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/// \file ExP01ChamberParameterisation.hh
/// \brief Definition of the ExP01ChamberParameterisation class

//  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.
//
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#ifndef ExP01ChamberParameterisation_H
#define ExP01ChamberParameterisation_H 1

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

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/// Chamber parameterisation for the persistency example

class ExP01ChamberParameterisation : public G4VPVParameterisation
{
  public:
    ExP01ChamberParameterisation(G4int NoChambers, G4double startZ, G4double spacing,
                                 G4double widthChamber, G4double lengthInitial,
                                 G4double lengthFinal);

    ~ExP01ChamberParameterisation();

    void ComputeTransformation(const G4int copyNo, G4VPhysicalVolume* physVol) const;

    void ComputeDimensions(G4Box& trackerLayer, const G4int copyNo,
                           const G4VPhysicalVolume* physVol) const;

  private:  // Dummy declarations to get rid of warnings ...
    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(G4Tubs&, 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 fHalfLengthFirst;  //  The first half-length
    G4double fHalfLengthIncr;  //  The Increment for the half-length
};

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#endif