[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: G4TwistTubsSide.hh,v 1.5 2006/06/29 18:47:58 gunter Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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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 | // G4TwistTubsSide |
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| 36 | // |
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| 37 | // Class description: |
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| 38 | // |
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| 39 | // Class describing a twisted boundary surface for a cylinder. |
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| 40 | |
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| 41 | // Author: |
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| 42 | // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) |
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| 43 | // |
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| 44 | // History: |
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| 45 | // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 |
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| 46 | // from original version in Jupiter-2.5.02 application. |
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| 47 | // -------------------------------------------------------------------- |
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| 48 | #ifndef __G4TWISTTUBSSIDE__ |
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| 49 | #define __G4TWISTTUBSSIDE__ |
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| 50 | |
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| 51 | #include "G4VTwistSurface.hh" |
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| 52 | |
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| 53 | class G4TwistTubsSide : public G4VTwistSurface |
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| 54 | { |
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| 55 | public: // with description |
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| 56 | |
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| 57 | G4TwistTubsSide(const G4String &name, |
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| 58 | const G4RotationMatrix &rot, // 0.5*(phi-width segment) |
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| 59 | const G4ThreeVector &tlate, |
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| 60 | G4int handedness, // R-hand = 1, L-hand = -1 |
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| 61 | const G4double kappa, // tan(TwistAngle/2)/fZHalfLen |
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| 62 | const EAxis axis0 = kXAxis, |
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| 63 | const EAxis axis1 = kZAxis, |
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| 64 | G4double axis0min = -kInfinity, |
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| 65 | G4double axis1min = -kInfinity, |
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| 66 | G4double axis0max = kInfinity, |
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| 67 | G4double axis1max = kInfinity ); |
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| 68 | |
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| 69 | G4TwistTubsSide(const G4String &name, |
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| 70 | G4double EndInnerRadius[2], |
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| 71 | G4double EndOuterRadius[2], |
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| 72 | G4double DPhi, |
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| 73 | G4double EndPhi[2], |
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| 74 | G4double EndZ[2], |
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| 75 | G4double InnerRadius, |
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| 76 | G4double OuterRadius, |
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| 77 | G4double Kappa, |
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| 78 | G4int handedness); |
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| 79 | |
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| 80 | virtual ~G4TwistTubsSide(); |
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| 81 | |
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| 82 | virtual G4ThreeVector GetNormal(const G4ThreeVector &xx, |
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| 83 | G4bool isGlobal = false) ; |
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| 84 | |
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| 85 | virtual G4int DistanceToSurface(const G4ThreeVector &gp, |
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| 86 | const G4ThreeVector &gv, |
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| 87 | G4ThreeVector gxx[], |
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| 88 | G4double distance[], |
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| 89 | G4int areacode[], |
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| 90 | G4bool isvalid[], |
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| 91 | EValidate validate = kValidateWithTol); |
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| 92 | |
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| 93 | virtual G4int DistanceToSurface(const G4ThreeVector &gp, |
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| 94 | G4ThreeVector gxx[], |
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| 95 | G4double distance[], |
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| 96 | G4int areacode[]); |
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| 97 | |
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| 98 | inline G4ThreeVector ProjectAtPXPZ(const G4ThreeVector &p, |
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| 99 | G4bool isglobal = false) const ; |
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| 100 | |
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| 101 | virtual G4ThreeVector SurfacePoint(G4double, G4double, |
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| 102 | G4bool isGlobal = false) ; |
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| 103 | virtual G4double GetBoundaryMin(G4double phi) ; |
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| 104 | virtual G4double GetBoundaryMax(G4double phi) ; |
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| 105 | virtual G4double GetSurfaceArea() ; |
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| 106 | virtual void GetFacets( G4int m, G4int n, G4double xyz[][3], |
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| 107 | G4int faces[][4], G4int iside ) ; |
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| 108 | |
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| 109 | public: // without description |
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| 110 | |
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| 111 | G4TwistTubsSide(__void__&); |
