org.orekit.attitudes
Class DirectionTrackingOrientation

java.lang.Object
  org.orekit.attitudes.DirectionTrackingOrientation

All Implemented Interfaces:

IOrientationLaw

public final class DirectionTrackingOrientation
extends Object
implements IOrientationLaw

Since:

1.2

Version:

$Id: DirectionTrackingOrientation.java 13175 2015-05-06 13:44:38Z trapier $

Author:

Julie Anton

Description :

One direction orientation law. This law has to be used within a composed attitude law as a law modifier.

Concurrency :

conditionally thread safe

Concurrency comment :

the IDirection object has to be thread-safe itself

Constructor Summary

DirectionTrackingOrientation(IDirection direction, Vector3D satelliteAxis, Vector3D satelliteFixedAxis)
Constructor.

Method Summary

Rotation

getOrientation(AbsoluteDate date, Frame frame) Gets the rotation defining the orientation with respect to a given frame at a given date.

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectionTrackingOrientation

public DirectionTrackingOrientation(IDirection direction,
                                    Vector3D satelliteAxis,
                                    Vector3D satelliteFixedAxis)

Constructor.

Parameters:

direction - : the direction that has to be followed

satelliteAxis - : satellite axis aligned with the first direction

satelliteFixedAxis - : fixed satellite axis that defines the second direction

Method Detail

getOrientation

public Rotation getOrientation(AbsoluteDate date,
                               Frame frame)
                        throws OrekitException

Description copied from interface: IOrientationLaw

Gets the rotation defining the orientation with respect to a given frame at a given date.

Specified by:

getOrientation in interface IOrientationLaw

Parameters:

date - date

frame - frame

Returns:

the orientation

Throws:

OrekitException - if a problem occurs during frames transformations