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 | // $Id: G4AdjointPosOnPhysVolGenerator.cc,v 1.2 2009/11/18 17:57:59 gcosmo Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | ///////////////////////////////////////////////////////////////////////////// |
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30 | // Class Name: G4AdjointCrossSurfChecker |
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31 | // Author: L. Desorgher |
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32 | // Organisation: SpaceIT GmbH |
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33 | // Contract: ESA contract 21435/08/NL/AT |
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34 | // Customer: ESA/ESTEC |
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35 | ///////////////////////////////////////////////////////////////////////////// |
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36 | |
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37 | #include "G4AdjointPosOnPhysVolGenerator.hh" |
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38 | #include "G4VSolid.hh" |
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39 | #include "G4VoxelLimits.hh" |
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40 | #include "G4AffineTransform.hh" |
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41 | #include "Randomize.hh" |
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42 | #include "G4VPhysicalVolume.hh" |
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43 | #include "G4PhysicalVolumeStore.hh" |
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44 | #include "G4LogicalVolumeStore.hh" |
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45 | |
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46 | G4AdjointPosOnPhysVolGenerator* G4AdjointPosOnPhysVolGenerator::theInstance = 0; |
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47 | |
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48 | //////////////////////////////////////////////////// |
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49 | // |
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50 | G4AdjointPosOnPhysVolGenerator* G4AdjointPosOnPhysVolGenerator::GetInstance() |
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51 | { |
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52 | if(theInstance == 0) { |
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53 | static G4AdjointPosOnPhysVolGenerator manager; |
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54 | theInstance = &manager; |
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55 | } |
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56 | return theInstance; |
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57 | } |
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58 | |
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59 | //////////////////////////////////////////////////// |
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60 | // |
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61 | G4AdjointPosOnPhysVolGenerator::~G4AdjointPosOnPhysVolGenerator() |
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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 | // |
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67 | G4AdjointPosOnPhysVolGenerator::G4AdjointPosOnPhysVolGenerator() |
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68 | { |
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69 | theSolid=0; |
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70 | NStat =1000000; |
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71 | epsilon=0.001; |
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72 | ModelOfSurfaceSource = "OnSolid"; //OnSolid, ExternalSphere, ExternalBox |
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73 | thePhysicalVolume = 0; |
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74 | theTransformationFromPhysVolToWorld = G4AffineTransform(); |
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75 | UseSphere =true; |
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76 | } |
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77 | |
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78 | ///////////////////////////////////////////////////////////////////////////////////////// |
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79 | // |
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80 | G4VPhysicalVolume* G4AdjointPosOnPhysVolGenerator::DefinePhysicalVolume(const G4String& aName) |
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81 | { |
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82 | thePhysicalVolume = 0; |
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83 | theSolid =0; |
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84 | G4PhysicalVolumeStore* thePhysVolStore =G4PhysicalVolumeStore::GetInstance(); |
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85 | for ( unsigned int i=0; i< thePhysVolStore->size();i++){ |
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86 | G4String vol_name =(*thePhysVolStore)[i]->GetName(); |
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87 | if (vol_name == ""){ |
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88 | vol_name = (*thePhysVolStore)[i]->GetLogicalVolume()->GetName(); |
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89 | } |
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90 | if (vol_name == aName){ |
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91 | thePhysicalVolume = (*thePhysVolStore)[i]; |
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92 | } |
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93 | } |
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94 | if (thePhysicalVolume){ |
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95 | theSolid = thePhysicalVolume->GetLogicalVolume()->GetSolid(); |
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96 | ComputeTransformationFromPhysVolToWorld(); |
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97 | /*AreaOfExtSurfaceOfThePhysicalVolume=ComputeAreaOfExtSurface(1.e-3); |
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98 | G4cout<<"Monte Carlo Estimate of the area of the external surface :"<<AreaOfExtSurfaceOfThePhysicalVolume/m/m<<" m2"<<std::endl;*/ |
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99 | } |
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100 | else { |
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101 | G4cout<<"The physical volume with name "<<aName<<" does not exist!!"<<std::endl; |
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102 | G4cout<<"Before generating a source on an external surface of a volume you should select another physical volume"<<std::endl; |
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103 | } |
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104 | return thePhysicalVolume; |
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105 | } |
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106 | ///////////////////////////////////////////////////////////////////////////////////////// |
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107 | // |
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108 | void G4AdjointPosOnPhysVolGenerator::DefinePhysicalVolume1(const G4String& aName) |
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109 | { |
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110 | thePhysicalVolume = DefinePhysicalVolume(aName); |
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111 | } |
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112 | //////////////////////////////////////////////////// |
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113 | // |
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114 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface() |
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115 | { |
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116 | return ComputeAreaOfExtSurface(theSolid); |
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117 | } |
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118 | //////////////////////////////////////////////////// |
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119 | // |
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120 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4int NStat) |
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121 | { |
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122 | return ComputeAreaOfExtSurface(theSolid,NStat); |
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123 | } |
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124 | //////////////////////////////////////////////////// |
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125 | // |
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126 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4double epsilon) |
