[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: G4TwistedTubs.cc,v 1.24 2007/05/18 07:39:56 gcosmo 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 | // GEANT 4 class source file |
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| 33 | // |
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| 34 | // |
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| 35 | // G4TwistTubsSide.cc |
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| 36 | // |
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| 37 | // Author: |
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| 38 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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| 39 | // |
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| 40 | // History: |
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| 41 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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| 42 | // from original version in Jupiter-2.5.02 application. |
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| 43 | // -------------------------------------------------------------------- |
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| 44 | |
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| 45 | #include "G4TwistedTubs.hh" |
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| 46 | |
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| 47 | #include "G4GeometryTolerance.hh" |
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| 48 | #include "G4VoxelLimits.hh" |
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| 49 | #include "G4AffineTransform.hh" |
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| 50 | #include "G4SolidExtentList.hh" |
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| 51 | #include "G4ClippablePolygon.hh" |
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| 52 | #include "G4VPVParameterisation.hh" |
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| 53 | #include "meshdefs.hh" |
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| 54 | |
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| 55 | #include "G4VGraphicsScene.hh" |
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| 56 | #include "G4Polyhedron.hh" |
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| 57 | #include "G4VisExtent.hh" |
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| 58 | #include "G4NURBS.hh" |
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| 59 | #include "G4NURBStube.hh" |
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| 60 | #include "G4NURBScylinder.hh" |
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| 61 | #include "G4NURBStubesector.hh" |
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| 62 | |
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| 63 | #include "Randomize.hh" |
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| 64 | |
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| 65 | //===================================================================== |
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| 66 | //* constructors ------------------------------------------------------ |
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| 67 | |
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| 68 | G4TwistedTubs::G4TwistedTubs(const G4String &pname, |
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| 69 | G4double twistedangle, |
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| 70 | G4double endinnerrad, |
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| 71 | G4double endouterrad, |
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| 72 | G4double halfzlen, |
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| 73 | G4double dphi) |
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| 74 | : G4VSolid(pname), fDPhi(dphi), |
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| 75 | fLowerEndcap(0), fUpperEndcap(0), fLatterTwisted(0), |
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| 76 | fFormerTwisted(0), fInnerHype(0), fOuterHype(0), |
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| 77 | fCubicVolume(0.), fSurfaceArea(0.), fpPolyhedron(0) |
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| 78 | { |
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| 79 | if (endinnerrad < DBL_MIN) |
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| 80 | { |
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| 81 | G4Exception("G4TwistedTubs::G4TwistedTubs()", "InvalidSetup", |
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| 82 | FatalException, "Invalid end-inner-radius!"); |
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| 83 | } |
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| 84 | |
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| 85 | G4double sinhalftwist = std::sin(0.5 * twistedangle); |
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| 86 | |
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| 87 | G4double endinnerradX = endinnerrad * sinhalftwist; |
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| 88 | G4double innerrad = std::sqrt( endinnerrad * endinnerrad |
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| 89 | - endinnerradX * endinnerradX ); |
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| 90 | |
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| 91 | G4double endouterradX = endouterrad * sinhalftwist; |
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| 92 | G4double outerrad = std::sqrt( endouterrad * endouterrad |
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| 93 | - endouterradX * endouterradX ); |
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| 94 | |
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| 95 | // temporary treatment!! |
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| 96 | SetFields(twistedangle, innerrad, outerrad, -halfzlen, halfzlen); |
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| 97 | CreateSurfaces(); |
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| 98 | } |
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| 99 | |
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| 100 | G4TwistedTubs::G4TwistedTubs(const G4String &pname, |
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| 101 | G4double twistedangle, |
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| 102 | G4double endinnerrad, |
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| 103 | G4double endouterrad, |
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| 104 | G4double halfzlen, |
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| 105 | G4int nseg, |
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| 106 | G4double totphi) |
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| 107 | : G4VSolid(pname), |
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| 108 | fLowerEndcap(0), fUpperEndcap(0), fLatterTwisted(0), |
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| 109 | fFormerTwisted(0), fInnerHype(0), fOuterHype(0), |
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| 110 | fCubicVolume(0.), fSurfaceArea(0.), fpPolyhedron(0) |
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| 111 | { |
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| 112 | |
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| 113 | if (!nseg) |
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| 114 | { |
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| 115 | G4cerr << "ERROR - G4TwistedTubs::G4TwistedTubs()" << G4endl |
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| 116 | << " Invalid nseg. nseg = " << nseg << G4endl; |
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| 117 | } |
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| 118 | if (totphi == DBL_MIN || endinnerrad < DBL_MIN) |
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| 119 | { |
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| 120 | G4Exception("G4TwistedTubs::G4TwistedTubs()", "InvalidSetup", |
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| 121 | FatalException, "Invalid total-phi or end-inner-radius!"); |
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| 122 | } |
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| 123 | |
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| 124 | G4double sinhalftwist = std::sin(0.5 * twistedangle); |
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| 125 | |
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| 126 | G4double endinnerradX = endinnerrad * sinhalftwist; |
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| 127 | G4double innerrad = std::sqrt( endinnerrad * endinnerrad |
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| 128 | - endinnerradX * endinnerradX ); |
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| 129 | |
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| 130 | G4double endouterradX = endouterrad * sinhalftwist; |
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| 131 | G4double outerrad = std::sqrt( endouterrad * endouterrad |
