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Full Discussion: Returns points of an ellipse
Top Forums Shell Programming and Scripting Returns points of an ellipse Post 302786027 by DGPickett on Tuesday 26th of March 2013 04:55:37 PM
Old 03-26-2013
Is a 3d ellipse a 2d ellipse on a plane in 3D? Standard rotation, translation and scaling would return you to a unit ellipse in the xy z=0 plane. And vice-versa, in reverse order.
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EllipseComp(3U) 					    InterViews Reference Manual 					   EllipseComp(3U)

NAME
EllipseComp, EllipseView, PSEllipse - ellipse component subject, view, and PostScript external representation SYNOPSIS
#include <Unidraw/Components/ellipse.h> DESCRIPTION
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. SEE ALSO
GraphicComp(3U), GraphicCompTool(3U), GraphicView(3U), Grid(3U), PostScriptView(3U), align(3U), ellipses(3U) Unidraw 22 January 1991 EllipseComp(3U)
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