Gabriele Cosmo
130 lines
4.7 KiB
C++
130 lines
4.7 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4TwistedBoxSide.hh,v 1.4 2004/12/08 10:20:33 link Exp $
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// GEANT4 tag $Name: geant4-07-00-cand-03 $
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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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// G4TwistedTrapSide
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//
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// Class description:
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//
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// Class describing a twisted boundary surface for a box.
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// Author:
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//
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// Oliver Link (Oliver.Link@cern.ch)
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//
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// --------------------------------------------------------------------
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#ifndef __G4TWISTEDBOXSIDE__
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#define __G4TWISTEDBOXSIDE__
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#include "G4VSurface.hh"
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#include <vector>
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class G4TwistedBoxSide : public G4VSurface
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{
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public: // with description
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G4TwistedBoxSide(const G4String &name,
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G4double PhiTwist,
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G4double fDx,
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G4double fDy,
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G4double fDz,
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G4double AngleSide);
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virtual ~G4TwistedBoxSide();
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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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private:
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virtual G4int GetAreaCode(const G4ThreeVector &xx,
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G4bool withTol = true);
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virtual void SetCorners();
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virtual void SetBoundaries();
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void GetPhiUAtX( G4ThreeVector p, G4double &phi, G4double &u);
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G4ThreeVector ProjectPoint(const G4ThreeVector &p,
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G4bool isglobal = false);
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inline G4ThreeVector SurfacePoint( G4double phi, G4double u);
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inline G4ThreeVector NormAng( G4double phi, G4double u );
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private:
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G4double fDx ;
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G4double fDy ;
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G4double fDz ;
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G4double fPhiTwist ;
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G4double fAngleSide ;
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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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G4ThreeVector G4TwistedBoxSide::SurfacePoint( G4double phi, G4double u )
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{
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// function to calculate a point on the surface, given by parameters phi,u
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G4ThreeVector SurfPoint ( fDx * std::cos(phi) - u * std::sin(phi),
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fDx * std::sin(phi) + u * std::cos(phi),
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2*fDz*phi/fPhiTwist );
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return SurfPoint ;
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}
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inline
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G4ThreeVector G4TwistedBoxSide::NormAng( G4double phi, G4double u )
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{
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// function to calculate the norm at a given point on the surface
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G4double L = 2*fDz ;
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G4ThreeVector nvec( L*std::cos(phi), L*std::sin(phi), fPhiTwist*u);
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return nvec.unit() ;
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}
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#endif
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