57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
// 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_CONNECT_BOUNDARY_TO_INFINITY_H
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#define IGL_CONNECT_BOUNDARY_TO_INFINITY_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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// Connect all boundary edges to a fictitious point at infinity.
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//
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// Inputs:
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// F #F by 3 list of face indices into some V
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// Outputs:
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// FO #F+#O by 3 list of face indices into [V;inf inf inf], original F are
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// guaranteed to come first. If (V,F) was a manifold mesh, now it is
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// closed with a possibly non-manifold vertex at infinity (but it will be
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// edge-manifold).
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template <typename DerivedF, typename DerivedFO>
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IGL_INLINE void connect_boundary_to_infinity(
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedFO> & FO);
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// Inputs:
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// inf_index index of point at infinity (usually V.rows() or F.maxCoeff())
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template <typename DerivedF, typename DerivedFO>
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IGL_INLINE void connect_boundary_to_infinity(
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const Eigen::PlainObjectBase<DerivedF> & F,
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const typename DerivedF::Scalar inf_index,
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Eigen::PlainObjectBase<DerivedFO> & FO);
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// Inputs:
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// V #V by 3 list of vertex positions
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// F #F by 3 list of face indices into some V
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// Outputs:
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// VO #V+1 by 3 list of vertex positions, original V are guaranteed to
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// come first. Last point is inf, inf, inf
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// FO #F+#O by 3 list of face indices into VO
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//
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedVO,
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typename DerivedFO>
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IGL_INLINE void connect_boundary_to_infinity(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedVO> & VO,
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Eigen::PlainObjectBase<DerivedFO> & FO);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "connect_boundary_to_infinity.cpp"
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#endif
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#endif
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