StEpdGeom Class Reference

Public Member Functions
unsigned short	position (short uniqueID)
unsigned short	tile (short uniqueID)
TVector3	TileCenter (short uniqueID)
TVector3	TileCenter (short position, short tilenumber, short eastwest)
TVector3	RandomPointOnTile (short uniqueID)
TVector3	RandomPointOnTile (short position, short tilenumber, short eastwest)
void	GetCorners (short uniqueID, int *nCorners, double *x, double *y)
void	GetCorners (short position, short tilenumber, short eastwest, int *nCorners, double *x, double *y)
void	GetOverlappingBbcTiles (short uniqueID, int *nOverlappingBbcTiles, short *BbcTileIDs)
void	GetOverlappingBbcTiles (short position, short tilenumber, short eastwest, int *nOverlappingBbcTiles, short *BbcTileIDs)
bool	IsInTile (short uniqueID, double x, double y)
bool	IsInTile (short position, short tilenumber, short eastwest, double x, double y)
bool	IsWest (short uniqueID)
bool	IsWest (short position, short tilenumber, short eastwest)
bool	IsEast (short uniqueID)
bool	IsEast (short position, short tilenumber, short eastwest)
short	Row (short uniqueID)
short	Row (short position, short tilenumber, short eastwest)

Detailed Description

Definition at line 24 of file StEpdGeom.h.

Member Function Documentation

void StEpdGeom::GetCorners	(	short	uniqueID,
		int *	nCorners,
		double *	x,
		double *	y
	)

returns the corners of the tile in the plane of the wheel, in STAR coordinate system

Parameters

uniqueID	identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East
*nCorners	this is a RETURNED value. Number of corners the tile has (TT01 has 5, others have 4)
x	this is a RETURNED values. x-coordinates of corners
y	this is a RETURNED values. y-coordinates of corners

Definition at line 235 of file StEpdGeom.cxx.

void StEpdGeom::GetCorners	(	short	position,
		short	tilenumber,
		short	eastwest,
		int *	nCorners,
		double *	x,
		double *	y
	)

returns the corners of the tile in the plane of the wheel, in STAR coordinate system

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel
*nCorners	this is a RETURNED value. Number of corners the tile has (TT01 has 5, others have 4)
x	this is a RETURNED values. x-coordinates of corners
y	this is a RETURNED values. y-coordinates of corners

Definition at line 240 of file StEpdGeom.cxx.

void StEpdGeom::GetOverlappingBbcTiles	(	short	uniqueID,
		int *	nOverlappingBbcTiles,
		short *	BbcTileIDs
	)

returns a list of (the IDs of) BBC tiles that overlap with a given EPD tile

Parameters

uniqueID	identifier of the EPD tile = sign*(100*PP+TT) where sign=+/- for West/East
nOverlappingBbcTiles	output parameter: number of BBC tiles that overlaps this EPD tile (even just barely)
BbcTileIDs	output parameter: array of BBC tile IDs

Definition at line 323 of file StEpdGeom.cxx.

void StEpdGeom::GetOverlappingBbcTiles	(	short	position,
		short	tilenumber,
		short	eastwest,
		int *	nOverlappingBbcTiles,
		short *	BbcTileIDs
	)

returns a list of (the IDs of) BBC tiles that overlap with a given EPD tile

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel
nOverlappingBbcTiles	output parameter: number of BBC tiles that overlaps this EPD tile (even just barely)
BbcTileIDs	output parameter: array of BBC tile IDs

Definition at line 329 of file StEpdGeom.cxx.

bool StEpdGeom::IsEast ( short  uniqueID )

inline

true if this tile is on east side

Parameters

uniqueID

identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East

Definition at line 222 of file StEpdGeom.h.

bool StEpdGeom::IsEast ( short  position, short  tilenumber, short  eastwest  )

inline

true if this tile is on east side

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel

Definition at line 223 of file StEpdGeom.h.

bool StEpdGeom::IsInTile	(	short	uniqueID,
		double	x,
		double	y
	)

returns true if (x,y) lies within the tile. Assumes z=zWheel useful if the user would like to project a track (using straight line of helix or whatever) to the plane of the wheel and determine whether it hit a given tile

Parameters

uniqueID	identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East
x	x-coordinate of projected hit
y	y-coordinate of projected hit

Definition at line 299 of file StEpdGeom.cxx.

bool StEpdGeom::IsInTile	(	short	position,
		short	tilenumber,
		short	eastwest,
		double	x,
		double	y
	)

returns true if (x,y) lies within the tile. Assumes z=zWheel useful if the user would like to project a track (using straight line of helix or whatever) to the plane of the wheel and determine whether it hit a given tile

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel
x	x-coordinate of projected hit
y	y-coordinate of projected hit

Definition at line 304 of file StEpdGeom.cxx.

bool StEpdGeom::IsWest ( short  uniqueID )

inline

true if this tile is on west side

Parameters

uniqueID

identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East

Definition at line 220 of file StEpdGeom.h.

bool StEpdGeom::IsWest ( short  position, short  tilenumber, short  eastwest  )

inline

true if this tile is on west side

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel

Definition at line 221 of file StEpdGeom.h.

TVector3 StEpdGeom::RandomPointOnTile

(

short

uniqueID

)

returns a random point somewhere on the tile. assumes a uniform hit density this is very useful for calculating things like dN/deta

Parameters

uniqueID

identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East

Definition at line 174 of file StEpdGeom.cxx.

TVector3 StEpdGeom::RandomPointOnTile	(	short	position,
		short	tilenumber,
		short	eastwest
	)

returns a random point somewhere on the tile. assumes a uniform hit density this is very useful for calculating things like dN/deta

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel

Definition at line 178 of file StEpdGeom.cxx.

short StEpdGeom::Row

(

short

uniqueID

)

the "tile row" of the tile. Row = [1,16]

Parameters

uniqueID

identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East

Definition at line 136 of file StEpdGeom.cxx.

short StEpdGeom::Row	(	short	position,
		short	tilenumber,
		short	eastwest
	)

the "tile row" of the tile. Row = [1,16]

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel

Definition at line 140 of file StEpdGeom.cxx.

TVector3 StEpdGeom::TileCenter

(

short

uniqueID

)

center of the tile in STAR coordinate system

Parameters

uniqueID

identifier of the tile = sign*(100*PP+TT) where sign=+/- for West/East

Definition at line 151 of file StEpdGeom.cxx.

TVector3 StEpdGeom::TileCenter	(	short	position,
		short	tilenumber,
		short	eastwest
	)

center of the tile in STAR coordinate system

Parameters

position	position of supersector [1,12]
tilenumber	tile on supsersector [1,31] east (-1) or west (+1) wheel

Definition at line 155 of file StEpdGeom.cxx.

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

• StEpdUtil/StEpdGeom.h
• StEpdUtil/StEpdGeom.cxx