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geant4/source/processes/biasing/generic/src/G4BiasingHelper.cc
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2022-12-09 14:43:28 +01:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
#include "G4BiasingHelper.hh"
#include "G4ProcessManager.hh"
#include "G4BiasingProcessInterface.hh"
#include "G4ParallelGeometriesLimiterProcess.hh"
G4bool G4BiasingHelper::ActivatePhysicsBiasing(G4ProcessManager* pmanager,
G4String physicsProcessToBias,
G4String wrappedName)
{
G4VProcess* physicsProcess(0);
G4ProcessVector* vprocess = pmanager->GetProcessList();
for (G4int ip = 0 ; ip < (G4int)vprocess->size() ; ++ip)
{
if ( (*vprocess)[ip]->GetProcessName() == physicsProcessToBias )
{
physicsProcess = (*vprocess)[ip];
break;
}
}
// -- process not found, return "false" to tell about failure
if ( physicsProcess == 0 ) return false;
// -- process is not a physics one, return "false" to tell about failure
G4int processType = physicsProcess->GetProcessType();
if ( ( processType != 2 ) && // EM
( processType != 3 ) && // Optical
( processType != 4 ) && // Hadronic
( processType != 6 ) ) // Decay
return false;
// -- prevent wrapper of wrapper...
if ( dynamic_cast< G4BiasingProcessInterface* >( physicsProcess ) ) return false;
// -- remember process indeces:
G4int atRestIndex = pmanager->GetProcessOrdering(physicsProcess, idxAtRest );
G4int alongStepIndex = pmanager->GetProcessOrdering(physicsProcess, idxAlongStep);
G4int postStepIndex = pmanager->GetProcessOrdering(physicsProcess, idxPostStep );
// -- now remove the physic process, that will be replaced by a wrapped version:
G4VProcess* removed = pmanager->RemoveProcess(physicsProcess);
if ( removed != physicsProcess )
{
G4ExceptionDescription ed;
ed << "Internal inconsistency in processes handling. Please report !" << G4endl;
G4Exception("G4BiasingHelper::ActivatePhysicsBiasing(...)",
"BIAS.GEN.01",
FatalException,
ed);
}
G4BiasingProcessInterface* biasingWrapper = new G4BiasingProcessInterface( physicsProcess,
atRestIndex != ordInActive,
alongStepIndex != ordInActive,
postStepIndex != ordInActive,
wrappedName);
if ( alongStepIndex == -1 ) alongStepIndex = ordDefault;
pmanager->AddProcess( biasingWrapper,
atRestIndex,
alongStepIndex,
postStepIndex);
return true;
}
void G4BiasingHelper::ActivateNonPhysicsBiasing(G4ProcessManager* pmanager,
G4String nonPhysicsProcessName )
{
G4BiasingProcessInterface* biasingNonPhys(nullptr);
if ( nonPhysicsProcessName == "" ) biasingNonPhys = new G4BiasingProcessInterface();
else biasingNonPhys = new G4BiasingProcessInterface(nonPhysicsProcessName );
pmanager->AddProcess( biasingNonPhys,
ordInActive,
ordInActive,
ordDefault);
}
G4ParallelGeometriesLimiterProcess* G4BiasingHelper::AddLimiterProcess(G4ProcessManager* pmanager, const G4String& processName)
{
G4ParallelGeometriesLimiterProcess* toReturn = nullptr;
G4ProcessVector* processList = pmanager->GetProcessList();
G4bool noInstance = true;
for (G4int i = 0 ; i < (G4int)processList->size() ; ++i)
{
G4VProcess* process = (*processList)[i];
if ( dynamic_cast< G4ParallelGeometriesLimiterProcess* >( process ) )
{
noInstance = false;
G4ExceptionDescription ed;
ed << "Trying to re-add a G4ParallelGeometriesLimiterProcess process to the process manager for '"<<
pmanager->GetParticleType()->GetParticleName() << " (PDG : " << pmanager->GetParticleType()->GetPDGEncoding() << " )"
<< " while one is already present." << G4endl;
G4Exception("G4BiasingHelper::AddBiasingProcessLimiter(G4ProcessManager* pmanager)",
"BIAS.GEN.28",
JustWarning, ed,
"Call ignored.");
break;
}
}
if ( noInstance )
{
G4ParallelGeometriesLimiterProcess* biasingLimiter = new G4ParallelGeometriesLimiterProcess(processName);
pmanager->AddProcess ( biasingLimiter );
pmanager->SetProcessOrderingToSecond( biasingLimiter, idxAlongStep );
pmanager->SetProcessOrderingToLast ( biasingLimiter, idxPostStep );
toReturn = biasingLimiter;
}
return toReturn;
}