include/opencascade/Convert_ConeToBSplineSurface.hxx

0001 // Created on: 1991-10-10
0002 // Created by: Jean Claude VAUTHIER
0003 // Copyright (c) 1991-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _Convert_ConeToBSplineSurface_HeaderFile
0018 #define _Convert_ConeToBSplineSurface_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Convert_ElementarySurfaceToBSplineSurface.hxx>
0025 class gp_Cone;
0026
0027 //! This algorithm converts a bounded Cone into a rational
0028 //! B-spline  surface.
0029 //! The cone a Cone from package gp. Its parametrization is :
0030 //! P (U, V) =  Loc + V * Zdir +
0031 //! (R + V*Tan(Ang)) * (Cos(U)*Xdir + Sin(U)*Ydir)
0032 //! where Loc is the location point of the cone, Xdir, Ydir and Zdir
0033 //! are the normalized directions of the local cartesian coordinate
0034 //! system of the cone (Zdir is the direction of the Cone's axis) ,
0035 //! Ang is the cone semi-angle.  The U parametrization range is
0036 //! [0, 2PI].
0037 //! KeyWords :
0038 //! Convert, Cone, BSplineSurface.
0039 class Convert_ConeToBSplineSurface : public Convert_ElementarySurfaceToBSplineSurface
0040 {
0041 public:
0042   DEFINE_STANDARD_ALLOC
0043
0044   //! The equivalent B-spline surface as the same orientation as the
0045   //! Cone in the U and V parametric directions.
0046   //!
0047   //! Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
0048   //! Raised if V1 = V2.
0049   Standard_EXPORT Convert_ConeToBSplineSurface(const gp_Cone&      C,
0050                                                const Standard_Real U1,
0051                                                const Standard_Real U2,
0052                                                const Standard_Real V1,
0053                                                const Standard_Real V2);
0054
0055   //! The equivalent B-spline surface as the same orientation as the
0056   //! Cone in the U and V parametric directions.
0057   //!
0058   //! Raised if V1 = V2.
0059   Standard_EXPORT Convert_ConeToBSplineSurface(const gp_Cone&      C,
0060                                                const Standard_Real V1,
0061                                                const Standard_Real V2);
0062
0063 protected:
0064 private:
0065 };
0066
0067 #endif // _Convert_ConeToBSplineSurface_HeaderFile