-- Created on: 1992-09-28 -- Created by: Remi GILET -- Copyright (c) 1992-1999 Matra Datavision -- Copyright (c) 1999-2014 OPEN CASCADE SAS -- -- This file is part of Open CASCADE Technology software library. -- -- This library is free software; you can redistribute it and/or modify it under -- the terms of the GNU Lesser General Public License version 2.1 as published -- by the Free Software Foundation, with special exception defined in the file -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT -- distribution for complete text of the license and disclaimer of any warranty. -- -- Alternatively, this file may be used under the terms of Open CASCADE -- commercial license or contractual agreement. class MakeEllipse from GC inherits Root from GC ---Purpose :This class implements construction algorithms for an ellipse in -- 3D space. The result is a Geom_Ellipse ellipse. -- A MakeEllipse object provides a framework for: -- - defining the construction of the ellipse, -- - implementing the construction algorithm, and -- - consulting the results. In particular, the Value -- function returns the constructed ellipse. uses Pnt from gp, Ax2 from gp, Hypr from gp, Ellipse from Geom, Elips from gp raises NotDone from StdFail is Create (E : Elips from gp) returns MakeEllipse; --- Purpose : -- Creates an ellipse from a non persistent ellipse E from package gp by its conversion. Create (A2 : Ax2 from gp ; MajorRadius, MinorRadius : Real from Standard) returns MakeEllipse; --- Purpose : Constructs an ellipse with major and minor radii MajorRadius and -- MinorRadius, and located in the plane defined by -- the "X Axis" and "Y Axis" of the coordinate system A2, where: -- - its center is the origin of A2, and -- - its major axis is the "X Axis" of A2; -- Warnings : -- The MakeEllipse class does not prevent the -- construction of an ellipse where MajorRadius is equal to MinorRadius. -- If an error occurs (that is, when IsDone returns -- false), the Status function returns: -- - gce_InvertRadius if MajorRadius is less than MinorRadius; -- - gce_NegativeRadius if MinorRadius is less than 0.0; -- - gce_NullAxis if the points S1 and Center are coincident; or -- - gce_InvertAxis if: -- - the major radius computed with Center and S1 -- is less than the minor radius computed with Center, S1 and S2, or -- - Center, S1 and S2 are collinear. Create(S1,S2 : Pnt from gp; Center : Pnt from gp) returns MakeEllipse; ---Purpose: Constructs an ellipse centered on the point Center, where -- - the plane of the ellipse is defined by Center, S1 and S2, -- - its major axis is defined by Center and S1, -- - its major radius is the distance between Center and S1, and -- - its minor radius is the distance between S2 and the major axis. Value(me) returns Ellipse from Geom raises NotDone is static; ---Purpose: Returns the constructed ellipse. -- Exceptions StdFail_NotDone if no ellipse is constructed. ---C++: return const& Operator(me) returns Ellipse from Geom is static; ---C++: return const& ---C++: alias "Standard_EXPORT operator Handle_Geom_Ellipse() const;" fields TheEllipse : Ellipse from Geom; --The solution from Geom. end MakeEllipse;