56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2018 Zhongshi Jiang <jiangzs@nyu.edu>
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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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#include "topological_hole_fill.h"
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template <
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typename DerivedF,
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typename Derivedb,
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typename VectorIndex,
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typename DerivedF_filled>
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IGL_INLINE void igl::topological_hole_fill(
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const Eigen::MatrixBase<DerivedF> & F,
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const Eigen::MatrixBase<Derivedb> & b,
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const std::vector<VectorIndex> & holes,
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Eigen::PlainObjectBase<DerivedF_filled> &F_filled)
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{
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int n_filled_faces = 0;
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int num_holes = holes.size();
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int real_F_num = F.rows();
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const int V_rows = F.maxCoeff()+1;
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for (int i = 0; i < num_holes; i++)
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n_filled_faces += holes[i].size();
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F_filled.resize(n_filled_faces + real_F_num, 3);
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F_filled.topRows(real_F_num) = F;
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int new_vert_id = V_rows;
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int new_face_id = real_F_num;
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for (int i = 0; i < num_holes; i++, new_vert_id++)
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{
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int cur_bnd_size = holes[i].size();
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int it = 0;
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int back = holes[i].size() - 1;
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F_filled.row(new_face_id++) << holes[i][it], holes[i][back], new_vert_id;
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while (it != back)
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{
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F_filled.row(new_face_id++)
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<< holes[i][(it + 1)],
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holes[i][(it)], new_vert_id;
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it++;
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}
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}
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assert(new_face_id == F_filled.rows());
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assert(new_vert_id == V_rows + num_holes);
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}
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#ifdef IGL_STATIC_LIBRARY
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template void igl::topological_hole_fill<Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::vector<int, std::allocator<int> > >(Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, 1,0, -1, 1> > const&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
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#endif
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