PolygonVersionF Class Reference

Version F of the polygon filler. Similar to E, but does the rendering one scanline at a time. More...

#include <PolygonVersionF.h>

Inheritance diagram for PolygonVersionF:


Public Member Functions
	PolygonVersionF ()
	Constructor.
bool	init (unsigned int aWidth, unsigned int aHeight, unsigned int aEdgeCount)
	Initializer.
virtual	~PolygonVersionF ()
	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.
bool	addEdge (const PolygonEdge &aEdge)
	Adds an edge.
void	renderEvenOddEdges (PolygonScanEdge *&aActiveEdgeTable, SpanExtents &aEdgeExtents, int aCurrentLine)
	Renders the edges from the current vertical index using even-odd fill.
void	fillEvenOdd (BitmapData *aTarget, unsigned long aColor)
	Renders the mask to the canvas with even-odd fill.
void	renderNonZeroEdges (PolygonScanEdge *&aActiveEdgeTable, SpanExtents &aEdgeExtents, int aCurrentLine)
	Renders the edges from the current vertical index using 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.
bool	resizeEdgeStorage (int aIncrement)
	Resizes the edge storage.
int	getFreeEdgeCount ()
	Returns the amount of free edges in the edge storage.
Protected Attributes
SUBPIXEL_DATA *	mMaskBuffer
NonZeroMask *	mWindingBuffer
SpanExtents	mVerticalExtents
PolygonScanEdge **	mEdgeTable
PolygonScanEdge *	mEdgeStorage
unsigned int	mEdgeCount
unsigned int	mCurrentEdge
unsigned int	mWidth
unsigned int	mBufferWidth
unsigned int	mHeight
ClipRectangle	mClipRect
MATRIX2D	mRemappingMatrix

Detailed Description

Version F of the polygon filler. Similar to E, but does the rendering one scanline at a time.

Constructor & Destructor Documentation

PolygonVersionF::PolygonVersionF ( )

Constructor.

PolygonVersionF::~PolygonVersionF ( ) [virtual]

Virtual destructor.

Member Function Documentation

bool PolygonVersionF::addEdge ( const PolygonEdge & aEdge ) [protected]

Adds an edge.

void PolygonVersionF::fillEvenOdd ( BitmapData * aTarget,

unsigned long aColor

) [protected]

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

void PolygonVersionF::fillNonZero ( BitmapData * aTarget,

unsigned long aColor,

const ClipRectangle & aClipRect

) [protected]

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

int PolygonVersionF::getFreeEdgeCount ( ) [inline, protected]

Returns the amount of free edges in the edge storage.

bool PolygonVersionF::init ( unsigned int aWidth,

unsigned int aHeight,

unsigned int aEdgeCount

)

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. aEdgeCount defines the initial amount of edges available for rendering.

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

Checks if a surface format is supported.

void PolygonVersionF::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 PolygonVersionF::renderEvenOddEdges ( PolygonScanEdge *& aActiveEdgeTable,

SpanExtents & aEdgeExtents,

int aCurrentLine

) [inline, protected]

Renders the edges from the current vertical index using even-odd fill.

void PolygonVersionF::renderNonZeroEdges ( PolygonScanEdge *& aActiveEdgeTable,

SpanExtents & aEdgeExtents,

int aCurrentLine

) [inline, protected]

Renders the edges from the current vertical index using non-zero winding fill.

void PolygonVersionF::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 PolygonVersionF::resetExtents ( ) [protected]

Resets the fill extents.

bool PolygonVersionF::resizeEdgeStorage ( int aIncrement ) [protected]

Resizes the edge storage.

void PolygonVersionF::setClipRect ( unsigned int aX,

unsigned int aY,

unsigned int aWidth,

unsigned int aHeight

) [virtual]

Sets the clip rectangle for the polygon filler.

Implements PolygonFiller.