de.grogra.imp3d.gl20
Class GL20Const

java.lang.Object
  de.grogra.imp3d.gl20.GL20Const

public class GL20Const
extends java.lang.Object

Field Summary

static int	ALL_CHANGED a mask that indicates that ALL has changed
static Matrix4d	identityMatrix4d a identity matrix 4x4
static int	INVALID_ID an invalid id

Constructor Summary

GL20Const()

Method Summary

static int	getFirstBitPosition(int value) return the first appearance of a set bit starting at the LSB
static boolean	isPowerOf2(int value) check if a given value is a number in Power-of-2 format

Methods inherited from class java.lang.Object

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

Field Detail

ALL_CHANGED

public static final int ALL_CHANGED

a mask that indicates that ALL has changed

See Also:

Constant Field Values

identityMatrix4d

public static final Matrix4d identityMatrix4d

a identity matrix 4x4

INVALID_ID

public static final int INVALID_ID

an invalid id

See Also:

Constant Field Values

Constructor Detail

GL20Const

public GL20Const()

Method Detail

getFirstBitPosition

public static final int getFirstBitPosition(int value)

return the first appearance of a set bit starting at the LSB

Parameters:

value - the value that should checked

Returns:

-1 no bit is set otherwise position of the first set bit

isPowerOf2

public static final boolean isPowerOf2(int value)

check if a given value is a number in Power-of-2 format

Parameters:

value - number that should checked

Returns:

true given number is in Power-of-2 format false given number is not Power-of-2 format