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 // Created on: 1992-10-13
 // Created by: Laurent BUCHARD
 // Copyright (c) 1992-1999 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 _IntCurve_ProjectOnPConicTool_HeaderFile
 #define _IntCurve_ProjectOnPConicTool_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 
 class IntCurve_PConic;
 class gp_Pnt2d;
 
 //! This class provides a tool which computes the parameter
 //! of a point near a parametric conic.
 class IntCurve_ProjectOnPConicTool
 {
 public:
   DEFINE_STANDARD_ALLOC
 
   //! Returns the parameter V of the point on the
   //! parametric curve corresponding to the Point Pnt. The
   //! Correspondence between Pnt and the point P(V) on the
   //! parametric curve must be coherent with the way of
   //! determination of the signed distance between a point and
   //! the implicit curve. Tol is the tolerance on the distance
   //! between a point and the parametrised curve. In that case,
   //! no bounds are given. The research of the right parameter
   //! has to be made on the natural parametric domain of the
   //! curve.
   Standard_EXPORT static double FindParameter(const IntCurve_PConic& C,
                                               const gp_Pnt2d&        Pnt,
                                               const double           Tol);
 
   //! Returns the parameter V of the point on the
   //! parametric curve corresponding to the Point Pnt. The
   //! Correspondence between Pnt and the point P(V) on the
   //! parametric curve must be coherent with the way of
   //! determination of the signed distance between a point and
   //! the implicit curve. Tol is the tolerance on the distance
   //! between a point and the parametrised curve. LowParameter
   //! and HighParameter give the boundaries of the interval in
   //! which the parameter certainly lies. These parameters are
   //! given to implement a more efficient algorithm. So, it is
   //! not necessary to check that the returned value verifies
   //! LowParameter <= Value <= HighParameter.
   Standard_EXPORT static double FindParameter(const IntCurve_PConic& C,
                                               const gp_Pnt2d&        Pnt,
                                               const double           LowParameter,
                                               const double           HighParameter,
                                               const double           Tol);
 };
 
 #endif // _IntCurve_ProjectOnPConicTool_HeaderFile

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