CGAL users discussion list

[Laurent Saboret <>]

Hi Marc,

I assume that you are using Visual C++ under Windows.

To turn on traces of 
examples/surface_reconstruction_points_3/poisson_reconstruction_example.cpp, 
you should add the next line in 
examples/surface_reconstruction_points_3/CMakeList.txt
  ADD_DEFINITIONS( "-DDEBUG_TRACE" ) # turn on traces
then re-compile poisson_reconstruction_example.cpp with VC++ (debug version).

Then please run again poisson_reconstruction_example (debug version) and post 
its output in cgal-discuss.

Best regards,
Laurent Saboret


Le 02/08/2011 08:58, Marc Klopfenstein a écrit :
> Yes I'm still stuck with Poisson Surface Reconstruction.
>
> The problems:
>
> 1) How can I activate CGAL Trace ?
> 2) Why  have I problems with surface reconstruction when the point set
> contains more then 250 000 points.
>
>
> What I made so far:
>
> - I took the 752_bimba_1Mfaces_noautointersect.off file on the website and I
> put  the point set in a .xyz file.
>
> - I run the Point_set_processing_3/normals_example.cpp to generate the
> normal’s and saved it again in a .xyz file. Result: 500 000 points.
>
> - Finally I run the
> surface_reconstruction_points_3/poisson_reconstruction_example.cpp in which
> I just added a point set simplification.
>
>
> Results:
>
> - It works well with less than 200 000 point, above I have the message error
> (Error: cannot solve Poisson equation)
>
> - When I use my point set (average spacing: 25) it works also with less than
> 200 000 points and above I have directly a crash in taucs. Why did I have
> such a gap between my application (200k points) and yours (1.3M points)?
>
> Thanks,
>
> Marc
>
>
> --
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