Class to represent one pixel, used in clustering for fast access. More...

#include <Pixel.h>

Public Member Functions
	Pixel (unsigned int index=0)
	Construct using only an index, used for testing.

	Pixel (const PXDDigit *digit, unsigned int index)
	Construct from a given PXDDigit and its store index.

	Pixel (const PXDRawHit *rawhit, unsigned int index)
	Construct from a given PXDRawHit and its store index.

	Pixel (unsigned int index, unsigned short u, unsigned short v, float charge)
	Construct using an index, coordinates and charge.

bool	operator< (const Pixel &b) const
	Comparison operator, sorting by row,column in ascending order.

bool	operator<= (const Pixel &b) const
	Comparison operator, sorting by row,column in ascending order.

bool	operator> (const Pixel &b) const
	Comparison operator, sorting by row,column in ascending order.

bool	operator>= (const Pixel &b) const
	Comparison operator, sorting by row,column in ascending order.

bool	operator== (const Pixel &b) const
	Equality operator.

unsigned short	getU () const
	Return the CellID in u.

unsigned short	getV () const
	Return the CellID in v.

float	getCharge () const
	Return the Charge of the Pixel.

unsigned int	getIndex () const
	Return the Index of the digit.

void	setCharge (float newCharge)
	Adjust the charge of a pixel.

Private Attributes
unsigned int	m_index
	Index of the corresponding PXDDigit in the StoreArray.

unsigned short	m_u
	Cell ID in u.

unsigned short	m_v
	Cell ID in v.

float	m_charge
	Charge of the pixel.

Detailed Description

Class to represent one pixel, used in clustering for fast access.

This class is a wrapper around PXDDigit or PXDRawHit to provide ordered access. Ordering is row-wise: first all digits/rawhits belonging to the first row, ordered by column in ascending order.

The Pixel object contains a copy of the essential values of the PXDDigit or PXDRawHit to speed up lookup during sorting or clustering. PXDDigit or RawHit is not used directly as a) we need the index of the digit after clustering and the digit does not keep its own index and b) Inheriting from TObject makes the PXDDigit/PXDRawHit more than three times larger than this small class

Definition at line 36 of file Pixel.h.

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

pxd/reconstruction/include/Pixel.h

Public Member Functions

Private Attributes

Detailed Description