[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.hh,v 1.14 2007/05/23 09:32:35 gcosmo Exp $ |
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[1337] | 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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[831] | 29 | // |
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| 30 | // |
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| 31 | // -------------------------------------------------------------------- |
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| 32 | // GEANT 4 class header file |
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| 33 | // |
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| 34 | // |
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| 35 | // G4TwistedTubs |
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| 36 | // |
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| 37 | // Class description: |
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| 38 | // |
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| 39 | // G4TwistedTubs is a sort of twisted cylinder. |
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| 40 | // A twisted cylinder which is placed along with z-axis and is |
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| 41 | // separated into phi-segments should become a hyperboloid, and |
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| 42 | // its each segmented piece should be tilted with a stereo angle. |
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| 43 | // G4TwistedTubs is a G4VSolid. |
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| 44 | // It can have inner & outer surfaces as well as G4TwistedTubs, |
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| 45 | // but cannot has different stereo angles between the inner surface |
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| 46 | // and outer surface. |
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| 47 | |
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| 48 | // Author: |
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| 49 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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| 50 | // |
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| 51 | // History: |
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| 52 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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| 53 | // from original version in Jupiter-2.5.02 application. |
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| 54 | // -------------------------------------------------------------------- |
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| 55 | #ifndef __G4TWISTEDTUBS__ |
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| 56 | #define __G4TWISTEDTUBS__ |
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| 57 | |
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| 58 | #include "G4VSolid.hh" |
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| 59 | #include "G4TwistTubsFlatSide.hh" |
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| 60 | #include "G4TwistTubsSide.hh" |
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| 61 | #include "G4TwistTubsHypeSide.hh" |
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| 62 | |
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| 63 | class G4SolidExtentList; |
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| 64 | class G4ClippablePolygon; |
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| 65 | |
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| 66 | class G4TwistedTubs : public G4VSolid |
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| 67 | { |
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| 68 | public: // with description |
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| 69 | |
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| 70 | G4TwistedTubs(const G4String &pname, // Name of instance |
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| 71 | G4double twistedangle, // Twisted angle |
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| 72 | G4double endinnerrad, // Inner radius at endcap |
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| 73 | G4double endouterrad, // Outer radius at endcap |
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| 74 | G4double halfzlen, // half z length |
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| 75 | G4double dphi); // Phi angle of a segment |
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| 76 | |
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| 77 | G4TwistedTubs(const G4String &pname, // Name of instance |
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| 78 | G4double twistedangle, // Stereo angle |
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| 79 | G4double endinnerrad, // Inner radius at endcap |
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| 80 | G4double endouterrad, // Outer radius at endcap |
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| 81 | G4double halfzlen, // half z length |
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| 82 | G4int nseg, // Number of segments in totalPhi |
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| 83 | G4double totphi); // Total angle of all segments |
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| 84 | |
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| 85 | G4TwistedTubs(const G4String &pname, // Name of instance |
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| 86 | G4double twistedangle, // Twisted angle |
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| 87 | G4double innerrad, // Inner radius at z=0 |
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| 88 | G4double outerrad, // Outer radius at z=0 |
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| 89 | G4double negativeEndz, // -ve z endplate |
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| 90 | G4double positiveEndz, // +ve z endplate |
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| 91 | G4double dphi); // Phi angle of a segment |
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| 92 | |
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| 93 | G4TwistedTubs(const G4String &pname, // Name of instance |
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| 94 | G4double twistedangle, // Stereo angle |
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| 95 | G4double innerrad, // Inner radius at z=0 |
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| 96 | G4double outerrad, // Outer radius at z=0 |
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| 97 | G4double negativeEndz, // -ve z endplate |
