Edge.h

// Copyright (C) 2006-2010 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/>.
//
// Modified by Johan Hoffman 2006.
// Modified by Kristoffer Selim 2009.
//
// First added:  2006-06-02
// Last changed: 2011-02-08
 
#ifndef __EDGE_H
#define __EDGE_H
 
#include <memory>
 
#include "Mesh.h"
#include "MeshEntity.h"
#include "MeshEntityIteratorBase.h"
#include "MeshFunction.h"
 
namespace dolfin
{

 
  class Edge : public MeshEntity
  {
  public:

    Edge(const Mesh& mesh, std::size_t index) : MeshEntity(mesh, 1, index) {}

    Edge(MeshEntity& entity) : MeshEntity(entity.mesh(), 1, entity.index()) {}

    ~Edge() {}

    double length() const;

    double dot(const Edge& edge) const;
 
  };

  typedef MeshEntityIteratorBase<Edge> EdgeIterator;
 
}
 
#endif