FGX.Canvas.Types.TfgPath

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Delphi

TfgPath = class (TfgPersistent)

Описание

Описание отсутствует.

Конструкторы

constructor

Create(AOwner: TPersistent)

Методы

function	MoveTo(const APoint: TPointF): TfgPath Start a new sub-path at the given (x,y) coordinate. Absolute coordinates will follow. If a moveto is followed by multiple pairs of coordinates, the subsequent pairs are treated as implicit lineto commands. Hence, implicit lineto commands will be relative if the moveto is relative, and absolute if the moveto is absolute. If a relative moveto (m) appears as the first element of the path, then it is treated as a pair of absolute coordinates. In this case, subsequent pairs of coordinates are treated as relative even though the initial moveto is interpreted as an absolute moveto.
function	MoveTo(const AX: Single; const AY: Single): TfgPath
function	MoveToRel(const AVector: TPointF): TfgPath Start a new sub-path at the given (x,y) coordinate. Relative coordinates will follow. If a moveto is followed by multiple pairs of coordinates, the subsequent pairs are treated as implicit lineto commands. Hence, implicit lineto commands will be relative if the moveto is relative, and absolute if the moveto is absolute. If a relative moveto (m) appears as the first element of the path, then it is treated as a pair of absolute coordinates. In this case, subsequent pairs of coordinates are treated as relative even though the initial moveto is interpreted as an absolute moveto.
function	MoveToRel(const ADX: Single; const ADY: Single): TfgPath
function	LineTo(const APoint: TPointF): TfgPath
function	LineTo(const AX: Single; const AY: Single): TfgPath
function	LineToRel(const AVector: TPointF): TfgPath
function	LineToRel(const ADX: Single; const ADY: Single): TfgPath
function	HLineTo(const AX: Single): TfgPath
function	HLineToRel(const AX: Single): TfgPath
function	VLineTo(const AY: Single): TfgPath
function	VLineToRel(const AY: Single): TfgPath
function	AddCurve(const AControlPoint1: TPointF; const AControlPoint2: TPointF; const AEndPoint: TPointF): TfgPath
function	AddCurveRel(const AControlPoint1: TPointF; const AControlPoint2: TPointF; const AEndPoint: TPointF): TfgPath
function	AddSmoothCurve(const AControlPoint2: TPointF; const AEndPoint: TPointF): TfgPath
function	AddSmoothCurveRel(const AControlPoint2: TPointF; const AEndPoint: TPointF): TfgPath
function	AddQuadraticCurve(const AControlPoint1: TPointF; const AEndPoint: TPointF): TfgPath Draws a quadratic Bézier curve from the current point to (x,y) using (x1,y1) as the control point. Absolute coordinates will follow. Multiple sets of coordinates may be specified to draw a polybézier. At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier.
function	AddQuadraticCurveRel(const AControlPoint1: TPointF; const AEndPoint: TPointF): TfgPath Draws a quadratic Bézier curve from the current point to (x,y) using (x1,y1) as the control point. Relative coordinates will follow. Multiple sets of coordinates may be specified to draw a polybézier. At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier.
function	AddSmoothQuadraticCurve(const AEndPoint: TPointF): TfgPath Draws a quadratic Bézier curve from the current point to (x,y). The control point is assumed to be the reflection of the control point on the previous command relative to the current point. (If there is no previous command or if the previous command was not a Q, q, T or t, assume the control point is coincident with the current point.) Absolute coordinates will follow; At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier.
function	AddSmoothQuadraticCurveRel(const AEndPoint: TPointF): TfgPath Draws a quadratic Bézier curve from the current point to (x,y). The control point is assumed to be the reflection of the control point on the previous command relative to the current point. (If there is no previous command or if the previous command was not a Q, q, T or t, assume the control point is coincident with the current point.) Relative coordinates will follow; At the end of the command, the new current point becomes the final (x,y) coordinate pair used in the polybézier.
function	AddArc(const ARect: TRectF; const AStartAngle: Single; const ASweepAngle: Single): TfgPath Добавляет дугу эллипса, вписанного в область ARect . Начало дуги задается углом AStartAngle в градусах. Конец дуги задается дельтой ASweepAngle в градусах, которая прибавляется к AStartAngle .
function	AddPath(const APath: TfgPath): TfgPath
function	ClosePath(): TfgPath
procedure	Clear()
procedure	FitInto(const ANewBounds: TRectF)
procedure	Translate(const AOffset: TPointF)
function	CalculateFrame(): TRectF Вычисляет выпуклую оболочку расположения всего пути в локальных координатах пути.
function	FirstPoint(): TPointF Возвращает первую точку в пути. Если ни одной точки нет, то вернет (0, 0).
function	LastPoint(): TPointF Возвращает последнюю точку в пути. Если ни одной точки нет, то вернет (0, 0).
function	ToString(): string

Свойства

property	Count: Integer
property	Points[AIndex]: TfgPathPoint