FixedTimeCartesianBoundaryStates.java
/* Copyright 2022-2024 Romain Serra
* 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.control.indirect.shooting.boundary;
import org.orekit.utils.AbsolutePVCoordinates;
/**
* Defines two-point boundary values for indirect shooting methods with Cartesian coordinates.
* This class represents the case where the initial and terminal times are fixed as well as the full
* Cartesian coordinates (position and velocity vectors in some frame), using {@link AbsolutePVCoordinates} as data holder.
* <br>
* The terminal condition can be anterior in time to the initial one, it just means that the shooting method will perform backward propagation.
* Also note that any acceleration vector passed in the {@link AbsolutePVCoordinates} is ignored.
*
* @author Romain Serra
* @since 12.2
* @see FixedTimeBoundaryOrbits
*/
public class FixedTimeCartesianBoundaryStates {
/** Initial Cartesian coordinates with date and frame. */
private final AbsolutePVCoordinates initialCartesianState;
/** Terminal Cartesian coordinates with date and frame. */
private final AbsolutePVCoordinates terminalCartesianState;
/**
* Constructor.
* @param initialCartesianState initial condition
* @param terminalCartesianState terminal condition
*/
public FixedTimeCartesianBoundaryStates(final AbsolutePVCoordinates initialCartesianState,
final AbsolutePVCoordinates terminalCartesianState) {
this.initialCartesianState = initialCartesianState;
this.terminalCartesianState = terminalCartesianState;
}
/**
* Getter for the initial Cartesian condition.
* @return initial condition
*/
public AbsolutePVCoordinates getInitialCartesianState() {
return initialCartesianState;
}
/**
* Getter for the terminal Cartesian condition.
* @return terminal condition
*/
public AbsolutePVCoordinates getTerminalCartesianState() {
return terminalCartesianState;
}
}