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: G4PolyhedraSide.hh,v 1.11 2008/05/15 11:41:59 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03 $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------------- |
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32 | // GEANT 4 class header file |
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33 | // |
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34 | // |
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35 | // G4PolyhedraSide |
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36 | // |
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37 | // Class description: |
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38 | // |
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39 | // Class implementing a face that represents one segmented side |
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40 | // of a polyhedra: |
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41 | // |
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42 | // G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ, |
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43 | // const G4PolyhedraSideRZ *tail, |
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44 | // const G4PolyhedraSideRZ *head, |
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45 | // const G4PolyhedraSideRZ *nextRZ, |
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46 | // G4int numSide, |
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47 | // G4double phiStart, G4double phiTotal, |
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48 | // G4bool phiIsOpen, G4bool isAllBehind=false ) |
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49 | // |
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50 | // Values for r1,z1 and r2,z2 should be specified in clockwise |
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51 | // order in (r,z). |
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52 | |
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53 | // Author: |
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54 | // David C. Williams (davidw@scipp.ucsc.edu) |
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55 | // -------------------------------------------------------------------- |
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56 | |
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57 | #ifndef G4PolyhedraSide_hh |
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58 | #define G4PolyhedraSide_hh |
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59 | |
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60 | #include "G4VCSGface.hh" |
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61 | |
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62 | class G4IntersectingCone; |
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63 | |
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64 | struct G4PolyhedraSideRZ |
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65 | { |
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66 | G4double r, z; // start of vector |
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67 | }; |
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68 | |
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69 | class G4PolyhedraSide : public G4VCSGface |
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70 | { |
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71 | |
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72 | public: // with description |
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73 | |
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74 | G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ, |
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75 | const G4PolyhedraSideRZ *tail, |
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76 | const G4PolyhedraSideRZ *head, |
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77 | const G4PolyhedraSideRZ *nextRZ, |
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78 | G4int numSide, |
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79 | G4double phiStart, G4double phiTotal, |
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80 | G4bool phiIsOpen, G4bool isAllBehind=false ); |
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81 | virtual ~G4PolyhedraSide(); |
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82 | |
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83 | G4PolyhedraSide( const G4PolyhedraSide &source ); |
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84 | G4PolyhedraSide& operator=( const G4PolyhedraSide &source ); |
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85 | |
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86 | G4bool Intersect( const G4ThreeVector &p, const G4ThreeVector &v, |
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87 | G4bool outgoing, G4double surfTolerance, |
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88 | G4double &distance, G4double &distFromSurface, |
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89 | G4ThreeVector &normal, G4bool &allBehind ); |
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90 | |
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91 | G4double Distance( const G4ThreeVector &p, G4bool outgoing ); |
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92 | |
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93 | EInside Inside( const G4ThreeVector &p, G4double tolerance, |
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94 | G4double *bestDistance ); |
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95 | |
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96 | G4ThreeVector Normal( const G4ThreeVector &p, G4double *bestDistance ); |
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97 | |
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98 | G4double Extent( const G4ThreeVector axis ); |
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99 | |
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100 | void CalculateExtent( const EAxis axis, |
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101 | const G4VoxelLimits &voxelLimit, |
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102 | const G4AffineTransform &tranform, |
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103 | G4SolidExtentList &extentList ); |
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104 | |
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105 | G4VCSGface *Clone() { return new G4PolyhedraSide( *this ); } |
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106 | |
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107 | public: // without description |
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108 | |
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109 | // Methods used for GetPointOnSurface() |
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110 | |
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111 | G4double SurfaceTriangle( G4ThreeVector p1, |
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112 | G4ThreeVector p2, |
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113 | G4ThreeVector p3, |
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114 | G4ThreeVector *p4 ); |
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115 | G4ThreeVector GetPointOnPlane( G4ThreeVector p0, G4ThreeVector p1, |
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116 | G4ThreeVector p2, G4ThreeVector p3, |
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117 | G4double *Area ); |
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118 | G4double SurfaceArea(); |
