mirror of https://github.com/CGAL/cgal
147 lines
3.2 KiB
C++
147 lines
3.2 KiB
C++
// Copyright (c) 2017 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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//
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// Author(s) : Simon Giraudot
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#ifndef CGAL_CLASSIFICATION_FEATURE_SET_H
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#define CGAL_CLASSIFICATION_FEATURE_SET_H
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#include <CGAL/Classification/Feature_base.h>
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#ifdef CGAL_LINKED_WITH_TBB
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#include <tbb/mutex.h>
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#endif // CGAL_LINKED_WITH_TBB
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#include <vector>
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namespace CGAL {
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namespace Classification {
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/*!
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\ingroup PkgClassificationFeature
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\brief Set of features (see `Feature_base`) used as input by
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classification algorithms. This class handles both the instantiation,
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the addition and the deletion of features.
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*/
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class Feature_set
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{
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typedef std::vector<Feature_handle> Base;
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Base m_features;
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#ifdef CGAL_LINKED_WITH_TBB
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tbb::mutex m_mutex;
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void mutex_lock() { m_mutex.lock(); }
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void mutex_unlock() { m_mutex.unlock(); }
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#else // CGAL_LINKED_WITH_TBB
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void mutex_lock() { }
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void mutex_unlock() { }
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#endif // CGAL_LINKED_WITH_TBB
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public:
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Feature_set() { }
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/// \cond SKIP_IN_MANUAL
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virtual ~Feature_set() { }
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/// \endcond
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/*!
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\brief Instantiates a new feature and adds it to the set.
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\tparam Feature type of the feature, inherited from
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`Feature_base`.
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\tparam T types of the parameters of the feature's constructor.
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\param t parameters of the feature's constructor.
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\return a handle to the newly added feature.
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*/
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template <typename Feature, typename ... T>
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Feature_handle add (T&& ... t)
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{
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Feature_handle fh (new Feature(std::forward<T>(t)...));
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mutex_lock();
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m_features.push_back (fh);
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mutex_unlock();
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return fh;
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}
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/*!
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\brief Removes a feature.
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\param feature the handle to feature type that must be removed.
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\return `true` if the feature was correctly removed, `false` if
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its handle was not found.
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*/
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bool remove (Feature_handle feature)
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{
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for (std::size_t i = 0; i < m_features.size(); ++ i)
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if (m_features[i] == feature)
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{
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m_features.erase (m_features.begin() + i);
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return true;
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}
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return false;
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}
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/*!
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\brief Returns how many features are defined.
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*/
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std::size_t size() const
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{
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return m_features.size();
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}
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/*!
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\brief Returns the \f$i^{th}\f$ feature.
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*/
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Feature_handle operator[](std::size_t i) const
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{
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return m_features[i];
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}
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/*!
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\brief Removes all features.
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*/
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void clear ()
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{
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m_features.clear();
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}
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/// \cond SKIP_IN_MANUAL
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void free_memory(std::size_t i)
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{
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m_features[i] = Feature_handle();
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}
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/// \endcond
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};
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} // namespace Classification
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} // namespace CGAL
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#endif // CGAL_CLASSIFICATION_FEATURE_SET_H
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