-rays are now handled inside class Ray
-constructRay function removed as the functionality is replaced by Ray's constructor
- added an unnamed enum to make indexing Ray::m_points more clear
- Ray::angle is used to keep track of the angle to +x, is updated when any point in Ray::m_points is updated
- Helper.hpp has been renamed to Utility.hpp
-all functions that were above main() are now in Utility.hpp
-rays now behave like a light source
-rays get sorted by angle and get placed into a TriangleFan which is drawn as the light source
-added additional options to the imgui menu
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