Public Member Functions
	LensDistortionPixelAccess (DImg *srcImage)

void	pixelAccessGetCubic (double srcX, double srcY, double brighten, uchar *dst)

	~LensDistortionPixelAccess ()

Protected Member Functions
void	cubicInterpolate (uchar src, int rowStride, uchar dst, bool sixteenBit, double dx, double dy, double brighten)

uchar *	pixelAccessAddress (int i, int j)

void	pixelAccessDoEdge (int i, int j)

void	pixelAccessReposition (int xInt, int yInt)

void	pixelAccessSelectRegion (int n)

Detailed Description

LensDistortionPixelAccess class: solving the eternal problem: random, cubic-interpolated, sub-pixel coordinate access to an image. Assuming that accesses are at least slightly coherent, LensDistortionPixelAccess keeps LensDistortionPixelAccessRegions buffers, each containing a LensDistortionPixelAccessWidth x LensDistortionPixelAccessHeight region of pixels. Buffer[0] is always checked first, so move the last accessed region into that position. When a request arrives which is outside all the regions, get a new region. The new region is placed so that the requested pixel is positioned at [LensDistortionPixelAccessXOffset, LensDistortionPixelAccessYOffset] in the region.

Constructor & Destructor Documentation

◆ LensDistortionPixelAccess()

Digikam::LensDistortionPixelAccess::LensDistortionPixelAccess ( DImg * srcImage )

explicit

References Digikam::DImg::copy(), and LensDistortionPixelAccessRegions.

◆ ~LensDistortionPixelAccess()

Digikam::LensDistortionPixelAccess::~LensDistortionPixelAccess ( )

References LensDistortionPixelAccessRegions.

Member Function Documentation

◆ cubicInterpolate()

void Digikam::LensDistortionPixelAccess::cubicInterpolate	(	uchar *	src,
		int	rowStride,
		uchar *	dst,
		bool	sixteenBit,
		double	dx,
		double	dy,
		double	brighten
	)