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 18 package org.orekit.frames; 19 20 import java.io.Serializable; 21 22 import org.hipparchus.RealFieldElement; 23 import org.orekit.time.AbsoluteDate; 24 import org.orekit.time.FieldAbsoluteDate; 25 26 /** Interface for Transform providers. 27 * <p>The transform provider interface is mainly used to define the 28 * transform between a frame and its parent frame. 29 * </p> 30 * @author Luc Maisonobe 31 */ 32 public interface TransformProvider extends Serializable { 33 34 /** Get the {@link Transform} corresponding to specified date. 35 * @param date current date 36 * @return transform at specified date 37 */ 38 Transform getTransform(AbsoluteDate date); 39 40 /** Get the {@link FieldTransform} corresponding to specified date. 41 * @param date current date 42 * @param <T> type of the field elements 43 * @return transform at specified date 44 * @since 9.0 45 */ 46 <T extends RealFieldElement<T>> FieldTransform<T> getTransform(FieldAbsoluteDate<T> date); 47 48 }