mirror of https://github.com/CGAL/cgal
108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
// Copyright (c) 2019 CNRS and LIRIS' Establishments (France).
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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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// Author(s) : Guillaume Damiand <guillaume.damiand@liris.cnrs.fr>
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//
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#ifndef CGAL_CURVES_ON_SURFACE_TOPOLOGY_H
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#define CGAL_CURVES_ON_SURFACE_TOPOLOGY_H 1
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#include <CGAL/license/Surface_mesh_topology.h>
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#include <CGAL/Surface_mesh_topology/internal/Minimal_quadrangulation.h>
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#include <CGAL/Face_graph_wrapper.h>
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namespace CGAL {
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namespace Surface_mesh_topology {
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template<typename Mesh>
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class Curves_on_surface_topology
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{
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public:
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typedef typename internal::CMap_for_minimal_quadrangulation CMap_for_minimal_quadrangulation;
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Curves_on_surface_topology(const Mesh& amap, bool /* display_time */=false) :
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m_original_map(amap),
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m_minimal_quadrangulation(nullptr)
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{}
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~Curves_on_surface_topology()
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{ delete m_minimal_quadrangulation; }
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/// @return true iff 'path' is contractible.
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bool is_contractible(const Path_on_surface<Mesh>& p,
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bool display_time=false) const
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{
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if (m_minimal_quadrangulation==nullptr)
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{
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m_minimal_quadrangulation=
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new internal::Minimal_quadrangulation<Mesh>(m_original_map, display_time);
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}
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return m_minimal_quadrangulation->is_contractible(p, display_time);
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}
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/// @return true iff 'path1' and 'path2' are freely homotopic.
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bool are_freely_homotopic(const Path_on_surface<Mesh>& p1,
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const Path_on_surface<Mesh>& p2,
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bool display_time=false) const
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{
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if (m_minimal_quadrangulation==nullptr)
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{
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m_minimal_quadrangulation=
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new internal::Minimal_quadrangulation<Mesh>(m_original_map, display_time);
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}
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return m_minimal_quadrangulation->are_freely_homotopic(p1, p2,
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display_time);
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}
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/// @return true iff 'path1' and 'path2' are base point freely homotopic.
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bool are_base_point_homotopic(const Path_on_surface<Mesh>& p1,
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const Path_on_surface<Mesh>& p2,
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bool display_time=false) const
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{
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if (m_minimal_quadrangulation==nullptr)
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{
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m_minimal_quadrangulation=
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new internal::Minimal_quadrangulation<Mesh>(m_original_map, display_time);
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}
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return m_minimal_quadrangulation->are_base_point_homotopic(p1, p2,
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display_time);
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}
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bool is_minimal_quadrangulation_computed() const
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{ return m_minimal_quadrangulation!=nullptr; }
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const CMap_for_minimal_quadrangulation& get_minimal_quadrangulation() const
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{
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CGAL_assertion(is_minimal_quadrangulation_computed());
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return m_minimal_quadrangulation->get_map();
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}
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protected:
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const Mesh& m_original_map;
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mutable internal::Minimal_quadrangulation<Mesh>* m_minimal_quadrangulation;
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};
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} // namespace Surface_mesh_topology
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} // namespace CGAL
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#endif // CGAL_CURVES_ON_SURFACE_TOPOLOGY_H //
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// EOF //
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