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: G4TwistedTubs.hh,v 1.14 2007/05/23 09:32:35 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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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 | // G4TwistedTubs |
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36 | // |
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37 | // Class description: |
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38 | // |
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39 | // G4TwistedTubs is a sort of twisted cylinder. |
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40 | // A twisted cylinder which is placed along with z-axis and is |
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41 | // separated into phi-segments should become a hyperboloid, and |
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42 | // its each segmented piece should be tilted with a stereo angle. |
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43 | // G4TwistedTubs is a G4VSolid. |
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44 | // It can have inner & outer surfaces as well as G4TwistedTubs, |
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45 | // but cannot has different stereo angles between the inner surface |
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46 | // and outer surface. |
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47 | |
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48 | // Author: |
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49 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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50 | // |
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51 | // History: |
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52 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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53 | // from original version in Jupiter-2.5.02 application. |
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54 | // -------------------------------------------------------------------- |
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55 | #ifndef __G4TWISTEDTUBS__ |
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56 | #define __G4TWISTEDTUBS__ |
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57 | |
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58 | #include "G4VSolid.hh" |
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59 | #include "G4TwistTubsFlatSide.hh" |
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60 | #include "G4TwistTubsSide.hh" |
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61 | #include "G4TwistTubsHypeSide.hh" |
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62 | |
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63 | class G4SolidExtentList; |
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64 | class G4ClippablePolygon; |
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65 | |
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66 | class G4TwistedTubs : public G4VSolid |
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67 | { |
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68 | public: // with description |
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69 | |
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70 | G4TwistedTubs(const G4String &pname, // Name of instance |
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71 | G4double twistedangle, // Twisted angle |
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72 | G4double endinnerrad, // Inner radius at endcap |
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73 | G4double endouterrad, // Outer radius at endcap |
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74 | G4double halfzlen, // half z length |
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75 | G4double dphi); // Phi angle of a segment |
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76 | |
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77 | G4TwistedTubs(const G4String &pname, // Name of instance |
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78 | G4double twistedangle, // Stereo angle |
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79 | G4double endinnerrad, // Inner radius at endcap |
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80 | G4double endouterrad, // Outer radius at endcap |
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81 | G4double halfzlen, // half z length |
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82 | G4int nseg, // Number of segments in totalPhi |
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83 | G4double totphi); // Total angle of all segments |
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84 | |
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85 | G4TwistedTubs(const G4String &pname, // Name of instance |
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86 | G4double twistedangle, // Twisted angle |
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87 | G4double innerrad, // Inner radius at z=0 |
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88 | G4double outerrad, // Outer radius at z=0 |
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89 | G4double negativeEndz, // -ve z endplate |
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90 | G4double positiveEndz, // +ve z endplate |
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91 | G4double dphi); // Phi angle of a segment |
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92 | |
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93 | G4TwistedTubs(const G4String &pname, // Name of instance |
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94 | G4double twistedangle, // Stereo angle |
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95 | G4double innerrad, // Inner radius at z=0 |
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96 | G4double outerrad, // Outer radius at z=0 |
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97 | G4double negativeEndz, // -ve z endplate |
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98 | G4double positiveEndz, // +ve z endplate |
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99 | G4int nseg, // Number of segments in totalPhi |
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100 | G4double totphi); // Total angle of all segments |
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101 | |
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102 | virtual ~G4TwistedTubs(); |
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103 | |
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104 | void ComputeDimensions(G4VPVParameterisation * /* p */ , |
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105 | const G4int /* n */ , |
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106 | const G4VPhysicalVolume * /* prep */ ); |
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107 | |
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108 | G4bool CalculateExtent(const EAxis paxis, |
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109 | const G4VoxelLimits &pvoxellimit, |
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110 | const G4AffineTransform &ptransform, |
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111 | G4double &pmin, |
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112 | G4double &pmax ) const; |
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113 | |
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114 | G4double DistanceToIn (const G4ThreeVector &p, |
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115 | const G4ThreeVector &v ) const; |
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116 | |
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117 | G4double DistanceToIn (const G4ThreeVector &p ) const; |
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118 | |
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119 | G4double DistanceToOut(const G4ThreeVector &p, |
