1 package org.lcsim.recon.vertexing.billoir;
2 /**
3 * @version $Id: Perigee.java,v 1.2 2006/03/28 23:50:27 jstrube Exp $
4 */
5 public class Perigee
6 {
7 //attributes
8
9 private double[] _par;
10 // 0 : epsilon (impact par. in xy projection, with sign)
11 // 1 : z coordinate
12 // 2 : theta angle
13 // 3 : phi angle
14 // 4 : 1/r (r = radius of curvature, with sign)
15 private double[] _cov; // cov(0:15) : covariance matrix of par (in lower diagonal form)
16 private double[] _wgt; // wgt(0:15) : weight matrix of par (inverse of cov)
17
18 public Perigee( double[] par, double[] cov, double[] wgt)
19 {
20 _par = new double[5];
21 System.arraycopy(par,0,_par,0,5);
22 _cov = new double[15];
23 System.arraycopy(cov,0,_cov,0,15);
24 _wgt = new double[15];
25 System.arraycopy(wgt,0,_wgt,0,15);
26 }
27
28 public double[] par()
29 {
30 return _par;
31 }
32
33 public double[] cov()
34 {
35 return _cov;
36 }
37
38 public double[] wgt()
39 {
40 return _wgt;
41 }
42 }