org.orekit.models.earth.tessellation

Class AlongTrackAiming

java.lang.Object

org.orekit.models.earth.tessellation.AlongTrackAiming

All Implemented Interfaces:

TileAiming

public class AlongTrackAiming
extends Object
implements TileAiming

Class used to orient tiles along an orbit track.

Author:

Luc Maisonobe

See Also:

ConstantAzimuthAiming

Constructor Summary

Constructors

Constructor and Description
AlongTrackAiming(OneAxisEllipsoid ellipsoid, Orbit orbit, boolean isAscending) Simple constructor.

Method Summary

Modifier and Type	Method and Description
Vector3D	alongTileDirection(Vector3D point, GeodeticPoint gp) Find the along tile direction for tessellation at specified point.

Methods inherited from class java.lang.Object

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

Constructor Detail

AlongTrackAiming

public AlongTrackAiming(OneAxisEllipsoid ellipsoid,
                        Orbit orbit,
                        boolean isAscending)
                 throws OrekitException

Simple constructor.

Parameters:

ellipsoid - ellipsoid body on which the zone is defined

orbit - orbit along which tiles should be aligned

isAscending - indicator for zone tiling with respect to ascending or descending orbits

Throws:

OrekitException - if some frame conversion fails

Method Detail

alongTileDirection

public Vector3D alongTileDirection(Vector3D point,
                                   GeodeticPoint gp)
                            throws OrekitException

Find the along tile direction for tessellation at specified point.

Specified by:

alongTileDirection in interface TileAiming

Parameters:

point - point on the ellipsoid (Cartesian coordinates)

gp - point on the ellipsoid (geodetic coordinates)

Returns:

normalized along tile direction

Throws:

OrekitException - if direction cannot be estimated