Reconstruction/TrkReco/include/TrkReco/T3DLineFitter.h

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//-----------------------------------------------------------------------------
// $Id: T3DLineFitter.h,v 1.15 2012/05/28 05:16:29 maoh Exp $
//-----------------------------------------------------------------------------
// Filename : T3DLineFitter.h
// Section  : Tracking
// Owner    : Kenji Inami
// Email    : inami@bmail.kek.jp
//-----------------------------------------------------------------------------
// Description : A class to fit a TTrackBase object to a 3D line.
//               See http://bsunsrv1.kek.jp/~yiwasaki/tracking/
//-----------------------------------------------------------------------------
 
#ifndef T3DLINEFITTER_FLAG_
#define T3DLINEFITTER_FLAG_
 
#ifdef TRKRECO_DEBUG_DETAIL
#  ifndef TRKRECO_DEBUG
#    define TRKRECO_DEBUG
#  endif
#endif
 
#include <string>
 
// #define HEP_SHORT_NAMES
#ifndef CLHEP_VECTOR3D_H
#  include "CLHEP/Geometry/Vector3D.h"
#endif
#ifndef ENABLE_BACKWARDS_COMPATIBILITY
typedef HepGeom::Vector3D<double> HepVector3D;
#endif
 
// #include "helix/Helix.h"
// #include "TrkReco/Helix.h"
#include "TrackUtil/Helix.h"
#include "TrkReco/TMFitter.h"
 
class TMLink;
class T3DLine;
 
/// A class to fit a TTrackBase object to a 3D line.
class T3DLineFitter : public TMFitter {
 
public:
  /// Constructor.
  T3DLineFitter( const std::string& name );
  T3DLineFitter( const std::string& name, bool m_sag, int m_prop, bool m_tof );
 
  /// Destructor
  virtual ~T3DLineFitter();
 
public: // Selectors
  /// dumps debug information.
  void dump( const std::string& message = std::string( "" ),
             const std::string& prefix  = std::string( "" ) ) const;
 
public: // Modifiers
  virtual int fit( TTrackBase& ) const;
  virtual int fit( TTrackBase&, float t0Offset ) const;
 
  void sag( bool );
  void propagation( int );
  void tof( bool );
 
private:
  /// calculates dXda. 'TMLink' and 'T3DLine' are inputs. Others are outputs.
  int dxda( const TMLink&, const T3DLine&, Vector& dxda, Vector& dyda, Vector& dzda,
            HepVector3D& wireDirection ) const;
 
  /// calculates drift distance and its error.
  void drift( const T3DLine&, const TMLink&, float t0Offset, double& distance,
              double& err ) const;
 
private:
  bool _sag;
  int  _propagation;
  bool _tof;
};
 
//-----------------------------------------------------------------------------
 
#ifdef TRKRECO_NO_INLINE
#  define inline
#else
#  undef inline
#  define T3DLINEFITTER_INLINE_DEFINE_HERE
#endif
 
#ifdef T3DLINEFITTER_INLINE_DEFINE_HERE
 
#endif
 
#undef inline
 
#endif /* T3DLINEFITTER_FLAG_ */