JRECONSTRUCTION::JPointing Class Reference

Auxiliary class to compare fit results with respect to a reference direction (e.g. true muon). More...

#include <JEvtToolkit.hh>

Public Member Functions
	JPointing ()
	Default constructor. More...
	JPointing (const JVersor3D &dir)
	Constructor. More...
JVersor3D	getDirection () const
	Get direction. More...
double	getDot (const JFit &fit) const
	Get dot product between reference direction and fit result. More...
double	getAngle (const JFit &fit) const
	Get angle between reference direction and fit result. More...
bool	operator() (const JFit &first, const JFit &second) const
	Comparison of fit results. More...
template<class T >
T	operator() (T __begin, T __end) const
	Select best fit result. More...

Protected Attributes
JVersor3D	dir

Detailed Description

Auxiliary class to compare fit results with respect to a reference direction (e.g. true muon).

The sort operation results in an ordered set of fit results with increasing angle between the reference direction and that of the fit results.

Definition at line 524 of file JReconstruction/JEvtToolkit.hh.

Constructor & Destructor Documentation

JRECONSTRUCTION::JPointing::JPointing ( )

inline

Default constructor.

Definition at line 529 of file JReconstruction/JEvtToolkit.hh.

    {}

JRECONSTRUCTION::JPointing::JPointing ( const JVersor3D &  dir )

inline

Constructor.

Parameters

dir	reference direction

Definition at line 538 of file JReconstruction/JEvtToolkit.hh.

    {
      this->dir = dir;
    }

Member Function Documentation

JVersor3D JRECONSTRUCTION::JPointing::getDirection ( ) const

inline

Get direction.

Returns

direction

Definition at line 549 of file JReconstruction/JEvtToolkit.hh.

    {
      return dir;
    }

double JRECONSTRUCTION::JPointing::getDot ( const JFit &  fit ) const

inline

Get dot product between reference direction and fit result.

Parameters

fit

fit

Returns

dot product

Definition at line 561 of file JReconstruction/JEvtToolkit.hh.

    {
      return JRECONSTRUCTION::getDot(fit, dir);
    }

double JRECONSTRUCTION::JPointing::getAngle ( const JFit &  fit ) const

inline

Get angle between reference direction and fit result.

Parameters

fit

fit

Returns

angle [deg]

Definition at line 573 of file JReconstruction/JEvtToolkit.hh.

    {
      const double dot = getDot(fit);

      if      (dot >= +1.0)
        return   0.0;
      else if (dot <= -1.0)
        return 180.0;
      else
        return acos(dot) * 180.0 / JMATH::PI;
    }

bool JRECONSTRUCTION::JPointing::operator() ( const JFit &  first, const JFit &  second  ) const

inline

Comparison of fit results.

Parameters

first	first fit
second	second fit

Returns

true if first fit better; else false

Definition at line 593 of file JReconstruction/JEvtToolkit.hh.

    {
      return this->getDot(first) > this->getDot(second);
    }

template<class T >

T JRECONSTRUCTION::JPointing::operator() ( T  __begin, T  __end  ) const

inline

Select best fit result.

Parameters

__begin	begin of fit results
__end	end of fit results

Returns

best fit result

Definition at line 607 of file JReconstruction/JEvtToolkit.hh.

    {
      return std::min_element(__begin, __end, *this);
    }

Member Data Documentation

JVersor3D JRECONSTRUCTION::JPointing::dir

protected

Definition at line 613 of file JReconstruction/JEvtToolkit.hh.

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The documentation for this class was generated from the following file:

• JReconstruction/JEvtToolkit.hh