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: G4NormalNavigation.cc,v 1.11 2010/11/04 08:57:56 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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29 | // |
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30 | // |
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31 | // class G4NormalNavigation Implementation |
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32 | // |
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33 | // Author: P.Kent, 1996 |
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34 | // |
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35 | // -------------------------------------------------------------------- |
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36 | |
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37 | #include "G4NormalNavigation.hh" |
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38 | #include "G4AffineTransform.hh" |
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39 | |
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40 | // ******************************************************************** |
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41 | // Constructor |
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42 | // ******************************************************************** |
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43 | // |
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44 | G4NormalNavigation::G4NormalNavigation() |
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45 | : fCheck(false) |
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46 | { |
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47 | fLogger = new G4NavigationLogger("G4NormalNavigation"); |
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48 | } |
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49 | |
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50 | // ******************************************************************** |
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51 | // Destructor |
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52 | // ******************************************************************** |
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53 | // |
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54 | G4NormalNavigation::~G4NormalNavigation() |
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55 | { |
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56 | delete fLogger; |
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57 | } |
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58 | |
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59 | // ******************************************************************** |
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60 | // ComputeStep |
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61 | // ******************************************************************** |
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62 | // |
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63 | G4double |
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64 | G4NormalNavigation::ComputeStep(const G4ThreeVector &localPoint, |
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65 | const G4ThreeVector &localDirection, |
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66 | const G4double currentProposedStepLength, |
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67 | G4double &newSafety, |
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68 | G4NavigationHistory &history, |
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69 | G4bool &validExitNormal, |
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70 | G4ThreeVector &exitNormal, |
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71 | G4bool &exiting, |
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72 | G4bool &entering, |
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73 | G4VPhysicalVolume *(*pBlockedPhysical), |
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74 | G4int &blockedReplicaNo) |
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75 | { |
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76 | G4VPhysicalVolume *motherPhysical, *samplePhysical, *blockedExitedVol=0; |
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77 | G4LogicalVolume *motherLogical; |
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78 | G4VSolid *motherSolid; |
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79 | G4ThreeVector sampleDirection; |
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80 | G4double ourStep=currentProposedStepLength, motherSafety, ourSafety; |
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81 | G4int localNoDaughters, sampleNo; |
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82 | |
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83 | motherPhysical = history.GetTopVolume(); |
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84 | motherLogical = motherPhysical->GetLogicalVolume(); |
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85 | motherSolid = motherLogical->GetSolid(); |
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86 | |
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87 | // Compute mother safety |
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88 | // |
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89 | motherSafety = motherSolid->DistanceToOut(localPoint); |
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90 | ourSafety = motherSafety; // Working isotropic safety |
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91 | |
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92 | #ifdef G4VERBOSE |
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93 | if ( fCheck ) |
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94 | { |
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95 | fLogger->PreComputeStepLog(motherPhysical, motherSafety, localPoint); |
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96 | } |
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97 | #endif |
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98 | |
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99 | // |
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100 | // Compute daughter safeties & intersections |
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101 | // |
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102 | |
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103 | // Exiting normal optimisation |
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104 | // |
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105 | if ( exiting&&validExitNormal ) |
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106 | { |
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107 | if ( localDirection.dot(exitNormal)>=kMinExitingNormalCosine ) |
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108 | { |
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109 | // Block exited daughter volume |
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110 | // |
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111 | blockedExitedVol =* pBlockedPhysical; |
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112 | ourSafety = 0; |
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113 | } |
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114 | } |
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115 | exiting = false; |
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116 | entering = false; |
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117 | |
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118 | localNoDaughters = motherLogical->GetNoDaughters(); |
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119 | for ( sampleNo=localNoDaughters-1; sampleNo>=0; sampleNo--) |
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120 | { |
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121 | samplePhysical = motherLogical->GetDaughter(sampleNo); |
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122 | if ( samplePhysical!=blockedExitedVol ) |
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123 | { |
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124 | G4AffineTransform sampleTf(samplePhysical->GetRotation(), |
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125 | samplePhysical->GetTranslation()); |
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126 | sampleTf.Invert(); |
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127 | const G4ThreeVector samplePoint = |
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128 | sampleTf.TransformPoint(localPoint); |
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129 | const G4VSolid *sampleSolid = |
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130 | samplePhysical->GetLogicalVolume()->GetSolid(); |
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131 | const G4double sampleSafety = |
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132 | sampleSolid->DistanceToIn(samplePoint); |
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133 | #ifdef G4VERBOSE |
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134 | if( fCheck ) |
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135 | { |
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136 | fLogger->PrintDaughterLog(sampleSolid, samplePoint, sampleSafety, 0); |
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137 | } |
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138 | #endif |
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139 | if ( sampleSafety<ourSafety ) |
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140 | { |
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141 | ourSafety=sampleSafety; |
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142 | } |
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143 | if ( sampleSafety<=ourStep ) |
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144 | { |
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145 | sampleDirection = sampleTf.TransformAxis(localDirection); |
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146 | const G4double sampleStep = |
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147 | sampleSolid->DistanceToIn(samplePoint,sampleDirection); |
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148 | |
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149 | #ifdef G4VERBOSE |
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150 | if( fCheck ) |
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151 | { |
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152 | fLogger->PrintDaughterLog(sampleSolid, samplePoint, |
