C# Class Axiom.Media.Bitwise

Class for manipulating bit patterns.

Datei anzeigen Open project: WolfgangSt/axiom Class Usage Examples

Public Methods

Method	Description
FirstPO2From ( uint n ) : uint	Returns the closest power-of-two number greater or equal to value. 0 and 1 are powers of two, so firstPO2From(0)==0 and firstPO2From(1)==1.
FixedToByteFixed ( uint value, int p ) : byte	Convert N bit colour channel value to 8 bits, and return as a byte. It fills P bits with thebit pattern repeated. (this is /((1<<n)-1) in fixed point)
FixedToFixed ( uint value, int n, int p ) : uint	Convert N bit colour channel value to P bits. It fills P bits with the bit pattern repeated. (this is /((1<<n)-1) in fixed point)
FixedToFloat ( uint value, int bits ) : float	Fixed point to float
FloatToByteFixed ( float value ) : byte	Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to an 8-bit integer, and return as a byte.
FloatToFixed ( float value, int bits ) : uint	Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to integer of a certain number of bits. Works for any value of bits between 0 and 31.
FloatToHalf ( float f ) : ushort	Convert a float32 to a float16 (NV_half_float) Courtesy of OpenEXR
FloatToHalfI ( uint i ) : ushort	Converts float in uint format to a a half in ushort format
HalfToFloat ( ushort y ) : float	Convert a float16 (NV_half_float) to a float32 Courtesy of OpenEXR
HalfToFloatI ( ushort y ) : uint	Converts a half in ushort format to a float in uint format
IntRead ( IntPtr src, int n ) : uint	Read a n*8 bits integer value to memory in native endian.
IntWrite ( IntPtr dest, int n, uint value ) : void
IsPow2 ( int number ) : bool	checks if a number is a power of 2
MostSignificantBitSet ( uint value ) : uint	Returns the most significant bit set in a value.

Method Details

FirstPO2From() public static method

Returns the closest power-of-two number greater or equal to value.

0 and 1 are powers of two, so firstPO2From(0)==0 and firstPO2From(1)==1.

public static FirstPO2From ( uint n ) : uint
n	uint
return	uint

FixedToByteFixed() public static method

Convert N bit colour channel value to 8 bits, and return as a byte. It fills P bits with thebit pattern repeated. (this is /((1<<n)-1) in fixed point)

public static FixedToByteFixed ( uint value, int p ) : byte
value	uint
p	int
return	byte

FixedToFixed() public static method

Convert N bit colour channel value to P bits. It fills P bits with the bit pattern repeated. (this is /((1<<n)-1) in fixed point)

public static FixedToFixed ( uint value, int n, int p ) : uint
value	uint
n	int
p	int
return	uint

FixedToFloat() public static method

Fixed point to float

public static FixedToFloat ( uint value, int bits ) : float
value	uint
bits	int
return	float

FloatToByteFixed() public static method

Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to an 8-bit integer, and return as a byte.

public static FloatToByteFixed ( float value ) : byte
value	float
return	byte

FloatToFixed() public static method

Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to integer of a certain number of bits. Works for any value of bits between 0 and 31.

public static FloatToFixed ( float value, int bits ) : uint
value	float
bits	int
return	uint

FloatToHalf() public static method

Convert a float32 to a float16 (NV_half_float) Courtesy of OpenEXR

public static FloatToHalf ( float f ) : ushort
f	float
return	ushort

FloatToHalfI() public static method

Converts float in uint format to a a half in ushort format

public static FloatToHalfI ( uint i ) : ushort
i	uint
return	ushort

HalfToFloat() public static method

Convert a float16 (NV_half_float) to a float32 Courtesy of OpenEXR

public static HalfToFloat ( ushort y ) : float
y	ushort
return	float

HalfToFloatI() public static method

Converts a half in ushort format to a float in uint format

public static HalfToFloatI ( ushort y ) : uint
y	ushort
return	uint

IntRead() public static method

Read a n*8 bits integer value to memory in native endian.

public static IntRead ( IntPtr src, int n ) : uint
src	System.IntPtr
n	int
return	uint

IntWrite() public static method

public static IntWrite ( IntPtr dest, int n, uint value ) : void
dest	System.IntPtr
n	int
value	uint
return	void

IsPow2() public static method

checks if a number is a power of 2

public static IsPow2 ( int number ) : bool
number	int
return	bool

MostSignificantBitSet() public static method

Returns the most significant bit set in a value.

public static MostSignificantBitSet ( uint value ) : uint
value	uint
return	uint