[831] | 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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[1058] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[831] | 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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