The heading of the camera (measured in degrees) relative to true north.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.2+
0 means that the top edge of the map view corresponds to true north. The value
90 means the top of the map is pointing due east. The value
180 means the top of the map points due south, and so on.