1 /*
2 * Encapsulate results of a 2 point circle fit
3 */
4
5 package org.lcsim.fit.twopointcircle;
6
7 /**
8 * @author Richard Partridge
9 */
10 public class TwoPointCircleFit {
11
12 private double _xc;
13 private double _yc;
14 private double _rc;
15 private boolean _cw;
16 private double _s1;
17 private double _s2;
18
19 /**
20 * Fully qualified constructor.
21 *
22 * @param xc x coordinate of circle center
23 * @param yc y coordinate of circle center
24 * @param rc circle radius
25 * @param cw true if the closest hit to the DCA is in the clockwise direction
26 * @param s1 arc length from the DCA to the first hit
27 * @param s2 arc length from the DCA to the second hit
28 */
29 public TwoPointCircleFit(double xc, double yc, double rc, boolean cw, double s1, double s2) {
30 _xc = xc;
31 _yc = yc;
32 _rc = rc;
33 _cw = cw;
34 _s1 = s1;
35 _s2 = s2;
36 }
37
38 /**
39 * Return the x coordinate of the circle center.
40 *
41 * @return x coordinate of the circle center
42 */
43 public double xc() {
44 return _xc;
45 }
46
47 /**
48 * Return the y coordinate of the circle center.
49 *
50 * @return y coordinate of the circle center
51 */
52 public double yc() {
53 return _yc;
54 }
55
56 /**
57 * Return the radius of the circle.
58 *
59 * @return circle radius
60 */
61 public double rc() {
62 return _rc;
63 }
64
65 /**
66 * Return true if the closest hit to the DCA is in a clockwise direction
67 * relative to the the DCA
68 *
69 * @return true if hits are cw
70 */
71 public boolean cw() {
72 return _cw;
73 }
74
75 /**
76 * Return the arc length to the first hit.
77 *
78 * @return arc length to the first hit
79 */
80 public double s1() {
81 return _s1;
82 }
83
84 /**
85 * Return the arc length to the second hit.
86 *
87 * @return arc length to the second hit.
88 */
89 public double s2() {
90 return _s2;
91 }
92 }