1   /* Copyright 2002-2024 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.CalculusFieldElement;
20  import org.hipparchus.Field;
21  import org.hipparchus.ode.AbstractFieldIntegrator;
22  import org.hipparchus.ode.nonstiff.AdamsMoultonFieldIntegrator;
23  import org.orekit.orbits.Orbit;
24  import org.orekit.orbits.OrbitType;
25  import org.orekit.propagation.numerical.NumericalPropagator;
26  
27  /**
28   * Builder for AdamsMoultonFieldIntegrator.
29   *
30   * @author Pascal Parraud
31   * @author Vincent Cucchietti
32   * @since 12.0
33   * @param <T> type of the field elements
34   */
35  public class AdamsMoultonFieldIntegratorBuilder<T extends CalculusFieldElement<T>>
36          extends AbstractLimitedVariableStepFieldIntegratorBuilder<T> {
37  
38      /**
39       * Build a new instance.
40       *
41       * @param nSteps number of steps
42       * @param minStep minimum step size (s)
43       * @param maxStep maximum step size (s)
44       * @param dP position error (m)
45       *
46       * @see AdamsMoultonFieldIntegrator
47       * @see NumericalPropagator#tolerances(double, Orbit, OrbitType)
48       */
49      public AdamsMoultonFieldIntegratorBuilder(final int nSteps, final double minStep,
50                                                final double maxStep, final double dP) {
51          super(nSteps, minStep, maxStep, dP);
52      }
53  
54      /** {@inheritDoc} */
55      @Override
56      public AbstractFieldIntegrator<T> buildIntegrator(final Field<T> field, final Orbit orbit, final OrbitType orbitType) {
57          final double[][] tol = NumericalPropagator.tolerances(dP, orbit, orbitType);
58          return new AdamsMoultonFieldIntegrator<>(field, nSteps, minStep, maxStep, tol[0], tol[1]);
59      }
60  }