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| 132 | - endouterradX * endouterradX ); |
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| 133 | |
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| 134 | // temporary treatment!! |
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| 135 | fDPhi = totphi / nseg; |
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| 136 | SetFields(twistedangle, innerrad, outerrad, -halfzlen, halfzlen); |
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| 137 | CreateSurfaces(); |
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| 138 | } |
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| 139 | |
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| 140 | G4TwistedTubs::G4TwistedTubs(const G4String &pname, |
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| 141 | G4double twistedangle, |
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| 142 | G4double innerrad, |
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| 143 | G4double outerrad, |
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| 144 | G4double negativeEndz, |
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| 145 | G4double positiveEndz, |
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| 146 | G4double dphi) |
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| 147 | : G4VSolid(pname), fDPhi(dphi), |
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| 148 | fLowerEndcap(0), fUpperEndcap(0), fLatterTwisted(0), |
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| 149 | fFormerTwisted(0), fInnerHype(0), fOuterHype(0), |
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| 150 | fCubicVolume(0.), fSurfaceArea(0.), fpPolyhedron(0) |
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| 151 | { |
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| 152 | if (innerrad < DBL_MIN) |
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| 153 | { |
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| 154 | G4Exception("G4TwistedTubs::G4TwistedTubs()", "InvalidSetup", |
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| 155 | FatalException, "Invalid end-inner-radius!"); |
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| 156 | } |
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| 157 | |
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| 158 | SetFields(twistedangle, innerrad, outerrad, negativeEndz, positiveEndz); |
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| 159 | CreateSurfaces(); |
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| 160 | } |
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| 161 | |
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| 162 | G4TwistedTubs::G4TwistedTubs(const G4String &pname, |
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| 163 | G4double twistedangle, |
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| 164 | G4double innerrad, |
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| 165 | G4double outerrad, |
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| 166 | G4double negativeEndz, |
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| 167 | G4double positiveEndz, |
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| 168 | G4int nseg, |
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| 169 | G4double totphi) |
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| 170 | : G4VSolid(pname), |
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| 171 | fLowerEndcap(0), fUpperEndcap(0), fLatterTwisted(0), |
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| 172 | fFormerTwisted(0), fInnerHype(0), fOuterHype(0), |
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| 173 | fCubicVolume(0.), fSurfaceArea(0.), fpPolyhedron(0) |
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| 174 | { |
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| 175 | if (!nseg) |
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| 176 | { |
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| 177 | G4cerr << "ERROR - G4TwistedTubs::G4TwistedTubs()" << G4endl |
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| 178 | << " Invalid nseg. nseg = " << nseg << G4endl; |
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| 179 | } |
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| 180 | if (totphi == DBL_MIN || innerrad < DBL_MIN) |
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| 181 | { |
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| 182 | G4Exception("G4TwistedTubs::G4TwistedTubs()", "InvalidSetup", |
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| 183 | FatalException, "Invalid total-phi or end-inner-radius!"); |
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| 184 | } |
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| 185 | |
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| 186 | fDPhi = totphi / nseg; |
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| 187 | SetFields(twistedangle, innerrad, outerrad, negativeEndz, positiveEndz); |
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| 188 | CreateSurfaces(); |
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| 189 | } |
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| 190 | |
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| 191 | //===================================================================== |
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| 192 | //* Fake default constructor ------------------------------------------ |
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| 193 | |
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| 194 | G4TwistedTubs::G4TwistedTubs( __void__& a ) |
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| 195 | : G4VSolid(a), fLowerEndcap(0), fUpperEndcap(0), fLatterTwisted(0), |
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| 196 | fFormerTwisted(0), fInnerHype(0), fOuterHype(0), fCubicVolume(0.), |
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| 197 | fSurfaceArea(0.), fpPolyhedron(0) |
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| 198 | { |
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| 199 | } |
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| 200 | |
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| 201 | //===================================================================== |
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| 202 | //* destructor -------------------------------------------------------- |
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| 203 | |
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| 204 | G4TwistedTubs::~G4TwistedTubs() |
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| 205 | { |
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| 206 | if (fLowerEndcap) { delete fLowerEndcap; } |
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| 207 | if (fUpperEndcap) { delete fUpperEndcap; } |
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| 208 | if (fLatterTwisted) { delete fLatterTwisted; } |
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| 209 | if (fFormerTwisted) { delete fFormerTwisted; } |
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| 210 | if (fInnerHype) { delete fInnerHype; } |
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| 211 | if (fOuterHype) { delete fOuterHype; } |
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| 212 | if (fpPolyhedron) { delete fpPolyhedron; } |
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| 213 | } |
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| 214 | |
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| 215 | //===================================================================== |
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| 216 | //* ComputeDimensions ------------------------------------------------- |
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| 217 | |
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| 218 | void G4TwistedTubs::ComputeDimensions(G4VPVParameterisation* /* p */ , |
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| 219 | const G4int /* n */ , |
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| 220 | const G4VPhysicalVolume* /* pRep */ ) |
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| 221 | { |
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| 222 | G4Exception("G4TwistedTubs::ComputeDimensions()", |
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| 223 | "NotSupported", FatalException, |
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| 224 | "G4TwistedTubs does not support Parameterisation."); |
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| 225 | } |
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| 226 | |
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| 227 | |
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| 228 | //===================================================================== |
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| 229 | //* CalculateExtent --------------------------------------------------- |
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| 230 | |
