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39 lines
1.2 KiB
39 lines
1.2 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2020 Oded Stein <oded.stein@columbia.edu>
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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_ORIENT_HALFEDGES_H
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#define IGL_ORIENT_HALFEDGES_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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/// Orients halfedges for a triangle mesh, assigning them to a unique edge.
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///
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/// @param[in] F #F by 3 input mesh connectivity
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/// @param[out] E #E by 3 a mapping from each halfedge to each edge
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/// @param[out] oE #E by 3 the orientation (e.g., -1 or 1) of each halfedge compared to
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/// the orientation of the actual edge. Every edge appears positively oriented
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/// exactly once.
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///
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/// \see unique_simplices
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template <typename DerivedF, typename DerivedE, typename DerivedOE>
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IGL_INLINE void orient_halfedges(
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const Eigen::MatrixBase<DerivedF>& F,
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Eigen::PlainObjectBase<DerivedE>& E,
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Eigen::PlainObjectBase<DerivedOE>& oE);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "orient_halfedges.cpp"
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#endif
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#endif
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