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// Copyright (C) 2008 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:  2008-08-11
// Last changed: 2008-08-11

#ifndef __HARMONIC_SMOOTHING_H
#define __HARMONIC_SMOOTHING_H

namespace dolfin
{

  class BoundaryMesh;
  class Mesh;

  /// This class implements harmonic mesh smoothing. Poisson's equation
  /// is solved with zero right-hand side (Laplace's equation) for each
  /// coordinate direction to compute new coordinates for all vertices,
  /// given new locations for the coordinates of the boundary.

  class HarmonicSmoothing
  {
  public:

    /// Move coordinates of mesh according to new boundary coordinates
    static void move(Mesh& mesh, const BoundaryMesh& new_boundary);

  };

}

#endif