1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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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: G4PhantomParameterisation.cc,v 1.4 2008/01/22 15:02:36 gcosmo Exp $ |
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28 | // GEANT4 tag $ Name:$ |
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29 | // |
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30 | // class G4PhantomParameterisation implementation |
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31 | // |
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32 | // May 2007 Pedro Arce, first version |
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33 | // |
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34 | // -------------------------------------------------------------------- |
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35 | |
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36 | #include "G4PhantomParameterisation.hh" |
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37 | |
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38 | #include "globals.hh" |
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39 | #include "G4VSolid.hh" |
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40 | #include "G4VPhysicalVolume.hh" |
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41 | #include "G4LogicalVolume.hh" |
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42 | #include "G4VVolumeMaterialScanner.hh" |
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43 | #include "G4GeometryTolerance.hh" |
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44 | |
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45 | //------------------------------------------------------------------ |
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46 | G4PhantomParameterisation::G4PhantomParameterisation() |
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47 | { |
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48 | // Initialise data |
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49 | // |
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50 | fMaterialIndices = 0; |
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51 | fContainerWallX = 0.; |
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52 | fContainerWallY = 0.; |
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53 | fContainerWallZ = 0.; |
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54 | |
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55 | kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance(); |
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56 | |
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57 | bSkipEqualMaterials = 1; |
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58 | } |
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59 | |
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60 | |
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61 | //------------------------------------------------------------------ |
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62 | G4PhantomParameterisation::~G4PhantomParameterisation() |
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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 | //------------------------------------------------------------------ |
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68 | void G4PhantomParameterisation:: |
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69 | BuildContainerSolid( G4VPhysicalVolume *pMotherPhysical ) |
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70 | { |
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71 | fContainerSolid = pMotherPhysical->GetLogicalVolume()->GetSolid(); |
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72 | fContainerWallX = fNoVoxelX * fVoxelHalfX; |
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73 | fContainerWallY = fNoVoxelY * fVoxelHalfY; |
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74 | fContainerWallZ = fNoVoxelZ * fVoxelHalfZ; |
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75 | |
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76 | // CheckVoxelsFillContainer(); |
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77 | } |
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78 | |
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79 | |
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80 | //------------------------------------------------------------------ |
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81 | void G4PhantomParameterisation:: |
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82 | ComputeTransformation(const G4int copyNo, G4VPhysicalVolume *physVol ) const |
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83 | { |
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84 | // Voxels cannot be rotated, return translation |
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85 | // |
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86 | G4ThreeVector trans = GetTranslation( copyNo ); |
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87 | |
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88 | physVol->SetTranslation( trans ); |
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89 | } |
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90 | |
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91 | |
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92 | //------------------------------------------------------------------ |
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93 | G4ThreeVector G4PhantomParameterisation:: |
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94 | GetTranslation(const G4int copyNo ) const |
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95 | { |
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96 | CheckCopyNo( copyNo ); |
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97 | |
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98 | size_t nx; |
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99 | size_t ny; |
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100 | size_t nz; |
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101 | |
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102 | ComputeVoxelIndices( copyNo, nx, ny, nz ); |
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103 | |
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104 | G4ThreeVector trans( (2*nx+1)*fVoxelHalfX - fContainerWallX, |
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105 | (2*ny+1)*fVoxelHalfY - fContainerWallY, |
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106 | (2*nz+1)*fVoxelHalfZ - fContainerWallZ); |
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107 | return trans; |
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108 | } |
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109 | |
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110 | |
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111 | //------------------------------------------------------------------ |
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112 | G4VSolid* G4PhantomParameterisation:: |
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113 | ComputeSolid(const G4int, G4VPhysicalVolume *pPhysicalVol) |
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114 | { |
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115 | return pPhysicalVol->GetLogicalVolume()->GetSolid(); |
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116 | } |
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117 | |
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118 | |
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119 | //------------------------------------------------------------------ |
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120 | G4Material* G4PhantomParameterisation:: |
