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.adjoint.cost;
18  
19  import org.orekit.propagation.events.EventDetectionSettings;
20  import org.orekit.propagation.events.EventDetector;
21  import org.orekit.propagation.events.handlers.EventHandler;
22  import org.orekit.propagation.events.handlers.ResetDerivativesOnEvent;
23  
24  /**
25   * Abstract event detector for singularities in adjoint dynamics.
26   *
27   * @author Romain Serra
28   * @since 13.0
29   */
30  public abstract class ControlSwitchDetector implements EventDetector {
31  
32      /** Event handler. */
33      private final EventHandler handler = new ResetDerivativesOnEvent();
34  
35      /** Event detection settings. */
36      private final EventDetectionSettings detectionSettings;
37  
38      /**
39       * Constructor.
40       * @param detectionSettings detection settings
41       */
42      protected ControlSwitchDetector(final EventDetectionSettings detectionSettings) {
43          this.detectionSettings = detectionSettings;
44      }
45  
46      @Override
47      public EventDetectionSettings getDetectionSettings() {
48          return detectionSettings;
49      }
50  
51      @Override
52      public EventHandler getHandler() {
53          return handler;
54      }
55  }