1 -- Created on: 1991-10-10
2 -- Created by: Jean Claude VAUTHIER
3 -- Copyright (c) 1991-1999 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 HyperbolaToBSplineCurve from Convert inherits ConicToBSplineCurve
20 -- This algorithm converts a hyperbola into a rational B-spline curve.
21 -- The hyperbola is an Hypr2d from package gp with the
24 -- Loc + (MajorRadius * Cosh(U) * Xdir + MinorRadius * Sinh(U) * Ydir)
25 -- where Loc is the location point of the hyperbola, Xdir and Ydir are
26 -- the normalized directions of the local cartesian coordinate system
29 -- Convert, Hyperbola, BSplineCurve, 2D .
36 Create (H : Hypr2d; U1, U2 : Real) returns HyperbolaToBSplineCurve;
38 -- The hyperbola H is limited between the parametric values U1, U2
39 -- and the equivalent B-spline curve has the same orientation as the
43 end HyperbolaToBSplineCurve;