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| 231 | G4bool G4TwistedTubs::CalculateExtent( const EAxis axis, |
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| 232 | const G4VoxelLimits &voxelLimit, |
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| 233 | const G4AffineTransform &transform, |
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| 234 | G4double &min, |
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| 235 | G4double &max ) const |
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| 236 | { |
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| 237 | |
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| 238 | G4SolidExtentList extentList( axis, voxelLimit ); |
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| 239 | G4double maxEndOuterRad = (fEndOuterRadius[0] > fEndOuterRadius[1] ? |
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| 240 | fEndOuterRadius[0] : fEndOuterRadius[1]); |
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| 241 | G4double maxEndInnerRad = (fEndInnerRadius[0] > fEndInnerRadius[1] ? |
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| 242 | fEndInnerRadius[0] : fEndInnerRadius[1]); |
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| 243 | G4double maxphi = (std::fabs(fEndPhi[0]) > std::fabs(fEndPhi[1]) ? |
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| 244 | std::fabs(fEndPhi[0]) : std::fabs(fEndPhi[1])); |
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| 245 | |
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| 246 | // |
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| 247 | // Choose phi size of our segment(s) based on constants as |
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| 248 | // defined in meshdefs.hh |
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| 249 | // |
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| 250 | // G4int numPhi = kMaxMeshSections; |
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| 251 | G4double sigPhi = 2*maxphi + fDPhi; |
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| 252 | G4double rFudge = 1.0/std::cos(0.5*sigPhi); |
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| 253 | G4double fudgeEndOuterRad = rFudge * maxEndOuterRad; |
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| 254 | |
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| 255 | // |
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| 256 | // We work around in phi building polygons along the way. |
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| 257 | // As a reasonable compromise between accuracy and |
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| 258 | // complexity (=cpu time), the following facets are chosen: |
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| 259 | // |
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| 260 | // 1. If fOuterRadius/maxEndOuterRad > 0.95, approximate |
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| 261 | // the outer surface as a cylinder, and use one |
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| 262 | // rectangular polygon (0-1) to build its mesh. |
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| 263 | // |
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| 264 | // Otherwise, use two trapazoidal polygons that |
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| 265 | // meet at z = 0 (0-4-1) |
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| 266 | // |
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| 267 | // 2. If there is no inner surface, then use one |
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| 268 | // polygon for each entire endcap. (0) and (1) |
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| 269 | // |
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| 270 | // Otherwise, use a trapazoidal polygon for each |
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| 271 | // phi segment of each endcap. (0-2) and (1-3) |
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| 272 | // |
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| 273 | // 3. For the inner surface, if fInnerRadius/maxEndInnerRad > 0.95, |
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| 274 | // approximate the inner surface as a cylinder of |
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| 275 | // radius fInnerRadius and use one rectangular polygon |
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| 276 | // to build each phi segment of its mesh. (2-3) |
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| 277 | // |
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| 278 | // Otherwise, use one rectangular polygon centered |
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| 279 | // at z = 0 (5-6) and two connecting trapazoidal polygons |
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| 280 | // for each phi segment (2-5) and (3-6). |
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| 281 | // |
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| 282 | |
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| 283 | G4bool splitOuter = (fOuterRadius/maxEndOuterRad < 0.95); |
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| 284 | G4bool splitInner = (fInnerRadius/maxEndInnerRad < 0.95); |
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| 285 | |
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| 286 | // |
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| 287 | // Vertex assignments (v and w arrays) |
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| 288 | // [0] and [1] are mandatory |
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| 289 | // the rest are optional |
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| 290 | // |
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| 291 | // + - |
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| 292 | // [0]------[4]------[1] <--- outer radius |
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| 293 | // | | |
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| 294 | // | | |
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| 295 | // [2]---[5]---[6]---[3] <--- inner radius |
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| 296 | // |
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| 297 | |
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| 298 | G4ClippablePolygon endPoly1, endPoly2; |
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| 299 | |
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| 300 | G4double phimax = maxphi + 0.5*fDPhi; |
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| 301 | G4double phimin = - phimax; |
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| 302 | |
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| 303 | G4ThreeVector v0, v1, v2, v3, v4, v5, v6; // -ve phi verticies for polygon |
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| 304 | G4ThreeVector w0, w1, w2, w3, w4, w5, w6; // +ve phi verticies for polygon |
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| 305 | |
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| 306 | // |
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| 307 | // decide verticies of -ve phi boundary |
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| 308 | // |
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| 309 | |
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| 310 | G4double cosPhi = std::cos(phimin); |
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| 311 | G4double sinPhi = std::sin(phimin); |
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| 312 | |
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| 313 | // Outer hyperbolic surface |
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| 314 | |
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| 315 | v0 = transform.TransformPoint( |
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| 316 | G4ThreeVector(fudgeEndOuterRad*cosPhi, fudgeEndOuterRad*sinPhi, |
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| 317 | + fZHalfLength)); |
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| 318 | v1 = transform.TransformPoint( |
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| 319 | G4ThreeVector(fudgeEndOuterRad*cosPhi, fudgeEndOuterRad*sinPhi, |
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| 320 | - fZHalfLength)); |
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| 321 | if (splitOuter) |
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| 322 | { |
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| 323 | v4 = transform.TransformPoint( |
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| 324 | G4ThreeVector(fudgeEndOuterRad*cosPhi, fudgeEndOuterRad*sinPhi, 0)); |
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| 325 | } |
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| 326 | |
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| 327 | // Inner hyperbolic surface |
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| 328 | |
