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: G4Track.cc,v 1.30 2007/10/02 00:46:21 kurasige Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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29 | // |
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30 | // |
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31 | //--------------------------------------------------------------- |
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32 | // |
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33 | // G4Track.cc |
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34 | // |
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35 | //--------------------------------------------------------------- |
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36 | // Add copy constructor Hisaya Feb. 07 01 |
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37 | // Fix GetVelocity Hisaya Feb. 17 01 |
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38 | // Modification for G4TouchableHandle 22 Oct. 2001 R.Chytracek// |
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39 | // Fix GetVelocity (bug report #741) Horton-Smith Apr 14 2005 |
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40 | |
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41 | #include "G4Track.hh" |
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42 | |
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43 | G4Allocator<G4Track> aTrackAllocator; |
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44 | |
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45 | /////////////////////////////////////////////////////////// |
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46 | G4Track::G4Track(G4DynamicParticle* apValueDynamicParticle, |
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47 | G4double aValueTime, |
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48 | const G4ThreeVector& aValuePosition) |
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49 | /////////////////////////////////////////////////////////// |
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50 | : fCurrentStepNumber(0), fPosition(aValuePosition), |
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51 | fGlobalTime(aValueTime), fLocalTime(0.), |
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52 | fTrackLength(0.), |
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53 | fParentID(0), fTrackID(0), |
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54 | fpDynamicParticle(apValueDynamicParticle), |
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55 | fTrackStatus(fAlive), |
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56 | fBelowThreshold(false), fGoodForTracking(false), |
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57 | fStepLength(0.0), fWeight(1.0), |
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58 | fpStep(0), |
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59 | fVtxKineticEnergy(0.0), |
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60 | fpLVAtVertex(0), fpCreatorProcess(0), |
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61 | fpUserInformation(0) |
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62 | { |
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63 | } |
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64 | |
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65 | ////////////////// |
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66 | G4Track::G4Track() |
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67 | ////////////////// |
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68 | : fCurrentStepNumber(0), |
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69 | fGlobalTime(0), fLocalTime(0.), |
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70 | fTrackLength(0.), |
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71 | fParentID(0), fTrackID(0), |
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72 | fpDynamicParticle(0), |
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73 | fTrackStatus(fAlive), |
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74 | fBelowThreshold(false), fGoodForTracking(false), |
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75 | fStepLength(0.0), fWeight(1.0), |
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76 | fpStep(0), |
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77 | fVtxKineticEnergy(0.0), |
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78 | fpLVAtVertex(0), fpCreatorProcess(0), |
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79 | fpUserInformation(0) |
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80 | { |
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81 | } |
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82 | ////////////////// |
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83 | G4Track::G4Track(const G4Track& right) |
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84 | ////////////////// |
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85 | { |
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86 | *this = right; |
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87 | } |
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88 | |
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89 | /////////////////// |
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90 | G4Track::~G4Track() |
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91 | /////////////////// |
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92 | { |
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93 | delete fpDynamicParticle; |
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94 | delete fpUserInformation; |
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95 | } |
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96 | |
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97 | ////////////////// |
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98 | G4Track & G4Track::operator=(const G4Track &right) |
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99 | ////////////////// |
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100 | { |
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101 | if (this != &right) { |
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102 | fPosition = right.fPosition; |
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103 | fGlobalTime = right.fGlobalTime; |
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104 | fLocalTime = right.fLocalTime; |
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105 | fTrackLength = right.fTrackLength; |
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106 | fWeight = right.fWeight; |
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107 | fStepLength = right.fStepLength; |
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108 | |
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109 | // Track ID (and Parent ID) is not copied and set to zero for new track |
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110 | fTrackID = 0; |
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111 | fParentID =0; |
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112 | |
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113 | // CurrentStepNumber is set to be 0 |
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114 | fCurrentStepNumber = 0; |
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115 | |
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116 | // dynamic particle information |
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117 | fpDynamicParticle = new G4DynamicParticle(*(right.fpDynamicParticle)); |
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118 | |
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119 | // track status and flags for tracking |
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120 | fTrackStatus = right.fTrackStatus; |
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121 | fBelowThreshold = right.fBelowThreshold; |
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122 | fGoodForTracking = right.fGoodForTracking; |
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123 | |
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124 | // Step information (Step Length, Step Number, pointer to the Step,) |
