Hue rotate filter. More...

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

Inheritance diagram for IlvHueRotateFilter:

Public Member Functions
	IlvHueRotateFilter (IlFloat angle=0.0)
	Constructor. More...

IlFloat	getAngle () const
	Returns the hue rotation angle. More...

void	setAngle (IlFloat angle)
	Sets the rotation angle for the hue. More...

Public Member Functions inherited from IlvColorMatrixFilter
	IlvColorMatrixFilter (const IlFloat *values=0)
	Constructor. More...

	~IlvColorMatrixFilter ()
	Destructor. More...

IlvBitmapData *	apply (IlUInt count=0, const IlvBitmapData **inputs=0)
	Applies the color matrix to the given image.

const IlFloat *	getValues (IlUInt &count) const
	Returns the matrix coefficients. More...

void	setValues (const IlFloat *values)
	Sets the matrix coefficients. More...

void	setValues (IlFloat a00, IlFloat a01, IlFloat a02, IlFloat a03, IlFloat a04, IlFloat a10, IlFloat a11, IlFloat a12, IlFloat a13, IlFloat a14, IlFloat a20, IlFloat a21, IlFloat a22, IlFloat a23, IlFloat a24, IlFloat a30, IlFloat a31, IlFloat a32, IlFloat a33, IlFloat a34)
	Sets the matrix coefficients. More...

Public Member Functions inherited from IlvBitmapFilter
	IlvBitmapFilter ()
	Constructor. More...

virtual	~IlvBitmapFilter ()
	Destructor. More...

IlvBitmapData *	applyUnary (const IlvBitmapData *data)
	Convenience method for unary filters. More...

virtual const char *	getClassName () const
	Returns the class name of the filter. More...

IlUInt	getHeight () const
	Returns the height of the filter effect region. More...

const char const	getInputs (IlUInt &count) const
	Returns the name of the input bitmap data. More...

const char *	getName () const
	Returns the name of the filter. More...

IlUInt	getRefCount () const
	Returns the reference count for this instance.

const char *	getResult () const
	Returns the name of the result bitmap data. More...

IlUInt	getWidth () const
	Returns the width of the filter effect region. More...

IlInt	getX () const
	Returns the left coordinate of the filter effect region. More...

IlInt	getY () const
	Returns the top coordinate of the filter effect region. More...

void	lock ()
	Locks the current instance.

void	setHeight (IlUInt height)
	Sets the height of the filter effect region. More...

void	setInputs (IlUInt count, const char const name)
	Sets the input names of the filter. More...

void	setName (const char *id)
	Sets the name of the filter. More...

void	setResult (const char *name)
	Sets the result name of the filter. More...

void	setWidth (IlUInt width)
	Sets the width of the filter effect region. More...

void	setX (IlInt x)
	Sets the left coordinate of the filter effect region. More...

void	setY (IlInt y)
	Sets the top coordinate of the filter effect region. More...

void	unLock ()
	Unlocks the current instance. When the reference count is `0`, the instance is deleted.

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 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 IlvBitmapFilter
static IlvBitmapFilter *	Create (const char *classname, IlBoolean forceLoad=IlTrue)
	This static method creates an instance of a bitmap filter of given classname. If the filter class is not registered and forceLoad is `IlTrue`, an attempt to load a dynamic module for this filter is made. More...

static const char **	GetRegisteredFilters (IlUInt &num)
	This static method returns an array of registered filter class names. More...

Detailed Description

Hue rotate filter.

Library: ilvbmpflt

This bitmap filter lets you rotate the hue value of the color components of an image. The hue rotate operation is equivalent to the following matrix operation:

R' = a00  a01  a02   0   0    R
G' = a10  a11  a12   0   0    G
B' = a20  a21  a22   0   0    B
A' =   0    0    0   1   0    A
1  =   0    0    0   0   1    1

where the terms a00, a01, etc., are calculated as follows:

| a00 a01 a02 |    [+0.213 +0.715 +0.072]
| a10 a11 a12 | =  [+0.213 +0.715 +0.072] +
| a20 a21 a22 |    [+0.213 +0.715 +0.072]

                        [+0.787 -0.715 -0.072]
          cos(angle) *  [-0.212 +0.285 -0.072] +
                        [-0.213 -0.715 +0.928]

                        [-0.213 -0.715+0.928]
          sin(angle) *  [+0.143 +0.140-0.283]
                        [-0.787 +0.715+0.072]

Thus, the upper left term of the hue matrix turns out to be: .213 + cos(hueRotate value)*.787 - sin(hueRotate value)*.213

The angle is given in degrees.

See also: IlvRGBBitmapData, IlvBitmapFilter, IlvColorMatrixFilter, IlvLuminanceToAlphaFilter, IlvSaturationFilter

Constructor & Destructor Documentation

IlvHueRotateFilter::IlvHueRotateFilter ( IlFloat angle = 0.0 )

Constructor.

Initializes a new instance of an IlvHueRotateFilter. The default angle is 0.

Parameters

angle The angle to rotate the hue.

Member Function Documentation

IlFloat IlvHueRotateFilter::getAngle ( ) const

Returns the hue rotation angle.

Returns: The hue rotation angle.

void IlvHueRotateFilter::setAngle ( IlFloat angle )

Sets the rotation angle for the hue.

Parameters

angle The angle to use.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation