CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Self-intersections are an issue near the overlap region so
you probably did not have the problem because the operation
was far from the non-manifold edges. There is the named parameter
throw_on_self_intersection() that will let you know when there
is a problem.

Sebastien.

On 3/13/20 11:03 AM, J. Scheurich wrote:
> > Your inputs are now triangle surface meshes, good, but they are
> > strongly self-intersected. It is a documented pre-condition for
> > refinement that both input are not self-intersecting and are bounding
> > a volume.
> > And They must be 2-manifold. It means for example that you cannot
> > consider 2 cubes glued together into one mesh, you need to remove the
> > internal face so that an edge only has 2 faces attached to it. Here,
> > at several places in reduced1.off, there are sorts of internal panels
> > separating the volume. This is probably the problem that triggers your
> > current assertion.
> Strange, a similar dataset was working in past in Ubuntu 18.04 LTS
>
> https://www.pro-linux.de/artikel/2/image/1991/15549,bild-16-boolean-operationen.html
> https://www.pro-linux.de/artikel/2/image/1991/15550,bild-17-boolean-operationen.html
>
> so long
> MUFTI