Hey David,
Are you sure you don't have a bunch of duplicate points? If you run
the "Clean" (vtkCleanPolyData) filter to merge coincident points, it
looks more like there are only normals on one side or the other for
each point (but they're not all on the same side of the surface).
-Eric
------------------------------------------------------
Eric E Monson
Duke Visualization Technology Group
On Mar 29, 2009, at 4:01 PM, David Doria wrote:
Is there anyway to get normals on only 1 side of this surface?
http://engineeringnotes.net/Scene.vtp
If you glyph the normals, you'll see they point in both directions.
I tried all of the options in "extract surface normals", but none of
them did it.
Thanks,
David
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