1 -- Created on: 1992-09-28
2 -- Created by: Remi GILET
3 -- Copyright (c) 1992-1999 Matra Datavision
4 -- Copyright (c) 1999-2014 OPEN CASCADE SAS
6 -- This file is part of Open CASCADE Technology software library.
8 -- This library is free software; you can redistribute it and/or modify it under
9 -- the terms of the GNU Lesser General Public License version 2.1 as published
10 -- by the Free Software Foundation, with special exception defined in the file
11 -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 -- distribution for complete text of the license and disclaimer of any warranty.
14 -- Alternatively, this file may be used under the terms of Open CASCADE
15 -- commercial license or contractual agreement.
17 class MakeArcOfEllipse from GC inherits Root from GC
19 ---Purpose: Implements construction algorithms for an arc
20 -- of ellipse in 3D space. The result is a Geom_TrimmedCurve curve.
21 -- A MakeArcOfEllipse object provides a framework for:
22 -- - defining the construction of the arc of ellipse,
23 -- - implementing the construction algorithm, and
24 -- - consulting the results. In particular, the
25 -- Value function returns the constructed arc of ellipse.
32 TrimmedCurve from Geom
34 raises NotDone from StdFail
38 Create(Elips : Elips from gp ;
39 Alpha1, Alpha2 : Real from Standard ;
40 Sense : Boolean from Standard ) returns MakeArcOfEllipse;
41 ---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
42 -- a Ellipse between two parameters Alpha1 and Alpha2.
44 Create(Elips : Elips from gp ;
46 Alpha : Real from Standard ;
47 Sense : Boolean from Standard ) returns MakeArcOfEllipse;
48 ---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
49 -- a Ellipse between point <P> and the angle Alpha
52 Create(Elips : Elips from gp ;
55 Sense : Boolean from Standard ) returns MakeArcOfEllipse;
56 ---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
57 -- a Ellipse between two points P1 and P2.
58 -- The orientation of the arc of ellipse is:
59 -- - the sense of Elips if Sense is true, or
60 -- - the opposite sense if Sense is false.
62 -- - Alpha1, Alpha2 and Alpha are angle values, given in radians.
63 -- - IsDone always returns true.
65 Value(me) returns TrimmedCurve from Geom
69 ---Purpose: Returns the constructed arc of ellipse.
70 ---C++: alias "operator const Handle(Geom_TrimmedCurve)& () const { return Value(); }"
74 TheArc : TrimmedCurve from Geom;
75 --The solution from Geom.