CGAL users discussion list

[Michel Audette <>]

Dear CGAL developers, 

I'm trying to use the edge_collapse() surface mesh decimation method in conjunction with the output, in off format, of GNU Triangulated Surface Library, to compare the results of VTK's Marching Cubes with GTS' Dual Marching Tetrahedrons. The GTS surface is a little denser than the VTK Marching Cubes result: 18M polygons vs 7M polygons, and currently does not seem to produce an output.. 

michel@michel-desktop:~/simProject/NeuroSurgSim/SimplexDecimationBuild/bin$ ./OffMarchingCubesCGALDecimate brainDualMarchingTet.off 0.002 brainDualMarchingTet_0_002
Reading polyhedron ...
    .... done.

Finished...
0 edges removed.
0 final edges.

Is there a verbose way of using the function that can provide hints? Does 18M faces seem like a lot for edge_collapse to process?

Best wishes,

Michel


-- 
Michel Audette, Ph.D. 
R & D Engineer, 
Kitware Inc.,
Chapel Hill, N.C.