[vtkusers] rotate vtkPoints with vtkTransform

[Burlen]

Hi does anyone know how to rotate just vtkPoints? I have my data in vtkPoints, I want to rotate them about an axis, then get the result, without ever rendering them.
All the examples I have seen work with objects that have SetTransform method, and then you don't ever get the result, it apears in the rendered scene. vtkPoints doesn't have a SetTransform method...

ANy ideas?