com.nutiteq.utils

Class TileUtils

java.lang.Object

com.nutiteq.utils.TileUtils

public class TileUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
TileUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static double[]	MetersToLatLon(double mx, double my) Converts XY point from Spherical Mercator EPSG:900913 to lat/lon in WGS84 Datum
static int[]	MetersToPixels(double mx, double my, int zoom) Converts EPSG:900913 to pyramid pixel coordinates in given zoom level
static com.nutiteq.components.MapPos	MetersToTile(com.nutiteq.components.MapPos mp, int zoom) Returns tile for given Mercator coordinates
static double[]	PixelsToMeters(double px, double py, int zoom) Converts pixel coordinates in given zoom level of pyramid to EPSG:900913
static com.nutiteq.components.MapPos	PixelsToTile(int px, int py, int zoom) Returns a tile covering region in given pixel coordinates
static double	Resolution(int zoom) Resolution (meters/pixel) for given zoom level (measured at Equator)
static com.nutiteq.components.Envelope	TileBounds(int tx, int ty, int zoom) Deprecated. use TileBounds with projection instead
static com.nutiteq.components.Envelope	TileBounds(int tx, int ty, int zoom, com.nutiteq.projections.Projection proj) Get bounds of tile

Methods inherited from class java.lang.Object

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

Constructor Detail

TileUtils

public TileUtils()

Method Detail

MetersToTile

public static com.nutiteq.components.MapPos MetersToTile(com.nutiteq.components.MapPos mp,
                                         int zoom)

Returns tile for given Mercator coordinates

Returns:

PixelsToTile

public static com.nutiteq.components.MapPos PixelsToTile(int px,
                                         int py,
                                         int zoom)

Returns a tile covering region in given pixel coordinates

Parameters:

px -

py -

zoom -

Returns:

MetersToPixels

public static int[] MetersToPixels(double mx,
                   double my,
                   int zoom)

Converts EPSG:900913 to pyramid pixel coordinates in given zoom level

Parameters:

mx -

my -

zoom -

Returns:

Resolution

public static double Resolution(int zoom)

Resolution (meters/pixel) for given zoom level (measured at Equator)

Returns:

TileBounds

public static com.nutiteq.components.Envelope TileBounds(int tx,
                                         int ty,
                                         int zoom)

Deprecated. use TileBounds with projection instead

Returns bounds of the given tile in EPSG:900913 (EPSG:3857) coordinates

Parameters:

tx -

ty - (bottom-top)

zoom -

Returns:

TileBounds

public static com.nutiteq.components.Envelope TileBounds(int tx,
                                         int ty,
                                         int zoom,
                                         com.nutiteq.projections.Projection proj)

Get bounds of tile

Parameters:

tx - tile x (left-right)

ty - tile y (top-bottom)

zoom - zoom (0 = world)

proj -

Returns:

bounds, in given projection

MetersToLatLon

public static double[] MetersToLatLon(double mx,
                      double my)

Converts XY point from Spherical Mercator EPSG:900913 to lat/lon in WGS84 Datum

Returns:

PixelsToMeters

public static double[] PixelsToMeters(double px,
                      double py,
                      int zoom)

Converts pixel coordinates in given zoom level of pyramid to EPSG:900913

Returns: