1 /*
2 * Copyright (c) 2003-2008 by Cosylab d. d.
3 *
4 * This file is part of CosyBeans-Common.
5 *
6 * CosyBeans-Common is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * CosyBeans-Common is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with CosyBeans-Common. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 package com.cosylab.gui.components.numberfield;
21
22 /**
23 * Visualize double value in radians by converting it to hours and displays it
24 * in format XX:XX:XX.
25 *
26 * @author <a href="mailto:igor.kriznar@cosylab.com">Igor Kriznar</a>
27 */
28 public class Rad2HMSNumberDescriptor extends HMSNumberDescriptor
29 {
30 /**
31 * Converts angle in radians to angle in hours. 24 hours is 2PI radians.
32 *
33 * @param rad angle in radians
34 *
35 * @return angle in hours
36 */
37 public final static double toHours(double rad)
38 {
39 return rad * 12.0 / Math.PI;
40 }
41
42 /**
43 * Converts angle in hours to angle in radians. 24 hours is 2PI radians.
44 *
45 * @param hour angle in hours
46 *
47 * @return angle in radians
48 */
49 public static double toRadians(double hour)
50 {
51 return hour / 12.0 * Math.PI;
52 }
53
54 /**
55 * @see NumberDescriptor
56 */
57 public final static String NAME = "Radians as hours Visualization";
58
59 /**
60 * @see NumberDescriptor
61 */
62 public final static String DESCRIPTION = "Converts double value from radians to hours and diplays in degree format: XX:XX:XX.";
63
64 /**
65 * Constructs a new Rad2HMSNNumberDescritptor.
66 *
67 */
68 public Rad2HMSNumberDescriptor()
69 {
70 super();
71 }
72
73 /* (non-Javadoc)
74 * @see com.cosylab.gui.components.numberfield.AngleNumberDescriptor#printString(java.lang.Number)
75 */
76 public String printString(Number number)
77 {
78 return super.printString(new Double(toHours(number.doubleValue())));
79 }
80
81 /* (non-Javadoc)
82 * @see com.cosylab.gui.components.numberfield.AngleNumberDescriptor#parseNumber(java.lang.String)
83 */
84 public Number parseNumber(String number)
85 {
86 Number n = super.parseNumber(number);
87
88 if (n == null) {
89 return n;
90 }
91
92 return new Double(toRadians(n.doubleValue()));
93 }
94 }
95
96 /* __oOo__ */