Class TGopFilledPolygonWithPattern

class TGopFilledPolygonWithPattern : public TGraphicsOperation;

Description

An accelerated graphics operation that fills a polygon with a pattern held in another bitmap.

TGopFilledPolygonWithPattern::AddPoints(TInt,TPoint *) must be called to specify the polygon to be filled. Objects of this class can be passed to a graphics accelerator's Operation() function either individually, or in a buffer.

Derivation

• TGraphicsOperation - Abstract base class for all graphics operations.

• TGopFilledPolygonWithPattern - An accelerated graphics operation that fills a polygon with a pattern held in an...

Members

Defined in TGopFilledPolygonWithPattern:

• AddPoints(TInt,TPoint *)Specifies the polygon to be filled as a number of 2D point coordinates.
• iFillRuleBit flags for how self-crossing polygons are filled.
• iNumPointsThe number of points in the polygon.
• iPatternThe pattern of bitmaps that is used to fill the polygon.

Inherited from TGraphicsOperation:

• Append(TInt,TAny *)
• EAlphaBlendOneBitmap
• EAlphaBlendTwoBitmaps
• EBitBlt
• EBitBltAlphaBitmap
• EBitBltAlphaChannel
• EBitBltMasked
• EBitBltTransparent
• EChunkTest
• EFadeRect
• EFilledPolygon
• EFilledPolygonWithPattern
• EFilledRect
• EFilledRectUsingDrawMode
• EFilledRectWithPattern
• EInvertRect
• EScaledBitBlt
• EScaledBitBltAlphaBitmap
• EScaledBitBltAlphaChannel
• EScaledBitBltMasked
• EScaledBitBltTransparent
• EVirtualAddressTest
• Function()const
• Next()const
• Size()const
• TGopFunction
• TGraphicsOperation(TGopFunction,TInt)
• iFunction
• iSize

See also:

• TGraphicsAcceleratorCaps::iPolygonSpecifies the supported fill rules for self crossing polygons. Uses a bit flag f...
• TGopFillPatternA pattern represented by a bitmap that is used by a graphics accelerator to fill...

inline TGopFilledPolygonWithPattern(TGopFillPattern aPattern, CGraphicsContext::TFillRule aFillRule);

Description

Constructor with a fill pattern and a fill rule. The number of points is initialised to zero.

Parameters

TGopFillPattern aPattern The fill pattern. CGraphicsContext::TFillRule aFillRule Bit flags for how self-crossing polygons are filled.

inline void AddPoints(TInt aNumPoints, TPoint *aPoints);

Description

Specifies the polygon to be filled as a number of 2D point coordinates.

TGopFilledPolygonWithPattern::AddPoints(TInt,TPoint *) should only be called once the TGopFilledPolygonWithPattern object has been stored into a buffer. There must be enough room in the buffer after the TGopFilledPolygonWithPattern object to hold aNumPoints TPoint sized structures. This is because the points are copied into the memory space directly following the TGopFilledPolygonWithPattern object.

Parameters

TInt aNumPoints The number of points in the polygon. TPoint *aPoints Pointer to the first point in the polygon.

TGopFillPattern iPattern;

Description

The pattern of bitmaps that is used to fill the polygon.

CGraphicsContext::TFillRule iFillRule;

Description

Bit flags for how self-crossing polygons are filled.

See also:

• CGraphicsContext::TFillRuleRules used to fill self crossing polygons.

TInt iNumPoints;

Description

The number of points in the polygon.