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BasisFunction.h
// Copyright (C) 2013 Anders Logg
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// First added: 2009-01-01
// Last changed: 2013-03-04
#ifndef __BASIS_FUNCTION_H
#define __BASIS_FUNCTION_H
#include <memory>
#include <vector>
#include <ufc.h>
#include <dolfin/fem/FiniteElement.h>
namespace dolfin
{
class BasisFunction : public ufc::function
{
public:
BasisFunction(std::size_t index,
std::shared_ptr<const FiniteElement> element,
const std::vector<double>& coordinate_dofs)
: _index(index), _element(element), _coordinate_dofs(coordinate_dofs) {}
~BasisFunction() {}
void update_index(std::size_t index)
{ _index = index; }
void eval(double* values, const double* x) const
{
// Note: assuming cell_orientation = 0
dolfin_assert(_element);
_element->evaluate_basis(_index, values, x, _coordinate_dofs.data(), 0);
}
void eval_derivatives(double* values, const double* x, std::size_t n) const
{
// Note: assuming cell_orientation = 0
dolfin_assert(_element);
_element->evaluate_basis_derivatives(_index, n, values, x,
_coordinate_dofs.data(), 0);
}
//--- Implementation of ufc::function interface ---
void evaluate(double* values, const double* coordinates,
const ufc::cell& cell) const
{ eval(values, coordinates); }
private:
// The index
std::size_t _index;
// The finite element
std::shared_ptr<const FiniteElement> _element;
// Cell coordinates
const std::vector<double> _coordinate_dofs;
};
}
#endif
dolfin::BasisFunction::BasisFunction
BasisFunction(std::size_t index, std::shared_ptr< const FiniteElement > element, const std::vector< double > &coordinate_dofs)
Definition BasisFunction.h:57
dolfin::BasisFunction::eval
void eval(double *values, const double *x) const
Definition BasisFunction.h:78
dolfin::BasisFunction::eval_derivatives
void eval_derivatives(double *values, const double *x, std::size_t n) const
Definition BasisFunction.h:93
dolfin::BasisFunction::update_index
void update_index(std::size_t index)
Definition BasisFunction.h:69
dolfin::BasisFunction::~BasisFunction
~BasisFunction()
Destructor.
Definition BasisFunction.h:63
dolfin::BasisFunction::evaluate
void evaluate(double *values, const double *coordinates, const ufc::cell &cell) const
Definition BasisFunction.h:111
dolfin
Definition adapt.h:30