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: G4VTwistSurface.icc,v 1.3 2006/06/29 18:48:20 gunter 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 | // G4VTwistSurface class inline methods |
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33 | // |
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34 | // Author: |
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35 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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36 | // |
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37 | // History: |
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38 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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39 | // from original version in Jupiter-2.5.02 application. |
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40 | // -------------------------------------------------------------------- |
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41 | |
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42 | //===================================================================== |
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43 | //* DistanceToPlaneWithV ---------------------------------------------- |
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44 | |
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45 | inline |
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46 | G4double G4VTwistSurface::DistanceToPlaneWithV(const G4ThreeVector &p, |
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47 | const G4ThreeVector &v, |
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48 | const G4ThreeVector &x0, |
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49 | const G4ThreeVector &n0, |
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50 | G4ThreeVector &xx) |
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51 | { |
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52 | G4double t = (n0 * (x0 - p)) / (n0 * v); |
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53 | xx = p + t * v; |
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54 | return t; |
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55 | } |
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56 | |
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57 | //===================================================================== |
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58 | //* DistanceToPlane --------------------------------------------------- |
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59 | |
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60 | inline |
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61 | G4double G4VTwistSurface::DistanceToPlane(const G4ThreeVector &p, |
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62 | const G4ThreeVector &x0, |
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63 | const G4ThreeVector &n0, |
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64 | G4ThreeVector &xx) |
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65 | { |
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66 | // DistanceToPlane : |
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67 | // Calculate distance to plane in local coordinate, |
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68 | // then return distance and global intersection points. |
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69 | // |
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70 | // p - location of flying particle |
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71 | // x0 - reference point of surface |
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72 | // xx - a foot of perpendicular line from p to the plane |
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73 | // t - distance from xx to p |
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74 | // n - a unit normal of this plane from plane to p. |
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75 | // |
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76 | // equation of plane: |
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77 | // n*(x - x0) = 0; |
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78 | // |
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79 | // vector to xx: |
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80 | // xx = p - t*n |
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81 | // |
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82 | // where |
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83 | // t = n * (p - x0) / std::abs(n) |
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84 | // |
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85 | G4double t; |
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86 | G4ThreeVector n = n0.unit(); |
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87 | t = n * (p - x0); |
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88 | xx = p - t * n; |
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89 | return t; |
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90 | } |
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91 | |
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92 | //===================================================================== |
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93 | //* DistanceToPlane --------------------------------------------------- |
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94 | |
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95 | inline |
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96 | G4double G4VTwistSurface::DistanceToPlane(const G4ThreeVector &p, |
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97 | const G4ThreeVector &x0, |
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98 | const G4ThreeVector &t1, |
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99 | const G4ThreeVector &t2, |
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100 | G4ThreeVector &xx, |
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101 | G4ThreeVector &n) |
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102 | { |
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103 | // DistanceToPlane : |
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104 | // Calculate distance to plane in local coordinate, |
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105 | // then return distance and global intersection points. |
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106 | // t1 - 1st. vector lying on the plane |
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107 | // t2 - 2nd. vector lying on the plane |
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108 | |
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109 | n = (t1.cross(t2)).unit(); |
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110 | return DistanceToPlane(p, x0, n, xx); |
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111 | } |
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112 | |
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113 | //===================================================================== |
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114 | //* DistanceToLine ---------------------------------------------------- |
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115 | |
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116 | inline |
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117 | G4double G4VTwistSurface::DistanceToLine(const G4ThreeVector &p, |
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118 | const G4ThreeVector &x0, |
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119 | const G4ThreeVector &d, |
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120 | G4ThreeVector &xx) |
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121 | { |
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122 | // DistanceToLine : |
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123 | // Calculate distance to line, |
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124 | // then return distance and global intersection points. |
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125 | // |
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126 | // p - location of flying particle |
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127 | // x0 - reference point of line |
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128 | // d - direction vector of line |
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129 | // xx - a foot of perpendicular line from p to the plane |
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130 | // t - distance from xx to p |
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131 | // |
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132 | // Equation |
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133 | // |
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134 | // distance^2 = |(xx - p)|^2 |
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135 | // with |
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136 | // xx = x0 + t*d |
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137 | // |
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138 | // (d/dt)distance^2 = (d/dt)|((x0 + t*d) - p)|^2 |
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139 | // = 2*t*|d|^2 + 2*d*(x0 - p) |
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140 | // = 0 // smallest distance |
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141 | // then |
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142 | // t = - d*(x0 - p) / |d|^2 |
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143 | // |
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144 | |
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145 | G4double t; |
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146 | G4ThreeVector dir = d.unit(); |
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147 | t = - dir * (x0 - p); // |dir|^2 = 1. |
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148 | xx = x0 + t * dir; |
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149 | |
