Package org.hortonmachine.gears.utils.images

Class TileUtilities

java.lang.Object

org.hortonmachine.gears.utils.images.TileUtilities

public class TileUtilities
extends Object

An utility class for tile handling.

Since:

0.9.7

Author:

Andrea Antonello (www.hydrologis.com)

Field Summary

Fields

Modifier and Type	Field	Description
static Color	transparent

Constructor Summary

Constructors

Constructor	Description
TileUtilities()

Method Summary

Modifier and Type	Method	Description
static BufferedImage	getTileFromDifferentZoomlevel(GeopackageCommonDb gpkgDb, String tableName, int x, int y, int zoom, int tileSize, int otherZoomLevel)	Produce a geopackage tile for a different zoomlevel applying patching/clipping and scaling.

Methods inherited from class java.lang.Object

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

Field Detail

transparent

public static final Color transparent

Constructor Detail

TileUtilities

public TileUtilities()

Method Detail

getTileFromDifferentZoomlevel

public static BufferedImage getTileFromDifferentZoomlevel(GeopackageCommonDb gpkgDb,
                                                          String tableName,
                                                          int x,
                                                          int y,
                                                          int zoom,
                                                          int tileSize,
                                                          int otherZoomLevel)
                                                   throws Exception

Produce a geopackage tile for a different zoomlevel applying patching/clipping and scaling.

This can be used to get a tile for a zoomlevel, in which there are no data.

Parameters:

gpkgDb - the database.

tableName - the name of the table to extract from.

x - the original tile x.

y - the original tile y.

zoom - the original tile zoom level.

tileSize - the tile size.

otherZoomLevel - the zoomlevel to extract the new data for.

Returns:

the tile image or null if none is available..

Throws:

Exception