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.models.earth.displacement; 18 19 import org.hipparchus.geometry.euclidean.threed.Vector3D; 20 import org.orekit.data.BodiesElements; 21 import org.orekit.frames.Frame; 22 23 /** Interface for computing reference points displacement. 24 * @author Luc Maisonobe 25 * @since 9.1 26 */ 27 public interface StationDisplacement { 28 29 /** Compute displacement of a ground reference point. 30 * @param elements elements affecting Earth orientation 31 * @param earthFrame Earth frame in which reference point is defined 32 * @param referencePoint reference point position in {@code earthFrame} 33 * @return displacement vector to be <em>added</em> to {@code referencePoint} 34 */ 35 Vector3D displacement(BodiesElements elements, Frame earthFrame, Vector3D referencePoint); 36 37 }