[vtkusers] ray caster

[Wolfram H Volpi]

Hello, vtk users.

I have a question about ray casting.
For each pixel, one ray is cast into the scene (at least that is the
theory).
Where in VTK is the loop that shoots all these rays into the scene?

I modified the class vtkVolumeRayCastMIPFunction and want to run it for
just one ray.

Thank you,
Wolfv.