org.orekit.attitudes.directions
Class CrossProductDirection

java.lang.Object
  org.orekit.attitudes.directions.CrossProductDirection

All Implemented Interfaces:

IDirection

public class CrossProductDirection
extends Object
implements IDirection

This direction is the cross product of two directions

Since:

3.0

Version:

$Id:

Author:

Delphine Pontisso

Concurrency :

conditionally thread-safe

Concurrency comment :

this class is not thread-safe

Constructor Summary

CrossProductDirection(IDirection direction1, IDirection direction2)
Build a cross product of two directions.

Method Summary

Line	getLine(PVCoordinatesProvider pvCoord, AbsoluteDate date, Frame frame) Provides the line containing the origin (given PV coordinates) and directed by the cross product of directions.
Vector3D	getVector(PVCoordinatesProvider pvCoord, AbsoluteDate date, Frame frame) Provides the cross product of direction1 vector and dirction2 vector.

Methods inherited from class java.lang.Object

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

Constructor Detail

CrossProductDirection

public CrossProductDirection(IDirection direction1,
                             IDirection direction2)

Build a cross product of two directions.

Parameters:

direction1 - first direction

direction2 - second direction

Method Detail

getVector

public Vector3D getVector(PVCoordinatesProvider pvCoord,
                          AbsoluteDate date,
                          Frame frame)
                   throws OrekitException

Provides the cross product of direction1 vector and dirction2 vector.

Specified by:

getVector in interface IDirection

Parameters:

pvCoord - PV coordinates

date - a date

frame - the frame to project the vector's coordinates

Returns:

the direction1 vector cross product with the direction2 vector

Throws:

OrekitException - if one of directions vectors could not be retrieved

getLine

public Line getLine(PVCoordinatesProvider pvCoord,
                    AbsoluteDate date,
                    Frame frame)
             throws OrekitException

Provides the line containing the origin (given PV coordinates) and directed by the cross product of directions.

Specified by:

getLine in interface IDirection

Parameters:

pvCoord - PV coordinates. If null, PVCoordinates.ZERO is considered

date - a date

frame - the expression frame of the line

Returns:

the Line of space containing the origin and direction vector

Throws:

OrekitException - if some frame specific errors occur or if directions vectors could not be retrieved