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23 lines
581 B
C++
23 lines
581 B
C++
#include <cmath>
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#include "common/coordinates.h"
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#include "common/wgs84.h"
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#include "webmercator.h"
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PointD WebMercator::ll2xy(const Coordinates &c) const
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{
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return PointD(deg2rad(c.lon()) * WGS84_RADIUS,
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log(tan(M_PI_4 + deg2rad(c.lat())/2.0)) * WGS84_RADIUS);
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}
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Coordinates WebMercator::xy2ll(const PointD &p) const
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{
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return Coordinates(rad2deg(p.x() / WGS84_RADIUS),
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rad2deg(2.0 * atan(exp(p.y() / WGS84_RADIUS)) - M_PI_2));
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}
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bool WebMercator::operator==(const CT &ct) const
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{
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const WebMercator *other = dynamic_cast<const WebMercator*>(&ct);
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return (other != 0);
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}
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