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153 | sampleSafety, sampleStep); |
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154 | } |
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155 | #endif |
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156 | if ( sampleStep<=ourStep ) |
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157 | { |
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158 | ourStep = sampleStep; |
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159 | entering = true; |
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160 | exiting = false; |
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161 | *pBlockedPhysical = samplePhysical; |
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162 | blockedReplicaNo = -1; |
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163 | #ifdef G4VERBOSE |
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164 | if( fCheck ) |
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165 | { |
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166 | fLogger->AlongComputeStepLog(sampleSolid, samplePoint, |
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167 | sampleDirection, localDirection, sampleSafety, sampleStep); |
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168 | } |
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169 | #endif |
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170 | } |
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171 | } |
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172 | } |
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173 | } |
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174 | if ( currentProposedStepLength<ourSafety ) |
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175 | { |
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176 | // Guaranteed physics limited |
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177 | // |
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178 | entering = false; |
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179 | exiting = false; |
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180 | *pBlockedPhysical = 0; |
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181 | ourStep = kInfinity; |
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182 | } |
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183 | else |
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184 | { |
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185 | // Compute mother intersection if required |
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186 | // |
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187 | if ( motherSafety<=ourStep ) |
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188 | { |
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189 | G4double motherStep = motherSolid->DistanceToOut(localPoint, |
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190 | localDirection, |
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191 | true, |
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192 | &validExitNormal, |
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193 | &exitNormal); |
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194 | #ifdef G4VERBOSE |
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195 | if ( fCheck ) |
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196 | { |
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197 | fLogger->PostComputeStepLog(motherSolid, localPoint, localDirection, |
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198 | motherStep, motherSafety); |
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199 | } |
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200 | #endif |
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201 | |
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202 | if ( motherStep<=ourStep ) |
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203 | { |
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204 | ourStep = motherStep; |
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205 | exiting = true; |
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206 | entering = false; |
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207 | if ( validExitNormal ) |
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208 | { |
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209 | const G4RotationMatrix *rot = motherPhysical->GetRotation(); |
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210 | if (rot) |
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211 | { |
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212 | exitNormal *= rot->inverse(); |
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213 | } |
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214 | } |
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215 | } |
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216 | else |
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217 | { |
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218 | validExitNormal = false; |
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219 | } |
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220 | } |
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221 | } |
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222 | newSafety = ourSafety; |
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223 | return ourStep; |
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224 | } |
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225 | |
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226 | // ******************************************************************** |
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227 | // ComputeSafety |
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228 | // ******************************************************************** |
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229 | // |
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230 | G4double G4NormalNavigation::ComputeSafety(const G4ThreeVector &localPoint, |
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231 | const G4NavigationHistory &history, |
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232 | const G4double) |
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233 | { |
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234 | G4VPhysicalVolume *motherPhysical, *samplePhysical; |
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235 | G4LogicalVolume *motherLogical; |
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236 | G4VSolid *motherSolid; |
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237 | G4double motherSafety, ourSafety; |
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238 | G4int localNoDaughters, sampleNo; |
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239 | |
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240 | motherPhysical = history.GetTopVolume(); |
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241 | motherLogical = motherPhysical->GetLogicalVolume(); |
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242 | motherSolid = motherLogical->GetSolid(); |
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243 | |
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244 | // Compute mother safety |
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245 | // |
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246 | motherSafety = motherSolid->DistanceToOut(localPoint); |
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247 | ourSafety = motherSafety; // Working isotropic safety |
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248 | |
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249 | #ifdef G4VERBOSE |
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250 | if( fCheck ) |
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251 | { |
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252 | fLogger->ComputeSafetyLog(motherSolid, localPoint, motherSafety, true); |
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253 | } |
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254 | #endif |
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255 | |
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256 | // Compute daughter safeties |
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257 | // |
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258 | localNoDaughters = motherLogical->GetNoDaughters(); |
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259 | for ( sampleNo=localNoDaughters-1; sampleNo>=0; sampleNo-- ) |
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260 | { |
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261 | samplePhysical = motherLogical->GetDaughter(sampleNo); |
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262 | G4AffineTransform sampleTf(samplePhysical->GetRotation(), |
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263 | samplePhysical->GetTranslation()); |
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264 | sampleTf.Invert(); |
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265 | const G4ThreeVector samplePoint = |
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266 | sampleTf.TransformPoint(localPoint); |
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267 | const G4VSolid *sampleSolid = |
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268 | samplePhysical->GetLogicalVolume()->GetSolid(); |
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269 | const G4double sampleSafety = |
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270 | sampleSolid->DistanceToIn(samplePoint); |
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271 | if ( sampleSafety<ourSafety ) |
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272 | { |
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273 | ourSafety = sampleSafety; |
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274 | } |
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275 | #ifdef G4VERBOSE |
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276 | if(fCheck) |
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277 | { |
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278 | fLogger->ComputeSafetyLog(sampleSolid, samplePoint, sampleSafety, false); |
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279 | } |
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280 | #endif |
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281 | } |
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282 | return ourSafety; |
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283 | } |
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