Marble::GeoSceneMercatorTileProjection

#include <GeoSceneMercatorTileProjection.h>

Inheritance diagram for Marble::GeoSceneMercatorTileProjection:

Public Member Functions
	GeoSceneMercatorTileProjection ()

GeoDataLatLonBox	geoCoordinates (const TileId &tileId) const

GeoDataLatLonBox	geoCoordinates (int zoomLevel, int x, int y) const override

QRect	tileIndexes (const GeoDataLatLonBox &latLonBox, int zoomLevel) const override

GeoSceneAbstractTileProjection::Type	type () const override

Public Member Functions inherited from Marble::GeoSceneAbstractTileProjection
	GeoSceneAbstractTileProjection ()

GeoDataLatLonBox	geoCoordinates (const TileId &tileId) const

int	levelZeroColumns () const

int	levelZeroRows () const

void	setLevelZeroColumns (int levelZeroColumns)

void	setLevelZeroRows (int levelZeroRows)

Additional Inherited Members
Public Types inherited from Marble::GeoSceneAbstractTileProjection
enum	Type { Equirectangular , Mercator }

Detailed Description

Converts the x and y indices of tiles to and from geo coordinates.

For tiles of maps in Mercator projection.

Tiles do have the same width and the same height per zoomlevel. The number of tiles per dimension is twice that of the previous lower zoomlevel. The indexing is done in x dimension eastwards, with the first tiles beginning at -180 degree and an x value of 0 and the last tiles ending at +180 degree, in y dimension southwards with the first tiles beginning at +85.05113 degree and a y value of 0 and the last tiles ending at -85.05113 degree.

NOTE: The method tileIndexes() handles any latitude value >= +85.0 degree as exactly +85.0 degree and any latitude value <= -85.0 as exactly -85.0 degree. So for higher zoomlevels the outermost tiles will be masked by that and not included in any results.

Definition at line 30 of file GeoSceneMercatorTileProjection.h.