star-cem

Compute the position of the sun
git clone git://git.meso-star.com/star-cem.git
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README.md (1229B)

      1 # Star-CElestialMechanics
      2 
      3 Compute the position of the stars.
      4 Currently, only the calculation of the sun's position relative to a
      5 position on the Earth's surface is offered for a given date.
      6 
      7 ## Pre-requisites
      8 
      9 - C compiler
     10 - POSIX make
     11 - pkg-config
     12 - RSys
     13 
     14 ## Installation
     15 
     16 Edit config.mk as needed, then run:
     17 
     18     make clean install
     19 
     20 ## Release notes
     21 
     22 ### Version 0.1
     23 
     24 - Rename zenith in elevation in man and code.
     25   This breaks the API as the scem_sun_pos struct is modified.
     26   However, the code still compute the same value: this is only a rename.
     27 - Add an utility function to convert a scem_sun_pos to a 3D vector giving the
     28   direction from the sun to the observer.
     29 - Man wording improvement.
     30 
     31 ### Version 0.0
     32 
     33 - Provide the scem library, which calculates the position of the sun at
     34   a given date and location on Earth.
     35 - Provide the scem tool, which interfaces with the library of the same
     36   name to calculate the position of the sun from the command line
     37   interface.
     38 
     39 ## License
     40 
     41 Copyright (C) 2025 |Méso|Star> (contact@meso-star.com)
     42 
     43 This is free software released under GPL v3+ license: GNU GPL version 3
     44 or later. You are welcome to redistribute it under certain conditions;
     45 refer to the COPYING file for details.