Blobs, Iso-Surfaces, Metaballs, Whatever...

ok, i am trying to create blobs (whatever) in my modeller i am writing…i am trying to find source code, tutorials, whatever on how to create them. i have found one good one that does spherical, but i need cyndrical also…if anyone know any places or such that would be great! i also need stuff like rotating and translating and scaling info on these blob like things…thanks