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121 | ComputeMaterial(const G4int copyNo, G4VPhysicalVolume *, const G4VTouchable *) |
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122 | { |
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123 | CheckCopyNo( copyNo ); |
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124 | size_t matIndex = GetMaterialIndex(copyNo); |
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125 | |
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126 | return fMaterials[ matIndex ]; |
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127 | } |
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128 | |
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129 | |
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130 | //------------------------------------------------------------------ |
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131 | size_t G4PhantomParameterisation:: |
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132 | GetMaterialIndex( size_t copyNo ) const |
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133 | { |
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134 | CheckCopyNo( copyNo ); |
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135 | |
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136 | return *(fMaterialIndices+copyNo); |
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137 | } |
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138 | |
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139 | |
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140 | //------------------------------------------------------------------ |
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141 | size_t G4PhantomParameterisation:: |
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142 | GetMaterialIndex( size_t nx, size_t ny, size_t nz ) const |
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143 | { |
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144 | size_t copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz; |
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145 | return GetMaterialIndex( copyNo ); |
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146 | } |
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147 | |
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148 | |
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149 | //------------------------------------------------------------------ |
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150 | G4Material* G4PhantomParameterisation::GetMaterial( size_t nx, size_t ny, size_t nz) const |
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151 | { |
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152 | return fMaterials[GetMaterialIndex(nx,ny,nz)]; |
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153 | } |
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154 | |
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155 | //------------------------------------------------------------------ |
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156 | G4Material* G4PhantomParameterisation::GetMaterial( size_t copyNo ) const |
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157 | { |
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158 | return fMaterials[GetMaterialIndex(copyNo)]; |
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159 | } |
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160 | |
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161 | //------------------------------------------------------------------ |
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162 | void G4PhantomParameterisation:: |
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163 | ComputeVoxelIndices(const G4int copyNo, size_t& nx, |
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164 | size_t& ny, size_t& nz ) const |
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165 | { |
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166 | CheckCopyNo( copyNo ); |
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167 | nx = size_t(copyNo%fNoVoxelX); |
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168 | ny = size_t( (copyNo/fNoVoxelX)%fNoVoxelY ); |
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169 | nz = size_t(copyNo/fNoVoxelXY); |
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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 | void G4PhantomParameterisation:: |
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175 | CheckVoxelsFillContainer( G4double contX, G4double contY, G4double contZ ) const |
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176 | { |
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177 | G4double toleranceForWarning = 0.25*kCarTolerance; |
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178 | |
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179 | // Any bigger value than 0.25*kCarTolerance will give a warning in |
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180 | // G4NormalNavigation::ComputeStep(), because the Inverse of a container |
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181 | // translation that is Z+epsilon gives -Z+epsilon (and the maximum tolerance |
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182 | // in G4Box::Inside is 0.5*kCarTolerance |
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183 | // |
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184 | G4double toleranceForError = 1.*kCarTolerance; |
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185 | |
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186 | // Any bigger value than kCarTolerance will give an error in GetReplicaNo() |
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187 | // |
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188 | if( std::fabs(contX-fNoVoxelX*fVoxelHalfX) >= toleranceForError |
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189 | || std::fabs(contY-fNoVoxelY*fVoxelHalfY) >= toleranceForError |
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190 | || std::fabs(contZ-fNoVoxelZ*fVoxelHalfZ) >= toleranceForError ) |
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191 | { |
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192 | G4cerr << "ERROR - G4PhantomParameterisation::CheckVoxelsFillContainer()" |
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193 | << G4endl |
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194 | << " Voxels do not fully fill the container: " |
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195 | << fContainerSolid->GetName() << G4endl |
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196 | << " DiffX= " << contX-fNoVoxelX*fVoxelHalfX << G4endl |
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197 | << " DiffY= " << contY-fNoVoxelY*fVoxelHalfY << G4endl |
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198 | << " DiffZ= " << contZ-fNoVoxelZ*fVoxelHalfZ << G4endl |
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199 | << " Maximum difference is: " << toleranceForError << G4endl; |
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200 | G4Exception("G4PhantomParameterisation::CheckVoxelsFillContainer()", |
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201 | "InvalidSetup", FatalException, |
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202 | "Voxels do not fully fill the container!"); |
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203 | |
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204 | } |
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205 | else if( std::fabs(contX-fNoVoxelX*fVoxelHalfX) >= toleranceForWarning |
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206 | || std::fabs(contY-fNoVoxelY*fVoxelHalfY) >= toleranceForWarning |
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207 | || std::fabs(contZ-fNoVoxelZ*fVoxelHalfZ) >= toleranceForWarning ) |
