edu.colorado.cires.cmg.mvt.encoding

Class GeomCmdHdr

java.lang.Object

edu.colorado.cires.cmg.mvt.encoding.GeomCmdHdr

public final class GeomCmdHdr
extends Object

Utilities for working with geometry command headers.

See Also:

GeomCmd

Field Summary

Fields

Modifier and Type	Field and Description
static int	CMD_HDR_LEN_MAX Maximum allowed 'command header' length value.

Constructor Summary

Constructors

Constructor and Description
GeomCmdHdr()

Method Summary

Modifier and Type	Method and Description
static int	closePathCmdHdr()
static int	cmdHdr(GeomCmd cmd, int length) Encodes a 'command header' with the first 3 LSB as the command id, the remaining bits as the command length.
static GeomCmd	getCmd(int cmdHdr) Get the id component from the 'command header' integer, then find the GeomCmd with a matching id.
static int	getCmdId(int cmdHdr) Get the id component from the 'command header' integer.
static int	getCmdLength(int cmdHdr) Get the length component from the 'command header' integer.

Methods inherited from class java.lang.Object

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

Field Detail

CMD_HDR_LEN_MAX

public static final int CMD_HDR_LEN_MAX

Maximum allowed 'command header' length value.

Constructor Detail

GeomCmdHdr

public GeomCmdHdr()

Method Detail

cmdHdr

public static int cmdHdr(GeomCmd cmd,
                         int length)

Encodes a 'command header' with the first 3 LSB as the command id, the remaining bits as the command length. See the vector-tile-spec for details.

Parameters:

cmd - command to execute

length - how many times the command is repeated

Returns:

encoded 'command header' integer

getCmdLength

public static int getCmdLength(int cmdHdr)

Get the length component from the 'command header' integer.

Parameters:

cmdHdr - encoded 'command header' integer

Returns:

command length

getCmdId

public static int getCmdId(int cmdHdr)

Get the id component from the 'command header' integer.

Parameters:

cmdHdr - encoded 'command header' integer

Returns:

command id

getCmd

public static GeomCmd getCmd(int cmdHdr)

Get the id component from the 'command header' integer, then find the GeomCmd with a matching id.

Parameters:

cmdHdr - encoded 'command header' integer

Returns:

command with matching id, or null if a match could not be made

closePathCmdHdr

public static int closePathCmdHdr()

Returns:

encoded 'command header' integer for GeomCmd.ClosePath.