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14 lines
324 B
C++
14 lines
324 B
C++
#include <cmath>
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#include "rd.h"
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#include "mercator.h"
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QPointF Mercator::ll2xy(const Coordinates &c) const
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{
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return QPointF(c.lon(), rad2deg(log(tan(M_PI/4.0 + deg2rad(c.lat())/2.0))));
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}
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Coordinates Mercator::xy2ll(const QPointF &p) const
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{
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return Coordinates(p.x(), rad2deg(2 * atan(exp(deg2rad(p.y()))) - M_PI/2));
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}
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