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 // Created on: 1995-02-03
 // Created by: Laurent BOURESCHE
 // Copyright (c) 1995-1999 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 _Law_Interpol_HeaderFile
 #define _Law_Interpol_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <Law_BSpFunc.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
 
 class Law_Interpol;
 DEFINE_STANDARD_HANDLE(Law_Interpol, Law_BSpFunc)
 
 //! Provides an evolution law that interpolates a set
 //! of parameter and value pairs (wi, radi)
 class Law_Interpol : public Law_BSpFunc
 {
 
 public:
   //! Constructs an empty interpolative evolution law.
   //! The function Set is used to define the law.
   Standard_EXPORT Law_Interpol();
 
   //! Defines this evolution law by interpolating the set of 2D
   //! points ParAndRad. The Y coordinate of a point of
   //! ParAndRad is the value of the function at the parameter
   //! point given by its X coordinate.
   //! If Periodic is true, this function is assumed to be periodic.
   //! Warning
   //! -   The X coordinates of points in the table ParAndRad
   //! must be given in ascendant order.
   //! -   If Periodic is true, the first and last Y coordinates of
   //! points in the table ParAndRad are assumed to be
   //! equal. In addition, with the second syntax, Dd and Df
   //! are also assumed to be equal. If this is not the case,
   //! Set uses the first value(s) as last value(s).
   Standard_EXPORT void Set(const TColgp_Array1OfPnt2d& ParAndRad,
                            const Standard_Boolean      Periodic = Standard_False);
 
   Standard_EXPORT void SetInRelative(const TColgp_Array1OfPnt2d& ParAndRad,
                                      const Standard_Real         Ud,
                                      const Standard_Real         Uf,
                                      const Standard_Boolean      Periodic = Standard_False);
 
   //! Defines this evolution law by interpolating the set of 2D
   //! points ParAndRad. The Y coordinate of a point of
   //! ParAndRad is the value of the function at the parameter
   //! point given by its X coordinate.
   //! If Periodic is true, this function is assumed to be periodic.
   //! In the second syntax, Dd and Df define the values of
   //! the first derivative of the function at its first and last points.
   //! Warning
   //! -   The X coordinates of points in the table ParAndRad
   //! must be given in ascendant order.
   //! -   If Periodic is true, the first and last Y coordinates of
   //! points in the table ParAndRad are assumed to be
   //! equal. In addition, with the second syntax, Dd and Df
   //! are also assumed to be equal. If this is not the case,
   //! Set uses the first value(s) as last value(s).
   Standard_EXPORT void Set(const TColgp_Array1OfPnt2d& ParAndRad,
                            const Standard_Real         Dd,
                            const Standard_Real         Df,
                            const Standard_Boolean      Periodic = Standard_False);
 
   Standard_EXPORT void SetInRelative(const TColgp_Array1OfPnt2d& ParAndRad,
                                      const Standard_Real         Ud,
                                      const Standard_Real         Uf,
                                      const Standard_Real         Dd,
                                      const Standard_Real         Df,
                                      const Standard_Boolean      Periodic = Standard_False);
 
   DEFINE_STANDARD_RTTIEXT(Law_Interpol, Law_BSpFunc)
 
 protected:
 private:
 };
 
 #endif // _Law_Interpol_HeaderFile

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