/usr/include/dune/localfunctions/lagrange/p23d/p23dlocalinterpolation.hh is in libdune-localfunctions-dev 2.2.1-2.
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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 49 50 51 52 53 54 55 56 57 58 59 60 61 | // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set ts=4 sw=2 et sts=2:
#ifndef DUNE_P2_3DLOCALINTERPOLATION_HH
#define DUNE_P2_3DLOCALINTERPOLATION_HH
#include <vector>
namespace Dune
{
template<class LB>
class P23DLocalInterpolation
{
public:
//! \brief Local interpolation of a function
template<typename F, typename C>
void interpolate (const F& f, std::vector<C>& out) const
{
typename LB::Traits::RangeType y;
out.resize(10);
typename LB::Traits::DomainType x;
x[0] = 0.0; x[1] = 0.0; x[2] = 0.0;
f.evaluate(x,y); out[0] = y;
x[0] = 1.0; x[1] = 0.0; x[2] = 0.0;
f.evaluate(x,y); out[1] = y;
x[0] = 0.0; x[1] = 1.0; x[2] = 0.0;
f.evaluate(x,y); out[2] = y;
x[0] = 0.0; x[1] = 0.0; x[2] = 1.0;
f.evaluate(x,y); out[3] = y;
x[0] = 0.5; x[1] = 0.0; x[2] = 0.0;
f.evaluate(x,y); out[4] = y;
x[0] = 0.5; x[1] = 0.5; x[2] = 0.0;
f.evaluate(x,y); out[5] = y;
x[0] = 0.0; x[1] = 0.5; x[2] = 0.0;
f.evaluate(x,y); out[6] = y;
x[0] = 0.0; x[1] = 0.0; x[2] = 0.5;
f.evaluate(x,y); out[7] = y;
x[0] = 0.5; x[1] = 0.0; x[2] = 0.5;
f.evaluate(x,y); out[8] = y;
x[0] = 0.0; x[1] = 0.5; x[2] = 0.5;
f.evaluate(x,y); out[9] = y;
}
private:
typename LB::Traits::DomainType x[4];
};
}
#endif
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