https://vk.com/infaculty

https://www.redblobgames.com/grids/line-drawing.html
https://www.redblobgames.com/making-of/line-drawing/
https://github.com/redblobgames/making-of-line-drawing

2018
Vachar - Mathematics of Animation
    https://www.youtube.com/watch?v=KbxJWx-ue0U