GPXSee/src/map/osm.h

#ifndef OSM_H
#define OSM_H

#include <QPointF>
#include <common/coordinates.h>
#include <common/rectc.h>
#include <common/range.h>

namespace OSM
{
	static const RectC BOUNDS(Coordinates(-180, 85.0511),
	  Coordinates(180, -85.0511));
	static const Range ZOOMS(0, 19);

	QPointF ll2m(const Coordinates &c);
	Coordinates m2ll(const QPointF &p);
	QPoint mercator2tile(const QPointF &m, int zoom);
	QPointF tile2mercator(const QPoint &p, int zoom);
	qreal zoom2scale(int zoom, int tileSize);
	int scale2zoom(qreal scale, int tileSize);
	qreal resolution(const QPointF &p, int zoom, int tileSize);

	inline Coordinates tile2ll(const QPoint &p, int zoom)
	  {return m2ll(tile2mercator(p, zoom));}
	inline QPoint ll2tile(const Coordinates &c, int zoom)
	  {return mercator2tile(ll2m(c), zoom);}
}

#endif // OSM_H