CGAL users discussion list

[Kim <>]

Hi Bernd..

thank for your interst , sorry I totally missed your post ...


>>What kernel are you using? Please read the following FAQ item to see 
>>whether it is related to your problem: 
>>>>http://www.cgal.org/FAQ.html#inexact_NT.

what I can see I use safe CGAL::Gmpq . is that correct that it is good enough 
?

best regards
Kim

my typedefs :

typedef CGAL::Gmpq                                    Base_nt;
typedef CGAL::Lazy_exact_nt<Base_nt>                  Coord_type;

struct Kernel : public CGAL::Cartesian<Coord_type> {};

typedef Kernel::Point_2                               Point_2;
typedef Kernel::Circle_2                              Circle;
typedef CGAL::Gps_circle_segment_traits_2<Kernel>     Traits;
typedef Traits::Curve_2                               Curve;
typedef Traits::X_monotone_curve_2                    XCurve;
typedef Traits::Point_2                               Circular_point_2;
typedef Traits::Polygon_2                             Polygon_2;


On Thu, May 14, 2009 at 9:39 AM, Bernd Gaertner 
<>
 wrote:
> Kim wrote:
>>
>> Hi
>> sorry ! this is a repost ,,,  but I am really stopped.
>>
>> noone has any idear at all ? any clue is appreciated!
>> I am sure the start and endpoint are the same ,, since if I input the
>> same , just as linesegment then it works perfect.
>>
>> Why is the polygon below failing when
>> trying to
>> if (pgn.orientation()==CGAL::CLOCKWISE )   <-- fails with error , see
>> below
>> Precondition violation.
>
> What kernel are you using? Please read the following FAQ item to see whether
> it is related to your problem: http://www.cgal.org/FAQ.html#inexact_NT.
>
> Best,
> Bernd.
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