40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
// 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_RANDPERM_H
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#define IGL_RANDPERM_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <random>
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namespace igl
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{
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// Like matlab's randperm(n) but minus 1
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//
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// When urbg is not specified, randperm will use default random bit generator
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// std::minstd_rand initialized with random seed generated by std::rand()
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//
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// Inputs:
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// n number of elements
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// urbg An instance of UnformRandomBitGenerator.
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// Outputs:
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// I n list of rand permutation of 0:n-1
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template <typename DerivedI, typename URBG>
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IGL_INLINE void randperm(
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const int n,
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Eigen::PlainObjectBase<DerivedI> & I,
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URBG && urbg);
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template <typename DerivedI>
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IGL_INLINE void randperm(
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const int n,
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Eigen::PlainObjectBase<DerivedI> & I);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "randperm.cpp"
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#endif
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#endif
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