[vtkusers] how to create a torus ?

[Jan Ehrhardt]

Hi all,

I want to create simple geometric objects.

A torus, a sphere and a icosahedron.

I don't want to create an image volume with the desired structure
painted in, and
than using MC !
It is realy essential that the triangles of the created structure are
uniform, as
far as possible. Thats the reason, why I can't use vtkSphereSource.

Can anyone tell me algorithms to create triangle models of such
structures in 
different resolutions?

Thanks,

	Jan