1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4ParticleChangeForTransport.cc,v 1.19 2006/11/03 17:45:04 japost Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------- |
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32 | // GEANT 4 class implementation file |
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33 | // |
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34 | // |
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35 | // |
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36 | // ------------------------------------------------------------ |
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37 | // Implemented for the new scheme 10 May. 1998 H.Kurahige |
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38 | // Correct tratment of fpNextTouchable 12 May. 1998 H.Kurashige |
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39 | // Change to the next volume only if energy>0 19 Jan. 2004 V.Ivanchenko |
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40 | // -------------------------------------------------------------- |
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41 | |
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42 | #include "G4ParticleChangeForTransport.hh" |
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43 | #include "G4TouchableHandle.hh" |
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44 | #include "G4Track.hh" |
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45 | #include "G4Step.hh" |
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46 | #include "G4TrackFastVector.hh" |
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47 | #include "G4DynamicParticle.hh" |
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48 | |
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49 | G4ParticleChangeForTransport::G4ParticleChangeForTransport():G4ParticleChange() |
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50 | { |
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51 | if (verboseLevel>2) { |
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52 | G4cout << "G4ParticleChangeForTransport::G4ParticleChangeForTransport() " << G4endl; |
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53 | } |
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54 | } |
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55 | |
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56 | G4ParticleChangeForTransport::~G4ParticleChangeForTransport() |
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57 | { |
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58 | if (verboseLevel>2) { |
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59 | G4cout << "G4ParticleChangeForTransport::~G4ParticleChangeForTransport() " << G4endl; |
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60 | } |
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61 | } |
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62 | |
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63 | |
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64 | G4ParticleChangeForTransport::G4ParticleChangeForTransport(const G4ParticleChangeForTransport &right):G4ParticleChange(right) |
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65 | { |
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66 | if (verboseLevel>0) { |
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67 | G4cout << "G4ParticleChangeForTransport:: copy constructor is called " << G4endl; |
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68 | } |
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69 | theTouchableHandle = right.theTouchableHandle; |
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70 | } |
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71 | |
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72 | // assignemnt operator |
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73 | G4ParticleChangeForTransport & G4ParticleChangeForTransport::operator=(const G4ParticleChangeForTransport &right) |
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74 | { |
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75 | if (verboseLevel>1) { |
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76 | G4cout << "G4ParticleChangeForTransport:: assignment operator is called " << G4endl; |
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77 | } |
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78 | if (this != &right) |
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79 | { |
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80 | theListOfSecondaries = right.theListOfSecondaries; |
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81 | theSizeOftheListOfSecondaries = right.theSizeOftheListOfSecondaries; |
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82 | theNumberOfSecondaries = right.theNumberOfSecondaries; |
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83 | theStatusChange = right.theStatusChange; |
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84 | theTouchableHandle = right.theTouchableHandle; |
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85 | theMaterialChange = right.theMaterialChange; |
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86 | theMaterialCutsCoupleChange = right.theMaterialCutsCoupleChange; |
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87 | theSensitiveDetectorChange = right.theSensitiveDetectorChange; |
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88 | theMomentumDirectionChange = right.theMomentumDirectionChange; |
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89 | thePolarizationChange = right.thePolarizationChange; |
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90 | thePositionChange = right.thePositionChange; |
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91 | theTimeChange = right.theTimeChange; |
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92 | theEnergyChange = right.theEnergyChange; |
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93 | theTrueStepLength = right.theTrueStepLength; |
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94 | theLocalEnergyDeposit = right.theLocalEnergyDeposit; |
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95 | theSteppingControlFlag = right.theSteppingControlFlag; |
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96 | } |
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97 | return *this; |
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98 | } |
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99 | |
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100 | //---------------------------------------------------------------- |
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101 | // methods for updating G4Step |
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102 | // |
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103 | |
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104 | G4Step* G4ParticleChangeForTransport::UpdateStepForAtRest(G4Step* pStep) |
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105 | { |
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106 | // Nothing happens for AtRestDoIt |
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107 | if (verboseLevel>0) { |
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108 | G4cout << "G4ParticleChangeForTransport::UpdateStepForAtRest() is called" << G4endl; |
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109 | G4cout << " Nothing happens for this method " << G4endl; |
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110 | } |
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111 | // Update the G4Step specific attributes |
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112 | return UpdateStepInfo(pStep); |
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113 | } |
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114 | |
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115 | |
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116 | G4Step* G4ParticleChangeForTransport::UpdateStepForAlongStep(G4Step* pStep) |
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117 | { |
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118 | // Smooth curved tajectory representation: let the Step know about |
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119 | // the auxiliary trajectory points (jacek 30/10/2002) |
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120 | pStep->SetPointerToVectorOfAuxiliaryPoints(fpVectorOfAuxiliaryPointsPointer); |
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121 | |
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122 | // copy of G4ParticleChange::UpdateStepForAlongStep |
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123 | // i.e. no effect for touchable |
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124 | |
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125 | // A physics process always calculates the final state of the |
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126 | // particle relative to the initial state at the beginning |
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127 | // of the Step, i.e., based on information of G4Track (or |
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128 | // equivalently the PreStepPoint). |
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129 | // So, the differences (delta) between these two states have to be |
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130 | // calculated and be accumulated in PostStepPoint. |
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131 | |
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132 | // Take note that the return type of GetMomentumChange is a |
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133 | // pointer to G4ThreeVector. Also it is a normalized |
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134 | // momentum vector. |
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135 | |
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136 | G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint(); |
