CbmKFVertexInterface.h

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/** Abstract base class for vertex is being used by the CbmKF Kalman Filter
 *
 * @author  S.Gorbunov
 * @version 0.0
 * @since   02.12.05
 *
 * The class members describes to the CbmKF Kalman Filter routines
 * how to get acces to data in a derived (or user) class.
 *
 * To be used by high-level utilites like StsTrackFitter
 *
 * Usage is similar to CbmKFTrackInterface class
 *
 */
 
#ifndef CBMKFVERTEXINTERFACE_H
#define CBMKFVERTEXINTERFACE_H
 
#include "TObject.h"
 
class CbmVertex;
 
class CbmKFVertexInterface : public TObject
{
 
  public:
    CbmKFVertexInterface() {}
    virtual ~CbmKFVertexInterface() {}
 
    /** I/O parameters for vertex fit routines
     */
 
    virtual Double_t& GetRefX();
    virtual Double_t& GetRefY();
    virtual Double_t& GetRefZ();
    virtual Double_t* GetCovMatrix();   /// Array[6] of covariance matrix
    virtual Double_t& GetRefChi2();     /// Chi^2 after fit
    virtual Int_t& GetRefNDF();         /// Number of Degrees of Freedom after fit
    virtual Int_t& GetRefNTracks();     /// Number of tracks used during fit
 
    void SetVertex(CbmVertex& v);
    void GetVertex(CbmVertex& v);
 
    ClassDef(CbmKFVertexInterface, 1)
};
 
#endif /* !CBMKFVERTEXINTERFACE_H */