Interface IBGRAPath

Fields

Properties

Unit

BGRABitmapTypes

Declaration

type IBGRAPath = interface(IInterface)

Description

Interface for path functions.

A path is the ability to define a contour with moveTo, lineTo...

Even if it is an interface, it must not implement reference counting.

Hierarchy

IInterface
IBGRAPath

Overview

Methods

	`function getCursor: TBGRACustomPathCursor;`
	`function getPoints: ArrayOfTPointF; overload;`
	`function getPoints(AMatrix: TAffineMatrix): ArrayOfTPointF; overload;`
	`procedure arc(constref arcDef: TArcDef);`
	`procedure bezierCurveTo(constref cp1,cp2,pt: TPointF);`
	`procedure closedSpline(const pts: array of TPointF; style: TSplineStyle);`
	`procedure closePath;`
	`procedure copyTo(dest: IBGRAPath);`
	`procedure fill(AFillProc: TBGRAPathFillProc; AData: pointer); overload;`
	`procedure fill(AFillProc: TBGRAPathFillProc; const AMatrix: TAffineMatrix; AData: pointer); overload;`
	`procedure lineTo(constref pt: TPointF);`
	`procedure moveTo(constref pt: TPointF);`
	`procedure openedSpline(const pts: array of TPointF; style: TSplineStyle);`
	`procedure polylineTo(const pts: array of TPointF);`
	`procedure quadraticCurveTo(constref cp,pt: TPointF);`
	`procedure stroke(ADrawProc: TBGRAPathDrawProc; AData: pointer); overload;`
	`procedure stroke(ADrawProc: TBGRAPathDrawProc; const AMatrix: TAffineMatrix; AData: pointer); overload;`

Description

Methods

	`function getCursor: TBGRACustomPathCursor;`
Returns a cursor to go through the path. The cursor must be freed by calling Free.

	`function getPoints: ArrayOfTPointF; overload;`
Returns the content of the path as an array of points

	`function getPoints(AMatrix: TAffineMatrix): ArrayOfTPointF; overload;`
Returns the content of the path as an array of points with the transformation specified by AMatrix

	`procedure arc(constref arcDef: TArcDef);`
Adds an `arc`. If there is a current point, it is connected to the beginning of the `arc`

	`procedure bezierCurveTo(constref cp1,cp2,pt: TPointF);`
Adds a cubic Bézier curve from the current point

	`procedure closedSpline(const pts: array of TPointF; style: TSplineStyle);`
Adds an closed spline. If there is a current point, it is connected to the beginning of the spline

	`procedure closePath;`
Closes the current path with a line to the starting point

	`procedure copyTo(dest: IBGRAPath);`
Copy the content of this path to the specified destination

	`procedure fill(AFillProc: TBGRAPathFillProc; AData: pointer); overload;`
Calls a given fill procedure for each sub path with computed coordinates for rendering

	`procedure fill(AFillProc: TBGRAPathFillProc; const AMatrix: TAffineMatrix; AData: pointer); overload;`
Calls a given `fill` procedure for each sub path with computed coordinates using given AMatrix transformation

	`procedure lineTo(constref pt: TPointF);`
Adds a line from the current point

	`procedure moveTo(constref pt: TPointF);`
Moves to a location, disconnected from previous points

	`procedure openedSpline(const pts: array of TPointF; style: TSplineStyle);`
Adds an opened spline. If there is a current point, it is connected to the beginning of the spline

	`procedure polylineTo(const pts: array of TPointF);`
Adds a polyline from the current point

	`procedure quadraticCurveTo(constref cp,pt: TPointF);`
Adds a quadratic Bézier curve from the current point

	`procedure stroke(ADrawProc: TBGRAPathDrawProc; AData: pointer); overload;`
Calls a given draw procedure for each sub path with computed coordinates for rendering

	`procedure stroke(ADrawProc: TBGRAPathDrawProc; const AMatrix: TAffineMatrix; AData: pointer); overload;`
Calls a given draw procedure for each sub path with computed coordinates using given AMatrix transformation