I'm a programmer, i create software, i was searching for a book with a practical approach about geometry and how to create shapes.
Probably i'm searching for a book with some practical algorith about linear algebra; I really don't know, but i know that i'm looking for a practical approach for real-world computation, i'm pretty sure i'm not looking for some fractal just for nerding around :P.
My favourite language is C++, if this can drive you to a more specific aid.
EDIT: especially about 3D figures, about convex shapes, fields, vectors, something like that.