#ifndef CBMSTTMINUITVERTEXFITTER_H
#define CBMSTTMINUITVERTEXFITTER_H 

#include <string>
#include <sstream>

#include "CbmRootManager.h"
#include "CbmTask.h"

#include "CbmSttVertex.h"
#include "CbmSttGeomPoint.h"
#include "CbmSttVertexFitter.h"
#include "CbmSttTrack.h"

using std::string;

void fcnVertex(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);

class CbmSttMinuitVertexFitter : public CbmSttVertexFitter  
{
 public:
  
  /** Default constructor **/
  CbmSttMinuitVertexFitter();
  
  /** Destructor **/
  virtual ~CbmSttMinuitVertexFitter();
  
  /** Virtual method Init. If needed, to be implemented in the
   ** concrete class. Else no action.**/
  virtual void Init();
  Int_t GetNumberOfTracks() const;
  CbmSttTrack *GetTrackPtr(Int_t index) const;
  Double_t GetTrackPar(Int_t trackNo, Int_t index) const;

  
  Int_t DoFit(CbmSttVertex* pVertex); 
  
 private:
  Int_t fNumberOfTracks;
  CbmSttTrack *tracks[2];
  CbmSttGeomPoint GetStartVertex(CbmSttTrack* pTrack1, CbmSttTrack* pTrack2);
  TClonesArray *fSttTracks; 
  ClassDef(CbmSttMinuitVertexFitter,1);
};

#endif