AttitudeElementsType.java
- /* Copyright 2002-2024 Luc Maisonobe
- * 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
- * limitations under the License.
- */
- package org.orekit.files.ccsds.ndm.adm.acm;
- import java.util.List;
- import java.util.stream.Collectors;
- import java.util.stream.Stream;
- import org.hipparchus.geometry.euclidean.threed.Rotation;
- import org.hipparchus.geometry.euclidean.threed.RotationConvention;
- import org.hipparchus.geometry.euclidean.threed.RotationOrder;
- import org.orekit.utils.units.Unit;
- /** Attitude element set type used in CCSDS {@link Acm Attitude Comprehensive Messages}.
- * @author Luc Maisonobe
- * @since 12.0
- */
- public enum AttitudeElementsType {
- // CHECKSTYLE: stop MultipleStringLiterals check
- /** Quaternion. */
- QUATERNION("Quaternion",
- "n/a", "n/a", "n/a", "n/a") {
- /** {@inheritDoc} */
- @Override
- public Rotation toRotation(final RotationOrder order, final double[] elements) {
- return new Rotation(elements[3], elements[0], elements[1], elements[2], true);
- }
- },
- /** Euler angles. */
- EULER_ANGLES("Euler angles",
- "°", "°", "°") {
- /** {@inheritDoc} */
- @Override
- public Rotation toRotation(final RotationOrder order, final double[] elements) {
- return new Rotation(order, RotationConvention.FRAME_TRANSFORM,
- elements[0], elements[1], elements[2]);
- }
- },
- /** Direction cosine matrix. */
- DCM("Direction cosine matrix",
- "n/a", "n/a", "n/a", "n/a", "n/a", "n/a", "n/a", "n/a", "n/a") {
- /** {@inheritDoc} */
- @Override
- public Rotation toRotation(final RotationOrder order, final double[] elements) {
- return new Rotation(new double[][] {
- { elements[0], elements[3], elements[6] },
- { elements[1], elements[4], elements[7] },
- { elements[2], elements[5], elements[8] }
- }, 1.0e-10);
- }
- };
- // CHECKSTYLE: resume MultipleStringLiterals check
- /** Description. */
- private final String description;
- /** Elements units. */
- private final List<Unit> units;
- /** Simple constructor.
- * @param description description
- * @param unitsSpecifications elements units specifications
- */
- AttitudeElementsType(final String description, final String... unitsSpecifications) {
- this.description = description;
- this.units = Stream.of(unitsSpecifications).
- map(s -> Unit.parse(s)).
- collect(Collectors.toList());
- }
- /** Get the elements units.
- * @return elements units
- */
- public List<Unit> getUnits() {
- return units;
- }
- /** Convert to rotation.
- * @param order rotation order for Euler angles
- * @param elements elements values in SI units
- * @return rotation
- */
- public abstract Rotation toRotation(RotationOrder order, double[] elements);
- /** {@inheritDoc} */
- @Override
- public String toString() {
- return description;
- }
- }