4D Graphics

This program draws images of different geometrical objects, such as polytopes, quadratic forms and functions of complex variables. It displays all 6 2-dimensional projections of 4-dimensional object, magnified 2-dimensional and 3-dimensional projections. All projections can be animated by touching the screen.
All formulas and equations one can find at http://books.google.com/books/about/N_D_Graphics.html.