133 lines
5.1 KiB
C++
133 lines
5.1 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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// This example is provided by the Geant4-DNA collaboration
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// Any report or published results obtained using the Geant4-DNA software
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// shall cite the following Geant4-DNA collaboration publication:
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// Med. Phys. 37 (2010) 4692-4708
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// The Geant4-DNA web site is available at http://geant4-dna.org
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//
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/// \file SplitProcess.cc
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/// \brief Implementation of the variance reduction particle split class
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "SplitProcess.hh"
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#include "UserTrackInformation.hh"
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#include "G4Track.hh"
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#include "G4VParticleChange.hh"
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#include "G4LogicalVolume.hh"
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#include "G4TouchableHandle.hh"
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#include "G4Region.hh"
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#include "G4RegionStore.hh"
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#include <vector>
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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SplitProcess::SplitProcess(G4String regName, G4int nsplit)
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:fRegionName(regName), fNSplit(nsplit)
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{
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fRegion = G4RegionStore::GetInstance()->FindOrCreateRegion(fRegionName);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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SplitProcess::~SplitProcess() {
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VParticleChange* SplitProcess::PostStepDoIt(const G4Track& track, const G4Step& step) {
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G4VParticleChange* particleChange(0);
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if ( step.GetPreStepPoint()->GetTouchableHandle()->GetVolume()->GetLogicalVolume()
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->GetRegion() != fRegion ) {
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particleChange = pRegProcess->PostStepDoIt(track, step);
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assert ( 0 != particleChange);
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return particleChange;
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}
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if ( fNSplit == 1 ) {
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particleChange = pRegProcess->PostStepDoIt(track, step);
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assert ( 0 != particleChange);
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return particleChange;
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}
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UserTrackInformation* parentInformation =
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(UserTrackInformation*)(step.GetTrack()->GetUserInformation());
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G4int initialSplitTrackID = parentInformation->GetSplitTrackID();
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if ( initialSplitTrackID > 1 ) {
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particleChange = pRegProcess->PostStepDoIt(track, step);
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assert ( 0 != particleChange);
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return particleChange;
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}
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G4double weight = track.GetWeight()/fNSplit;
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G4int splitTrackID = 3;
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std::vector<G4Track*> secondaries;
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std::vector<G4int> vSplitTrack;
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for ( int i = 0; i < fNSplit; i++ ) {
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particleChange = pRegProcess->PostStepDoIt(track, step);
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assert( 0 != particleChange);
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particleChange->SetVerboseLevel(0);
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G4Track* newTrack = new G4Track(*(particleChange->GetSecondary(0)));
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secondaries.push_back( newTrack );
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vSplitTrack.push_back( splitTrackID );
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splitTrackID++;
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}
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parentInformation->SetSplitTrackID(2);
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particleChange->SetNumberOfSecondaries(secondaries.size());
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particleChange->SetSecondaryWeightByProcess(true);
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std::vector<G4Track*>::iterator iter = secondaries.begin();
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G4int i = 0;
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while( iter != secondaries.end() ) {
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G4Track* newTrack = *iter;
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newTrack->SetWeight(weight);
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UserTrackInformation* secondaryInformation = new UserTrackInformation();
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secondaryInformation->SetSplitTrackID(vSplitTrack[i]);
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newTrack->SetUserInformation(secondaryInformation);
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particleChange->AddSecondary(newTrack);
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iter++;
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i++;
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}
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return particleChange;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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