com.threerings.media.tile
Class TileUtil

java.lang.Object
  com.threerings.media.tile.TileUtil

public class TileUtil
extends Object

Miscellaneous utility routines for working with tiles.

Field Summary

protected static long	ADDEND
protected static long	MASK
protected static long	MULTIPLIER

Constructor Summary

TileUtil()

Method Summary

static int	getFQTileId(int tileSetId, int tileIndex) Generates a fully-qualified tile id given the supplied tileset id and tile index.
static int	getTileHash(int x, int y) Compute some hash value for "randomizing" tileset picks based on x and y coordinates.
static int	getTileIndex(int fqTileId) Extracts the tile index from the supplied fully qualified tile id.
static int	getTileSetId(int fqTileId) Extracts the tile set id from the supplied fully qualified tile id.

Methods inherited from class java.lang.Object

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

Field Detail

MULTIPLIER

protected static final long MULTIPLIER

See Also:

Constant Field Values

ADDEND

protected static final long ADDEND

See Also:

Constant Field Values

MASK

protected static final long MASK

See Also:

Constant Field Values

Constructor Detail

TileUtil

public TileUtil()

Method Detail

getFQTileId

public static int getFQTileId(int tileSetId,
                              int tileIndex)

Generates a fully-qualified tile id given the supplied tileset id and tile index.

getTileSetId

public static int getTileSetId(int fqTileId)

Extracts the tile set id from the supplied fully qualified tile id.

getTileIndex

public static int getTileIndex(int fqTileId)

Extracts the tile index from the supplied fully qualified tile id.

getTileHash

public static int getTileHash(int x,
                              int y)

Compute some hash value for "randomizing" tileset picks based on x and y coordinates.

Returns:

a positive, seemingly random number based on x and y.