SQTrackletFitter.h

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#ifndef _SQTRACKLETFITTER_H
#define _SQTRACKLETFITTER_H
 
#include <Math/Factory.h>
#include <Math/Minimizer.h>
#include <Math/Functor.h>
 
#include "FastTracklet.h"
 
class SQTrackletFitter
{
public:
  SQTrackletFitter(bool KMAG_ON = true);
  ~SQTrackletFitter();
 
  int fit(Tracklet& tracklet);
 
  double getParameter(int idx) { return minimizer->X()[idx]; }
  double getParaError(int idx) { return minimizer->Errors()[idx]; }
 
  double getChi2() { return minimizer->MinValue();}
 
private:
  Tracklet tracklet_fit;
 
  double tx_max;
  double ty_max;
  double x0_max;
  double y0_max;
  double invP_min, invP_max;
 
  unsigned int nParameters;
  ROOT::Math::Minimizer* minimizer;
  ROOT::Math::Functor fcn;
};
 
#endif