/usr/include/dune/pdelab/constraints/raviartthomas0.hh is in libdune-pdelab-dev 2.5.0~20170124g7cf9f47a-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
#ifndef DUNE_PDELAB_CONSTRAINTS_RAVIARTTHOMAS0_HH
#define DUNE_PDELAB_CONSTRAINTS_RAVIARTTHOMAS0_HH
#include<dune/typetree/typetree.hh>
#include<dune/common/exceptions.hh>
#include<dune/geometry/referenceelements.hh>
#include<dune/geometry/type.hh>
#include<dune/pdelab/common/geometrywrapper.hh>
namespace Dune {
namespace PDELab {
//! Neumann Constraints construction, as needed for RT0
class RT0Constraints {
public:
enum{doBoundary=true};enum{doProcessor=false};
enum{doSkeleton=false};enum{doVolume=false};
//! boundary constraints
/**
* \tparam P Parameter class, wich fulfills the FluxConstraintsParameters interface
* \tparam IG intersection geometry
* \tparam LFS local function space
* \tparam T TransformationType
*/
template<typename P, typename IG, typename LFS, typename T>
void boundary (const P& p, const IG& ig, const LFS& lfs, T& trafo) const
{
typedef typename IG::ctype DT;
const int dim = IG::dimension;
const int face = ig.indexInInside();
const Dune::ReferenceElement<DT,dim-1> &
face_refelem = Dune::ReferenceElements<DT,dim-1>::general(ig.geometry().type());
const FieldVector<DT, dim-1> ip = face_refelem.position(0,0);
if (p.isNeumann(ig,ip)) {
typename T::RowType empty; // need not interpolate
trafo[lfs.dofIndex(face)]=empty;
}
}
};
}
}
#endif // DUNE_PDELAB_CONSTRAINTS_RAVIARTTHOMAS0_HH
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