TrackParticleTruthDecorationAlg.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ACTSTRK_TRACKPARTICLETRUTHDECORATIONALG_H
#define ACTSTRK_TRACKPARTICLETRUTHDECORATIONALG_H 1
 
#undef NDEBUG
// Base Class
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
 
// Gaudi includes
#include "Gaudi/Property.h"
 
// Handle Keys
#include "StoreGate/ReadHandleKey.h"
#include "StoreGate/WriteDecorHandleKeyArray.h"
 
#include "TrackTruthMatchingBaseAlg.h"
#include "ActsEvent/TrackToTruthParticleAssociation.h"
#include "xAODTracking/TrackParticleContainer.h"
#include "MCTruthClassifier/IMCTruthClassifier.h"
 
namespace ActsTrk
{
  class TrackParticleTruthDecorationAlg : public TrackTruthMatchingBaseAlg
  {
  public:
    using TrackTruthMatchingBaseAlg::TrackTruthMatchingBaseAlg;
 
    virtual StatusCode initialize() override;
    virtual StatusCode execute(const EventContext &ctx) const override;
 
  private:
     SG::ReadHandleKeyArray<TrackToTruthParticleAssociation>  m_trackToTruth
        {this, "TrackToTruthAssociationMaps",{},
         "Association maps from tracks to generator particles for all Acts tracks linked from the given track particle." };
 
     SG::ReadHandleKey<xAOD::TrackParticleContainer>  m_trkParticleName
        {this,"TrackParticleContainerName", "InDetTrackParticles",""};

     SG::ReadHandleKey<xAOD::TruthParticleContainer> m_derivateTruthKey{this, "DerivateTruthKey", ""};
 
     enum FloatDecorations { kMatchingProbability, kHitPurity, kHitEfficiency, kNFloatDecorators};
     SG::WriteDecorHandleKeyArray<xAOD::TrackParticleContainer> m_floatDecor{this, "FloatDecorators", {}};
 
     enum IntDecorations {kTruthType, kTruthOrigin, kNIntDecorators};
     SG::WriteDecorHandleKeyArray<xAOD::TrackParticleContainer> m_intDecor{this, "IntDecorators", {}};
     SG::WriteDecorHandleKey<xAOD::TrackParticleContainer> m_truthClassDecor
       {this, "TruthClassification", m_trkParticleName, "truthClassification"};
 
     ToolHandle<IMCTruthClassifier> m_truthClassifier
       {this, "MCTruthClassifier", "MCTruthClassifier/MCTruthClassifier"};
 
     SG::WriteDecorHandleKey<xAOD::TrackParticleContainer> m_linkDecor
       {this, "LinkDecoration", m_trkParticleName, "truthParticleLink"};
 
  };
 
} // namespace
 
#endif