STM32 3D engine + SSD1306 monitor
Dirs: 3dinc - 3D math, cppinc - main.h, Inc - C includes, Src - C/C++ src.
Used SSD1306 library by Olivier Van den Eede (4ilo). Some refactoring was done and SPI support was added by Aleksander Alekseev (afiskon) https://github.com/afiskon/stm32-ssd1306. Also library changed by me - added some functions.