Package org.orekit.bodies

Class GeodeticPoint

java.lang.Object

org.orekit.bodies.GeodeticPoint

All Implemented Interfaces:

Serializable

public class GeodeticPoint
extends Object
implements Serializable

Point location relative to a 2D body surface.

Instance of this class are guaranteed to be immutable.

Author:

Luc Maisonobe

See Also:

BodyShape, FieldGeodeticPoint, Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static GeodeticPoint	NORTH_POLE	North pole.
static GeodeticPoint	SOUTH_POLE	South pole.

Constructor Summary

Constructors

Constructor	Description
GeodeticPoint(double latitude, double longitude, double altitude)	Build a new instance.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object object)
double	getAltitude()	Get the altitude.
Vector3D	getEast()	Get the direction to the east of point, expressed in parent shape frame.
double	getLatitude()	Get the latitude.
double	getLongitude()	Get the longitude.
Vector3D	getNadir()	Get the direction below the point, expressed in parent shape frame.
Vector3D	getNorth()	Get the direction to the north of point, expressed in parent shape frame.
Vector3D	getSouth()	Get the direction to the south of point, expressed in parent shape frame.
Vector3D	getWest()	Get the direction to the west of point, expressed in parent shape frame.
Vector3D	getZenith()	Get the direction above the point, expressed in parent shape frame.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

NORTH_POLE

public static final GeodeticPoint NORTH_POLE

North pole.

Since:

10.0

SOUTH_POLE

public static final GeodeticPoint SOUTH_POLE

South pole.

Since:

10.0

Constructor Detail

GeodeticPoint

public GeodeticPoint(double latitude,
                     double longitude,
                     double altitude)

Build a new instance. The angular coordinates will be normalized so that the latitude is between ±π/2 and the longitude is between ±π.

Parameters:

latitude - latitude of the point (rad)

longitude - longitude of the point (rad)

altitude - altitude of the point (m)

Method Detail

getLatitude

public double getLatitude()

Get the latitude.

Returns:

latitude, an angular value in the range [-π/2, π/2]

getLongitude

public double getLongitude()

Get the longitude.

Returns:

longitude, an angular value in the range [-π, π]

getAltitude

public double getAltitude()

Get the altitude.

Returns:

altitude

getZenith

public Vector3D getZenith()

Get the direction above the point, expressed in parent shape frame.

The zenith direction is defined as the normal to local horizontal plane.

Returns:

unit vector in the zenith direction

See Also:

getNadir()

getNadir

public Vector3D getNadir()

Get the direction below the point, expressed in parent shape frame.

The nadir direction is the opposite of zenith direction.

Returns:

unit vector in the nadir direction

See Also:

getZenith()

getNorth

public Vector3D getNorth()

Get the direction to the north of point, expressed in parent shape frame.

The north direction is defined in the horizontal plane (normal to zenith direction) and following the local meridian.

Returns:

unit vector in the north direction

See Also:

getSouth()

getSouth

public Vector3D getSouth()

Get the direction to the south of point, expressed in parent shape frame.

The south direction is the opposite of north direction.

Returns:

unit vector in the south direction

See Also:

getNorth()

getEast

public Vector3D getEast()

Get the direction to the east of point, expressed in parent shape frame.

The east direction is defined in the horizontal plane in order to complete direct triangle (east, north, zenith).

Returns:

unit vector in the east direction

See Also:

getWest()

getWest

public Vector3D getWest()

Get the direction to the west of point, expressed in parent shape frame.

The west direction is the opposite of east direction.

Returns:

unit vector in the west direction

See Also:

getEast()

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object