TruthClosureCheck.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TRUTHCLOSURECHECK_H
#define TRUTHCLOSURECHECK_H
 
// Base class include
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
 
// Athena includes
#include "StoreGate/ReadHandleKey.h"
#include "GeneratorObjects/McEventCollection.h"
 
class TruthClosureCheck : public AthReentrantAlgorithm {
 
public:
  using AthReentrantAlgorithm::AthReentrantAlgorithm;
  virtual StatusCode initialize() override final;
  virtual StatusCode execute(const EventContext& ctx) const override final;
 
private:
  StatusCode sanityCheck(const HepMC::GenEvent& event) const;
  StatusCode compareGenVertex(const HepMC::ConstGenVertexPtr& origVertex,
                              const HepMC::ConstGenVertexPtr& resetVertex) const;
  StatusCode compareGenParticle(const HepMC::ConstGenParticlePtr& origParticle,
                                const HepMC::ConstGenParticlePtr& resetParticle) const;
  void printGenVertex(const HepMC::ConstGenVertexPtr& origVertex,
                      const HepMC::ConstGenVertexPtr& resetVertex) const;
  StatusCode compareMomenta(const HepMC::FourVector& origMomenta,
                            const HepMC::FourVector& resetMomenta) const;
 
  SG::ReadHandleKey<McEventCollection> m_originalMcEventCollection{this, "OriginalMcEventCollection" , "BeamTruthEvent"};
  SG::ReadHandleKey<McEventCollection> m_resetMcEventCollection{this, "ResetMcEventCollection" , "NewTruthEvent"};
  Gaudi::Property<bool> m_compareMomenta{this, "CompareMomenta", true};
  double m_momentaLimit{0.000000000001};
  Gaudi::Property<bool> m_postSimulation{this, "PostSimulation", false};
};
#endif