JFIT::JPointing Class Reference

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

#include <JEvtToolkit.hh>

Public Member Functions
	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 533 of file JEvtToolkit.hh.

Constructor & Destructor Documentation

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

inline

Constructor.

Parameters

dir	reference direction

Definition at line 540 of file JEvtToolkit.hh.

    {
      this->dir = dir;
    }

Member Function Documentation

JVersor3D JFIT::JPointing::getDirection ( ) const

inline

Get direction.

Returns

direction

Definition at line 551 of file JEvtToolkit.hh.

    {
      return dir;
    }

double JFIT::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 563 of file JEvtToolkit.hh.

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

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

inline

Get angle between reference direction and fit result.

Parameters

fit

fit

Returns

angle [deg]

Definition at line 575 of file 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 / JTOOLS::PI;
    }

bool JFIT::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 worse; else false

Definition at line 595 of file JEvtToolkit.hh.

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

template<class T >

T JFIT::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 609 of file JEvtToolkit.hh.

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

Member Data Documentation

JVersor3D JFIT::JPointing::dir

protected

Definition at line 615 of file JEvtToolkit.hh.

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

• JEvtToolkit.hh