cgal/Classification/include/CGAL/Classification/Feature/Cluster_size.h

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// Copyright (c) 2018 GeometryFactory Sarl (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
// SPDX-License-Identifier: GPL-3.0+
//
// Author(s) : Simon Giraudot
#ifndef CGAL_CLASSIFICATION_FEATURE_CLUSTER_SIZE_H
#define CGAL_CLASSIFICATION_FEATURE_CLUSTER_SIZE_H
#include <CGAL/license/Classification.h>
#include <vector>
#include <CGAL/Classification/Feature_base.h>
namespace CGAL {
namespace Classification {
namespace Feature {
/*!
\ingroup PkgClassificationCluster
\brief %Feature that returns the size of each cluster.
Its default name is "cluster_size".
*/
class Cluster_size : public CGAL::Classification::Feature_base
{
std::vector<float> m_values;
public:
/*!
\brief Constructs the feature.
\tparam ClusterRange model of `ConstRange`. Its iterator type
is `RandomAccessIterator` and its value type is the key type of
`Cluster`.
\param clusters input range.
*/
template <typename ClusterRange>
Cluster_size (ClusterRange& clusters)
{
this->set_name ("cluster_size");
m_values.reserve (clusters.size());
for (std::size_t i = 0; i < clusters.size(); ++ i)
m_values.push_back (float(clusters[i].size()));
}
/// \cond SKIP_IN_MANUAL
virtual float value (std::size_t cluster_index)
{
return m_values[cluster_index];
}
/// \endcond
};
} // namespace Feature
} // namespace Classification
} // namespace CGAL
#endif // CGAL_CLASSIFICATION_FEATURE_CLUSTER_SIZE_H