1   /* Copyright 2002-2015 CS Systèmes d'Information
2    * Licensed to CS Systèmes d'Information (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.propagation;
18  
19  import org.orekit.time.AbsoluteDate;
20  
21  /** This interface is intended for ephemerides valid only during a time range.
22   *
23   * <p>This interface provides a mean to retrieve orbital parameters at
24   * any time within a given range. It should be implemented by orbit readers
25   * based on external data files and by continuous models built after numerical
26   * integration has been completed and dense output data as been
27   * gathered.</p>
28   *
29   * @author Luc Maisonobe
30   *
31   */
32  public interface BoundedPropagator extends Propagator {
33  
34      /** Get the first date of the range.
35       * @return the first date of the range
36       */
37      AbsoluteDate getMinDate();
38  
39      /** Get the last date of the range.
40       * @return the last date of the range
41       */
42      AbsoluteDate getMaxDate();
43  
44  }