Enumeration HrzProtocol.SunDirectionMode

Defined in hrz/protocol/scene/view_settings.proto.

SUN_DIRECTION_RELATIVE_TO_DATE (0)

The direction is computed from the current date and time.

SUN_DIRECTION_RELATIVE_TO_CARDINAL_FRAME (1)

The direction is explicitly given using azimuth and altitude angles. Counter-clockwise rotation, with azimuth 0 being North-aligned.

SUN_DIRECTION_RELATIVE_TO_TANGENTIAL_FRAME (2)

The direction is explicitly given using azimuth and altitude angles. Counter-clockwise rotation, with azimuth 0 aligned towards the forward direction of the camera (or the up direction when it perfectly faces the Earth).