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18 package org.orekit.files.ccsds.ndm.adm.apm;
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20 import java.io.IOException;
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22 import org.orekit.files.ccsds.definitions.Units;
23 import org.orekit.files.ccsds.section.AbstractWriter;
24 import org.orekit.files.ccsds.utils.generation.Generator;
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30 class InertiaWriter extends AbstractWriter {
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35 private final double formatVersion;
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38 private final Inertia inertia;
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46 InertiaWriter(final double formatVersion, final String xmlTag, final String kvnTag,
47 final Inertia spacecraftParameters) {
48 super(xmlTag, kvnTag);
49 this.formatVersion = formatVersion;
50 this.inertia = spacecraftParameters;
51 }
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54 @Override
55 protected void writeContent(final Generator generator) throws IOException {
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57 generator.writeComments(inertia.getComments());
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59
60 if (inertia.getFrame() != null) {
61 generator.writeEntry(InertiaKey.INERTIA_REF_FRAME.name(),
62 inertia.getFrame().getName(),
63 null, false);
64 }
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67 if (formatVersion < 2.0) {
68 generator.writeEntry(InertiaKey.I11.name(), inertia.getInertiaMatrix().getEntry(0, 0), Units.KG_M2, true);
69 generator.writeEntry(InertiaKey.I22.name(), inertia.getInertiaMatrix().getEntry(1, 1), Units.KG_M2, true);
70 generator.writeEntry(InertiaKey.I33.name(), inertia.getInertiaMatrix().getEntry(2, 2), Units.KG_M2, true);
71 generator.writeEntry(InertiaKey.I12.name(), inertia.getInertiaMatrix().getEntry(0, 1), Units.KG_M2, true);
72 generator.writeEntry(InertiaKey.I13.name(), inertia.getInertiaMatrix().getEntry(0, 2), Units.KG_M2, true);
73 generator.writeEntry(InertiaKey.I23.name(), inertia.getInertiaMatrix().getEntry(1, 2), Units.KG_M2, true);
74 } else {
75 generator.writeEntry(InertiaKey.IXX.name(), inertia.getInertiaMatrix().getEntry(0, 0), Units.KG_M2, true);
76 generator.writeEntry(InertiaKey.IYY.name(), inertia.getInertiaMatrix().getEntry(1, 1), Units.KG_M2, true);
77 generator.writeEntry(InertiaKey.IZZ.name(), inertia.getInertiaMatrix().getEntry(2, 2), Units.KG_M2, true);
78 generator.writeEntry(InertiaKey.IXY.name(), inertia.getInertiaMatrix().getEntry(0, 1), Units.KG_M2, true);
79 generator.writeEntry(InertiaKey.IXZ.name(), inertia.getInertiaMatrix().getEntry(0, 2), Units.KG_M2, true);
80 generator.writeEntry(InertiaKey.IYZ.name(), inertia.getInertiaMatrix().getEntry(1, 2), Units.KG_M2, true);
81 }
82
83 }
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85 }