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208 | { |
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209 | G4cerr << "WARNING - G4PhantomParameterisation::CheckVoxelsFillContainer()" |
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210 | << G4endl |
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211 | << " Voxels do not fully fill the container: " |
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212 | << fContainerSolid->GetName() << G4endl |
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213 | << " DiffX= " << contX-fNoVoxelX*fVoxelHalfX << G4endl |
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214 | << " DiffY= " << contY-fNoVoxelY*fVoxelHalfY << G4endl |
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215 | << " DiffZ= " << contZ-fNoVoxelZ*fVoxelHalfZ << G4endl |
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216 | << " Maximum difference is: " << toleranceForWarning |
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217 | << G4endl; |
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218 | G4Exception("G4PhantomParameterisation::CheckVoxelsFillContainer()", |
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219 | "InvalidSetup", JustWarning, |
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220 | "Voxels do not fully fill the container!"); |
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221 | } |
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222 | } |
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223 | |
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224 | |
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225 | //------------------------------------------------------------------ |
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226 | G4int G4PhantomParameterisation:: |
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227 | GetReplicaNo( const G4ThreeVector& localPoint, const G4ThreeVector& localDir ) |
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228 | { |
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229 | |
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230 | // Check first that point is really inside voxels |
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231 | // |
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232 | if( fContainerSolid->Inside( localPoint ) == kOutside ) |
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233 | { |
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234 | G4cerr << "ERROR - G4PhantomParameterisation::GetReplicaNo()" << G4endl |
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235 | << " localPoint - " << localPoint |
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236 | << " - is outside container solid: " |
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237 | << fContainerSolid->GetName() << G4endl; |
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238 | G4Exception("G4PhantomParameterisation::GetReplicaNo()", "InvalidSetup", |
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239 | FatalErrorInArgument, "Point outside voxels!"); |
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240 | } |
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241 | |
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242 | // Check the voxel numbers corresponding to localPoint |
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243 | // When a particle is on a surface, it may be between -kCarTolerance and |
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244 | // +kCartolerance. By a simple distance as: |
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245 | // G4int nx = G4int( (localPoint.x()+)/fVoxelHalfX/2.); |
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246 | // those between -kCartolerance and 0 will be placed on voxel N-1 and those |
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247 | // between 0 and kCarTolerance on voxel N. |
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248 | // To avoid precision problems place the tracks that are on the surface on |
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249 | // voxel N-1 if they have negative direction and on voxel N if they have |
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250 | // positive direction. |
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251 | // Add +kCarTolerance so that they are first placed on voxel N, and then |
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252 | // if the direction is negative substract 1 |
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253 | |
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254 | G4double fx = (localPoint.x()+fContainerWallX+kCarTolerance)/(fVoxelHalfX*2.); |
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255 | G4int nx = G4int(fx); |
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256 | |
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257 | G4double fy = (localPoint.y()+fContainerWallY+kCarTolerance)/(fVoxelHalfY*2.); |
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258 | G4int ny = G4int(fy); |
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259 | |
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260 | G4double fz = (localPoint.z()+fContainerWallZ+kCarTolerance)/(fVoxelHalfZ*2.); |
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261 | G4int nz = G4int(fz); |
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262 | |
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263 | // If it is on the surface side, check the direction: if direction is |
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264 | // negative place it on the previous voxel (if direction is positive it is |
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265 | // already in the next voxel...). |
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266 | // Correct also cases where n = -1 or n = fNoVoxel. It is always traced to be |
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267 | // due to multiple scattering: track is entering a voxel but multiple |
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268 | // scattering changes the angle towards outside |
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269 | // |
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270 | if( fx - nx < kCarTolerance/fVoxelHalfX ) |
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271 | { |
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272 | if( localDir.x() < 0 ) |
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273 | { |
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274 | if( nx != 0 ) |
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275 | { |
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276 | nx -= 1; |
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277 | } |
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278 | } |
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279 | else |
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280 | { |
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281 | if( nx == G4int(fNoVoxelX) ) |
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282 | { |
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283 | nx -= 1; |
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284 | } |
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285 | } |
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286 | } |
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287 | if( fy - ny < kCarTolerance/fVoxelHalfY ) |
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288 | { |
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289 | if( localDir.y() < 0 ) |
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290 | { |
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291 | if( ny != 0 ) |
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292 | { |
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293 | ny -= 1; |