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119 | G4ThreeVector GetPointOnFace(); |
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120 | |
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121 | public: // without description |
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122 | |
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123 | G4PolyhedraSide(__void__&); |
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124 | // Fake default constructor for usage restricted to direct object |
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125 | // persistency for clients requiring preallocation of memory for |
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126 | // persistifiable objects. |
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127 | |
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128 | protected: |
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129 | |
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130 | // |
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131 | // A couple internal data structures |
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132 | // |
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133 | struct sG4PolyhedraSideVec; // Secret recipe for allowing |
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134 | friend struct sG4PolyhedraSideVec; // protected nested structures |
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135 | |
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136 | typedef struct sG4PolyhedraSideEdge |
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137 | { |
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138 | G4ThreeVector normal; // Unit normal to this edge |
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139 | G4ThreeVector corner[2]; // The two corners of this phi edge |
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140 | G4ThreeVector cornNorm[2]; // The normals of these corners |
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141 | } G4PolyhedraSideEdge; |
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142 | |
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143 | typedef struct sG4PolyhedraSideVec |
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144 | { |
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145 | G4ThreeVector normal, // Normal (point out of the shape) |
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146 | center, // Point in center of side |
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147 | surfPhi, // Unit vector on surface pointing along phi |
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148 | surfRZ; // Unit vector on surface pointing along R/Z |
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149 | G4PolyhedraSideEdge *edges[2]; // The phi boundary edges to this side |
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150 | // [0]=low phi [1]=high phi |
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151 | G4ThreeVector edgeNorm[2]; // RZ edge normals [i] at {r[i],z[i]} |
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152 | } G4PolyhedraSideVec; |
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153 | |
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154 | G4bool IntersectSidePlane( const G4ThreeVector &p, const G4ThreeVector &v, |
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155 | const G4PolyhedraSideVec vec, |
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156 | G4double normSign, |
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157 | G4double surfTolerance, |
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158 | G4double &distance, |
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159 | G4double &distFromSurface ); |
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160 | |
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161 | G4int LineHitsSegments( const G4ThreeVector &p, |
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162 | const G4ThreeVector &v, |
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163 | G4int *i1, G4int *i2 ); |
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164 | |
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165 | G4int ClosestPhiSegment( G4double phi ); |
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166 | |
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167 | G4int PhiSegment( G4double phi ); |
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168 | |
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169 | G4double DistanceToOneSide( const G4ThreeVector &p, |
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170 | const G4PolyhedraSideVec &vec, |
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171 | G4double *normDist ); |
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172 | |
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173 | G4double DistanceAway( const G4ThreeVector &p, |
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174 | const G4PolyhedraSideVec &vec, |
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175 | G4double *normDist ); |
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176 | |
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177 | void CopyStuff( const G4PolyhedraSide &source ); |
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178 | |
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179 | protected: |
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180 | |
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181 | G4int numSide; // Number sides |
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182 | G4double r[2], z[2]; // r, z parameters, in specified order |
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183 | G4double startPhi, // Start phi (0 to 2pi), if phiIsOpen |
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184 | deltaPhi, // Delta phi (0 to 2pi), if phiIsOpen |
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185 | endPhi; // End phi (>startPhi), if phiIsOpen |
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186 | G4bool phiIsOpen; // True if there is a phi slice |
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187 | G4bool allBehind; // True if the entire solid is "behind" this face |
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188 | |
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189 | G4IntersectingCone *cone; // Our intersecting cone |
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190 | |
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191 | G4PolyhedraSideVec *vecs; // Vector set for each facet of our face |
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192 | G4PolyhedraSideEdge *edges; // The edges belong to vecs |
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193 | G4double lenRZ, // RZ length of each side |
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194 | lenPhi[2]; // Phi dimensions of each side |
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195 | G4double edgeNorm; // Normal in RZ/Phi space to each side |
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196 | |
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197 | private: |
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198 | |
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199 | G4double kCarTolerance; // Geometrical surface thickness |
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200 | G4double fSurfaceArea; // Surface Area |
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201 | }; |
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202 | |
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203 | #endif |
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