osi3::EnvironmentalConditions::Sun Struct Reference

Azimuth of the sun, counted counterclockwise.

0 pointing north. If north is not explicitly defined via osi3::GroundTruth::proj_string, then north is pointing in y-axis direction. The default orientation (x, y, z) is easting, northing, up [1]. The point of observation is defined to be the global coordinate system's origin.

Note

0: north; +pi/2: west; pi: south, 3/2 pi: east.

Unit: rad

The preferred angular range is [0, 2pi].

References:

[1] PROJ contributors. (2019). PROJ coordinate transformation software library. Open Source Geospatial Foundation. Retrieved January 25, 2019, from https://proj.org/usage/projections.html

Solar elevation angle.

The elevation angle is positive when the sun is above the xy-plane, negative when the sun is below the xy-plane. The point of observation is defined to be the global coordinate system's origin.

Note

0: xy-plane; +pi/2: zenith; -pi/2: nadir.

Unit: rad

The preferred angular range is [-pi/2, +pi/2].

Illuminance of the sun, direct sunlight is around 100000 lx.

Unit: lx

Rules

is_greater_than_or_equal_to: 0