CGAL users discussion list

[Giles Puckett <>]

Thanks Sebastien,

Unfortunately remove_self_intersections returns false (and the mesh is 
unchanged, still returning the same self intersections as before). This 
is with CGAL 5.5.1, if anything has changed since.

G.

On 19/07/2023 3:54 pm, Sebastien Loriot ( via 
cgal-discuss Mailing List) wrote:
> Hello,
>
> you can try 
> CGAL::Polygon_mesh_processing::experimental::remove_self_intersections()
> provided by CGAL/Polygon_mesh_processing/repair_self_intersections.h.
>
> If you only have local self-intersection, it usually works very well.
>
> For listing all intersecting triangles use `self_intersection()`
> https://doc.cgal.org/latest/Polygon_mesh_processing/group__PMP__intersection__grp.html#ga6c5bed399d14ddbba820ce50d3145712 
>
>
> HTH,
>
> Sebastien.
>
> On 7/19/23 07:04, Giles Puckett wrote:
> > Hello all,
> > I have a triangle mesh that contains self-intersections 
> > (PMP::does_self_intersect returns true) but it is otherwise manifold. 
> > Is there an easy way to repair these meshes?
> >
> > If not, would it work to enumerate all the self-intersecting 
> > triangles, delete them from the mesh, and fill the holes left behind? 
> > Is there a good way to do this, or would some other method work better?
> >
> > I suspect that the affected area is very small, so gross physical 
> > distortion is unlikely to result.