org.lcsim.recon.tracking.gtrfit

Class SimpleGTrackFitter

java.lang.Object

org.lcsim.recon.tracking.gtrfit.SimpleGTrackFitter

public class SimpleGTrackFitter
extends Object

A class which fits a GTrack.

Version:

1.0

Author:

Norman A. Graf

Field Summary

Fields

Modifier and Type	Field and Description
private double	_chsq_max
private AddFitter	_fitter
private int	_order
private Propagator	_prop
private static int	BACKWARD
private static double	ERRFAC
private static int	FORWARD

Constructor Summary

Constructors

Constructor and Description
SimpleGTrackFitter(Propagator prop, int order, double chsq_max) Construct an instance from a propagator, the order in which to fit, and a chi-square value on which to cut.

Method Summary

Methods

Modifier and Type	Method and Description
int	fit(GTrack gtr) Fit a track.
String	toString() output stream

Methods inherited from class java.lang.Object

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

Field Detail

FORWARD

private static final int FORWARD

See Also:

Constant Field Values

BACKWARD

private static final int BACKWARD

See Also:

Constant Field Values

ERRFAC

private static final double ERRFAC

See Also:

Constant Field Values

_prop

private Propagator _prop

_order

private int _order

_fitter

private AddFitter _fitter

_chsq_max

private double _chsq_max

Constructor Detail

SimpleGTrackFitter

public SimpleGTrackFitter(Propagator prop,
                  int order,
                  double chsq_max)

Construct an instance from a propagator, the order in which to fit, and a chi-square value on which to cut. order = fit order (1 for going out, -1 for going in)

Parameters:

prop - The Propagator to use in the fit.

order - The order in wich to fit (1 for going out, -1 for going in).

chsq_max - The maximum value of chi-square to allow for a hit.

Method Detail

fit

public int fit(GTrack gtr)

Fit a track.

Parameters:

gtr - The GTrack to fit.

Returns:

0 for successful fit.

toString

public String toString()

output stream

Overrides:

toString in class Object

Returns:

A String representation of this instance.