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54 lines
1.9 KiB
54 lines
1.9 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) 2020 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_BLUE_NOISE_H
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#define IGL_BLUE_NOISE_H
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#include "igl_inline.h"
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#include "generate_default_urbg.h"
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#include <Eigen/Core>
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namespace igl
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{
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/// "Fast Poisson Disk Sampling in Arbitrary Dimensions" [Bridson 2007].
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///
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/// For very dense samplings this is faster than (up to 2x) cyCodeBase's
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/// implementation of "Sample Elimination for Generating Poisson Disk Sample
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/// Sets" [Yuksel 2015]. YMMV
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///
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/// @param[in] V #V by dim list of mesh vertex positions
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/// @param[in] F #F by 3 list of mesh triangle indices into rows of V
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/// @param[in] r Poisson disk radius (evaluated according to Euclidean distance on V)
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/// @param[out] B #P by 3 list of barycentric coordinates, ith row are coordinates of
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/// ith sampled point in face FI(i)
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/// @param[out] FI #P list of indices into F
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/// @param[out] P #P by dim list of sample positions.
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/// @param[in,out] urbg An instance of UnformRandomBitGenerator (e.g.,
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/// `std::minstd_rand(0)`)
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/// \see random_points_on_mesh
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedB,
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typename DerivedFI,
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typename DerivedP,
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typename URBG = DEFAULT_URBG
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>
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IGL_INLINE void blue_noise(
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const Eigen::MatrixBase<DerivedV> & V,
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const Eigen::MatrixBase<DerivedF> & F,
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const typename DerivedV::Scalar r,
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Eigen::PlainObjectBase<DerivedB> & B,
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Eigen::PlainObjectBase<DerivedFI> & FI,
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Eigen::PlainObjectBase<DerivedP> & P,
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URBG && urbg = igl::generate_default_urbg());
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "blue_noise.cpp"
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#endif
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#endif
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