40 lines
1.5 KiB
C++
40 lines
1.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public License
|
|
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
|
|
// obtain one at http://mozilla.org/MPL/2.0/.
|
|
#include "avg_edge_length.h"
|
|
|
|
#include <vector>
|
|
|
|
template <typename DerivedV, typename DerivedF>
|
|
IGL_INLINE double igl::avg_edge_length(
|
|
const Eigen::MatrixBase<DerivedV>& V,
|
|
const Eigen::MatrixBase<DerivedF>& F)
|
|
{
|
|
double avg = 0;
|
|
long int count = 0;
|
|
|
|
// Augh. Technically this is double counting interior edges...
|
|
for (unsigned i=0;i<F.rows();++i)
|
|
{
|
|
for (unsigned j=0;j<F.cols();++j)
|
|
{
|
|
++count;
|
|
avg += (V.row(F(i,j)) - V.row(F(i,(j+1)%F.cols()))).norm();
|
|
}
|
|
}
|
|
|
|
return avg / (double) count;
|
|
}
|
|
|
|
#ifdef IGL_STATIC_LIBRARY
|
|
// Explicit template instantiation
|
|
// generated by autoexplicit.sh
|
|
template double igl::avg_edge_length<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(Eigen::MatrixBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&);
|
|
template double igl::avg_edge_length<Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, 3, 0, -1, 3> >(Eigen::MatrixBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> > const&);
|
|
// generated by autoexplicit.sh
|
|
#endif
|