/usr/include/dolfin/mesh/MeshDomains.h is in libdolfin-dev 1.4.0+dfsg-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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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/>.
//
// Modified by Garth N. Wells, 2012
//
// First added: 2011-08-29
// Last changed: 2012-04-03
#ifndef __MESH_DOMAINS_H
#define __MESH_DOMAINS_H
#include <map>
#include <vector>
namespace dolfin
{
/// The class _MeshDomains_ stores the division of a _Mesh_ into
/// subdomains. For each topological dimension 0 <= d <= D, where D
/// is the topological dimension of the _Mesh_, a set of integer
/// markers are stored for a subset of the entities of dimension d,
/// indicating for each entity in the subset the number of the
/// subdomain. It should be noted that the subset does not need to
/// contain all entities of any given dimension; entities not
/// contained in the subset are "unmarked".
class MeshDomains
{
public:
/// Create empty mesh domains
MeshDomains();
/// Destructor
~MeshDomains();
/// Return maximum topological dimension of stored markers
std::size_t max_dim() const;
/// Return number of marked entities of given dimension
std::size_t num_marked(std::size_t dim) const;
/// Check whether domain data is empty
bool is_empty() const;
/// Get subdomain markers for given dimension (shared pointer
/// version)
std::map<std::size_t, std::size_t>& markers(std::size_t dim);
/// Get subdomain markers for given dimension (const shared
/// pointer version)
const std::map<std::size_t, std::size_t>& markers(std::size_t dim) const;
/// Set marker (entity index, marker value) of a given dimension
/// d. Returns true if a new key is inserted, false otherwise.
bool set_marker(std::pair<std::size_t, std::size_t> marker,
std::size_t dim);
/// Get marker (entity index, marker value) of a given dimension
/// d. Throws an error if marker does not exist.
std::size_t get_marker(std::size_t entity_index, std::size_t dim) const;
/// Assignment operator
const MeshDomains& operator= (const MeshDomains& domains);
/// Initialize mesh domains for given topological dimension
void init(std::size_t dim);
/// Clear all data
void clear();
private:
// Subdomain markers for each geometric dimension
std::vector<std::map<std::size_t, std::size_t> > _markers;
};
}
#endif
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