33 lines
963 B
C
33 lines
963 B
C
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 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_DIRECTED_EDGE_PARENTS_H
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#define IGL_DIRECTED_EDGE_PARENTS_H
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#include "igl_inline.h"
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#include <Eigen/Dense>
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namespace igl
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{
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// Recover "parents" (preceding edges) in a tree given just directed edges.
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//
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// Inputs:
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// E #E by 2 list of directed edges
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// Outputs:
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// P #E list of parent indices into E (-1) means root
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//
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template <typename DerivedE, typename DerivedP>
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IGL_INLINE void directed_edge_parents(
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const Eigen::PlainObjectBase<DerivedE> & E,
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Eigen::PlainObjectBase<DerivedP> & P);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "directed_edge_parents.cpp"
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#endif
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#endif
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