220 lines
7.0 KiB
C++
Executable File
220 lines
7.0 KiB
C++
Executable File
// 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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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: GPL-3.0+
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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_SEGMENT_TRAITS_2_H
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#define CGAL_GPS_SEGMENT_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/Arr_segment_traits_2.h>
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#include <CGAL/Polygon_2.h>
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#include <CGAL/Polygon_with_holes_2.h>
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#include <CGAL/Boolean_set_operations_2/Polygon_2_curve_iterator.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 < class Kernel_,
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class Container_ = std::vector<typename Kernel_::Point_2>,
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class Arr_seg_traits_ = Arr_segment_traits_2<Kernel_> >
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class Gps_segment_traits_2 : public Arr_seg_traits_
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{
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typedef Arr_seg_traits_ Base;
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typedef Gps_segment_traits_2<Kernel_, Container_, Arr_seg_traits_> Self;
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public:
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// Polygon_2 type is required by GeneralPolygonSetTraits Concept
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typedef CGAL::Polygon_2<Kernel_, Container_> 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 can be a simple polygon , with holes that are
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// entirely inside him , or some vertices of the polygon and its holes
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// may overlap.
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// Polygon_with_holes_2 type required by GeneralPolygonSetTraits Concept.
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typedef CGAL::Polygon_with_holes_2<Kernel_, Container_>
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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 General_polygon_with_holes_2;
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typedef typename Base::X_monotone_curve_2 X_monotone_curve_2;
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typedef Polygon_2_curve_iterator<X_monotone_curve_2, Polygon_2>
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Curve_const_iterator;
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typedef typename Polygon_with_holes_2::Hole_const_iterator
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Hole_const_iterator;
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typedef typename Base::Point_2 Point_2;
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/*!
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* A functor for constructing a polygon from a range of segments.
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*/
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class Construct_polygon_2 {
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typedef Gps_segment_traits_2<Kernel_, Container_, Arr_seg_traits_> Self;
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typedef Gps_traits_adaptor<Self> Traits_adaptor;
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/*! The traits (in case it has state) */
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const Traits_adaptor* m_traits;
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public:
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/*! Constructor
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* \param traits the traits (in case it has state)
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*/
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Construct_polygon_2(const Self* traits) :
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m_traits(static_cast<const Traits_adaptor*>(traits))
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{}
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template <typename XCurveIterator>
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void operator()(XCurveIterator begin, XCurveIterator end, Polygon_2& pgn)
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const
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{
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typename Traits_adaptor::Construct_vertex_2 ctr_v =
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m_traits->construct_vertex_2_object();
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for (XCurveIterator itr = begin; itr != end; ++itr)
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pgn.push_back(ctr_v(*itr, 1));
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}
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};
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Construct_polygon_2 construct_polygon_2_object() const
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{
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return Construct_polygon_2(this);
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}
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/*!
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* A functor for scanning all segments that form a polygon boundary.
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*/
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class Construct_curves_2 {
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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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{
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Curve_const_iterator c_begin(&pgn, pgn.edges_begin());
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Curve_const_iterator c_end(&pgn, pgn.edges_end());
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return (std::make_pair(c_begin, c_end));
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}
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};
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Construct_curves_2 construct_curves_2_object() const
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{
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return Construct_curves_2();
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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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*/
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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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{
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return pol_wh.outer_boundary();
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}
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};
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Construct_outer_boundary construct_outer_boundary_object() const
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{
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return Construct_outer_boundary();
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}
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/* typedef from General_polygon_with_holes_2.
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* Hole_const_iterator nested type is required by
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* 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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* It returns ths begin/end iterators for the holes
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*/
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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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{
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return std::make_pair(pol_wh.holes_begin(), pol_wh.holes_end());
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}
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};
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Construct_holes construct_holes_object() const
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{
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return Construct_holes();
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}
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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 operator()(const General_polygon_2&
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pgn_boundary) const
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{
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return General_polygon_with_holes_2(pgn_boundary);
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}
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template <class HolesInputIterator>
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General_polygon_with_holes_2 operator()(const General_polygon_2&
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pgn_boundary,
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HolesInputIterator h_begin,
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HolesInputIterator h_end) const
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{
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return General_polygon_with_holes_2(pgn_boundary, h_begin,h_end);
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}
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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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{
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return Construct_general_polygon_with_holes_2();
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}
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//functor returns true if the outer boundary is unbounded, 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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{
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return pol_wh.is_unbounded();
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}
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};
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Is_unbounded construct_is_unbounded_object() const
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{
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return Is_unbounded();
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}
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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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