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48 lines
1.8 KiB
48 lines
1.8 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 Qingnan Zhou <qnzhou@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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//
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#ifndef IGL_COPYLEFT_RESOLVE_DUPLICATED_FACES
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#define IGL_COPYLEFT_RESOLVE_DUPLICATED_FACES
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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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/// Resolve duplicated faces according to the following rules per unique face:
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///
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/// 1. If the number of positively oriented faces equals the number of
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/// negatively oriented faces, remove all duplicated faces at this triangle.
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/// 2. If the number of positively oriented faces equals the number of
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/// negatively oriented faces plus 1, keeps one of the positively oriented
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/// face.
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/// 3. If the number of positively oriented faces equals the number of
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/// negatively oriented faces minus 1, keeps one of the negatively oriented
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/// face.
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/// 4. If the number of postively oriented faces differ with the number of
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/// negativley oriented faces by more than 1, the mesh is not orientable.
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/// An exception will be thrown.
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///
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/// @param[in] F1 #F1 by 3 array of input faces.
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/// @param[out] F2 #F2 by 3 array of output faces without duplicated faces.
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/// @param[out] J #F2 list of indices into F1.
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template<
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typename DerivedF1,
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typename DerivedF2,
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typename DerivedJ >
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IGL_INLINE void resolve_duplicated_faces(
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const Eigen::MatrixBase<DerivedF1>& F1,
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Eigen::PlainObjectBase<DerivedF2>& F2,
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Eigen::PlainObjectBase<DerivedJ>& J);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "resolve_duplicated_faces.cpp"
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#endif
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#endif
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