extended/parallel/TBB/B2b/include/B2bChamberParameterisation.hh

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// $Id$
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/// \file B2bChamberParameterisation.hh
/// \brief Definition of the B2bChamberParameterisation class

#ifndef B2bChamberParameterisation_h
#define B2bChamberParameterisation_h 1

#include "globals.hh"
#include "G4VPVParameterisation.hh"

class G4VPhysicalVolume;
class G4Box;

// Dummy declarations to get rid of warnings ...
class G4Trd;
class G4Trap;
class G4Cons;
class G4Orb;
class G4Sphere;
class G4Ellipsoid;
class G4Torus;
class G4Para;
class G4Hype;
class G4Tubs;
class G4Polycone;
class G4Polyhedra;

///  A parameterisation that describes a series of boxes along Z.
///
///  The boxes have equal width, & their lengths are a linear equation.
///  They are spaced an equal distance apart, starting from given location.

class B2bChamberParameterisation : public G4VPVParameterisation
{ 
  public:
  
    B2bChamberParameterisation(G4int    noChambers, 
                              G4double startZ, 
                              G4double spacing,
                              G4double widthChamber, 
                              G4double lengthInitial,
                              G4double lengthFinal );

    virtual ~B2bChamberParameterisation();
   
    void ComputeTransformation (const G4int copyNo,
                                G4VPhysicalVolume* physVol) const;
    
    void ComputeDimensions (G4Tubs & trackerLayer, const G4int copyNo,
                            const G4VPhysicalVolume* physVol) const;

  private:  // Dummy declarations to get rid of warnings ...

    void ComputeDimensions (G4Box&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Trd&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Trap&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Cons&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Sphere&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Orb&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Ellipsoid&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Torus&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Para&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Hype&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Polycone&,const G4int,
                            const G4VPhysicalVolume*) const {}
    void ComputeDimensions (G4Polyhedra&,const G4int,
                            const G4VPhysicalVolume*) const {}

  private:

    G4int    fNoChambers;   
    G4double fStartZ;
    G4double fHalfWidth;        //  The half-width of each tracker chamber
    G4double fSpacing;          //  The distance between the chambers' center
    G4double fRmaxFirst;        //  The first half-length 
    G4double fRmaxIncr;         //  The Increment for the half-length 
};

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#endif