I'm having a few problems getting to grips with the pipeline execution.
Is it possible to have a filter which takes an input but its output will
never go to a mapper or actor? I want to clip some polydata and use the
results of this to perform registration. However, I don't want the
clipping to show in the render window, I just want to use the clipped
data when I perform registration. I've looked through the VTK user
guide, but I can't figure out if this is possible... does anyone know
what I can do or can point me in the right direction somehow?