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| 98 | G4double positiveEndz, // +ve z endplate |
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| 99 | G4int nseg, // Number of segments in totalPhi |
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| 100 | G4double totphi); // Total angle of all segments |
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| 101 | |
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| 102 | virtual ~G4TwistedTubs(); |
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| 103 | |
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| 104 | void ComputeDimensions(G4VPVParameterisation * /* p */ , |
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| 105 | const G4int /* n */ , |
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| 106 | const G4VPhysicalVolume * /* prep */ ); |
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| 107 | |
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| 108 | G4bool CalculateExtent(const EAxis paxis, |
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| 109 | const G4VoxelLimits &pvoxellimit, |
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| 110 | const G4AffineTransform &ptransform, |
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| 111 | G4double &pmin, |
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| 112 | G4double &pmax ) const; |
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| 113 | |
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| 114 | G4double DistanceToIn (const G4ThreeVector &p, |
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| 115 | const G4ThreeVector &v ) const; |
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| 116 | |
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| 117 | G4double DistanceToIn (const G4ThreeVector &p ) const; |
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| 118 | |
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| 119 | G4double DistanceToOut(const G4ThreeVector &p, |
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| 120 | const G4ThreeVector &v, |
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| 121 | const G4bool calcnorm=G4bool(false), |
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| 122 | G4bool *validnorm=0, |
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| 123 | G4ThreeVector *n=0 ) const; |
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| 124 | |
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| 125 | G4double DistanceToOut(const G4ThreeVector &p) const; |
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| 126 | |
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| 127 | EInside Inside (const G4ThreeVector &p) const; |
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| 128 | |
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| 129 | G4ThreeVector SurfaceNormal(const G4ThreeVector &p) const; |
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| 130 | |
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| 131 | void DescribeYourselfTo (G4VGraphicsScene &scene) const; |
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| 132 | G4Polyhedron *CreatePolyhedron () const; |
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| 133 | G4NURBS *CreateNURBS () const; |
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| 134 | G4Polyhedron *GetPolyhedron () const; |
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| 135 | |
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| 136 | std::ostream &StreamInfo(std::ostream& os) const; |
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| 137 | |
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| 138 | // accessors |
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| 139 | |
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| 140 | inline G4double GetDPhi () const { return fDPhi ; } |
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| 141 | inline G4double GetPhiTwist () const { return fPhiTwist ; } |
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| 142 | inline G4double GetInnerRadius () const { return fInnerRadius; } |
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| 143 | inline G4double GetOuterRadius () const { return fOuterRadius; } |
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| 144 | inline G4double GetInnerStereo () const { return fInnerStereo; } |
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| 145 | inline G4double GetOuterStereo () const { return fOuterStereo; } |
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| 146 | inline G4double GetZHalfLength () const { return fZHalfLength; } |
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| 147 | inline G4double GetKappa () const { return fKappa ; } |
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| 148 | |
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| 149 | inline G4double GetTanInnerStereo () const { return fTanInnerStereo ; } |
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| 150 | inline G4double GetTanInnerStereo2() const { return fTanInnerStereo2 ; } |
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| 151 | inline G4double GetTanOuterStereo () const { return fTanOuterStereo ; } |
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| 152 | inline G4double GetTanOuterStereo2() const { return fTanOuterStereo2 ; } |
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| 153 | |
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| 154 | inline G4double GetEndZ (G4int i) const { return fEndZ[i] ; } |
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| 155 | inline G4double GetEndPhi (G4int i) const { return fEndPhi[i]; } |
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| 156 | inline G4double GetEndInnerRadius (G4int i) const |
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| 157 | { return fEndInnerRadius[i]; } |
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| 158 | inline G4double GetEndOuterRadius (G4int i) const |
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| 159 | { return fEndOuterRadius[i]; } |
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| 160 | inline G4double GetEndInnerRadius () const |
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| 161 | { return (fEndInnerRadius[0] > fEndInnerRadius[1] ? |
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| 162 | fEndInnerRadius[0] : fEndInnerRadius[1]); } |
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| 163 | inline G4double GetEndOuterRadius () const |
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| 164 | { return (fEndOuterRadius[0] > fEndOuterRadius[1] ? |
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| 165 | fEndOuterRadius[0] : fEndOuterRadius[1]); } |