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294 | } |
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295 | } |
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296 | else |
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297 | { |
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298 | if( ny == G4int(fNoVoxelY) ) |
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299 | { |
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300 | ny -= 1; |
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301 | } |
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302 | } |
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303 | } |
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304 | if( fz - nz < kCarTolerance/fVoxelHalfZ ) |
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305 | { |
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306 | if( localDir.z() < 0 ) |
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307 | { |
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308 | if( nz != 0 ) |
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309 | { |
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310 | nz -= 1; |
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311 | } |
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312 | } |
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313 | else |
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314 | { |
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315 | if( nz == G4int(fNoVoxelZ) ) |
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316 | { |
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317 | nz -= 1; |
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318 | } |
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319 | } |
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320 | } |
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321 | |
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322 | G4int copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz; |
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323 | |
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324 | // Check if there are still errors |
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325 | // |
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326 | G4bool isOK = true; |
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327 | if( nx < 0 ) |
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328 | { |
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329 | nx = 0; |
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330 | isOK = false; |
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331 | } |
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332 | else if( nx >= G4int(fNoVoxelX) ) |
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333 | { |
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334 | nx = fNoVoxelX-1; |
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335 | isOK = false; |
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336 | } |
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337 | if( ny < 0 ) |
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338 | { |
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339 | ny = 0; |
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340 | isOK = false; |
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341 | } |
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342 | else if( ny >= G4int(fNoVoxelY) ) |
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343 | { |
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344 | ny = fNoVoxelY-1; |
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345 | isOK = false; |
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346 | } |
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347 | if( nz < 0 ) |
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348 | { |
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349 | nz = 0; |
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350 | isOK = false; |
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351 | } |
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352 | else if( nz >= G4int(fNoVoxelZ) ) |
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353 | { |
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354 | nz = fNoVoxelZ-1; |
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355 | isOK = false; |
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356 | } |
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357 | if( !isOK ) |
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358 | { |
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359 | G4cerr << "WARNING - G4PhantomParameterisation::GetReplicaNo()" << G4endl |
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360 | << " LocalPoint: " << localPoint << G4endl |
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361 | << " LocalDir: " << localDir << G4endl |
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362 | << " Voxel container size: " << fContainerWallX |
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363 | << " " << fContainerWallY << " " << fContainerWallZ << G4endl |
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364 | << " LocalPoint - wall: " |
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365 | << localPoint.x()-fContainerWallX << " " |
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366 | << localPoint.y()-fContainerWallY << " " |
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367 | << localPoint.z()-fContainerWallZ << G4endl; |
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368 | G4Exception("G4PhantomParameterisation::GetReplicaNo()", |
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369 | "Wrong-copy-number", JustWarning, |
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370 | "Corrected the copy number! It was negative or too big"); |
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371 | copyNo = nx + fNoVoxelX*ny + fNoVoxelXY*nz; |
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372 | } |
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373 | |
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374 | // CheckCopyNo( copyNo ); // not needed, just for debugging code |
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375 | |
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376 | return copyNo; |
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377 | } |
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378 | |
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379 | |
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380 | //------------------------------------------------------------------ |
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381 | void G4PhantomParameterisation::CheckCopyNo( const G4int copyNo ) const |
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382 | { |
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383 | if( copyNo < 0 || copyNo >= G4int(fNoVoxel) ) |
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384 | { |
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385 | G4cerr << "ERROR - G4PhantomParameterisation::CheckCopyNo()" << G4endl |
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386 | << " Copy number: " << copyNo << G4endl |
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387 | << " Total number of voxels: " << fNoVoxel << G4endl; |
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388 | G4Exception("G4PhantomParameterisation::CheckCopyNo()", |
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389 | "Wrong-copy-number", FatalErrorInArgument, |
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390 | "Copy number is negative or too big!"); |
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391 | } |
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392 | } |
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