VelocityInterpolation.hpp

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/*
  Copyright 2012 SINTEF ICT, Applied Mathematics.

  This file is part of the Open Porous Media project (OPM).

  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef OPM_VELOCITYINTERPOLATION_HEADER_INCLUDED
#define OPM_VELOCITYINTERPOLATION_HEADER_INCLUDED

#include <opm/core/utility/WachspressCoord.hpp>
#include <vector>

struct UnstructuredGrid;

namespace Opm
{

    class VelocityInterpolationInterface
    {
    public:
        virtual ~VelocityInterpolationInterface();

        virtual void setupFluxes(const double* flux) = 0;

        virtual void interpolate(const int cell,
                                 const double* x,
                                 double* v) const = 0;
    };




    class VelocityInterpolationConstant : public VelocityInterpolationInterface
    {
    public:
        explicit VelocityInterpolationConstant(const UnstructuredGrid& grid);

        virtual void setupFluxes(const double* flux);

        virtual void interpolate(const int cell,
                                 const double* x,
                                 double* v) const;
    private:
        const UnstructuredGrid& grid_;
        const double* flux_;
    };





    class VelocityInterpolationECVI : public VelocityInterpolationInterface
    {
    public:
        explicit VelocityInterpolationECVI(const UnstructuredGrid& grid);

        virtual void setupFluxes(const double* flux);

        virtual void interpolate(const int cell,
                                 const double* x,
                                 double* v) const;
    private:
        WachspressCoord bcmethod_;
        const UnstructuredGrid& grid_;
        mutable std::vector<double> bary_coord_;
        std::vector<double> corner_velocity_; // size = dim * #corners
    };




} // namespace Opm

#endif // OPM_VELOCITYINTERPOLATION_HEADER_INCLUDED