[vtkusers] L-system, hexa and tetrahedrons

[Pedro Filipe Monteiro Mendon Äa]

I'm new to vtk and for the moment I have 3 goals:
1)Construct a simple L-system(2D or 3D);
2)Construct the sierpinki tetrahedron;
3)Construct the menger sponge.

I'm working in c++.

Can anyone already do some of these and/or give me some hints?

Thanks.