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| 112 | // Fake default constructor for usage restricted to direct object |
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| 113 | // persistency for clients requiring preallocation of memory for |
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| 114 | // persistifiable objects. |
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| 115 | |
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| 116 | private: |
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| 117 | |
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| 118 | virtual G4double DistanceToPlane(const G4ThreeVector &p, |
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| 119 | const G4ThreeVector &A, |
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| 120 | const G4ThreeVector &B, |
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| 121 | const G4ThreeVector &C, |
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| 122 | const G4ThreeVector &D, |
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| 123 | const G4int parity, |
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| 124 | G4ThreeVector &xx, |
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| 125 | G4ThreeVector &n); |
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| 126 | |
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| 127 | virtual G4int GetAreaCode(const G4ThreeVector &xx, |
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| 128 | G4bool withTol = true); |
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| 129 | |
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| 130 | virtual void SetCorners(); |
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| 131 | |
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| 132 | virtual void SetCorners( G4double endInnerRad[2], |
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| 133 | G4double endOuterRad[2], |
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| 134 | G4double endPhi[2], |
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| 135 | G4double endZ[2] ) ; |
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| 136 | |
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| 137 | virtual void SetBoundaries(); |
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| 138 | |
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| 139 | private: |
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| 140 | |
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| 141 | G4double fKappa; // std::tan(TwistedAngle/2)/HalfLenZ; |
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| 142 | }; |
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| 143 | |
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| 144 | |
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| 145 | //======================================================== |
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| 146 | // inline functions |
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| 147 | //======================================================== |
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| 148 | |
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| 149 | inline |
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| 150 | G4ThreeVector G4TwistTubsSide::ProjectAtPXPZ(const G4ThreeVector &p, |
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| 151 | G4bool isglobal) const |
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| 152 | { |
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| 153 | // Get Rho at p.z() on Hyperbolic Surface. |
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| 154 | G4ThreeVector tmpp; |
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| 155 | if (isglobal) { |
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| 156 | tmpp = fRot.inverse()*p - fTrans; |
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| 157 | } else { |
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| 158 | tmpp = p; |
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| 159 | } |
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| 160 | G4ThreeVector xx(p.x(), p.x() * fKappa * p.z(), p.z()); |
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| 161 | if (isglobal) { return (fRot * xx + fTrans); } |
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| 162 | return xx; |
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| 163 | } |
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| 164 | |
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| 165 | inline |
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| 166 | G4ThreeVector |
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| 167 | G4TwistTubsSide::SurfacePoint(G4double x, G4double z, G4bool isGlobal) |
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| 168 | { |
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| 169 | G4ThreeVector SurfPoint( x , x * fKappa * z , z ) ; |
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| 170 | |
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| 171 | if (isGlobal) { return (fRot * SurfPoint + fTrans); } |
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| 172 | return SurfPoint; |
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| 173 | } |
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| 174 | |
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| 175 | inline |
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| 176 | G4double G4TwistTubsSide::GetBoundaryMin(G4double) |
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| 177 | { |
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| 178 | return fAxisMin[0] ; // inner radius at z = 0 |
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| 179 | } |
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| 180 | |
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| 181 | inline |
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| 182 | G4double G4TwistTubsSide::GetBoundaryMax(G4double) |
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| 183 | { |
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| 184 | return fAxisMax[0] ; // outer radius at z = 0 |
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| 185 | } |
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| 186 | |
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| 187 | inline |
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| 188 | G4double G4TwistTubsSide::GetSurfaceArea() |
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| 189 | { |
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| 190 | // approximation only |
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| 191 | return ( fAxisMax[0] - fAxisMin[0] ) * ( fAxisMax[1] - fAxisMin[1] ) ; |
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| 192 | } |
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| 193 | |
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| 194 | #endif |
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