G3D::snorm16 Class Reference

Represents numbers on [-1, 1] in 16 bits as an unsigned normalized 0.8 fixed-point value using the same encoding scheme as OpenGL. More...

Public Member Functions
	snorm16 ()
	snorm16 (const snorm16 &other)
	snorm16 (float f)
	Maps f to round(f * 32767). More...
int16	bits () const
	Returns the underlying bits in this representation. More...
	operator float () const
	Returns a number on [-1.0f, 1.0f]. More...
bool	operator!= (const snorm16 other) const
snorm16	operator* (const int i) const
snorm16 &	operator*= (const int i)
snorm16	operator+ (const snorm16 other) const
snorm16 &	operator+= (const snorm16 other)
snorm16	operator- (const snorm16 other) const
snorm16 &	operator-= (const snorm16 other)
snorm16	operator/ (const int i) const
snorm16 &	operator/= (const int i)
bool	operator< (const snorm16 other) const
snorm16	operator<< (const int i) const
snorm16 &	operator<<= (const int i)
bool	operator<= (const snorm16 other) const
bool	operator== (const snorm16 other) const
bool	operator> (const snorm16 other) const
bool	operator>= (const snorm16 other) const
snorm16	operator>> (const int i) const
snorm16 &	operator>>= (const int i)
int16	reinterpretAsInt16 () const
	Returns the underlying bits in this representation. More...

Static Public Member Functions
static snorm16	fromBits (int16 b)
	Equivalent to: More...
static snorm16	one ()
static snorm16	reinterpretFrom (int16 b)
	Equivalent to: More...
static snorm16	zero ()

Detailed Description

Represents numbers on [-1, 1] in 16 bits as an unsigned normalized 0.8 fixed-point value using the same encoding scheme as OpenGL.

Note that arithmetic operations may over and under-flow, just like int16 arithmetic.

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

Constructor & Destructor Documentation

snorm16() [1/3]

G3D::snorm16::snorm16 ( )

inline

snorm16() [2/3]

G3D::snorm16::snorm16 ( const snorm16 &  other )

inline

snorm16() [3/3]

G3D::snorm16::snorm16 ( float  f )

inlineexplicit

Maps f to round(f * 32767).

Member Function Documentation

bits()

int16 G3D::snorm16::bits ( ) const

inline

Returns the underlying bits in this representation.

Equivalent to:

int16 i = reinterpret_cast<const int16&>(u); 

fromBits()

static snorm16 G3D::snorm16::fromBits ( int16  b )

inlinestatic

Equivalent to:

snorm16 u = reinterpret_cast<const snorm16&>(b);

one()

static snorm16 G3D::snorm16::one ( )

inlinestatic

operator float()

G3D::snorm16::operator float ( ) const

inline

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

operator!=()

bool G3D::snorm16::operator!= ( const snorm16  other ) const

inline

operator*()

snorm16 G3D::snorm16::operator* ( const int  i ) const

inline

operator*=()

snorm16& G3D::snorm16::operator*= ( const int  i )

inline

operator+()

snorm16 G3D::snorm16::operator+ ( const snorm16  other ) const

inline

operator+=()

snorm16& G3D::snorm16::operator+= ( const snorm16  other )

inline

operator-()

snorm16 G3D::snorm16::operator- ( const snorm16  other ) const

inline

operator-=()

snorm16& G3D::snorm16::operator-= ( const snorm16  other )

inline

operator/()

snorm16 G3D::snorm16::operator/ ( const int  i ) const

inline

operator/=()

snorm16& G3D::snorm16::operator/= ( const int  i )

inline

operator<()

bool G3D::snorm16::operator< ( const snorm16  other ) const

inline

operator<<()

snorm16 G3D::snorm16::operator<< ( const int  i ) const

inline

operator<<=()

snorm16& G3D::snorm16::operator<<= ( const int  i )

inline

operator<=()

bool G3D::snorm16::operator<= ( const snorm16  other ) const

inline

operator==()

bool G3D::snorm16::operator== ( const snorm16  other ) const

inline

operator>()

bool G3D::snorm16::operator> ( const snorm16  other ) const

inline

operator>=()

bool G3D::snorm16::operator>= ( const snorm16  other ) const

inline

operator>>()

snorm16 G3D::snorm16::operator>> ( const int  i ) const

inline

operator>>=()

snorm16& G3D::snorm16::operator>>= ( const int  i )

inline

reinterpretAsInt16()

int16 G3D::snorm16::reinterpretAsInt16 ( ) const

inline

Returns the underlying bits in this representation.

Equivalent to:

int16 i = reinterpret_cast<const int16&>(u); 

reinterpretFrom()

static snorm16 G3D::snorm16::reinterpretFrom ( int16  b )

inlinestatic

Equivalent to:

snorm16 u = reinterpret_cast<const snorm16&>(b);

zero()

static snorm16 G3D::snorm16::zero ( )

inlinestatic