CGAL users discussion list

[Nicklas SB Karlsson <>]

Also have performance problem but for me it is with 2D polygons. Not sure 
what take a lot execution but might be because
of plenty of allocation and de allocation of memory.

Nicklas Karlsson


mån 2024-03-18 klockan 21:58 +0100 skrev Biye Yang:
> Hi, all:
> 
> I want to compute the interactions between lots of 3D polyhedrons using 
> CGAL. It becomes low efficient when facing
> hundreds of objects. So I tried to parallel the code with the simple 
> multi-thread OpenMP. But the segmentation fault
> always occur. Here is the code of the simple case:
> 
> #pragma omp_parallel_for
>  for(int i=0; i<Object.size(); i++)
> {
>       CGSurfaceMesh smesh_insect;
>       bool valid_intersect = 
> CGAL::Polygon_mesh_processing::corefine_and_compute_intersection(Object[i],
> TargertObject, smesh_insect);
> }
> 
> I don't know how to figure that out. And do you have any suggestions on 
> improving efficiency when handling hundreds of
> 3D intersections using CGAL?
> Thanks a lot!
> 
> Best wishes,
> Daye
> 
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