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 // 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.
 
 #ifndef _GCE2d_MakeHyperbola_HeaderFile
 #define _GCE2d_MakeHyperbola_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <GCE2d_Root.hxx>
 #include <Geom2d_Hyperbola.hxx>
 
 class gp_Hypr2d;
 class gp_Ax2d;
 class gp_Ax22d;
 class gp_Pnt2d;
 
 //! This class implements the following algorithms used to
 //! create Hyperbola from Geom2d.
 //! * Create an Hyperbola from two apex  and the center.
 //! Defines the main branch of an hyperbola.
 //! The parameterization range is ]-infinite,+infinite[
 //! It is possible to get the other branch and the two conjugate
 //! branches of the main branch.
 //!
 //! ^YAxis
 //! |
 //! FirstConjugateBranch
 //! |
 //! Other            |                Main
 //! --------------------- C ------------------------------>XAxis
 //! Branch           |                Branch
 //! |
 //! SecondConjugateBranch
 //! |
 //!
 //! The major radius is the distance between the Location point
 //! of the hyperbola C and the apex of the main Branch (or the
 //! Other branch). The major axis is the "XAxis".
 //! The minor radius is the distance between the Location point
 //! of the hyperbola C and the apex of the First (or Second)
 //! Conjugate branch. The minor axis is the "YAxis".
 //! The major radius can be lower than the minor radius.
 class GCE2d_MakeHyperbola : public GCE2d_Root
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   //! Creates  an Hyperbola from a non persistent one from package gp
   Standard_EXPORT GCE2d_MakeHyperbola(const gp_Hypr2d& H);
 
   //! MajorAxis is the "XAxis" of the hyperbola.
   //! The major radius of the hyperbola is on this "XAxis" and
   //! the minor radius is on the "YAxis" of the hyperbola.
   //! The status is "NegativeRadius" if MajorRadius < 0.0 or if
   //! MinorRadius < 0.0
   Standard_EXPORT GCE2d_MakeHyperbola(const gp_Ax2d&         MajorAxis,
                                       const Standard_Real    MajorRadius,
                                       const Standard_Real    MinorRadius,
                                       const Standard_Boolean Sense);
 
   //! Axis is the local coordinate system of the hyperbola.
   //! The major radius of the hyperbola is on this "XAxis" and
   //! the minor radius is on the "YAxis" of the hyperbola.
   //! The status is "NegativeRadius" if MajorRadius < 0.0 or if
   //! MinorRadius < 0.0
   Standard_EXPORT GCE2d_MakeHyperbola(const gp_Ax22d&     Axis,
                                       const Standard_Real MajorRadius,
                                       const Standard_Real MinorRadius);
 
   //! Creates a hyperbol centered on the origin of the coordinate system
   //! Axis, with major and minor radii MajorRadius and
   //! MinorRadius, where the major axis is the "X Axis"
   //! of Axis (Axis is the local coordinate system of the hyperbola).
   //! The implicit orientation of the ellipse is:
   //! -   the sense defined by Axis or H,
   //! -   the sense defined by points Center, S1 and S2,
   //! -   the trigonometric sense if Sense is not given or is true, or
   //! -   the opposite sense if Sense is false.
   //! Warning
   //! If an error occurs (that is, when IsDone returns
   //! false), the Status function returns:
   //! -   gce_NegativeRadius if MajorRadius or
   //! MinorRadius is less than 0.0, or
   //! -   gce_InvertAxis if the major radius defined by
   //! Center and S1 is less than the minor radius
   //! defined by Center, S1 and S2.Make an Hyperbola with its center and two apexes.
   Standard_EXPORT GCE2d_MakeHyperbola(const gp_Pnt2d& S1,
                                       const gp_Pnt2d& S2,
                                       const gp_Pnt2d& Center);
 
   //! Returns the constructed hyperbola.
   //! Exceptions: StdFail_NotDone if no hyperbola is constructed.
   Standard_EXPORT const Handle(Geom2d_Hyperbola)& Value() const;
 
   operator const Handle(Geom2d_Hyperbola) & () const { return Value(); }
 
 private:
   Handle(Geom2d_Hyperbola) TheHyperbola;
 };
 
 #endif // _GCE2d_MakeHyperbola_HeaderFile

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