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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 "is_border_vertex.h"
#include <vector>
#include "triangle_triangle_adjacency.h"
template <typename DerivedV, typename DerivedF>
IGL_INLINE std::vector<bool> igl::is_border_vertex(
const Eigen::PlainObjectBase<DerivedV> &V,
const Eigen::PlainObjectBase<DerivedF> &F)
{
DerivedF FF;
igl::triangle_triangle_adjacency(F,FF);
std::vector<bool> ret(V.rows());
for(unsigned i=0; i<ret.size();++i)
ret[i] = false;
for(unsigned i=0; i<F.rows();++i)
for(unsigned j=0;j<F.cols();++j)
if(FF(i,j) == -1)
{
ret[F(i,j)] = true;
ret[F(i,(j+1)%F.cols())] = true;
}
return ret;
}
#ifdef IGL_STATIC_LIBRARY
// Explicit template instantiation
template std::vector<bool, std::allocator<bool> > igl::is_border_vertex<Eigen::Matrix<double, -1, 3, 0, -1, 3>, Eigen::Matrix<int, -1, 3, 0, -1, 3> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 3, 0, -1, 3> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 0, -1, 3> > const&);
template std::vector<bool, std::allocator<bool> > igl::is_border_vertex<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&);
template std::vector<bool, std::allocator<bool> > igl::is_border_vertex<Eigen::Matrix<double, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, 1, 0, -1, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&);
#endif
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