#ifndef __MUTKALMANTRACKPARAM_H__
#define __MUTKALMANTRACKPARAM_H__
// MutKalmanTrackParam.h
//
// Kalman track parameters for muon tracker: header file
//---------------------------------------------------------------------

#include "TMatrixD.h"
#include "TObject.h"
#include "TVectorD.h"

// "public TObject" to use Root facilities
class MutKalmanTrackParam : public TObject {

 public:
  // basic constructor, never to be called?
  MutKalmanTrackParam();
  virtual ~MutKalmanTrackParam(); // destructor
  MutKalmanTrackParam (const MutKalmanTrackParam& TrackParam); // copy constructor
  MutKalmanTrackParam& operator=(const MutKalmanTrackParam& TrackParam); // assignment operator

  TVectorD* GetParameters() {return fParameters;}
  void SetParameters(TVectorD* Param) {*fParameters = *Param;}
  void SetParameters(TMatrixD* Param); // Param(5,1)
  TMatrixD* GetCovarianceMatrix() {return fCovarianceMatrix;}
  void SetCovarianceMatrix(TMatrixD* Cov) {*fCovarianceMatrix = *Cov;}

  MutKalmanTrackParam* ExtrapBackward(Double_t Zin, Double_t Zout, TMatrixD* DPoutDPin);
  void Print();

 protected:

 private:
  TVectorD *fParameters; //! pointer to: parameters
  TMatrixD *fCovarianceMatrix; //! pointer to: covariance matrix of parameters
  // class version
  ClassDef(MutKalmanTrackParam, 1) // Kalman track in PHENIX dimuon spectrometer
    };
#endif /*__MUTKALMANTRACKPARAM_H__*/