CGAL users discussion list

[Guillaume Damiand <>]

Le 25/06/2015 15:19, Pranav a écrit :
> Hi Guilliame,
>
>
> Guillaume Damiand wrote
> > Hi pravav,
> >
> > Without more code, it is impossible for me to suggest anything...
> Specifically, the segmentation fault occurs at  this line
> <https://github.com/pranavkantgaur/CDTGenerator/blob/TDD/src/cdtGen.cpp#L1295>
> , but the code is a mess so meanwhile, I am trying to create a minimal code
> example demonstrating this problem.

It is once again the same problem:

in the loop line 1521, you iterate throu the lcc, and inside this loop 
removes a cell (line 1526) which invalidates the first loop.

Here the solution is, as previously, push in a container one dart per 
cell to remove, and in a second loop iterate through this container to 
apply remove_cell.


> Guillaume Damiand wrote
> > A last remark: if you are in 3D and if you want to have one dart per
> > each vertex of a given face, a better possibility is to use:
> >
> >
> > for (LCC::Dart_of_orbit_range<1>::iterator pHandleBegin =
> > lcc.darts_of_orbit<1>(fHandle).begin(), pHandleEnd =
> > lcc.darts_of_orbit<1>(fHandle).end(); pHandleBegin !=
> > pHandleEnd; pHandleBegin++)
> Segmentation fault disappeared using Dart_of_orbit_range as you suggested.

It is just lucky ;)

You can do the same optimisation line 1302.


> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Linear-cell-complex-Segmentation-fault-while-accessing-vertex-of-a-2-cell-tp4660939p4660941.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.


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Guillaume DAMIAND

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