1   /* Copyright 2002-2025 CS GROUP
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.files.ccsds.ndm.cdm;
18  
19  import java.io.IOException;
20  
21  import org.orekit.files.ccsds.definitions.Units;
22  import org.orekit.files.ccsds.section.AbstractWriter;
23  import org.orekit.files.ccsds.utils.generation.Generator;
24  import org.orekit.utils.units.Unit;
25  
26  /**
27   * Writer for state vector data for CCSDS Conjunction Data Messages.
28   *
29   * @author Melina Vanel
30   * @since 11.2
31   */
32  public class StateVectorWriter extends AbstractWriter {
33  
34      /** State vector block. */
35      private final StateVector stateVector;
36  
37      /** Create a writer.
38       * @param xmlTag name of the XML tag surrounding the section
39       * @param kvnTag name of the KVN tag surrounding the section (may be null)
40       * @param StateVector state vector data to write
41       */
42      StateVectorWriter(final String xmlTag, final String kvnTag,
43                         final StateVector StateVector) {
44          super(xmlTag, kvnTag);
45          this.stateVector = StateVector;
46  
47      }
48  
49      /** {@inheritDoc} */
50      @Override
51      protected void writeContent(final Generator generator) throws IOException {
52  
53          generator.writeComments(stateVector.getComments());
54  
55          // position
56          generator.writeEntry(StateVectorKey.X.name(),   stateVector.getPositionVector().getX(), Unit.KILOMETRE, true);
57          generator.writeEntry(StateVectorKey.Y.name(),   stateVector.getPositionVector().getY(), Unit.KILOMETRE, true);
58          generator.writeEntry(StateVectorKey.Z.name(),   stateVector.getPositionVector().getZ(), Unit.KILOMETRE, true);
59          // velocity
60          generator.writeEntry(StateVectorKey.X_DOT.name(),   stateVector.getVelocityVector().getX(), Units.KM_PER_S, true);
61          generator.writeEntry(StateVectorKey.Y_DOT.name(),   stateVector.getVelocityVector().getY(), Units.KM_PER_S, true);
62          generator.writeEntry(StateVectorKey.Z_DOT.name(),   stateVector.getVelocityVector().getZ(), Units.KM_PER_S, true);
63  
64      }
65  }