Package org.jlab.geom.component

Class DriftChamberWire

java.lang.Object

org.jlab.geom.abs.AbstractComponent

org.jlab.geom.component.PrismaticComponent

org.jlab.geom.component.DriftChamberWire

All Implemented Interfaces:

Component, Transformable, Showable

public class DriftChamberWire
extends PrismaticComponent

A drift chamber wire.

A Line3D representing the sense wire itself can be obtained via PrismaticComponent.getLine(). The Point3D at the intersection of the wire and the midplane of the drift chamber can be obtained via AbstractComponent.getMidpoint().

The volume of a DriftChamberWire is the region enclosed by the six field wires surrounding the sense wire. Consequently, this volume is a hexagonal volume bounded by two planes. Line3D objects representing the field wires can be obtained via getVolumeEdge(int index) where index is in the range [12, 17].

For convenience, all DriftChamberWires should be constructed such that the direction of the wire's line and the direction from the first hexagon to the second hexagon given in the constructor point clockwise aground the z-axis in any of the standard coordinate systems (for information about coordinate systems see Factory).

For more information see PrismaticComponent.

Author:

jnhankins

Constructor Summary

Constructors

Constructor	Description
DriftChamberWire(int componentId, Point3D midpoint, Line3D line, boolean flipReadoutDirection, List<Point3D> botHex, List<Point3D> topHex)	Constructs a new DriftChamberWire from the given parameters.

Method Summary

Modifier and Type	Method	Description
String	getType()	Returns "Drift Chamber Wire".

Methods inherited from class org.jlab.geom.component.PrismaticComponent

getDirection, getLength, getLine, getVolumeIntersection, onRotateX, onRotateY, onRotateZ, onTranslateXYZ

Methods inherited from class org.jlab.geom.abs.AbstractComponent

addVolumeEdge, addVolumePoint, addVolumeTriangleFace, getComponentId, getMidpoint, getNumVolumeEdges, getNumVolumePoints, getVolumeCrossSection, getVolumeEdge, getVolumePoint, getVolumeShape, rotateX, rotateY, rotateZ, show, toString, translateXYZ

Methods inherited from class java.lang.Object

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

Constructor Details

DriftChamberWire

public DriftChamberWire(int componentId,
 Point3D midpoint,
 Line3D line,
 boolean flipReadoutDirection,
 List<Point3D> botHex,
 List<Point3D> topHex)

Constructs a new DriftChamberWire from the given parameters.

Though not strictly required, for convenience, all DriftChamberWires should be constructed such that the direction of the wire's line and the direction from the first hexagon to the second hexagon given in the constructor point clockwise aground the z-axis in any of the standard coordinate systems (for information about coordinate systems see Factory).

Parameters:

componentId - the component id

midpoint - the midpoint of the wire

line - the line representing the wire

flipReadoutDirection - if true the direction will point from topHex to botHex instead of from botHex to topHex

botHex - the first convex hexagon whose points represent the origin points of the field wires

topHex - the second convex hexagon whose points represent the end points of the field wires

Method Details

getType

public String getType()

Returns "Drift Chamber Wire".

Returns:

"Drift Chamber Wire"