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G4ParticleChangeForTransport.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4ParticleChangeForTransport.cc
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//
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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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//
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//
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//
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// --------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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//
33
//
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// ------------------------------------------------------------
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// Implemented for the new scheme 10 May. 1998 H.Kurahige
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// Correct tratment of fpNextTouchable 12 May. 1998 H.Kurashige
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// Change to the next volume only if energy>0 19 Jan. 2004 V.Ivanchenko
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// --------------------------------------------------------------
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#include "
G4ParticleChangeForTransport.hh
"
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#include "
G4TouchableHandle.hh
"
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#include "
G4Track.hh
"
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#include "
G4Step.hh
"
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#include "
G4TrackFastVector.hh
"
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#include "
G4DynamicParticle.hh
"
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G4ParticleChangeForTransport::G4ParticleChangeForTransport
()
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:
G4ParticleChange
(), isMomentumChanged(
false
), theMaterialChange(0),
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theMaterialCutsCoupleChange(0), theSensitiveDetectorChange(0),
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fpVectorOfAuxiliaryPointsPointer(0)
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{
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if
(
verboseLevel
>2) {
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G4cout
<<
"G4ParticleChangeForTransport::G4ParticleChangeForTransport() "
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<<
G4endl
;
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}
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}
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G4ParticleChangeForTransport::~G4ParticleChangeForTransport
()
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{
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if
(
verboseLevel
>2) {
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G4cout
<<
"G4ParticleChangeForTransport::~G4ParticleChangeForTransport() "
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<<
G4endl
;
63
}
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}
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G4ParticleChangeForTransport::
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G4ParticleChangeForTransport
(
const
G4ParticleChangeForTransport
&
r
)
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:
G4ParticleChange
(r),
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fpVectorOfAuxiliaryPointsPointer(0)
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{
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if
(
verboseLevel
>0) {
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G4cout
<<
"G4ParticleChangeForTransport:: copy constructor is called "
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<<
G4endl
;
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}
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theTouchableHandle
= r.
theTouchableHandle
;
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isMomentumChanged
= r.
isMomentumChanged
;
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theMaterialChange
= r.
theMaterialChange
;
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theMaterialCutsCoupleChange
= r.
theMaterialCutsCoupleChange
;
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theSensitiveDetectorChange
= r.
theSensitiveDetectorChange
;
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}
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// assignemnt operator
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G4ParticleChangeForTransport
&
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G4ParticleChangeForTransport::operator=
(
const
G4ParticleChangeForTransport
&
r
)
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{
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if
(
verboseLevel
>1) {
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G4cout
<<
"G4ParticleChangeForTransport:: assignment operator is called "
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<<
G4endl
;
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}
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if
(
this
!= &r)
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{
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theListOfSecondaries
= r.
theListOfSecondaries
;
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theSizeOftheListOfSecondaries
= r.
theSizeOftheListOfSecondaries
;
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theNumberOfSecondaries
= r.
theNumberOfSecondaries
;
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theStatusChange
= r.
theStatusChange
;
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theTouchableHandle
= r.
theTouchableHandle
;
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theMaterialChange
= r.
theMaterialChange
;
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theMaterialCutsCoupleChange
= r.
theMaterialCutsCoupleChange
;
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theSensitiveDetectorChange
= r.
theSensitiveDetectorChange
;
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theMomentumDirectionChange
= r.
theMomentumDirectionChange
;
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thePolarizationChange
= r.
thePolarizationChange
;
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thePositionChange
= r.
thePositionChange
;
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theTimeChange
= r.
theTimeChange
;
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theEnergyChange
= r.
theEnergyChange
;
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theVelocityChange
= r.
theVelocityChange
;
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theTrueStepLength
= r.
theTrueStepLength
;
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theLocalEnergyDeposit
= r.
theLocalEnergyDeposit
;
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theSteppingControlFlag
= r.
theSteppingControlFlag
;
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}
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return
*
this
;
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}
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//----------------------------------------------------------------
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// methods for updating G4Step
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//
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G4Step
*
G4ParticleChangeForTransport::UpdateStepForAtRest
(
G4Step
* pStep)
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{
119
// Nothing happens for AtRestDoIt
120
if
(
verboseLevel
>0) {
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G4cout
<<
"G4ParticleChangeForTransport::UpdateStepForAtRest() is called"
122
<<
G4endl
;
123
G4cout
<<
" Nothing happens for this method "
<<
G4endl
;
124
}
125
// Update the G4Step specific attributes
126
return
UpdateStepInfo
(pStep);
127
}
128
129
130
G4Step
*
G4ParticleChangeForTransport::UpdateStepForAlongStep
(
G4Step
* pStep)
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{
132
// Smooth curved tajectory representation: let the Step know about
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// the auxiliary trajectory points (jacek 30/10/2002)
134
pStep->
SetPointerToVectorOfAuxiliaryPoints
(
fpVectorOfAuxiliaryPointsPointer
);
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// copy of G4ParticleChange::UpdateStepForAlongStep
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// i.e. no effect for touchable
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// A physics process always calculates the final state of the
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// particle relative to the initial state at the beginning
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// of the Step, i.e., based on information of G4Track (or
142
// equivalently the PreStepPoint).
