include/opencascade/GeomConvert_CompCurveToBSplineCurve.hxx

0001 // Created on: 1996-09-23
0002 // Created by: Philippe MANGIN
0003 // Copyright (c) 1996-1999 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 _GeomConvert_CompCurveToBSplineCurve_HeaderFile
0018 #define _GeomConvert_CompCurveToBSplineCurve_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Convert_ParameterisationType.hxx>
0025 #include <Standard_Integer.hxx>
0026 class Geom_BSplineCurve;
0027 class Geom_BoundedCurve;
0028
0029 //! Algorithm converts and concat several curve in an BSplineCurve
0030 class GeomConvert_CompCurveToBSplineCurve
0031 {
0032 public:
0033   DEFINE_STANDARD_ALLOC
0034
0035   //! Initialize the algorithm
0036   //! - Parameterisation is used to convert
0037   Standard_EXPORT GeomConvert_CompCurveToBSplineCurve(
0038     const Convert_ParameterisationType Parameterisation = Convert_TgtThetaOver2);
0039
0040   //! Initialize the algorithm with one curve
0041   //! - Parameterisation is used to convert
0042   Standard_EXPORT GeomConvert_CompCurveToBSplineCurve(
0043     const occ::handle<Geom_BoundedCurve>& BasisCurve,
0044     const Convert_ParameterisationType    Parameterisation = Convert_TgtThetaOver2);
0045
0046   //! Append a curve in the BSpline Return False if the
0047   //! curve is not G0 with the BSplineCurve. Tolerance
0048   //! is used to check continuity and decrease
0049   //! Multiplicity at the common Knot until MinM
0050   //! if MinM = 0, the common Knot can be removed
0051   //!
0052   //! WithRatio defines whether the resulting curve should have a uniform
0053   //! parameterization. Setting WithRatio to false may greatly
0054   //! decrease the speed of algorithms like CPnts_AbscissaPoint::AdvPerform
0055   //! when applied to the resulting curve.
0056   Standard_EXPORT bool Add(const occ::handle<Geom_BoundedCurve>& NewCurve,
0057                            const double                          Tolerance,
0058                            const bool                            After     = false,
0059                            const bool                            WithRatio = true,
0060                            const int                             MinM      = 0);
0061
0062   Standard_EXPORT occ::handle<Geom_BSplineCurve> BSplineCurve() const;
0063
0064   //! Clear a result curve
0065   Standard_EXPORT void Clear();
0066
0067 private:
0068   //! Concat two BSplineCurves.
0069   Standard_EXPORT void Add(occ::handle<Geom_BSplineCurve>& FirstCurve,
0070                            occ::handle<Geom_BSplineCurve>& SecondCurve,
0071                            const bool                      After,
0072                            const bool                      WithRatio,
0073                            const int                       MinM);
0074
0075   occ::handle<Geom_BSplineCurve> myCurve;
0076   double                         myTol;
0077   Convert_ParameterisationType   myType;
0078 };
0079
0080 #endif // _GeomConvert_CompCurveToBSplineCurve_HeaderFile