StateVectorWriter.java
/* Copyright 2002-2024 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;
import java.io.IOException;
import org.orekit.files.ccsds.definitions.TimeConverter;
import org.orekit.files.ccsds.definitions.Units;
import org.orekit.files.ccsds.section.AbstractWriter;
import org.orekit.files.ccsds.utils.generation.Generator;
import org.orekit.utils.TimeStampedPVCoordinates;
import org.orekit.utils.units.Unit;
/** Writer for state vector data.
* @author Luc Maisonobe
* @since 11.0
*/
public class StateVectorWriter extends AbstractWriter {
/** State vector block. */
private final StateVector stateVector;
/** Converter for dates. */
private final TimeConverter timeConverter;
/** 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 stateVector state vector to write
* @param timeConverter converter for dates
*/
public StateVectorWriter(final String xmlTag, final String kvnTag,
final StateVector stateVector, final TimeConverter timeConverter) {
super(xmlTag, kvnTag);
this.stateVector = stateVector;
this.timeConverter = timeConverter;
}
/** {@inheritDoc} */
@Override
protected void writeContent(final Generator generator) throws IOException {
// state vector block
final TimeStampedPVCoordinates pv = stateVector.toTimeStampedPVCoordinates();
generator.writeComments(stateVector.getComments());
generator.writeEntry(StateVectorKey.EPOCH.name(), timeConverter, pv.getDate(), true, true);
generator.writeEntry(StateVectorKey.X.name(), pv.getPosition().getX(), Unit.KILOMETRE, true);
generator.writeEntry(StateVectorKey.Y.name(), pv.getPosition().getY(), Unit.KILOMETRE, true);
generator.writeEntry(StateVectorKey.Z.name(), pv.getPosition().getZ(), Unit.KILOMETRE, true);
generator.writeEntry(StateVectorKey.X_DOT.name(), pv.getVelocity().getX(), Units.KM_PER_S, true);
generator.writeEntry(StateVectorKey.Y_DOT.name(), pv.getVelocity().getY(), Units.KM_PER_S, true);
generator.writeEntry(StateVectorKey.Z_DOT.name(), pv.getVelocity().getZ(), Units.KM_PER_S, true);
// note that OPM format does not use X_DDOT, Y_DDOT, Z_DDOT, they are used only in OEM format
}
}