143
// So, the differences (delta) between these two states have to be
144
// calculated and be accumulated in PostStepPoint.
145
146
// Take note that the return type of GetMomentumChange is a
147
// pointer to G4ThreeVector. Also it is a normalized
148
// momentum vector.
149
150
G4StepPoint
* pPreStepPoint = pStep->
GetPreStepPoint
();
151
G4StepPoint
* pPostStepPoint = pStep->
GetPostStepPoint
();
152
G4Track
* aTrack = pStep->
GetTrack
();
153
G4double
mass
= aTrack->
GetDynamicParticle
()->
GetMass
();
154
155
// uodate kinetic energy
156
// now assume that no energy change in transportation
157
// However it is not true in electric fields
158
// Case for changing energy will be implemented in future
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160
161
// update momentum direction and energy
162
if
(
isMomentumChanged
) {
163
G4double
energy
;
164
energy= pPostStepPoint->
GetKineticEnergy
()
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+ (
theEnergyChange
- pPreStepPoint->
GetKineticEnergy
());
166
167
// calculate new momentum
168
G4ThreeVector
pMomentum = pPostStepPoint->
GetMomentum
()
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+ (
CalcMomentum
(
theEnergyChange
,
theMomentumDirectionChange
, mass)
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- pPreStepPoint->
GetMomentum
());
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G4double
tMomentum = pMomentum.
mag
();
172
G4ThreeVector
direction(1.0,0.0,0.0);
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if
( tMomentum > 0. ){
174
G4double
inv_Momentum= 1.0 / tMomentum;
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direction= pMomentum * inv_Momentum;
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}
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pPostStepPoint->
SetMomentumDirection
(direction);
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pPostStepPoint->
SetKineticEnergy
( energy );
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}
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if
(
isVelocityChanged
) pPostStepPoint->
SetVelocity
(
theVelocityChange
);
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// stop case should not occur
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//pPostStepPoint->SetMomentumDirection(G4ThreeVector(1., 0., 0.));
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// update polarization
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pPostStepPoint->
AddPolarization
(
thePolarizationChange
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- pPreStepPoint->
GetPolarization
());
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// update position and time
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pPostStepPoint->
AddPosition
(
thePositionChange
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- pPreStepPoint->
GetPosition
() );
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pPostStepPoint->
AddGlobalTime
(
theTimeChange
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- pPreStepPoint->
GetLocalTime
());
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pPostStepPoint->
AddLocalTime
(
theTimeChange
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- pPreStepPoint->
GetLocalTime
());
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pPostStepPoint->
AddProperTime
(
theProperTimeChange
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- pPreStepPoint->
GetProperTime
());
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#ifdef G4VERBOSE
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if
(
debugFlag
)
CheckIt
(*aTrack);
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#endif
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// Update the G4Step specific attributes
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//pStep->SetStepLength( theTrueStepLength );
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// pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
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pStep->
SetControlFlag
(
theSteppingControlFlag
);
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return
pStep;
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// return UpdateStepInfo(pStep);
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}
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G4Step
*
G4ParticleChangeForTransport::UpdateStepForPostStep
(
G4Step
* pStep)
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{
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// A physics process always calculates the final state of the particle
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// Change volume only if some kinetic energy remains
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G4StepPoint
* pPostStepPoint = pStep->
GetPostStepPoint
();
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if
(pPostStepPoint->
GetKineticEnergy
() > 0.0) {
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// update next touchable
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// (touchable can be changed only at PostStepDoIt)
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pPostStepPoint->
SetTouchableHandle
(
theTouchableHandle
);
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pPostStepPoint->
SetMaterial
(
theMaterialChange
);
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pPostStepPoint->
SetMaterialCutsCouple
(
theMaterialCutsCoupleChange
);
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pPostStepPoint->
SetSensitiveDetector
(
theSensitiveDetectorChange
);
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}
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if
( this->
GetFirstStepInVolume
() ){
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pStep->
SetFirstStepFlag
();
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}
else
{
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pStep->
ClearFirstStepFlag
();
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}
233
if
( this->
GetLastStepInVolume
() ){
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pStep->
SetLastStepFlag
();
235
}
else
{
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pStep->
ClearLastStepFlag
();
237
}
238
// It used to call base class's method
239
// - but this would copy uninitialised data members
240
// return G4ParticleChange::UpdateStepForPostStep(pStep);
241
242
// Copying what the base class does would instead
243
// - also not useful
244
// return G4VParticleChange::UpdateStepInfo(pStep);
245
246
return
pStep;
247
}
248
249
250
//----------------------------------------------------------------
251
// methods for printing messages
252
//
253
254
void
G4ParticleChangeForTransport::DumpInfo
()
const
255
{
256
// use base-class DumpInfo
257
G4ParticleChange::DumpInfo
();
258
259
G4int
oldprc =
G4cout
.precision(3);
260
G4cout
<<
" Touchable (pointer) : "
261
<< std::setw(20) <<
theTouchableHandle
() <<
G4endl
;
262
G4cout
.precision(oldprc);
263
}
264
geant4
tree
geant4-10.6-release
source
track
src
G4ParticleChangeForTransport.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:53
using
1.8.2 with
ECCE GitHub integration