This short article by @stevenstrogatz is a sweet intro to group theory: http://archive.is/ORYTt
holy fucking shit this newest alyx update added THIS
wall street, screenshot, arcade (1982) https://archive.org/details/arcade_wallst
Need to test lighting or occlusion techniques in a 3D engine like #godotengine but have no level geometry to test with? I exported dozens of game maps of various complexity as OBJ meshes: https://github.com/Calinou/game-maps-obj
Below is cmvalley in Godot's Vulkan renderer (2 million triangles).
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