34 lines
924 B
C++
34 lines
924 B
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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#include "sample_edges.h"
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IGL_INLINE void igl::sample_edges(
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const Eigen::MatrixXd & V,
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const Eigen::MatrixXi & E,
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const int k,
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Eigen::MatrixXd & S)
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{
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using namespace Eigen;
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// Resize output
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S.resize(V.rows() + k * E.rows(),V.cols());
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// Copy V at front of S
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S.block(0,0,V.rows(),V.cols()) = V;
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// loop over edges
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for(int i = 0;i<E.rows();i++)
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{
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VectorXd tip = V.row(E(i,0));
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VectorXd tail = V.row(E(i,1));
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for(int s=0;s<k;s++)
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{
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double f = double(s+1)/double(k+1);
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S.row(V.rows()+k*i+s) = f*tail + (1.0-f)*tip;
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}
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}
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}
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