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| 329 | G4double zInnerSplit = 0.; |
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| 330 | if (splitInner) |
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| 331 | { |
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| 332 | v2 = transform.TransformPoint( |
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| 333 | G4ThreeVector(maxEndInnerRad*cosPhi, maxEndInnerRad*sinPhi, |
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| 334 | + fZHalfLength)); |
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| 335 | v3 = transform.TransformPoint( |
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| 336 | G4ThreeVector(maxEndInnerRad*cosPhi, maxEndInnerRad*sinPhi, |
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| 337 | - fZHalfLength)); |
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| 338 | |
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| 339 | // Find intersection of tangential line of inner |
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| 340 | // surface at z = fZHalfLength and line r=fInnerRadius. |
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| 341 | G4double dr = fZHalfLength * fTanInnerStereo2; |
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| 342 | G4double dz = maxEndInnerRad; |
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| 343 | zInnerSplit = fZHalfLength + (fInnerRadius - maxEndInnerRad) * dz / dr; |
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| 344 | |
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| 345 | // Build associated vertices |
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| 346 | v5 = transform.TransformPoint( |
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| 347 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 348 | + zInnerSplit)); |
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| 349 | v6 = transform.TransformPoint( |
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| 350 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 351 | - zInnerSplit)); |
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| 352 | } |
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| 353 | else |
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| 354 | { |
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| 355 | v2 = transform.TransformPoint( |
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| 356 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 357 | + fZHalfLength)); |
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| 358 | v3 = transform.TransformPoint( |
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| 359 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 360 | - fZHalfLength)); |
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| 361 | } |
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| 362 | |
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| 363 | // |
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| 364 | // decide vertices of +ve phi boundary |
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| 365 | // |
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| 366 | |
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| 367 | cosPhi = std::cos(phimax); |
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| 368 | sinPhi = std::sin(phimax); |
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| 369 | |
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| 370 | // Outer hyperbolic surface |
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| 371 | |
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| 372 | w0 = transform.TransformPoint( |
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| 373 | G4ThreeVector(fudgeEndOuterRad*cosPhi, fudgeEndOuterRad*sinPhi, |
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| 374 | + fZHalfLength)); |
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| 375 | w1 = transform.TransformPoint( |
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| 376 | G4ThreeVector(fudgeEndOuterRad*cosPhi, fudgeEndOuterRad*sinPhi, |
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| 377 | - fZHalfLength)); |
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| 378 | if (splitOuter) |
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| 379 | { |
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| 380 | G4double r = rFudge*fOuterRadius; |
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| 381 | |
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| 382 | w4 = transform.TransformPoint(G4ThreeVector( r*cosPhi, r*sinPhi, 0 )); |
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| 383 | |
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| 384 | AddPolyToExtent( v0, v4, w4, w0, voxelLimit, axis, extentList ); |
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| 385 | AddPolyToExtent( v4, v1, w1, w4, voxelLimit, axis, extentList ); |
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| 386 | } |
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| 387 | else |
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| 388 | { |
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| 389 | AddPolyToExtent( v0, v1, w1, w0, voxelLimit, axis, extentList ); |
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| 390 | } |
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| 391 | |
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| 392 | // Inner hyperbolic surface |
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| 393 | |
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| 394 | if (splitInner) |
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| 395 | { |
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| 396 | w2 = transform.TransformPoint( |
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| 397 | G4ThreeVector(maxEndInnerRad*cosPhi, maxEndInnerRad*sinPhi, |
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| 398 | + fZHalfLength)); |
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| 399 | w3 = transform.TransformPoint( |
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| 400 | G4ThreeVector(maxEndInnerRad*cosPhi, maxEndInnerRad*sinPhi, |
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| 401 | - fZHalfLength)); |
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| 402 | |
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| 403 | w5 = transform.TransformPoint( |
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| 404 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 405 | + zInnerSplit)); |
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| 406 | w6 = transform.TransformPoint( |
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| 407 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 408 | - zInnerSplit)); |
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| 409 | |
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| 410 | AddPolyToExtent( v3, v6, w6, w3, voxelLimit, axis, extentList ); |
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| 411 | AddPolyToExtent( v6, v5, w5, w6, voxelLimit, axis, extentList ); |
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| 412 | AddPolyToExtent( v5, v2, w2, w5, voxelLimit, axis, extentList ); |
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| 413 | |
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| 414 | } |
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| 415 | else |
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| 416 | { |
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| 417 | w2 = transform.TransformPoint( |
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| 418 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 419 | + fZHalfLength)); |
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| 420 | w3 = transform.TransformPoint( |
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| 421 | G4ThreeVector(fInnerRadius*cosPhi, fInnerRadius*sinPhi, |
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| 422 | - fZHalfLength)); |
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| 423 | |
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| 424 | AddPolyToExtent( v3, v2, w2, w3, voxelLimit, axis, extentList ); |
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| 425 | } |
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| 426 | |
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| 427 | // |
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| 428 | // Endplate segments |
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| 429 | // |
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| 430 | AddPolyToExtent( v1, v3, w3, w1, voxelLimit, axis, extentList ); |
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| 431 | AddPolyToExtent( v2, v0, w0, w2, voxelLimit, axis, extentList ); |
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| 432 | |
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| 433 | // |
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| 434 | // Return min/max value |
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| 435 | // |
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| 436 | return extentList.GetExtent( min, max ); |
