/usr/include/fastjet/ClusterSequenceVoronoiArea.hh is in libfastjet-dev 3.0.6+dfsg-1.
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// $Id: ClusterSequenceVoronoiArea.hh 2687 2011-11-14 11:17:51Z soyez $
//
// Copyright (c) 2005-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
//
//----------------------------------------------------------------------
// This file is part of FastJet.
//
// FastJet is free software; 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 2 of the License, or
// (at your option) any later version.
//
// The algorithms that underlie FastJet have required considerable
// development and are described in hep-ph/0512210. If you use
// FastJet as part of work towards a scientific publication, please
// include a citation to the FastJet paper.
//
// FastJet is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with FastJet. If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------
//ENDHEADER
#ifndef __FASTJET_CLUSTERSEQUENCEVORONOIAREA_HH__
#define __FASTJET_CLUSTERSEQUENCEVORONOIAREA_HH__
#include "fastjet/PseudoJet.hh"
#include "fastjet/AreaDefinition.hh"
#include "fastjet/ClusterSequenceAreaBase.hh"
#include <memory>
#include <vector>
FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
/// @ingroup sec_area_classes
/// \class ClusterSequenceVoronoiArea
/// Like ClusterSequence with computation of the Voronoi jet area
///
/// Handle the computation of Voronoi jet area.
///
/// This class should not be used directly. Rather use
/// ClusterSequenceArea with the appropriate AreaDefinition
class ClusterSequenceVoronoiArea : public ClusterSequenceAreaBase {
public:
/// template ctor
/// \param pseudojet list of jets (template type)
/// \param jet_def jet definition
/// \param effective_Rfact effective radius
/// \param writeout_combinations ??????
template<class L> ClusterSequenceVoronoiArea
(const std::vector<L> & pseudojets,
const JetDefinition & jet_def,
const VoronoiAreaSpec & spec = VoronoiAreaSpec(),
const bool & writeout_combinations = false);
/// default dtor
~ClusterSequenceVoronoiArea();
/// return the area associated with the given jet
virtual inline double area(const PseudoJet & jet) const {
return _voronoi_area[jet.cluster_hist_index()];}
/// return a 4-vector area associated with the given jet -- stricly
/// this is not the exact 4-vector area, but rather an approximation
/// made of sums of centres of all Voronoi cells in jet, each
/// contributing with a normalisation equal to the area of the cell
virtual inline PseudoJet area_4vector(const PseudoJet & jet) const {
return _voronoi_area_4vector[jet.cluster_hist_index()];}
/// return the error of the area associated with the given jet
/// (0 by definition for a voronoi area)
virtual inline double area_error(const PseudoJet & /*jet*/) const {
return 0.0;}
/// passive area calculator -- to be defined in the .cc file (it will do
/// the true hard work)
class VoronoiAreaCalc;
private:
/// initialisation of the Voronoi Area
void _initializeVA();
std::vector<double> _voronoi_area; ///< vector containing the result
std::vector<PseudoJet> _voronoi_area_4vector; ///< vector containing approx 4-vect areas
VoronoiAreaCalc *_pa_calc; ///< area calculator
double _effective_Rfact; ///< effective radius
};
/// template constructor need to be specified in the header!
//----------------------------------------------------------------------
template<class L> ClusterSequenceVoronoiArea::ClusterSequenceVoronoiArea
(const std::vector<L> &pseudojets,
const JetDefinition &jet_def_in,
const VoronoiAreaSpec & spec,
const bool & writeout_combinations) :
_effective_Rfact(spec.effective_Rfact()) {
// transfer the initial jets (type L) into our own array
_transfer_input_jets(pseudojets);
// run the clustering
_initialise_and_run(jet_def_in,writeout_combinations);
// the jet clustering's already been done, now worry about areas...
_initializeVA();
}
FASTJET_END_NAMESPACE
#endif // __FASTJET_CLUSTERSEQUENCEVORONOIAREA_HH__
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