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
0028
0029 //! This algorithm converts a bounded cylinder into a rational
0030 //! B-spline surface. The cylinder is a Cylinder from package gp.
0031 //! The parametrization of the cylinder is  :
0032 //! P (U, V) = Loc + V * Zdir + Radius * (Xdir*Cos(U) + Ydir*Sin(U))
0033 //! where Loc is the location point of the cylinder, Xdir, Ydir and
0034 //! Zdir are the normalized directions of the local cartesian
0035 //! coordinate system of the cylinder (Zdir is the direction of the
0036 //! cylinder's axis). The U parametrization range is U [0, 2PI].
0037 //! KeyWords :
0038 //! Convert, Cylinder, BSplineSurface.
0039 class Convert_CylinderToBSplineSurface  : public Convert_ElementarySurfaceToBSplineSurface
0040 {
0041 public:
0042
0043   DEFINE_STANDARD_ALLOC
0044
0045
0046
0047   //! The equivalent B-splineSurface as the same orientation as the
0048   //! cylinder in the U and V parametric directions.
0049   //!
0050   //! Raised if U1 = U2 or U1 = U2 + 2.0 * Pi
0051   //! Raised if V1 = V2.
0052   Standard_EXPORT Convert_CylinderToBSplineSurface(const gp_Cylinder& Cyl, const Standard_Real U1, const Standard_Real U2, const Standard_Real V1, const Standard_Real V2);
0053
0054
0055   //! The equivalent B-splineSurface as the same orientation as the
0056   //! cylinder in the U and V parametric directions.
0057   //!
0058   //! Raised if V1 = V2.
0059   Standard_EXPORT Convert_CylinderToBSplineSurface(const gp_Cylinder& Cyl, const Standard_Real V1, const Standard_Real V2);
0060
0061
0062
0063
0064 protected:
0065
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0069
0070 private:
0071
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0074
0075
0076 };
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0083
0084 #endif // _Convert_CylinderToBSplineSurface_HeaderFile