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geant4/source/processes/biasing/generic/include/G4ParticleChangeForOccurenceBiasing.hh
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2024-12-06 11:11:40 +01:00

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//
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//
// G4ParticleChangeForOccurenceBiasing
//
// Class Description:
//
// A G4VParticleChange dedicated to occurrence biasing : it
// applies weights for non-interaction over a step, and for
// interaction at the end of the step (if interaction occurs) on
// top of a given particle change, that is the one produced by a
// physics process (biased in its final state or not).
//
// Author: Marc Verderi, November 2013.
//
// --------------------------------------------------------------------
#ifndef G4ParticleChangeForOccurenceBiasing_hh
#define G4ParticleChangeForOccurenceBiasing_hh 1
#include "G4VParticleChange.hh"
class G4ParticleChangeForOccurenceBiasing : public G4VParticleChange
{
public:
G4ParticleChangeForOccurenceBiasing(const G4String& name);
~G4ParticleChangeForOccurenceBiasing() = default;
void SetOccurenceWeightForNonInteraction(G4double w)
{ fOccurenceWeightForNonInteraction = w; }
G4double GetOccurenceWeightForNonInteraction() const
{ return fOccurenceWeightForNonInteraction; }
void SetOccurenceWeightForInteraction(G4double w)
{ fOccurenceWeightForInteraction = w; }
G4double GetOccurenceWeightForInteraction() const
{ return fOccurenceWeightForInteraction; }
// -- set a wrapped particle change AND USE IT TO UPDATE this occurrence
// particle change state:
void SetWrappedParticleChange(G4VParticleChange* wpc);
G4VParticleChange* GetWrappedParticleChange() const
{ return fWrappedParticleChange; }
// -- collect the secondaries from the wrapped particle change,
// apply weight correction, and clear wrapped particle change:
void StealSecondaries();
// -- from base class G4VParticleChange:
virtual G4Step* UpdateStepForAtRest (G4Step* step);
virtual G4Step* UpdateStepForAlongStep(G4Step* step);
virtual G4Step* UpdateStepForPostStep (G4Step* step);
const G4String& GetName() const { return fName; }
private:
G4String fName;
G4VParticleChange* fWrappedParticleChange = nullptr;
G4double fOccurenceWeightForNonInteraction = -1.0;
G4double fOccurenceWeightForInteraction = -1.0;
};
#endif