G4ParticleDecayHelper.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ISF_FATRASTOOLSG4_G4PARTICLEDECAYHELPER_H
#define ISF_FATRASTOOLSG4_G4PARTICLEDECAYHELPER_H
 
// Gaudi & Athena
#include "AthenaBaseComps/AthAlgTool.h"
#include "GaudiKernel/ServiceHandle.h"
#include "GaudiKernel/ToolHandle.h"
#include "AthenaKernel/IAtRndmGenSvc.h"
#include "CxxUtils/checker_macros.h"
// ISF
#include "ISF_Event/ISFParticleContainer.h"
// iFatras
#include "ISF_FatrasInterfaces/IParticleDecayHelper.h"
// STD
#include <vector>
#include <math.h>
 
class StoreGateSvc;
 
namespace ISF {
    class ISFParticle;
    class IParticleBroker;
    class ITruthSvc;
    class IG4RunManagerHelper;
}
 
namespace iFatras {
 
   class ITrackCreator;
   class PDGToG4Particle;
   class IPhysicsValidationTool;

 
  class ATLAS_NOT_THREAD_SAFE G4ParticleDecayHelper : public extends<AthAlgTool, IParticleDecayHelper> {  // deprecated: ATLASSIM-6020
    public:
      G4ParticleDecayHelper(const std::string&,const std::string&,const IInterface*);
      ~G4ParticleDecayHelper();
       
      StatusCode initialize();
      StatusCode finalize();
      
      double freePath(const ISF::ISFParticle& isp) const;

      void decay(const ISF::ISFParticle& isp,
         const Amg::Vector3D& vertex,
         const Amg::Vector3D& mom,
         double timeStamp = 0) const;

      std::vector<ISF::ISFParticle*> decayParticle(const ISF::ISFParticle& parent,
                                                 const Amg::Vector3D& vertex,
                                                 const Amg::Vector3D& mom,
                                                 double timeStamp = 0) const;
 
 
   private:
      bool initG4RunManager() const;
                                  
      void handleDecayParticles(const ISF::ISFParticle& isp, 
                                const ISF::ISFParticleVector& children) const;                             
 
      /*------------------------------------------------------------
       *  ServiceHandles
       *------------------------------------------------------------*/
      ServiceHandle<ISF::IParticleBroker> m_particleBroker;        
      ServiceHandle<ISF::ITruthSvc>       m_truthRecordSvc;        
 
 
      ServiceHandle<IAtRndmGenSvc>        m_rndmSvc;               
      CLHEP::HepRandomEngine*             m_randomEngine;          
      std::string                         m_randomEngineName;      
      std::string                         m_G4RandomEngineName;    
 
      /*------------------------------------------------------------
       *  ToolHandles
       *------------------------------------------------------------*/
      ToolHandle<ISF::IG4RunManagerHelper> m_g4RunManagerHelper;   
      ToolHandle<PDGToG4Particle>         m_pdgToG4Conv;           

      bool                                                         m_validationMode; 
      ToolHandle<IPhysicsValidationTool>                           m_validationTool;   
      
   };
                    
}                   
 
#endif