EllipseComp3

Usage

Overview

EllipseComp is a GraphicComp that defines an ellipse. It uses an Ellipse graphic to store its graphical attributes. EllipseView is a GraphicView for displaying the ellipse. PSEllipse is a PostScriptView that externalizes the subject's information in PostScript form.

Ellipsecomp public operations

EllipseComp(SF_Ellipse* = nil)

The constructor takes an optional stroked-filled ellipse that defines the attributes of the ellipse.

SF_Ellipse* GetEllipse()

Return the SF_Ellipse graphic that defines the ellipse's attributes. GetEllipse is simply a more specific form of the GetGraphic operation.

Ellipseview public operations

EllipseView(EllipseComp* = nil)

Create an EllipseView, optionally supplying the subject.

virtual void Interpret(Command*)

EllipseView interprets AlignToGridCmd to align its center to the grid.

virtual Manipulator* CreateManipulator(

Viewer*, Event&, Transformer*, Tool*

)

virtual void InterpretManipulator(Manipulator*)

EllipseView redefines its response to manipulation with a GraphicCompTool. The user clicks to specify the center of the ellipse and then drags to vary its axes. The center and the axes will be constrained by gravity, if any.

EllipseComp* GetEllipseComp()

Return the subject.

Psellipse public operations

PSEllipse(EllipseComp* = nil)

Construct a PostScript external representation of the given subject, if any.