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120 | const G4ThreeVector &v, |
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121 | const G4bool calcnorm=G4bool(false), |
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122 | G4bool *validnorm=0, |
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123 | G4ThreeVector *n=0 ) const; |
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124 | |
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125 | G4double DistanceToOut(const G4ThreeVector &p) const; |
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126 | |
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127 | EInside Inside (const G4ThreeVector &p) const; |
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128 | |
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129 | G4ThreeVector SurfaceNormal(const G4ThreeVector &p) const; |
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130 | |
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131 | void DescribeYourselfTo (G4VGraphicsScene &scene) const; |
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132 | G4Polyhedron *CreatePolyhedron () const; |
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133 | G4NURBS *CreateNURBS () const; |
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134 | G4Polyhedron *GetPolyhedron () const; |
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135 | |
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136 | std::ostream &StreamInfo(std::ostream& os) const; |
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137 | |
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138 | // accessors |
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139 | |
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140 | inline G4double GetDPhi () const { return fDPhi ; } |
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141 | inline G4double GetPhiTwist () const { return fPhiTwist ; } |
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142 | inline G4double GetInnerRadius () const { return fInnerRadius; } |
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143 | inline G4double GetOuterRadius () const { return fOuterRadius; } |
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144 | inline G4double GetInnerStereo () const { return fInnerStereo; } |
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145 | inline G4double GetOuterStereo () const { return fOuterStereo; } |
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146 | inline G4double GetZHalfLength () const { return fZHalfLength; } |
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147 | inline G4double GetKappa () const { return fKappa ; } |
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148 | |
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149 | inline G4double GetTanInnerStereo () const { return fTanInnerStereo ; } |
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150 | inline G4double GetTanInnerStereo2() const { return fTanInnerStereo2 ; } |
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151 | inline G4double GetTanOuterStereo () const { return fTanOuterStereo ; } |
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152 | inline G4double GetTanOuterStereo2() const { return fTanOuterStereo2 ; } |
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153 | |
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154 | inline G4double GetEndZ (G4int i) const { return fEndZ[i] ; } |
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155 | inline G4double GetEndPhi (G4int i) const { return fEndPhi[i]; } |
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156 | inline G4double GetEndInnerRadius (G4int i) const |
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157 | { return fEndInnerRadius[i]; } |
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158 | inline G4double GetEndOuterRadius (G4int i) const |
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159 | { return fEndOuterRadius[i]; } |
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160 | inline G4double GetEndInnerRadius () const |
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161 | { return (fEndInnerRadius[0] > fEndInnerRadius[1] ? |
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162 | fEndInnerRadius[0] : fEndInnerRadius[1]); } |
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163 | inline G4double GetEndOuterRadius () const |
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164 | { return (fEndOuterRadius[0] > fEndOuterRadius[1] ? |
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165 | fEndOuterRadius[0] : fEndOuterRadius[1]); } |
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166 | |
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167 | G4VisExtent GetExtent () const; |
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168 | G4GeometryType GetEntityType() const; |
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169 | |
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170 | G4double GetCubicVolume(); |
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171 | // Returns an estimation of the geometrical cubic volume of the |
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172 | // solid. Caches the computed value once computed the first time. |
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173 | G4double GetSurfaceArea(); |
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174 | // Returns an estimation of the geometrical surface area of the |
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175 | // solid. Caches the computed value once computed the first time. |
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176 | |
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177 | G4ThreeVector GetPointOnSurface() const ; |
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178 | |
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179 | public: // without description |
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180 | |
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181 | G4TwistedTubs(__void__&); |
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182 | // Fake default constructor for usage restricted to direct object |
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183 | // persistency for clients requiring preallocation of memory for |
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184 | // persistifiable objects. |
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185 | |
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186 | #ifdef G4TWISTDEBUG |
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187 | G4VTwistSurface * GetOuterHype() const { return fOuterHype; } |
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188 | #endif |
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189 | |
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190 | private: |
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191 | |
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192 | inline void SetFields(G4double phitwist, G4double innerrad, |
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193 | G4double outerrad, |
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194 | G4double negativeEndz, G4double positiveEndz); |
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195 | |
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196 | void CreateSurfaces(); |
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197 | |
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198 | static void AddPolyToExtent( const G4ThreeVector &v0, |
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199 | const G4ThreeVector &v1, |
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200 | const G4ThreeVector &w1, |
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201 | const G4ThreeVector &w0, |
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202 | const G4VoxelLimits &voxellimit, |
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203 | const EAxis axis, |
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204 | G4SolidExtentList &extentlist ); |
