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: G4TwistTubsSide.hh,v 1.5 2006/06/29 18:47:58 gunter 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 | // G4TwistTubsSide |
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36 | // |
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37 | // Class description: |
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38 | // |
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39 | // Class describing a twisted boundary surface for a cylinder. |
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40 | |
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41 | // Author: |
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42 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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43 | // |
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44 | // History: |
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45 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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46 | // from original version in Jupiter-2.5.02 application. |
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47 | // -------------------------------------------------------------------- |
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48 | #ifndef __G4TWISTTUBSSIDE__ |
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49 | #define __G4TWISTTUBSSIDE__ |
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50 | |
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51 | #include "G4VTwistSurface.hh" |
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52 | |
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53 | class G4TwistTubsSide : public G4VTwistSurface |
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54 | { |
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55 | public: // with description |
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56 | |
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57 | G4TwistTubsSide(const G4String &name, |
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58 | const G4RotationMatrix &rot, // 0.5*(phi-width segment) |
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59 | const G4ThreeVector &tlate, |
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60 | G4int handedness, // R-hand = 1, L-hand = -1 |
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61 | const G4double kappa, // tan(TwistAngle/2)/fZHalfLen |
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62 | const EAxis axis0 = kXAxis, |
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63 | const EAxis axis1 = kZAxis, |
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64 | G4double axis0min = -kInfinity, |
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65 | G4double axis1min = -kInfinity, |
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66 | G4double axis0max = kInfinity, |
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67 | G4double axis1max = kInfinity ); |
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68 | |
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69 | G4TwistTubsSide(const G4String &name, |
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70 | G4double EndInnerRadius[2], |
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71 | G4double EndOuterRadius[2], |
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72 | G4double DPhi, |
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73 | G4double EndPhi[2], |
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74 | G4double EndZ[2], |
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75 | G4double InnerRadius, |
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76 | G4double OuterRadius, |
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77 | G4double Kappa, |
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78 | G4int handedness); |
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79 | |
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80 | virtual ~G4TwistTubsSide(); |
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81 | |
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82 | virtual G4ThreeVector GetNormal(const G4ThreeVector &xx, |
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83 | G4bool isGlobal = false) ; |
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84 | |
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85 | virtual G4int DistanceToSurface(const G4ThreeVector &gp, |
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86 | const G4ThreeVector &gv, |
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87 | G4ThreeVector gxx[], |
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88 | G4double distance[], |
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89 | G4int areacode[], |
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90 | G4bool isvalid[], |
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91 | EValidate validate = kValidateWithTol); |
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92 | |
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93 | virtual G4int DistanceToSurface(const G4ThreeVector &gp, |
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94 | G4ThreeVector gxx[], |
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95 | G4double distance[], |
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96 | G4int areacode[]); |
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97 | |
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98 | inline G4ThreeVector ProjectAtPXPZ(const G4ThreeVector &p, |
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99 | G4bool isglobal = false) const ; |
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100 | |
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101 | virtual G4ThreeVector SurfacePoint(G4double, G4double, |
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102 | G4bool isGlobal = false) ; |
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103 | virtual G4double GetBoundaryMin(G4double phi) ; |
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104 | virtual G4double GetBoundaryMax(G4double phi) ; |
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105 | virtual G4double GetSurfaceArea() ; |
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106 | virtual void GetFacets( G4int m, G4int n, G4double xyz[][3], |
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107 | G4int faces[][4], G4int iside ) ; |
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108 | |
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109 | public: // without description |
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110 | |
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111 | G4TwistTubsSide(__void__&); |
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112 | // Fake default constructor for usage restricted to direct object |
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113 | // persistency for clients requiring preallocation of memory for |
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114 | // persistifiable objects. |
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115 | |
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116 | private: |
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117 | |
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118 | virtual G4double DistanceToPlane(const G4ThreeVector &p, |
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119 | const G4ThreeVector &A, |
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120 | const G4ThreeVector &B, |
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121 | const G4ThreeVector &C, |
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122 | const G4ThreeVector &D, |
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123 | const G4int parity, |
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124 | G4ThreeVector &xx, |
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125 | G4ThreeVector &n); |
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126 | |
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127 | virtual G4int GetAreaCode(const G4ThreeVector &xx, |
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128 | G4bool withTol = true); |
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129 | |
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130 | virtual void SetCorners(); |
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131 | |
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132 | virtual void SetCorners( G4double endInnerRad[2], |
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133 | G4double endOuterRad[2], |
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134 | G4double endPhi[2], |
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135 | G4double endZ[2] ) ; |
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136 | |
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137 | virtual void SetBoundaries(); |
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138 | |
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139 | private: |
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140 | |
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141 | G4double fKappa; // std::tan(TwistedAngle/2)/HalfLenZ; |
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142 | }; |
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143 | |
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144 | |
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145 | //======================================================== |
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146 | // inline functions |
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147 | //======================================================== |
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148 | |
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149 | inline |
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150 | G4ThreeVector G4TwistTubsSide::ProjectAtPXPZ(const G4ThreeVector &p, |
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151 | G4bool isglobal) const |
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152 | { |
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153 | // Get Rho at p.z() on Hyperbolic Surface. |
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154 | G4ThreeVector tmpp; |
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155 | if (isglobal) { |
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156 | tmpp = fRot.inverse()*p - fTrans; |
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157 | } else { |
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158 | tmpp = p; |
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159 | } |
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160 | G4ThreeVector xx(p.x(), p.x() * fKappa * p.z(), p.z()); |
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161 | if (isglobal) { return (fRot * xx + fTrans); } |
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162 | return xx; |
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163 | } |
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164 | |
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165 | inline |
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166 | G4ThreeVector |
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167 | G4TwistTubsSide::SurfacePoint(G4double x, G4double z, G4bool isGlobal) |
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168 | { |
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169 | G4ThreeVector SurfPoint( x , x * fKappa * z , z ) ; |
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170 | |
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171 | if (isGlobal) { return (fRot * SurfPoint + fTrans); } |
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172 | return SurfPoint; |
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173 | } |
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174 | |
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175 | inline |
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176 | G4double G4TwistTubsSide::GetBoundaryMin(G4double) |
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177 | { |
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178 | return fAxisMin[0] ; // inner radius at z = 0 |
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179 | } |
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180 | |
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181 | inline |
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182 | G4double G4TwistTubsSide::GetBoundaryMax(G4double) |
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183 | { |
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184 | return fAxisMax[0] ; // outer radius at z = 0 |
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185 | } |
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186 | |
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187 | inline |
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188 | G4double G4TwistTubsSide::GetSurfaceArea() |
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189 | { |
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190 | // approximation only |
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191 | return ( fAxisMax[0] - fAxisMin[0] ) * ( fAxisMax[1] - fAxisMin[1] ) ; |
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192 | } |
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193 | |
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194 | #endif |
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