1   /* Copyright 2022-2025 Romain Serra
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.indirect.shooting.boundary;
18  
19  import org.orekit.control.indirect.shooting.AbstractFixedBoundaryCartesianSingleShooting;
20  import org.orekit.utils.PVCoordinates;
21  
22  /**
23   * Interface defining convergence criterion when the terminal condition is on a Cartesian state.
24   *
25   * @author Romain Serra
26   * @since 12.2
27   * @see AbstractFixedBoundaryCartesianSingleShooting
28   */
29  public interface CartesianBoundaryConditionChecker {
30  
31  
32      /**
33       * Returns the maximum number of iterations.
34       * @return maximum iterations
35       */
36      int getMaximumIterationCount();
37  
38      /**
39       * Asserts convergence.
40       * @param targetPV target position-velocity
41       * @param actualPV actual position-velocity
42       * @return convergence flag
43       */
44      boolean isConverged(PVCoordinates targetPV, PVCoordinates actualPV);
45  
46  }