FatrasG4Tool.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef G4FASTSIMULATION_FATRASG4TOOL_H
#define G4FASTSIMULATION_FATRASG4TOOL_H
 
#include "HitManagement/HitCollectionMap.h"
 
/* Fast simulation base include */
#include "G4AtlasTools/FastSimulationBase.h"
 
/* Geant4 ACTSFatras G4 Tool */
#include "G4AtlasInterfaces/IActsFatrasG4Tool.h"
 
// Hits writing
#include "StoreGate/WriteHandleKey.h"
#include "InDetSimEvent/SiHitCollection.h"
#include "InDetSimEvent/SiHit.h"
 
class G4VFastSimulationModel;
class FatrasG4Tool: public FastSimulationBase
{
public:
 
  FatrasG4Tool(const std::string& type, const std::string& name, const IInterface *parent);   
 
protected:
 
  // ==============================
  // Exposed FastSimulation lifecycle hooks
  // ==============================
  virtual StatusCode initializeFastSim() override final;
  virtual StatusCode BeginOfAthenaEvent(HitCollectionMap&) override final;
  virtual StatusCode EndOfAthenaEvent(HitCollectionMap&) override final;
 
  virtual G4VFastSimulationModel* makeFastSimModel() override final;  
 
 private:
  
  // Flag to enable G4 transportation
  Gaudi::Property<bool> m_doG4Transport{this, "doG4Transport", false, "Flag to enable G4 transportation"};
 
  // Geant4 ACTSFatras G4 Tool
  PublicToolHandle<IActsFatrasG4Tool> m_ActsFatrasG4Tool{this, "ActsFatrasG4Tool", "ActsFatrasG4Tool", ""};
 
  // ==============================
  // Write handles owned by this tool
  // ==============================
  SG::WriteHandleKey<SiHitCollection> m_pixelHitsKey{
      this,
      "PixelCollectionName",
      "PixelHits_ActsFatrasG4",
      "StoreGate key for Pixel SiHitCollection"
  };
 
  SG::WriteHandleKey<SiHitCollection> m_sctHitsKey{
      this,
      "SCTCollectionName",
      "SCT_Hits_ActsFatrasG4",
      "StoreGate key for SCT SiHitCollection"
  };  
};
 
#endif //G4FASTSIMULATION_FATRASG4TOOL_H