CGAL users discussion list

[Andrea Borsic <>]

Dear All,

I am a new user of CGAL. I am interested in certain Boolean operations, which I understand can be performed with Nef Polyhedra or with the Corefinement kernel.

I have two separate triangulated, non self-intersecting, manifold surfaces.  These surfaces do intersect each other, and I am interested in getting the union of the two surfaces, where by union I intend the outer surfaces and also the inner surface that results from the fact the the two volumes intersect, and which is bound be the external surfaces. 

Can anyone please indicate me how this can be achieved? The union in CGAL removes the internal surfaces. I have tried to put them back by subtracting one surface from the other, but then I need an union of the result of the subtraction with one of the original meshes, and the union removes again any internal surface that derives from "joining" the two surfaces.

Any help on how to go about this is kindly appreciated. Thank you !

Best,

Andrea