Reconstruction/TrkReco/include/TrkReco/TRobustLineFitter.h

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//-----------------------------------------------------------------------------
// $Id: TRobustLineFitter.h,v 1.4 2010/03/31 09:58:59 liucy Exp $
//-----------------------------------------------------------------------------
// Filename : TRobustLineFitter.h
// Section  : Tracking
// Owner    : Yoshi Iwasaki
// Email    : yoshihito.iwasaki@kek.jp
//-----------------------------------------------------------------------------
// Description : A class to fit a TTrackBase object to a line.
//               See http://bsunsrv1.kek.jp/~yiwasaki/tracking/
//-----------------------------------------------------------------------------
 
#ifndef TROBUSTLINEFITTER_FLAG_
#define TROBUSTLINEFITTER_FLAG_
 
#ifdef TRKRECO_DEBUG_DETAIL
#  ifndef TRKRECO_DEBUG
#    define TRKRECO_DEBUG
#  endif
#endif
 
#include <string>
 
// #define HEP_SHORT_NAMES
#include "TrkReco/TLineFitter.h"
 
/// A class to fit a TTrackBase object to a line.
class TRobustLineFitter : public TLineFitter {
 
public:
  /// Constructor.
  TRobustLineFitter( const std::string& name );
 
  /// Destructor
  virtual ~TRobustLineFitter();
 
public: // Selectors
  /// dumps debug information.
  void   dump( const std::string& message = std::string( "" ),
               const std::string& prefix  = std::string( "" ) ) const;
  double a( void ) const;
  double b( void ) const;
  double det( void ) const;
 
public: // Modifiers
  virtual int fit( TTrackBase& ) const;
 
private:
  double rofunc( const TTrackBase&, double ) const;
  double select( unsigned k, unsigned n, double* ) const;
 
private:
  mutable double   _a;
  mutable double   _b;
  mutable double   _det;
  mutable unsigned _n;
};
 
//-----------------------------------------------------------------------------
 
#ifdef TRKRECO_NO_INLINE
#  define inline
#else
#  undef inline
#  define TROBUSTLINEFITTER_INLINE_DEFINE_HERE
#endif
 
#ifdef TROBUSTLINEFITTER_INLINE_DEFINE_HERE
 
inline double TRobustLineFitter::a( void ) const { return _a; }
 
inline double TRobustLineFitter::b( void ) const { return _b; }
 
inline double TRobustLineFitter::det( void ) const { return _det; }
 
#endif
 
#undef inline
 
#endif /* TROBUSTLINEFITTER_FLAG_ */