CGAL users discussion list

[Pierre JUILLARD <>]

Ok, so I come back with another suggestion.

I had a look on the link you gave me and looked at the movies.
It is actually a behaviour of ParaView which you may know (open source software base on VTK for scientific data visualization):
http://www.paraview.org/

I indeed noticed that when I was making a 3D mesh rotate, such simplifications were carried out (most probably to decrease the CPU load).
As this software is based on VTK, I simply typped in Google: "vtk progressive mesh", and I found many results.
You should tried.

I most notably found this paper (Mesh Decimation Using VTK) which describe the classes in VTK allowing mesh decimation:
http://www.cg.tuwien.ac.at/courses/Seminar/SS2002/Knapp_paper.pdf

If you want to have a close look on these classes, I would recommend going to the doxygen documentation:
http://www.vtk.org/doc/nightly/html/classes.html

Regards,

Pierre

2009/1/24 <>

Pierre,

 Thanks for the suggestion, but this is not really what I mean by the term
progressive mesh.  Rather, what I meant was the progressive mesh structure
introduced by Hoppe
(http://research.microsoft.com/en-us/um/people/hoppe/proj/pm).  Basically, the
reason I asked on the CGAL discuss list is because it seems like CGAL takes on
part of the way to implementing this structure.  Namely, they provide the
EdgeCollapsable mesh concept.  I was just curious how difficult it would be to
implement and properly keep track of the edge collapses and to reintroduce
removed vertices with a vertex split.  I also wanted to see if anyone else had
done this, as I  see no real use in re-inventing the wheel.

Thanks,
Rob
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