/usr/include/dolfin/function/MultiMeshFunction.h is in libdolfin-dev 2016.2.0-2.
This file is owned by root:root, with mode 0o644.
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//
// 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: 2013-09-25
// Last changed: 2016-03-02
#ifndef __MULTI_MESH_FUNCTION_H
#define __MULTI_MESH_FUNCTION_H
#include <memory>
#include <boost/ptr_container/ptr_map.hpp>
#include <dolfin/common/Variable.h>
namespace dolfin
{
// Forward declarations
class MultiMeshFunctionSpace;
class GenericVector;
class Function;
class MultiMeshFunction;
/// This class represents a function on a cut and composite finite
/// element function space (MultiMesh) defined on one or more possibly
/// intersecting meshes.
class MultiMeshFunction : public Variable
{
public:
/// Constructor
MultiMeshFunction();
/// Create MultiMesh function on given MultiMesh function space
///
/// *Arguments*
/// V (_MultiMeshFunctionSpace_)
/// The MultiMesh function space.
explicit MultiMeshFunction(std::shared_ptr<const MultiMeshFunctionSpace> V);
/// Create MultiMesh function on given MultiMesh function space with a given vector
/// (shared data)
///
/// *Warning: This constructor is intended for internal library use only*
///
/// *Arguments*
/// V (_MultiMeshFunctionSpace_)
/// The multimesh function space.
/// x (_GenericVector_)
/// The vector.
MultiMeshFunction(std::shared_ptr<const MultiMeshFunctionSpace> V,
std::shared_ptr<GenericVector> x);
/// Destructor
virtual ~MultiMeshFunction();
/// Return function (part) number i
///
/// *Returns*
/// _Function_
/// Function (part) number i
std::shared_ptr<const Function> part(std::size_t i) const;
/// Return vector of expansion coefficients (non-const version)
///
/// *Returns*
/// _GenericVector_
/// The vector of expansion coefficients.
std::shared_ptr<GenericVector> vector();
/// Return vector of expansion coefficients (const version)
///
/// *Returns*
/// _GenericVector_
/// The vector of expansion coefficients (const).
std::shared_ptr<const GenericVector> vector() const;
/// Return shared pointer to multi mesh function space
///
/// *Returns*
/// _MultiMeshFunctionSpace_
/// Return the shared pointer.
virtual std::shared_ptr<const MultiMeshFunctionSpace> function_space() const
{
return _function_space;
}
private:
// Initialize vector
void init_vector();
// Compute ghost indices
void compute_ghost_indices(std::pair<std::size_t, std::size_t> range,
std::vector<la_index>& ghost_indices) const;
// The function space
std::shared_ptr<const MultiMeshFunctionSpace> _function_space;
// The vector of expansion coefficients (local)
std::shared_ptr<GenericVector> _vector;
// Cache of regular functions for the parts
mutable std::map<std::size_t, std::shared_ptr<const Function> > _function_parts;
};
}
#endif
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