Bending surface with Python

This project I have created for course "Selected Chapters of Mathematics" and the goal of the project was to show how bending surface in the direction of the normal can help us to get a new surface with very interesting relief. For realization of that project I used programming language Python and its modules NumPy for mathematical functions and Mayavi for scene. I have created five toruses and put them to XY plane of the coordinate system. The scene consists of: torus with fixed radius, torus with variable radius, one with bending, and two toruses with random bending.