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| 437 | } |
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| 438 | |
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| 439 | |
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| 440 | //===================================================================== |
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| 441 | //* AddPolyToExtent --------------------------------------------------- |
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| 442 | |
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| 443 | void G4TwistedTubs::AddPolyToExtent( const G4ThreeVector &v0, |
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| 444 | const G4ThreeVector &v1, |
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| 445 | const G4ThreeVector &w1, |
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| 446 | const G4ThreeVector &w0, |
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| 447 | const G4VoxelLimits &voxelLimit, |
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| 448 | const EAxis axis, |
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| 449 | G4SolidExtentList &extentList ) |
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| 450 | { |
---|
| 451 | // Utility function for CalculateExtent |
---|
| 452 | // |
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| 453 | G4ClippablePolygon phiPoly; |
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| 454 | |
---|
| 455 | phiPoly.AddVertexInOrder( v0 ); |
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| 456 | phiPoly.AddVertexInOrder( v1 ); |
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| 457 | phiPoly.AddVertexInOrder( w1 ); |
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| 458 | phiPoly.AddVertexInOrder( w0 ); |
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| 459 | |
---|
| 460 | if (phiPoly.PartialClip( voxelLimit, axis )) |
---|
| 461 | { |
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| 462 | phiPoly.SetNormal( (v1-v0).cross(w0-v0).unit() ); |
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| 463 | extentList.AddSurface( phiPoly ); |
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| 464 | } |
---|
| 465 | } |
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| 466 | |
---|
| 467 | |
---|
| 468 | //===================================================================== |
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| 469 | //* Inside ------------------------------------------------------------ |
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| 470 | |
---|
| 471 | EInside G4TwistedTubs::Inside(const G4ThreeVector& p) const |
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| 472 | { |
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| 473 | |
---|
| 474 | static const G4double halftol |
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| 475 | = 0.5 * G4GeometryTolerance::GetInstance()->GetRadialTolerance(); |
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| 476 | // static G4int timerid = -1; |
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| 477 | // G4Timer timer(timerid, "G4TwistedTubs", "Inside"); |
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| 478 | // timer.Start(); |
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| 479 | |
---|
| 480 | |
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| 481 | |
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| 482 | G4ThreeVector *tmpp; |
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| 483 | EInside *tmpinside; |
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| 484 | if (fLastInside.p == p) |
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| 485 | { |
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| 486 | return fLastInside.inside; |
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| 487 | } |
---|
| 488 | else |
---|
| 489 | { |
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| 490 | tmpp = const_cast<G4ThreeVector*>(&(fLastInside.p)); |
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| 491 | tmpinside = const_cast<EInside*>(&(fLastInside.inside)); |
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| 492 | tmpp->set(p.x(), p.y(), p.z()); |
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| 493 | } |
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| 494 | |
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| 495 | EInside outerhypearea = ((G4TwistTubsHypeSide *)fOuterHype)->Inside(p); |
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| 496 | G4double innerhyperho = ((G4TwistTubsHypeSide *)fInnerHype)->GetRhoAtPZ(p); |
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| 497 | G4double distanceToOut = p.getRho() - innerhyperho; // +ve: inside |
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| 498 | |
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| 499 | if ((outerhypearea == kOutside) || (distanceToOut < -halftol)) |
---|
| 500 | { |
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| 501 | *tmpinside = kOutside; |
---|
| 502 | } |
---|
| 503 | else if (outerhypearea == kSurface) |
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| 504 | { |
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| 505 | *tmpinside = kSurface; |
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| 506 | } |
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| 507 | else |
---|
| 508 | { |
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| 509 | if (distanceToOut <= halftol) |
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| 510 | { |
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| 511 | *tmpinside = kSurface; |
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| 512 | } |
---|
| 513 | else |
---|
| 514 | { |
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| 515 | *tmpinside = kInside; |
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| 516 | } |
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| 517 | } |
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| 518 | |
---|
| 519 | return fLastInside.inside; |
---|
| 520 | } |
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| 521 | |
---|
| 522 | //===================================================================== |
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| 523 | //* SurfaceNormal ----------------------------------------------------- |
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| 524 | |
---|
| 525 | G4ThreeVector G4TwistedTubs::SurfaceNormal(const G4ThreeVector& p) const |
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| 526 | { |
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| 527 | // |
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| 528 | // return the normal unit vector to the Hyperbolical Surface at a point |
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| 529 | // p on (or nearly on) the surface |
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| 530 | // |
---|
| 531 | // Which of the three or four surfaces are we closest to? |
---|
| 532 | // |
---|
| 533 | |
---|
| 534 | if (fLastNormal.p == p) |
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| 535 | { |
---|
| 536 | return fLastNormal.vec; |
---|
| 537 | } |
---|
| 538 | G4ThreeVector *tmpp = |
---|
| 539 | const_cast<G4ThreeVector*>(&(fLastNormal.p)); |
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| 540 | G4ThreeVector *tmpnormal = |
---|
| 541 | const_cast<G4ThreeVector*>(&(fLastNormal.vec)); |
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| 542 | G4VTwistSurface **tmpsurface = |
---|
| 543 | const_cast<G4VTwistSurface**>(fLastNormal.surface); |
---|
| 544 | tmpp->set(p.x(), p.y(), p.z()); |
---|
| 545 | |
---|
| 546 | G4double distance = kInfinity; |
---|
| 547 | |
---|
| 548 | G4VTwistSurface *surfaces[6]; |
---|
| 549 | surfaces[0] = fLatterTwisted; |
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| 550 | surfaces[1] = fFormerTwisted; |
---|
| 551 | surfaces[2] = fInnerHype; |
---|
| 552 | surfaces[3] = fOuterHype; |
---|
| 553 | surfaces[4] = fLowerEndcap; |
---|
| 554 | surfaces[5] = fUpperEndcap; |
---|
| 555 | |
---|
| 556 | G4ThreeVector xx; |
---|
| 557 | G4ThreeVector bestxx; |
---|
| 558 | G4int i; |
---|
| 559 | G4int besti = -1; |
---|
| 560 | for (i=0; i< 6; i++) |
---|
| 561 | { |
---|
| 562 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
| 563 | if (tmpdistance < distance) |
---|
| 564 | { |
---|
| 565 | distance = tmpdistance; |
---|
| 566 | bestxx = xx; |
---|
| 567 | besti = i; |
---|
| 568 | } |
---|
| 569 | } |
---|
| 570 | |
---|
| 571 | tmpsurface[0] = surfaces[besti]; |
---|
| 572 | *tmpnormal = tmpsurface[0]->GetNormal(bestxx, true); |
---|
| 573 | |
---|
| 574 | return fLastNormal.vec; |
---|
| 575 | } |
---|
| 576 | |
---|
| 577 | //===================================================================== |
---|
| 578 | //* DistanceToIn (p, v) ----------------------------------------------- |
---|
| 579 | |
---|
| 580 | G4double G4TwistedTubs::DistanceToIn (const G4ThreeVector& p, |
---|
