include/opencascade/Convert_CylinderToBSplineSurface.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_CylinderToBSplineSurface_HeaderFile
0018 #define _Convert_CylinderToBSplineSurface_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_Cylinder;
0026
0027 //! This algorithm converts a bounded cylinder into a rational
0028 //! B-spline surface. The cylinder is a Cylinder from package gp.
0029 //! The parametrization of the cylinder is:
0030 //! P (U, V) = Loc + V * Zdir + Radius * (Xdir*std::cos(U) + Ydir*Sin(U))
0031 //! where Loc is the location point of the cylinder, Xdir, Ydir and
0032 //! Zdir are the normalized directions of the local cartesian
0033 //! coordinate system of the cylinder (Zdir is the direction of the
0034 //! cylinder's axis). The U parametrization range is U [0, 2PI].
0035 //! KeyWords :
0036 //! Convert, Cylinder, BSplineSurface.
0037 class Convert_CylinderToBSplineSurface : public Convert_ElementarySurfaceToBSplineSurface
0038 {
0039 public:
0040   DEFINE_STANDARD_ALLOC
0041
0042   //! The equivalent B-splineSurface as the same orientation as the
0043   //! cylinder in the U and V parametric directions.
0044   //!
0045   //! Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
0046   //! Raised if V1 = V2.
0047   Standard_EXPORT Convert_CylinderToBSplineSurface(const gp_Cylinder& Cyl,
0048                                                    const double       U1,
0049                                                    const double       U2,
0050                                                    const double       V1,
0051                                                    const double       V2);
0052
0053   //! The equivalent B-splineSurface as the same orientation as the
0054   //! cylinder in the U and V parametric directions.
0055   //!
0056   //! Raised if V1 = V2.
0057   Standard_EXPORT Convert_CylinderToBSplineSurface(const gp_Cylinder& Cyl,
0058                                                    const double       V1,
0059                                                    const double       V2);
0060 };
0061
0062 #endif // _Convert_CylinderToBSplineSurface_HeaderFile