64 lines
2.0 KiB
C++
64 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) 2016 Oded Stein <oded.stein@columbia.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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#ifndef IGL_LOOP_H
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#define IGL_LOOP_H
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#include <igl/igl_inline.h>
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#include <Eigen/Core>
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#include <Eigen/Sparse>
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namespace igl
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{
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// LOOP Given the triangle mesh [V, F], where n_verts = V.rows(), computes
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// newV and a sparse matrix S s.t. [newV, newF] is the subdivided mesh where
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// newV = S*V.
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//
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// Inputs:
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// n_verts an integer (number of mesh vertices)
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// F an m by 3 matrix of integers of triangle faces
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// Outputs:
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// S a sparse matrix (will become the subdivision matrix)
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// newF a matrix containing the new faces
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template <
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typename DerivedF,
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typename SType,
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typename DerivedNF>
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IGL_INLINE void loop(
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const int n_verts,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::SparseMatrix<SType>& S,
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Eigen::PlainObjectBase<DerivedNF> & NF);
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// LOOP Given the triangle mesh [V, F], computes number_of_subdivs steps of loop subdivision and outputs the new mesh [newV, newF]
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//
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// Inputs:
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// V an n by 3 matrix of vertices
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// F an m by 3 matrix of integers of triangle faces
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// number_of_subdivs an integer that specifies how many subdivision steps to do
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// Outputs:
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// NV a matrix containing the new vertices
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// NF a matrix containing the new faces
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedNV,
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typename DerivedNF>
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IGL_INLINE void loop(
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const Eigen::PlainObjectBase<DerivedV>& V,
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const Eigen::PlainObjectBase<DerivedF>& F,
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Eigen::PlainObjectBase<DerivedNV>& NV,
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Eigen::PlainObjectBase<DerivedNF>& NF,
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const int number_of_subdivs = 1);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "loop.cpp"
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#endif
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#endif
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