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137 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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138 | G4Track* aTrack = pStep->GetTrack(); |
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139 | G4double mass = aTrack->GetDynamicParticle()->GetMass(); |
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140 | |
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141 | // uodate kinetic energy |
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142 | // now assume that no energy change in transportation |
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143 | // However it is not true in electric fields |
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144 | // Case for changing energy will be implemented in future |
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145 | |
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146 | |
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147 | // update momentum direction and energy |
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148 | if (isMomentumChanged) { |
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149 | G4double energy; |
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150 | energy= pPostStepPoint->GetKineticEnergy() |
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151 | + (theEnergyChange - pPreStepPoint->GetKineticEnergy()); |
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152 | |
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153 | // calculate new momentum |
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154 | G4ThreeVector pMomentum = pPostStepPoint->GetMomentum() |
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155 | + ( CalcMomentum(theEnergyChange, theMomentumDirectionChange, mass) |
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156 | - pPreStepPoint->GetMomentum()); |
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157 | G4double tMomentum = pMomentum.mag(); |
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158 | G4ThreeVector direction(1.0,0.0,0.0); |
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159 | if( tMomentum > 0. ){ |
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160 | G4double inv_Momentum= 1.0 / tMomentum; |
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161 | direction= pMomentum * inv_Momentum; |
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162 | } |
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163 | pPostStepPoint->SetMomentumDirection(direction); |
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164 | pPostStepPoint->SetKineticEnergy( energy ); |
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165 | } |
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166 | |
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167 | // stop case should not occur |
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168 | //pPostStepPoint->SetMomentumDirection(G4ThreeVector(1., 0., 0.)); |
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169 | |
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170 | |
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171 | // update polarization |
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172 | pPostStepPoint->AddPolarization( thePolarizationChange |
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173 | - pPreStepPoint->GetPolarization()); |
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174 | |
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175 | // update position and time |
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176 | pPostStepPoint->AddPosition( thePositionChange |
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177 | - pPreStepPoint->GetPosition() ); |
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178 | pPostStepPoint->AddGlobalTime( theTimeChange |
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179 | - pPreStepPoint->GetGlobalTime()); |
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180 | pPostStepPoint->AddLocalTime( theTimeChange |
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181 | - pPreStepPoint->GetGlobalTime()); |
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182 | pPostStepPoint->AddProperTime( theProperTimeChange |
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183 | - pPreStepPoint->GetProperTime()); |
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184 | |
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185 | #ifdef G4VERBOSE |
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186 | if (debugFlag) CheckIt(*aTrack); |
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187 | #endif |
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188 | |
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189 | // Update the G4Step specific attributes |
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190 | //pStep->SetStepLength( theTrueStepLength ); |
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191 | // pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit ); |
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192 | pStep->SetControlFlag( theSteppingControlFlag ); |
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193 | return pStep; |
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194 | // return UpdateStepInfo(pStep); |
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195 | } |
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196 | |
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197 | G4Step* G4ParticleChangeForTransport::UpdateStepForPostStep(G4Step* pStep) |
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198 | { |
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199 | // A physics process always calculates the final state of the particle |
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200 | |
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201 | // Change volume only if some kinetic energy remains |
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202 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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203 | if(pPostStepPoint->GetKineticEnergy() > 0.0) { |
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204 | |
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205 | // update next touchable |
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206 | // (touchable can be changed only at PostStepDoIt) |
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207 | pPostStepPoint->SetTouchableHandle( theTouchableHandle ); |
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208 | |
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209 | pPostStepPoint->SetMaterial( theMaterialChange ); |
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210 | pPostStepPoint->SetMaterialCutsCouple( theMaterialCutsCoupleChange ); |
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211 | pPostStepPoint->SetSensitiveDetector( theSensitiveDetectorChange ); |
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212 | } |
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213 | if( this->GetLastStepInVolume() ){ |
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214 | pStep->SetLastStepFlag(); |
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215 | }else{ |
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216 | pStep->ClearLastStepFlag(); |
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217 | } |
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218 | // It used to call base class's method |
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219 | // - but this would copy uninitialised data members |
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220 | // return G4ParticleChange::UpdateStepForPostStep(pStep); |
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221 | |
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222 | // Copying what the base class does would instead |
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223 | // - also not useful |
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224 | // return G4VParticleChange::UpdateStepInfo(pStep); |
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225 | |
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226 | return pStep; |
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227 | } |
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228 | |
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229 | //---------------------------------------------------------------- |
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230 | // methods for printing messages |
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231 | // |
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232 | |
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233 | void G4ParticleChangeForTransport::DumpInfo() const |
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234 | { |
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235 | // use base-class DumpInfo |
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236 | G4ParticleChange::DumpInfo(); |
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237 | |
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238 | G4cout.precision(3); |
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239 | G4cout << " Touchable (pointer) : " |
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240 | << std::setw(20) << theTouchableHandle() |
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241 | << G4endl; |
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242 | } |
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243 | |
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244 | |
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245 | |
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246 | |
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247 | |
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248 | |
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249 | |
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250 | |
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