// Copyright (c) 2025 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 _Geom2dGridEval_HeaderFile
#define _Geom2dGridEval_HeaderFile

#include "gp_Pnt2d.hxx"
#include "gp_Vec2d.hxx"
#include "NCollection_Array1.hxx"

//! @brief Namespace containing result structures for 2D curve grid evaluators.
//!
//! Provides lightweight POD structures for returning evaluation results
//! with derivatives from 2D curve grid evaluators.
namespace Geom2dGridEval
{

//! Result structure for curve D1 evaluation (point and first derivative).
struct CurveD1
{
  gp_Pnt2d Point;
  gp_Vec2d D1;
};

//! Result structure for curve D2 evaluation (point and first two derivatives).
struct CurveD2
{
  gp_Pnt2d Point;
  gp_Vec2d D1;
  gp_Vec2d D2;
};

//! Result structure for curve D3 evaluation (point and first three derivatives).
struct CurveD3
{
  gp_Pnt2d Point;
  gp_Vec2d D1;
  gp_Vec2d D2;
  gp_Vec2d D3;
};

} // namespace Geom2dGridEval

#endif // _Geom2dGridEval_HeaderFile