[vtkusers] efficient way to add points to an existing surface?

[Alexander Smondyrev]

I am wondering if someone encountered this problem and
may give me some advise. I am trying to add additional
points to an existing surface. The way I did this was
extracting points from an existing surface and then
adding the points which need to be added to the
surface. The new set of points is then used as input
for Delaunay3D triangulation. This worked, but not as
efficiently as I expected. Is there any way to speed
up the process? Possibly utilize existing surface
information, which is currently being wasted when the
new set of points is created? Is there any way to
further optimize the retriangulation if it is known
that all points belong to a surface of a known
geometric object (for simplicity, say cylinder or a
sphere)?

Any advise/comments would be greately appreciated. 

  - Alex Smondyrev

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