MeanKeplerianElementsWriter.java
/* Copyright 2002-2022 CS GROUP
* Licensed to CS GROUP (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
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package org.orekit.files.ccsds.ndm.odm.omm;
import java.io.IOException;
import org.orekit.files.ccsds.definitions.TimeConverter;
import org.orekit.files.ccsds.definitions.Units;
import org.orekit.files.ccsds.ndm.odm.KeplerianElements;
import org.orekit.files.ccsds.ndm.odm.KeplerianElementsKey;
import org.orekit.files.ccsds.section.AbstractWriter;
import org.orekit.files.ccsds.utils.generation.Generator;
import org.orekit.utils.units.Unit;
/** Writer for Keplerian elements data in OMM files.
* @author Luc Maisonobe
* @since 11.0
*/
class MeanKeplerianElementsWriter extends AbstractWriter {
/** Keplerian elements block. */
private final KeplerianElements keplerianElements;
/** Converter for dates. */
private final TimeConverter timeConverter;
/** Flag for SGP/SDP mean element theory. */
private final boolean theoryIsSgpSdp;
/** Create a writer.
* @param xmlTag name of the XML tag surrounding the section
* @param kvnTag name of the KVN tag surrounding the section (may be null)
* @param keplerianElements Keplerian elements to write
* @param timeConverter converter for dates
* @param theoryIsSgpSdp if true, mean element theory in SGP or SDP
*/
MeanKeplerianElementsWriter(final String xmlTag, final String kvnTag,
final KeplerianElements keplerianElements,
final TimeConverter timeConverter,
final boolean theoryIsSgpSdp) {
super(xmlTag, kvnTag);
this.keplerianElements = keplerianElements;
this.timeConverter = timeConverter;
this.theoryIsSgpSdp = theoryIsSgpSdp;
}
/** {@inheritDoc} */
@Override
protected void writeContent(final Generator generator) throws IOException {
// Keplerian elements block
generator.writeComments(keplerianElements.getComments());
generator.writeEntry(KeplerianElementsKey.EPOCH.name(), timeConverter, keplerianElements.getEpoch(), true);
if (theoryIsSgpSdp) {
generator.writeEntry(KeplerianElementsKey.MEAN_MOTION.name(), keplerianElements.getMeanMotion(), Units.REV_PER_DAY, true);
} else {
generator.writeEntry(KeplerianElementsKey.SEMI_MAJOR_AXIS.name(), keplerianElements.getA(), Unit.KILOMETRE, true);
}
generator.writeEntry(KeplerianElementsKey.ECCENTRICITY.name(), keplerianElements.getE(), Unit.ONE, true);
generator.writeEntry(KeplerianElementsKey.INCLINATION.name(), keplerianElements.getI(), Unit.DEGREE, true);
generator.writeEntry(KeplerianElementsKey.RA_OF_ASC_NODE.name(), keplerianElements.getRaan(), Unit.DEGREE, true);
generator.writeEntry(KeplerianElementsKey.ARG_OF_PERICENTER.name(), keplerianElements.getPa(), Unit.DEGREE, true);
generator.writeEntry(KeplerianElementsKey.MEAN_ANOMALY.name(), keplerianElements.getAnomaly(), Unit.DEGREE, true);
generator.writeEntry(KeplerianElementsKey.GM.name(), keplerianElements.getMu(), Units.KM3_PER_S2, false);
}
}