CHANGELOG

Spiral-Galaxy-Renderer 
Copyright (C) 2009 - 2020 Ingo Berg

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    https://beltoforion.de/en/spiral_galaxy_renderer
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History:
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Rev 1.9.9 2020-12-15
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Changes:
   * Reorganized the Help Screen to make keyboard shortcuts more obvious
   * Changed rendering logic to use shaders for density waves, text, diagrsam axis and velocity curves
   * source code cleaned up and updated to C++17 standard
   * added controls to change galaxy dust temperature
   * added more predefined galaxies and changed existing ones

Rev 1.1.0 2020-12-02
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Changes:
   * removed NetBeans project 
   * Visual Studio Project updated to SDL2
   * Added perturbation to the ellipsis to create more diverse spiral arm patterns

Rev 1.0.0 2009-08-09
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   * initial Release