is_triangle_mesh.hpp

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// Copyright (c) 2012-2019 University of Lyon and CNRS (France).
// All rights reserved.
//
// This file is part of MEPP2; 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.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#pragma once
 
#include <boost/graph/graph_traits.hpp>
 
namespace FEVV {
namespace Filters {
 
template< typename FaceGraph >
inline bool
is_triangle_mesh(const FaceGraph &g)
{
  auto face_range_pair = faces(g);
  auto iter = face_range_pair.first;
  for(; iter != face_range_pair.second; ++iter)
  {
    if(degree(*iter, g) != 3)
      return false;
  }
  return true;
}
 
} // namespace Filters
} // namespace FEVV