Gabriele Cosmo
195 lines
7.4 KiB
C++
195 lines
7.4 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: G4TwistTubsSide.hh,v 1.5 2006/06/29 18:47:58 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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// G4TwistTubsSide
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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 cylinder.
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// Author:
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// 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp)
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//
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// History:
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// 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4
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// from original version in Jupiter-2.5.02 application.
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// --------------------------------------------------------------------
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#ifndef __G4TWISTTUBSSIDE__
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#define __G4TWISTTUBSSIDE__
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#include "G4VTwistSurface.hh"
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class G4TwistTubsSide : public G4VTwistSurface
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{
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public: // with description
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G4TwistTubsSide(const G4String &name,
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const G4RotationMatrix &rot, // 0.5*(phi-width segment)
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const G4ThreeVector &tlate,
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G4int handedness, // R-hand = 1, L-hand = -1
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const G4double kappa, // tan(TwistAngle/2)/fZHalfLen
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const EAxis axis0 = kXAxis,
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const EAxis axis1 = kZAxis,
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G4double axis0min = -kInfinity,
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G4double axis1min = -kInfinity,
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G4double axis0max = kInfinity,
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G4double axis1max = kInfinity );
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G4TwistTubsSide(const G4String &name,
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G4double EndInnerRadius[2],
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G4double EndOuterRadius[2],
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G4double DPhi,
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G4double EndPhi[2],
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G4double EndZ[2],
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G4double InnerRadius,
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G4double OuterRadius,
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G4double Kappa,
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G4int handedness);
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virtual ~G4TwistTubsSide();
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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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inline G4ThreeVector ProjectAtPXPZ(const G4ThreeVector &p,
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G4bool isglobal = false) const ;
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virtual G4ThreeVector SurfacePoint(G4double, G4double,
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G4bool isGlobal = false) ;
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virtual G4double GetBoundaryMin(G4double phi) ;
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virtual G4double GetBoundaryMax(G4double phi) ;
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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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G4TwistTubsSide(__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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private:
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virtual G4double DistanceToPlane(const G4ThreeVector &p,
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const G4ThreeVector &A,
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const G4ThreeVector &B,
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const G4ThreeVector &C,
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const G4ThreeVector &D,
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const G4int parity,
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G4ThreeVector &xx,
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G4ThreeVector &n);
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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 SetCorners( G4double endInnerRad[2],
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G4double endOuterRad[2],
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G4double endPhi[2],
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G4double endZ[2] ) ;
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virtual void SetBoundaries();
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private:
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G4double fKappa; // std::tan(TwistedAngle/2)/HalfLenZ;
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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 G4TwistTubsSide::ProjectAtPXPZ(const G4ThreeVector &p,
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G4bool isglobal) const
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{
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// Get Rho at p.z() on Hyperbolic Surface.
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G4ThreeVector tmpp;
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if (isglobal) {
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tmpp = fRot.inverse()*p - fTrans;
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} else {
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tmpp = p;
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}
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G4ThreeVector xx(p.x(), p.x() * fKappa * p.z(), p.z());
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if (isglobal) { return (fRot * xx + fTrans); }
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return xx;
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}
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inline
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G4ThreeVector
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G4TwistTubsSide::SurfacePoint(G4double x, G4double z, G4bool isGlobal)
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{
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G4ThreeVector SurfPoint( x , x * fKappa * z , z ) ;
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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 G4TwistTubsSide::GetBoundaryMin(G4double)
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{
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return fAxisMin[0] ; // inner radius at z = 0
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}
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inline
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G4double G4TwistTubsSide::GetBoundaryMax(G4double)
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{
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return fAxisMax[0] ; // outer radius at z = 0
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}
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inline
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G4double G4TwistTubsSide::GetSurfaceArea()
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{
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// approximation only
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return ( fAxisMax[0] - fAxisMin[0] ) * ( fAxisMax[1] - fAxisMin[1] ) ;
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}
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#endif
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