CalcMySky is a software package that simulates scattering of light by
the atmosphere to render daytime and twilight skies (without stars). Its
primary purpose is to enable realistic view of the sky in applications
such as planetaria. Secondary objective is to make it possible to
explore atmospheric effects such as glories, fogbows etc., as well as
simulate unusual environments such as on Mars or an exoplanet orbiting a
star with a non-solar spectrum of radiation.

This package consists of three parts:

 - calcmysky utility that does the precomputation of the atmosphere
   model to enable rendering,
 - libShowMySky library that lets the applications render the atmosphere
   model,
 - ShowMySky preview GUI that makes it possible to preview the rendering
   of the atmosphere model and examine its properties.

Optional dependencies: qt6

To enable building for qt6, set the QT6 variable before building:

  QT6=yes sh CalcMySky.SlackBuild
