53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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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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#ifndef IGL_RANDOM_POINTS_ON_MESH_H
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#define IGL_RANDOM_POINTS_ON_MESH_H
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#include "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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// RANDOM_POINTS_ON_MESH Randomly sample a mesh (V,F) n times.
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//
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// Inputs:
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// n number of samples
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// V #V by dim list of mesh vertex positions
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// F #F by 3 list of mesh triangle indices
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// Outputs:
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// B n 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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// FI n list of indices into F
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//
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template <typename DerivedV, typename DerivedF, typename DerivedB, typename DerivedFI>
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IGL_INLINE void random_points_on_mesh(
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const int n,
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const Eigen::PlainObjectBase<DerivedV > & V,
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const Eigen::PlainObjectBase<DerivedF > & F,
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Eigen::PlainObjectBase<DerivedB > & B,
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Eigen::PlainObjectBase<DerivedFI > & FI);
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// Outputs:
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// B n by #V sparse matrix so that B*V produces a list of sample points
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template <typename DerivedV, typename DerivedF, typename ScalarB, typename DerivedFI>
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IGL_INLINE void random_points_on_mesh(
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const int n,
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const Eigen::PlainObjectBase<DerivedV > & V,
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const Eigen::PlainObjectBase<DerivedF > & F,
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Eigen::SparseMatrix<ScalarB > & B,
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Eigen::PlainObjectBase<DerivedFI > & FI);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "random_points_on_mesh.cpp"
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#endif
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#endif
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