代码添加到 MainActivity.kt 文件中：
// Add imports and define constants import com.google.android.gms.maps3d.model.AltitudeMode import com.google.android.gms.maps3d.model.LatLngAltitude import com.google.android.gms.maps3d.model.cameraRestriction import com.google.android.gms.maps3d.model.latLngAltitude import com.google.android.gms.maps3d.model.latLngBounds import com.google.android.gms.maps3d.model.polygonOptions const val EMPIRE_STATE_BUILDING_LATITUDE = 40.748233 const val EMPIRE_STATE_BUILDING_LONGITUDE = -73.985663 private const val NYC_SOUTH_WEST_LAT = 40.68563088976172 private const val NYC_SOUTH_WEST_LNG = -74.05030430240065 private const val NYC_NORTH_EAST_LAT = 40.85649214337128 private const val NYC_NORTH_EAST_LNG = -73.80240973771173 private const val MAX_ALTITUDE_NYC_METERS = 10000.0 private const val MIN_ALTITUDE_NYC_METERS = 500.0 private val nycBounds = latLngBounds { northEastLat = NYC_NORTH_EAST_LAT northEastLng = NYC_NORTH_EAST_LNG southWestLat = NYC_SOUTH_WEST_LAT southWestLng = NYC_SOUTH_WEST_LNG } // Define the restrictions val nycCameraRestriction = cameraRestriction { minAltitude = MIN_ALTITUDE_NYC_METERS maxAltitude = MAX_ALTITUDE_NYC_METERS minHeading = 0.0 maxHeading = 360.0 minTilt = 0.0 maxTilt = 90.0 bounds = nycBounds }