EvaluationPatchArea.hpp

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/*
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   Copyright (C) 2004, 2005, 2007 EPFL, Politecnico di Milano, INRIA
   Copyright (C) 2010 EPFL, Politecnico di Milano, Emory UNiversity

   This file is part of the LifeV library

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   it under the terms of the GNU Lesser General Public License as published by
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   Lesser General Public License for more details.

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   License along with this library; if not, see <http://www.gnu.org/licenses/>


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/*!
 *   @file
     @brief This file contains the definition of the EvaluationInterpolateValue class.

     @date 06/2011
     @author Samuel Quinodoz <samuel.quinodoz@epfl.ch>
 */

#ifndef EVALUATION_PATCHAREA_HPP
#define EVALUATION_PATCHAREA_HPP

#include <lifev/core/LifeV.hpp>

#include <lifev/core/array/VectorEpetra.hpp>
#include <lifev/core/array/VectorSmall.hpp>

#include <lifev/eta/fem/ETCurrentFE.hpp>
#include <lifev/eta/fem/ETCurrentFlag.hpp>
#include <lifev/eta/fem/ETFESpace.hpp>
#include <lifev/core/fem/QuadratureRule.hpp>

#include <lifev/eta/expression/ExpressionInterpolateValue.hpp>

#include <boost/shared_ptr.hpp>


namespace LifeV
{

namespace ExpressionAssembly
{

//! Evaluation for the interpolation of a FE function
/*!
  @author Samuel Quinodoz <samuel.quinodoz@epfl.ch>

  This class aims at representing an interpolated FE value.

  This is the generic implementation, so representing a vectorial FE

  This class is an Evaluation class, and therefore, has all the methods
  required to work within the Evaluation trees.
 */
template<typename MeshType, typename MapType, UInt SpaceDim, UInt FieldDim>
class EvaluationPatchArea
{
public:

    //! @name Public Types
    //@{

    //! Type of the value returned by this class
    typedef VectorSmall<FieldDim>   return_Type;
    typedef ETFESpace<MeshType, MapType, SpaceDim, FieldDim> ETFESpace_Type;
    typedef boost::shared_ptr<ETFESpace_Type>                ETFESpacePtr_Type;
    //@}


    //! @name Static constants
    //@{

    //! Flag for the global current FE
    const static flag_Type S_globalUpdateFlag;

    //! Flag for the test current FE
    const static flag_Type S_testUpdateFlag;

    //! Flag for the solution current FE
    const static flag_Type S_solutionUpdateFlag;

    //@}


    //! @name Constructors, destructor
    //@{

    //! Copy constructor
    EvaluationPatchArea (const EvaluationPatchArea& evaluation)
        :
        M_fespace ( evaluation.M_fespace),
        M_quadrature (0),
        //M_currentFE(M_fespace->refFE(),M_fespace->geoMap()),
        M_currentFE (evaluation.M_currentFE),
        M_patchArea (evaluation.M_patchArea)
    {
        if (evaluation.M_quadrature != 0)
        {
            M_quadrature = new QuadratureRule (* (evaluation.M_quadrature) );
            //M_currentFE.setQuadratureRule(*(evaluation.M_quadrature));
        }
    }

    //! Expression-based constructor
    explicit EvaluationPatchArea (const ExpressionPatchArea<MeshType, MapType, SpaceDim, FieldDim>& expression)
        :
        M_fespace ( expression.fespace() ),
        M_quadrature (0),
        M_currentFE (M_fespace->refFE(), M_fespace->geoMap() ),
        M_patchArea (0)
    {}

    //! Destructor
    ~EvaluationPatchArea()
    {
        if (M_quadrature != 0)
        {
            delete M_quadrature;
        }
    }

    //@}


    //! @name Methods
    //@{

    //! Interal update, computes the interpolated values.
    void update (const UInt& iElement)
    {
        zero();

        M_currentFE.update (M_fespace->mesh()->element (iElement), ET_UPDATE_DPHI | ET_UPDATE_WDET );

        std::cout << "Measure! "<< M_currentFE.measure() << std::endl;
        int n;
        std::cin >> n;

        for (UInt q (0); q < M_quadrature->nbQuadPt(); ++q)
        {
            for (UInt iDim (0); iDim < FieldDim; ++iDim)
            {
                M_patchArea[q][iDim] += M_currentFE.measure();
            }
        }
    }


    //! Erase all the interpolated values stored internally
    void zero()
    {
        for (UInt q (0); q < M_quadrature->nbQuadPt(); ++q)
        {
            for (UInt iDim (0); iDim < FieldDim; ++iDim)
            {
                M_patchArea[q][iDim] = 0.0;
            }
        }
    }

    //! Show the values interpolated
    void showValues() const
    {
        std::cout << " Values : " << std::endl;

        for (UInt i (0); i < M_quadrature->nbQuadPt(); ++i)
        {
            std::cout << M_patchArea[i] << std::endl;
        }
    }

    //! Display method
    static void display (std::ostream& out = std::cout)
    {
        out << "patchAread" << "\n";
    }

    //@}


    //! @name Set Methods
    //@{

    //! Do nothing setter for the global current FE
    template< typename CFEType >
    void setGlobalCFE (const CFEType* /*globalCFE*/)
    {}

    //! Do nothing setter for the test current FE
    template< typename CFEType >
    void setTestCFE (const CFEType* /*testCFE*/)
    {}

    //! Do nothing setter for the solution current FE
    template< typename CFEType >
    void setSolutionCFE (const CFEType* /*solutionCFE*/)
    {}

    //! Setter for the quadrature rule (deep copy)
    void setQuadrature (const QuadratureRule& qr)
    {
        if (M_quadrature != 0)
        {
            delete M_quadrature;
        }
        M_quadrature = new QuadratureRule (qr);
        M_currentFE.setQuadratureRule (qr);
        M_patchArea.resize (qr.nbQuadPt() );
    }

    //@}


    //! @name Get Methods
    //@{

    //! Getter for a value
    return_Type value_q (const UInt& q) const
    {
        return M_patchArea[q];
    }

    //! Getter for the value for a vector
    return_Type value_qi (const UInt& q, const UInt& /*i*/) const
    {
        return M_patchArea[q];
    }

    //! Getter for the value for a matrix
    return_Type value_qij (const UInt& q, const UInt& /*i*/, const UInt& /*j*/) const
    {
        return M_patchArea[q];
    }

    //@}

private:

    //! @name Private Methods
    //@{

    //! No empty constructor
    EvaluationPatchArea();

    //@}

    ETFESpacePtr_Type M_fespace;

    QuadratureRule* M_quadrature;
    ETCurrentFE<SpaceDim, 1> M_currentFE;

    std::vector<return_Type> M_patchArea;
};


template<typename MeshType, typename MapType, UInt SpaceDim, UInt FieldDim>
const flag_Type
EvaluationPatchArea<MeshType, MapType, SpaceDim, FieldDim>::
S_globalUpdateFlag = ET_UPDATE_NONE;

template<typename MeshType, typename MapType, UInt SpaceDim, UInt FieldDim>
const flag_Type
EvaluationPatchArea<MeshType, MapType, SpaceDim, FieldDim>::
S_testUpdateFlag = ET_UPDATE_NONE;

template<typename MeshType, typename MapType, UInt SpaceDim, UInt FieldDim>
const flag_Type
EvaluationPatchArea<MeshType, MapType, SpaceDim, FieldDim>::
S_solutionUpdateFlag = ET_UPDATE_NONE;

} // Namespace ExpressionAssembly

} // Namespace LifeV
#endif