FitNode.h

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#ifndef TRACKFITEVENT_FITNODE_H
#define TRACKFITEVENT_FITNODE_H 1

// from CLHEP
#include "CLHEP/Matrix/Matrix.h"

// from TrackEvent
#include "Event/Node.h"
#include "Event/Measurement.h"

class FitNode: public Node {
public:
  FitNode();

  FitNode( Measurement* aHit );

  virtual ~FitNode();

//  /// retrieve pointer to Node Measurement
//  Measurement* measurementOnTrack() const { return m_meas; }

  const HepMatrix& transportMatrix() const  { return m_transportMatrix; }

  const HepVector& transportVector() const { return m_transportVector; }

  const HepSymMatrix& noiseMatrix() const { return m_noiseMatrix; }

  void setTransportMatrix( HepMatrix transportMatrix ) {
    m_transportMatrix = transportMatrix;
  }
  
  void setTransportVector( const HepVector& transportVector ) {
    m_transportVector = transportVector;
  }
  
  void setNoiseMatrix( const HepSymMatrix& noiseMatrix ) {
    m_noiseMatrix = noiseMatrix;
  }  

  State* predictedState() const             { return m_predictedState; }

  void setPredictedState( State* predictedState ) {
    m_predictedState = predictedState; 
  }

  void updatePredictedState( State* predictedState );

  State* filteredState() const              { return m_filteredState; }
  

  void setFilteredState( State* filteredState ) {
    m_filteredState = filteredState;
  }

  void updateFilteredState( State* filteredState );

State* bestState() const                 {  return m_state;  }

  void setBestState( State* bestState )      {  m_state = bestState; }
  
  void updateBestState( State* state );

  void addNode( FitNode* node );

  double z() const   { return m_measurement -> z(); };

private:

  HepMatrix      m_transportMatrix;  
  HepVector      m_transportVector;  
  HepSymMatrix   m_noiseMatrix;      
//  Measurement*   m_meas;             ///< measurement
  State*         m_predictedState;   
  State*         m_filteredState;    
//  State*         m_bestState;        ///< best state at this node

};


#endif // TRACKFITEVENT_FITNODE_H

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