Reconstruction/MdcPatRec/TrkFitter/include/TrkFitter/TrkHelixFitter.h

Go to the documentation of this file.

//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: TrkHelixFitter.h,v 1.4 2011/02/17 11:54:59 maqm Exp $
//
// Description:
//  Fit track to helix or circle.  Flags allow fitter to add and drop
//   hits (i.e. make them active or inactive), and (in the case of
//   MDC hits) flip their ambiguities.
// Produces an error matrix, but does not (currently) handle multiple
//  scattering.
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author(s): Steve Schaffner
//
//------------------------------------------------------------------------
#ifndef TRKHELIXFITTER_H
#define TRKHELIXFITTER_H
 
#include "TrkBase/TrkHitOnTrkUpdater.h"
class TrkRecoTrk;
class TrkSimpTraj;
class TrkHitOnTrk;
class TrkErrCode;
class TrkHotList;
 
// Class definition//
class TrkHelixFitter : public TrkHitOnTrkUpdater {
 
public:
  TrkHelixFitter( bool allowFlips = false, bool allowDrops = false );
  virtual ~TrkHelixFitter();
  TrkHelixFitter& operator=( const TrkHelixFitter& right );
  TrkHelixFitter( const TrkHelixFitter& );
 
  TrkErrCode    fit( TrkHotList& hitList, TrkSimpTraj& );
  void          setFittingPar( bool allowFlips, bool allowDrops );
  double        lastChisq() const { return _lastChisq; }
  static bool   m_debug;
  static double nSigmaCut[43];
 
private:
  bool   _allowDrops;
  bool   _allowFlips;
  double _lastChisq;
 
  void setLastChisq( double l ) { _lastChisq = l; }
};
 
#endif