G3D::unorm8 Class Reference

Represents numbers on [0, 1] in 8 bits as an unsigned normalized 0.8 fixed-point value using the same encoding scheme as OpenGL. More...

Public Member Functions
	unorm8 ()
	unorm8 (const unorm8 &other)
	unorm8 (float f)
	Maps f to round(f * 255). More...
	unorm8 (double f)
uint8	bits () const
	Returns the underlying bits in this representation. More...
	operator double () const
	operator float () const
	Returns a number on [0.0f, 1.0f]. More...
bool	operator!= (const unorm8 other) const
unorm8	operator* (const int i) const
unorm8 &	operator*= (const int i)
unorm8	operator+ (const unorm8 other) const
unorm8 &	operator+= (const unorm8 other)
unorm8	operator- (const unorm8 other) const
unorm8 &	operator-= (const unorm8 other)
unorm8	operator/ (const int i) const
unorm8 &	operator/= (const int i)
bool	operator< (const unorm8 other) const
unorm8	operator<< (const int i) const
unorm8 &	operator<<= (const int i)
bool	operator<= (const unorm8 other) const
bool	operator== (const unorm8 other) const
bool	operator> (const unorm8 other) const
bool	operator>= (const unorm8 other) const
unorm8	operator>> (const int i) const
unorm8 &	operator>>= (const int i)
uint8	reinterpretAsUInt8 () const
	Returns the underlying bits in this representation. More...

Static Public Member Functions
static unorm8	fromBits (uint8 b)
	Equivalent to: More...
static unorm8	one ()
static unorm8	reinterpretFrom (uint8 b)
	Equivalent to: More...
static unorm8	zero ()

Detailed Description

Represents numbers on [0, 1] in 8 bits as an unsigned normalized 0.8 fixed-point value using the same encoding scheme as OpenGL.

OpenGL specifications can be found here: <www.opengl.org/registry/specs/ARB/shading_language_packing.txt>

Note that arithmetic operations may over and under-flow, just like uint8 arithmetic.

Constructor & Destructor Documentation

unorm8() [1/4]

G3D::unorm8::unorm8 ( )

inline

unorm8() [2/4]

G3D::unorm8::unorm8 ( const unorm8 &  other )

inline

unorm8() [3/4]

G3D::unorm8::unorm8 ( float  f )

inlineexplicit

Maps f to round(f * 255).

unorm8() [4/4]

G3D::unorm8::unorm8 ( double  f )

inlineexplicit

Member Function Documentation

bits()

uint8 G3D::unorm8::bits ( ) const

inline

Returns the underlying bits in this representation.

Equivalent to:

uint8 i = reinterpret_cast<const uint8&>(u); 

Referenced by G3D::Color4unorm8::asUInt32(), G3D::Color3unorm8::asUInt32(), and G3D::BinaryOutput::writeUNorm8().

fromBits()

static unorm8 G3D::unorm8::fromBits ( uint8  b )

inlinestatic

Equivalent to:

unorm8 u = reinterpret_cast<const unorm8&>(255);

Referenced by G3D::Color4unorm8::fromARGB(), G3D::Color3unorm8::fromARGB(), and G3D::BinaryInput::readUNorm8().

one()

static unorm8 G3D::unorm8::one ( )

inlinestatic

Referenced by G3D::Color4unorm8::one(), and G3D::Color3unorm8::one().

operator double()

G3D::unorm8::operator double ( ) const

inline

operator float()

G3D::unorm8::operator float ( ) const

inline

Returns a number on [0.0f, 1.0f].

operator!=()

bool G3D::unorm8::operator!= ( const unorm8  other ) const

inline

operator*()

unorm8 G3D::unorm8::operator* ( const int  i ) const

inline

operator*=()

unorm8& G3D::unorm8::operator*= ( const int  i )

inline

operator+()

unorm8 G3D::unorm8::operator+ ( const unorm8  other ) const

inline

operator+=()

unorm8& G3D::unorm8::operator+= ( const unorm8  other )

inline

operator-()

unorm8 G3D::unorm8::operator- ( const unorm8  other ) const

inline

operator-=()

unorm8& G3D::unorm8::operator-= ( const unorm8  other )

inline

operator/()

unorm8 G3D::unorm8::operator/ ( const int  i ) const

inline

operator/=()

unorm8& G3D::unorm8::operator/= ( const int  i )

inline

operator<()

bool G3D::unorm8::operator< ( const unorm8  other ) const

inline

operator<<()

unorm8 G3D::unorm8::operator<< ( const int  i ) const

inline

operator<<=()

unorm8& G3D::unorm8::operator<<= ( const int  i )

inline

operator<=()

bool G3D::unorm8::operator<= ( const unorm8  other ) const

inline

operator==()

bool G3D::unorm8::operator== ( const unorm8  other ) const

inline

operator>()

bool G3D::unorm8::operator> ( const unorm8  other ) const

inline

operator>=()

bool G3D::unorm8::operator>= ( const unorm8  other ) const

inline

operator>>()

unorm8 G3D::unorm8::operator>> ( const int  i ) const

inline

operator>>=()

unorm8& G3D::unorm8::operator>>= ( const int  i )

inline

reinterpretAsUInt8()

uint8 G3D::unorm8::reinterpretAsUInt8 ( ) const

inline

Returns the underlying bits in this representation.

Equivalent to:

uint8 i = reinterpret_cast<const uint8&>(u); 

reinterpretFrom()

static unorm8 G3D::unorm8::reinterpretFrom ( uint8  b )

inlinestatic

Equivalent to:

unorm8 u = reinterpret_cast<const unorm8&>(255);

zero()

static unorm8 G3D::unorm8::zero ( )

inlinestatic

Referenced by G3D::Color4unorm8::zero(), and G3D::Color3unorm8::zero().