// Created on: 1997-10-29
// Created by: Roman BORISOV
// Copyright (c) 1997-1999 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 _FEmTool_Assembly_HeaderFile
#define _FEmTool_Assembly_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <TColStd_Array2OfInteger.hxx>
#include <FEmTool_HAssemblyTable.hxx>
#include <Standard_Boolean.hxx>
#include <math_Vector.hxx>
#include <FEmTool_SeqOfLinConstr.hxx>
#include <TColStd_SequenceOfReal.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Real.hxx>
class FEmTool_ProfileMatrix;
class math_Matrix;


//! Assemble and solve system from (one dimensional) Finite Elements
class FEmTool_Assembly 
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT FEmTool_Assembly(const TColStd_Array2OfInteger& Dependence, const Handle(FEmTool_HAssemblyTable)& Table);
  
  //! Nullify all Matrix 's Coefficient
  Standard_EXPORT void NullifyMatrix();
  
  //! Add an elementary Matrix in the assembly Matrix
  //! if  Dependence(Dimension1,Dimension2)  is  False
  Standard_EXPORT void AddMatrix (const Standard_Integer Element, const Standard_Integer Dimension1, const Standard_Integer Dimension2, const math_Matrix& Mat);
  
  //! Nullify  all  Coordinate of  assembly  Vector (second member)
  Standard_EXPORT void NullifyVector();
  
  //! Add an elementary Vector in the assembly Vector (second member)
  Standard_EXPORT void AddVector (const Standard_Integer Element, const Standard_Integer Dimension, const math_Vector& Vec);
  
  //! Delete all Constraints.
  Standard_EXPORT void ResetConstraint();
  
  //! Nullify all Constraints.
  Standard_EXPORT void NullifyConstraint();
  
  Standard_EXPORT void AddConstraint (const Standard_Integer IndexofConstraint, const Standard_Integer Element, const Standard_Integer Dimension, const math_Vector& LinearForm, const Standard_Real Value);
  
  //! Solve the assembly system
  //! Returns Standard_False if the computation failed.
  Standard_EXPORT Standard_Boolean Solve();
  
  Standard_EXPORT void Solution (math_Vector& Solution) const;
  
  Standard_EXPORT Standard_Integer NbGlobVar() const;
  
  Standard_EXPORT void GetAssemblyTable (Handle(FEmTool_HAssemblyTable)& AssTable) const;




protected:





private:



  TColStd_Array2OfInteger myDepTable;
  Handle(FEmTool_HAssemblyTable) myRefTable;
  Standard_Boolean IsSolved;
  Handle(FEmTool_ProfileMatrix) H;
  math_Vector B;
  Handle(FEmTool_ProfileMatrix) GHGt;
  FEmTool_SeqOfLinConstr G;
  TColStd_SequenceOfReal C;


};







#endif // _FEmTool_Assembly_HeaderFile