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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
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Lukas Matena 2018-10-26 15:45:52 +02:00
commit 7681d00ee5
2865 changed files with 142806 additions and 22325 deletions
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src/igl/median.cpp Normal file
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// 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 "median.h"
#include "matrix_to_list.h"
#include <vector>
#include <algorithm>
template <typename DerivedV, typename mType>
IGL_INLINE bool igl::median(
const Eigen::MatrixBase<DerivedV> & V, mType & m)
{
using namespace std;
if(V.size() == 0)
{
return false;
}
vector<typename DerivedV::Scalar> vV;
matrix_to_list(V,vV);
// http://stackoverflow.com/a/1719155/148668
size_t n = vV.size()/2;
nth_element(vV.begin(),vV.begin()+n,vV.end());
if(vV.size()%2==0)
{
nth_element(vV.begin(),vV.begin()+n-1,vV.end());
m = 0.5*(vV[n]+vV[n-1]);
}else
{
m = vV[n];
}
return true;
}
#ifdef IGL_STATIC_LIBRARY
// Explicit template instantiation
// generated by autoexplicit.sh
template bool igl::median<Eigen::Block<Eigen::Matrix<float, -1, -1, 0, -1, -1>, -1, 1, true>, float>(Eigen::MatrixBase<Eigen::Block<Eigen::Matrix<float, -1, -1, 0, -1, -1>, -1, 1, true> > const&, float&);
// generated by autoexplicit.sh
template bool igl::median<Eigen::Block<Eigen::Matrix<double, -1, -1, 0, -1, -1>, -1, 1, true>, double>(Eigen::MatrixBase<Eigen::Block<Eigen::Matrix<double, -1, -1, 0, -1, -1>, -1, 1, true> > const&, double&);
#endif