1   /* Copyright 2002-2025 CS GROUP
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.files.ccsds.definitions;
18  
19  import org.orekit.annotation.DefaultDataContext;
20  import org.orekit.bodies.CelestialBodies;
21  import org.orekit.bodies.CelestialBody;
22  import org.orekit.data.DataContext;
23  
24  /** Facade in front of several center bodies in CCSDS messages.
25   * @author Luc Maisonobe
26   * @since 11.0
27   */
28  public class BodyFacade {
29  
30      /** Name of the center. */
31      private final String name;
32  
33      /** Celestial body (may be null). */
34      private final CelestialBody body;
35  
36      /** Simple constructor.
37       * @param name name of the frame
38       * @param body celestial body (may be null)
39       */
40      public BodyFacade(final String name, final CelestialBody body) {
41          this.name = name;
42          this.body = body;
43      }
44  
45      /** Get the CCSDS name for the body.
46       * @return CCSDS name
47       */
48      public String getName() {
49          return name;
50      }
51  
52      /** Get the celestial body.
53       * @return celestial body (may be null)
54       */
55      public CelestialBody getBody() {
56          return body;
57      }
58  
59      /**
60       * Create a body facade from an input center name.
61       *
62       * <p>This method uses the {@link DataContext#getDefault() default data context}.
63       *
64       * @param centerName input center name
65       * @return a body facade corresponding to the input center name
66       * @since 11.2
67       */
68      @DefaultDataContext
69      public static BodyFacade create(final CenterName centerName) {
70          return create(centerName, DataContext.getDefault());
71      }
72  
73      /**
74       * Create a body facade from an input center name.
75       *
76       * @param centerName input center name
77       * @param context data context
78       * @return a body facade corresponding to the input center name
79       * @since 12.0
80       */
81      public static BodyFacade create(final CenterName centerName, final DataContext context) {
82          return create(centerName, context.getCelestialBodies());
83      }
84  
85      /**
86       * Create a body facade from an input center name.
87       *
88       * @param centerName input center name
89       * @param bodies celestial bodies
90       * @return a body facade corresponding to the input center name
91       * @since 12.0
92       */
93      public static BodyFacade create(final CenterName centerName, final CelestialBodies bodies) {
94          return new BodyFacade(centerName.name(), centerName.getCelestialBody(bodies));
95      }
96  
97  }