traininfoservice/geo/Length.java

// **********************************************************************
// 
// <copyright>
// 
//  BBN Technologies
//  10 Moulton Street
//  Cambridge, MA 02138
//  (617) 873-8000
// 
//  Copyright (C) BBNT Solutions LLC. All rights reserved.
// 
// </copyright>
// **********************************************************************
// 
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/proj/Length.java,v $
// $RCSfile: Length.java,v $
// $Revision: 1.5.2.2 $
// $Date: 2005/08/10 22:45:12 $
// $Author: dietrick $
// 
// **********************************************************************

package dk.thoerup.traininfoservice.geo;

/*
 * Length is a convenience class used for a couple of things. It can
 * be used to specifiy unit type, and can be used for conversion from
 * radians to/from whatever units are represented by the implemented
 * class.
 */
public class Length {

    /** Miles, in WGS 84 spherical earth model units. */
    public final static Length MILE = new Length("mile", "miles", Planet.wgs84_earthEquatorialCircumferenceMiles_D);
    /** Feet, in WGS 84 spherical earth model units. */
    public final static Length FEET = new Length("feet", "feet", Planet.wgs84_earthEquatorialCircumferenceMiles_D * 5280.0);
    /** Meters, in WGS 84 Spherical earth model units. */
    public final static Length METER = new Length("meter", "m", Planet.wgs84_earthEquatorialCircumferenceMeters_D);
    /** Kilometers, in WGS 84 Spherical earth model units. */
    public final static Length KM = new Length("kilometer", "km", Planet.wgs84_earthEquatorialCircumferenceKM_D);
    /** Nautical Miles, in WGS 84 Spherical earth model units. */
    public final static Length NM = new Length("nautical mile", "nm", Planet.wgs84_earthEquatorialCircumferenceNMiles_D);
    /** Decimal Degrees, in WGS 84 Spherical earth model units. */
    public final static Length DECIMAL_DEGREE = new Length("decimal degree", "deg", 360.0);
    /** Radians, in terms of a spherical earth. */
    public final static Length RADIAN = new Length("radian", "rad", MoreMath.TWO_PI_D);
    /** Data Mile, in WGS 84 spherical earth model units. */
    public final static Length DM = new Length("datamile", "dm", Planet.wgs84_earthEquatorialCircumferenceMiles_D * 5280.0 / 6000.0);

    /** Unit/radians */
    protected final double constant;
    protected final String name;
    protected final String abbr;
    protected double unitEquatorCircumference;
    

    /**
     * Create a Length, with a name an the number of it's units that
     * go around the earth at its equator. The name and abbreviation
     * are converted to lower case for consistency.
     */
    public Length(String name, String abbr, double unitEquatorCircumference) {
        this.name = name;
        this.unitEquatorCircumference = unitEquatorCircumference;
        this.constant = unitEquatorCircumference / MoreMath.TWO_PI_D;
        this.abbr = abbr.toLowerCase().intern();
    }

    /**
     * Given a number of units provided by this Length, convert to a
     * number of radians.
     */
    public float toRadians(float numUnits) {

        return numUnits / (float) constant;
    }

    public double toRadians(double numUnits) {


        return numUnits / constant;
    }

    /**
     * Given a number of radians, convert to the number of units
     * represented by this length.
     */
    public float fromRadians(float numRadians) {


        return numRadians * (float) constant;
    }

    /**
     * Given a number of radians, convert to the number of units
     * represented by this length.
     */
    public double fromRadians(double numRadians) {


        return numRadians * constant;
    }

    /**
     * Return the name for this length type.
     */
    public String toString() {
        return name;
    }

    /**
     * Return the abbreviation for this length type.
     */
    public String getAbbr() {
        return abbr;
    }

    /**
     * Get a list of the Lengths currently defined as static
     * implementations of this class.
     */
    public static Length[] getAvailable() {
        return new Length[] { METER, KM, FEET, MILE, DM, NM, DECIMAL_DEGREE };
    }

    /**
     * Get the Length object with the given name or abbreviation. If
     * nothing exists with that name, then return null. The lower case
     * version of the name or abbreviation is checked against the
     * available options.
     */
    public static Length get(String name) {
        Length[] choices = getAvailable();

