/usr/include/dolfin/refinement/refine.h is in libdolfin-dev 1.4.0+dfsg-4.
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/>.
//
// Modified by Anders Logg, 2010.
//
// First added: 2010-02-10
// Last changed: 2013-05-12
//
// This file defines free functions for mesh refinement.
//
#ifndef __DOLFIN_REFINE_H
#define __DOLFIN_REFINE_H
namespace dolfin
{
// Forward declarations
class Mesh;
template <typename T> class MeshFunction;
/// Create uniformly refined mesh
///
/// *Arguments*
/// mesh (_Mesh_)
/// The mesh to refine.
/// redistribute (_bool_)
/// Optional argument to redistribiute the refined mesh if mesh is a
/// distributed mesh.
///
/// *Returns*
/// _Mesh_
/// The refined mesh.
///
/// *Example*
/// .. code-block:: c++
///
/// mesh = refine(mesh);
///
Mesh refine(const Mesh& mesh, bool redistribute = true);
/// Create uniformly refined mesh
///
/// *Arguments*
/// refined_mesh (_Mesh_)
/// The mesh that will be the refined mesh.
/// mesh (_Mesh_)
/// The original mesh.
/// redistribute (_bool_)
/// Optional argument to redistribiute the refined mesh if mesh is a
/// distributed mesh.
void refine(Mesh& refined_mesh, const Mesh& mesh,
bool redistribute = true);
/// Create locally refined mesh
///
/// *Arguments*
/// mesh (_Mesh_)
/// The mesh to refine.
/// cell_markers (_MeshFunction_ <bool>)
/// A mesh function over booleans specifying which cells
/// that should be refined (and which should not).
/// redistribute (_bool_)
/// Optional argument to redistribiute the refined mesh if mesh is a
/// distributed mesh.
///
/// *Returns*
/// _Mesh_
/// The locally refined mesh.
///
/// *Example*
/// .. code-block:: c++
///
/// CellFunction<bool> cell_markers(mesh);
/// cell_markers.set_all(false);
/// Point origin(0.0, 0.0, 0.0);
/// for (CellIterator cell(mesh); !cell.end(); ++cell)
/// {
/// Point p = cell->midpoint();
/// if (p.distance(origin) < 0.1)
/// cell_markers[*cell] = true;
/// }
/// mesh = refine(mesh, cell_markers);
///
Mesh refine(const Mesh& mesh, const MeshFunction<bool>& cell_markers,
bool redistribute = true);
/// Create locally refined mesh
///
/// *Arguments*
/// refined_mesh (_Mesh_)
/// The mesh that will be the refined mesh.
/// mesh (_Mesh_)
/// The original mesh.
/// cell_markers (_MeshFunction_ <bool>)
/// A mesh function over booleans specifying which cells
/// that should be refined (and which should not).
/// redistribute (_bool_)
/// Optional argument to redistribiute the refined mesh if mesh is a
/// distributed mesh.
void refine(Mesh& refined_mesh, const Mesh& mesh,
const MeshFunction<bool>& cell_markers, bool redistribute = true);
}
#endif
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