Rogue Wave Views
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Hue rotate filter. More...
#include <ilviews/bitmaps/filters/colmatrix.h>
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. | |
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... | |
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.
| IlvHueRotateFilter::IlvHueRotateFilter | ( | IlFloat | angle = 0.0 | ) |
Constructor.
Initializes a new instance of an IlvHueRotateFilter. The default angle is 0.
| angle | The angle to rotate the hue. |
| IlFloat IlvHueRotateFilter::getAngle | ( | ) | const |
Returns the hue rotation angle.
| void IlvHueRotateFilter::setAngle | ( | IlFloat | angle | ) |
Sets the rotation angle for the hue.
| angle | The angle to use. |
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