| 581 | const G4ThreeVector& v ) const |
---|
| 582 | { |
---|
| 583 | |
---|
| 584 | // DistanceToIn (p, v): |
---|
| 585 | // Calculate distance to surface of shape from `outside' |
---|
| 586 | // along with the v, allowing for tolerance. |
---|
| 587 | // The function returns kInfinity if no intersection or |
---|
| 588 | // just grazing within tolerance. |
---|
| 589 | |
---|
| 590 | // |
---|
| 591 | // checking last value |
---|
| 592 | // |
---|
| 593 | |
---|
| 594 | G4ThreeVector *tmpp; |
---|
| 595 | G4ThreeVector *tmpv; |
---|
| 596 | G4double *tmpdist; |
---|
| 597 | if ((fLastDistanceToInWithV.p == p) && (fLastDistanceToInWithV.vec == v)) |
---|
| 598 | { |
---|
| 599 | return fLastDistanceToIn.value; |
---|
| 600 | } |
---|
| 601 | else |
---|
| 602 | { |
---|
| 603 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToInWithV.p)); |
---|
| 604 | tmpv = const_cast<G4ThreeVector*>(&(fLastDistanceToInWithV.vec)); |
---|
| 605 | tmpdist = const_cast<G4double*>(&(fLastDistanceToInWithV.value)); |
---|
| 606 | tmpp->set(p.x(), p.y(), p.z()); |
---|
| 607 | tmpv->set(v.x(), v.y(), v.z()); |
---|
| 608 | } |
---|
| 609 | |
---|
| 610 | // |
---|
| 611 | // Calculate DistanceToIn(p,v) |
---|
| 612 | // |
---|
| 613 | |
---|
| 614 | EInside currentside = Inside(p); |
---|
| 615 | |
---|
| 616 | if (currentside == kInside) |
---|
| 617 | { |
---|
| 618 | } |
---|
| 619 | else |
---|
| 620 | { |
---|
| 621 | if (currentside == kSurface) |
---|
| 622 | { |
---|
| 623 | // particle is just on a boundary. |
---|
| 624 | // If the particle is entering to the volume, return 0. |
---|
| 625 | // |
---|
| 626 | G4ThreeVector normal = SurfaceNormal(p); |
---|
| 627 | if (normal*v < 0) |
---|
| 628 | { |
---|
| 629 | *tmpdist = 0; |
---|
| 630 | return fLastDistanceToInWithV.value; |
---|
| 631 | } |
---|
| 632 | } |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | // now, we can take smallest positive distance. |
---|
| 636 | |
---|
| 637 | // Initialize |
---|
| 638 | // |
---|
| 639 | G4double distance = kInfinity; |
---|
| 640 | |
---|
| 641 | // find intersections and choose nearest one. |
---|
| 642 | // |
---|
| 643 | G4VTwistSurface *surfaces[6]; |
---|
| 644 | surfaces[0] = fLowerEndcap; |
---|
| 645 | surfaces[1] = fUpperEndcap; |
---|
| 646 | surfaces[2] = fLatterTwisted; |
---|
| 647 | surfaces[3] = fFormerTwisted; |
---|
| 648 | surfaces[4] = fInnerHype; |
---|
| 649 | surfaces[5] = fOuterHype; |
---|
| 650 | |
---|
| 651 | G4ThreeVector xx; |
---|
| 652 | G4ThreeVector bestxx; |
---|
| 653 | G4int i; |
---|
| 654 | G4int besti = -1; |
---|
| 655 | for (i=0; i< 6; i++) |
---|
| 656 | { |
---|
| 657 | G4double tmpdistance = surfaces[i]->DistanceToIn(p, v, xx); |
---|
| 658 | if (tmpdistance < distance) |
---|
| 659 | { |
---|
| 660 | distance = tmpdistance; |
---|
| 661 | bestxx = xx; |
---|
| 662 | besti = i; |
---|
| 663 | } |
---|
| 664 | } |
---|
| 665 | *tmpdist = distance; |
---|
| 666 | |
---|
| 667 | return fLastDistanceToInWithV.value; |
---|
| 668 | } |
---|
| 669 | |
---|
| 670 | //===================================================================== |
---|
| 671 | //* DistanceToIn (p) -------------------------------------------------- |
---|
| 672 | |
---|
| 673 | G4double G4TwistedTubs::DistanceToIn (const G4ThreeVector& p) const |
---|
| 674 | { |
---|
| 675 | // DistanceToIn(p): |
---|
| 676 | // Calculate distance to surface of shape from `outside', |
---|
| 677 | // allowing for tolerance |
---|
| 678 | |
---|
| 679 | // |
---|
| 680 | // checking last value |
---|
| 681 | // |
---|
| 682 | |
---|
| 683 | G4ThreeVector *tmpp; |
---|
| 684 | G4double *tmpdist; |
---|
| 685 | if (fLastDistanceToIn.p == p) |
---|
| 686 | { |
---|
| 687 | return fLastDistanceToIn.value; |
---|
| 688 | } |
---|
| 689 | else |
---|
| 690 | { |
---|
| 691 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToIn.p)); |
---|
| 692 | tmpdist = const_cast<G4double*>(&(fLastDistanceToIn.value)); |
---|
| 693 | tmpp->set(p.x(), p.y(), p.z()); |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | // |
---|
| 697 | // Calculate DistanceToIn(p) |
---|
| 698 | // |
---|
| 699 | |
---|
| 700 | EInside currentside = Inside(p); |
---|
| 701 | |
---|
| 702 | switch (currentside) |
---|
| 703 | { |
---|
| 704 | case (kInside) : |
---|
| 705 | {} |
---|
| 706 | case (kSurface) : |
---|
| 707 | { |
---|
| 708 | *tmpdist = 0.; |
---|
| 709 | return fLastDistanceToIn.value; |
---|
| 710 | } |
---|
| 711 | case (kOutside) : |
---|
| 712 | { |
---|
| 713 | // Initialize |
---|
| 714 | G4double distance = kInfinity; |
---|
| 715 | |
---|
| 716 | // find intersections and choose nearest one. |
---|
| 717 | G4VTwistSurface *surfaces[6]; |
---|
| 718 | surfaces[0] = fLowerEndcap; |
---|
| 719 | surfaces[1] = fUpperEndcap; |
---|
| 720 | surfaces[2] = fLatterTwisted; |
---|
| 721 | surfaces[3] = fFormerTwisted; |
---|
| 722 | surfaces[4] = fInnerHype; |
---|
| 723 | surfaces[5] = fOuterHype; |
---|
| 724 | |
---|
| 725 | G4int i; |
---|
| 726 | G4int besti = -1; |
---|
| 727 | G4ThreeVector xx; |
---|
| 728 | G4ThreeVector bestxx; |
---|
| 729 | for (i=0; i< 6; i++) |
---|
| 730 | { |
---|
| 731 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
| 732 | if (tmpdistance < distance) |
---|
| 733 | { |
---|
| 734 | distance = tmpdistance; |
---|
| 735 | bestxx = xx; |
---|
| 736 | besti = i; |
---|
| 737 | } |
---|
| 738 | } |
---|
| 739 | *tmpdist = distance; |
---|
| 740 | return fLastDistanceToIn.value; |
---|
| 741 | } |
---|
| 742 | default : |
---|
| 743 | { |
---|
| 744 | G4Exception("G4TwistedTubs::DistanceToIn(p)", "InvalidCondition", |
---|
| 745 | FatalException, "Unknown point location!"); |
---|
| 746 | } |
---|
| 747 | } // switch end |
---|
| 748 | |
---|
| 749 | return kInfinity; |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | //===================================================================== |
---|
| 753 | //* DistanceToOut (p, v) ---------------------------------------------- |
---|
| 754 | |
---|
| 755 | G4double G4TwistedTubs::DistanceToOut( const G4ThreeVector& p, |
---|
| 756 | const G4ThreeVector& v, |
---|
| 757 | const G4bool calcNorm, |
---|
| 758 | G4bool *validNorm, |
---|
| 759 | G4ThreeVector *norm ) const |
---|
| 760 | { |
---|
| 761 | // DistanceToOut (p, v): |
---|
| 762 | // Calculate distance to surface of shape from `inside' |
---|
| 763 | // along with the v, allowing for tolerance. |
---|
| 764 | // The function returns kInfinity if no intersection or |
---|
| 765 | // just grazing within tolerance. |
---|
| 766 | |
---|
| 767 | // |
---|
| 768 | // checking last value |
---|
| 769 | // |
---|
| 770 | |
---|
| 771 | G4ThreeVector *tmpp; |
---|
| 772 | G4ThreeVector *tmpv; |
---|
| 773 | G4double *tmpdist; |
---|
| 774 | if ((fLastDistanceToOutWithV.p == p) && (fLastDistanceToOutWithV.vec == v) ) |
---|
| 775 | { |
---|
| 776 | return fLastDistanceToOutWithV.value; |
---|
| 777 | } |
---|
| 778 | else |
---|
| 779 | { |
---|
| 780 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToOutWithV.p)); |
---|
| 781 | tmpv = const_cast<G4ThreeVector*>(&(fLastDistanceToOutWithV.vec)); |
---|
| 782 | tmpdist = const_cast<G4double*>(&(fLastDistanceToOutWithV.value)); |
---|
| 783 | tmpp->set(p.x(), p.y(), p.z()); |
---|
| 784 | tmpv->set(v.x(), v.y(), v.z()); |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | // |
---|
| 788 | // Calculate DistanceToOut(p,v) |
---|
| 789 | // |
---|
| 790 | |
---|
| 791 | EInside currentside = Inside(p); |
---|
| 792 | |
---|
| 793 | if (currentside == kOutside) |
---|
| 794 | { |
---|
| 795 | } |
---|
| 796 | else |
---|
| 797 | { |
---|
| 798 | if (currentside == kSurface) |
---|
| 799 | { |
---|
| 800 | // particle is just on a boundary. |
---|
| 801 | // If the particle is exiting from the volume, return 0. |
---|
| 802 | // |
---|
| 803 | G4ThreeVector normal = SurfaceNormal(p); |
---|
| 804 | G4VTwistSurface *blockedsurface = fLastNormal.surface[0]; |
---|
| 805 | if (normal*v > 0) |
---|
| 806 | { |
---|
| 807 | if (calcNorm) |
---|
| 808 | { |
---|
| 809 | *norm = (blockedsurface->GetNormal(p, true)); |
---|
| 810 | *validNorm = blockedsurface->IsValidNorm(); |
---|
| 811 | } |
---|
| 812 | *tmpdist = 0.; |
---|
| 813 | return fLastDistanceToOutWithV.value; |
---|
| 814 | } |
---|
| 815 | } |
---|
| 816 | } |
---|
| 817 | |
---|
| 818 | // now, we can take smallest positive distance. |
---|
| 819 | |
---|
| 820 | // Initialize |
---|
| 821 | // |
---|
| 822 | G4double distance = kInfinity; |
---|
| 823 | |
---|
| 824 | // find intersections and choose nearest one. |
---|
| 825 | // |
---|
| 826 | G4VTwistSurface *surfaces[6]; |
---|
| 827 | surfaces[0] = fLatterTwisted; |
---|
| 828 | surfaces[1] = fFormerTwisted; |
---|
| 829 | surfaces[2] = fInnerHype; |
---|
| 830 | surfaces[3] = fOuterHype; |
---|
| 831 | surfaces[4] = fLowerEndcap; |
---|
| 832 | surfaces[5] = fUpperEndcap; |
---|
| 833 | |
---|
| 834 | G4int i; |
---|
| 835 | G4int besti = -1; |
---|
| 836 | G4ThreeVector xx; |
---|
| 837 | G4ThreeVector bestxx; |
---|
| 838 | for (i=0; i< 6; i++) |
---|
| 839 | { |
---|
