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.events.handlers;
18
19 import org.hipparchus.CalculusFieldElement;
20 import org.hipparchus.Field;
21 import org.hipparchus.ode.events.Action;
22 import org.hipparchus.util.Binary64Field;
23 import org.junit.jupiter.api.Assertions;
24 import org.junit.jupiter.api.Test;
25 import org.orekit.frames.FramesFactory;
26 import org.orekit.orbits.FieldKeplerianOrbit;
27 import org.orekit.orbits.PositionAngleType;
28 import org.orekit.propagation.FieldSpacecraftState;
29 import org.orekit.time.FieldAbsoluteDate;
30 import org.orekit.utils.Constants;
31
32 public class FieldStopOnDecreasingTest {
33
34 @Test
35 public void testNoReset() {
36 doTestNoReset(Binary64Field.getInstance());
37 }
38
39 @Test
40 public void testIncreasing() {
41 doTestIncreasing(Binary64Field.getInstance());
42 }
43
44 @Test
45 public void testDecreasing() {
46 doTestDecreasing(Binary64Field.getInstance());
47 }
48
49 private <T extends CalculusFieldElement<T>> void doTestNoReset(Field<T> field) {
50 T zero = field.getZero();
51 FieldAbsoluteDate<T> date = new FieldAbsoluteDate<>(field);
52 FieldSpacecraftState<T> s = new FieldSpacecraftState<>(new FieldKeplerianOrbit<>(zero.add(24464560.0),
53 zero.add( 0.7311),
54 zero.add(0.122138),
55 zero.add(3.10686),
56 zero.add(1.00681),
57 zero.add(0.048363),
58 PositionAngleType.MEAN,
59 FramesFactory.getEME2000(),
60 date,
61 zero.add(Constants.EIGEN5C_EARTH_MU)));
62 Assertions.assertSame(s, new FieldStopOnDecreasing<T>().resetState(null, s));
63 }
64
65 private <T extends CalculusFieldElement<T>> void doTestIncreasing(Field<T> field) {
66 T zero = field.getZero();
67 FieldAbsoluteDate<T> date = new FieldAbsoluteDate<>(field);
68 FieldSpacecraftState<T> s = new FieldSpacecraftState<>(new FieldKeplerianOrbit<>(zero.add(24464560.0),
69 zero.add( 0.7311),
70 zero.add(0.122138),
71 zero.add(3.10686),
72 zero.add(1.00681),
73 zero.add(0.048363),
74 PositionAngleType.MEAN,
75 FramesFactory.getEME2000(),
76 date,
77 zero.add(Constants.EIGEN5C_EARTH_MU)));
78
79 Assertions.assertSame(Action.CONTINUE, new FieldStopOnDecreasing<T>().eventOccurred(s, null, true));
80 }
81
82 private <T extends CalculusFieldElement<T>> void doTestDecreasing(Field<T> field) {
83 T zero = field.getZero();
84 FieldAbsoluteDate<T> date = new FieldAbsoluteDate<>(field);
85 FieldSpacecraftState<T> s = new FieldSpacecraftState<>(new FieldKeplerianOrbit<>(zero.add(24464560.0),
86 zero.add(0.7311),
87 zero.add(0.122138),
88 zero.add(3.10686),
89 zero.add(1.00681),
90 zero.add(0.048363),
91 PositionAngleType.MEAN,
92 FramesFactory.getEME2000(),
93 date,
94 zero.add(Constants.EIGEN5C_EARTH_MU)));
95
96 Assertions.assertSame(Action.STOP, new FieldStopOnDecreasing<T>().eventOccurred(s, null, false));
97 }
98
99 }
100