com.bbn.openmap.dataAccess.mapTile
Interface EmptyTileHandler

All Known Implementing Classes:

MapTileMaker, ShpFileEmptyTileHandler, SimpleEmptyTileHandler, WholeWorldTileHandler

public interface EmptyTileHandler

An EmptyTileHandler is a class that helps the MapTileFactory figure out what to do with non-existent map tiles.

Author:

ddietrick

Method Summary

java.awt.image.BufferedImage

getImageForEmptyTile(java.lang.String imagePath, int x, int y, int zoomLevel, MapTileCoordinateTransform mtcTransform, Projection proj) The main call from the MapTileFactory to return something for the given missing tile.

Method Detail

getImageForEmptyTile

java.awt.image.BufferedImage getImageForEmptyTile(java.lang.String imagePath,
                                                  int x,
                                                  int y,
                                                  int zoomLevel,
                                                  MapTileCoordinateTransform mtcTransform,
                                                  Projection proj)

The main call from the MapTileFactory to return something for the given missing tile.

Parameters:

imagePath - the path of the missing tile that is going to be used as cache lookup later.

x - the uv x coordinate of the tile.

y - the uv y coordinate of the tile.

zoomLevel - the zoom level of the tile.

mtcTransform - the transform that converts x,y coordinates to lat/lon and describes the layout of the uv tile coordinates.

proj - the map projection, in case that matters what should be returned for the empty tile.

Returns:

BufferedImage for image tile