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Diffstat (limited to 'extern/Eigen3/Eigen/src/misc/Image.h')
-rw-r--r-- | extern/Eigen3/Eigen/src/misc/Image.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/extern/Eigen3/Eigen/src/misc/Image.h b/extern/Eigen3/Eigen/src/misc/Image.h new file mode 100644 index 00000000000..19b3e08cbfd --- /dev/null +++ b/extern/Eigen3/Eigen/src/misc/Image.h @@ -0,0 +1,95 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com> +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, you can redistribute it and/or +// modify it under the terms of the GNU General Public License as +// published by the Free Software Foundation; either version 2 of +// the License, or (at your option) any later version. +// +// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see <http://www.gnu.org/licenses/>. + +#ifndef EIGEN_MISC_IMAGE_H +#define EIGEN_MISC_IMAGE_H + +namespace internal { + +/** \class image_retval_base + * + */ +template<typename DecompositionType> +struct traits<image_retval_base<DecompositionType> > +{ + typedef typename DecompositionType::MatrixType MatrixType; + typedef Matrix< + typename MatrixType::Scalar, + MatrixType::RowsAtCompileTime, // the image is a subspace of the destination space, whose + // dimension is the number of rows of the original matrix + Dynamic, // we don't know at compile time the dimension of the image (the rank) + MatrixType::Options, + MatrixType::MaxRowsAtCompileTime, // the image matrix will consist of columns from the original matrix, + MatrixType::MaxColsAtCompileTime // so it has the same number of rows and at most as many columns. + > ReturnType; +}; + +template<typename _DecompositionType> struct image_retval_base + : public ReturnByValue<image_retval_base<_DecompositionType> > +{ + typedef _DecompositionType DecompositionType; + typedef typename DecompositionType::MatrixType MatrixType; + typedef ReturnByValue<image_retval_base> Base; + typedef typename Base::Index Index; + + image_retval_base(const DecompositionType& dec, const MatrixType& originalMatrix) + : m_dec(dec), m_rank(dec.rank()), + m_cols(m_rank == 0 ? 1 : m_rank), + m_originalMatrix(originalMatrix) + {} + + inline Index rows() const { return m_dec.rows(); } + inline Index cols() const { return m_cols; } + inline Index rank() const { return m_rank; } + inline const DecompositionType& dec() const { return m_dec; } + inline const MatrixType& originalMatrix() const { return m_originalMatrix; } + + template<typename Dest> inline void evalTo(Dest& dst) const + { + static_cast<const image_retval<DecompositionType>*>(this)->evalTo(dst); + } + + protected: + const DecompositionType& m_dec; + Index m_rank, m_cols; + const MatrixType& m_originalMatrix; +}; + +} // end namespace internal + +#define EIGEN_MAKE_IMAGE_HELPERS(DecompositionType) \ + typedef typename DecompositionType::MatrixType MatrixType; \ + typedef typename MatrixType::Scalar Scalar; \ + typedef typename MatrixType::RealScalar RealScalar; \ + typedef typename MatrixType::Index Index; \ + typedef Eigen::internal::image_retval_base<DecompositionType> Base; \ + using Base::dec; \ + using Base::originalMatrix; \ + using Base::rank; \ + using Base::rows; \ + using Base::cols; \ + image_retval(const DecompositionType& dec, const MatrixType& originalMatrix) \ + : Base(dec, originalMatrix) {} + +#endif // EIGEN_MISC_IMAGE_H |