diff --git a/src/internal/Column.h b/src/internal/Column.h new file mode 100644 index 000000000..f83028ed0 --- /dev/null +++ b/src/internal/Column.h @@ -0,0 +1,83 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2006-2007 Benoit Jacob +// +// Eigen is free software; 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 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 General Public License for more +// details. +// +// You should have received a copy of the GNU General Public License along +// with Eigen; if not, write to the Free Software Foundation, Inc., 51 +// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. This exception does not invalidate any other reasons why a work +// based on this file might be covered by the GNU General Public License. + +#ifndef EI_COLUMN_H +#define EI_COLUMN_H + +template class EiColumn + : public EiObject > +{ + public: + typedef typename MatrixType::Scalar Scalar; + typedef typename MatrixType::Ref MatRef; + friend class EiObject >; + + static const int RowsAtCompileTime = MatrixType::RowsAtCompileTime, + ColsAtCompileTime = 1; + + EiColumn(const MatRef& matrix, int col) + : m_matrix(matrix), m_col(col) + { + EI_CHECK_COL_RANGE(matrix, col); + } + + EiColumn(const EiColumn& other) + : m_matrix(other.m_matrix), m_col(other.m_col) {} + + EI_INHERIT_ASSIGNMENT_OPERATORS(EiColumn) + + private: + EiColumn& _ref() { return *this; } + const EiColumn& _constRef() const { return *this; } + int _rows() const { return m_matrix.rows(); } + int _cols() const { return 1; } + + Scalar& _write(int row, int col=0) + { + EI_UNUSED(col); + EI_CHECK_ROW_RANGE(*this, row); + return m_matrix.write(row, m_col); + } + + Scalar _read(int row, int col=0) const + { + EI_UNUSED(col); + EI_CHECK_ROW_RANGE(*this, row); + return m_matrix.read(row, m_col); + } + + protected: + MatRef m_matrix; + const int m_col; +}; + +template +EiColumn +EiObject::col(int i) +{ + return EiColumn(static_cast(this)->ref(), i); +} + +#endif // EI_COLUMN_H