org.gavaghan.geodesy

Class Ellipsoid

java.lang.Object

org.gavaghan.geodesy.Ellipsoid

All Implemented Interfaces:

Serializable

public class Ellipsoid
extends Object
implements Serializable

Encapsulation of an ellipsoid, and declaration of common reference ellipsoids.

Author:

Mike Gavaghan

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Ellipsoid	ANS The ANS ellipsoid.
static Ellipsoid	Clarke1858 The Clarke1858 ellipsoid.
static Ellipsoid	Clarke1880 The Clarke1880 ellipsoid.
static Ellipsoid	GRS67 The GRS67 ellipsoid.
static Ellipsoid	GRS80 The GRS80 ellipsoid.
static Ellipsoid	Sphere A spherical "ellipsoid".
static Ellipsoid	WGS72 The WGS72 ellipsoid.
static Ellipsoid	WGS84 The WGS84 ellipsoid.

Method Summary

Modifier and Type	Method and Description
static Ellipsoid	fromAAndF(double semiMajor, double flattening) Build an Ellipsoid from the semi major axis measurement and the flattening.
static Ellipsoid	fromAAndInverseF(double semiMajor, double inverseFlattening) Build an Ellipsoid from the semi major axis measurement and the inverse flattening.
double	getFlattening() Get flattening ratio.
double	getInverseFlattening() Get inverse flattening ratio.
double	getSemiMajorAxis() Get semi-major axis.
double	getSemiMinorAxis() Get semi-minor axis.

Methods inherited from class java.lang.Object

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

Field Detail

WGS84

public static final Ellipsoid WGS84

The WGS84 ellipsoid.

GRS80

public static final Ellipsoid GRS80

The GRS80 ellipsoid.

GRS67

public static final Ellipsoid GRS67

The GRS67 ellipsoid.

ANS

public static final Ellipsoid ANS

The ANS ellipsoid.

WGS72

public static final Ellipsoid WGS72

The WGS72 ellipsoid.

Clarke1858

public static final Ellipsoid Clarke1858

The Clarke1858 ellipsoid.

Clarke1880

public static final Ellipsoid Clarke1880

The Clarke1880 ellipsoid.

Sphere

public static final Ellipsoid Sphere

A spherical "ellipsoid".

Method Detail

fromAAndInverseF

public static Ellipsoid fromAAndInverseF(double semiMajor,
                                         double inverseFlattening)

Build an Ellipsoid from the semi major axis measurement and the inverse flattening.

Parameters:

semiMajor - semi major axis (meters)

inverseFlattening - inverse flattening ratio

Returns:

a new Ellipsoid instance

fromAAndF

public static Ellipsoid fromAAndF(double semiMajor,
                                  double flattening)

Build an Ellipsoid from the semi major axis measurement and the flattening.

Parameters:

semiMajor - semi major axis (meters)

flattening - flattening ratio

Returns:

a new Ellipsoid instance

getSemiMajorAxis

public double getSemiMajorAxis()

Get semi-major axis.

Returns:

semi-major axis (in meters).

getSemiMinorAxis

public double getSemiMinorAxis()

Get semi-minor axis.

Returns:

semi-minor axis (in meters).

getFlattening

public double getFlattening()

Get flattening ratio.

Returns:

flattening ratio

getInverseFlattening

public double getInverseFlattening()

Get inverse flattening ratio.

Returns:

inverse flattening ratio