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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 IGL_COPYLEFT_PROGRESSIVE_HULLS_H
#define IGL_COPYLEFT_PROGRESSIVE_HULLS_H
#include "../igl_inline.h"
#include <Eigen/Core>
namespace igl
{
namespace copyleft
{
/// Collapses edges until desired number of faces is achieved but ensures
/// that new vertices are placed outside all previous meshes as per
/// "progressive hulls" in "Silhouette clipping" [Sander et al. 2000].
///
/// \pre Assumes (V,F) is a closed manifold mesh
///
/// @param[in] V #V by dim list of vertex positions
/// @param[in] F #F by 3 list of face indices into V.
/// @param[in] max_m desired number of output faces
/// @param[out] U #U by dim list of output vertex posistions (can be same ref as V)
/// @param[out] G #G by 3 list of output face indices into U (can be same ref as G)
/// @param[out] J #G list of indices into F of birth faces
/// @return true if m was reached (otherwise #G > m)
IGL_INLINE bool progressive_hulls(
const Eigen::MatrixXd & V,
const Eigen::MatrixXi & F,
const size_t max_m,
Eigen::MatrixXd & U,
Eigen::MatrixXi & G,
Eigen::VectorXi & J);
}
}
#ifndef IGL_STATIC_LIBRARY
# include "progressive_hulls.cpp"
#endif
#endif