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| 166 | |
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| 167 | G4VisExtent GetExtent () const; |
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| 168 | G4GeometryType GetEntityType() const; |
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| 169 | |
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| 170 | G4double GetCubicVolume(); |
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| 171 | // Returns an estimation of the geometrical cubic volume of the |
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| 172 | // solid. Caches the computed value once computed the first time. |
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| 173 | G4double GetSurfaceArea(); |
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| 174 | // Returns an estimation of the geometrical surface area of the |
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| 175 | // solid. Caches the computed value once computed the first time. |
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| 176 | |
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| 177 | G4ThreeVector GetPointOnSurface() const ; |
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| 178 | |
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| 179 | public: // without description |
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| 180 | |
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| 181 | G4TwistedTubs(__void__&); |
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| 182 | // Fake default constructor for usage restricted to direct object |
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| 183 | // persistency for clients requiring preallocation of memory for |
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| 184 | // persistifiable objects. |
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| 185 | |
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| 186 | #ifdef G4TWISTDEBUG |
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| 187 | G4VTwistSurface * GetOuterHype() const { return fOuterHype; } |
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| 188 | #endif |
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| 189 | |
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| 190 | private: |
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| 191 | |
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| 192 | inline void SetFields(G4double phitwist, G4double innerrad, |
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| 193 | G4double outerrad, |
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| 194 | G4double negativeEndz, G4double positiveEndz); |
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| 195 | |
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| 196 | void CreateSurfaces(); |
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| 197 | |
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| 198 | static void AddPolyToExtent( const G4ThreeVector &v0, |
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| 199 | const G4ThreeVector &v1, |
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| 200 | const G4ThreeVector &w1, |
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| 201 | const G4ThreeVector &w0, |
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| 202 | const G4VoxelLimits &voxellimit, |
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| 203 | const EAxis axis, |
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| 204 | G4SolidExtentList &extentlist ); |
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| 205 | private: |
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| 206 | |
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| 207 | G4double fPhiTwist; // Twist angle from -fZHalfLength to fZHalfLength |
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| 208 | G4double fInnerRadius; // Inner-hype radius at z=0 |
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| 209 | G4double fOuterRadius; // Outer-hype radius at z=0 |
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| 210 | G4double fEndZ[2]; // z at endcaps, [0] = -ve z, [1] = +ve z |
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| 211 | G4double fDPhi; // Phi-width of a segment fDPhi > 0 |
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| 212 | G4double fZHalfLength; // Half length along z-axis |
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| 213 | |
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| 214 | G4double fInnerStereo; // Inner-hype stereo angle |
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| 215 | G4double fOuterStereo; // Outer-hype stereo angle |
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| 216 | G4double fTanInnerStereo; // std::tan(innerStereoAngle) |
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| 217 | G4double fTanOuterStereo; // std::tan(outerStereoAngle) |
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| 218 | G4double fKappa; // std::tan(fPhiTwist/2)/fZHalfLen; |
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| 219 | G4double fEndInnerRadius[2]; // Inner-hype radii endcaps [0] -ve z, [1] +ve z |
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| 220 | G4double fEndOuterRadius[2]; // Outer-hype radii endcaps [0] -ve z, [1] +ve z |
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| 221 | G4double fEndPhi[2]; // Phi endcaps, [0] = -ve z, [1] = +ve z |
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| 222 | |
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| 223 | G4double fInnerRadius2; // fInnerRadius * fInnerRadius |
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| 224 | G4double fOuterRadius2; // fOuterRadius * fOuterRadius |
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| 225 | G4double fTanInnerStereo2; // fInnerRadius * fInnerRadius |
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| 226 | G4double fTanOuterStereo2; // fInnerRadius * fInnerRadius |
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| 227 | G4double fEndZ2[2]; // fEndZ * fEndZ |
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| 228 | |
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| 229 | G4VTwistSurface *fLowerEndcap; // Surface of -ve z |
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| 230 | G4VTwistSurface *fUpperEndcap; // Surface of +ve z |
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| 231 | G4VTwistSurface *fLatterTwisted; // Surface of -ve phi |
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| 232 | G4VTwistSurface *fFormerTwisted; // Surface of +ve phi |
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| 233 | G4VTwistSurface *fInnerHype; // Surface of -ve r |
