CGAL users discussion list

[Andreas Fabri <>]

On 13/01/2012 10:12, Veerle wrote:
> Hello,
>
> I'm new to CGAL and I'm trying to use the 3D boolean operation on
> Nef_polyhedron_3.
>
> I was able to construct two objects (surface1 and surface2) by reading
> off-files and converting the polyhedron to Nef_polyhedron_3:
>      Nef_polyhedron_3 surface1;
>      Nef_polyhedron_3 surface2;
>
> Then I substract both surfaces and the result is in result_surface:
>      Nef_polyhedron_3 result_surface = surface1 - surface2;
>
> Now I want to return the result_surface in my function to be able to use it
> in another function. However, since result_surface is no pointer, it gets
> deleted at the moment that I leave my function. Is there a way to return
> this without it being deleted? I was thinking of returning a copy of
> result_surface, but I couldn't find a copy constructor for Nef_polyhedron_3.
>
> Thanks
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/3D-boolean-operation-result-gets-deleted-tp4291727p4291727.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.

Taken that the assignment worked, just return the result from
your function and make an assignment in the calling function.


Nef_polyhedron_3 surface = myFct(surface1, surface2);


andreas

--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri