// 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_SequenceOfHGPPConstraint.hxx>
#include <NLPlate_StackOfPlate.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 Handle(Geom_Surface)& InitialSurface);

  Standard_EXPORT void Load(const Handle(NLPlate_HGPPConstraint)& GConst);

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

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

  Standard_EXPORT void IncrementalSolve(const Standard_Integer ord                   = 2,
                                        const Standard_Integer InitialConsraintOrder = 1,
                                        const Standard_Integer NbIncrements          = 4,
                                        const Standard_Boolean UVSliding = Standard_False);

  //! returns True if all has been correctly done.
  Standard_EXPORT Standard_Boolean 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 Standard_Integer iu,
                                            const Standard_Integer iv) const;

  Standard_EXPORT Standard_Integer Continuity() const;

  Standard_EXPORT void ConstraintsSliding(const Standard_Integer NbIterations = 3);

  Standard_EXPORT Standard_Integer MaxActiveConstraintOrder() const;

protected:
private:
  Standard_EXPORT Standard_Boolean Iterate(const Standard_Integer ConstraintOrder,
                                           const Standard_Integer ResolutionOrder,
                                           const Standard_Real    IncrementalLoading = 1.0);

  Handle(Geom_Surface)             myInitialSurface;
  NLPlate_SequenceOfHGPPConstraint myHGPPConstraints;
  NLPlate_StackOfPlate             mySOP;
  Standard_Boolean                 OK;
};

#endif // _NLPlate_NLPlate_HeaderFile
