org.lcsim.recon.tracking.vsegment.geom.sensortypes

Class Hexagon

java.lang.Object

org.lcsim.recon.tracking.vsegment.geom.sensortypes.Hexagon

All Implemented Interfaces:

SensorType

public class Hexagon
extends Object
implements SensorType

This class represents a hexagonal sensor with strips parallel to its side. The reference frame origin is at the center of the sensor.

Version:

$Id: Hexagon.java,v 1.1 2008/12/06 21:53:44 onoprien Exp $

Author:

D.Onoprienko

Field Summary

Fields

Modifier and Type	Field and Description
protected double	_halfThick
protected double	_halfWidth
protected int	_nDivU
protected double	_pitch
protected double	_side
protected double	COSPI6
protected double	TANPI6

Constructor Summary

Constructors

Constructor and Description
Hexagon(double sideLength, double thickness, int nU) Create Hexagon instance.

Method Summary

Methods

Modifier and Type	Method and Description
Hep3Vector	getChannelDimensions(int channelID) Returns dimensions of the given channel along U, V, W.
int	getChannelID(Hep3Vector point) Converts a point in local sensor coordinates to channel ID.
Hep3Vector	getChannelPosition(int channelID) Returns position of the center of the given channel, in local sensor coordinates.
int	getHitDimension() Returns the dimension of a measurement by this type of sensor (1 for strips, 2 for pixels, etc).
int	getMaxChannelID() Returns maximum possible channel ID on this sensor.
int	getNeighbor(int channelID, int shiftU, int shiftV) Returns channel ID of a neighbor channel.
List<Integer>	getNeighbors(int channelID) Returns array of IDs of all immediate neighbor channels.
boolean	isValidChannelID(int channelID) Returns true if channel with this ID exists on this sensor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_side

protected double _side

_halfWidth

protected double _halfWidth

_halfThick

protected double _halfThick

_pitch

protected double _pitch

_nDivU

protected int _nDivU

COSPI6

protected final double COSPI6

TANPI6

protected final double TANPI6

Constructor Detail

Hexagon

public Hexagon(double sideLength,
       double thickness,
       int nU)

Create Hexagon instance.

Parameters:

sideLength - Length of the hexagon side.

thickness - Thickness of the sensor.

nU - Number of divisions along U (measurement direction, perpendicular to strips).

Method Detail

getChannelID

public int getChannelID(Hep3Vector point)

Converts a point in local sensor coordinates to channel ID. Returns -1 if the point is outside of sensor sensitive area.

Specified by:

getChannelID in interface SensorType

getChannelPosition

public Hep3Vector getChannelPosition(int channelID)

Returns position of the center of the given channel, in local sensor coordinates.

Specified by:

getChannelPosition in interface SensorType

getMaxChannelID

public int getMaxChannelID()

Returns maximum possible channel ID on this sensor.

Specified by:

getMaxChannelID in interface SensorType

isValidChannelID

public boolean isValidChannelID(int channelID)

Returns true if channel with this ID exists on this sensor.

Specified by:

isValidChannelID in interface SensorType

getChannelDimensions

public Hep3Vector getChannelDimensions(int channelID)

Returns dimensions of the given channel along U, V, W.

Specified by:

getChannelDimensions in interface SensorType

getHitDimension

public int getHitDimension()

Returns the dimension of a measurement by this type of sensor (1 for strips, 2 for pixels, etc). Hexagon always contain strips so this method always returns 1.

Specified by:

getHitDimension in interface SensorType

getNeighbor

public int getNeighbor(int channelID,
              int shiftU,
              int shiftV)

Returns channel ID of a neighbor channel. Returns -1 if the channel defined by shifts does not exist on this sensor.

Specified by:

getNeighbor in interface SensorType

Parameters:

channelID - ID of the original channel

shiftV - move in V direction by shiftV channels

shiftU - move in U direction by shiftU channels

getNeighbors

public List<Integer> getNeighbors(int channelID)

Returns array of IDs of all immediate neighbor channels.

Specified by:

getNeighbors in interface SensorType