[vtkusers] speed problem

[Steffen Oeltze]

Dear VTK-users,

I use vtkTubeFilter to draw polylines within a raycasted volume. 
Unfortunately,
I takes almost 2 seconds to draw a short line of 5 points. Could it be 
that the
vtkTubeFilter is just slow or is the volume raycasted again each time I draw
a polyline ? Does anybody have an idea ?

Regards,
Steffen