CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 02/03/2015 01:49 PM, Dominik Szczerba wrote:
> Hi,
>
> Has the official version fixing this bug already been released?

It will be integration in the 4.6 release of CGAL which beta should
be release this month.

Sebastien.

> Thanks
> Dominik
>
> 2014-12-08 17:47 GMT+01:00 Jane Tournois 
> <>:
> > Dear Bryn,
> >
> > we have fixed the bug you pointed out. The fix will be available in the next
> > public release of CGAL.
> >
> > Thanks again.
> > Best regards,
> >
> > Jane.
> >
> > Le 20/10/2014 08:57, Bryn Lloyd a écrit :
> > > Dear Jane
> > >
> > > Thanks, Bryn
> > >
> > >
> > >
> > > On 10/17/2014 8:55 AM, Jane Tournois wrote:
> > > > Dear Bryn,
> > > >
> > > > thanks for the patch you suggested.
> > > >
> > > > I will take care of this and keep you informed of its integration to
> > > > CGAL.
> > > >
> > > > Best regards,
> > > > Jane.
> > > >
> > > > Le 14/10/2014 09:38, Bryn Lloyd a écrit :
> > > > > Dear CGAL developers
> > > > >
> > > > > I would like to submit a patch for a problem which occurs when
> > > > > generating a 3D mesh from very large images. The detailed information is
> > > > > below:
> > > > >
> > > > > OS, compiler:
> > > > > - Windows 7 & 8, Visual Studio 2012
> > > > >
> > > > > Build options:
> > > > > - Configured using cmake for VS 2012, without GMP, without ZLIB
> > > > >
> > > > > Description of the problem:
> > > > > - Generating meshes from very large image (approx. 4e9 voxels) was not
> > > > > working as expected. Sometimes one half of the image was meshed correctly,
> > > > > but strange things were happening to the other half.
> > > > >
> > > > > Kernel (3D Mesh Generation from images/label fields):
> > > > > - I was using an old version of CGAL (3.8), however, looking at the
> > > > > newest version I can see that issue has not been fixed.
> > > > >
> > > > > Solution:
> > > > > - After debugging a bit, I found that the function
> > > > > 'Image_3::labellized_trilinear_interpolation' was using 'unsigned int'
> > > > > instead of e.g. 'std::uint64_t' or size_t. This causes an integer overflow,
> > > > > which breaks mesh generation.
> > > > > Changing the code in Image_3.h and Image_to_labeled_function_wrapper.h
> > > > > to use size_t fixed the issue.
> > > > >
> > > > > I attached a patch.
> > > > >
> > > > > Best regards
> > > > > Bryn
> >
> >
> > --
> > Jane Tournois, PhD
> > R&D Engineer at GeometryFactory
> > http://www.geometryfactory.com/
> >
> >
> > --
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