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 // Created on: 1994-06-02
 // Created by: Christian CAILLET
 // Copyright (c) 1994-1999 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 _IGESSelect_SplineToBSpline_HeaderFile
 #define _IGESSelect_SplineToBSpline_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <IFSelect_Transformer.hxx>
 class Interface_CopyControl;
 class Interface_Graph;
 class Interface_Protocol;
 class Interface_CheckIterator;
 class Interface_InterfaceModel;
 class Standard_Transient;
 class TCollection_AsciiString;
 
 
 class IGESSelect_SplineToBSpline;
 DEFINE_STANDARD_HANDLE(IGESSelect_SplineToBSpline, IFSelect_Transformer)
 
 //! This type of Transformer allows to convert Spline Curves (IGES
 //! type 112) and Surfaces (IGES Type 126) to BSpline Curves (IGES
 //! type 114) and Surfac (IGES Type 128). All other entities are
 //! rebuilt as identical but on the basis of this conversion.
 //!
 //! It also gives an option to, either convert as such (i.e. each
 //! starting part of the spline becomes a segment of the bspline,
 //! with continuity C0 between segments), or try to increase
 //! continuity as far as possible to C1 or to C2.
 //!
 //! It does nothing if the starting model contains no Spline
 //! Curve (IGES Type 112) or Surface (IGES Type 126). Else,
 //! converting and rebuilding implies copying of entities.
 class IGESSelect_SplineToBSpline : public IFSelect_Transformer
 {
 
 public:
 
   
   //! Creates a Transformer SplineToBSpline. If <tryC2> is True,
   //! it will in addition try to upgrade continuity up to C2.
   Standard_EXPORT IGESSelect_SplineToBSpline(const Standard_Boolean tryC2);
   
   //! Returns the option TryC2 given at creation time
   Standard_EXPORT Standard_Boolean OptionTryC2() const;
   
   //! Performs the transformation, if there is at least one Spline
   //! Curve (112) or Surface (126). Does nothing if there is none.
   Standard_EXPORT Standard_Boolean Perform (const Interface_Graph& G, const Handle(Interface_Protocol)& protocol, Interface_CheckIterator& checks, Handle(Interface_InterfaceModel)& newmod) Standard_OVERRIDE;
   
   //! Returns the transformed entities.
   //! If original data contained no Spline Curve or Surface,
   //! the result is identity : <entto> = <entfrom>
   //! Else, the copied counterpart is returned : for a Spline Curve
   //! or Surface, it is a converted BSpline Curve or Surface. Else,
   //! it is the result of general service Copy (rebuilt as necessary
   //! by BSPlines replacing Splines).
   Standard_EXPORT Standard_Boolean Updated (const Handle(Standard_Transient)& entfrom, Handle(Standard_Transient)& entto) const Standard_OVERRIDE;
   
   //! Returns a text which defines the way a Transformer works :
   //! "Conversion Spline to BSpline" and as opted,
   //! " trying to upgrade continuity"
   Standard_EXPORT TCollection_AsciiString Label() const Standard_OVERRIDE;
 
 
 
 
   DEFINE_STANDARD_RTTIEXT(IGESSelect_SplineToBSpline,IFSelect_Transformer)
 
 protected:
 
 
 
 
 private:
 
 
   Standard_Boolean thetryc2;
   Standard_Boolean thefound;
   Handle(Interface_CopyControl) themap;
 
 
 };
 
 
 
 
 
 
 
 #endif // _IGESSelect_SplineToBSpline_HeaderFile

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