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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.
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
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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#ifndef IGL_DIAG_H
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#define IGL_DIAG_H
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#include "igl_inline.h"
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#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
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#include <Eigen/Sparse>
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namespace igl
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{
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// http://forum.kde.org/viewtopic.php?f=74&t=117476&p=292388#p292388
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//
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// This is superceded by
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// VectorXd V = X.diagonal() and
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// SparseVector<double> V = X.diagonal().sparseView()
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// SparseMatrix<double> X = V.asDiagonal().sparseView()
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//
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//
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// Either extracts the main diagonal of a matrix as a vector OR converts a
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// vector into a matrix with vector along the main diagonal. Like matlab's
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// diag function
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// Templates:
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// T should be a eigen sparse matrix primitive type like int or double
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// Inputs:
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// X an m by n sparse matrix
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// Outputs:
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// V a min(m,n) sparse vector
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template <typename T>
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IGL_INLINE void diag(
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const Eigen::SparseMatrix<T>& X,
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Eigen::SparseVector<T>& V);
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template <typename T,typename DerivedV>
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IGL_INLINE void diag(
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const Eigen::SparseMatrix<T>& X,
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Eigen::MatrixBase<DerivedV>& V);
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// Templates:
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// T should be a eigen sparse matrix primitive type like int or double
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// Inputs:
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// V a m sparse vector
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// Outputs:
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// X a m by m sparse matrix
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template <typename T>
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IGL_INLINE void diag(
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const Eigen::SparseVector<T>& V,
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Eigen::SparseMatrix<T>& X);
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template <typename T, typename DerivedV>
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IGL_INLINE void diag(
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const Eigen::MatrixBase<DerivedV>& V,
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Eigen::SparseMatrix<T>& X);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "diag.cpp"
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#endif
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#endif
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