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Merged branch 'dev_native' into lm_sla_supports_auto

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Added igl library files
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Lukas Matena 2018-10-26 15:45:52 +02:00
commit 7681d00ee5
2865 changed files with 142806 additions and 22325 deletions
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src/igl/find.h Normal file
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// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla Public License
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_FIND_H
#define IGL_FIND_H
#include "igl_inline.h"
#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
#include <Eigen/Dense>
#include <Eigen/Sparse>
namespace igl
{
// Find the non-zero entries and there respective indices in a sparse matrix.
// Like matlab's [I,J,V] = find(X)
//
// Templates:
// T should be a eigen sparse matrix primitive type like int or double
// Input:
// X m by n matrix whose entries are to be found
// Outputs:
// I nnz vector of row indices of non zeros entries in X
// J nnz vector of column indices of non zeros entries in X
// V nnz vector of type T non-zeros entries in X
//
template <
typename T,
typename DerivedI,
typename DerivedJ,
typename DerivedV>
IGL_INLINE void find(
const Eigen::SparseMatrix<T>& X,
Eigen::DenseBase<DerivedI> & I,
Eigen::DenseBase<DerivedJ> & J,
Eigen::DenseBase<DerivedV> & V);
template <
typename DerivedX,
typename DerivedI,
typename DerivedJ,
typename DerivedV>
IGL_INLINE void find(
const Eigen::DenseBase<DerivedX>& X,
Eigen::PlainObjectBase<DerivedI> & I,
Eigen::PlainObjectBase<DerivedJ> & J,
Eigen::PlainObjectBase<DerivedV> & V);
template <
typename DerivedX,
typename DerivedI>
IGL_INLINE void find(
const Eigen::DenseBase<DerivedX>& X,
Eigen::PlainObjectBase<DerivedI> & I);
// Find the non-zero entries and there respective indices in a sparse vector.
// Similar to matlab's [I,J,V] = find(X), but instead of [I,J] being
// subscripts into X, since X is a vector we just return I, a list of indices
// into X
//
// Templates:
// T should be a eigen sparse matrix primitive type like int or double
// Input:
// X vector whose entries are to be found
// Outputs:
// I nnz vector of indices of non zeros entries in X
// V nnz vector of type T non-zeros entries in X
template <typename T>
IGL_INLINE void find(
const Eigen::SparseVector<T>& X,
Eigen::Matrix<int,Eigen::Dynamic,1> & I,
Eigen::Matrix<T,Eigen::Dynamic,1> & V);
}
#ifndef IGL_STATIC_LIBRARY
# include "find.cpp"
#endif
#endif