TileMath.cc File Reference

#include "TileMath.h"
#include <QtCore/QDebug>
#include <QtCore/QtMath>
#include <algorithm>
#include <cmath>

Include dependency graph for TileMath.cc:

Go to the source code of this file.

Namespaces
namespace	TileMath

Functions
QDebug	TileMath::operator<< (QDebug debug, const TileKey &key)
	Streams as slippy "zoom/x/y" notation for logging.
double	TileMath::worldSize ()
	Full mercator world extent (2*pi*R) in world meters.
QPointF	TileMath::geoToWorld (const QGeoCoordinate &coord)
	Geo -> world meters. Latitude is clamped to +/-kMaxLatitude.
QGeoCoordinate	TileMath::worldToGeo (const QPointF &world)
	World meters -> geo (altitude 0)
double	TileMath::mercatorScale (double latitude)
bool	TileMath::isValidKey (const TileKey &key)
	True if zoom is within [kMinZoom, kMaxZoom] and x/y address a tile at that zoom.
double	TileMath::tileSpanAtZoom (int zoom)
	Edge length of one tile at zoom, in world meters.
QPointF	TileMath::tileMinCorner (const TileKey &key)
	South-west (minimum x/y) corner of a tile in world meters.
TileKey	TileMath::tileForWorld (const QPointF &world, int zoom)
	Tile containing a world point. World coordinates are clamped to the world extent.
double	TileMath::metersPerPixelAtZoom (int zoom)
	World meters spanned by one pixel of a kTilePixels tile at zoom (equator)
int	TileMath::zoomForMetersPerPixel (double metersPerPixel)
	Smallest zoom whose resolution is at least as fine as metersPerPixel (clamped to valid range)