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https://github.com/SoftFever/OrcaSlicer.git
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2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
32 lines
981 B
C++
32 lines
981 B
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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#include "orth.h"
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// Broken Implementation
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IGL_INLINE void igl::orth(const Eigen::MatrixXd &A, Eigen::MatrixXd &Q)
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{
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//perform svd on A = U*S*V' (V is not computed and only the thin U is computed)
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Eigen::JacobiSVD<Eigen::MatrixXd> svd(A, Eigen::ComputeThinU );
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Eigen::MatrixXd U = svd.matrixU();
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const Eigen::VectorXd S = svd.singularValues();
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//get rank of A
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int m = A.rows();
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int n = A.cols();
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double tol = std::max(m,n) * S.maxCoeff() * 2.2204e-16;
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int r = 0;
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for (int i = 0; i < S.rows(); ++r,++i)
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{
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if (S[i] < tol)
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break;
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}
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//keep r first columns of U
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Q = U.block(0,0,U.rows(),r);
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}
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