Gabriele Cosmo
84 lines
3.6 KiB
C++
84 lines
3.6 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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#include "G4ParticleChangeForOccurenceBiasing.hh"
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G4ParticleChangeForOccurenceBiasing::G4ParticleChangeForOccurenceBiasing(G4String name)
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: G4VParticleChange(),
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fName(name),
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fWrappedParticleChange(0),
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fOccurenceWeightForNonInteraction(-1.0),
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fOccurenceWeightForInteraction(-1.0)
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{}
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G4ParticleChangeForOccurenceBiasing::~G4ParticleChangeForOccurenceBiasing()
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{}
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void G4ParticleChangeForOccurenceBiasing::SetWrappedParticleChange(G4VParticleChange* wpc)
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{
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fWrappedParticleChange = wpc;
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}
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void G4ParticleChangeForOccurenceBiasing::StealSecondaries()
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{
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SetNumberOfSecondaries( fWrappedParticleChange->GetNumberOfSecondaries() );
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for (G4int isecond = 0; isecond < fWrappedParticleChange->GetNumberOfSecondaries(); isecond++)
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{
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G4Track* secondary = fWrappedParticleChange->GetSecondary(isecond);
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secondary->SetWeight ( secondary->GetWeight() * fOccurenceWeightForInteraction );
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AddSecondary( secondary );
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}
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fWrappedParticleChange->Clear();
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}
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G4Step* G4ParticleChangeForOccurenceBiasing::UpdateStepForAtRest(G4Step* step)
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{
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return step;
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}
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G4Step* G4ParticleChangeForOccurenceBiasing::UpdateStepForAlongStep(G4Step* step)
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{
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// -- make particle change of wrapped process to apply its changes:
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if ( fWrappedParticleChange ) fWrappedParticleChange->UpdateStepForAlongStep( step );
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// -- multiply parent weight by weight due to occurrence biasing:
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G4StepPoint* postStepPoint = step->GetPostStepPoint();
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postStepPoint->SetWeight( postStepPoint->GetWeight() * fOccurenceWeightForNonInteraction );
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return step;
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}
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G4Step* G4ParticleChangeForOccurenceBiasing::UpdateStepForPostStep(G4Step* step)
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{
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// -- let make first wrapped process to apply its changes:
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fWrappedParticleChange->UpdateStepForPostStep(step);
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// -- then apply weight correction due to occurrence biasing:
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G4StepPoint* postStepPoint = step->GetPostStepPoint();
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postStepPoint->SetWeight( postStepPoint->GetWeight() * fOccurenceWeightForInteraction );
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return step;
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}
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