# GoogleMaps3D Framework Reference

# AltitudeMode

    enum AltitudeMode

    extension AltitudeMode : Equatable, Hashable

- `


  ### [==(_:_:)](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO2eeoiySbAC_ACtFZ)


  ` Returns a Boolean value indicating whether two values are equal.

  Equality is the inverse of inequality. For any values `a` and `b`,
  `a == b` implies that `a != b` is `false`.

  #### Declaration

  Swift

      static func == (a: AltitudeMode, b: AltitudeMode) -> Bool

- `


  ### [absolute](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO8absoluteyA2CmF)


  ` Allows to express objects relative to the average mean sea level. That also
  means that if the terrain level of detail changes underneath the object,
  its absolute position will remain the same.

  #### Declaration

  Swift

      case absolute

- `


  ### [clampToGround](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO13clampToGroundyA2CmF)


  ` Allows to express objects placed on the ground. They will remain at ground
  level following the terrain regardless of what altitude is provided. If the
  object is positioned over a major body of water, it will be placed at sea
  level.

  #### Declaration

  Swift

      case clampToGround

- `


  ### [hash(into:)](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO4hash4intoys6HasherVz_tF)


  ` Hashes the essential components of this value by feeding them into the
  given hasher.

  Implement this method to conform to the `Hashable` protocol. The
  components used for hashing must be the same as the components compared
  in your type's `==` operator implementation. Call `hasher.combine(_:)`
  with each of these components.
  Important

  In your implementation of `hash(into:)`,
  don't call `finalize()` on the `hasher` instance provided,
  or replace it with a different instance.
  Doing so may become a compile-time error in the future.

  #### Declaration

  Swift

      func hash(into hasher: inout Hasher)

- `


  ### [hashValue](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO9hashValueSivp)


  ` The hash value.

  Hash values are not guaranteed to be equal across different executions of
  your program. Do not save hash values to use during a future execution.
  Important
  `hashValue` is deprecated as a `Hashable` requirement. To conform to `Hashable`, implement the `https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode.html#/s:12GoogleMaps3D12AltitudeModeO4hash4intoys6HasherVz_tF` requirement instead. The compiler provides an implementation for `hashValue` for you.

  #### Declaration

  Swift

      var hashValue: Int { get }

- `


  ### [relativeToGround](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO16relativeToGroundyA2CmF)


  ` Allows to express objects relative to the ground surface. If the terrain
  level of detail changes, the position of the object will remain constant
  relative to the ground. When over water, the altitude will be interpreted
  as a value in meters above sea level.

  #### Declaration

  Swift

      case relativeToGround

- `


  ### [relativeToMesh](https://developers.google.com/maps/documentation/maps-3d/ios-sdk/reference/Enums/AltitudeMode#/s:12GoogleMaps3D12AltitudeModeO14relativeToMeshyA2CmF)


  ` Allows to express altitude of points, cameras and other objects relative to
  the highest of ground+building+water surface. When over water, this will be
  water surface; when over terrain, this will be the building surface (if
  present) or ground surface (if no buildings).

  #### Declaration

  Swift

      case relativeToMesh