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51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 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 IS_BOUNDARY_EDGE_H
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#define IS_BOUNDARY_EDGE_H
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#include <Eigen/Dense>
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namespace igl
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{
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// IS_BOUNDARY_EDGE Determine for each edge E if it is a "boundary edge" in F.
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// Boundary edges are undirected edges which occur only once.
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//
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// Inputs:
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// E #E by 2 list of edges
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// F #F by 3 list of triangles
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// Outputs:
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// B #E list bools. true iff unoriented edge occurs exactly once in F
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// (non-manifold and non-existant edges will be false)
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//
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template <
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typename DerivedF,
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typename DerivedE,
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typename DerivedB>
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void is_boundary_edge(
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const Eigen::PlainObjectBase<DerivedE> & E,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedB> & B);
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// Wrapper where Edges should also be computed from F
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// E #E by 2 list of edges
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// EMAP #F*3 list of indices mapping allE to E
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template <
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typename DerivedF,
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typename DerivedE,
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typename DerivedB,
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typename DerivedEMAP>
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void is_boundary_edge(
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedB> & B,
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Eigen::PlainObjectBase<DerivedE> & E,
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Eigen::PlainObjectBase<DerivedEMAP> & EMAP);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "is_boundary_edge.cpp"
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#endif
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#endif
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