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#ifndef _CLUSTER_COMPARISONS_HH_
#define _CLUSTER_COMPARISONS_HH_
//----------------------------------------------------------------------
// This file distributed with FastJet has been obtained from
// http://www.pa.msu.edu/~huston/Les_Houches_2005/JetClu+Midpoint-StandAlone.tgz
//
// Permission to distribute it with FastJet has been granted by Joey
// Huston (see the COPYING file in the main FastJet directory for
// details).
// Changes from the original file are listed below.
//----------------------------------------------------------------------
// History of changes compared to the original ClusterComparison.hh file
//
// 2009-01-17 Gregory Soyez <soyez@fastjet.fr>
//
// * put the code in the fastjet::cdf namespace
//
// 2007-03-10 Gavin Salam <salam@lpthe.jussieu.fr>
//
// * added support for the pttilde scale choice in the CDF midpoint code
//
// 2007-02-21 Gavin Salam <salam@lpthe.jussieu.fr>
//
// * added option of choosing the scale used in the split-merge
// procedure (pt [default], Et or mt)
//
// 2006-09-24 Gavin Salam <salam@lpthe.jussieu.fr>
//
// * added JetClu+MidPoint to FastJet
#include "Cluster.hh"
#include <fastjet/internal/base.hh>
FASTJET_BEGIN_NAMESPACE
namespace cdf{
class ClusterFourVectorEtGreater
{
public:
int operator()(const Cluster& c1, const Cluster& c2) const
{
return c1.fourVector.Et() > c2.fourVector.Et();
}
};
class ClusterCentroidEtGreater
{
public:
int operator()(const Cluster& c1, const Cluster& c2) const
{
return c1.centroid.Et > c2.centroid.Et;
}
};
class ClusterPtGreater
{
public:
int operator()(const Cluster& c1, const Cluster& c2) const
{
return c1.fourVector.pt() > c2.fourVector.pt();
}
};
class ClusterMtGreater
{
public:
int operator()(const Cluster& c1, const Cluster& c2) const
{
return c1.fourVector.mt() > c2.fourVector.mt();
}
};
class ClusterPtTildeGreater
{
public:
int operator()(const Cluster& c1, const Cluster& c2) const
{
return c1.pt_tilde > c2.pt_tilde;
}
};
} // namespace cdf
FASTJET_END_NAMESPACE
#endif
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