-- Created on: 1991-10-10
-- Created by: Jean Claude VAUTHIER
-- Copyright (c) 1991-1999 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 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 HyperbolaToBSplineCurve   from Convert   inherits ConicToBSplineCurve

        --- Purpose :
        --  This algorithm converts a hyperbola into a rational B-spline curve.
        --  The hyperbola is an Hypr2d from package gp with the
        --  parametrization :
        --  P (U) = 
        --  Loc + (MajorRadius * Cosh(U) * Xdir + MinorRadius * Sinh(U) * Ydir)
        --  where Loc is the location point of the hyperbola, Xdir and Ydir are
        --  the normalized directions of the local cartesian coordinate system
        --  of the hyperbola.
        --- KeyWords :
        --  Convert, Hyperbola, BSplineCurve, 2D .

uses Hypr2d from gp

is


  Create (H : Hypr2d; U1, U2 : Real)   returns HyperbolaToBSplineCurve;
        --- Purpose : 
        --  The hyperbola H is limited between the parametric values U1, U2
        --  and the equivalent B-spline curve has the same orientation as the
        --  hyperbola.


end HyperbolaToBSplineCurve;