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125 | // are not copied |
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126 | fpStep=0; |
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127 | |
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128 | // vertex information |
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129 | fVtxPosition = right.fVtxPosition; |
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130 | fpLVAtVertex = right.fpLVAtVertex; |
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131 | fVtxKineticEnergy = right.fVtxKineticEnergy; |
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132 | fVtxMomentumDirection = right.fVtxMomentumDirection; |
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133 | |
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134 | // CreatorProcess and UserInformation are not copied |
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135 | fpCreatorProcess = 0; |
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136 | fpUserInformation = 0; |
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137 | } |
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138 | return *this; |
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139 | } |
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140 | |
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141 | /////////////////// |
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142 | void G4Track::CopyTrackInfo(const G4Track& right) |
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143 | ////////////////// |
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144 | { |
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145 | *this = right; |
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146 | } |
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147 | |
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148 | #include "G4ParticleTable.hh" |
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149 | /////////////////// |
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150 | G4double G4Track::GetVelocity() const |
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151 | /////////////////// |
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152 | { |
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153 | static G4bool isFirstTime = true; |
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154 | static G4ParticleDefinition* fOpticalPhoton =0; |
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155 | |
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156 | static G4Material* prev_mat =0; |
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157 | static G4MaterialPropertyVector* groupvel =0; |
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158 | static G4double prev_velocity =0; |
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159 | static G4double prev_momentum =0; |
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160 | |
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161 | |
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162 | if ( isFirstTime ) { |
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163 | isFirstTime = false; |
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164 | // set fOpticalPhoton |
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165 | fOpticalPhoton = G4ParticleTable::GetParticleTable()->FindParticle("opticalphoton"); |
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166 | } |
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167 | |
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168 | G4double velocity ; |
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169 | |
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170 | G4double mass = fpDynamicParticle->GetMass(); |
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171 | |
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172 | // mass less particle |
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173 | if( mass == 0. ){ |
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174 | velocity = c_light ; |
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175 | |
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176 | // special case for photons |
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177 | if ( (fOpticalPhoton !=0) && |
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178 | (fpDynamicParticle->GetDefinition()==fOpticalPhoton) ){ |
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179 | |
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180 | G4Material* mat=0; |
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181 | G4bool update_groupvel = false; |
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182 | if ( this->GetStep() ){ |
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183 | mat= this->GetMaterial(); // Fix for repeated volumes |
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184 | }else{ |
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185 | if (fpTouchable!=0){ |
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186 | mat=fpTouchable->GetVolume()->GetLogicalVolume()->GetMaterial(); |
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187 | } |
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188 | } |
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189 | // check if previous step is in the same volume |
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190 | // and get new GROUPVELOVITY table if necessary |
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191 | if ((mat != prev_mat)||(groupvel==0)) { |
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192 | groupvel = 0; |
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193 | if(mat->GetMaterialPropertiesTable() != 0) |
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194 | groupvel = mat->GetMaterialPropertiesTable()->GetProperty("GROUPVEL"); |
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195 | update_groupvel = true; |
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196 | } |
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197 | prev_mat = mat; |
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198 | |
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199 | if (groupvel != 0 ) { |
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200 | // light velocity = c/(rindex+d(rindex)/d(log(E_phot))) |
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201 | // values stored in GROUPVEL material properties vector |
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202 | velocity = prev_velocity; |
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203 | |
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204 | // check if momentum is same as in the previous step |
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205 | // and calculate group velocity if necessary |
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206 | if( update_groupvel || (fpDynamicParticle->GetTotalMomentum() != prev_momentum) ) { |
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207 | velocity = |
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208 | groupvel->GetProperty(fpDynamicParticle->GetTotalMomentum()); |
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209 | prev_velocity = velocity; |
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210 | prev_momentum = fpDynamicParticle->GetTotalMomentum(); |
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211 | } |
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212 | } |
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213 | } |
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214 | |
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215 | } else { |
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216 | G4double T = fpDynamicParticle->GetKineticEnergy(); |
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217 | velocity = c_light*std::sqrt(T*(T+2.*mass))/(T+mass); |
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218 | } |
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219 | |
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220 | return velocity ; |
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221 | } |
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