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 "datatypes.h"
0011
0012 #include <cmath>
0013
0014 namespace OSM {
0015
0016 /** Degree to radian conversion. */
0017 constexpr inline double degToRad(double deg)
0018 {
0019     return deg / 180.0 * M_PI;
0020 }
0021 /** Radian to degree conversion. */
0022 constexpr inline double radToDeg(double rad)
0023 {
0024     return rad / M_PI * 180.0;
0025 }
0026
0027 /** Distance between two coordinates. */
0028 double distance(double lat1, double lon1, double lat2, double lon2);
0029
0030 /** Distance between @p coord1 and @p coord2 in meter. */
0031 double distance(Coordinate coord1, Coordinate coord2);
0032
0033 /** Distance in meters between a line segment defined by @p l1 and @p l2 to a point @p p. */
0034 double distance(Coordinate l1, Coordinate l2, Coordinate p);
0035
0036 /** Distance between the given polygon and coordinate, in meter. */
0037 double distance(const std::vector<const OSM::Node*> &path, Coordinate coord);
0038
0039 }
0040
0041 #endif // OSM_GEOMATH_H