mirror of
https://codeberg.org/comaps/comaps
synced 2025-12-19 04:53:36 +00:00
30718e106e
* ADL for AlmostEqual* and use math:: instead of base:: Signed-off-by: Alexander Borsuk <me@alex.bio>
30 lines
908 B
C++
30 lines
908 B
C++
#include "geometry/distance_on_sphere.hpp"
|
|
|
|
#include "base/math.hpp"
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
|
|
namespace ms
|
|
{
|
|
double DistanceOnSphere(double lat1Deg, double lon1Deg, double lat2Deg, double lon2Deg)
|
|
{
|
|
double const lat1 = math::DegToRad(lat1Deg);
|
|
double const lat2 = math::DegToRad(lat2Deg);
|
|
double const dlat = sin((lat2 - lat1) * 0.5);
|
|
double const dlon = sin((math::DegToRad(lon2Deg) - math::DegToRad(lon1Deg)) * 0.5);
|
|
double const y = dlat * dlat + dlon * dlon * cos(lat1) * cos(lat2);
|
|
return 2.0 * atan2(sqrt(y), sqrt(std::max(0.0, 1.0 - y)));
|
|
}
|
|
|
|
double DistanceOnEarth(double lat1Deg, double lon1Deg, double lat2Deg, double lon2Deg)
|
|
{
|
|
return kEarthRadiusMeters * DistanceOnSphere(lat1Deg, lon1Deg, lat2Deg, lon2Deg);
|
|
}
|
|
|
|
double DistanceOnEarth(LatLon const & ll1, LatLon const & ll2)
|
|
{
|
|
return DistanceOnEarth(ll1.m_lat, ll1.m_lon, ll2.m_lat, ll2.m_lon);
|
|
}
|
|
} // namespace ms
|