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File indexing completed on 2025-01-18 09:55:23
0001 //========================================================================== 0002 // AIDA Detector description implementation 0003 //-------------------------------------------------------------------------- 0004 // Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN) 0005 // All rights reserved. 0006 // 0007 // For the licensing terms see $DD4hepINSTALL/LICENSE. 0008 // For the list of contributors see $DD4hepINSTALL/doc/CREDITS. 0009 // 0010 // Author : M.Frank 0011 // 0012 //========================================================================== 0013 0014 #ifndef DDG4_GEANT4GENERATORACTIONINIT_H 0015 #define DDG4_GEANT4GENERATORACTIONINIT_H 0016 0017 // Framework include files 0018 #include <DDG4/Geant4GeneratorAction.h> 0019 0020 // Forward declarations 0021 class G4Event; 0022 class G4Run; 0023 0024 /// Namespace for the AIDA detector description toolkit 0025 namespace dd4hep { 0026 0027 /// Namespace for the Geant4 based simulation part of the AIDA detector description toolkit 0028 namespace sim { 0029 0030 /// Initialize the Geant4Event objects to host generator and MC truth related information 0031 /** Geant4 actions to collect the MC particle information. 0032 * 0033 * This action should register all event extension required for the further 0034 * processing. We want to avoid that every client has to check if a given 0035 * object is present or not and than later install the required data structures. 0036 * 0037 * These by default are extensions of type: 0038 * -- Geant4PrimaryEvent with multiple interaction sections, one for each interaction 0039 * This is the MAIN and ONLY information to feed Geant4 0040 * 0041 * -- Geant4PrimaryInteraction containing the track/vertex information to create 0042 * the primary particles for Geant4. This record is build from the Geant4PrimaryEvent 0043 * information. 0044 * -- Geant4PrimaryMap a map of the Geant4Particles converted to G4PrimaryParticles 0045 * to ease particle handling later. 0046 * -- Geant4ParticleMap the map of particles created during the event simulation. 0047 * This map has directly the correct particle offsets, so that the merging of 0048 * Geant4PrimaryInteraction particles and the simulation particles is easy.... 0049 * 0050 * \author M.Frank 0051 * \version 1.0 0052 * \ingroup DD4HEP_SIMULATION 0053 */ 0054 class Geant4GeneratorActionInit : public Geant4GeneratorAction { 0055 protected: 0056 /// Current run identifier 0057 int m_run { 0 }; 0058 /// Counter for total number of events 0059 int m_evtTotal { 0 }; 0060 /// Counter for total number of events in current run 0061 int m_evtRun { 0 }; 0062 public: 0063 /// Standard constructor 0064 Geant4GeneratorActionInit(Geant4Context* context, const std::string& nam); 0065 /// Default destructor 0066 virtual ~Geant4GeneratorActionInit(); 0067 /// Event generation action callback 0068 virtual void operator()(G4Event* event); 0069 /// Begin-run action callback 0070 void begin(const G4Run* run); 0071 /// End-run action callback 0072 void end(const G4Run* run); 0073 0074 }; 0075 } // End namespace sim 0076 } // End namespace dd4hep 0077 0078 #endif // DDG4_GEANT4GENERATORACTIONINIT_H
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