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| 234 | G4VTwistSurface *fOuterHype; // Surface of +ve r |
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| 235 | |
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| 236 | G4double fCubicVolume; // Cached value for cubic volume |
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| 237 | G4double fSurfaceArea; // Cached value for surface area |
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| 238 | |
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| 239 | mutable G4Polyhedron* fpPolyhedron; // pointer to polyhedron for vis |
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| 240 | |
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| 241 | class LastState // last Inside result |
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| 242 | { |
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| 243 | public: |
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| 244 | LastState() |
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| 245 | { |
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| 246 | p.set(kInfinity,kInfinity,kInfinity); |
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| 247 | inside = kOutside; |
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| 248 | } |
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| 249 | ~LastState(){} |
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| 250 | public: |
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| 251 | G4ThreeVector p; |
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| 252 | EInside inside; |
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| 253 | }; |
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| 254 | |
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| 255 | class LastVector // last SurfaceNormal result |
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| 256 | { |
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| 257 | public: |
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| 258 | LastVector() |
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| 259 | { |
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| 260 | p.set(kInfinity,kInfinity,kInfinity); |
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| 261 | vec.set(kInfinity,kInfinity,kInfinity); |
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| 262 | surface = new G4VTwistSurface*[1]; |
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| 263 | } |
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| 264 | ~LastVector() |
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| 265 | { |
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| 266 | delete [] surface; |
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| 267 | } |
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| 268 | public: |
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| 269 | G4ThreeVector p; |
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| 270 | G4ThreeVector vec; |
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| 271 | G4VTwistSurface **surface; |
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| 272 | }; |
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| 273 | |
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| 274 | class LastValue // last G4double value |
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| 275 | { |
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| 276 | public: |
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| 277 | LastValue() |
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| 278 | { |
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| 279 | p.set(kInfinity,kInfinity,kInfinity); |
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| 280 | value = DBL_MAX; |
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| 281 | } |
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| 282 | ~LastValue(){} |
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| 283 | public: |
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| 284 | G4ThreeVector p; |
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| 285 | G4double value; |
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| 286 | }; |
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| 287 | |
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| 288 | class LastValueWithDoubleVector // last G4double value |
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| 289 | { |
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| 290 | public: |
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| 291 | LastValueWithDoubleVector() |
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| 292 | { |
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| 293 | p.set(kInfinity,kInfinity,kInfinity); |
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| 294 | vec.set(kInfinity,kInfinity,kInfinity); |
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| 295 | value = DBL_MAX; |
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| 296 | } |
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| 297 | ~LastValueWithDoubleVector(){} |
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| 298 | public: |
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| 299 | G4ThreeVector p; |
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| 300 | G4ThreeVector vec; |
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| 301 | G4double value; |
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| 302 | }; |
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| 303 | |
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| 304 | LastState fLastInside; |
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| 305 | LastVector fLastNormal; |
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| 306 | LastValue fLastDistanceToIn; |
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| 307 | LastValue fLastDistanceToOut; |
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| 308 | LastValueWithDoubleVector fLastDistanceToInWithV; |
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| 309 | LastValueWithDoubleVector fLastDistanceToOutWithV; |
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| 310 | |
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| 311 | }; |
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| 312 | |
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| 313 | //===================================================================== |
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| 314 | |
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| 315 | //--------------------- |
