A simple soft engine for rendering 3d objects.

I learnt the Tutorial series: learning how to write a 3D soft engine from scratch in C#, TypeScript or JavaScript at https://www.davrous.com/2013/06/13/tutorial-series-learning-how-to-write-a-3d-soft-engine-from-scratch-in-c-typescript-or-javascript/ and implement my own version in c++.

However, my c++ is so dirty because time I spent in learning it is so dirty.So, my code maybe is not good enough. Dependencies: sfml-2.4.1 in dll folder.