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Originally Posted by gameguy
I took a look on github and I see many empty png files( like 2x2-4x4Turn90Part2.png ). What is the purpose of those files?
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They're not empty - but it seems PNG with a zero-ed Alpha channel looks empty in GitHub and most other viewing tools :-( You can see the content if you open the file in an editor.
They are mostly procedurally generated height-map - used in OpenSCAD to generate the 3D surface of the tiles.
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It would be nice if you could add a rendered preview for each tile and push it in github repository.
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They should be in a subdirectory "
previews/" now :-)