src/osm/geomath.h

0001 /*
0002     SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org>
0003
0004     SPDX-License-Identifier: LGPL-2.0-or-later
0005 */
0006
0007 #ifndef OSM_GEOMATH_H
0008 #define OSM_GEOMATH_H
0009
0010 #include "kosm_export.h"
0011
0012 #include "datatypes.h"
0013
0014 #include <cmath>
0015
0016 namespace OSM {
0017
0018 /** Degree to radian conversion. */
0019 [[nodiscard]] constexpr inline double degToRad(double deg)
0020 {
0021     return deg / 180.0 * M_PI;
0022 }
0023 /** Radian to degree conversion. */
0024 [[nodiscard]] constexpr inline double radToDeg(double rad)
0025 {
0026     return rad / M_PI * 180.0;
0027 }
0028
0029 /** Distance between two coordinates. */
0030 [[nodiscard]] KOSM_EXPORT double distance(double lat1, double lon1, double lat2, double lon2);
0031
0032 /** Distance between @p coord1 and @p coord2 in meter. */
0033 [[nodiscard]] KOSM_EXPORT double distance(Coordinate coord1, Coordinate coord2);
0034
0035 /** Distance in meters between a line segment defined by @p l1 and @p l2 to a point @p p. */
0036 [[nodiscard]] double distance(Coordinate l1, Coordinate l2, Coordinate p);
0037
0038 /** Distance between the given polygon and coordinate, in meter. */
0039 [[nodiscard]] KOSM_EXPORT double distance(const std::vector<const OSM::Node*> &path, Coordinate coord);
0040
0041 }
0042
0043 #endif // OSM_GEOMATH_H