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00045 #ifndef __G4TWISTTRAPFLATSIDE__
00046 #define __G4TWISTTRAPFLATSIDE__
00047
00048 #include "G4VTwistSurface.hh"
00049
00050 class G4TwistTrapFlatSide : public G4VTwistSurface
00051 {
00052 public:
00053
00054 G4TwistTrapFlatSide( const G4String& name,
00055 G4double PhiTwist,
00056 G4double pDx1,
00057 G4double pDx2,
00058 G4double pDy,
00059 G4double pDz,
00060 G4double pAlpha,
00061 G4double pPhi,
00062 G4double pTheta,
00063 G4int handedness );
00064 virtual ~G4TwistTrapFlatSide();
00065
00066 virtual G4ThreeVector GetNormal(const G4ThreeVector & ,
00067 G4bool isGlobal = false);
00068 virtual G4int DistanceToSurface(const G4ThreeVector &gp,
00069 const G4ThreeVector &gv,
00070 G4ThreeVector gxx[],
00071 G4double distance[],
00072 G4int areacode[],
00073 G4bool isvalid[],
00074 EValidate validate = kValidateWithTol);
00075
00076 virtual G4int DistanceToSurface(const G4ThreeVector &gp,
00077 G4ThreeVector gxx[],
00078 G4double distance[],
00079 G4int areacode[]);
00080
00081
00082 virtual G4ThreeVector SurfacePoint(G4double x, G4double y,
00083 G4bool isGlobal = false);
00084 virtual G4double GetBoundaryMin(G4double u);
00085 virtual G4double GetBoundaryMax(G4double u);
00086 virtual G4double GetSurfaceArea();
00087 virtual void GetFacets( G4int m, G4int n, G4double xyz[][3],
00088 G4int faces[][4], G4int iside );
00089
00090 public:
00091
00092 G4TwistTrapFlatSide(__void__&);
00093
00094
00095
00096
00097 protected:
00098
00099 virtual G4int GetAreaCode(const G4ThreeVector &xx,
00100 G4bool withTol = true);
00101
00102 private:
00103
00104 virtual void SetCorners();
00105 virtual void SetBoundaries();
00106
00107 inline double xAxisMax(G4double u, G4double fTanAlpha) const;
00108
00109 private:
00110
00111 G4double fDx1;
00112 G4double fDx2;
00113 G4double fDy;
00114 G4double fDz;
00115 G4double fPhiTwist;
00116 G4double fAlpha;
00117 G4double fTAlph;
00118 G4double fPhi;
00119 G4double fTheta;
00120 G4double fdeltaX;
00121 G4double fdeltaY;
00122 };
00123
00124
00125
00126
00127
00128 inline
00129 G4double G4TwistTrapFlatSide::xAxisMax(G4double u, G4double fTanAlpha) const
00130 {
00131 return ( ( fDx2 + fDx1 )/2. + u*(fDx2 - fDx1)/(2.*fDy) + u *fTanAlpha ) ;
00132 }
00133
00134 inline G4ThreeVector
00135 G4TwistTrapFlatSide::SurfacePoint(G4double x, G4double y, G4bool isGlobal)
00136 {
00137 G4ThreeVector SurfPoint ( x,y,0);
00138
00139 if (isGlobal) { return (fRot*SurfPoint + fTrans); }
00140 return SurfPoint;
00141 }
00142
00143 inline
00144 G4double G4TwistTrapFlatSide::GetBoundaryMin(G4double y )
00145 {
00146 return -xAxisMax(y, -fTAlph ) ;
00147 }
00148
00149 inline
00150 G4double G4TwistTrapFlatSide::GetBoundaryMax(G4double y )
00151 {
00152 return xAxisMax(y, fTAlph ) ;
00153 }
00154
00155 inline
00156 G4double G4TwistTrapFlatSide::GetSurfaceArea()
00157 {
00158 return 2*(fDx1 + fDx2)*fDy ;
00159 }
00160
00161 #endif