1   /* Copyright 2020-2025 Exotrail
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.control.heuristics.lambert;
18  
19  import org.hipparchus.geometry.euclidean.threed.Vector3D;
20  
21  /**
22   * Class holding the two velocity vectors of a Lambert arc.
23   *
24   * @author Romain Serra
25   * @since 13.1
26   */
27  public class LambertBoundaryVelocities {
28  
29      /** Initial velocity vector. */
30      private final Vector3D initialVelocity;
31  
32      /** Terminal velocity vector. */
33      private final Vector3D terminalVelocity;
34  
35      /**
36       * Constructor.
37       * @param initialVelocity initial velocity
38       * @param terminalVelocity terminal velocity
39       */
40      public LambertBoundaryVelocities(final Vector3D initialVelocity, final Vector3D terminalVelocity) {
41          this.initialVelocity = initialVelocity;
42          this.terminalVelocity = terminalVelocity;
43      }
44  
45      /**
46       * Getter for the initial velocity vector.
47       * @return initial velocity
48       */
49      public Vector3D getInitialVelocity() {
50          return initialVelocity;
51      }
52  
53      /**
54       * Getter for the terminal velocity vector.
55       * @return terminal velocity
56       */
57      public Vector3D getTerminalVelocity() {
58          return terminalVelocity;
59      }
60  }