#include <QtGlobal>
#include <GeoDataCoordinates.h>
#include <math.h>

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Functions
qreal	Marble::distanceSphere (qreal lon1, qreal lat1, qreal lon2, qreal lat2)

qreal	Marble::distanceSphere (const GeoDataCoordinates &coords1, const GeoDataCoordinates &coords2)

qreal	Marble::distanceSphereApprox (qreal lon1, qreal lat1, qreal lon2, qreal lat2)

qreal	gd (qreal x)

qreal	Marble::gdInv (qreal x)

Function Documentation

qreal gd ( qreal x )

inline

This method is a fast Mac Laurin power series approximation of the Gudermannian.

The Gudermannian gives the latitude in the Mercator projection in terms of the vertical position y. See: http://en.wikipedia.org/wiki/Mercator_projection

Definition at line 114 of file MarbleMath.h.

marble