include/opencascade/Geom2dConvert_CompCurveToBSplineCurve.hxx

0001 // Created on: 1997-04-29
0002 // Created by: Stagiaire Francois DUMONT
0003 // Copyright (c) 1997-1999 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 _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile
0018 #define _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Convert_ParameterisationType.hxx>
0025 class Geom2d_BSplineCurve;
0026 class Geom2d_BoundedCurve;
0027
0028 //! This algorithm converts and concat several curve in an BSplineCurve
0029 class Geom2dConvert_CompCurveToBSplineCurve
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Initialize the algorithme
0035   //! - Parameterisation is used to convert
0036   Standard_EXPORT Geom2dConvert_CompCurveToBSplineCurve(
0037     const Convert_ParameterisationType Parameterisation = Convert_TgtThetaOver2);
0038
0039   //! Initialize the algorithme with one curve
0040   //! - Parameterisation is used to convert
0041   Standard_EXPORT Geom2dConvert_CompCurveToBSplineCurve(
0042     const Handle(Geom2d_BoundedCurve)& BasisCurve,
0043     const Convert_ParameterisationType Parameterisation = Convert_TgtThetaOver2);
0044
0045   //! Append a curve in the BSpline
0046   //! Return False if the curve is not G0 with the BSplineCurve.
0047   //! Tolerance is used to check continuity and decrease
0048   //! Multiplicity at the common Knot
0049   //! After is useful if BasisCurve is a closed curve .
0050   Standard_EXPORT Standard_Boolean Add(const Handle(Geom2d_BoundedCurve)& NewCurve,
0051                                        const Standard_Real                Tolerance,
0052                                        const Standard_Boolean             After = Standard_False);
0053
0054   Standard_EXPORT Handle(Geom2d_BSplineCurve) BSplineCurve() const;
0055
0056   //! Clear result curve
0057   Standard_EXPORT void Clear();
0058
0059 protected:
0060 private:
0061   //! Concat two BSplineCurves.
0062   Standard_EXPORT void Add(Handle(Geom2d_BSplineCurve)& FirstCurve,
0063                            Handle(Geom2d_BSplineCurve)& SecondCurve,
0064                            const Standard_Boolean       After);
0065
0066   Handle(Geom2d_BSplineCurve)  myCurve;
0067   Standard_Real                myTol;
0068   Convert_ParameterisationType myType;
0069 };
0070
0071 #endif // _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile