// Created on: 1998-04-09
// Created by: Andre LIEUTIER
// Copyright (c) 1998-1999 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 _NLPlate_NLPlate_HeaderFile
#define _NLPlate_NLPlate_HeaderFile

#include "Standard.hxx"
#include "Standard_DefineAlloc.hxx"
#include "Standard_Handle.hxx"

#include "NLPlate_HGPPConstraint.hxx"
#include "NCollection_Sequence.hxx"
#include "Plate_Plate.hxx"
#include "NCollection_List.hxx"
#include "Standard_Integer.hxx"
class Geom_Surface;
class NLPlate_HGPPConstraint;
class gp_XYZ;
class gp_XY;

class NLPlate_NLPlate
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT NLPlate_NLPlate(const occ::handle<Geom_Surface>& InitialSurface);

  Standard_EXPORT void Load(const occ::handle<NLPlate_HGPPConstraint>& GConst);

  Standard_EXPORT void Solve(const int ord = 2, const int InitialConsraintOrder = 1);

  Standard_EXPORT void Solve2(const int ord = 2, const int InitialConsraintOrder = 1);

  Standard_EXPORT void IncrementalSolve(const int  ord                   = 2,
                                        const int  InitialConsraintOrder = 1,
                                        const int  NbIncrements          = 4,
                                        const bool UVSliding             = false);

  //! returns True if all has been correctly done.
  Standard_EXPORT bool IsDone() const;

  Standard_EXPORT void destroy();

  ~NLPlate_NLPlate() { destroy(); }

  //! reset the Plate in the initial state
  //! ( same as after Create((Surface))
  Standard_EXPORT void Init();

  Standard_EXPORT gp_XYZ Evaluate(const gp_XY& point2d) const;

  Standard_EXPORT gp_XYZ EvaluateDerivative(const gp_XY& point2d, const int iu, const int iv) const;

  Standard_EXPORT int Continuity() const;

  Standard_EXPORT void ConstraintsSliding(const int NbIterations = 3);

  Standard_EXPORT int MaxActiveConstraintOrder() const;

private:
  Standard_EXPORT bool Iterate(const int    ConstraintOrder,
                               const int    ResolutionOrder,
                               const double IncrementalLoading = 1.0);

  occ::handle<Geom_Surface>                                 myInitialSurface;
  NCollection_Sequence<occ::handle<NLPlate_HGPPConstraint>> myHGPPConstraints;
  NCollection_List<Plate_Plate>                             mySOP;
  bool                                                      OK;
};

#endif // _NLPlate_NLPlate_HeaderFile