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127 | { |
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128 | return ComputeAreaOfExtSurface(theSolid,epsilon); |
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129 | } |
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130 | //////////////////////////////////////////////////// |
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131 | // |
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132 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid) |
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133 | { |
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134 | return ComputeAreaOfExtSurface(aSolid,1.e-3); |
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135 | } |
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136 | //////////////////////////////////////////////////// |
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137 | // |
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138 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid,G4int NStat) |
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139 | { |
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140 | if (ModelOfSurfaceSource == "OnSolid" ){ |
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141 | if (UseSphere){ |
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142 | return ComputeAreaOfExtSurfaceStartingFromSphere(aSolid,NStat); |
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143 | |
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144 | } |
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145 | else { |
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146 | return ComputeAreaOfExtSurfaceStartingFromBox(aSolid,NStat); |
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147 | } |
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148 | } |
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149 | else { |
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150 | G4ThreeVector p,dir; |
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151 | if (ModelOfSurfaceSource == "ExternalSphere" ) return GenerateAPositionOnASphereBoundary(aSolid, p,dir); |
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152 | return GenerateAPositionOnABoxBoundary(aSolid, p,dir); |
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153 | } |
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154 | } |
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155 | //////////////////////////////////////////////////// |
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156 | // |
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157 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid,G4double epsilon) |
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158 | { |
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159 | G4int Nstat = G4int(1./(epsilon*epsilon)); |
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160 | return ComputeAreaOfExtSurface(aSolid,Nstat); |
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161 | } |
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162 | //////////////////////////////////////////////////// |
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163 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfASolid(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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164 | { |
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165 | G4double area; |
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166 | area =1.; |
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167 | if (ModelOfSurfaceSource == "OnSolid" ){ |
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168 | return GenerateAPositionOnASolidBoundary(aSolid, p,direction); |
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169 | } |
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170 | if (ModelOfSurfaceSource == "ExternalSphere" ) { |
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171 | area = GenerateAPositionOnASphereBoundary(aSolid, p, direction); |
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172 | return; |
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173 | } |
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174 | area = GenerateAPositionOnABoxBoundary(aSolid, p, direction); |
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175 | return; |
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176 | } |
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177 | //////////////////////////////////////////////////// |
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178 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfTheSolid(G4ThreeVector& p, G4ThreeVector& direction) |
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179 | { |
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180 | GenerateAPositionOnTheExtSurfaceOfASolid(theSolid,p,direction); |
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181 | } |
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182 | //////////////////////////////////////////////////// |
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183 | // |
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184 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurfaceStartingFromBox(G4VSolid* aSolid,G4int Nstat) |
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185 | { |
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186 | G4double area=1.; |
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187 | G4int i=0; |
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188 | G4int j=0; |
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189 | while (i<Nstat){ |
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190 | G4ThreeVector p, direction; |
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191 | area = GenerateAPositionOnABoxBoundary( aSolid,p, direction); |
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192 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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193 | if (dist_to_in<kInfinity/2.) i++; |
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194 | j++; |
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195 | } |
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196 | area=area*double(i)/double(j); |
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197 | return area; |
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198 | } |
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199 | ///////////////////////////////////////////////////////////////////////////////////////// |
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200 | // |
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201 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurfaceStartingFromSphere(G4VSolid* aSolid,G4int Nstat) |
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202 | { |
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203 | G4double area=1.; |
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204 | G4int i=0; |
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205 | G4int j=0; |
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206 | while (i<Nstat){ |
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207 | G4ThreeVector p, direction; |
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208 | area = GenerateAPositionOnASphereBoundary( aSolid,p, direction); |
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209 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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210 | if (dist_to_in<kInfinity/2.) i++; |
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211 | j++; |
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212 | } |
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213 | area=area*double(i)/double(j); |
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214 | |
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215 | return area; |
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216 | } |
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217 | ///////////////////////////////////////////////////////////////////////////////////////// |
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218 | // |
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219 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnASolidBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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220 | { |
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221 | G4bool find_pos =false; |
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222 | G4double area=1.; |
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223 | while (!find_pos){ |
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224 | if (UseSphere) area = GenerateAPositionOnASphereBoundary( aSolid,p, direction); |
