[vtkusers] Re: VTK24 vs. 312, quality and performance

[Tom G. Smith (B75826)]

Based on a response from Malcolm Drummond regarding clipping,
I did some experimenting, and discovered this helps my renderings
considerably:

 cmd [list\
                "eval {[ren1 GetActiveCamera] SetPosition } 0 0 1500"\
                "eval {[ren1 GetActiveCamera] SetThickness } 1000.0"]

I do this just before entering the loop to generate the ppm files
showing the scene rotated in increments about 360 degrees.  I also
recompiled VTK specifying --with-opengl rather than --with-mesa,
and this seems to've cleaned up most of the undesireable artifacts.
The rendering speed of VTK 3.1.2 is still 4.5 times slower than VTK
2.4, but I can live with that, as long as the quality is comparable.

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