mirror of
https://github.com/OPM/opm-simulators.git
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127 lines
3.8 KiB
C++
127 lines
3.8 KiB
C++
// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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// vi: set et ts=4 sw=4 sts=4:
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/*
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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Consult the COPYING file in the top-level source directory of this
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module for the precise wording of the license and the list of
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copyright holders.
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*/
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/*!
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* \file
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* \copydoc Opm::VtkScalarFunction
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*/
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#ifndef VTK_SCALAR_FUNCTION_HH
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#define VTK_SCALAR_FUNCTION_HH
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#include <opm/models/io/baseoutputwriter.hh>
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#include <dune/grid/io/file/vtk/function.hh>
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#include <dune/istl/bvector.hh>
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#include <dune/common/fvector.hh>
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#include <dune/common/version.hh>
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#include <opm/material/common/Unused.hpp>
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#include <opm/material/common/Exceptions.hpp>
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#include <string>
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#include <limits>
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#include <vector>
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namespace Opm {
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/*!
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* \brief Provides a vector-valued function using Dune::FieldVectors
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* as elements.
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*/
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template <class GridView, class Mapper>
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class VtkScalarFunction : public Dune::VTKFunction<GridView>
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{
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enum { dim = GridView::dimension };
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using ctype = typename GridView::ctype;
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using Element = typename GridView::template Codim<0>::Entity;
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using ScalarBuffer = BaseOutputWriter::ScalarBuffer;
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public:
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VtkScalarFunction(std::string name,
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const GridView& gridView,
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const Mapper& mapper,
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const ScalarBuffer& buf,
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unsigned codim)
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: name_(name)
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, gridView_(gridView)
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, mapper_(mapper)
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, buf_(buf)
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, codim_(codim)
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{ assert(int(buf_.size()) == int(mapper_.size())); }
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virtual std::string name() const
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{ return name_; }
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virtual int ncomps() const
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{ return 1; }
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virtual double evaluate(int,
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const Element& e,
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const Dune::FieldVector<ctype, dim>& xi) const
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{
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unsigned idx;
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if (codim_ == 0) {
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// cells. map element to the index
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idx = static_cast<unsigned>(mapper_.index(e));
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}
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else if (codim_ == dim) {
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// find vertex which is closest to xi in local
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// coordinates. This code is based on Dune::P1VTKFunction
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double min = 1e100;
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int imin = -1;
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Dune::GeometryType gt = e.type();
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int n = static_cast<int>(e.subEntities(dim));
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for (int i = 0; i < n; ++i) {
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Dune::FieldVector<ctype, dim> local =
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Dune::ReferenceElements<ctype, dim>::general(gt).position(i, dim);
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local -= xi;
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if (local.infinity_norm() < min) {
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min = local.infinity_norm();
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imin = static_cast<int>(i);
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}
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}
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// map vertex to an index
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idx = static_cast<unsigned>(mapper_.subIndex(e, imin, codim_));
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}
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else
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throw std::logic_error("Only element and vertex based vector fields are"
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" supported so far.");
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return static_cast<double>(static_cast<float>(buf_[idx]));
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}
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private:
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const std::string name_;
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const GridView gridView_;
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const Mapper& mapper_;
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const ScalarBuffer& buf_;
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unsigned codim_;
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};
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} // namespace Opm
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#endif
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