/* 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.models.earth.tessellation;
import org.hipparchus.geometry.euclidean.threed.Vector3D;
import org.orekit.bodies.GeodeticPoint;
import org.orekit.errors.OrekitException;
/** Interface defining the aiming direction of {@link Tile tiles}.
* @author Luc Maisonobe
*/
public interface TileAiming {
/** Find the along tile direction for tessellation at specified point.
* @param point point on the ellipsoid (Cartesian coordinates)
* @param gp point on the ellipsoid (geodetic coordinates)
* @return normalized along tile direction
* @exception OrekitException if direction cannot be estimated
*/
Vector3D alongTileDirection(Vector3D point, GeodeticPoint gp) throws OrekitException;
}