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72 lines
2.3 KiB
72 lines
2.3 KiB
// 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_IS_EDGE_MANIFOLD_H
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#define IGL_IS_EDGE_MANIFOLD_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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// check if the mesh is edge-manifold (every edge is incident one one face
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// (boundary) or two oppositely oriented faces).
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//
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// Inputs:
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// F #F by 3 list of triangle indices
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// Returns true iff all edges are manifold
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//
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// See also: is_vertex_manifold
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template <typename DerivedF>
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IGL_INLINE bool is_edge_manifold(
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const Eigen::MatrixBase<DerivedF>& F);
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// Inputs:
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// F #F by 3 list of triangle indices
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// Outputs:
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// BF #F by 3 list of flags revealing if edge opposite corresponding vertex
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// is non-manifold.
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// E #E by 2 list of unique edges
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// EMAP 3*#F list of indices of opposite edges in "E"
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// BE #E list of flages whether edge is non-manifold
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template <
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typename DerivedF,
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typename DerivedBF,
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typename DerivedE,
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typename DerivedEMAP,
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typename DerivedBE>
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IGL_INLINE bool is_edge_manifold(
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const Eigen::MatrixBase<DerivedF>& F,
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Eigen::PlainObjectBase<DerivedBF>& BF,
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Eigen::PlainObjectBase<DerivedE>& E,
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Eigen::PlainObjectBase<DerivedEMAP>& EMAP,
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Eigen::PlainObjectBase<DerivedBE>& BE);
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// Inputs:
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// F #F by 3 list of triangle indices
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// ne number of edges (#E)
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// EMAP 3*#F list of indices of opposite edges in "E"
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// Outputs:
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// BF #F by 3 list of flags revealing if edge opposite corresponding vertex
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// is non-manifold.
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// BE ne list of flages whether edge is non-manifold
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template <
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typename DerivedF,
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typename DerivedEMAP,
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typename DerivedBF,
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typename DerivedBE>
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IGL_INLINE bool is_edge_manifold(
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const Eigen::MatrixBase<DerivedF>& F,
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const typename DerivedF::Index ne,
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const Eigen::MatrixBase<DerivedEMAP>& EMAP,
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Eigen::PlainObjectBase<DerivedBF>& BF,
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Eigen::PlainObjectBase<DerivedBE>& BE);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "is_edge_manifold.cpp"
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#endif
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#endif
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