ucar.unidata.geoloc

Class Earth

java.lang.Object

ucar.unidata.geoloc.Earth

Direct Known Subclasses:

EarthEllipsoid

@Immutable
public class Earth
extends Object

Defines the shape of the earth ellipsoid.

Author:

Russ Rew

Field Summary

Fields

Modifier and Type	Field and Description
protected double	eccentricity
protected double	eccentricitySquared
protected double	equatorRadius
protected double	flattening
protected String	name
protected double	poleRadius

Constructor Summary

Constructors

Constructor and Description
Earth() Spherical earth with canonical radius.
Earth(double radius) Create a spherical earth.
Earth(double equatorRadius, double poleRadius, double reciprocalFlattening) Create an ellipsoidal earth.
Earth(double equatorRadius, double poleRadius, double reciprocalFlattening, String name) Create an ellipsoidal earth with a name.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
double	getEccentricity() Get the Eccentricity property.
double	getEccentricitySquared() Get the EccentricitySquared property.
double	getEquatorRadius() Get the EquatorRadius property.
double	getFlattening() Get the Flattening property.
double	getMajor() Get the equatorial radius (semimajor axis) of the earth, in meters.
double	getMinor() Get the polar radius (semiminor axis) of the earth, in meters.
String	getName() Get the Name property.
double	getPoleRadius() Get the PoleRadius property.
static double	getRadius() Get canonical radius of spherical earth, in meters
int	hashCode()
boolean	isSpherical()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

eccentricity

protected final double eccentricity

eccentricitySquared

protected final double eccentricitySquared

equatorRadius

protected final double equatorRadius

poleRadius

protected final double poleRadius

flattening

protected final double flattening

name

protected final String name

Constructor Detail

Earth

public Earth()

Spherical earth with canonical radius.

Earth

public Earth(double radius)

Create a spherical earth.

Parameters:

radius - radius of spherical earth.

Earth

public Earth(double equatorRadius,
     double poleRadius,
     double reciprocalFlattening)

Create an ellipsoidal earth. The reciprocalFlattening is used if not zero, else the poleRadius is used.

Parameters:

equatorRadius - equatorial radius (semimajor axis) in meters, must be specified

poleRadius - polar radius (semiminor axis) in meters

reciprocalFlattening - inverse flattening = 1/flattening = a / (a-b)

Earth

public Earth(double equatorRadius,
     double poleRadius,
     double reciprocalFlattening,
     String name)

Create an ellipsoidal earth with a name.

Parameters:

equatorRadius - equatorial radius (semimajor axis) in meters, must be specified

poleRadius - polar radius (semiminor axis) in meters; if reciprocalFlattening != 0 then this is ignored

reciprocalFlattening - inverse flattening = 1/flattening = a / (a-b); if 0 use the poleRadius to calculate

name - name of the Earth

Method Detail

getRadius

public static double getRadius()

Get canonical radius of spherical earth, in meters

Returns:

canonical radius of spherical earth in meters

isSpherical

public boolean isSpherical()

getMajor

public double getMajor()

Get the equatorial radius (semimajor axis) of the earth, in meters.

Returns:

equatorial radius (semimajor axis) in meters

getMinor

public double getMinor()

Get the polar radius (semiminor axis) of the earth, in meters.

Returns:

polar radius (semiminor axis) in meters

getName

public String getName()

Get the Name property.

Returns:

The Name

getEccentricity

public double getEccentricity()

Get the Eccentricity property.

Returns:

The Eccentricity

getEccentricitySquared

public double getEccentricitySquared()

Get the EccentricitySquared property.

Returns:

The EccentricitySquared

getEquatorRadius

public double getEquatorRadius()

Get the EquatorRadius property.

Returns:

The EquatorRadius

getPoleRadius

public double getPoleRadius()

Get the PoleRadius property.

Returns:

The PoleRadius

getFlattening

public double getFlattening()

Get the Flattening property.

Returns:

The Flattening

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object