SortTool.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
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// ******************************************************
// DecayTreeFitter Package
// We thank the original author Wouter Hulsbergen
// (BaBar, LHCb) for providing the sources.
// http://arxiv.org/abs/physics/0503191v1 (2005)
// Adaptation & Development for PANDA: Ralf Kliemt (2015)
// ******************************************************
//
//  SortTool.h
//  TreeFitter
//
//  Created by Ralf Kliemt on 26/01/15.
//  Copyright (c) 2015 Ralf Kliemt. All rights reserved.
//

#ifndef TREEFITTER_SORTTOOL_H
#define TREEFITTER_SORTTOOL_H 1

#include "ParticleBase.h"
#include "RecoTrack.h"

namespace DecayTreeFitter {
inline bool sortByType(const ParticleBase *lhs, const ParticleBase *rhs)
{
  int lhstype = lhs->type();
  int rhstype = rhs->type();
  bool rc = false;
  if (lhstype == rhstype && lhstype == ParticleBase::kRecoTrack)
    rc = lhs->particle()->Pt() > rhs->particle()->Pt();
  else if (lhs->particle()->NDaughters() > 0 && rhs->particle()->NDaughters() > 0)
    rc = lhs->nFinalChargedCandidates() > rhs->nFinalChargedCandidates();
  else
    rc = lhstype < rhstype;
  return rc;
}
inline bool compTrkTransverseMomentum(const RecoTrack *lhs, const RecoTrack *rhs)
{
  return lhs->particle()->Pt() > rhs->particle()->Pt();
}
} // namespace DecayTreeFitter
#endif