1   /* Copyright 2022-2026 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.orbits;
18  
19  import org.orekit.time.AbsoluteDate;
20  import org.orekit.utils.ParameterDriversList.DelegatingDriver;
21  
22  import java.util.List;
23  
24  /** Factory for Keplerian orbits.
25   * @since 14.0
26   */
27  public class KeplerianOrbitFactory extends AbstractOrbitFactory<KeplerianOrbit> {
28  
29      /** Simple constructor.
30       * @param template template orbit
31       * @param positionScale position scale used to scale the orbital drivers
32       * @param positionAngleType position angle type to use
33       */
34      public KeplerianOrbitFactory(final KeplerianOrbit template, final double positionScale,
35                                   final PositionAngleType positionAngleType) {
36          super(positionScale, template, positionAngleType);
37      }
38  
39      /** {@inheritDoc} */
40      @Override
41      public KeplerianOrbit createFromDrivers() {
42          final AbsoluteDate           date    = getDate();
43          final List<DelegatingDriver> drivers = getOrbitalParametersDrivers().getDrivers();
44          return new KeplerianOrbit(drivers.get(0).getValue(date),
45                                    drivers.get(1).getValue(date),
46                                    drivers.get(2).getValue(date),
47                                    drivers.get(3).getValue(date),
48                                    drivers.get(4).getValue(date),
49                                    drivers.get(5).getValue(date),
50                                    getPositionAngleType(), getFrame(), getDate(), getMu());
51      }
52  
53  }