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XFcPrimitiveDrawEdge Class Reference

Class for defining and handling shape edges in XFcPrimitiveDraw. More...

Inheritance diagram for XFcPrimitiveDrawEdge:

[legend]Collaboration diagram for XFcPrimitiveDrawEdge:

[legend]List of all members.

Public Member Functions
virtual void	advanceScanline ()=0
	Advances the current scanline with one step.
void	updateSpan (INT32 aXp)
	Updates the span information of an edge.
XFcPrimitiveDrawEdge *	nextEdge ()
	Returns the next edge after this.
XFcPrimitiveDrawEdge *	prevEdge ()
	Returns the previous edge before this.
void	removeEdge (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Removes this edge from the list.
void	insertAfterEdge (XFcPrimitiveDrawEdge **mListEnd, XFcPrimitiveDrawEdge *newNode)
	Inserts a new edge after this.
void	insertBeforeEdge (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge *newNode)
	Inserts a new edge before this.
void	addHeadEdge (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Adds this edge to the beginning of the list.
void	addTailEdge (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Adds this edge to the end of the list.
XFcPrimitiveDrawEdge *	nextSpan ()
	Returns the next Span after this.
XFcPrimitiveDrawEdge *	prevSpan ()
	Returns the previous Span before this.
void	removeSpan (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Removes this Span from the list.
void	insertAfterSpan (XFcPrimitiveDrawEdge **mListEnd, XFcPrimitiveDrawEdge *newNode)
	Inserts a new Span after this.
void	insertBeforeSpan (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge *newNode)
	Inserts a new Span before this.
void	addHeadSpan (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Adds this Span to the beginning of the list.
void	addTailSpan (XFcPrimitiveDrawEdge **mListBegin, XFcPrimitiveDrawEdge **mListEnd)
	Adds this Span to the end of the list.
Public Attributes
REAL	mXp
	Current X position.
INT32	mXpi
	Current X position as integer.
INT32	mYStart
	Starting Y of the line.
INT32	mYEnd
	Ending Y of the line.
XFcPrimitiveDrawEdge *	mNextEdge
	Pointer to the next edge.
XFcPrimitiveDrawEdge *	mPrevEdge
	Pointer to the previous edge.
INT32	mSpanStart
	Beginning of the span drawn with current edge.
INT32	mSpanEnd
	End of the span drawn with the current edge.
XFcPrimitiveDrawEdge *	mNextSpan
	Pointer to the next span.
XFcPrimitiveDrawEdge *	mPrevSpan
	Pointer to the previous span.
UINT8	mSpanAlpha
	Alpha for the area between this and next span.
INT32	mEdgeType
	Used in non-xor drawing for detecting edge states.

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Detailed Description

Class for defining and handling shape edges in XFcPrimitiveDraw.

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Member Function Documentation

void XFcPrimitiveDrawEdge::addHeadEdge (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Adds this edge to the beginning of the list.

void XFcPrimitiveDrawEdge::addHeadSpan (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Adds this Span to the beginning of the list.

void XFcPrimitiveDrawEdge::addTailEdge (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Adds this edge to the end of the list.

void XFcPrimitiveDrawEdge::addTailSpan (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Adds this Span to the end of the list.

virtual void XFcPrimitiveDrawEdge::advanceScanline (    )  [pure virtual]

Advances the current scanline with one step. Implemented in XFcPrimitiveDrawLineEdge, and XFcPrimitiveDrawIndexedEdge.

void XFcPrimitiveDrawEdge::insertAfterEdge (  XFcPrimitiveDrawEdge **    mListEnd, XFcPrimitiveDrawEdge *    newNode )  [inline]

Inserts a new edge after this.

void XFcPrimitiveDrawEdge::insertAfterSpan (  XFcPrimitiveDrawEdge **    mListEnd, XFcPrimitiveDrawEdge *    newNode )  [inline]

Inserts a new Span after this.

void XFcPrimitiveDrawEdge::insertBeforeEdge (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge *    newNode )  [inline]

Inserts a new edge before this.

void XFcPrimitiveDrawEdge::insertBeforeSpan (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge *    newNode )  [inline]

Inserts a new Span before this.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::nextEdge (    )  [inline]

Returns the next edge after this.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::nextSpan (    )  [inline]

Returns the next Span after this.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::prevEdge (    )  [inline]

Returns the previous edge before this.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::prevSpan (    )  [inline]

Returns the previous Span before this.

void XFcPrimitiveDrawEdge::removeEdge (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Removes this edge from the list.

void XFcPrimitiveDrawEdge::removeSpan (  XFcPrimitiveDrawEdge **    mListBegin, XFcPrimitiveDrawEdge **    mListEnd )  [inline]

Removes this Span from the list.

void XFcPrimitiveDrawEdge::updateSpan (  INT32    aXp )  [inline]

Updates the span information of an edge.

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Member Data Documentation

INT32 XFcPrimitiveDrawEdge::mEdgeType

Used in non-xor drawing for detecting edge states.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::mNextEdge

Pointer to the next edge.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::mNextSpan

Pointer to the next span.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::mPrevEdge

Pointer to the previous edge.

XFcPrimitiveDrawEdge* XFcPrimitiveDrawEdge::mPrevSpan

Pointer to the previous span.

UINT8 XFcPrimitiveDrawEdge::mSpanAlpha

Alpha for the area between this and next span.

INT32 XFcPrimitiveDrawEdge::mSpanEnd

End of the span drawn with the current edge.

INT32 XFcPrimitiveDrawEdge::mSpanStart

Beginning of the span drawn with current edge.

REAL XFcPrimitiveDrawEdge::mXp

Current X position.

INT32 XFcPrimitiveDrawEdge::mXpi

Current X position as integer.

INT32 XFcPrimitiveDrawEdge::mYEnd

Ending Y of the line.

INT32 XFcPrimitiveDrawEdge::mYStart

Starting Y of the line.

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