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31 lines
961 B
31 lines
961 B
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2020 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_FACET_ADJACENCY_MATRIX_H
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#define IGL_FACET_ADJACENCY_MATRIX_H
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#include <Eigen/Core>
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#include <Eigen/Sparse>
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#include "igl_inline.h"
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namespace igl
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{
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/// Construct a #F×#F adjacency matrix with A(i,j)>0 indicating that faces i and j
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/// share an edge.
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///
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/// @param[in] F #F by 3 list of facets
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/// @param[out] A #F by #F adjacency matrix
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template <typename DerivedF, typename Atype>
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IGL_INLINE void facet_adjacency_matrix(
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const Eigen::MatrixBase<DerivedF> & F,
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Eigen::SparseMatrix<Atype> & A);
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};
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#ifndef IGL_STATIC_LIBRARY
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# include "facet_adjacency_matrix.cpp"
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#endif
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#endif
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