Gabriele Cosmo
163 lines
5.5 KiB
C++
163 lines
5.5 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4TwistTrapFlatSide.hh,v 1.5 2006/06/29 18:47:48 gunter Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class header file
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//
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//
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// G4FlatTrapSurface
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//
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// Class description:
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//
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// Class describing a flat boundary surface for a trapezoid.
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// Author:
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//
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// 27-Oct-2004 - O.Link (Oliver.Link@cern.ch)
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//
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// --------------------------------------------------------------------
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#ifndef __G4TWISTTRAPFLATSIDE__
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#define __G4TWISTTRAPFLATSIDE__
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#include "G4VTwistSurface.hh"
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class G4TwistTrapFlatSide : public G4VTwistSurface
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{
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public: // with description
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G4TwistTrapFlatSide( const G4String& name,
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G4double PhiTwist,
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G4double pDx1,
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G4double pDx2,
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G4double pDy,
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G4double pDz,
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G4double pAlpha,
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G4double pPhi,
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G4double pTheta,
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G4int handedness );
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virtual ~G4TwistTrapFlatSide();
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virtual G4ThreeVector GetNormal(const G4ThreeVector & /* xx */ ,
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G4bool isGlobal = false);
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virtual G4int DistanceToSurface(const G4ThreeVector &gp,
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const G4ThreeVector &gv,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[],
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G4bool isvalid[],
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EValidate validate = kValidateWithTol);
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virtual G4int DistanceToSurface(const G4ThreeVector &gp,
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G4ThreeVector gxx[],
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G4double distance[],
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G4int areacode[]);
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virtual G4ThreeVector SurfacePoint(G4double x, G4double y,
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G4bool isGlobal = false);
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virtual G4double GetBoundaryMin(G4double u);
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virtual G4double GetBoundaryMax(G4double u);
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virtual G4double GetSurfaceArea();
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virtual void GetFacets( G4int m, G4int n, G4double xyz[][3],
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G4int faces[][4], G4int iside );
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public: // without description
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G4TwistTrapFlatSide(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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protected: // with description
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virtual G4int GetAreaCode(const G4ThreeVector &xx,
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G4bool withTol = true);
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private:
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virtual void SetCorners();
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virtual void SetBoundaries();
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inline double xAxisMax(G4double u, G4double fTanAlpha) const;
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private:
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G4double fDx1;
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G4double fDx2;
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G4double fDy;
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G4double fDz;
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G4double fPhiTwist;
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G4double fAlpha;
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G4double fTAlph;
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G4double fPhi;
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G4double fTheta;
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G4double fdeltaX;
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G4double fdeltaY;
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};
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//========================================================
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// inline functions
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//========================================================
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inline
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G4double G4TwistTrapFlatSide::xAxisMax(G4double u, G4double fTanAlpha) const
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{
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return ( ( fDx2 + fDx1 )/2. + u*(fDx2 - fDx1)/(2.*fDy) + u *fTanAlpha ) ;
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}
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inline G4ThreeVector
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G4TwistTrapFlatSide::SurfacePoint(G4double x, G4double y, G4bool isGlobal)
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{
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G4ThreeVector SurfPoint ( x,y,0);
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if (isGlobal) { return (fRot*SurfPoint + fTrans); }
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return SurfPoint;
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}
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inline
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G4double G4TwistTrapFlatSide::GetBoundaryMin(G4double y )
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{
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return -xAxisMax(y, -fTAlph ) ;
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}
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inline
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G4double G4TwistTrapFlatSide::GetBoundaryMax(G4double y )
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{
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return xAxisMax(y, fTAlph ) ;
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}
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inline
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G4double G4TwistTrapFlatSide::GetSurfaceArea()
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{
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return 2*(fDx1 + fDx2)*fDy ;
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}
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#endif
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