dune-localfunctions  2.5.0
rannachertureklocalinterpolation.hh
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1 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=4 sw=2 sts=2:
3 #ifndef DUNE_RANNACHER_TUREK_LOCALINTERPOLATION_HH
4 #define DUNE_RANNACHER_TUREK_LOCALINTERPOLATION_HH
5 
6 #include <cassert>
7 #include <vector>
8 
9 #include <dune/common/fvector.hh>
10 
11 #include <dune/geometry/referenceelements.hh>
12 
14 
15 namespace Dune
16 {
17 
25  template< class D, class R, unsigned int d >
27  {
29  R, 1, FieldVector< R, 1 >,
30  FieldMatrix< R, 1, d > > Traits;
31 
32  public:
33  template< class F, class C >
34  void interpolate ( const F &f, std::vector< C > &out ) const
35  {
36  typedef typename Traits::DomainType DomainType;
37  typedef typename Traits::RangeType RangeType;
38 
39  // get cubic reference element
40  const ReferenceElement< D, d > &referenceElement = ReferenceElements< D, d >::cube();
41 
42  const int size = 2*d;
43  assert( size == referenceElement.size( 1 ) );
44 
45  // resize vector
46  out.resize( size );
47 
48  // evaluate local function in barycenter of codim 1 subentities
49  for( int i = 0; i < size; ++i )
50  {
51  const DomainType &x = referenceElement.position( i, 1 );
52  RangeType y;
53  f.evaluate( x, y );
54  out[ i ] = y;
55  }
56  }
57 
58  };
59 
60 } // namespace Dune
61 
62 #endif // #ifndef DUNE_RANNACHER_TUREK_LOCALINTERPOLATION_HH
please doc me
Definition: rannachertureklocalinterpolation.hh:26
R RangeType
range type
Definition: localbasis.hh:61
Definition: brezzidouglasmarini1cube2dlocalbasis.hh:15
D DomainType
domain type
Definition: localbasis.hh:49
void interpolate(const F &f, std::vector< C > &out) const
Definition: rannachertureklocalinterpolation.hh:34
Type traits for LocalBasisVirtualInterface.
Definition: localbasis.hh:37