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225 | else area = GenerateAPositionOnABoxBoundary( aSolid,p, direction); |
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226 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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227 | if (dist_to_in<kInfinity/2.) { |
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228 | find_pos =true; |
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229 | G4ThreeVector p1=p+ 0.99999*direction*dist_to_in; |
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230 | G4ThreeVector norm =aSolid->SurfaceNormal(p1); |
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231 | p+= 0.999999*direction*dist_to_in; |
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232 | CosThDirComparedToNormal=direction.dot(-norm); |
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233 | //std::cout<<CosThDirComparedToNormal<<std::endl; |
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234 | |
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235 | return; |
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236 | } |
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237 | } |
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238 | } |
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239 | ///////////////////////////////////////////////////////////////////////////////////////// |
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240 | // |
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241 | G4double G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnASphereBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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242 | { |
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243 | G4double minX,maxX,minY,maxY,minZ,maxZ; |
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244 | G4bool yesno; |
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245 | |
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246 | // values needed for CalculateExtent signature |
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247 | |
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248 | G4VoxelLimits limit; // Unlimited |
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249 | G4AffineTransform origin; |
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250 | |
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251 | // min max extents of pSolid along X,Y,Z |
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252 | |
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253 | yesno = aSolid->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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254 | yesno = aSolid->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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255 | yesno = aSolid->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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256 | |
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257 | G4ThreeVector center = G4ThreeVector((minX+maxX)/2.,(minY+maxY)/2.,(minZ+maxZ)/2.); |
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258 | |
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259 | G4double dX=(maxX-minX)/2.; |
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260 | G4double dY=(maxY-minY)/2.; |
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261 | G4double dZ=(maxZ-minZ)/2.; |
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262 | G4double scale=1.01; |
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263 | G4double r=scale*std::sqrt(dX*dX+dY*dY+dZ*dZ); |
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264 | |
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265 | G4double cos_th2 = G4UniformRand(); |
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266 | G4double theta = std::acos(std::sqrt(cos_th2)); |
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267 | G4double phi=G4UniformRand()*3.1415926*2; |
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268 | direction.setRThetaPhi(1.,theta,phi); |
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269 | direction=-direction; |
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270 | G4double cos_th = (1.-2.*G4UniformRand()); |
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271 | theta = std::acos(cos_th); |
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272 | if (G4UniformRand() <0.5) theta=3.1415926-theta; |
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273 | phi=G4UniformRand()*3.1415926*2; |
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274 | p.setRThetaPhi(r,theta,phi); |
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275 | p+=center; |
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276 | direction.rotateY(theta); |
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277 | direction.rotateZ(phi); |
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278 | return 4.*3.1415926*r*r;; |
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279 | } |
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280 | ///////////////////////////////////////////////////////////////////////////////////////// |
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281 | // |
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282 | G4double G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnABoxBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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283 | { |
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284 | |
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285 | G4double ran_var,px,py,pz,minX,maxX,minY,maxY,minZ,maxZ; |
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286 | G4bool yesno; |
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287 | |
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288 | // values needed for CalculateExtent signature |
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289 | |
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290 | G4VoxelLimits limit; // Unlimited |
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291 | G4AffineTransform origin; |
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292 | |
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293 | // min max extents of pSolid along X,Y,Z |
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294 | |
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295 | yesno = aSolid->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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296 | yesno = aSolid->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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297 | yesno = aSolid->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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298 | |
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299 | G4double scale=.1; |
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300 | minX-=scale*std::abs(minX); |
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301 | minY-=scale*std::abs(minY); |
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302 | minZ-=scale*std::abs(minZ); |
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303 | maxX+=scale*std::abs(maxX); |
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304 | maxY+=scale*std::abs(maxY); |
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305 | maxZ+=scale*std::abs(maxZ); |
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306 | |
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307 | G4double dX=(maxX-minX); |
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308 | G4double dY=(maxY-minY); |
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309 | G4double dZ=(maxZ-minZ); |
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310 | |
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311 | G4double XY_prob=2.*dX*dY; |
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312 | G4double YZ_prob=2.*dY*dZ; |
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313 | G4double ZX_prob=2.*dZ*dX; |
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314 | G4double area=XY_prob+YZ_prob+ZX_prob; |
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315 | XY_prob/=area; |
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316 | YZ_prob/=area; |
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317 | ZX_prob/=area; |
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318 | |
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319 | ran_var=G4UniformRand(); |
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320 | G4double cos_th2 = G4UniformRand(); |
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321 | G4double sth = std::sqrt(1.-cos_th2); |
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322 | G4double cth = std::sqrt(cos_th2); |
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323 | G4double phi=G4UniformRand()*3.1415926*2; |
