**file1_projection.py**
![file1_projection](projection.gif)
**file2_cube.py**
![file2_cube](cube.gif)
**file3_cube_sideC.py**
![file3_cube_sideC](sideC.gif)
**file4_pauseandponder.py**
![file4_pauseandponder](pauseandponder.gif)
**file5_surface.py**
![file5_surface](file5_surface.gif)