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Navigation: Code Documentation > RSVML > RSGdiPlusCtrls > Classes

TRSGPCircle Class

TRSGPCircle defines 2D circles.

The following TRSGPCircle properties define the circle size and position:

• The bounding rectangle ShapeRect of TRSGPCircle defines the bounding square for the circle:
The length of the bounding square sides equals to Min(Width, Height) of the ShapeRect bounding rectangle.
The bounding square center coincides with the center of the bounding rectangle.

• The TRSGPCircle shape is inscribed into the obtained bounding square.

• You can use the Scale scaling factors of the TRSGPCircle object to proportionally scale circle coordinates along local coordinate axes. Scaling moves the circle and changes its size.

• You can use the rotation axis RotationCenter and rotation angle RotationAngle of the TRSGPCircle object to modify the circle shape and position.

TRSGPCircle draws the contour and fills the shape background with the Paint method.

Paint draws the contour and fills the background using the drawing pen and brush with the properties, color, and opacity defined by the Stroke and Fill properties of the TRSGPCircle object.

Namespace: RSGdiPlusCtrls

	Name	Description
	Create(TComponent)	Initializes a new instance of the TRSGPShape class. (Overrides RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.Create(TComponent).)

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	Name	Description
	AbsoluteMatrix	Specifies the absolute transformation matrix of the control. AbsoluteMatrix is calculated using Matrix and AbsoluteMatrix of its parent (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	Align	Represents property Align. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Anchors	Represents property Anchors. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Canvas	Represents property Canvas. (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	ClipChildren	Represents property ClipChildren. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Constraints	Represents property Constraints. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Cursor	Represents property Cursor. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	DragCursor	Represents property DragCursor. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	DragKind	Represents property DragKind. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	DragMode	Represents property DragMode. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Fill	Represents property Fill. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	InterceptMouse	Determines whether mouse clicks should be detected for the control (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	Matrix	Specifies the local transformation matrix of the control (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	OnClick	Represents property OnClick. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnContextPopup	Represents property OnContextPopup. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnDblClick	Represents property OnDblClick. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnDragDrop	Represents property OnDragDrop. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnDragOver	Represents property OnDragOver. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnEndDock	Represents property OnEndDock. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnEndDrag	Represents property OnEndDrag. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnGesture	Represents property OnGesture. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseActivate	Represents property OnMouseActivate. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseDown	Represents property OnMouseDown. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseEnter	Represents property OnMouseEnter. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseLeave	Represents property OnMouseLeave. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseMove	Represents property OnMouseMove. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnMouseUp	Represents property OnMouseUp. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnPaint	Represents property OnPaint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnPainting	Represents property OnPainting. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnStartDock	Represents property OnStartDock. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	OnStartDrag	Represents property OnStartDrag. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Opacity	Represents property Opacity. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	ParentShowHint	Represents property ParentShowHint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	PopupMenu	Represents property PopupMenu. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	ShapeRect	Returns the rectangle for drawing the shape. The coordinates of the upper-left corner of the rectangle are (0,0), and the coordinates of the lower-right corner are (Width, Height). (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	ShowHint	Represents property ShowHint. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Stroke	Represents property Stroke. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Touch	Represents property Touch. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Transform	Represents property Transform. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)
	Visible	Represents property Visible. (Inherited from RSGdiPlusCtrls.TRSGPEllipse.)

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	Name	Description
	CreateGdiPCanvas	Creates a GDI+ canvas for the control. The calling routine is responsible for freeing the GDI+ canvas (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	DoPaint	Override this method to paint the control (Overrides RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.DoPaint.)
	DoPainted	Occurs just after painting. Calls the OnPaint event (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	DoPainting	Occurs just before painting. Calls the OnPainting event (Inherited from RSGdiPlusCtrls.TRSCustomTransparentGraphicControl.)
	GetAbsoluteMatrix	Returns the absolute transformation matrix of the control. AbsoluteMatrix is calculated using Matrix and AbsoluteMatrix of its parent (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetMatrix	Returns the local transformation matrix of the control (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetOpacity	Returns the control opacity. (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	GetShapeRectForRot(TObject,TRSRect)	Represents method GetShapeRectForRot(TObject,TRSRect). (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	ObjectChanged(TObject)	Represents method ObjectChanged(TObject). (Inherited from RSGdiPlusCtrls.TRSGPShape.)
	Paint(TRSGPCanvas,TRSGPMatrix,Single)	Represents method Paint(TRSGPCanvas,TRSGPMatrix,Single). (Overrides RSGdiPlusCtrls.TRSGPEllipse.Paint(TRSGPCanvas,TRSGPMatrix,Single).)
	PointInObject(Integer,Integer)	Overloaded. Checks whether the point, specified by the absolute coordinates, belongs to the control area. PointInObject returns True if the specified point belongs to the control area, and False otherwise. The X and Y are the absolute coordinates (relative to the main form) of the point to be checked. The points of the control boundary specified by BoundsRect belong to the control and PointInObject returns True for them.
	PointInObject(Single,Single)	Checks whether the point, specified by the absolute coordinates, belongs to the control area. PointInObject returns True if the specified point belongs to the control area, and False otherwise. The X and Y are the absolute coordinates (relative to the main form) of the point to be checked. The points of the control boundary specified by BoundsRect belong to the control and PointInObject returns True for them.
	SetOpacity(Single)	Sets the control opacity. Set Opacity to customize the transparency of the current control. Opacity takes values between 0 and 1. If Opacity is 1, the control is completely opaque; if it is 0, the control is completely transparent. The values over 1 are treated as 1, and the ones under 0 are treated as 0. Opacity applies to the control's children.

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