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150 | G4ThreeVector dist = xx - p; |
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151 | return dist.mag(); |
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152 | } |
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153 | |
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154 | //===================================================================== |
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155 | //* IsAxis0 ----------------------------------------------------------- |
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156 | |
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157 | inline |
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158 | G4bool G4VTwistSurface::IsAxis0(G4int areacode) const |
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159 | { |
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160 | if (areacode & sAxis0) return true; |
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161 | return false; |
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162 | } |
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163 | |
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164 | //===================================================================== |
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165 | //* IsAxis1 ----------------------------------------------------------- |
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166 | |
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167 | inline |
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168 | G4bool G4VTwistSurface::IsAxis1(G4int areacode) const |
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169 | { |
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170 | if (areacode & sAxis1) return true; |
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171 | return false; |
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172 | } |
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173 | |
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174 | //===================================================================== |
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175 | //* IsOutside --------------------------------------------------------- |
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176 | |
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177 | inline |
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178 | G4bool G4VTwistSurface::IsOutside(G4int areacode) const |
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179 | { |
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180 | if (areacode & sInside) return false; |
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181 | return true; |
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182 | } |
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183 | |
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184 | //===================================================================== |
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185 | //* IsInside ---------------------------------------------------------- |
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186 | |
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187 | inline |
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188 | G4bool G4VTwistSurface::IsInside(G4int areacode, G4bool testbitmode) const |
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189 | { |
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190 | if (areacode & sInside) { |
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191 | if (testbitmode) { |
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192 | return true; |
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193 | } else { |
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194 | if (!((areacode & sBoundary) || (areacode & sCorner))) return true; |
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195 | } |
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196 | } |
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197 | return false; |
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198 | } |
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199 | |
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200 | //===================================================================== |
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201 | //* IsBoundary -------------------------------------------------------- |
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202 | |
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203 | inline |
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204 | G4bool G4VTwistSurface::IsBoundary(G4int areacode, G4bool testbitmode) const |
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205 | { |
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206 | if ((areacode & sBoundary) == sBoundary) { |
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207 | if (testbitmode) { |
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208 | return true; |
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209 | } else { |
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210 | if ((areacode & sInside) == sInside) return true; |
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211 | } |
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212 | } |
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213 | return false; |
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214 | } |
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215 | |
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216 | //===================================================================== |
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217 | //* IsCorner ---------------------------------------------------------- |
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218 | |
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219 | inline |
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220 | G4bool G4VTwistSurface::IsCorner(G4int areacode, G4bool testbitmode) const |
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221 | { |
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222 | if ((areacode & sCorner) == sCorner) { |
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223 | if (testbitmode) { |
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224 | return true; |
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225 | } else { |
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226 | if ((areacode & sInside) == sInside) return true; |
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227 | } |
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228 | } |
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229 | return false; |
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230 | } |
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231 | |
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232 | //===================================================================== |
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233 | //* GetAxisType ------------------------------------------------------- |
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234 | |
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235 | inline |
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236 | G4int G4VTwistSurface::GetAxisType(G4int areacode, G4int whichaxis) const |
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237 | { |
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238 | G4int axiscode = areacode & sAxisMask & whichaxis; |
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239 | |
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240 | if (axiscode == (sAxisX & sAxis0) || |
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241 | axiscode == (sAxisX & sAxis1)) { |
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242 | return sAxisX; |
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243 | } else if (axiscode == (sAxisY & sAxis0) || |
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244 | axiscode == (sAxisY & sAxis1)) { |
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245 | return sAxisY; |
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246 | } else if (axiscode == (sAxisZ & sAxis0) || |
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247 | axiscode == (sAxisZ & sAxis1)) { |
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248 | return sAxisZ; |
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249 | } else if (axiscode == (sAxisRho & sAxis0) || |
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250 | axiscode == (sAxisRho & sAxis1)) { |
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251 | return sAxisRho; |
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252 | } else if (axiscode == (sAxisPhi & sAxis0) || |
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253 | axiscode == (sAxisPhi & sAxis1)) { |
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254 | return sAxisPhi; |
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255 | } else { |
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256 | G4cerr << "ERROR - G4VTwistSurface::GetAxisType()" << G4endl |
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257 | << " areacode = " << areacode << G4endl; |
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258 | G4Exception("G4VTwistSurface::GetAxisType()","NotSupported", |
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259 | FatalException, "Configuration not supported."); |
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260 | } |
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261 | return 1; |
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262 | } |
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263 | |
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264 | //===================================================================== |
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265 | //* ComputeGlobalPoint ------------------------------------------------ |
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266 | |
