CGAL users discussion list

["Lehtonen, Matti/HIIT" <>]

H!

Edge collapse were suffering segment fault with missing opposite halfedge in
code similar in example
http://www.cgal.org/Manual/3.5/examples/Surface_mesh_simplification/edge_collapse_constrained_polyhedron.cpp

When also an opposite half edge is checked for border at constraint map,then
this segment fault never happens.

Lehtonen, Matti

Quoting "Lehtonen, Matti/HIIT" 
<>:

> Quoting "Sebastien Loriot (GeometryFactory)" 
> <>:
>
> > Lehtonen, Matti/HIIT wrote:
> > > * Similar bug is located (most likely) in polyhedron_3::is_valid() too.
>
> >  From what I understand of your description, a single triangle seems to
> > be filling the conditions of your bug report.
> > However I already loaded a single triangle in Polyhedron and called
> > is_valid. Do you have an example showing that bug in Polyhedron_3?
>
> I have been using too short and bad wording. I have a C3T3 surface
> <GROUND,AIR>
> of GROUND sub-domain that is invalid as polyhedron (border were okay), 
> before
> writing to OFF file. But after read from OFF file, it were okay. See
> http://www.iki.fi/m-matti-a.lehtonen/limited/Polyhedron_GROUND-DOMAIN.off
>
> Lehtonen, Matti
>
> Researcher, head programmer - Helsinki Institute for Information Technology
> HIIT
> http://www.hiit.fi/
> --
> Life is complex. It has real and imaginary parts.
>
>
>
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Researcher, head programmer - Helsinki Institute for Information Technology 
HIIT
http://www.hiit.fi/
-- 
Life is complex. It has real and imaginary parts.