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63 lines
2.2 KiB
63 lines
2.2 KiB
1 year ago
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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) 2016 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_EXTRACT_MANIFOLD_PATCHES
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#define IGL_EXTRACT_MANIFOLD_PATCHES
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#include "igl_inline.h"
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#include <Eigen/Dense>
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#include <vector>
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namespace igl {
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/// Extract a set of maximal patches from a given mesh.
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/// A maximal patch is a subset of the input faces that are connected via
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/// manifold edges; a patch is as large as possible.
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///
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/// @param[in] F #F by 3 list representing triangles.
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/// @param[in] EMAP #F*3 list of indices of unique undirected edges.
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/// @param[in] uEC #uE+1 list of cumsums of directed edges sharing each unique edge
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/// @param[in] uEE #F*3 list of indices into E (see `igl::unique_edge_map`)
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/// @param[out] P #F list of patch incides.
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/// @return number of manifold patches.
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template <
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typename DerivedF,
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typename DerivedEMAP,
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typename DeriveduEC,
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typename DeriveduEE,
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typename DerivedP>
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IGL_INLINE int extract_manifold_patches(
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const Eigen::MatrixBase<DerivedF>& F,
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const Eigen::MatrixBase<DerivedEMAP>& EMAP,
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const Eigen::MatrixBase<DeriveduEC>& uEC,
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const Eigen::MatrixBase<DeriveduEE>& uEE,
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Eigen::PlainObjectBase<DerivedP>& P);
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/// \overload
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/// @param[in] uE2E #uE list of lists of indices into E of coexisting edges.
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template <
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typename DerivedF,
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typename DerivedEMAP,
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typename uE2EType,
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typename DerivedP>
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IGL_INLINE int extract_manifold_patches(
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const Eigen::MatrixBase<DerivedF>& F,
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const Eigen::MatrixBase<DerivedEMAP>& EMAP,
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const std::vector<std::vector<uE2EType> >& uE2E,
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Eigen::PlainObjectBase<DerivedP>& P);
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/// \overload
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template <
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typename DerivedF,
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typename DerivedP>
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IGL_INLINE int extract_manifold_patches(
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const Eigen::MatrixBase<DerivedF> &F,
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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 "extract_manifold_patches.cpp"
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#endif
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#endif
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