OCCT

// Created on: 1997-04-29
// Created by: Stagiaire Francois DUMONT
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile
#define _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Convert_ParameterisationType.hxx>
class Geom2d_BSplineCurve;
class Geom2d_BoundedCurve;

//! This algorithm converts and concat several curve in an BSplineCurve
class Geom2dConvert_CompCurveToBSplineCurve
{
public:
  DEFINE_STANDARD_ALLOC

  //! Initialize the algorithm
  //! - Parameterisation is used to convert
  Standard_EXPORT Geom2dConvert_CompCurveToBSplineCurve(
    const Convert_ParameterisationType Parameterisation = Convert_TgtThetaOver2);

  //! Initialize the algorithm with one curve
  //! - Parameterisation is used to convert
  Standard_EXPORT Geom2dConvert_CompCurveToBSplineCurve(
    const occ::handle<Geom2d_BoundedCurve>& BasisCurve,
    const Convert_ParameterisationType      Parameterisation = Convert_TgtThetaOver2);

  //! Append a curve in the BSpline
  //! Return False if the curve is not G0 with the BSplineCurve.
  //! Tolerance is used to check continuity and decrease
  //! Multiplicity at the common Knot
  //! After is useful if BasisCurve is a closed curve .
  Standard_EXPORT bool Add(const occ::handle<Geom2d_BoundedCurve>& NewCurve,
                           const double                            Tolerance,
                           const bool                              After = false);

  Standard_EXPORT occ::handle<Geom2d_BSplineCurve> BSplineCurve() const;

  //! Clear result curve
  Standard_EXPORT void Clear();

private:
  //! Concat two BSplineCurves.
  Standard_EXPORT void Add(occ::handle<Geom2d_BSplineCurve>& FirstCurve,
                           occ::handle<Geom2d_BSplineCurve>& SecondCurve,
                           const bool                        After);

  occ::handle<Geom2d_BSplineCurve> myCurve;
  double                           myTol;
  Convert_ParameterisationType     myType;
};

#endif // _Geom2dConvert_CompCurveToBSplineCurve_HeaderFile