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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public License
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef FACET_COMPONENTS_H
#define FACET_COMPONENTS_H
#include "igl_inline.h"
#include <Eigen/Core>
#include <vector>
namespace igl
{
/// Compute connected components of facets based on edge-edge adjacency.
///
/// For connected components on vertices see igl::vertex_components
///
/// @param[in] F #F by 3 list of triangle indices
/// @param[out] C #F list of connected component ids
/// @return number of connected components
template <typename DerivedF, typename DerivedC>
IGL_INLINE int facet_components(
const Eigen::MatrixBase<DerivedF> & F,
Eigen::PlainObjectBase<DerivedC> & C);
/// \overload
///
/// @param[in] TT #TT by 3 list of list of adjacency triangles (see
/// triangle_triangle_adjacency.h)
/// @param[out] counts #C list of number of facets in each components
template <
typename TTIndex,
typename DerivedC,
typename Derivedcounts>
IGL_INLINE void facet_components(
const std::vector<std::vector<std::vector<TTIndex > > > & TT,
Eigen::PlainObjectBase<DerivedC> & C,
Eigen::PlainObjectBase<Derivedcounts> & counts);
}
#ifndef IGL_STATIC_LIBRARY
# include "facet_components.cpp"
#endif
#endif