| 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: G4TwistTrapFlatSide.hh,v 1.5 2006/06/29 18:47:48 gunter Exp $
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| 28 | // GEANT4 tag $Name: HEAD $
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| 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 | // G4FlatTrapSurface
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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 flat boundary surface for a trapezoid.
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| 40 |
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| 41 | // Author:
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| 42 | //
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| 43 | // 27-Oct-2004 - O.Link (Oliver.Link@cern.ch)
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| 44 | //
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| 45 | // --------------------------------------------------------------------
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| 46 | #ifndef __G4TWISTTRAPFLATSIDE__
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| 47 | #define __G4TWISTTRAPFLATSIDE__
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| 48 |
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| 49 | #include "G4VTwistSurface.hh"
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| 50 |
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| 51 | class G4TwistTrapFlatSide : public G4VTwistSurface
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| 52 | {
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| 53 | public: // with description
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| 54 |
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| 55 | G4TwistTrapFlatSide( const G4String& name,
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| 56 | G4double PhiTwist,
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| 57 | G4double pDx1,
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| 58 | G4double pDx2,
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| 59 | G4double pDy,
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| 60 | G4double pDz,
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| 61 | G4double pAlpha,
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| 62 | G4double pPhi,
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| 63 | G4double pTheta,
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| 64 | G4int handedness );
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| 65 | virtual ~G4TwistTrapFlatSide();
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| 66 |
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| 67 | virtual G4ThreeVector GetNormal(const G4ThreeVector & /* xx */ ,
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| 68 | G4bool isGlobal = false);
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| 69 | virtual G4int DistanceToSurface(const G4ThreeVector &gp,
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| 70 | const G4ThreeVector &gv,
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| 71 | G4ThreeVector gxx[],
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| 72 | G4double distance[],
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| 73 | G4int areacode[],
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| 74 | G4bool isvalid[],
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| 75 | EValidate validate = kValidateWithTol);
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| 76 |
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| 77 | virtual G4int DistanceToSurface(const G4ThreeVector &gp,
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| 78 | G4ThreeVector gxx[],
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| 79 | G4double distance[],
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| 80 | G4int areacode[]);
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| 81 |
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| 82 |
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| 83 | virtual G4ThreeVector SurfacePoint(G4double x, G4double y,
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| 84 | G4bool isGlobal = false);
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| 85 | virtual G4double GetBoundaryMin(G4double u);
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| 86 | virtual G4double GetBoundaryMax(G4double u);
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| 87 | virtual G4double GetSurfaceArea();
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| 88 | virtual void GetFacets( G4int m, G4int n, G4double xyz[][3],
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| 89 | G4int faces[][4], G4int iside );
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| 90 |
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| 91 | public: // without description
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| 92 |
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| 93 | G4TwistTrapFlatSide(__void__&);
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| 94 | // Fake default constructor for usage restricted to direct object
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| 95 | // persistency for clients requiring preallocation of memory for
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| 96 | // persistifiable objects.
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| 97 |
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| 98 | protected: // with description
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| 99 |
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| 100 | virtual G4int GetAreaCode(const G4ThreeVector &xx,
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| 101 | G4bool withTol = true);
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| 102 |
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| 103 | private:
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| 104 |
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| 105 | virtual void SetCorners();
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| 106 | virtual void SetBoundaries();
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| 107 |
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| 108 | inline double xAxisMax(G4double u, G4double fTanAlpha) const;
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| 109 |
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| 110 | private:
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| 111 |
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| 112 | G4double fDx1;
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| 113 | G4double fDx2;
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| 114 | G4double fDy;
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| 115 | G4double fDz;
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| 116 | G4double fPhiTwist;
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| 117 | G4double fAlpha;
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| 118 | G4double fTAlph;
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| 119 | G4double fPhi;
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| 120 | G4double fTheta;
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| 121 | G4double fdeltaX;
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| 122 | G4double fdeltaY;
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| 123 | };
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| 124 |
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| 125 | //========================================================
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| 126 | // inline functions
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| 127 | //========================================================
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| 128 |
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| 129 | inline
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| 130 | G4double G4TwistTrapFlatSide::xAxisMax(G4double u, G4double fTanAlpha) const
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| 131 | {
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| 132 | return ( ( fDx2 + fDx1 )/2. + u*(fDx2 - fDx1)/(2.*fDy) + u *fTanAlpha ) ;
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| 133 | }
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| 134 |
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| 135 | inline G4ThreeVector
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| 136 | G4TwistTrapFlatSide::SurfacePoint(G4double x, G4double y, G4bool isGlobal)
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| 137 | {
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| 138 | G4ThreeVector SurfPoint ( x,y,0);
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| 139 |
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| 140 | if (isGlobal) { return (fRot*SurfPoint + fTrans); }
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| 141 | return SurfPoint;
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| 142 | }
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| 143 |
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| 144 | inline
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| 145 | G4double G4TwistTrapFlatSide::GetBoundaryMin(G4double y )
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| 146 | {
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| 147 | return -xAxisMax(y, -fTAlph ) ;
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| 148 | }
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| 149 |
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| 150 | inline
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| 151 | G4double G4TwistTrapFlatSide::GetBoundaryMax(G4double y )
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| 152 | {
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| 153 | return xAxisMax(y, fTAlph ) ;
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| 154 | }
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| 155 |
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| 156 | inline
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| 157 | G4double G4TwistTrapFlatSide::GetSurfaceArea()
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| 158 | {
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| 159 | return 2*(fDx1 + fDx2)*fDy ;
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| 160 | }
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| 161 |
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| 162 | #endif
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