SimBarCode.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 

//                                                            //
//  Header file for class SimBarCode                          //
//                                                            //
//  Description: Identifier for truth particle                //
//                                                            //
//  Author: Thomas H. Kittelmann (Thomas.Kittelmann@cern.ch)  //
//  Initial version: April 2008                               //
//                                                            //
 
#ifndef SIMBARCODE_H
#define SIMBARCODE_H
 
#include "GeneratorObjects/HepMcParticleLink.h"
 
class SimBarCode {
public:
 
  static const int unknownPDG = -999;//Fixme: Better choice? 0?
 
  SimBarCode(int barCode, HepMcParticleLink::index_type evtIndex, int pdgCode);
  SimBarCode(const HepMcParticleLink&, int pdgCode);
  ~SimBarCode(){}
 
  inline int barCode() const;//For non-unique secondaries, this will return a negative number, which should not be presented to the user.
  inline int actualBarCode() const;//The original present in the simhit
  inline HepMcParticleLink::index_type evtIndex() const;
  inline int pdgCode() const;
  inline bool unknownPdgCode() const { return m_pdgCode==unknownPDG; }
 
  inline bool isNonUniqueSecondary() const;
 
  //For sorting (Does consider pdgCodes, even when one is unknown):
  inline bool operator<(const SimBarCode&) const;
 
  typedef std::pair<int,HepMcParticleLink::index_type> ExtBarCode;
  ExtBarCode extBarCode() const { return ExtBarCode(barCode(),evtIndex()); }
 
 
private:
  int m_barCode;
  HepMcParticleLink::index_type m_evtIndex;
  int m_pdgCode;
};
 
 
#include "VP1TrackSystems/SimBarCode.icc"
 
#endif