#ifndef IGL_AVERAGEEDGELENGTH_H
#define IGL_AVERAGEEDGELENGTH_H

#include "igl/igl_inline.h"
#include <Eigen/Core>
#include <string>
#include <vector>

namespace igl 
{
  // Compute the average edge length for the given triangle mesh
  // Templates:
  //   DerivedV derived from vertex positions matrix type: i.e. MatrixXd
  //   DerivedF derived from face indices matrix type: i.e. MatrixXi
  //   DerivedL derived from edge lengths matrix type: i.e. MatrixXd
  // Inputs:
  //   V  eigen matrix #V by 3
  //   F  #F by 3 list of mesh faces (must be triangles)
  // Outputs:
  //   l  average edge length
  //
  // See also: adjacency_matrix
  template <typename DerivedV, typename DerivedF>
  IGL_INLINE double avg_edge_length(
    const Eigen::PlainObjectBase<DerivedV>& V,
    const Eigen::PlainObjectBase<DerivedF>& F);

}

//#ifdef IGL_HEADER_ONLY
#  include "avg_edge_length.cpp"
//#endif

#endif