CGAL users discussion list

[Efraim Fogel <>]

Try to define:

typedef Base_nt Coord_                     type;

instead of

typedef CGAL::Lazy_exact_nt<Base_nt> Coord_type;


 wrote:
> Hi 
> I am very novice with cgal and have a very hard time with all  this templates. 
>
> I got so far , that i got modified the" boolean_operations_2" example  to fit
> for me. 
>
> but when I join , I get some vertex totally wrong . 
> http://i39.tinypic.com/vcvscj.jpg
>
> I then would like to make a very small test app for bug reporting , but
> struggle with reading back the ascii format again : (have appx 221 ) of this
> kind
>
> 6 [62286 122530 --> 59786 125030]
>  [59786 125030 --> 48166 125030]
>  [48166 125030 --> 45666 122530]
>  [45666 122530 --> 48166 120030]
>  [48166 120030 --> 59786 120030]
>  [59786 120030 --> 62286 122530]
>
> Polygon_2  p ;
> instream >>p;	// not possible since  no >> avaible. 
>
> how to do ?? 
> even my kernel supports circle , I only use segment for the moment. 
>
> Best regards
> Buller
>
> my type defs are : 
>  typedef CGAL::Gmpq				       Base_nt;
> typedef CGAL::Lazy_exact_nt<Base_nt>                    Coord_type;
> struct Kernel : public CGAL::Cartesian<Coord_type> {};
>
> typedef Kernel::Segment_2                             Segment;
> typedef Kernel::Point_2                               Point_2;
> typedef Kernel::Circle_2                              Circle;
> typedef Kernel::Iso_rectangle_2                       Iso_rectangle;
>
> 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;
> typedef CGAL::General_polygon_with_holes_2<Polygon_2> Polygon_with_holes;
> typedef CGAL::General_polygon_set_2<Traits>             Polygon_set;
> typedef Polygon_with_holes::Hole_const_iterator       Hole_const_iterator;
>
>
> typedef CGAL::Polygon_2<Kernel>                 Linear_polygon_2;
> typedef CGAL::Polygon_with_holes_2<Kernel>	     
> Linear_polygon_with_holes_2;
>   


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