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	torben	1105	// **********************************************************************
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			}