PolygonVersionC Class Reference

Version C of the polygon filler. Similar to B, but uses edge tracking. More...

#include <PolygonVersionC.h>

Inheritance diagram for PolygonVersionC:


Public Member Functions
	PolygonVersionC ()
	Constructor.
bool	init (unsigned int aWidth, unsigned int aHeight)
	Initializer.
virtual	~PolygonVersionC ()
	Virtual destructor.
virtual void	renderEvenOdd (BitmapData aTarget, const Polygon aPolygon, unsigned long aColor, const MATRIX2D &aTransformation)
	Renders the polygon with even-odd fill.
virtual void	renderNonZeroWinding (BitmapData aTarget, const Polygon aPolygon, unsigned long aColor, const MATRIX2D &aTransformation)
	Renders the polygon with non-zero winding fill.
virtual void	setClipRect (unsigned int aX, unsigned int aY, unsigned int aWidth, unsigned int aHeight)
	Sets the clip rectangle for the polygon filler.
Protected Member Functions
bool	isSupported (BitmapData::BitmapFormat aFormat)
	Checks if a surface format is supported.
void	addEvenOddEdge (const PolygonEdge &aEdge)
	Adds an edge to be used with even-odd fill.
void	fillEvenOdd (BitmapData *aTarget, unsigned long aColor)
	Renders the mask to the canvas with even-odd fill.
void	addNonZeroEdge (const PolygonEdge &aEdge)
	Adds an edge to be used with non-zero winding fill.
void	fillNonZero (BitmapData *aTarget, unsigned long aColor, const ClipRectangle &aClipRect)
	Renders the mask to the canvas with non-zero winding fill.
void	resetExtents ()
	Resets the fill extents.
Protected Attributes
SUBPIXEL_DATA *	mMaskBuffer
NON_ZERO_MASK_DATA_UNIT *	mWindingBuffer
SpanExtents *	mEdgeExtents
SpanExtents	mVerticalExtents
unsigned int	mWidth
unsigned int	mBufferWidth
unsigned int	mHeight
ClipRectangle	mClipRect
MATRIX2D	mRemappingMatrix

Detailed Description

Version C of the polygon filler. Similar to B, but uses edge tracking.

Constructor & Destructor Documentation

PolygonVersionC::PolygonVersionC ( )

Constructor.

PolygonVersionC::~PolygonVersionC ( ) [virtual]

Virtual destructor.

Member Function Documentation

void PolygonVersionC::addEvenOddEdge ( const PolygonEdge & aEdge ) [protected]

Adds an edge to be used with even-odd fill.

void PolygonVersionC::addNonZeroEdge ( const PolygonEdge & aEdge ) [protected]

Adds an edge to be used with non-zero winding fill.

void PolygonVersionC::fillEvenOdd ( BitmapData * aTarget,

unsigned long aColor

) [protected]

Renders the mask to the canvas with even-odd fill.

void PolygonVersionC::fillNonZero ( BitmapData * aTarget,

unsigned long aColor,

const ClipRectangle & aClipRect

) [protected]

Renders the mask to the canvas with non-zero winding fill.

bool PolygonVersionC::init ( unsigned int aWidth,

unsigned int aHeight

)

Initializer.
aWidth and aHeight define the maximum output size for the filler. The filler will output to larger bitmaps as well, but the output will be cropped.

bool PolygonVersionC::isSupported ( BitmapData::BitmapFormat aFormat ) [protected]

Checks if a surface format is supported.

void PolygonVersionC::renderEvenOdd ( BitmapData * aTarget,

const Polygon * aPolygon,

unsigned long aColor,

const MATRIX2D & aTransformation

) [virtual]

Renders the polygon with even-odd fill.

Parameters:

aTarget the target bitmap.

aPolygon the polygon to render.

aColor the color to be used for rendering.

aTransformation the transformation matrix.

Implements PolygonFiller.

void PolygonVersionC::renderNonZeroWinding ( BitmapData * aTarget,

const Polygon * aPolygon,

unsigned long aColor,

const MATRIX2D & aTransformation

) [virtual]

Renders the polygon with non-zero winding fill.

Parameters:

aTarget the target bitmap.

aPolygon the polygon to render.

aColor the color to be used for rendering.

aTransformation the transformation matrix.

Implements PolygonFiller.

void PolygonVersionC::resetExtents ( ) [protected]

Resets the fill extents.

void PolygonVersionC::setClipRect ( unsigned int aX,

unsigned int aY,

unsigned int aWidth,

unsigned int aHeight

) [virtual]

Sets the clip rectangle for the polygon filler.

Implements PolygonFiller.