IlvGammaTransfer Class Reference

Gamma transfer function. More...

#include <ilviews/bitmaps/filters/transfer.h>

Inheritance diagram for IlvGammaTransfer:

Public Member Functions
	IlvGammaTransfer (IlFloat amplitude=1.0, IlFloat exponent=1.0, IlFloat offset=0.0)
	Constructor. More...
IlFloat	getAmplitude () const
	Returns the amplitude. More...
IlFloat	getExponent () const
	Returns the exponent. More...
IlFloat	getOffset () const
	Returns the offset. More...
void	setAmplitude (IlFloat amplitude)
	Sets the amplitude. More...
void	setExponent (IlFloat exponent)
	Sets the exponent. More...
void	setOffset (IlFloat offset)
	Sets the offset. More...
void	setValues (IlFloat amplitude, IlFloat exponent, IlFloat offset)
	Sets the values for amplitude, exponent, and offset. More...
Public Member Functions inherited from IlvTransferFunction
	IlvTransferFunction ()
	Constructor. More...
const IlUChar *	getLookUpTable () const
	Returns the lookup table. More...
void	setLookUpValue (IlUInt index, IlUChar value)
	Sets an entry in the lookup table. More...
Public Member Functions inherited from IlvValueInterface
virtual IlBoolean	applyValue (const IlvValue &value)
	Apply an accessor. More...
virtual IlBoolean	changeValue (const IlvValue &val)
	Changes the value of an accessor. More...
virtual IlBoolean	changeValues (const IlvValue *values, IlUShort count=0)
	Changes several accessor values simultaneously. More...
virtual void	getAccessors (const IlSymbol *const **names, const IlvValueTypeClass *const **types, IlUInt &count) const
	Retrieves the list of available accessors of an object. More...
virtual const char *	getName () const
	Returns the name of the instance. The semantic and implementation of this method are defined by concrete subclasses. The default implementation returns 0. More...
virtual IlvValue &	queryValue (IlvValue &val) const
	Retrieves an accessor value. More...
virtual void	queryValues (IlvValue *values, IlUShort count) const
	Retrieves multiple accessor values simultaneously. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvTransferFunction
static IlvTransferFunction *	Create (const char *name)
	Returns a new instance of a registered transfer function. More...

Detailed Description

Gamma transfer function.

Library: ilvbmpflt

This transfer function defines a lookup table by an exponential function: C' = amplitude * pow(C, exponent) + offset

See also

IlvRGBBitmapData, IlvBitmapFilter, IlvComponentTransferFilter, IlvTransferFunction, IlvIdentityTransfer, IlvLinearTransfer, IlvTableTransfer, IlvDiscreteTransfer

Constructor & Destructor Documentation

IlvGammaTransfer()

IlvGammaTransfer::IlvGammaTransfer	(	IlFloat	amplitude = 1.0,
		IlFloat	exponent = 1.0,
		IlFloat	offset = 0.0
	)

Constructor.

Initializes a new instance of the class IlvGammaTransfer.

Parameters

amplitude	The amplitude value.
exponent	The exponent value.
offset	The offset value.

Member Function Documentation

getAmplitude()

IlFloat IlvGammaTransfer::getAmplitude

(

)

const

Returns the amplitude.

Returns

The amplitude.

getExponent()

IlFloat IlvGammaTransfer::getExponent

(

)

const

Returns the exponent.

Returns

The exponent.

getOffset()

IlFloat IlvGammaTransfer::getOffset

(

)

const

Returns the offset.

Returns

The offset.

setAmplitude()

void IlvGammaTransfer::setAmplitude

(

IlFloat

amplitude

)

Sets the amplitude.

Parameters

amplitude

The new amplitude.

setExponent()

void IlvGammaTransfer::setExponent

(

IlFloat

exponent

)

Sets the exponent.

Parameters

exponent

The new exponent.

setOffset()

void IlvGammaTransfer::setOffset

(

IlFloat

offset

)

Sets the offset.

Parameters

offset

The new offset.

setValues()

void IlvGammaTransfer::setValues	(	IlFloat	amplitude,
		IlFloat	exponent,
		IlFloat	offset
	)

Sets the values for amplitude, exponent, and offset.

Parameters

amplitude	The new amplitude.
exponent	The new exponent.
offset	The new offset.