CGAL users discussion list

["??????????" <>]

CGAL????????oFileT << T;????T????????????????txt????????????????????

------------------ ???????? ------------------

??????: "??????????"<>;

????????: 2013??4??17??(??????) ????10:12

??????: "cgal-discuss"; "cgal-discuss";

????: Re: [cgal-discuss] [Arr_polyline_traits_2] Unhandled precondition

CGAL????????????????????????????????????txt????????????????finite_facets_begin()????????????????????????????????

------------------ Original ------------------

From: "Efi Fogel";

Date: 2013??4??17??(??????) ????5:39

To: "cgal-discuss";

Subject: Re: [cgal-discuss] [Arr_polyline_traits_2] Unhandled precondition

I cannot reproduce.
Did you mean something like the following:

Arrangement_2 arr;
Traits_2::X_monotone_curve_2 pi;
Kernel::Segment_2 seg(Point_2(0, 0), Point_2(1, 0));
pi.push_back(seg);
insert(arr, pi);

This works fine for me.

On Mon, Apr 15, 2013 at 6:15 PM, Tapadi <> wrote:

Hello all,

The method CGAL::Arr_polyline_traits_2<SegmentTraits>::Curve_2::push_back
has a precondition: the Curve_2 object has to be non empty. If push_back is
called
while the Curve_2 is empty, it causes a segmentation fault.

I use this configuration:

typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
typedef CGAL::Arr_segment_traits_2<Kernel>
Segment_traits;
typedef CGAL::Arr_polyline_traits_2<Segment_traits> Traits;
typedef Traits::Curve_2
Polyline_2;

Does the problem occur only in my case ? Should it be a CGAL::precondition
violation
instead of a segfault?

Anyway, thanks for the work done for the whole Arrangement_2 package. It is
really
helping me a lot.

Best regards,
Hugo Loi
PhD student at Inria - Maverick Team



--
View this message in context: http://cgal-discuss.949826.n4.nabble.com/Arr-polyline-traits-2-Unhandled-precondition-tp4657203.html
Sent from the cgal-discuss mailing list archive at Nabble.com.

--
You are currently subscribed to cgal-discuss.
To unsubscribe or access the archives, go to
https://sympa.inria.fr/sympa/info/cgal-discuss

--

____ _ ____ _
/_____/_) o /__________ __ //
(____ ( ( ( (_/ (_/-(-'_(/
_/