CbmKFSecondaryVertexFinder.h

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#ifndef CBMKFSECONDARYVERTEXFINDER_H
#define CBMKFSECONDARYVERTEXFINDER_H
 
#include "CbmKFTrackInterface.h"
#include "CbmKFVertexInterface.h"
 
#include <vector>
 
class CbmKFSecondaryVertexFinder:public TObject {
  
  std::vector<CbmKFTrackInterface*> vTracks;
  Int_t NDF;
  Double_t Chi2, MassConstraint;
  Double_t r[8], r0[8], C[36];
  CbmKFVertexInterface *VParent, *VGuess;
 
  void AddMassConstraint();
  void AddTopoConstraint();
  Double_t& Cij( Int_t i, Int_t j ){ 
    return C[( j<=i ) ? i*(i+1)/2+j :j*(j+1)/2+i];
  }
 
 public:
 
  CbmKFSecondaryVertexFinder(): vTracks(), NDF(0), Chi2(0), MassConstraint(0), VParent(0), VGuess(0) { Clear(); };
  ~CbmKFSecondaryVertexFinder(){};
 
  void Clear();
  void ClearTracks();
  void AddTrack( CbmKFTrackInterface* Track );
  void SetTracks( std::vector<CbmKFTrackInterface*> &vTracks );
  void SetApproximation( CbmKFVertexInterface *Guess=0 );
  void SetMassConstraint( Double_t MotherMass=-1 );
  void SetTopoConstraint( CbmKFVertexInterface *Parent=0 );
  void Fit();
  void GetVertex( CbmKFVertexInterface  &vtx );
  void GetVertex( CbmVertex  &vtx );
  void GetMotherTrack( Double_t T[], Double_t C[] );
  void GetMass( Double_t *M, Double_t *Error );
  void Extrapolate( double T );
 
  ClassDef( CbmKFSecondaryVertexFinder, 1 );
 
 private:
  CbmKFSecondaryVertexFinder(const CbmKFSecondaryVertexFinder&);
  void operator=(const CbmKFSecondaryVertexFinder&);
};
#endif /* !CBMKFSECONDARYVERTEXFINDER_H */