The traits class Gps_traits_2<ArrTraits,GeneralPolygon_t> models the concept GeneralPolygonSetTraits_2. It inherits from the instantiated type of the template parameter ArrTraits, which must model the concept ArrangementDirectionalXMonotoneTraits, (which in turn refines the concept ArrangementXMonotoneTraits). The template parameter GeneralPolygon_t must be instantiated with a model of the concept of GpsTraitsGeneralPolygon_2. By default, the latter is instantiated by CGAL::General_polygon_2<ArrTraits>.

#include <CGAL/Gps_traits_2.h>

Is Model for the Concepts