CGAL users discussion list

[Monique Teillaud <>]

Le 01/04/14 17:53, Zohar a écrit :
> Hi,
>
> This question was asked before several times, and the answer is surprisingly
> not possible. I wanted to verify that.
>
> Let's say I have an existing triangulation (e.g. .off), and I want to load
> it into Triangulation_2. My objective is to take advantage of the methods in
> Triangulation_2, such as point location (which can be done with AABB tree as
> well).
>
> There is an overloaded operator>>, which reads only points, as far as I can
> see, and ignores the connectivity.

Hi

it is not very precisely documented, but it _does_ take connectivity 
into account, otherwise it would be useless even for a "native" CGAL 
triangulation...

the documentation of the 3d case is a bit more verbose:
http://doc.cgal.org/latest/Triangulation_3/classCGAL_1_1Triangulation__3.html#ab94699177389820a3fb07e28961b2989
unless I am mistaken the 2d case is similar

--
Monique Teillaud
http://www.inria.fr/sophia/members/Monique.Teillaud/
INRIA Sophia Antipolis - Méditerranée
Institut National de Recherche en Informatique et Automatique

> So the only way, I can see, is to construct a constrained triangulation
> (constraining the desired connectivity), and deleting redundant faces.
>
> Is this correct? If it is, please consider making the Triangulation_2
> construction more versatile.
>
>
>
> --
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