org.orekit.files.ccsds.definitions

Class FrameFacade

java.lang.Object

org.orekit.files.ccsds.definitions.FrameFacade

public class FrameFacade
extends Object

Facade in front of several frames types in CCSDS messages.

Since:

11.0

Author:

Luc Maisonobe, Vincent Cucchietti

Constructor Summary

Constructors

Constructor and Description
FrameFacade(Frame frame, CelestialBodyFrame celestialBodyFrame, OrbitRelativeFrame orbitRelativeFrame, SpacecraftBodyFrame spacecraftBodyFrame, String name) Simple constructor.

Method Summary

Modifier and Type	Method and Description
CelestialBodyFrame	asCelestialBodyFrame() Get the associated celestial body frame.
Frame	asFrame() Get the associated frame tree node.
OrbitRelativeFrame	asOrbitRelativeFrame() Get the associated orbit relative frame.
SpacecraftBodyFrame	asSpacecraftBodyFrame() Get the associated spacecraft body frame.
String	getName() Get the CCSDS name for the frame.
static Transform	getTransform(FrameFacade frameIn, FrameFacade frameOut, Frame inertialPivotFrame, AbsoluteDate date, PVCoordinatesProvider pv) Get the transform between CCSDS frames.
static FrameFacade	map(Frame frame) Map an Orekit frame to a CCSDS frame facade.
static FrameFacade	parse(String name, IERSConventions conventions, boolean simpleEOP, DataContext dataContext, boolean allowCelestial, boolean allowOrbit, boolean allowSpacecraft) Simple constructor.

Methods inherited from class java.lang.Object

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

Constructor Detail

FrameFacade

public FrameFacade(Frame frame,
                   CelestialBodyFrame celestialBodyFrame,
                   OrbitRelativeFrame orbitRelativeFrame,
                   SpacecraftBodyFrame spacecraftBodyFrame,
                   String name)

Simple constructor.

At most one of celestialBodyFrame, orbitRelativeFrame or spacecraftBodyFrame may be non null. They may all be null if frame is unknown, in which case only the name will be available.

Parameters:

frame - reference to node in Orekit frames tree (may be null)

celestialBodyFrame - reference to celestial body centered frame (may be null)

orbitRelativeFrame - reference to orbit-relative frame (may be null)

spacecraftBodyFrame - reference to spacecraft body frame (may be null)

name - name of the frame

Method Detail

asFrame

public Frame asFrame()

Get the associated frame tree node.

Returns:

associated frame tree node, or null if none exists

asCelestialBodyFrame

public CelestialBodyFrame asCelestialBodyFrame()

Get the associated celestial body frame.

Returns:

associated celestial body frame, or null if frame is associated to a orbit, a spacecraft or is not supported

asOrbitRelativeFrame

public OrbitRelativeFrame asOrbitRelativeFrame()

Get the associated orbit relative frame.

Returns:

associated orbit relative frame, or null if frame is associated to a celestial body, a spacecraft or is not supported

asSpacecraftBodyFrame

public SpacecraftBodyFrame asSpacecraftBodyFrame()

Get the associated spacecraft body frame.

Returns:

associated spacecraft body frame, or null if frame is associated to a celestial body, an orbit or is not supported

getName

public String getName()

Get the CCSDS name for the frame.

Returns:

CCSDS name

map

public static FrameFacade map(Frame frame)

Map an Orekit frame to a CCSDS frame facade.

Parameters:

frame - a reference frame.

Returns:

the CCSDS frame corresponding to the Orekit frame

parse

public static FrameFacade parse(String name,
                                IERSConventions conventions,
                                boolean simpleEOP,
                                DataContext dataContext,
                                boolean allowCelestial,
                                boolean allowOrbit,
                                boolean allowSpacecraft)

Simple constructor.

Parameters:

name - name of the frame

conventions - IERS conventions to use

simpleEOP - if true, tidal effects are ignored when interpolating EOP

dataContext - to use when creating the frame

allowCelestial - if true, CelestialBodyFrame are allowed

allowOrbit - if true, OrbitRelativeFrame are allowed

allowSpacecraft - if true, SpacecraftBodyFrame are allowed

Returns:

frame facade corresponding to the CCSDS name

getTransform

public static Transform getTransform(FrameFacade frameIn,
                                     FrameFacade frameOut,
                                     Frame inertialPivotFrame,
                                     AbsoluteDate date,
                                     PVCoordinatesProvider pv)

Get the transform between CCSDS frames.

In case both input and output frames are orbit relative frame, the returned transform will only be composed of a rotation. Only commonly used orbit relative frames will be recognized.

Note that if the input/output CCSDS frame is defined using a :

• celestial body frame
• spacecraft body frame

then an exception will be thrown (currently not supported).

Note that the pivot frame provided must be inertial and consistent to what you are working with (i.e GCRF if around Earth for example).

Parameters:

frameIn - the input CCSDS frame to convert from

frameOut - the output CCSDS frame to convert to

inertialPivotFrame - inertial frame used as a pivot to create the transform

date - the date for the transform

pv - the position and velocity coordinates provider (required in case one of the frames is an orbit relative frame)

Returns:

the transform between CCSDS frames.