| 840 | G4double tmpdistance = surfaces[i]->DistanceToOut(p, v, xx); |
---|
| 841 | if (tmpdistance < distance) |
---|
| 842 | { |
---|
| 843 | distance = tmpdistance; |
---|
| 844 | bestxx = xx; |
---|
| 845 | besti = i; |
---|
| 846 | } |
---|
| 847 | } |
---|
| 848 | |
---|
| 849 | if (calcNorm) |
---|
| 850 | { |
---|
| 851 | if (besti != -1) |
---|
| 852 | { |
---|
| 853 | *norm = (surfaces[besti]->GetNormal(p, true)); |
---|
| 854 | *validNorm = surfaces[besti]->IsValidNorm(); |
---|
| 855 | } |
---|
| 856 | } |
---|
| 857 | |
---|
| 858 | *tmpdist = distance; |
---|
| 859 | |
---|
| 860 | return fLastDistanceToOutWithV.value; |
---|
| 861 | } |
---|
| 862 | |
---|
| 863 | |
---|
| 864 | //===================================================================== |
---|
| 865 | //* DistanceToOut (p) ---------------------------------------------- |
---|
| 866 | |
---|
| 867 | G4double G4TwistedTubs::DistanceToOut( const G4ThreeVector& p ) const |
---|
| 868 | { |
---|
| 869 | // DistanceToOut(p): |
---|
| 870 | // Calculate distance to surface of shape from `inside', |
---|
| 871 | // allowing for tolerance |
---|
| 872 | |
---|
| 873 | // |
---|
| 874 | // checking last value |
---|
| 875 | // |
---|
| 876 | |
---|
| 877 | G4ThreeVector *tmpp; |
---|
| 878 | G4double *tmpdist; |
---|
| 879 | if (fLastDistanceToOut.p == p) |
---|
| 880 | { |
---|
| 881 | return fLastDistanceToOut.value; |
---|
| 882 | } |
---|
| 883 | else |
---|
| 884 | { |
---|
| 885 | tmpp = const_cast<G4ThreeVector*>(&(fLastDistanceToOut.p)); |
---|
| 886 | tmpdist = const_cast<G4double*>(&(fLastDistanceToOut.value)); |
---|
| 887 | tmpp->set(p.x(), p.y(), p.z()); |
---|
| 888 | } |
---|
| 889 | |
---|
| 890 | // |
---|
| 891 | // Calculate DistanceToOut(p) |
---|
| 892 | // |
---|
| 893 | |
---|
| 894 | EInside currentside = Inside(p); |
---|
| 895 | |
---|
| 896 | switch (currentside) |
---|
| 897 | { |
---|
| 898 | case (kOutside) : |
---|
| 899 | { |
---|
| 900 | } |
---|
| 901 | case (kSurface) : |
---|
| 902 | { |
---|
| 903 | *tmpdist = 0.; |
---|
| 904 | return fLastDistanceToOut.value; |
---|
| 905 | } |
---|
| 906 | case (kInside) : |
---|
| 907 | { |
---|
| 908 | // Initialize |
---|
| 909 | G4double distance = kInfinity; |
---|
| 910 | |
---|
| 911 | // find intersections and choose nearest one. |
---|
| 912 | G4VTwistSurface *surfaces[6]; |
---|
| 913 | surfaces[0] = fLatterTwisted; |
---|
| 914 | surfaces[1] = fFormerTwisted; |
---|
| 915 | surfaces[2] = fInnerHype; |
---|
| 916 | surfaces[3] = fOuterHype; |
---|
| 917 | surfaces[4] = fLowerEndcap; |
---|
| 918 | surfaces[5] = fUpperEndcap; |
---|
| 919 | |
---|
| 920 | G4int i; |
---|
| 921 | G4int besti = -1; |
---|
| 922 | G4ThreeVector xx; |
---|
| 923 | G4ThreeVector bestxx; |
---|
| 924 | for (i=0; i< 6; i++) |
---|
| 925 | { |
---|
| 926 | G4double tmpdistance = surfaces[i]->DistanceTo(p, xx); |
---|
| 927 | if (tmpdistance < distance) |
---|
| 928 | { |
---|
| 929 | distance = tmpdistance; |
---|
| 930 | bestxx = xx; |
---|
| 931 | besti = i; |
---|
| 932 | } |
---|
| 933 | } |
---|
| 934 | *tmpdist = distance; |
---|
| 935 | |
---|
| 936 | return fLastDistanceToOut.value; |
---|
| 937 | } |
---|
| 938 | default : |
---|
| 939 | { |
---|
| 940 | G4Exception("G4TwistedTubs::DistanceToOut(p)", "InvalidCondition", |
---|
| 941 | FatalException, "Unknown point location!"); |
---|
| 942 | } |
---|
| 943 | } // switch end |
---|
| 944 | |
---|
| 945 | return 0; |
---|
| 946 | } |
---|
| 947 | |
---|
| 948 | //===================================================================== |
---|
| 949 | //* StreamInfo -------------------------------------------------------- |
---|
| 950 | |
---|
| 951 | std::ostream& G4TwistedTubs::StreamInfo(std::ostream& os) const |
---|
| 952 | { |
---|
| 953 | // |
---|
| 954 | // Stream object contents to an output stream |
---|
| 955 | // |
---|
| 956 | os << "-----------------------------------------------------------\n" |
---|
| 957 | << " *** Dump for solid - " << GetName() << " ***\n" |
---|
| 958 | << " ===================================================\n" |
---|
| 959 | << " Solid type: G4TwistedTubs\n" |
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| 960 | << " Parameters: \n" |
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| 961 | << " -ve end Z : " << fEndZ[0]/mm << " mm \n" |
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| 962 | << " +ve end Z : " << fEndZ[1]/mm << " mm \n" |
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| 963 | << " inner end radius(-ve z): " << fEndInnerRadius[0]/mm << " mm \n" |
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| 964 | << " inner end radius(+ve z): " << fEndInnerRadius[1]/mm << " mm \n" |
---|
| 965 | << " outer end radius(-ve z): " << fEndOuterRadius[0]/mm << " mm \n" |
---|
| 966 | << " outer end radius(+ve z): " << fEndOuterRadius[1]/mm << " mm \n" |
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| 967 | << " inner radius (z=0) : " << fInnerRadius/mm << " mm \n" |
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| 968 | << " outer radius (z=0) : " << fOuterRadius/mm << " mm \n" |
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| 969 | << " twisted angle : " << fPhiTwist/degree << " degrees \n" |
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| 970 | << " inner stereo angle : " << fInnerStereo/degree << " degrees \n" |
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| 971 | << " outer stereo angle : " << fOuterStereo/degree << " degrees \n" |
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| 972 | << " phi-width of a piece : " << fDPhi/degree << " degrees \n" |
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| 973 | << "-----------------------------------------------------------\n"; |
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| 974 | |
---|
| 975 | return os; |
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| 976 | } |
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| 977 | |
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| 978 | |
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| 979 | //===================================================================== |
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| 980 | //* DiscribeYourselfTo ------------------------------------------------ |
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| 981 | |
---|
| 982 | void G4TwistedTubs::DescribeYourselfTo (G4VGraphicsScene& scene) const |
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| 983 | { |
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| 984 | scene.AddSolid (*this); |
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| 985 | } |
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| 986 | |
---|
| 987 | //===================================================================== |
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| 988 | //* GetExtent --------------------------------------------------------- |
---|
| 989 | |
---|
| 990 | G4VisExtent G4TwistedTubs::GetExtent() const |
---|
| 991 | { |
---|
| 992 | // Define the sides of the box into which the G4Tubs instance would fit. |
---|
| 993 | |
---|
| 994 | G4double maxEndOuterRad = (fEndOuterRadius[0] > fEndOuterRadius[1] ? 0 : 1); |
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| 995 | return G4VisExtent( -maxEndOuterRad, maxEndOuterRad, |
---|
| 996 | -maxEndOuterRad, maxEndOuterRad, |
---|
| 997 | -fZHalfLength, fZHalfLength ); |
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| 998 | } |
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| 999 | |
---|
| 1000 | //===================================================================== |
---|
| 1001 | //* CreatePolyhedron -------------------------------------------------- |
---|
| 1002 | |
---|
| 1003 | G4Polyhedron* G4TwistedTubs::CreatePolyhedron () const |
---|
| 1004 | { |
---|
| 1005 | // number of meshes |
---|
| 1006 | // |
---|
| 1007 | G4double dA = std::max(fDPhi,fPhiTwist); |
---|
| 1008 | const G4int m = |
---|
| 1009 | G4int(G4Polyhedron::GetNumberOfRotationSteps() * dA / twopi) + 2; |
---|
| 1010 | const G4int n = |
---|
| 1011 | G4int(G4Polyhedron::GetNumberOfRotationSteps() * fPhiTwist / twopi) + 2; |
---|
| 1012 | |
---|
| 1013 | const G4int nnodes = 4*(m-1)*(n-2) + 2*m*m ; |
---|
| 1014 | const G4int nfaces = 4*(m-1)*(n-1) + 2*(m-1)*(m-1) ; |
---|
| 1015 | |
---|
| 1016 | G4Polyhedron *ph=new G4Polyhedron; |
---|
| 1017 | typedef G4double G4double3[3]; |
---|
| 1018 | typedef G4int G4int4[4]; |
---|
| 1019 | G4double3* xyz = new G4double3[nnodes]; // number of nodes |
---|
| 1020 | G4int4* faces = new G4int4[nfaces] ; // number of faces |
---|
| 1021 | fLowerEndcap->GetFacets(m,m,xyz,faces,0) ; |
---|
| 1022 | fUpperEndcap->GetFacets(m,m,xyz,faces,1) ; |
---|
| 1023 | fInnerHype->GetFacets(m,n,xyz,faces,2) ; |
---|
| 1024 | fFormerTwisted->GetFacets(m,n,xyz,faces,3) ; |
---|
| 1025 | fOuterHype->GetFacets(m,n,xyz,faces,4) ; |
---|
| 1026 | fLatterTwisted->GetFacets(m,n,xyz,faces,5) ; |
---|
| 1027 | |
---|
| 1028 | ph->createPolyhedron(nnodes,nfaces,xyz,faces); |
---|
| 1029 | |
---|
| 1030 | delete[] xyz; |
---|
