/* Copyright 2002-2017 CS Systèmes d'Information
* Licensed to CS Systèmes d'Information (CS) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* CS licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.orekit.propagation.events;
import org.hipparchus.geometry.euclidean.threed.Vector3D;
import org.hipparchus.util.FastMath;
import org.hipparchus.util.MathUtils;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.orekit.Utils;
import org.orekit.errors.OrekitException;
import org.orekit.frames.FramesFactory;
import org.orekit.orbits.CartesianOrbit;
import org.orekit.orbits.KeplerianOrbit;
import org.orekit.orbits.Orbit;
import org.orekit.orbits.OrbitType;
import org.orekit.propagation.Propagator;
import org.orekit.propagation.analytical.EcksteinHechlerPropagator;
import org.orekit.propagation.events.EventsLogger.LoggedEvent;
import org.orekit.propagation.events.handlers.ContinueOnEvent;
import org.orekit.time.AbsoluteDate;
import org.orekit.time.TimeScale;
import org.orekit.time.TimeScalesFactory;
import org.orekit.utils.Constants;
import org.orekit.utils.PVCoordinates;
public class ApsideDetectorTest {
private Propagator propagator;
@Test
public void testSimple() throws OrekitException {
EventDetector detector = new ApsideDetector(propagator.getInitialState().getOrbit()).
withMaxCheck(600.0).
withThreshold(1.0e-12).
withHandler(new ContinueOnEvent<ApsideDetector>());
Assert.assertEquals(600.0, detector.getMaxCheckInterval(), 1.0e-15);
Assert.assertEquals(1.0e-12, detector.getThreshold(), 1.0e-15);
Assert.assertEquals(AbstractDetector.DEFAULT_MAX_ITER, detector.getMaxIterationCount());
EventsLogger logger = new EventsLogger();
propagator.addEventDetector(logger.monitorDetector(detector));
propagator.propagate(propagator.getInitialState().getOrbit().getDate().shiftedBy(Constants.JULIAN_DAY));
Assert.assertEquals(30, logger.getLoggedEvents().size());
for (LoggedEvent e : logger.getLoggedEvents()) {
KeplerianOrbit o = (KeplerianOrbit) OrbitType.KEPLERIAN.convertType(e.getState().getOrbit());
double expected = e.isIncreasing() ? 0.0 : FastMath.PI;
Assert.assertEquals(expected, MathUtils.normalizeAngle(o.getMeanAnomaly(), expected), 4.0e-14);
}
}
@Before
public void setUp() throws OrekitException {
Utils.setDataRoot("regular-data");
final TimeScale utc = TimeScalesFactory.getUTC();
final Vector3D position = new Vector3D(-6142438.668, 3492467.56, -25767.257);
final Vector3D velocity = new Vector3D(506.0, 943.0, 7450);
final AbsoluteDate date = new AbsoluteDate(2003, 9, 16, utc);
final Orbit orbit = new CartesianOrbit(new PVCoordinates(position, velocity),
FramesFactory.getEME2000(), date,
Constants.EIGEN5C_EARTH_MU);
propagator =
new EcksteinHechlerPropagator(orbit,
Constants.EIGEN5C_EARTH_EQUATORIAL_RADIUS,
Constants.EIGEN5C_EARTH_MU,
Constants.EIGEN5C_EARTH_C20,
Constants.EIGEN5C_EARTH_C30,
Constants.EIGEN5C_EARTH_C40,
Constants.EIGEN5C_EARTH_C50,
Constants.EIGEN5C_EARTH_C60);
}
}