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 algorithme
0036   //! - Parameterisation is used to convert
0037   Standard_EXPORT GeomConvert_CompCurveToBSplineCurve(
0038     const Convert_ParameterisationType Parameterisation = Convert_TgtThetaOver2);
0039
0040   //! Initialize the algorithme with one curve
0041   //! - Parameterisation is used to convert
0042   Standard_EXPORT GeomConvert_CompCurveToBSplineCurve(
0043     const 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 Standard_False may greatly
0054   //! decrease the speed of algorithms like CPnts_AbscissaPoint::AdvPerform
0055   //! when applied to the resulting curve.
0056   Standard_EXPORT Standard_Boolean Add(const Handle(Geom_BoundedCurve)& NewCurve,
0057                                        const Standard_Real              Tolerance,
0058                                        const Standard_Boolean           After     = Standard_False,
0059                                        const Standard_Boolean           WithRatio = Standard_True,
0060                                        const Standard_Integer           MinM      = 0);
0061
0062   Standard_EXPORT Handle(Geom_BSplineCurve) BSplineCurve() const;
0063
0064   //! Clear a result curve
0065   Standard_EXPORT void Clear();
0066
0067 protected:
0068 private:
0069   //! Concat two BSplineCurves.
0070   Standard_EXPORT void Add(Handle(Geom_BSplineCurve)& FirstCurve,
0071                            Handle(Geom_BSplineCurve)& SecondCurve,
0072                            const Standard_Boolean     After,
0073                            const Standard_Boolean     WithRatio,
0074                            const Standard_Integer     MinM);
0075
0076   Handle(Geom_BSplineCurve)    myCurve;
0077   Standard_Real                myTol;
0078   Convert_ParameterisationType myType;
0079 };
0080
0081 #endif // _GeomConvert_CompCurveToBSplineCurve_HeaderFile