mirror of https://github.com/CGAL/cgal
146 lines
4.5 KiB
C++
146 lines
4.5 KiB
C++
// Copyright (c) 2019 GeometryFactory Sarl (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) : Simon Giraudot
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#ifndef CGAL_KSR_3_EVENT_QUEUE_H
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#define CGAL_KSR_3_EVENT_QUEUE_H
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//#include <CGAL/license/Kinetic_shape_reconstruction.h>
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#include <CGAL/KSR/utils.h>
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#include <CGAL/KSR_3/Event.h>
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#include <boost/multi_index_container.hpp>
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#include <boost/multi_index/ordered_index.hpp>
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#include <boost/multi_index/identity.hpp>
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#include <boost/multi_index/member.hpp>
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namespace CGAL
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{
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namespace KSR_3
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{
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template <typename Data>
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class Event_queue
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{
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public:
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typedef typename Data::Kernel Kernel;
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typedef typename Kernel::FT FT;
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typedef typename Data::PVertex PVertex;
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typedef typename Data::PEdge PEdge;
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typedef typename Data::PFace PFace;
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typedef typename Data::IVertex IVertex;
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typedef typename Data::IEdge IEdge;
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typedef KSR_3::Event<Data> Event;
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private:
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typedef boost::multi_index_container
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<Event,
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boost::multi_index::indexed_by<
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boost::multi_index::ordered_non_unique
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<boost::multi_index::member<Event, FT, &Event::m_time> >,
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boost::multi_index::ordered_non_unique
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<boost::multi_index::member<Event, PVertex, &Event::m_pvertex> >,
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boost::multi_index::ordered_non_unique
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<boost::multi_index::member<Event, PVertex, &Event::m_pother> >
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>
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> Queue;
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typedef typename Queue::iterator Queue_iterator;
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typedef typename Queue::template nth_index<0>::type Queue_by_time;
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typedef typename Queue_by_time::iterator Queue_by_time_iterator;
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typedef typename Queue::template nth_index<1>::type Queue_by_pvertex_idx;
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typedef typename Queue_by_pvertex_idx::iterator Queue_by_pvertex_idx_iterator;
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typedef typename Queue::template nth_index<2>::type Queue_by_pother_idx;
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typedef typename Queue_by_pother_idx::iterator Queue_by_pother_idx_iterator;
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Queue m_queue;
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public:
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Event_queue() { }
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bool empty() const { return m_queue.empty(); }
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std::size_t size() const { return m_queue.size(); }
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void push (const Event& ev)
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{
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CGAL_KSR_CERR(4) << "**** Pushing " << ev << std::endl;
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m_queue.insert (ev);
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}
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const Queue_by_time& queue_by_time() const { return m_queue.template get<0>(); }
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const Queue_by_pvertex_idx& queue_by_pvertex_idx() const { return m_queue.template get<1>(); }
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const Queue_by_pother_idx& queue_by_pother_idx() const { return m_queue.template get<2>(); }
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Queue_by_time& queue_by_time() { return m_queue.template get<0>(); }
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Queue_by_pvertex_idx& queue_by_pvertex_idx() { return m_queue.template get<1>(); }
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Queue_by_pother_idx& queue_by_pother_idx() { return m_queue.template get<2>(); }
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Event pop ()
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{
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Queue_iterator iter = queue_by_time().begin();
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Event out = *iter;
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m_queue.erase(iter);
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if (queue_by_time().begin()->m_time == out.m_time)
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std::cerr << "WARNING: next Event is happening at the same time" << std::endl;
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else if (std::abs(queue_by_time().begin()->m_time - out.m_time) < 1e-15)
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std::cerr << "WARNING: next Event is happening at almost the same time" << std::endl;
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return out;
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}
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void print() const
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{
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for (const Event& e : m_queue)
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std::cerr << e << std::endl;
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}
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void erase_vertex_events (PVertex pvertex)
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{
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{
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std::pair<Queue_by_pvertex_idx_iterator, Queue_by_pvertex_idx_iterator>
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range = queue_by_pvertex_idx().equal_range(pvertex);
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for (const auto& ev : CGAL::make_range(range))
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CGAL_KSR_CERR(4) << "**** Erasing " << ev << std::endl;
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queue_by_pvertex_idx().erase (range.first, range.second);
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}
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{
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std::pair<Queue_by_pother_idx_iterator, Queue_by_pother_idx_iterator>
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range = queue_by_pother_idx().equal_range(pvertex);
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for (const auto& ev : CGAL::make_range(range))
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CGAL_KSR_CERR(4) << "**** Erasing " << ev << std::endl;
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queue_by_pother_idx().erase (range.first, range.second);
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}
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}
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};
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}} // namespace CGAL::KSR_3
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#endif // CGAL_KSR_3_EVENT_QUEUE_H
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