CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

If the orientation of the facets are already correct, you can use the
modifier Polyhedron_copy_3 in CGAL/Polyhedron_copy_3.h setting
clear_target_before to false.

Here is how to use a modifier:
http://doc.cgal.org/latest/Polyhedron/classCGAL_1_1Polyhedron__incremental__builder__3.html

Sebastien.


On 01/29/2014 04:33 PM, Jánosi Zoli wrote:
> Hi, i could appreciate some help.
> I want to combine two sufraces. (off files)
> The inner, and the outer(brain) region of a skull.
>   They are from the same system, but not in contact with each other.
> Like a bigger and a smaller sphere in each other.
> I copied the two off files into one, computed the indicies, and it works
> great like one. I can remesh it,  and it clearly doing a great job.
> Except, the regions are not distinguished, but its important to me.
> But the inner region is a well bounded, closed region.
> I think, that if cgal could find the regions, they would be marked, so
> there is something im doing wrong? I know its not a 100% good idea to do
> this kind of thing, but i have no better idea at now.
> Is there a better way to combine surfaces, and the regions will be marked?
> Thanks for helping me.