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21 lines
559 B
C++
21 lines
559 B
C++
#include "wgs84.h"
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#include "coordinates.h"
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double Coordinates::distanceTo(const Coordinates &c) const
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{
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double dLat = deg2rad(c.lat() - _lat);
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double dLon = deg2rad(c.lon() - _lon);
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double a = pow(sin(dLat / 2.0), 2.0)
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+ cos(deg2rad(_lat)) * cos(deg2rad(c.lat())) * pow(sin(dLon / 2.0), 2.0);
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return (WGS84_RADIUS * (2.0 * atan2(sqrt(a), sqrt(1.0 - a))));
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}
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const Coordinates &c)
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{
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dbg.nospace() << "Coordinates(" << c.lon() << ", " << c.lat() << ")";
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return dbg.space();
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}
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#endif // QT_NO_DEBUG
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