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35 lines
800 B
C++
35 lines
800 B
C++
#include <scwx/qt/util/geographic_lib.hpp>
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namespace scwx
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{
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namespace qt
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{
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namespace util
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{
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namespace GeographicLib
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{
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const ::GeographicLib::Geodesic& DefaultGeodesic()
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{
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static const ::GeographicLib::Geodesic geodesic_ {
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::GeographicLib::Constants::WGS84_a(),
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::GeographicLib::Constants::WGS84_f()};
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return geodesic_;
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}
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boost::units::quantity<boost::units::si::length>
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GetDistance(double lat1, double lon1, double lat2, double lon2)
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{
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double distance;
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util::GeographicLib::DefaultGeodesic().Inverse(
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lat1, lon1, lat2, lon2, distance);
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return static_cast<boost::units::quantity<boost::units::si::length>>(
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distance * boost::units::si::meter_base_unit::unit_type());
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}
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} // namespace GeographicLib
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} // namespace util
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} // namespace qt
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} // namespace scwx
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