1   /* Copyright 2022-2025 Thales Alenia Space
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.time;
18  
19  /**
20   * Class that associates a double, its time derivative with a date.
21   *
22   * @author Luc Maisonobe
23   * @since 12.1
24   */
25  public class TimeStampedDoubleAndDerivative extends TimeStampedDouble {
26  
27      /** Time derivative. */
28      private final double derivative;
29  
30      /**
31       * Constructor.
32       *
33       * @param date       date associated to value
34       * @param value      value
35       * @param derivative time derivative
36       */
37      public TimeStampedDoubleAndDerivative(final AbsoluteDate date, final double value, final double derivative) {
38          super(date, value);
39          this.derivative = derivative;
40      }
41  
42      /**
43       * Constructor.
44       *
45       * @param value value
46       * @param derivative time derivative
47       * @param date date associated to value
48       */
49      @Deprecated
50      public TimeStampedDoubleAndDerivative(final double value, final double derivative,
51                                            final AbsoluteDate date) {
52          super(date, value);
53          this.derivative = derivative;
54      }
55  
56      /** Get time derivative.
57       * @return time derivative
58       */
59      public double getDerivative() {
60          return derivative;
61      }
62  
63      @Override
64      public String toString() {
65          return "{" +
66                  "date=" + getDate() +
67                  ", value=" + getValue() +
68                  ", derivative=" + derivative +
69                  '}';
70      }
71  }