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geant4/source/processes/transportation/src/G4ParallelTransport.cc
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2016-06-08 16:57:27 +02:00

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//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * 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. *
// * *
// * This code implementation is the intellectual property of the *
// * GEANT4 collaboration. *
// * By copying, distributing or modifying the Program (or any work *
// * based on the Program) you indicate your acceptance of this *
// * statement, and all its terms. *
// ********************************************************************
//
//
// $Id: G4ParallelTransport.cc,v 1.8 2002/11/04 10:47:56 dressel Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// ----------------------------------------------------------------------
// GEANT 4 class source file
//
// G4ParallelTransport.cc
//
// ----------------------------------------------------------------------
#include "G4ParallelTransport.hh"
#include "G4VPGeoDriver.hh"
#include "G4VParallelStepper.hh"
#include "g4std/strstream"
G4ParallelTransport::G4ParallelTransport(G4VPGeoDriver &pgeodriver,
G4VParallelStepper &aStepper,
const G4String &aName)
:
G4VProcess(aName),
fParticleChange(new G4ParticleChange),
fPgeodriver(pgeodriver),
fPStepper(aStepper),
fCrossBoundary(false),
fInitStep(false)
{
if (!fParticleChange) {
G4Exception("ERROR:G4ParallelTransport::G4ParallelTransport: new failed to create G4ParticleChange!");
}
G4VProcess::pParticleChange = fParticleChange;
}
G4ParallelTransport::~G4ParallelTransport()
{
delete fParticleChange;
}
void G4ParallelTransport::StartTracking(){
fInitStep = true;
}
void G4ParallelTransport::EndTracking(){}
G4double
G4ParallelTransport::
PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
G4double previousStepSize,
G4ForceCondition* condition)
{
G4double stepLength = 0;
// if this function is called on a new track let the navigator
// know about it
// G4bool initStep = (aTrack.GetCurrentStepNumber() == 1);
if (fInitStep) {
fInitStep = false;
stepLength = fPgeodriver.
ComputeStepLengthInit(aTrack.GetPosition(),
aTrack.GetMomentumDirection());
fPStepper.Init(fPgeodriver.GetCurrentGeometryCell());
fCrossBoundary = false;
}
else if (fCrossBoundary) {
stepLength = fPgeodriver.
ComputeStepLengthCrossBoundary(aTrack.GetPosition(),
aTrack.GetMomentumDirection());
fPStepper.UnSetCrossBoundary();
fCrossBoundary = false;
}
else {
stepLength = fPgeodriver.
ComputeStepLengthInVolume(aTrack.GetPosition(),
aTrack.GetMomentumDirection());
}
*condition = NotForced;
return stepLength;
}
G4VParticleChange *
G4ParallelTransport::PostStepDoIt(const G4Track& aTrack,
const G4Step& aStep)
{
if (!(aStep.GetStepLength() > 0.)) {
char st[1000];
G4std::ostrstream os(st,1000);
os << "G4PArallelTransport::InitPostDoIt: StepLength() == 0.\n"
<< "pos: " << aTrack.GetPosition() << ", "
<< "dir: " << aTrack.GetMomentumDirection() << "\n"
<< '\0';
G4String m(st);
Warning(m);
}
fParticleChange->Initialize(aTrack);
fCrossBoundary = true;
fPgeodriver.LocateOnBoundary(aTrack.GetPosition(),
aTrack.GetMomentumDirection());
fPStepper.Update(fPgeodriver.GetCurrentGeometryCell());
return fParticleChange;
}
void G4ParallelTransport::Error(const G4String &m)
{
G4cout << "ERROR - G4ParallelTransport::" << m << G4endl;
G4Exception("Program aborted.");
}
void G4ParallelTransport::Warning(const G4String &m)
{
G4cout << "WARNING - G4ParallelTransport: " << G4endl;
G4cout << m << G4endl;
}
G4double G4ParallelTransport::
AlongStepGetPhysicalInteractionLength(const G4Track&,
G4double ,
G4double ,
G4double& ,
G4GPILSelection*) {
return -1.0;
}
G4double G4ParallelTransport::
AtRestGetPhysicalInteractionLength(const G4Track& ,
G4ForceCondition*) {
return -1.0;
}
G4VParticleChange* G4ParallelTransport::
AtRestDoIt(const G4Track&, const G4Step&) {
return 0;
}
G4VParticleChange* G4ParallelTransport::
AlongStepDoIt(const G4Track&, const G4Step&) {
return 0;
}