HepMCTruthReader.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef HEPMCTRUTHREADER_H
#define HEPMCTRUTHREADER_H
 
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
 
#include "AtlasHepMC/GenEvent_fwd.h"
#include "AtlasHepMC/GenVertex_fwd.h"
#include "AtlasHepMC/GenParticle_fwd.h"
#include "StoreGate/ReadHandleKey.h"
 
#include "GeneratorObjects/McEventCollection.h"
 

class HepMCTruthReader : public AthReentrantAlgorithm {
public:

  HepMCTruthReader(const std::string& name, ISvcLocator* svcLoc);

  virtual StatusCode initialize();

  virtual StatusCode execute(const EventContext& ctx) const;
 
 
private:

  SG::ReadHandleKey<McEventCollection> m_hepMCContainerKey{
      this, "HepMCContainerKey", "GEN_EVENT", "The input McEvenCollection"};

  Gaudi::Property<bool> m_do4momPtEtaPhi{this, "Do4momPtEtaPhi", false};
 
  static void printEvent(const HepMC::GenEvent* evt,                bool do4momPtEtaPhi);
  static void printVertex(const HepMC::ConstGenVertexPtr& vtx,      bool do4momPtEtaPhi );
  static void printParticle(const HepMC::ConstGenParticlePtr& part, bool do4momPtEtaPhi);
 
}; // class HepMCTruthReader
 
 
 
#endif // HEPMCTRUTHREADER_H