include/Geant4/G4ImportanceProcess.hh

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0025 //
0026 // G4ImportanceProcess
0027 //
0028 // Class description:
0029 //
0030 // Used internally by importance sampling in the "mass" geometry.
0031 // This process is a forced post step process. It will apply
0032 // importance sampling if the particle crosses a boundary in the
0033 // "mass" geometry.
0034
0035 // Author: Michael Dressel, 2002
0036 // --------------------------------------------------------------------
0037 #ifndef G4ImportanceProcess_hh
0038 #define G4ImportanceProcess_hh 1
0039
0040 #include "G4VProcess.hh"
0041 #include "G4VTrackTerminator.hh"
0042 #include "G4VTouchable.hh"
0043
0044 class G4SamplingPostStepAction;
0045 class G4VImportanceAlgorithm;
0046 class G4VIStore;
0047
0048 class G4Step;
0049 class G4Navigator;
0050 class G4TransportationManager;
0051 class G4PathFinder;
0052
0053 #include "G4FieldTrack.hh"
0054 #include "G4TouchableHandle.hh"
0055 #include "G4MultiNavigator.hh"   // For ELimited enum
0056
0057 class G4ImportanceProcess : public G4VProcess, public G4VTrackTerminator
0058 {
0059
0060  public:
0061
0062   G4ImportanceProcess(const G4VImportanceAlgorithm &aImportanceAlgorithm,
0063                       const G4VIStore &aIstore,
0064                       const G4VTrackTerminator *TrackTerminator,
0065                       const G4String &aName = "ImportanceProcess",
0066                             G4bool para = false);
0067     // creates a G4ParticleChange
0068
0069   virtual ~G4ImportanceProcess();
0070     // delete the G4ParticleChange
0071
0072   G4ImportanceProcess(const G4ImportanceProcess &) = delete;
0073   G4ImportanceProcess &operator=(const G4ImportanceProcess &) = delete;
0074
0075   //--------------------------------------------------------------
0076   // Set Parallel World
0077   //--------------------------------------------------------------
0078
0079   void SetParallelWorld(const G4String& parallelWorldName);
0080
0081   //--------------------------------------------------------------
0082   //     Process interface
0083   //--------------------------------------------------------------
0084
0085   void StartTracking(G4Track*);
0086
0087
0088   virtual G4double
0089   PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
0090                                        G4double previousStepSize,
0091                                        G4ForceCondition* condition);
0092     // make process beeing forced
0093
0094   virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
0095     // manage the importance sampling in the "mass" geometry
0096
0097   virtual void KillTrack() const;
0098     // used in case no scoring process follows that does the killing
0099
0100   virtual const G4String& GetName() const;
0101
0102   //  no operation in  AtRestDoIt and  AlongStepDoIt
0103
0104   virtual G4double
0105   AlongStepGetPhysicalInteractionLength(const G4Track&,
0106                                         G4double  ,
0107                                         G4double  ,
0108                                         G4double& ,
0109                                         G4GPILSelection*);
0110   virtual G4double
0111   AtRestGetPhysicalInteractionLength(const G4Track& ,
0112                                      G4ForceCondition*);
0113
0114   virtual G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
0115   virtual G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
0116
0117  private:
0118
0119   void CopyStep(const G4Step& step);
0120
0121   G4Step* fGhostStep = nullptr;
0122   G4StepPoint* fGhostPreStepPoint = nullptr;
0123   G4StepPoint* fGhostPostStepPoint = nullptr;
0124
0125   G4ParticleChange* fParticleChange = nullptr;
0126   const G4VImportanceAlgorithm &fImportanceAlgorithm;
0127   const G4VIStore& fIStore;
0128   G4SamplingPostStepAction* fPostStepAction = nullptr;
0129
0130   G4TransportationManager* fTransportationManager = nullptr;
0131   G4PathFinder* fPathFinder = nullptr;
0132
0133   // -------------------------------
0134   // Navigation in the Ghost World:
0135   // -------------------------------
0136   G4String             fGhostWorldName = "NoParallelWorld";
0137   G4VPhysicalVolume*   fGhostWorld = nullptr;
0138   G4Navigator*         fGhostNavigator = nullptr;
0139   G4int                fNavigatorID = -1;
0140   G4TouchableHandle    fOldGhostTouchable;
0141   G4TouchableHandle    fNewGhostTouchable;
0142   G4FieldTrack         fFieldTrack = '0';
0143   G4double             fGhostSafety = -1;
0144   G4bool               fOnBoundary = false;
0145
0146   G4bool               fParaflag = false;
0147   G4FieldTrack         fEndTrack = '0';
0148   ELimited             feLimited = kDoNot;
0149 };
0150
0151 #endif