InstallArea/include/TrkReco/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    : [email protected]
//-----------------------------------------------------------------------------
// 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_ */