com.bbn.openmap.proj
Class Ellipsoid

java.lang.Object
  com.bbn.openmap.proj.Ellipsoid

public class Ellipsoid
extends java.lang.Object

A class representing a reference Ellipsoid for UTM calculations.

Adapted to Java by Colin Mummery (colin_mummery@agilent.com) from C++ code by Chuck Gantz (chuck.gantz@globalstar.com).

See http://en.wikipedia.org/wiki/Figure_of_the_Earth

Field Summary

static Ellipsoid	AIRY "Airy"
static Ellipsoid	AUSTRALIAN_NATIONAL "Australian National"
static Ellipsoid	BESSEL_1841 "Bessel 1841"
static Ellipsoid	BESSEL_1841_NAMIBIA "Bessel 1841 (Nambia) "
static Ellipsoid	CLARKE_1866 "Clarke 1866"
static Ellipsoid	CLARKE_1880 "Clarke 1880"
double	ecc The ellipsoid's eccentricity.
double	eccsq The square of this ellipsoid's eccentricity.
static Ellipsoid	EVEREST "Everest"
static Ellipsoid	FISHER_1960_MERCURY "Fischer 1960 (Mercury) "
static Ellipsoid	FISHER_1968 "Fischer 1968"
static Ellipsoid	GRS_1967 "GRS 1967"
static Ellipsoid	GRS_1980 "GRS 1980"
static Ellipsoid	HELMERT_1906 "Helmert 1906"
static Ellipsoid	HOUGH "Hough"
static Ellipsoid	INTERNATIONAL "International"
static Ellipsoid	KRASSOVSKY "Krassovsky"
static Ellipsoid	MODIFIED_AIRY "Modified Airy"
static Ellipsoid	MODIFIED_EVEREST "Modified Everest"
static Ellipsoid	MODIFIED_FISCHER_1960 "Modified Fischer 1960"
java.lang.String	name The display name for this ellipsoid.
double	polarRadius The polar radius for this ellipsoid.
double	radius The equitorial radius for this ellipsoid.
static Ellipsoid	SOUTH_AMERICAN_1969 "South American 1969"
static Ellipsoid	WGS_60 "WGS 60"
static Ellipsoid	WGS_66 "WGS 66"
static Ellipsoid	WGS_72 "WGS-72"
static Ellipsoid	WGS_84 "WGS-84"

Constructor Summary

Ellipsoid(java.lang.String name, double radius, double eccsq)
Constructs a new Ellipsoid instance.

Ellipsoid(java.lang.String name, double equitorialRadius, double ecc, double eccsq, double polarRadius)
Constructs a new Ellipsoid instance.

Method Summary

static Ellipsoid[]	getAllEllipsoids() Returns an array of all available ellipsoids in alphabetical order by name.
static Ellipsoid	getByName(java.lang.String name) Given the name of an Ellipsoid, find the object for it out of the possible selections.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

AIRY

public static final Ellipsoid AIRY

"Airy"

AUSTRALIAN_NATIONAL

public static final Ellipsoid AUSTRALIAN_NATIONAL

"Australian National"

BESSEL_1841

public static final Ellipsoid BESSEL_1841

"Bessel 1841"

BESSEL_1841_NAMIBIA

public static final Ellipsoid BESSEL_1841_NAMIBIA

"Bessel 1841 (Nambia) "

CLARKE_1866

public static final Ellipsoid CLARKE_1866

"Clarke 1866"

CLARKE_1880

public static final Ellipsoid CLARKE_1880

"Clarke 1880"

EVEREST

public static final Ellipsoid EVEREST

"Everest"

FISHER_1960_MERCURY

public static final Ellipsoid FISHER_1960_MERCURY

"Fischer 1960 (Mercury) "

FISHER_1968

public static final Ellipsoid FISHER_1968

"Fischer 1968"

GRS_1967

public static final Ellipsoid GRS_1967

"GRS 1967"

GRS_1980

public static final Ellipsoid GRS_1980

"GRS 1980"

HELMERT_1906

public static final Ellipsoid HELMERT_1906

"Helmert 1906"

HOUGH

public static final Ellipsoid HOUGH

"Hough"

INTERNATIONAL

public static final Ellipsoid INTERNATIONAL

"International"

KRASSOVSKY

public static final Ellipsoid KRASSOVSKY

"Krassovsky"

MODIFIED_AIRY

public static final Ellipsoid MODIFIED_AIRY

"Modified Airy"

MODIFIED_EVEREST

public static final Ellipsoid MODIFIED_EVEREST

"Modified Everest"

MODIFIED_FISCHER_1960

public static final Ellipsoid MODIFIED_FISCHER_1960

"Modified Fischer 1960"

SOUTH_AMERICAN_1969

public static final Ellipsoid SOUTH_AMERICAN_1969

"South American 1969"

WGS_60

public static final Ellipsoid WGS_60

"WGS 60"

WGS_66

public static final Ellipsoid WGS_66

"WGS 66"

WGS_72

public static final Ellipsoid WGS_72

"WGS-72"

WGS_84

public static final Ellipsoid WGS_84

"WGS-84"

name

public final java.lang.String name

The display name for this ellipsoid.

radius

public final double radius

The equitorial radius for this ellipsoid.

polarRadius

public final double polarRadius

The polar radius for this ellipsoid.

ecc

public final double ecc

The ellipsoid's eccentricity.

eccsq

public final double eccsq

The square of this ellipsoid's eccentricity.

Constructor Detail

Ellipsoid

public Ellipsoid(java.lang.String name,
                 double radius,
                 double eccsq)

Constructs a new Ellipsoid instance.

Parameters:

radius - The earth radius for this ellipsoid.

eccsq - The square of the eccentricity for this ellipsoid.

Ellipsoid

public Ellipsoid(java.lang.String name,
                 double equitorialRadius,
                 double ecc,
                 double eccsq,
                 double polarRadius)

Constructs a new Ellipsoid instance.

Parameters:

name - The name of the ellipsoid.

equitorialRadius - The earth equitorial radius for this ellipsoid.

ecc - The eccentricity for this ellipsoid.

eccsq - The square of the eccentricity for this ellipsoid.

polarRadius - The earth polar radius for this ellipsoid.

Method Detail

getAllEllipsoids

public static Ellipsoid[] getAllEllipsoids()

Returns an array of all available ellipsoids in alphabetical order by name.

Returns:

An Ellipsoid[] array containing all the available ellipsoids

getByName

public static Ellipsoid getByName(java.lang.String name)

Given the name of an Ellipsoid, find the object for it out of the possible selections. Returns null if the Ellipsoid isn't found.

Parameters:

name -

Returns:

Ellipsoid for given name, null if not found.

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class java.lang.Object

Returns:

String representation