L2Frame.java

  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.frames;

  18. import org.orekit.bodies.CelestialBody;
  19. import org.orekit.utils.AngularDerivativesFilter;
  20. import org.orekit.utils.CartesianDerivativesFilter;
  21. import org.orekit.utils.Constants;
  22. import org.orekit.utils.OrekitConfiguration;

  23. /** Class to create a L2 centered frame with {@link L2TransformProvider}.
  24.  *  Parent frame is always set as primaryBody.getInertiallyOrientedFrame()
  25.  * @author Luc Maisonobe
  26.  * @author Julio Hernanz
  27.  */
  28. public class L2Frame extends Frame {

  29.     /** Serializable UID.*/
  30.     private static final long serialVersionUID = 20170811L;

  31.     /** Simple constructor.
  32.      * @param primaryBody Celestial body with bigger mass, m1.
  33.      * @param secondaryBody Celestial body with smaller mass, m2.
  34.      */
  35.     public L2Frame(final CelestialBody primaryBody, final CelestialBody secondaryBody) {
  36.         super(primaryBody.getInertiallyOrientedFrame(),
  37.               new ShiftingTransformProvider(new L2TransformProvider(primaryBody, secondaryBody),
  38.                                             CartesianDerivativesFilter.USE_P,
  39.                                             AngularDerivativesFilter.USE_R,
  40.                                             5, Constants.JULIAN_DAY / 24,
  41.                                             OrekitConfiguration.getCacheSlotsNumber(),
  42.                                             Constants.JULIAN_YEAR, 30 * Constants.JULIAN_DAY),
  43.               primaryBody.getName() + "-" + secondaryBody.getName() + "-L2", true);
  44.     }

  45. }