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.nonstiff.AdamsMoultonIntegrator;
20  import org.orekit.propagation.ToleranceProvider;
21  
22  /** Builder for AdamsMoultonIntegrator.
23   * @author Pascal Parraud
24   * @since 6.0
25   */
26  public class AdamsMoultonIntegratorBuilder extends AbstractVariableStepIntegratorBuilder<AdamsMoultonIntegrator> {
27  
28      /** Number of steps. */
29      private final int nSteps;
30  
31      /** Build a new instance using default integration tolerances.
32       * @param nSteps number of steps
33       * @param minStep minimum step size (s)
34       * @param maxStep maximum step size (s)
35       * @param dP position error (m)
36       * @see AdamsMoultonIntegrator
37       */
38      public AdamsMoultonIntegratorBuilder(final int nSteps, final double minStep,
39                                           final double maxStep, final double dP) {
40          this(nSteps, minStep, maxStep, getDefaultToleranceProvider(dP));
41      }
42  
43      /** Build a new instance using default integration tolerances.
44       * @param nSteps number of steps
45       * @param minStep minimum step size (s)
46       * @param maxStep maximum step size (s)
47       * @param toleranceProvider integration tolerance provider
48       * @see AdamsMoultonIntegrator
49       * @since 13.0
50       */
51      public AdamsMoultonIntegratorBuilder(final int nSteps, final double minStep,
52                                           final double maxStep, final ToleranceProvider toleranceProvider) {
53          super(minStep, maxStep, toleranceProvider);
54          this.nSteps  = nSteps;
55      }
56  
57      /** {@inheritDoc} */
58      @Override
59      protected AdamsMoultonIntegrator buildIntegrator(final double[][] tolerances) {
60          return new AdamsMoultonIntegrator(nSteps, getMinStep(), getMaxStep(), tolerances[0], tolerances[1]);
61      }
62  
63  }