Trk::ComparisonFunction< T > Class Template Reference

#include <ComparisonFunction.h>

Collaboration diagram for Trk::ComparisonFunction< T >:

Public Member Functions
	ComparisonFunction ()=default
	Default. More...
	ComparisonFunction (const ComparisonFunction &cpf)=default
	ComparisonFunction (ComparisonFunction &&cpf)=default
ComparisonFunction &	operator= (const ComparisonFunction &cpf)=default
ComparisonFunction &	operator= (ComparisonFunction &&cpf)=default
	~ComparisonFunction ()=default
	ComparisonFunction (const Amg::Vector3D &sp)
	Constructor for pointlike Search. More...
	ComparisonFunction (const Amg::Vector3D &sp, const Amg::Vector3D &dir)
	Constructor with point and line, search with direction. More...
	ComparisonFunction (double cradius)
	Search wrt to distance wrt to radius. More...
bool	operator() (const T *one, const T *two) const
bool	operator() (const std::unique_ptr< T > &one, const std::unique_ptr< T > &two) const

Private Attributes
Amg::Vector3D	m_point
Amg::Vector3D	m_line
double	m_radius = 0.
int8_t	m_hasPointAndLine = 0

Detailed Description

template<class T>
class Trk::ComparisonFunction< T >

this functor is used to find the closest objects:

• a point
• a line
• a cylinder of radius R

Author

Andre.nosp@m.as.S.nosp@m.alzbu.nosp@m.rger.nosp@m.@cern.nosp@m..ch

Christos Anastopoulos (MT cleanup)

Definition at line 33 of file ComparisonFunction.h.

Constructor & Destructor Documentation

ComparisonFunction() [1/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( )

default

Default.

ComparisonFunction() [2/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( const ComparisonFunction< T > &  cpf )

default

ComparisonFunction() [3/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( ComparisonFunction< T > &&  cpf )

default

~ComparisonFunction()

template<class T >

Trk::ComparisonFunction< T >::~ComparisonFunction ( )

default

ComparisonFunction() [4/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( const Amg::Vector3D &  sp )

inline

Constructor for pointlike Search.

Definition at line 45 of file ComparisonFunction.h.

    : m_point(sp)
    , m_line{}
    , m_radius{ 0 }
    , m_hasPointAndLine{ 1 }
  {
    m_line.setZero();
  }

ComparisonFunction() [5/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( const Amg::Vector3D &  sp, const Amg::Vector3D &  dir  )

inline

Constructor with point and line, search with direction.

Definition at line 55 of file ComparisonFunction.h.

    : m_point(sp)
    , m_line(dir)
    , m_radius{ 0. }
    , m_hasPointAndLine{ 2 }
  {}

ComparisonFunction() [6/6]

template<class T >

Trk::ComparisonFunction< T >::ComparisonFunction ( double  cradius )

inline

Search wrt to distance wrt to radius.

Definition at line 63 of file ComparisonFunction.h.

    : m_point{}
    , m_line{}
    , m_radius{ std::abs(cradius) }
    , m_hasPointAndLine{ 0 }
  {
    m_point.setZero();
    m_line.setZero();
  }

Member Function Documentation

operator()() [1/2]

template<class T >

bool Trk::ComparisonFunction< T >::operator() ( const std::unique_ptr< T > &  one, const std::unique_ptr< T > &  two  ) const

inline

Definition at line 102 of file ComparisonFunction.h.

                                                     {
    return this->operator()(one.get(), two.get());
  }

operator()() [2/2]

template<class T >

bool Trk::ComparisonFunction< T >::operator() ( const T *  one, const T *  two  ) const

inline

Definition at line 73 of file ComparisonFunction.h.

  {
    if (m_hasPointAndLine == 0) {
      return (fabs(one->position().perp() - m_radius) <
              fabs(two->position().perp() - m_radius));
    }
    if (m_hasPointAndLine == 1) {
      return ((one->position() - m_point).mag() <
              (two->position() - m_point).mag());
    }
    Amg::Vector3D distPosOne((one->position()) - m_point);
    double lmag2 = m_line.mag();
    lmag2 *= lmag2;
    double dp1_mag2 = distPosOne.mag();
    dp1_mag2 *= dp1_mag2;
    double pl1_2 = m_line.dot(distPosOne);
    pl1_2 *= pl1_2;
    double distOne = (lmag2 * dp1_mag2 - pl1_2) / dp1_mag2;
 
    Amg::Vector3D distPosTwo((two->position()) - m_point);
    double dp2_mag2 = distPosTwo.mag();
    dp1_mag2 *= dp1_mag2;
    double pl2_2 = m_line.dot(distPosTwo);
    pl1_2 *= pl1_2;
    double distTwo = (lmag2 * dp2_mag2 - pl2_2) / dp2_mag2;
 
    return (fabs(distOne) < fabs(distTwo));
  }

operator=() [1/2]

template<class T >

ComparisonFunction& Trk::ComparisonFunction< T >::operator= ( ComparisonFunction< T > &&  cpf )

default

operator=() [2/2]

template<class T >

ComparisonFunction& Trk::ComparisonFunction< T >::operator= ( const ComparisonFunction< T > &  cpf )

default

Member Data Documentation

m_hasPointAndLine

template<class T >

int8_t Trk::ComparisonFunction< T >::m_hasPointAndLine = 0

private

Definition at line 112 of file ComparisonFunction.h.

m_line

template<class T >

Amg::Vector3D Trk::ComparisonFunction< T >::m_line

private

Definition at line 109 of file ComparisonFunction.h.

m_point

template<class T >

Amg::Vector3D Trk::ComparisonFunction< T >::m_point

private

Definition at line 108 of file ComparisonFunction.h.

m_radius

template<class T >

double Trk::ComparisonFunction< T >::m_radius = 0.

private

Definition at line 110 of file ComparisonFunction.h.

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

• ComparisonFunction.h