include/opencascade/Convert_TorusToBSplineSurface.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_TorusToBSplineSurface_HeaderFile
0018 #define _Convert_TorusToBSplineSurface_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Convert_ElementarySurfaceToBSplineSurface.hxx>
0025 #include <Standard_Boolean.hxx>
0026 class gp_Torus;
0027
0028
0029
0030 //! This algorithm converts a bounded Torus into a rational
0031 //! B-spline surface. The torus is a Torus from package gp.
0032 //! The parametrization of the torus is :
0033 //! P (U, V) =
0034 //! Loc  +  MinorRadius * Sin(V) * Zdir +
0035 //! (MajorRadius+MinorRadius*Cos(V)) *  (Cos(U)*Xdir + Sin(U)*Ydir)
0036 //! where Loc is the center of the torus, Xdir, Ydir and Zdir are the
0037 //! normalized directions of the local cartesian coordinate system of
0038 //! the Torus. The parametrization range is U [0, 2PI], V [0, 2PI].
0039 //! KeyWords :
0040 //! Convert, Torus, BSplineSurface.
0041 class Convert_TorusToBSplineSurface  : public Convert_ElementarySurfaceToBSplineSurface
0042 {
0043 public:
0044
0045   DEFINE_STANDARD_ALLOC
0046
0047
0048
0049   //! The equivalent B-spline surface as the same orientation as the
0050   //! torus in the U and V parametric directions.
0051   //!
0052   //! Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
0053   //! Raised if V1 = V2 or V1 = V2 + 2.0 * Pi
0054   Standard_EXPORT Convert_TorusToBSplineSurface(const gp_Torus& T, const Standard_Real U1, const Standard_Real U2, const Standard_Real V1, const Standard_Real V2);
0055
0056
0057   //! The equivalent B-spline surface as the same orientation as the
0058   //! torus in the U and V parametric directions.
0059   //!
0060   //! Raised if Param1 = Param2 or Param1 = Param2 + 2.0 * Pi
0061   Standard_EXPORT Convert_TorusToBSplineSurface(const gp_Torus& T, const Standard_Real Param1, const Standard_Real Param2, const Standard_Boolean UTrim = Standard_True);
0062
0063
0064   //! The equivalent B-spline surface as the same orientation as the
0065   //! torus in the U and V parametric directions.
0066   Standard_EXPORT Convert_TorusToBSplineSurface(const gp_Torus& T);
0067
0068
0069
0070
0071 protected:
0072
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0074
0075
0076
0077 private:
0078
0079
0080
0081
0082
0083 };
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0090
0091 #endif // _Convert_TorusToBSplineSurface_HeaderFile