1 /* Copyright 2002-2019 CS Systèmes d'Information 2 * Licensed to CS Systèmes d'Information (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.attitudes; 18 19 import java.io.Serializable; 20 21 import org.hipparchus.RealFieldElement; 22 import org.orekit.frames.Frame; 23 import org.orekit.time.AbsoluteDate; 24 import org.orekit.time.FieldAbsoluteDate; 25 import org.orekit.utils.FieldPVCoordinatesProvider; 26 import org.orekit.utils.PVCoordinatesProvider; 27 28 29 /** This interface represents an attitude provider model set. 30 * <p>An attitude provider provides a way to compute an {@link Attitude Attitude} 31 * from an date and position-velocity local provider.</p> 32 * @author Véronique Pommier-Maurussane 33 */ 34 public interface AttitudeProvider extends Serializable { 35 36 /** Compute the attitude corresponding to an orbital state. 37 * @param pvProv local position-velocity provider around current date 38 * @param date current date 39 * @param frame reference frame from which attitude is computed 40 * @return attitude attitude on the specified date and position-velocity state 41 */ 42 Attitude getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate date, Frame frame); 43 44 /** Compute the attitude corresponding to an orbital state. 45 * @param pvProv local position-velocity provider around current date 46 * @param date current date 47 * @param frame reference frame from which attitude is computed 48 * @param <T> type of the field elements 49 * @return attitude attitude on the specified date and position-velocity state 50 * @since 9.0 51 */ 52 <T extends RealFieldElement<T>> FieldAttitude<T> getAttitude(FieldPVCoordinatesProvider<T> pvProv, 53 FieldAbsoluteDate<T> date, 54 Frame frame); 55 }