include/Geant4/G4WeightWindowProcess.hh

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0025 //
0026 // G4WeightWindowProcess
0027 //
0028 // Class description:
0029 //
0030 // Used internally by weight window technique in the "mass" geometry.
0031 // This process is a forced post step process. It will apply
0032 // weight window biasing on boundaries, collisions
0033 // or both according to the G4PlaceOfAction argument.
0034 //
0035 // Author: Michael Dressel, 2002
0036 // --------------------------------------------------------------------
0037 #ifndef G4WeightWindowProcess_hh
0038 #define G4WeightWindowProcess_hh 1
0039
0040 #include "G4VProcess.hh"
0041 #include "G4VTrackTerminator.hh"
0042 #include "G4PlaceOfAction.hh"
0043 #include "G4VTouchable.hh"
0044
0045 class G4SamplingPostStepAction;
0046 class G4VWeightWindowAlgorithm;
0047 class G4VWeightWindowStore;
0048
0049 class G4Step;
0050 class G4Navigator;
0051 class G4TransportationManager;
0052 class G4PathFinder;
0053
0054 #include "G4FieldTrack.hh"
0055 #include "G4TouchableHandle.hh"
0056 #include "G4MultiNavigator.hh"   // For ELimited enum
0057
0058 class G4WeightWindowProcess : public G4VProcess, public G4VTrackTerminator
0059 {
0060
0061  public:
0062
0063   G4WeightWindowProcess(const G4VWeightWindowAlgorithm&
0064                               aWeightWindowAlgorithm,
0065                         const G4VWeightWindowStore &aWWStore,
0066                         const G4VTrackTerminator* TrackTerminator,
0067                               G4PlaceOfAction placeOfAction,
0068                         const G4String& aName = "WeightWindowProcess",
0069                               G4bool para = false);
0070     // creates a G4ParticleChange
0071
0072   virtual ~G4WeightWindowProcess();
0073     // delete the G4ParticleChange
0074
0075   G4WeightWindowProcess(const G4WeightWindowProcess &) = delete;
0076   G4WeightWindowProcess &operator=(const G4WeightWindowProcess &) = delete;
0077
0078   //--------------------------------------------------------------
0079   // Set Parallel World
0080   //--------------------------------------------------------------
0081
0082   void SetParallelWorld(const G4String& parallelWorldName);
0083   void SetParallelWorld(G4VPhysicalVolume* parallelWorld);
0084
0085   //--------------------------------------------------------------
0086   //     Process interface
0087   //--------------------------------------------------------------
0088
0089   void StartTracking(G4Track*);
0090
0091   virtual G4double
0092   PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
0093                                        G4double previousStepSize,
0094                                        G4ForceCondition* condition);
0095     // make process beeing forced
0096   virtual G4VParticleChange *PostStepDoIt(const G4Track&, const G4Step&);
0097     // aply weight window sampling
0098
0099   virtual void KillTrack() const;
0100     // used in case no scoring process follows that does the killing
0101
0102   virtual const G4String& GetName() const;
0103
0104   //  no operation in  AtRestDoIt and  AlongStepDoIt
0105
0106   virtual G4double
0107   AlongStepGetPhysicalInteractionLength(const G4Track&, G4double, G4double,
0108                                         G4double&, G4GPILSelection*);
0109   virtual G4double
0110   AtRestGetPhysicalInteractionLength(const G4Track&, G4ForceCondition*);
0111
0112   virtual G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
0113   virtual G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
0114
0115  private:
0116
0117   void CopyStep(const G4Step& step);
0118
0119   G4Step* fGhostStep = nullptr;
0120   G4StepPoint* fGhostPreStepPoint = nullptr;
0121   G4StepPoint* fGhostPostStepPoint = nullptr;
0122
0123   G4ParticleChange* fParticleChange = nullptr;
0124   const G4VWeightWindowAlgorithm& fWeightWindowAlgorithm;
0125   const G4VWeightWindowStore& fWeightWindowStore;
0126   G4SamplingPostStepAction* fPostStepAction = nullptr;
0127   G4PlaceOfAction fPlaceOfAction;
0128
0129   G4TransportationManager* fTransportationManager = nullptr;
0130   G4PathFinder* fPathFinder = nullptr;
0131
0132   // -------------------------------
0133   // Navigation in the Ghost World:
0134   // -------------------------------
0135   G4String             fGhostWorldName = "NoParallelWorld";
0136   G4VPhysicalVolume*   fGhostWorld = nullptr;
0137   G4Navigator*         fGhostNavigator = nullptr;
0138   G4int                fNavigatorID = -1;
0139   G4TouchableHandle    fOldGhostTouchable;
0140   G4TouchableHandle    fNewGhostTouchable;
0141   G4FieldTrack         fFieldTrack = '0';
0142   G4double             fGhostSafety = -1;
0143   G4bool               fOnBoundary = false;
0144
0145   G4bool               fParaflag = false;
0146   G4FieldTrack         fEndTrack = '0';
0147   ELimited             feLimited = kDoNot;
0148 };
0149
0150 #endif