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.propagation.conversion;
18  
19  import org.hipparchus.ode.ODEIntegrator;
20  import org.orekit.orbits.Orbit;
21  import org.orekit.orbits.OrbitType;
22  import org.orekit.orbits.PositionAngleType;
23  import org.orekit.utils.AbsolutePVCoordinates;
24  
25  /** This interface is the top-level abstraction to build first order integrators for propagators conversion.
26   * @author Pascal Parraud
27   * @since 6.0
28   */
29  public interface ODEIntegratorBuilder {
30  
31      /** Build a first order integrator.
32       * @param orbit reference orbit
33       * @param orbitType orbit type to use
34       * @param angleType position angle type to use
35       * @return a first order integrator ready to use
36       * @since 13.0
37       */
38      ODEIntegrator buildIntegrator(Orbit orbit, OrbitType orbitType, PositionAngleType angleType);
39  
40      /** Build a first order integrator.
41       * @param orbit reference orbit
42       * @param orbitType orbit type to use
43       * @return a first order integrator ready to use
44       */
45      ODEIntegrator buildIntegrator(Orbit orbit, OrbitType orbitType);
46  
47      /**
48       * Build a first order integrator. Non-orbit version.
49       * @param absolutePVCoordinates absolute position-velocity vector
50       * @return a first order integrator ready to use
51       * @since 12.2
52       */
53      ODEIntegrator buildIntegrator(AbsolutePVCoordinates absolutePVCoordinates);
54  }