CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

You have some degenerate triangles which make the intersection test 
crash. Compiling in debug you'd see

terminate called after throwing an instance of 
'CGAL::Precondition_exception'
  what():  CGAL ERROR: precondition violation!
Expr: ! k.is_degenerate_3_object()(t)
File: 
/home/sloriot/CGAL/git/cgal/Intersections_3/include/CGAL/Triangle_3_Segment_3_do_intersect.h
Line: 216
Aborted

What you can do with CGAL is collect the facets that are degenerate
and remove them from the polyhedron. This will not change the output
of the segmentation.
Or you can run tools that can fix your off like meshfix for example.

Sebastien.

On 06/16/2014 05:28 PM, 

 wrote:
> which operating system, compiler, and hardware you are using;
> -- Linux, g++, Intel i7-2640M CPU @ 2.80GHz
>
> information about how CGAL was installed on your system (i.e., which
> options were used, how the library was built, etc.);
> -- Download the source code, make install
>
> any third-party software (such as GMP) that is involved;
> --NO.
>
> a description of the problem or bug and a way to reproduce it (such as a
> small sample program or a sequence of commands);
> -- run the
> examples/Surface_mesh_segmentation/segmentation_via_sdf_values_examples
> using the data file:
> https://www.dropbox.com/s/4zb734mq08vyq7m/351.off
>
> Bug: report "Floating point exception (core dumped)"
> The stack trace is below:
> [bug.PNG]
>
>
>
>
>
> do not forget to mention which kernel you are using, and check for
> potential robustness issues you may have;
> in case of run-time crash, please include a stack trace provided by the
> debugger;
> in case of problems with the installation, make sure to include the
> install.log file.
>
>
>
>
> Best Regards
> Guilin Liu
>
> Ph.D. student
> Computer Science Department
> George Mason University
>
> http://masc.cs.gmu.edu/wiki/GuilinLiu​