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org.jdesktop.swingx.mapviewer
[Java] Class TileFactory

java.lang.Object
  org.jdesktop.swingx.mapviewer.TileFactory

public abstract class TileFactory
extends Object

A class that can produce tiles and convert coordinates to pixels

Authors:
joshy

Field Summary
private TileFactoryInfo info

 
Constructor Summary
protected TileFactory(TileFactoryInfo info)

Creates a new instance of TileFactory
 
Method Summary
Point2D geoToPixel(GeoPosition c, int zoomLevel)

Convert a GeoPosition to a pixel position in the world bitmap a the specified zoom level.
TileFactoryInfo getInfo()

Get the TileFactoryInfo describing this TileFactory
Dimension getMapSize(int zoom)

Returns a Dimension containing the width and height of the map, in tiles at the current zoom level.

Tile getTile(int x, int y, int zoom)

Return the Tile at a given TilePoint and zoom level
int getTileSize(int zoom)

Gets the size of an edge of a tile in pixels at the current zoom level.

GeoPosition pixelToGeo(Point2D pixelCoordinate, int zoom)

Convert a pixel in the world bitmap at the specified zoom level into a GeoPosition
protected void startLoading(Tile tile)

Override this method to load the tile using, for example, an ExecutorService.
 
Methods inherited from class Object
wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll
 

Field Detail

info

private TileFactoryInfo info

 
Constructor Detail

TileFactory

protected TileFactory(TileFactoryInfo info)
Creates a new instance of TileFactory
Parameters:
info - a TileFactoryInfo to configure this TileFactory

 
Method Detail

geoToPixel

public Point2D geoToPixel(GeoPosition c, int zoomLevel)
Convert a GeoPosition to a pixel position in the world bitmap a the specified zoom level.
Parameters:
c - a GeoPosition
zoom - the zoom level to extract the pixel coordinate for
Returns:
the pixel point

getInfo

public TileFactoryInfo getInfo()
Get the TileFactoryInfo describing this TileFactory
Returns:
a TileFactoryInfo

getMapSize

public Dimension getMapSize(int zoom)
Returns a Dimension containing the width and height of the map, in tiles at the current zoom level. So a Dimension that returns 10x20 would be 10 tiles wide and 20 tiles tall. These values can be multipled by getTileSize() to determine the pixel width/height for the map at the given zoom level
Parameters:
zoom - the current zoom level
Returns:
the size of the world bitmap in tiles

getTile

public Tile getTile(int x, int y, int zoom)
Return the Tile at a given TilePoint and zoom level
Parameters:
tilePoint - the tilePoint
zoom - the current zoom level
Returns:
the tile that is located at the given tilePoint for this zoom level. For example, if getMapSize() returns 10x20 for this zoom, and the tilePoint is (3,5), then the appropriate tile will be located and returned. This method must not return null. However, it can return dummy tiles that contain no data if it wants. This is appropriate, for example, for tiles which are outside of the bounds of the map and if the factory doesn't implement wrapping.

getTileSize

public int getTileSize(int zoom)
Gets the size of an edge of a tile in pixels at the current zoom level. Tiles must be square.
Parameters:
zoom - the current zoom level
Returns:
the size of an edge of a tile in pixels

pixelToGeo

public GeoPosition pixelToGeo(Point2D pixelCoordinate, int zoom)
Convert a pixel in the world bitmap at the specified zoom level into a GeoPosition
Parameters:
pixelCoordinate - a Point2D representing a pixel in the world bitmap
zoom - the zoom level of the world bitmap
Returns:
the converted GeoPosition

startLoading

protected void startLoading(Tile tile)
Override this method to load the tile using, for example, an ExecutorService.
Parameters:
tile - The tile to load.

 

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