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 #ifndef _GC_MakeHyperbola_HeaderFile
18 #define _GC_MakeHyperbola_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <GC_Root.hxx>
25 #include <Geom_Hyperbola.hxx>
27 class StdFail_NotDone;
33 //! This class implements construction algorithms for a hyperbola in
34 //! 3D space. The result is a Geom_Hyperbola hyperbola.
35 //! A MakeHyperbola object provides a framework for:
36 //! - defining the construction of the hyperbola,
37 //! - implementing the construction algorithm, and
38 //! - consulting the results. In particular, the Value
39 //! function returns the constructed hyperbola.
40 //! To define the main branch of an hyperbola.
41 //! The parameterization range is ]-infinite,+infinite[
42 //! It is possible to get the other branch and the two conjugate
43 //! branches of the main branch.
47 //! FirstConjugateBranch
50 //! --------------------- C ------------------------------>XAxis
53 //! SecondConjugateBranch
56 //! The major radius is the distance between the Location point
57 //! of the hyperbola C and the apex of the Main Branch (or the
58 //! Other branch). The major axis is the XAxis.
59 //! The minor radius is the distance between the Location point
60 //! of the hyperbola C and the apex of the First (or Second)
61 //! Conjugate branch. The minor axis is the YAxis.
62 //! The major radius can be lower than the minor radius.
63 class GC_MakeHyperbola : public GC_Root
71 //! Creates an Hyperbola from a non persistent hyperbola from package gp by conversion.
72 Standard_EXPORT GC_MakeHyperbola(const gp_Hypr& H);
74 //! Constructs a hyperbola centered on the origin of the coordinate system
75 //! A2, with major and minor radii MajorRadius and MinorRadius, where:
76 //! the plane of the hyperbola is defined by the "X Axis" and "Y Axis" of A2,
77 //! - its major axis is the "X Axis" of A2.
78 Standard_EXPORT GC_MakeHyperbola(const gp_Ax2& A2, const Standard_Real MajorRadius, const Standard_Real MinorRadius);
80 //! Constructs a hyperbola centered on the point Center, where
81 //! - the plane of the hyperbola is defined by Center, S1 and S2,
82 //! - its major axis is defined by Center and S1,
83 //! - its major radius is the distance between Center and S1, and
84 //! - its minor radius is the distance between S2 and the major axis;
85 Standard_EXPORT GC_MakeHyperbola(const gp_Pnt& S1, const gp_Pnt& S2, const gp_Pnt& Center);
87 //! Returns the constructed hyperbola.
88 //! Exceptions StdFail_NotDone if no hyperbola is constructed.
89 Standard_EXPORT const Handle(Geom_Hyperbola)& Value() const;
91 operator const Handle(Geom_Hyperbola)& () const { return Value(); }
94 Handle(Geom_Hyperbola) TheHyperbola;
97 #endif // _GC_MakeHyperbola_HeaderFile