calculate_direction

unit_sphere::vector

Function calculate_direction 

Source 
pub fn calculate_direction(lat: Angle, lon: Angle, azi: Angle) -> Vector3d
Expand description

Calculate the direction vector along a Great Circle from an initial position and an azimuth.

See: Panou and Korakitis equations: 30, 31, & 32a https://arxiv.org/abs/1811.03513

  • lat - start point Latitude.
  • lon - start point Longitude.
  • azi - start point azimuth.

returns the direction vector at the point on the great circle.