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58 lines
2.2 KiB
58 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) 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 IGL_COPYLEFT_CGAL_OUTER_HULL_LEGACY_H
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#define IGL_COPYLEFT_CGAL_OUTER_HULL_LEGACY_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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namespace copyleft
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{
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namespace cgal
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{
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/// Compute the "outer hull" of a potentially non-manifold mesh (V,F) whose
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/// intersections have been "resolved" (e.g. using `cork` or
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/// `igl::copyleft::cgal::selfintersect`). The outer hull is defined to be all facets
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/// (regardless of orientation) for which there exists some path from infinity
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/// to the face without intersecting any other facets. For solids, this is the
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/// surface of the solid. In general this includes any thin "wings" or
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/// "flaps". This implementation largely follows Section 3.6 of "Direct
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/// repair of self-intersecting meshes" [Attene 2014].
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///
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/// \note This doesn't require the input mesh to be piecewise constant
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/// winding number, but won't handle multiple non-nested connected
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/// components.
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///
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/// @param[in] V #V by 3 list of vertex positions
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/// @param[in] F #F by 3 list of triangle indices into V
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/// @param[out] G #G by 3 list of output triangle indices into V
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/// @param[out] J #G list of indices into F
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/// @param[out] flip #F list of whether facet was added to G **and** flipped orientation
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/// (false for faces not added to G)
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedG,
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typename DerivedJ,
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typename Derivedflip>
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IGL_INLINE void outer_hull_legacy(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedG> & G,
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Eigen::PlainObjectBase<DerivedJ> & J,
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Eigen::PlainObjectBase<Derivedflip> & flip);
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}
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "outer_hull_legacy.cpp"
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#endif
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#endif
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