| 1031 | delete[] faces; |
---|
| 1032 | |
---|
| 1033 | return ph; |
---|
| 1034 | } |
---|
| 1035 | |
---|
| 1036 | //===================================================================== |
---|
| 1037 | //* CreateNUBS -------------------------------------------------------- |
---|
| 1038 | |
---|
| 1039 | G4NURBS* G4TwistedTubs::CreateNURBS () const |
---|
| 1040 | { |
---|
| 1041 | G4double maxEndOuterRad = (fEndOuterRadius[0] > fEndOuterRadius[1] ? 0 : 1); |
---|
| 1042 | G4double maxEndInnerRad = (fEndOuterRadius[0] > fEndOuterRadius[1] ? 0 : 1); |
---|
| 1043 | return new G4NURBStube(maxEndInnerRad, maxEndOuterRad, fZHalfLength); |
---|
| 1044 | // Tube for now!!! |
---|
| 1045 | } |
---|
| 1046 | |
---|
| 1047 | //===================================================================== |
---|
| 1048 | //* GetPolyhedron ----------------------------------------------------- |
---|
| 1049 | |
---|
| 1050 | G4Polyhedron* G4TwistedTubs::GetPolyhedron () const |
---|
| 1051 | { |
---|
| 1052 | if ((!fpPolyhedron) || |
---|
| 1053 | (fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() != |
---|
| 1054 | fpPolyhedron->GetNumberOfRotationSteps())) |
---|
| 1055 | { |
---|
| 1056 | delete fpPolyhedron; |
---|
| 1057 | fpPolyhedron = CreatePolyhedron(); |
---|
| 1058 | } |
---|
| 1059 | return fpPolyhedron; |
---|
| 1060 | } |
---|
| 1061 | |
---|
| 1062 | //===================================================================== |
---|
| 1063 | //* CreateSurfaces ---------------------------------------------------- |
---|
| 1064 | |
---|
| 1065 | void G4TwistedTubs::CreateSurfaces() |
---|
| 1066 | { |
---|
| 1067 | // create 6 surfaces of TwistedTub |
---|
| 1068 | |
---|
| 1069 | G4ThreeVector x0(0, 0, fEndZ[0]); |
---|
| 1070 | G4ThreeVector n (0, 0, -1); |
---|
| 1071 | |
---|
| 1072 | fLowerEndcap = new G4TwistTubsFlatSide("LowerEndcap", |
---|
| 1073 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1074 | fDPhi, fEndPhi, fEndZ, -1) ; |
---|
| 1075 | |
---|
| 1076 | fUpperEndcap = new G4TwistTubsFlatSide("UpperEndcap", |
---|
| 1077 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1078 | fDPhi, fEndPhi, fEndZ, 1) ; |
---|
| 1079 | |
---|
| 1080 | G4RotationMatrix rotHalfDPhi; |
---|
| 1081 | rotHalfDPhi.rotateZ(0.5*fDPhi); |
---|
| 1082 | |
---|
| 1083 | fLatterTwisted = new G4TwistTubsSide("LatterTwisted", |
---|
| 1084 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1085 | fDPhi, fEndPhi, fEndZ, |
---|
| 1086 | fInnerRadius, fOuterRadius, fKappa, |
---|
| 1087 | 1 ) ; |
---|
| 1088 | fFormerTwisted = new G4TwistTubsSide("FormerTwisted", |
---|
| 1089 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1090 | fDPhi, fEndPhi, fEndZ, |
---|
| 1091 | fInnerRadius, fOuterRadius, fKappa, |
---|
| 1092 | -1 ) ; |
---|
| 1093 | |
---|
| 1094 | fInnerHype = new G4TwistTubsHypeSide("InnerHype", |
---|
| 1095 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1096 | fDPhi, fEndPhi, fEndZ, |
---|
| 1097 | fInnerRadius, fOuterRadius,fKappa, |
---|
| 1098 | fTanInnerStereo, fTanOuterStereo, -1) ; |
---|
| 1099 | fOuterHype = new G4TwistTubsHypeSide("OuterHype", |
---|
| 1100 | fEndInnerRadius, fEndOuterRadius, |
---|
| 1101 | fDPhi, fEndPhi, fEndZ, |
---|
| 1102 | fInnerRadius, fOuterRadius,fKappa, |
---|
| 1103 | fTanInnerStereo, fTanOuterStereo, 1) ; |
---|
| 1104 | |
---|
| 1105 | |
---|
| 1106 | // set neighbour surfaces |
---|
| 1107 | // |
---|
| 1108 | fLowerEndcap->SetNeighbours(fInnerHype, fLatterTwisted, |
---|
| 1109 | fOuterHype, fFormerTwisted); |
---|
| 1110 | fUpperEndcap->SetNeighbours(fInnerHype, fLatterTwisted, |
---|
| 1111 | fOuterHype, fFormerTwisted); |
---|
| 1112 | fLatterTwisted->SetNeighbours(fInnerHype, fLowerEndcap, |
---|
| 1113 | fOuterHype, fUpperEndcap); |
---|
| 1114 | fFormerTwisted->SetNeighbours(fInnerHype, fLowerEndcap, |
---|
| 1115 | fOuterHype, fUpperEndcap); |
---|
| 1116 | fInnerHype->SetNeighbours(fLatterTwisted, fLowerEndcap, |
---|
| 1117 | fFormerTwisted, fUpperEndcap); |
---|
| 1118 | fOuterHype->SetNeighbours(fLatterTwisted, fLowerEndcap, |
---|
| 1119 | fFormerTwisted, fUpperEndcap); |
---|
| 1120 | } |
---|
| 1121 | |
---|
| 1122 | |
---|
| 1123 | //===================================================================== |
---|
| 1124 | //* GetEntityType ----------------------------------------------------- |
---|
| 1125 | |
---|
| 1126 | G4GeometryType G4TwistedTubs::GetEntityType() const |
---|
| 1127 | { |
---|
| 1128 | return G4String("G4TwistedTubs"); |
---|
| 1129 | } |
---|
| 1130 | |
---|
| 1131 | //===================================================================== |
---|
| 1132 | //* GetCubicVolume ---------------------------------------------------- |
---|
| 1133 | |
---|
| 1134 | G4double G4TwistedTubs::GetCubicVolume() |
---|
| 1135 | { |
---|
| 1136 | if(fCubicVolume != 0.) {;} |
---|
| 1137 | else { fCubicVolume = fDPhi*fZHalfLength*(fOuterRadius*fOuterRadius |
---|
| 1138 | -fInnerRadius*fInnerRadius); } |
---|
| 1139 | return fCubicVolume; |
---|
| 1140 | } |
---|
| 1141 | |
---|
| 1142 | //===================================================================== |
---|
| 1143 | //* GetSurfaceArea ---------------------------------------------------- |
---|
| 1144 | |
---|
| 1145 | G4double G4TwistedTubs::GetSurfaceArea() |
---|
| 1146 | { |
---|
| 1147 | if(fSurfaceArea != 0.) {;} |
---|
| 1148 | else { fSurfaceArea = G4VSolid::GetSurfaceArea(); } |
---|
| 1149 | return fSurfaceArea; |
---|
| 1150 | } |
---|
| 1151 | |
---|
| 1152 | //===================================================================== |
---|
| 1153 | //* GetPointOnSurface ------------------------------------------------- |
---|
| 1154 | |
---|
| 1155 | G4ThreeVector G4TwistedTubs::GetPointOnSurface() const |
---|
| 1156 | { |
---|
| 1157 | |
---|
| 1158 | G4double z = CLHEP::RandFlat::shoot(fEndZ[0],fEndZ[1]); |
---|
| 1159 | G4double phi , phimin, phimax ; |
---|
| 1160 | G4double x , xmin, xmax ; |
---|
| 1161 | G4double r , rmin, rmax ; |
---|
| 1162 | |
---|
| 1163 | G4double a1 = fOuterHype->GetSurfaceArea() ; |
---|
| 1164 | G4double a2 = fInnerHype->GetSurfaceArea() ; |
---|
| 1165 | G4double a3 = fLatterTwisted->GetSurfaceArea() ; |
---|
| 1166 | G4double a4 = fFormerTwisted->GetSurfaceArea() ; |
---|
| 1167 | G4double a5 = fLowerEndcap->GetSurfaceArea() ; |
---|
| 1168 | G4double a6 = fUpperEndcap->GetSurfaceArea() ; |
---|
| 1169 | |
---|
| 1170 | G4double chose = CLHEP::RandFlat::shoot(0.,a1 + a2 + a3 + a4 + a5 + a6) ; |
---|
| 1171 | |
---|
| 1172 | if(chose < a1) |
---|
| 1173 | { |
---|
| 1174 | |
---|
| 1175 | phimin = fOuterHype->GetBoundaryMin(z) ; |
---|
| 1176 | phimax = fOuterHype->GetBoundaryMax(z) ; |
---|
| 1177 | phi = CLHEP::RandFlat::shoot(phimin,phimax) ; |
---|
| 1178 | |
---|
| 1179 | return fOuterHype->SurfacePoint(phi,z,true) ; |
---|
| 1180 | |
---|
| 1181 | } |
---|
| 1182 | else if ( (chose >= a1) && (chose < a1 + a2 ) ) |
---|
| 1183 | { |
---|
| 1184 | |
---|
| 1185 | phimin = fInnerHype->GetBoundaryMin(z) ; |
---|
| 1186 | phimax = fInnerHype->GetBoundaryMax(z) ; |
---|
| 1187 | phi = CLHEP::RandFlat::shoot(phimin,phimax) ; |
---|
| 1188 | |
---|
| 1189 | return fInnerHype->SurfacePoint(phi,z,true) ; |
---|
| 1190 | |
---|
| 1191 | } |
---|
| 1192 | else if ( (chose >= a1 + a2 ) && (chose < a1 + a2 + a3 ) ) |
---|
| 1193 | { |
---|
| 1194 | |
---|
| 1195 | xmin = fLatterTwisted->GetBoundaryMin(z) ; |
---|
| 1196 | xmax = fLatterTwisted->GetBoundaryMax(z) ; |
---|
| 1197 | x = CLHEP::RandFlat::shoot(xmin,xmax) ; |
---|
| 1198 | |
---|
| 1199 | return fLatterTwisted->SurfacePoint(x,z,true) ; |
---|
| 1200 | |
---|
| 1201 | } |
---|
| 1202 | else if ( (chose >= a1 + a2 + a3 ) && (chose < a1 + a2 + a3 + a4 ) ) |
---|
| 1203 | { |
---|
| 1204 | |
---|
| 1205 | xmin = fFormerTwisted->GetBoundaryMin(z) ; |
---|
| 1206 | xmax = fFormerTwisted->GetBoundaryMax(z) ; |
---|
| 1207 | x = CLHEP::RandFlat::shoot(xmin,xmax) ; |
---|
| 1208 | |
---|
| 1209 | return fFormerTwisted->SurfacePoint(x,z,true) ; |
---|
| 1210 | |
---|
| 1211 | } |
---|
| 1212 | else if( (chose >= a1 + a2 + a3 + a4 )&&(chose < a1 + a2 + a3 + a4 + a5 ) ) |
---|
| 1213 | { |
---|
| 1214 | |
---|
| 1215 | rmin = GetEndInnerRadius(0) ; |
---|
| 1216 | rmax = GetEndOuterRadius(0) ; |
---|
| 1217 | r = CLHEP::RandFlat::shoot(rmin,rmax) ; |
---|
| 1218 | |
---|
| 1219 | phimin = fLowerEndcap->GetBoundaryMin(r) ; |
---|
| 1220 | phimax = fLowerEndcap->GetBoundaryMax(r) ; |
---|
| 1221 | phi = CLHEP::RandFlat::shoot(phimin,phimax) ; |
---|
| 1222 | |
---|
| 1223 | return fLowerEndcap->SurfacePoint(phi,r,true) ; |
---|
| 1224 | |
---|
| 1225 | } |
---|
| 1226 | else |
---|
| 1227 | { |
---|
| 1228 | rmin = GetEndInnerRadius(1) ; |
---|
| 1229 | rmax = GetEndOuterRadius(1) ; |
---|
| 1230 | r = CLHEP::RandFlat::shoot(rmin,rmax) ; |
---|
| 1231 | |
---|
| 1232 | phimin = fUpperEndcap->GetBoundaryMin(r) ; |
---|
| 1233 | phimax = fUpperEndcap->GetBoundaryMax(r) ; |
---|
| 1234 | phi = CLHEP::RandFlat::shoot(phimin,phimax) ; |
---|
| 1235 | |
---|
| 1236 | return fUpperEndcap->SurfacePoint(phi,r,true) ; |
---|
| 1237 | } |
---|
| 1238 | } |
---|