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38 lines
947 B
C++
38 lines
947 B
C++
#include "rd.h"
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#include "wgs84.h"
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#include "coordinates.h"
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qreal Coordinates::distanceTo(const Coordinates &c) const
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{
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qreal dLat = deg2rad(c.lat() - _lat);
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qreal dLon = deg2rad(c.lon() - _lon);
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qreal 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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QPointF Coordinates::toMercator() const
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{
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return QPointF(_lon, rad2deg(log(tan(M_PI/4.0 + deg2rad(_lat)/2.0))));
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}
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Coordinates Coordinates::fromMercator(const QPointF &m)
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{
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return Coordinates(m.x(), rad2deg(2 * atan(exp(deg2rad(m.y()))) - M_PI/2));
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}
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bool operator==(const Coordinates &c1, const Coordinates &c2)
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{
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return (c1.lat() == c2.lat() && c1.lon() == c2.lon());
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}
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QDebug operator<<(QDebug dbg, const Coordinates &coordinates)
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{
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dbg.nospace() << "Coordinates(" << coordinates.lon() << ", "
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<< coordinates.lat() << ")";
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return dbg.maybeSpace();
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}
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