org.osmdroid.util

Class TileSystem

java.lang.Object

org.osmdroid.util.TileSystem

public final class TileSystem
extends Object

Proxy class for TileSystem. For coordinate conversions (tile to lat/lon and reverse) TileSystem only accepts input parameters within certain ranges and crops any values outside of it. For lat/lon the range is ~(-85,+85) / (-180,+180) and for tile coordinates (0,mapsize-1). Under certain conditions osmdroid creates values outside of these ranges, for example when zooming out and displaying the earth more that once side by side or when scrolling across the 180 degree longitude (international date line). This class fixes this by wrapping input coordinates into a valid range by adding/subtracting the valid span. Example: longitude +185 => -175

Author:

Oliver Seiler

Constructor Summary

Constructors

Constructor and Description
TileSystem()

Method Summary

Methods

Modifier and Type	Method and Description
static int	getTileSize()
static double	GroundResolution(double latitude, int levelOfDetail)
static android.graphics.Point	LatLongToPixelXY(double latitude, double longitude, int levelOfDetail, android.graphics.Point reuse)
static double	MapScale(double latitude, int levelOfDetail, int screenDpi)
static int	MapSize(int levelOfDetail)
static GeoPoint	PixelXYToLatLong(int pixelX, int pixelY, int levelOfDetail, GeoPoint reuse)
static android.graphics.Point	PixelXYToTileXY(int pixelX, int pixelY, android.graphics.Point reuse)
static android.graphics.Point	QuadKeyToTileXY(String quadKey, android.graphics.Point reuse)
static void	setTileSize(int tileSize)
static android.graphics.Point	TileXYToPixelXY(int tileX, int tileY, android.graphics.Point reuse)
static String	TileXYToQuadKey(int tileX, int tileY, int levelOfDetail)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TileSystem

public TileSystem()

Method Detail

setTileSize

public static void setTileSize(int tileSize)

See Also:

TileSystem.setTileSize(int)

getTileSize

public static int getTileSize()

See Also:

TileSystem.getTileSize()

MapSize

public static int MapSize(int levelOfDetail)

See Also:

TileSystem.MapSize(int)

GroundResolution

public static double GroundResolution(double latitude,
                      int levelOfDetail)

See Also:

TileSystem.GroundResolution(double, int)

MapScale

public static double MapScale(double latitude,
              int levelOfDetail,
              int screenDpi)

See Also:

TileSystem.MapScale(double, int, int)

LatLongToPixelXY

public static android.graphics.Point LatLongToPixelXY(double latitude,
                                      double longitude,
                                      int levelOfDetail,
                                      android.graphics.Point reuse)

See Also:

TileSystem.LatLongToPixelXY(double, double, int, Point)

PixelXYToLatLong

public static GeoPoint PixelXYToLatLong(int pixelX,
                        int pixelY,
                        int levelOfDetail,
                        GeoPoint reuse)

See Also:

TileSystem.PixelXYToLatLong(int, int, int, GeoPoint)

PixelXYToTileXY

public static android.graphics.Point PixelXYToTileXY(int pixelX,
                                     int pixelY,
                                     android.graphics.Point reuse)

See Also:

TileSystem.PixelXYToTileXY(int, int, Point)

TileXYToPixelXY

public static android.graphics.Point TileXYToPixelXY(int tileX,
                                     int tileY,
                                     android.graphics.Point reuse)

See Also:

TileSystem.TileXYToPixelXY(int, int, Point)

TileXYToQuadKey

public static String TileXYToQuadKey(int tileX,
                     int tileY,
                     int levelOfDetail)

See Also:

TileSystem.TileXYToQuadKey(int, int, int)

QuadKeyToTileXY

public static android.graphics.Point QuadKeyToTileXY(String quadKey,
                                     android.graphics.Point reuse)

See Also:

TileSystem.QuadKeyToTileXY(String, Point)