# The astro/calcmysky port

## calcmysky-0.4.0 – simulator of light scattering by planetary atmospheres

## Description

    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.

    The simulation is based on E. Bruneton's Precomputed Atmospheric Scattering
    (https://hal.inria.fr/inria-00288758/en) paper and the updated implementation of
    the demo (https://ebruneton.github.io/precomputed_atmospheric_scattering). This
    in particular limits the atmosphere to spherical symmetry (which means localized
    clouds are not supported, and ground albedo is the same all around the globe).

    An additional capability is simulation of solar eclipses, which is currently
    limited to two scattering orders, while the non-eclipsed atmosphere can be
    simulated to arbitrary order.

    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.

WWW: https://github.com/10110111/CalcMySky

Only for arches
  aarch64 aarch64 alpha amd64 amd64 arm arm hppa i386 i386 mips64 mips64 mips64el mips64el powerpc powerpc powerpc64 powerpc64 riscv64 riscv64 sparc64
Broken
  on i386: broken after Qt6 update
Categories:
  astro

## Library dependencies

- x11/qt6/qtbase

## Build dependencies

- STEM->=4:devel/cmake/core
- devel/ninja
- graphics/glm
- graphics/vulkan-loader
- math/eigen3
- x11/qt6/qttools

## Run dependencies