org.lcsim.recon.vertexing.billoir

Class BilloirFitter

java.lang.Object

org.lcsim.recon.vertexing.billoir.BilloirFitter

All Implemented Interfaces:

VertexFitter

public class BilloirFitter
extends Object
implements VertexFitter

Field Summary

Fields

Modifier and Type	Field and Description
private double	_bField

Constructor Summary

Constructors

Constructor and Description
BilloirFitter(double bField)

Method Summary

Methods

Modifier and Type	Method and Description
private Vertex	fit(int ntrk, boolean fitwb, boolean[] invtx, double[][] par, double[][] wgt, double[] xyz)
Vertex	fit(List<Track> tracks, SpacePoint initialPosition, boolean withBeamConstraint)
private double[]	flattenMatrix(double[][] matrix)
static double	fmod1(double value, double range)
private double	fwdch2(double[] wgt, double d1, double d2, double d3, double d4, double d5)
private double[][]	getJacobi(double[] old) Conversion matrix from org.lcsim track parameters (old) to internal parameters
Perigee	perigee(double[] rawdat, double xb, double yb)
Vertex	pxfvtx(int ntrk, boolean fitwb, boolean[] invtx, double[][] par, double[][] wgt, double[] xyz)
private double[]	pxmi3_old(double[] wgt)
private double[]	pxmi3(double[] wgt)
private double[]	pxmi5(double[] wgt)

Methods inherited from class java.lang.Object

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

Field Detail

_bField

private double _bField

Constructor Detail

BilloirFitter

public BilloirFitter(double bField)

Method Detail

fmod1

public static double fmod1(double value,
           double range)

fit

private Vertex fit(int ntrk,
         boolean fitwb,
         boolean[] invtx,
         double[][] par,
         double[][] wgt,
         double[] xyz)

fit

public Vertex fit(List<Track> tracks,
         SpacePoint initialPosition,
         boolean withBeamConstraint)

Specified by:

fit in interface VertexFitter

getJacobi

private double[][] getJacobi(double[] old)

Conversion matrix from org.lcsim track parameters (old) to internal parameters

flattenMatrix

private double[] flattenMatrix(double[][] matrix)

pxmi5

private double[] pxmi5(double[] wgt)

fwdch2

private double fwdch2(double[] wgt,
            double d1,
            double d2,
            double d3,
            double d4,
            double d5)

perigee

public Perigee perigee(double[] rawdat,
              double xb,
              double yb)

pxmi3

private double[] pxmi3(double[] wgt)

pxmi3_old

private double[] pxmi3_old(double[] wgt)

pxfvtx

public Vertex pxfvtx(int ntrk,
            boolean fitwb,
            boolean[] invtx,
            double[][] par,
            double[][] wgt,
            double[] xyz)