calculate_vertex_normals.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>
#include <boost/graph/properties.hpp>
#include "FEVV/Wrappings/Geometry_traits.h"
#include "FEVV/Operators/Generic/Manifold/calculate_vertex_normal.hpp"
 
namespace FEVV {
namespace Filters {
 
template< typename HalfedgeGraph,
          typename PointMap,
          typename FaceNormalMap,
          typename VertexNormalMap,
          typename GeometryTraits >
void
calculate_vertex_normals(const HalfedgeGraph &g,
                         const PointMap &pm,
                         const FaceNormalMap &fnm, 
                         VertexNormalMap vnm,
                         const GeometryTraits &gt)
{
  typedef typename GeometryTraits::Vector Vector;
 
  typedef boost::graph_traits< HalfedgeGraph > GraphTraits;
  typedef typename GraphTraits::vertex_iterator vertex_iterator;
 
  vertex_iterator vb, ve;
  for(boost::tie(vb, ve) = vertices(g); vb != ve; ++vb)
  {
    Vector vec = FEVV::Operators::calculate_vertex_normal< HalfedgeGraph,
                                                           PointMap,
                                                           FaceNormalMap,
                                                           GeometryTraits >(
        *vb, g, pm, fnm, gt);
    put(vnm, *vb, vec);
  }
}
 
template< typename HalfedgeGraph,
          typename PointMap,
          typename FaceNormalMap,
          typename VertexNormalMap,
          typename GeometryTraits = FEVV::Geometry_traits< HalfedgeGraph > >
void
calculate_vertex_normals(const HalfedgeGraph &g,
                         const PointMap &pm,
                         const FaceNormalMap &fnm, 
                         VertexNormalMap vnm)
{
  GeometryTraits gt(g);
  calculate_vertex_normals< HalfedgeGraph,
                            PointMap,
                            FaceNormalMap,
                            VertexNormalMap,
                            GeometryTraits >(g, pm, fnm, vnm, gt);
}
 
} // namespace Filters
} // namespace FEVV