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267 | inline |
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268 | G4ThreeVector G4VTwistSurface::ComputeGlobalPoint(const G4ThreeVector &lp) const |
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269 | { |
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270 | return fRot * G4ThreeVector(lp) + fTrans; |
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271 | } |
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272 | |
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273 | //===================================================================== |
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274 | //* ComputeGlobalPoint ------------------------------------------------ |
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275 | |
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276 | inline |
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277 | G4ThreeVector G4VTwistSurface::ComputeLocalPoint(const G4ThreeVector &gp) const |
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278 | { |
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279 | return fRot.inverse() * ( G4ThreeVector(gp) - fTrans ) ; |
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280 | } |
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281 | |
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282 | //===================================================================== |
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283 | //* ComputeGlobalDirection -------------------------------------------- |
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284 | |
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285 | inline |
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286 | G4ThreeVector G4VTwistSurface::ComputeGlobalDirection(const G4ThreeVector &lp) const |
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287 | { |
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288 | return fRot * G4ThreeVector(lp); |
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289 | } |
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290 | |
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291 | //===================================================================== |
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292 | //* ComputeLocalDirection --------------------------------------------- |
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293 | |
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294 | inline |
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295 | G4ThreeVector G4VTwistSurface::ComputeLocalDirection(const G4ThreeVector &gp) const |
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296 | { |
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297 | return fRot.inverse() * G4ThreeVector(gp); |
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298 | } |
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299 | |
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300 | //===================================================================== |
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301 | //* SetNeighbours ----------------------------------------------------- |
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302 | |
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303 | inline |
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304 | void G4VTwistSurface::SetNeighbours(G4VTwistSurface* axis0min, G4VTwistSurface* axis1min, |
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305 | G4VTwistSurface* axis0max, G4VTwistSurface* axis1max) |
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306 | { |
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307 | fNeighbours[0] = axis0min; |
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308 | fNeighbours[1] = axis1min; |
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309 | fNeighbours[2] = axis0max; |
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310 | fNeighbours[3] = axis1max; |
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311 | } |
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312 | |
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313 | //===================================================================== |
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314 | //* GetNeighbours ----------------------------------------------------- |
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315 | |
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316 | inline |
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317 | G4int G4VTwistSurface::GetNeighbours(G4int areacode, G4VTwistSurface** surfaces) |
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318 | { |
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319 | |
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320 | int sAxis0Min = sAxis0 & sAxisMin ; |
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321 | int sAxis1Min = sAxis1 & sAxisMin ; |
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322 | int sAxis0Max = sAxis0 & sAxisMax ; |
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323 | int sAxis1Max = sAxis1 & sAxisMax ; |
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324 | |
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325 | G4int i = 0; |
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326 | |
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327 | if ( (areacode & sAxis0Min ) == sAxis0Min ) { |
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328 | surfaces[i] = fNeighbours[0] ; |
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329 | i++ ; |
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330 | } |
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331 | |
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332 | if ( ( areacode & sAxis1Min ) == sAxis1Min ) { |
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333 | surfaces[i] = fNeighbours[1] ; |
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334 | i++ ; |
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335 | if ( i == 2 ) return i ; |
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336 | } |
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337 | |
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338 | if ( ( areacode & sAxis0Max ) == sAxis0Max ) { |
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339 | surfaces[i] = fNeighbours[2] ; |
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340 | i++ ; |
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341 | if ( i == 2 ) return i ; |
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342 | } |
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343 | |
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344 | if ( ( areacode & sAxis1Max ) == sAxis1Max ) { |
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345 | surfaces[i] = fNeighbours[3] ; |
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346 | i++ ; |
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347 | if ( i == 2 ) return i ; |
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348 | } |
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349 | |
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350 | return i ; |
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351 | } |
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352 | |
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353 | //===================================================================== |
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354 | //* GetCorner --------------------------------------------------------- |
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355 | |
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356 | inline |
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357 | G4ThreeVector G4VTwistSurface::GetCorner(G4int areacode) const |
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358 | { |
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359 | if (!(areacode & sCorner)){ |
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360 | G4cerr << "ERROR - G4VTwistSurface::GetCorner()" << G4endl |
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361 | << " areacode = " << areacode << G4endl; |
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362 | G4Exception("G4VTwistSurface::GetCorner()","InvalidSetup", |
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363 | FatalException, "Area code must represent corner."); |
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364 | } |
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365 | |
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366 | if ((areacode & sC0Min1Min) == sC0Min1Min) { |
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367 | return fCorners[0]; |
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368 | } else if ((areacode & sC0Max1Min) == sC0Max1Min) { |
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369 | return fCorners[1]; |
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370 | } else if ((areacode & sC0Max1Max) == sC0Max1Max) { |
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371 | return fCorners[2]; |
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372 | } else if ((areacode & sC0Min1Max) == sC0Min1Max) { |
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373 | return fCorners[3]; |
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374 | } else { |
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375 | G4cerr << "ERROR - G4VTwistSurface::GetCorner()" << G4endl |
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376 | << " areacode = " << areacode << G4endl; |
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377 | G4Exception("G4VTwistSurface::GetCorner()", "NotSupported", |
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378 | FatalException, "Configuration not supported."); |
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379 | } |
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380 | return fCorners[0]; |
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381 | } |
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