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36 lines
1.0 KiB
36 lines
1.0 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 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_NORMALIZE_ROW_SUMS_H
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#define IGL_NORMALIZE_ROW_SUMS_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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// Normalize the rows in A so that their sums are each 1 and place the new
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// entries in B
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// Inputs:
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// A #rows by k input matrix
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// Outputs:
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// B #rows by k input matrix, can be the same as A
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//
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// Note: This is just calling an Eigen one-liner:
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//
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// B = A.array().colwise() / A.array().rowwise().sum();
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//
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template <typename DerivedA, typename DerivedB>
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IGL_INLINE void normalize_row_sums(
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const Eigen::MatrixBase<DerivedA>& A,
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Eigen::MatrixBase<DerivedB> & B);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "normalize_row_sums.cpp"
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#endif
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#endif
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