176 lines
6.1 KiB
C++
176 lines
6.1 KiB
C++
// Copyright (c) 2005 Tel-Aviv University (Israel).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Boolean_set_operations_2/include/CGAL/Gps_traits_2.h $
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// $Id: Gps_traits_2.h 7436c14 2020-04-06T01:23:45+03:00 Efi Fogel
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Baruch Zukerman <baruchzu@post.tau.ac.il>
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#ifndef CGAL_GPS_TRAITS_2_H
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#define CGAL_GPS_TRAITS_2_H
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#include <CGAL/license/Boolean_set_operations_2.h>
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#include <CGAL/disable_warnings.h>
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#include <CGAL/General_polygon_2.h>
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#include <CGAL/General_polygon_with_holes_2.h>
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#include <CGAL/Boolean_set_operations_2/Gps_polygon_validation.h>
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#include <CGAL/Boolean_set_operations_2/Gps_traits_adaptor.h>
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namespace CGAL {
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template <typename Arr_traits,
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typename General_polygon_t = General_polygon_2<Arr_traits> >
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class Gps_traits_2 : public Arr_traits
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{
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typedef Arr_traits Base;
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typedef Gps_traits_2<Arr_traits,General_polygon_t> Self;
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public:
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typedef typename Base::Point_2 Point_2;
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typedef typename Base::X_monotone_curve_2 X_monotone_curve_2;
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typedef typename Base::Multiplicity Multiplicity;
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//Polygon_2 type is required by GeneralPolygonSetTraits Concept
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typedef General_polygon_t Polygon_2;
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//Polygon_2 is a model of the GeneralPolygon2 concept
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typedef Polygon_2 General_polygon_2;
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//Polygon_with_holes_2 type required by GeneralPolygonSetTraits Concept.
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typedef CGAL::General_polygon_with_holes_2<General_polygon_2>
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Polygon_with_holes_2;
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//Polygon_with_Holes_2 is a model of the GeneralPolygonWithHoles2 concept.
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typedef Polygon_with_holes_2
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General_polygon_with_holes_2;
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typedef typename General_polygon_2::Curve_const_iterator
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Curve_const_iterator;
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typedef typename General_polygon_with_holes_2::Hole_const_iterator
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Hole_const_iterator;
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typedef typename Base::Equal_2 Equal_2;
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typedef typename Base::Compare_endpoints_xy_2 Compare_endpoints_xy_2;
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typedef typename Base::Construct_min_vertex_2 Construct_min_vertex_2;
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typedef typename Base::Construct_max_vertex_2 Construct_max_vertex_2;
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/*!
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* A functor for constructing a polygon from a range of x-monotone curves.
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*/
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class Construct_polygon_2 {
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public:
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template<class XCurveIterator>
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void operator()(XCurveIterator begin, XCurveIterator end,
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General_polygon_2& pgn) const
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{ pgn.init(begin, end); }
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};
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Construct_polygon_2 construct_polygon_2_object() const
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{ return Construct_polygon_2(); }
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/*!
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* A functor for scanning all x-monotone curves that form a polygon boundary.
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*/
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class Construct_curves_2
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{
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public:
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std::pair<Curve_const_iterator, Curve_const_iterator>
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operator()(const General_polygon_2& pgn) const
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{ return std::make_pair(pgn.curves_begin(), pgn.curves_end()); }
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};
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Construct_curves_2 construct_curves_2_object() const
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{ return Construct_curves_2(); }
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/*!
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* An auxiliary functor used for validity checks.
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*/
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typedef Gps_traits_adaptor<Base> Traits_adaptor;
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/*typedef CGAL::Is_valid_2<Self, Traits_adaptor> Is_valid_2;
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Is_valid_2 is_valid_2_object() const
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{
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Traits_adaptor tr_adp;
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return (Is_valid_2 (*this, tr_adp));
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}*/
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//Added Functionality from GeneralPolygonWithHoles Concept to the traits.
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/*A functor for constructing the outer boundary of a polygon with holes*/
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class Construct_outer_boundary {
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public:
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General_polygon_2 operator()(const General_polygon_with_holes_2& pol_wh)
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const
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{ return pol_wh.outer_boundary(); }
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};
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Construct_outer_boundary construct_outer_boundary_object() const
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{ return Construct_outer_boundary(); }
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/* typedef from General_polygon_with_holes_2. Hole_const_iterator nested type
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* is required by GeneralPolygonWithHoles2 concept
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*/
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/*A functor for constructing the container of holes of a polygon with holes*/
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class Construct_holes {
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public:
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std::pair<Hole_const_iterator, Hole_const_iterator>
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operator()(const General_polygon_with_holes_2& pol_wh) const
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{ return std::make_pair(pol_wh.holes_begin(), pol_wh.holes_end()); }
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};
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Construct_holes construct_holes_object() const
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{ return Construct_holes(); }
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/* A functor for constructing a General_polygon_with_holes from a
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* General_Polygon (and possibly a range of holes).
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*
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* constructs a general polygon with holes using a given general polygon
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* outer as the outer boundary and a given range of holes. If outer is an
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* empty general polygon, then an unbounded polygon with holes will be
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* created. The holes must be contained inside the outer boundary, and the
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* polygons representing the holes must be strictly simple and pairwise
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* disjoint, except perhaps at the vertices.
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*/
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class Construct_general_polygon_with_holes_2 {
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public:
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General_polygon_with_holes_2
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operator()(const General_polygon_2& pgn_boundary) const
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{ return General_polygon_with_holes_2(pgn_boundary); }
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template <class HolesInputIterator>
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General_polygon_with_holes_2
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operator()(const General_polygon_2& pgn_boundary,
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HolesInputIterator h_begin,
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HolesInputIterator h_end) const
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{ return General_polygon_with_holes_2(pgn_boundary, h_begin,h_end); }
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};
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Construct_general_polygon_with_holes_2 construct_polygon_with_holes_2_object()
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const
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{ return Construct_general_polygon_with_holes_2(); }
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// Return true if the outer boundary is empty, and false otherwise.
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class Is_unbounded {
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public:
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bool operator()(const General_polygon_with_holes_2& pol_wh) const
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{ return pol_wh.is_unbounded(); }
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};
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Is_unbounded construct_is_unbounded_object() const { return Is_unbounded(); }
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};
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} //namespace CGAL
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#include <CGAL/enable_warnings.h>
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#endif
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