GClasses::GRegionAreaIterator Class Reference

Iterates over all the pixels in an image that have the same color and are transitively adjacent. In other words, if you were to flood-fill a the specified point, this returns all the pixels that would be changed. More...

#include <GRegion.h>

Public Member Functions
	GRegionAreaIterator (GImage *pImage, int nSampleX, int nSampleY)
	The point (nSampleX, nSampleY) should be somewhere in the region The image pImage should be a region mask, such that all points in the same region have exactly the same pixel value. More...
	~GRegionAreaIterator ()
bool	next (int *pX, int *pY)
	If it returns false, the current values are invalid and it's done. If it returns true, pX and pY will hold the coordinates of a pixel in the region. More...

Protected Attributes
int	m_bottom
int	m_left
unsigned int	m_nRegion
GImage *	m_pImage
int	m_right
int	m_top
int	m_x
int	m_y

Detailed Description

Iterates over all the pixels in an image that have the same color and are transitively adjacent. In other words, if you were to flood-fill a the specified point, this returns all the pixels that would be changed.

Constructor & Destructor Documentation

GClasses::GRegionAreaIterator::GRegionAreaIterator	(	GImage *	pImage,
		int	nSampleX,
		int	nSampleY
	)

The point (nSampleX, nSampleY) should be somewhere in the region The image pImage should be a region mask, such that all points in the same region have exactly the same pixel value.

GClasses::GRegionAreaIterator::~GRegionAreaIterator

(

)

Member Function Documentation

bool GClasses::GRegionAreaIterator::next	(	int *	pX,
		int *	pY
	)

If it returns false, the current values are invalid and it's done. If it returns true, pX and pY will hold the coordinates of a pixel in the region.

Member Data Documentation

int GClasses::GRegionAreaIterator::m_bottom

protected

int GClasses::GRegionAreaIterator::m_left

protected

unsigned int GClasses::GRegionAreaIterator::m_nRegion

protected

GImage* GClasses::GRegionAreaIterator::m_pImage

protected

int GClasses::GRegionAreaIterator::m_right

protected

int GClasses::GRegionAreaIterator::m_top

protected

int GClasses::GRegionAreaIterator::m_x

protected

int GClasses::GRegionAreaIterator::m_y

protected