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update bundled_deps

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QIDI TECH
2024-11-09 14:05:44 +08:00
parent 17c9bfd127
commit cfc606fea9
1662 changed files with 710 additions and 168 deletions
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47
bundled_deps/libigl/igl/edges.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 "edges.h"
#include "adjacency_matrix.h"
#include <iostream>
template <typename DerivedF, typename DerivedE>
IGL_INLINE void igl::edges(
const Eigen::MatrixBase<DerivedF> & F,
Eigen::PlainObjectBase<DerivedE> & E)
{
// build adjacency matrix
typedef typename DerivedF::Scalar Index;
Eigen::SparseMatrix<Index> A;
igl::adjacency_matrix(F,A);
// Number of non zeros should be twice number of edges
assert(A.nonZeros()%2 == 0);
// Resize to fit edges
E.resize(A.nonZeros()/2,2);
int i = 0;
// Iterate over outside
for(int k=0; k<A.outerSize(); ++k)
{
// Iterate over inside
for(typename Eigen::SparseMatrix<Index>::InnerIterator it (A,k); it; ++it)
{
// only add edge in one direction
if(it.row()<it.col())
{
E(i,0) = it.row();
E(i,1) = it.col();
i++;
}
}
}
}
#ifdef IGL_STATIC_LIBRARY
// Explicit template instantiation
template void igl::edges<Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 2, 0, -1, 2> >(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 2, 0, -1, 2> >&);
template void igl::edges<Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
#endif