BGRABitmap

Unit BGRAFillInfo

Description
Uses
Classes, Interfaces, Objects and Records
Functions and Procedures
Types
Constants
Variables

Description

Generic class to hold a shape to be filled as well as the implementation for basic shapes

Uses

Overview

Classes, Interfaces, Objects and Records

Name Description
Class TCustomFillPolyInfo Abstract class to provide fill information for a polygon
Record TCustomPointRecord Base record to describe a point in a polygon to be filled
Class TFillBorderEllipseInfo Fill information for the border of an ellipse
Class TFillBorderRoundRectInfo Fill information for the border of a round rectangle
Class TFillEllipseInfo Fill information for an ellipse
Class TFillPolyInfo Fill information for a polygon
Class TFillRectangleInfo Fill information for rectangle
Class TFillRoundRectangleInfo Fill information for a round rectangle
Class TFillShapeInfo Abstract class to provide fill information for any shape
Class TOnePassFillPolyInfo Fill information for a polygon assuming that queries are always in increasying Y.
Record TOnePassRecord Linked list of coordinates for one-pass drawing
Record TPolySlice Horizontal strip of a polygon being filled
Class TSimpleFillPolyInfo Fill information for a simple polygons

Functions and Procedures

procedure AddDensity(dest: PDensity; start,count: integer; value : word); inline;
function BGRAShapeComputeMinMax(AShape: TBGRACustomFillInfo; out minx, miny, maxx, maxy: integer; bmpDest: TBGRACustomBitmap): boolean; overload;
function BGRAShapeComputeMinMax(AShape: TBGRACustomFillInfo; out minx, miny, maxx, maxy: integer; clip: TRect): boolean; overload;
procedure ComputeAliasedRowBounds(x1,x2: single; minx,maxx: integer; out ix1,ix2: integer);
function DivByAntialiasPrecision(value: UInt32or64): UInt32or64; inline;
function DivByAntialiasPrecision256(value: UInt32or64): UInt32or64; inline;
function DivByAntialiasPrecision65536(value: UInt32or64): UInt32or64; inline;
function IsPointInEllipse(x,y,rx,ry: single; point: TPointF): boolean;
function IsPointInPolygon(const points: ArrayOfTPointF; point: TPointF; windingMode: boolean): boolean;
function IsPointInRectangle(x1, y1, x2, y2: single; point: TPointF): boolean;
function IsPointInRoundRectangle(x1, y1, x2, y2, rx, ry: single; point: TPointF): boolean;

Types

PCustomPointRecord = ˆTCustomPointRecord;
PDensity = ˆTDensity;
POnePassRecord = ˆTOnePassRecord;
TDensity = word;

Constants

AntialiasPrecision = 16;
AntialiasPrecisionShift = 4;

Description

Functions and Procedures

procedure AddDensity(dest: PDensity; start,count: integer; value : word); inline;

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function BGRAShapeComputeMinMax(AShape: TBGRACustomFillInfo; out minx, miny, maxx, maxy: integer; bmpDest: TBGRACustomBitmap): boolean; overload;

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function BGRAShapeComputeMinMax(AShape: TBGRACustomFillInfo; out minx, miny, maxx, maxy: integer; clip: TRect): boolean; overload;

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procedure ComputeAliasedRowBounds(x1,x2: single; minx,maxx: integer; out ix1,ix2: integer);

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function DivByAntialiasPrecision(value: UInt32or64): UInt32or64; inline;

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function DivByAntialiasPrecision256(value: UInt32or64): UInt32or64; inline;

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function DivByAntialiasPrecision65536(value: UInt32or64): UInt32or64; inline;

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function IsPointInEllipse(x,y,rx,ry: single; point: TPointF): boolean;

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function IsPointInPolygon(const points: ArrayOfTPointF; point: TPointF; windingMode: boolean): boolean;

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function IsPointInRectangle(x1, y1, x2, y2: single; point: TPointF): boolean;

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function IsPointInRoundRectangle(x1, y1, x2, y2, rx, ry: single; point: TPointF): boolean;

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Types

PCustomPointRecord = ˆTCustomPointRecord;

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PDensity = ˆTDensity;

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POnePassRecord = ˆTOnePassRecord;

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TDensity = word;

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Constants

AntialiasPrecision = 16;

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AntialiasPrecisionShift = 4;

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