        for (int i = 0; i < choices.length; i++) {
            if (name.toLowerCase().intern() == choices[i].toString()
                    || name.toLowerCase().intern() == choices[i].getAbbr()) {
                return choices[i];
            }
        }
        return null;
    }
}
1	// **********************************************************************
2	//
3	// <copyright>
4	//
5	// BBN Technologies
6	// 10 Moulton Street
7	// Cambridge, MA 02138
8	// (617) 873-8000
9	//
10	// Copyright (C) BBNT Solutions LLC. All rights reserved.
11	//
12	// </copyright>
13	// **********************************************************************
14	//
15	// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/proj/Length.java,v $
16	// $RCSfile: Length.java,v $
17	// $Revision: 1.5.2.2 $
18	// $Date: 2005/08/10 22:45:12 $
19	// $Author: dietrick $
20	//
21	// **********************************************************************
22
23	package dk.thoerup.traininfoservice.geo;
24
25	/*
26	* Length is a convenience class used for a couple of things. It can
27	* be used to specifiy unit type, and can be used for conversion from
28	* radians to/from whatever units are represented by the implemented
29	* class.
30	*/
31	public class Length {
32
33	/** Miles, in WGS 84 spherical earth model units. */
34	public final static Length MILE = new Length("mile", "miles", Planet.wgs84_earthEquatorialCircumferenceMiles_D);
35	/** Feet, in WGS 84 spherical earth model units. */
36	public final static Length FEET = new Length("feet", "feet", Planet.wgs84_earthEquatorialCircumferenceMiles_D * 5280.0);
37	/** Meters, in WGS 84 Spherical earth model units. */
38	public final static Length METER = new Length("meter", "m", Planet.wgs84_earthEquatorialCircumferenceMeters_D);
39	/** Kilometers, in WGS 84 Spherical earth model units. */
40	public final static Length KM = new Length("kilometer", "km", Planet.wgs84_earthEquatorialCircumferenceKM_D);
41	/** Nautical Miles, in WGS 84 Spherical earth model units. */
42	public final static Length NM = new Length("nautical mile", "nm", Planet.wgs84_earthEquatorialCircumferenceNMiles_D);
43	/** Decimal Degrees, in WGS 84 Spherical earth model units. */
44	public final static Length DECIMAL_DEGREE = new Length("decimal degree", "deg", 360.0);
45	/** Radians, in terms of a spherical earth. */
46	public final static Length RADIAN = new Length("radian", "rad", MoreMath.TWO_PI_D);
47	/** Data Mile, in WGS 84 spherical earth model units. */
48	public final static Length DM = new Length("datamile", "dm", Planet.wgs84_earthEquatorialCircumferenceMiles_D * 5280.0 / 6000.0);
49
50	/** Unit/radians */
51	protected final double constant;
52	protected final String name;
53	protected final String abbr;
54	protected double unitEquatorCircumference;
55
56
57	/**
58	* Create a Length, with a name an the number of it's units that
59	* go around the earth at its equator. The name and abbreviation
60	* are converted to lower case for consistency.
61	*/
62	public Length(String name, String abbr, double unitEquatorCircumference) {
63	this.name = name;
64	this.unitEquatorCircumference = unitEquatorCircumference;
65	this.constant = unitEquatorCircumference / MoreMath.TWO_PI_D;
66	this.abbr = abbr.toLowerCase().intern();
67	}
68
69	/**
70	* Given a number of units provided by this Length, convert to a
71	* number of radians.
72	*/
73	public float toRadians(float numUnits) {
74
75	return numUnits / (float) constant;
76	}
77
78	public double toRadians(double numUnits) {
79
80
81	return numUnits / constant;
82	}
83
84	/**
85	* Given a number of radians, convert to the number of units
86	* represented by this length.
87	*/
88	public float fromRadians(float numRadians) {
89
90
91	return numRadians * (float) constant;
92	}
93
94	/**
95	* Given a number of radians, convert to the number of units
96	* represented by this length.
97	*/
98	public double fromRadians(double numRadians) {
99
100
101	return numRadians * constant;
102	}
103
104	/**
105	* Return the name for this length type.
106	*/
107	public String toString() {
108	return name;
109	}
110
111	/**
112	* Return the abbreviation for this length type.
113	*/
114	public String getAbbr() {
115	return abbr;
116	}
117
118	/**
119	* Get a list of the Lengths currently defined as static
120	* implementations of this class.
121	*/
122	public static Length[] getAvailable() {
123	return new Length[] { METER, KM, FEET, MILE, DM, NM, DECIMAL_DEGREE };
124	}
125
126	/**
127	* Get the Length object with the given name or abbreviation. If
128	* nothing exists with that name, then return null. The lower case
129	* version of the name or abbreviation is checked against the
130	* available options.
131	*/
132	public static Length get(String name) {
133	Length[] choices = getAvailable();
134
135	for (int i = 0; i < choices.length; i++) {
136	if (name.toLowerCase().intern() == choices[i].toString()
137	\|\| name.toLowerCase().intern() == choices[i].getAbbr()) {
138	return choices[i];
139	}
140	}
141	return null;
142	}
143	}