Package com.massifmaps.datasources

Class MergedMBVTTileDataSource

java.lang.Object

com.massifmaps.datasources.TileDataSource

com.massifmaps.datasources.MergedMBVTTileDataSource

public class MergedMBVTTileDataSource
extends TileDataSource

A tile data source that merges two MBVT/protobuf data sources into one.
It is assumed that the layer ids from the two sources are distinct.

Constructor Summary

Constructors

Constructor	Description
MergedMBVTTileDataSource(TileDataSource dataSource1, TileDataSource dataSource2)	Constructs a new MergedMBVTTileDataSource tile data source object.

Method Summary

Modifier and Type	Method	Description
MapBounds	getDataExtent()	Returns the extent of the tiles in this data source. The bounds are in coordinate system of the projection of the data source.
int	getMaxZoom()	Returns the maximum zoom level supported by this data source.
int	getMinZoom()	Returns the minimum zoom level supported by this data source.
String	getTileMask()
TileData	loadTile(MapTile tile)	Loads the specified tile. Note: the tile coordinate system used here is vertically flipped relative to layer tile coordinate system.

Methods inherited from class com.massifmaps.datasources.TileDataSource

buildTagValues, containsMetaDataKey, getContainerMetaData, getMaxOverzoomLevel, getMaxZoomWithOverzoom, getMetaData, getMetaDataElement, getProjection, isMaxOverzoomLevelSet, notifyTilesChanged, setMaxOverzoomLevel, setMetaData, setMetaDataElement

Methods inherited from class java.lang.Object

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

Constructor Details

MergedMBVTTileDataSource

public MergedMBVTTileDataSource(TileDataSource dataSource1,
 TileDataSource dataSource2)

Constructs a new MergedMBVTTileDataSource tile data source object.

Parameters:

dataSource1 - First data source to be merged

dataSource2 - Second data source to be merged

Method Details

getMinZoom

public int getMinZoom()

Description copied from class: TileDataSource

Returns the minimum zoom level supported by this data source.

Overrides:

getMinZoom in class TileDataSource

Returns:

The minimum zoom level supported (inclusive).

getMaxZoom

public int getMaxZoom()

Description copied from class: TileDataSource

Returns the maximum zoom level supported by this data source.

Overrides:

getMaxZoom in class TileDataSource

Returns:

The maximum zoom level supported (exclusive).

getTileMask

public String getTileMask()

getDataExtent

public MapBounds getDataExtent()

Description copied from class: TileDataSource

Returns the extent of the tiles in this data source.
The bounds are in coordinate system of the projection of the data source.

Overrides:

getDataExtent in class TileDataSource

Returns:

The extent of the data source.

loadTile

public TileData loadTile(MapTile tile)

Description copied from class: TileDataSource

Loads the specified tile.
Note: the tile coordinate system used here is vertically flipped relative to layer tile coordinate system.

Overrides:

loadTile in class TileDataSource

Parameters:

tile - The tile to load.

Returns:

The tile data. If the tile is not available, null may be returned.