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: G4Torus.hh,v 1.27 2007/05/18 07:38:00 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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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 | // G4Torus |
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35 | // |
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36 | // Class description: |
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37 | // |
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38 | // A torus or torus segment with curved sides parallel to the z-axis. |
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39 | // The torus has a specified swept radius about which it is centered, |
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40 | // and a given minimum and maximum radius. A minimum radius of 0 |
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41 | // signifies a filled torus. |
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42 | // The torus segment is specified by starting and delta angles for phi, |
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43 | // with 0 being the +x axis, PI/2 the +y axis. A delta angle of 2PI |
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44 | // signifies a complete, unsegmented torus/cylindr. |
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45 | // |
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46 | // Member functions: |
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47 | // |
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48 | // As inherited from G4CSGSolid+ |
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49 | // |
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50 | // G4Torus(const G4String &pName |
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51 | // G4double pRmin |
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52 | // G4double pRmax |
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53 | // G4double pRtor |
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54 | // G4double pSPhi |
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55 | // G4double pDPhi ) |
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56 | // |
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57 | // - Construct a torus with the given name and dimensions. |
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58 | // The angles are provided is radians. pRtor >= pRmax |
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59 | // |
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60 | // |
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61 | // Protected: |
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62 | // |
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63 | // G4ThreeVectorList* |
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64 | // CreateRotatedVertices(const G4AffineTransform& pTransform) const |
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65 | // |
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66 | // - Create the List of transformed vertices in the format required |
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67 | // for G4VSolid:: ClipCrossSection and ClipBetweenSections. |
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68 | // |
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69 | // Member Data: |
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70 | // |
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71 | // fRmin Inside radius |
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72 | // fRmax Outside radius |
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73 | // fRtor swept radius of torus |
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74 | // |
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75 | // fSPhi The starting phi angle in radians, |
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76 | // adjusted such that fSPhi+fDPhi<=2PI, fSPhi>-2PI |
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77 | // |
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78 | // fDPhi Delta angle of the segment in radians |
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79 | // |
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80 | // You could find very often in G4Torus functions values like 'pt' or |
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81 | // 'it'. These are the distances from p or i G4ThreeVector points in the |
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82 | // plane (Z axis points p or i) to fRtor point in XY plane. This value is |
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83 | // similar to rho for G4Tubs and is used for definiton of the point |
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84 | // relative to fRmin and fRmax, i.e. for solution of inside/outside |
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85 | // problems |
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86 | |
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87 | // History: |
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88 | // 30.10.96 V.Grichine: first version of G4Torus |
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89 | // 21.04.98 J.Apostolakis: added SetAllParameters() function |
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90 | // 26.05.00 V.Grichine: added new SolveBiQuadratic/Cubic() developed |
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91 | // by O.Cremonesi |
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92 | // 31.08.00 E.Medernach: added SolveNumeric functions, migrated to |
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93 | // numeric solutions |
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94 | // -------------------------------------------------------------------- |
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95 | |
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96 | #ifndef G4Torus_HH |
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97 | #define G4Torus_HH |
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98 | |
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99 | #include "G4CSGSolid.hh" |
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100 | |
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101 | class G4Torus : public G4CSGSolid |
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102 | { |
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103 | |
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104 | public: // with description |
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105 | |
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106 | G4Torus(const G4String &pName, |
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107 | G4double pRmin, |
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108 | G4double pRmax, |
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109 | G4double pRtor, |
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110 | G4double pSPhi, |
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111 | G4double pDPhi); |
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112 | |
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113 | virtual ~G4Torus(); |
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114 | |
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115 | // Accessors |
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116 | |
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117 | inline G4double GetRmin() const; |
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118 | inline G4double GetRmax() const; |
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119 | inline G4double GetRtor() const; |
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120 | inline G4double GetSPhi() const; |
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121 | inline G4double GetDPhi() const; |
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122 | |
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123 | // Methods of solid |
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124 | |
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125 | inline G4double GetCubicVolume(); |
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126 | inline G4double GetSurfaceArea(); |
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127 | |
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128 | EInside Inside(const G4ThreeVector& p) const; |
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129 | G4bool CalculateExtent(const EAxis pAxis, |
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130 | const G4VoxelLimits& pVoxelLimit, |
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131 | const G4AffineTransform& pTransform, |
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132 | G4double& pmin, G4double& pmax) const; |
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133 | void ComputeDimensions( G4VPVParameterisation* p, |
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134 | const G4int n, |
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135 | const G4VPhysicalVolume* pRep); |
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136 | G4ThreeVector SurfaceNormal( const G4ThreeVector& p) const; |
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137 | G4double DistanceToIn(const G4ThreeVector& p,const G4ThreeVector& v) const; |
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138 | G4double DistanceToIn(const G4ThreeVector& p) const; |
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139 | G4double DistanceToOut(const G4ThreeVector& p,const G4ThreeVector& v, |
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140 | const G4bool calcNorm=G4bool(false), |
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141 | G4bool *validNorm=0,G4ThreeVector *n=0) const; |
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142 | G4double DistanceToOut(const G4ThreeVector& p) const; |
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143 | |
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144 | G4GeometryType GetEntityType() const; |
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145 | |
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146 | G4ThreeVector GetPointOnSurface() const; |
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147 | |
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148 | std::ostream& StreamInfo(std::ostream& os) const; |
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149 | |
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150 | // Visualisation functions |
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151 | |
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152 | void DescribeYourselfTo (G4VGraphicsScene& scene) const; |
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153 | G4Polyhedron* CreatePolyhedron () const; |
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154 | G4NURBS* CreateNURBS () const; |
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155 | |
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156 | public: // without description |
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157 | |
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158 | void SetAllParameters(G4double pRmin, G4double pRmax, G4double pRtor, |
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159 | G4double pSPhi, G4double pDPhi); |
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160 | |
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161 | G4Torus(__void__&); |
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162 | // Fake default constructor for usage restricted to direct object |
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163 | // persistency for clients requiring preallocation of memory for |
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164 | // persistifiable objects. |
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165 | |
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166 | protected: |
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167 | |
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168 | std::vector<G4double> TorusRootsJT(const G4ThreeVector& p, |
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169 | const G4ThreeVector& v, |
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170 | G4double r) const ; |
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171 | |
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172 | G4double SolveNumericJT(const G4ThreeVector& p, |
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173 | const G4ThreeVector& v, |
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174 | G4double r, |
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175 | G4bool IsDistanceToIn) const; |
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176 | |
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177 | G4ThreeVectorList* |
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178 | CreateRotatedVertices(const G4AffineTransform& pTransform, |
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179 | G4int& noPolygonVertices) const; |
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180 | |
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181 | protected: |
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182 | |
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183 | G4double fRmin,fRmax,fRtor,fSPhi,fDPhi; |
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184 | |
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185 | // Used by distanceToOut |
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186 | enum ESide {kNull,kRMin,kRMax,kSPhi,kEPhi}; |
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187 | |
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188 | // used by normal |
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189 | enum ENorm {kNRMin,kNRMax,kNSPhi,kNEPhi}; |
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190 | |
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191 | private: |
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192 | |
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193 | G4ThreeVector ApproxSurfaceNormal( const G4ThreeVector& p) const; |
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194 | // Algorithm for SurfaceNormal() following the original |
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195 | // specification for points not on the surface |
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196 | |
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197 | private: |
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198 | |
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199 | G4double kRadTolerance, kAngTolerance; |
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200 | // Radial and angular tolerances |
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201 | }; |
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202 | |
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203 | #include "G4Torus.icc" |
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204 | |
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205 | #endif |
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