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| 316 | // inline functions |
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| 317 | //--------------------- |
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| 318 | |
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| 319 | inline |
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| 320 | void G4TwistedTubs::SetFields(G4double phitwist, G4double innerrad, |
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| 321 | G4double outerrad, G4double negativeEndz, |
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| 322 | G4double positiveEndz) |
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| 323 | { |
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| 324 | fCubicVolume = 0.; |
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| 325 | fPhiTwist = phitwist; |
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| 326 | fEndZ[0] = negativeEndz; |
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| 327 | fEndZ[1] = positiveEndz; |
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| 328 | fEndZ2[0] = fEndZ[0] * fEndZ[0]; |
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| 329 | fEndZ2[1] = fEndZ[1] * fEndZ[1]; |
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| 330 | fInnerRadius = innerrad; |
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| 331 | fOuterRadius = outerrad; |
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| 332 | fInnerRadius2 = fInnerRadius * fInnerRadius; |
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| 333 | fOuterRadius2 = fOuterRadius * fOuterRadius; |
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| 334 | |
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| 335 | G4int maxi; |
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| 336 | if (std::fabs(fEndZ[0]) >= std::fabs(fEndZ[1])) { |
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| 337 | fZHalfLength = std::fabs(fEndZ[0]); |
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| 338 | maxi = 0; |
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| 339 | } else { |
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| 340 | fZHalfLength = std::fabs(fEndZ[1]); |
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| 341 | maxi = 1; |
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| 342 | } |
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| 343 | |
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| 344 | G4double parity = (fPhiTwist > 0 ? 1 : -1); |
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| 345 | G4double tanHalfTwist = std::tan(0.5 * fPhiTwist); |
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| 346 | G4double innerNumerator = std::fabs(fInnerRadius * tanHalfTwist) * parity; |
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| 347 | G4double outerNumerator = std::fabs(fOuterRadius * tanHalfTwist) * parity; |
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| 348 | |
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| 349 | fTanInnerStereo = innerNumerator / fZHalfLength; |
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| 350 | fTanOuterStereo = outerNumerator / fZHalfLength; |
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| 351 | fTanInnerStereo2 = fTanInnerStereo * fTanInnerStereo; |
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| 352 | fTanOuterStereo2 = fTanOuterStereo * fTanOuterStereo; |
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| 353 | fInnerStereo = std::atan2(innerNumerator, fZHalfLength); |
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| 354 | fOuterStereo = std::atan2(outerNumerator, fZHalfLength); |
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| 355 | fEndInnerRadius[0] = std::sqrt(fInnerRadius2 + fEndZ2[0] * fTanInnerStereo2); |
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| 356 | fEndInnerRadius[1] = std::sqrt(fInnerRadius2 + fEndZ2[1] * fTanInnerStereo2); |
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| 357 | fEndOuterRadius[0] = std::sqrt(fOuterRadius2 + fEndZ2[0] * fTanOuterStereo2); |
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| 358 | fEndOuterRadius[1] = std::sqrt(fOuterRadius2 + fEndZ2[1] * fTanOuterStereo2); |
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| 359 | |
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| 360 | fKappa = tanHalfTwist / fZHalfLength; |
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| 361 | fEndPhi[0] = std::atan2(fEndZ[0] * tanHalfTwist, fZHalfLength); |
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| 362 | fEndPhi[1] = std::atan2(fEndZ[1] * tanHalfTwist, fZHalfLength); |
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| 363 | |
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| 364 | #ifdef G4TWISTDEBUG |
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| 365 | G4cout << "/********* G4TwistedTubs::SetFields() Field Parameters ***************** " << G4endl; |
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| 366 | G4cout << "/* fPhiTwist : " << fPhiTwist << G4endl; |
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| 367 | G4cout << "/* fEndZ(0, 1) : " << fEndZ[0] << " , " << fEndZ[1] << G4endl; |
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| 368 | G4cout << "/* fEndPhi(0, 1) : " << fEndPhi[0] << " , " << fEndPhi[1] << G4endl; |
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| 369 | G4cout << "/* fInnerRadius, fOuterRadius : " << fInnerRadius << " , " << fOuterRadius << G4endl; |
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| 370 | G4cout << "/* fEndInnerRadius(0, 1) : " << fEndInnerRadius[0] << " , " |
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| 371 | << fEndInnerRadius[1] << G4endl; |
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| 372 | G4cout << "/* fEndOuterRadius(0, 1) : " << fEndOuterRadius[0] << " , " |
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| 373 | << fEndOuterRadius[1] << G4endl; |
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| 374 | G4cout << "/* fInnerStereo, fOuterStereo : " << fInnerStereo << " , " << fOuterStereo << G4endl; |
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| 375 | G4cout << "/* tanHalfTwist, fKappa : " << tanHalfTwist << " , " << fKappa << G4endl; |
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| 376 | G4cout << "/*********************************************************************** " << G4endl; |
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| 377 | #endif |
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| 378 | } |
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| 379 | |
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| 380 | #endif |
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