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205 | private: |
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206 | |
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207 | G4double fPhiTwist; // Twist angle from -fZHalfLength to fZHalfLength |
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208 | G4double fInnerRadius; // Inner-hype radius at z=0 |
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209 | G4double fOuterRadius; // Outer-hype radius at z=0 |
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210 | G4double fEndZ[2]; // z at endcaps, [0] = -ve z, [1] = +ve z |
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211 | G4double fDPhi; // Phi-width of a segment fDPhi > 0 |
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212 | G4double fZHalfLength; // Half length along z-axis |
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213 | |
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214 | G4double fInnerStereo; // Inner-hype stereo angle |
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215 | G4double fOuterStereo; // Outer-hype stereo angle |
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216 | G4double fTanInnerStereo; // std::tan(innerStereoAngle) |
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217 | G4double fTanOuterStereo; // std::tan(outerStereoAngle) |
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218 | G4double fKappa; // std::tan(fPhiTwist/2)/fZHalfLen; |
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219 | G4double fEndInnerRadius[2]; // Inner-hype radii endcaps [0] -ve z, [1] +ve z |
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220 | G4double fEndOuterRadius[2]; // Outer-hype radii endcaps [0] -ve z, [1] +ve z |
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221 | G4double fEndPhi[2]; // Phi endcaps, [0] = -ve z, [1] = +ve z |
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222 | |
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223 | G4double fInnerRadius2; // fInnerRadius * fInnerRadius |
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224 | G4double fOuterRadius2; // fOuterRadius * fOuterRadius |
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225 | G4double fTanInnerStereo2; // fInnerRadius * fInnerRadius |
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226 | G4double fTanOuterStereo2; // fInnerRadius * fInnerRadius |
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227 | G4double fEndZ2[2]; // fEndZ * fEndZ |
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228 | |
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229 | G4VTwistSurface *fLowerEndcap; // Surface of -ve z |
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230 | G4VTwistSurface *fUpperEndcap; // Surface of +ve z |
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231 | G4VTwistSurface *fLatterTwisted; // Surface of -ve phi |
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232 | G4VTwistSurface *fFormerTwisted; // Surface of +ve phi |
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233 | G4VTwistSurface *fInnerHype; // Surface of -ve r |
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234 | G4VTwistSurface *fOuterHype; // Surface of +ve r |
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235 | |
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236 | G4double fCubicVolume; // Cached value for cubic volume |
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237 | G4double fSurfaceArea; // Cached value for surface area |
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238 | |
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239 | mutable G4Polyhedron* fpPolyhedron; // pointer to polyhedron for vis |
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240 | |
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241 | class LastState // last Inside result |
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242 | { |
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243 | public: |
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244 | LastState() |
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245 | { |
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246 | p.set(kInfinity,kInfinity,kInfinity); |
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247 | inside = kOutside; |
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248 | } |
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249 | ~LastState(){} |
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250 | public: |
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251 | G4ThreeVector p; |
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252 | EInside inside; |
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253 | }; |
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254 | |
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255 | class LastVector // last SurfaceNormal result |
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256 | { |
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257 | public: |
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258 | LastVector() |
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259 | { |
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260 | p.set(kInfinity,kInfinity,kInfinity); |
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261 | vec.set(kInfinity,kInfinity,kInfinity); |
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262 | surface = new G4VTwistSurface*[1]; |
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263 | } |
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264 | ~LastVector() |
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265 | { |
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266 | delete [] surface; |
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267 | } |
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268 | public: |
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269 | G4ThreeVector p; |
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270 | G4ThreeVector vec; |
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271 | G4VTwistSurface **surface; |
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272 | }; |
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273 | |
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274 | class LastValue // last G4double value |
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275 | { |
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276 | public: |
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277 | LastValue() |
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278 | { |
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279 | p.set(kInfinity,kInfinity,kInfinity); |
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280 | value = DBL_MAX; |
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281 | } |
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282 | ~LastValue(){} |
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283 | public: |
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284 | G4ThreeVector p; |
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285 | G4double value; |
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286 | }; |
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287 | |
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288 | class LastValueWithDoubleVector // last G4double value |
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289 | { |
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290 | public: |
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291 | LastValueWithDoubleVector() |
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292 | { |
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293 | p.set(kInfinity,kInfinity,kInfinity); |
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294 | vec.set(kInfinity,kInfinity,kInfinity); |
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295 | value = DBL_MAX; |
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296 | } |
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297 | ~LastValueWithDoubleVector(){} |
