fstl fork for yet another clone project.
Added in a ViewCube ( or as it is in my code CubeView... :) )
My CubeView has different idea of the co-ordinate system... :) Cube's vertices are hand written as are the texture co-ordinates, so... :)
ViewCube image assets are from
https://codeburst.io/re-creating-a-3d...
https://github.com/mkeeter/fstl
fstl - Copyright (c) 2014-2017 Matthew Keeter
My Linux PC is i5-2550k and at the moment a single GTX560 (donated the other one to my son and can't get it back unless I buy him a GTX30xx)