FixedFrameBuilder.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
- * limitations under the License.
- */
- package org.orekit.attitudes;
- import org.hipparchus.CalculusFieldElement;
- import org.orekit.frames.FieldTransform;
- import org.orekit.frames.Frame;
- import org.orekit.frames.Transform;
- import org.orekit.time.AbsoluteDate;
- import org.orekit.time.FieldAbsoluteDate;
- import org.orekit.utils.FieldPVCoordinatesProvider;
- import org.orekit.utils.PVCoordinatesProvider;
- import org.orekit.utils.TimeStampedAngularCoordinates;
- import org.orekit.utils.TimeStampedFieldAngularCoordinates;
- /** Builder that assumes angular coordinates are given in a fixed frame.
- * @author Luc Maisonobe
- * @since 11.0
- */
- public class FixedFrameBuilder implements AttitudeBuilder {
- /** Reference frame for raw attitudes. */
- private final Frame referenceFrame;
- /** Creates new instance.
- * @param referenceFrame reference frame for raw attitudes
- */
- public FixedFrameBuilder(final Frame referenceFrame) {
- this.referenceFrame = referenceFrame;
- }
- /** {@inheritDoc} */
- @Override
- public Attitude build(final Frame frame, final PVCoordinatesProvider pvProv,
- final TimeStampedAngularCoordinates rawAttitude) {
- final AbsoluteDate date = rawAttitude.getDate();
- final Transform t = frame.getTransformTo(referenceFrame, date);
- final TimeStampedAngularCoordinates frame2Ref =
- new TimeStampedAngularCoordinates(date,
- t.getRotation(),
- t.getRotationRate(),
- t.getRotationAcceleration());
- return new Attitude(frame, rawAttitude.addOffset(frame2Ref));
- }
- /** {@inheritDoc} */
- @Override
- public <T extends CalculusFieldElement<T>> FieldAttitude<T>
- build(final Frame frame, final FieldPVCoordinatesProvider<T> pvProv,
- final TimeStampedFieldAngularCoordinates<T> rawAttitude) {
- final FieldAbsoluteDate<T> date = rawAttitude.getDate();
- final FieldTransform<T> t = frame.getTransformTo(referenceFrame, date);
- final TimeStampedFieldAngularCoordinates<T> frame2Ref =
- new TimeStampedFieldAngularCoordinates<>(date,
- t.getRotation(),
- t.getRotationRate(),
- t.getRotationAcceleration());
- return new FieldAttitude<>(frame, rawAttitude.addOffset(frame2Ref));
- }
- }