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Gral/Geometries/geometry-functors.h

#ifndef GRAL_BASE_GB_GEOMETRY_FUNCTORS_H
#define GRAL_BASE_GB_GEOMETRY_FUNCTORS_H


// $LICENSE

#include "Gral/Base/common-grid-basics.h"

//----------------------------------------------------------------
//----------------------------------------------------------------


//----------------------------------------------------------------
//                 vertex2coord_map
//----------------------------------------------------------------

template<class Geom>
class vertex2coord_map {
public:
  typedef typename Geom::grid_type  grid_type;
  typedef grid_types<grid_type>     gt;
  typedef typename gt::Vertex       Vertex;
  typedef typename Geom::coord_type coord_type;

  typedef Vertex                    argument_type;
  typedef coord_type                result_type;
private:
  const Geom* geom;
public:
  vertex2coord_map(const Geom& geo) : geom(&geo) {}
 
  const result_type& operator()(const Vertex& v) const { return geom->coord(v);}
};

template<class Geom>
inline vertex2coord_map<Geom> vertex2coord(const Geom& g)
{ return vertex2coord_map<Geom>(g);}


//----------------------------------------------------------------
//                 edge2length_map
//----------------------------------------------------------------
template<class Geom>
class edge2length_map {
public:
  typedef typename Geom::grid_type grid_type;
  typedef grid_types<grid_type>    gt;
  typedef typename  gt::Edge       Edge;

  typedef Edge                     argument_type;
  typedef double                   result_type;
private:
  const Geom* geom;
public:
  edge2length_map(const Geom& geo) : geom(&geo) {}
 
  result_type operator()(const Edge& e) const { return geom->length(e);}
};

template<class Geom>
inline edge2length_map<Geom> edge2length(const Geom& g) 
{ return edge2length_map<Geom>(g);}

#endif

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Copyright (c) Guntram Berti 1997-2002. See the GrAL Homepage for up-to-date information.

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