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324 | G4double dirX = sth*std::cos(phi); |
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325 | G4double dirY = sth*std::sin(phi); |
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326 | G4double dirZ = cth; |
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327 | if (ran_var <=XY_prob){ //on the XY faces |
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328 | G4double ran_var1=ran_var/XY_prob; |
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329 | G4double ranX=ran_var1; |
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330 | if (ran_var1<=0.5){ |
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331 | pz=minZ; |
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332 | direction=G4ThreeVector(dirX,dirY,dirZ); |
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333 | ranX=ran_var1*2.; |
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334 | } |
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335 | else{ |
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336 | pz=maxZ; |
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337 | direction=-G4ThreeVector(dirX,dirY,dirZ); |
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338 | ranX=(ran_var1-0.5)*2.; |
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339 | } |
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340 | G4double ranY=G4UniformRand(); |
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341 | px=minX+(maxX-minX)*ranX; |
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342 | py=minY+(maxY-minY)*ranY; |
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343 | } |
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344 | else if (ran_var <=(XY_prob+YZ_prob)){ //on the YZ faces |
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345 | G4double ran_var1=(ran_var-XY_prob)/YZ_prob; |
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346 | G4double ranY=ran_var1; |
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347 | if (ran_var1<=0.5){ |
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348 | px=minX; |
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349 | direction=G4ThreeVector(dirZ,dirX,dirY); |
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350 | ranY=ran_var1*2.; |
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351 | } |
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352 | else{ |
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353 | px=maxX; |
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354 | direction=-G4ThreeVector(dirZ,dirX,dirY); |
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355 | ranY=(ran_var1-0.5)*2.; |
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356 | } |
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357 | G4double ranZ=G4UniformRand(); |
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358 | py=minY+(maxY-minY)*ranY; |
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359 | pz=minZ+(maxZ-minZ)*ranZ; |
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360 | |
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361 | } |
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362 | else{ //on the ZX faces |
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363 | G4double ran_var1=(ran_var-XY_prob-YZ_prob)/ZX_prob; |
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364 | G4double ranZ=ran_var1; |
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365 | if (ran_var1<=0.5){ |
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366 | py=minY; |
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367 | direction=G4ThreeVector(dirY,dirZ,dirX); |
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368 | ranZ=ran_var1*2.; |
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369 | } |
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370 | else{ |
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371 | py=maxY; |
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372 | direction=-G4ThreeVector(dirY,dirZ,dirX); |
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373 | ranZ=(ran_var1-0.5)*2.; |
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374 | } |
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375 | G4double ranX=G4UniformRand(); |
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376 | px=minX+(maxX-minX)*ranX; |
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377 | pz=minZ+(maxZ-minZ)*ranZ; |
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378 | } |
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379 | |
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380 | p=G4ThreeVector(px,py,pz); |
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381 | return area; |
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382 | } |
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383 | ///////////////////////////////////////////////////////////////////////////////////////// |
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384 | // |
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385 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction) |
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386 | { |
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387 | if (!thePhysicalVolume) { |
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388 | G4cout<<"Before generating a source on an external surface of volume you should select a physical volume"<<std::endl; |
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389 | return; |
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390 | }; |
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391 | GenerateAPositionOnTheExtSurfaceOfTheSolid(p,direction); |
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392 | p = theTransformationFromPhysVolToWorld.TransformPoint(p); |
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393 | direction = theTransformationFromPhysVolToWorld.TransformAxis(direction); |
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394 | } |
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395 | ///////////////////////////////////////////////////////////////////////////////////////// |
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396 | // |
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397 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction, |
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398 | G4double& costh_to_normal) |
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399 | { |
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400 | GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(p, direction); |
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401 | costh_to_normal = CosThDirComparedToNormal; |
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402 | } |
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403 | ///////////////////////////////////////////////////////////////////////////////////////// |
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404 | // |
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405 | void G4AdjointPosOnPhysVolGenerator::ComputeTransformationFromPhysVolToWorld() |
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406 | { |
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407 | G4VPhysicalVolume* daughter =thePhysicalVolume; |
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408 | G4LogicalVolume* mother = thePhysicalVolume->GetMotherLogical(); |
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409 | theTransformationFromPhysVolToWorld = G4AffineTransform(); |
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410 | G4PhysicalVolumeStore* thePhysVolStore =G4PhysicalVolumeStore::GetInstance(); |
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411 | while (mother){ |
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412 | theTransformationFromPhysVolToWorld *= |
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413 | G4AffineTransform(daughter->GetFrameRotation(),daughter->GetObjectTranslation()); |
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414 | for ( unsigned int i=0; i< thePhysVolStore->size();i++){ |
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415 | if ((*thePhysVolStore)[i]->GetLogicalVolume() == mother){ |
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416 | daughter = (*thePhysVolStore)[i]; |
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417 | mother =daughter->GetMotherLogical(); |
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418 | break; |
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419 | }; |
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420 | } |
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421 | } |
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422 | } |
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423 | |
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