KinematicPerigeeConversions.h

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#ifndef KinematicPerigeeConversions_H
#define KinematicPerigeeConversions_h

#include "RecoVertex/KinematicFitPrimitives/interface/KinematicParameters.h"
#include "RecoVertex/KinematicFitPrimitives/interface/KinematicState.h"
#include "RecoVertex/KinematicFitPrimitives/interface/ExtendedPerigeeTrajectoryParameters.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "RecoVertex/KinematicFitPrimitives/interface/Matrices.h"

class KinematicPerigeeConversions
{
public:

 KinematicPerigeeConversions()
 {}
 
 ExtendedPerigeeTrajectoryParameters extendedPerigeeFromKinematicParameters
    (const KinematicState& state, const GlobalPoint& point) const;
                       
 KinematicParameters kinematicParametersFromExPerigee
    (const ExtendedPerigeeTrajectoryParameters& pr, const GlobalPoint& point,
     const MagneticField* field) const;
                              
 KinematicState kinematicState(const AlgebraicVector4& momentum,
    const GlobalPoint& referencePoint, const TrackCharge& charge,
    const AlgebraicSymMatrix77& theCovarianceMatrix, const MagneticField* field) const;
                 
 AlgebraicVector4 momentumFromPerigee(const AlgebraicVector4& momentum,
    const GlobalPoint& referencePoint, const TrackCharge& ch,
    const MagneticField* field) const;
                     
private:
  AlgebraicMatrix77 jacobianParameters2Kinematic(const AlgebraicVector4& momentum, 
    const GlobalPoint& referencePoint, const TrackCharge& charge,
    const MagneticField* field) const;
};
#endif