ClusterProjection Class Reference

Helper struct to collect information about the 1D projection of a Pixel cluster. More...

#include <ClusterProjection.h>

Public Member Functions
	ClusterProjection ()
	Constructor.
void	add (unsigned int cell, float position, float charge)
	Add Pixel information to the projection. More...
void	finalize ()
	Finish calculation of center of gravity and set correct cluster size. More...
double	getPos () const
	Return the projected position of the cluster. More...
double	getError () const
	Return the error of the cluster.
unsigned int	getSize () const
	Return the projected size of the cluster. More...
unsigned int	getMinCell () const
	Return the minimum cell part of the cluster.
unsigned int	getMaxCell () const
	Return the maximum cell part of the cluster.
double	getCharge () const
	Return the total charge of the cluster.
double	getMinCharge () const
	Return the charge in the minimum cell of the cluster.
double	getMaxCharge () const
	Return the charge in the maximum cell of the cluster.
double	getCenterCharge () const
	Return the center charge of the cluster, that is total charge minus minimum and maximum cell charge.
double	getMinPos () const
	Return the position of the minimum cell of the cluster.
double	getMaxPos () const
	Return the position of the maximum cell of the cluster.
void	setPos (double pos)
	Set the position of the cluster. More...
void	setError (double error)
	Set the error of the cluster.

Private Attributes
double	m_pos
	Center of gravity of the cluster.
unsigned int	m_min
	Minimum row or column of the cluster.
unsigned int	m_max
	Maximum row or column of the cluster.
double	m_minCharge
	Charge collected in the minimum row/column.
double	m_maxCharge
	Charge collected in the maximum row/column.
double	m_minPos
	Position of the minimum row/column.
double	m_maxPos
	Position of the maximum row/column.
double	m_error
	Position error of the cluster.
double	m_charge
	Charge of the full cluster.
unsigned int	m_size
	Projected size of the cluster.

Detailed Description

Helper struct to collect information about the 1D projection of a Pixel cluster.

This class just collects some information necessary to calculate the cluster position and errors: the minimum and maximum pixel row or column as well as the corresponding sensor position and charge in that row or column and the weighted (by charge) sum of positions for center of gravity determination

Definition at line 37 of file ClusterProjection.h.

Member Function Documentation

add()

void add ( unsigned int  cell, float  position, float  charge  )

inline

Add Pixel information to the projection.

This will adjust the minimal and maximal coordinates and the charge collected at these coordinates as well as increment the weighted position to calculate the center of gravity

Parameters

cell	pixel coordinate
position	pixel center position on the sensor
charge	charge in that pixel

Definition at line 112 of file ClusterProjection.h.

                                      {
        m_max = cell;
        m_maxCharge = charge;
        m_maxPos = position;
      } else if (cell == m_max) {
        m_maxCharge += charge;
      }
      //Add weighted positions for center of gravity
      m_pos += charge * position;
      m_charge += charge;
    }
 
  } // PXD namespace
 
} // Belle2 namespace
 
#endif //PXD_ClusterProjection_H

finalize()

void finalize ( )

inline

Finish calculation of center of gravity and set correct cluster size.

Should only be used once

Definition at line 54 of file ClusterProjection.h.

getPos()

double getPos ( ) const

inline

Return the projected position of the cluster.

Should only be used after a call to finalize

Definition at line 61 of file ClusterProjection.h.

getSize()

unsigned int getSize ( ) const

inline

Return the projected size of the cluster.

Should only be used after a call to finalize

Definition at line 65 of file ClusterProjection.h.

setPos()

void setPos ( double  pos )

inline

Set the position of the cluster.

Should only be used after a call to finalize

Definition at line 84 of file ClusterProjection.h.

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

• pxd/reconstruction/include/ClusterProjection.h