/* Copyright 2002-2017 CS Systèmes d'Information
* Licensed to CS Systèmes d'Information (CS) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* CS licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.orekit.files.ccsds;
import org.orekit.bodies.CelestialBodyFactory;
import org.orekit.errors.OrekitException;
import org.orekit.errors.OrekitMessages;
import org.orekit.frames.Frame;
import org.orekit.frames.FramesFactory;
import org.orekit.frames.HelmertTransformation;
import org.orekit.frames.LOFType;
import org.orekit.utils.IERSConventions;
/** Frames used in CCSDS Orbit Data Messages.
* @author Steven Ports
* @since 6.1
*/
public enum CCSDSFrame {
/** Earth Mean Equator and Equinox of J2000. */
EME2000(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
return FramesFactory.getEME2000();
}
},
/** Geocentric Celestial Reference Frame. */
GCRF(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
return FramesFactory.getGCRF();
}
},
/** Greenwich Rotating Coordinates. */
GRC(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
return FramesFactory.getITRFEquinox(conventions, simpleEOP);
}
},
/** International Celestial Reference Frame. */
ICRF(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
return FramesFactory.getICRF();
}
},
/** International Celestial Reference Frame 2000. */
ITRF2000(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
final Frame itrf2008 = FramesFactory.getITRF(conventions, simpleEOP);
final HelmertTransformation.Predefined predefinedHT =
HelmertTransformation.Predefined.ITRF_2008_TO_ITRF_2000;
return predefinedHT.createTransformedITRF(itrf2008, toString());
}
},
/** International Celestial Reference Frame 1993. */
ITRF93(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
final Frame itrf2008 = FramesFactory.getITRF(conventions, simpleEOP);
final HelmertTransformation.Predefined predefinedHT =
HelmertTransformation.Predefined.ITRF_2008_TO_ITRF_93;
return predefinedHT.createTransformedITRF(itrf2008, toString());
}
},
/** International Celestial Reference Frame 1997. */
ITRF97(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
final Frame itrf2008 = FramesFactory.getITRF(conventions, simpleEOP);
final HelmertTransformation.Predefined predefinedHT =
HelmertTransformation.Predefined.ITRF_2008_TO_ITRF_97;
return predefinedHT.createTransformedITRF(itrf2008, toString());
}
},
/** Mars Centered Inertial. */
MCI(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
return CelestialBodyFactory.getMars().getInertiallyOrientedFrame();
}
},
/** True of Date, Rotating. */
TDR(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
return FramesFactory.getGTOD(conventions, simpleEOP);
}
},
/**
* True Equator Mean Equinox.
* TEME may be used only for OMMs based on NORAD
* Two Line Element sets, and in no other circumstances.
*/
TEME(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
return FramesFactory.getTEME();
}
},
/** True of Date. */
TOD(null) {
/** {@inheritDoc} */
@Override
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
if (conventions == null) {
throw new OrekitException(OrekitMessages.CCSDS_UNKNOWN_CONVENTIONS);
}
return FramesFactory.getTOD(conventions, simpleEOP);
}
},
/** Radial, Transverse (along-track) and Normal. */
RTN(LOFType.QSW),
/** Another name for Radial, Transverse (along-track) and Normal. */
RSW(LOFType.QSW),
/** TNW : x-axis along the velocity vector, W along the orbital angular momentum vector and
N completes the right handed system. */
TNW(LOFType.TNW);
/** Type of Local Orbital Frame (may be null). */
private final LOFType lofType;
/** Simple constructor.
* @param lofType type of Local Orbital Frame (null if frame is not a Local Orbital Frame)
*/
CCSDSFrame(final LOFType lofType) {
this.lofType = lofType;
}
/** Check if the frame is a Local Orbital frame.
* @return true if the frame is a Local Orbital Frame
*/
public boolean isLof() {
return lofType != null;
}
/** Get the type of Local Orbital frame.
* <p>
* If the frame is not a Local Orbital frame (i.e. if this method returns null),
* then the {@link #getFrame(IERSConventions, boolean) getFrame} method must be used to
* retrieve the absolute frame.
* </p>
* @return type of Local Orbital Frame, or null if the frame is not a local orbital frame
* @see #isLof()
*/
public LOFType getLofType() {
return lofType;
}
/**
* Get the frame corresponding to the CCSDS constant.
* @param conventions IERS conventions to use
* @param simpleEOP if true, tidal effects are ignored when interpolating EOP
* @return frame corresponding to the CCSDS constant
* @exception OrekitException if the frame cannot be retrieved or if it
* is a Local Orbital Frame
* @see #isLof()
*/
public Frame getFrame(final IERSConventions conventions, final boolean simpleEOP)
throws OrekitException {
throw new OrekitException(OrekitMessages.CCSDS_INVALID_FRAME, toString());
}
}