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298 | public: |
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299 | G4ThreeVector p; |
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300 | G4ThreeVector vec; |
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301 | G4double value; |
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302 | }; |
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303 | |
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304 | LastState fLastInside; |
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305 | LastVector fLastNormal; |
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306 | LastValue fLastDistanceToIn; |
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307 | LastValue fLastDistanceToOut; |
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308 | LastValueWithDoubleVector fLastDistanceToInWithV; |
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309 | LastValueWithDoubleVector fLastDistanceToOutWithV; |
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310 | |
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311 | }; |
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312 | |
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313 | //===================================================================== |
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314 | |
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315 | //--------------------- |
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316 | // inline functions |
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317 | //--------------------- |
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318 | |
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319 | inline |
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320 | void G4TwistedTubs::SetFields(G4double phitwist, G4double innerrad, |
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321 | G4double outerrad, G4double negativeEndz, |
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322 | G4double positiveEndz) |
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323 | { |
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324 | fCubicVolume = 0.; |
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325 | fPhiTwist = phitwist; |
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326 | fEndZ[0] = negativeEndz; |
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327 | fEndZ[1] = positiveEndz; |
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328 | fEndZ2[0] = fEndZ[0] * fEndZ[0]; |
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329 | fEndZ2[1] = fEndZ[1] * fEndZ[1]; |
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330 | fInnerRadius = innerrad; |
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331 | fOuterRadius = outerrad; |
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332 | fInnerRadius2 = fInnerRadius * fInnerRadius; |
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333 | fOuterRadius2 = fOuterRadius * fOuterRadius; |
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334 | |
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335 | G4int maxi; |
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336 | if (std::fabs(fEndZ[0]) >= std::fabs(fEndZ[1])) { |
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337 | fZHalfLength = std::fabs(fEndZ[0]); |
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338 | maxi = 0; |
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339 | } else { |
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340 | fZHalfLength = std::fabs(fEndZ[1]); |
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341 | maxi = 1; |
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342 | } |
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343 | |
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344 | G4double parity = (fPhiTwist > 0 ? 1 : -1); |
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345 | G4double tanHalfTwist = std::tan(0.5 * fPhiTwist); |
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346 | G4double innerNumerator = std::fabs(fInnerRadius * tanHalfTwist) * parity; |
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347 | G4double outerNumerator = std::fabs(fOuterRadius * tanHalfTwist) * parity; |
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348 | |
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349 | fTanInnerStereo = innerNumerator / fZHalfLength; |
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350 | fTanOuterStereo = outerNumerator / fZHalfLength; |
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351 | fTanInnerStereo2 = fTanInnerStereo * fTanInnerStereo; |
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352 | fTanOuterStereo2 = fTanOuterStereo * fTanOuterStereo; |
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353 | fInnerStereo = std::atan2(innerNumerator, fZHalfLength); |
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354 | fOuterStereo = std::atan2(outerNumerator, fZHalfLength); |
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355 | fEndInnerRadius[0] = std::sqrt(fInnerRadius2 + fEndZ2[0] * fTanInnerStereo2); |
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356 | fEndInnerRadius[1] = std::sqrt(fInnerRadius2 + fEndZ2[1] * fTanInnerStereo2); |
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357 | fEndOuterRadius[0] = std::sqrt(fOuterRadius2 + fEndZ2[0] * fTanOuterStereo2); |
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358 | fEndOuterRadius[1] = std::sqrt(fOuterRadius2 + fEndZ2[1] * fTanOuterStereo2); |
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359 | |
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360 | fKappa = tanHalfTwist / fZHalfLength; |
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361 | fEndPhi[0] = std::atan2(fEndZ[0] * tanHalfTwist, fZHalfLength); |
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362 | fEndPhi[1] = std::atan2(fEndZ[1] * tanHalfTwist, fZHalfLength); |
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363 | |
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364 | #ifdef G4TWISTDEBUG |
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365 | G4cout << "/********* G4TwistedTubs::SetFields() Field Parameters ***************** " << G4endl; |
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366 | G4cout << "/* fPhiTwist : " << fPhiTwist << G4endl; |
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367 | G4cout << "/* fEndZ(0, 1) : " << fEndZ[0] << " , " << fEndZ[1] << G4endl; |
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368 | G4cout << "/* fEndPhi(0, 1) : " << fEndPhi[0] << " , " << fEndPhi[1] << G4endl; |
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369 | G4cout << "/* fInnerRadius, fOuterRadius : " << fInnerRadius << " , " << fOuterRadius << G4endl; |
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370 | G4cout << "/* fEndInnerRadius(0, 1) : " << fEndInnerRadius[0] << " , " |
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371 | << fEndInnerRadius[1] << G4endl; |
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372 | G4cout << "/* fEndOuterRadius(0, 1) : " << fEndOuterRadius[0] << " , " |
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373 | << fEndOuterRadius[1] << G4endl; |
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374 | G4cout << "/* fInnerStereo, fOuterStereo : " << fInnerStereo << " , " << fOuterStereo << G4endl; |
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375 | G4cout << "/* tanHalfTwist, fKappa : " << tanHalfTwist << " , " << fKappa << G4endl; |
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376 | G4cout << "/*********************************************************************** " << G4endl; |
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377 | #endif |
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378 | } |
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379 | |
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380 | #endif |
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