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38 lines
2.4 KiB
38 lines
2.4 KiB
1 year ago
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// 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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#include "randperm.h"
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#include "colon.h"
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#include <algorithm>
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template <typename DerivedI, typename URBG>
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IGL_INLINE void igl::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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{
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Eigen::VectorXi II;
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igl::colon(0,1,n-1,II);
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I = II;
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std::shuffle(I.data(),I.data()+n, urbg);
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template void igl::randperm<Eigen::Matrix<int, -1, -1, 0, -1, -1>, std::minstd_rand0&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, std::minstd_rand0&);
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template void igl::randperm<Eigen::Matrix<int, -1, -1, 0, -1, -1>, std::minstd_rand&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, std::minstd_rand&);
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template void igl::randperm<Eigen::Matrix<int, -1, -1, 0, -1, -1>, std::mt19937_64&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, std::mt19937_64&);
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template void igl::randperm<Eigen::Matrix<int, -1, -1, 0, -1, -1>, std::mt19937&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, std::mt19937&);
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template void igl::randperm<Eigen::Matrix<int, -1, -1, 0, -1, -1>, std::mt19937 >(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, std::mt19937&&);
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template void igl::randperm<Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::minstd_rand0&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, std::minstd_rand0&);
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template void igl::randperm<Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::minstd_rand&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, std::minstd_rand&);
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template void igl::randperm<Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::mt19937_64&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, std::mt19937_64&);
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template void igl::randperm<Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::mt19937&>(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, std::mt19937&);
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template void igl::randperm<Eigen::Matrix<int, -1, 1, 0, -1, 1>, std::mt19937 >(int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, std::mt19937&&);
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#endif
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