org.orekit.attitudes
Class AttitudeLegLaw

java.lang.Object
  org.orekit.attitudes.AttitudeLegLaw

All Implemented Interfaces:

Serializable, AttitudeLaw, AttitudeProvider

public class AttitudeLegLaw
extends Object
implements AttitudeLaw

This class represents an attitude law version "attitudeLeg", with an interval of validity (whose borders are closed points) and attitude laws outside this interval of validity.

Since:

3.1

Version:

$Id: AttitudeLegLaw.java 15520 2016-03-07 13:25:06Z bignon $

Author:

galpint

See Also:

Serialized Form

Concurrency :

conditionally thread-safe

Concurrency comment :

The use of an AttitudeLegLaw makes it thread-safe only if the two AttitudeLaw and the AttitudeLeg are.

Constructor Summary

AttitudeLegLaw(AttitudeLaw attitudelawBefore, AttitudeLeg attitudeleg, AttitudeLaw attitudelawAfter)
Build an attitude law version "attitudeLeg".

Method Summary

Attitude	getAttitude(Orbit orbit) Compute the attitude corresponding to an orbital state.
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame) Compute the attitude corresponding to an orbital state.
void	setSpinDerivativesComputation(boolean computeSpinDerivatives) Method to activate spin derivative computation.

Methods inherited from class java.lang.Object

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

Constructor Detail

AttitudeLegLaw

public AttitudeLegLaw(AttitudeLaw attitudelawBefore,
                      AttitudeLeg attitudeleg,
                      AttitudeLaw attitudelawAfter)

Build an attitude law version "attitudeLeg". Its interval of validity has closed endpoints. If the interpolation date is contained in the interval of validity of leg, the interpolated attitude is returned according to this law. If the interpolation date is before (resp. after) the interval of validity of leg, the returned interpolated attitude is computed following lawBefore (reps. lawAfter)

Parameters:

attitudelawBefore - : law before interval of validity

attitudeleg - : law during interval of validity

attitudelawAfter - : Law after interval of validity

Method Detail

getAttitude

public Attitude getAttitude(PVCoordinatesProvider pvProv,
                            AbsoluteDate date,
                            Frame frame)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Parameters:

pvProv - local position-velocity provider around current date

date - current date

frame - reference frame from which attitude is computed

Returns:

attitude attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

getAttitude

public Attitude getAttitude(Orbit orbit)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Specified by:

getAttitude in interface AttitudeProvider

Parameters:

orbit - current orbit

Returns:

attitude attitude on the current orbit

Throws:

OrekitException - if attitude cannot be computed

setSpinDerivativesComputation

public void setSpinDerivativesComputation(boolean computeSpinDerivatives)
                                   throws OrekitException

Method to activate spin derivative computation.

Spin derivatives computation applies to lawBefore, leg and lawAfter.

Specified by:

setSpinDerivativesComputation in interface AttitudeProvider

Parameters:

computeSpinDerivatives - true if spin derivatives should be computed

Throws:

OrekitException - if spin derivatives can not be computed