[Olena-patches] milena r1096: Add iterator on line

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2007-09-10 Simon Nivault &lt;simon.nivault(a)lrde.epita.fr&gt; Add iterator on line * mln/core/image1d_b.hh, * mln/core/image2d_b.hh: Type line_piter added. * mln/core/line_piter.hh: The Iterator. * mln/core/macros.hh: New macro mln_line_piter. * tests/line_piter.cc: New. --- mln/core/image1d_b.hh | 2 mln/core/image2d_b.hh | 2 mln/core/line_piter.hh | 185 +++++++++++++++++++++++++++++++++++++++++++++++++ mln/core/macros.hh | 3 tests/line_piter.cc | 52 +++++++++++++ 5 files changed, 244 insertions(+) Index: trunk/milena/tests/line_piter.cc =================================================================== --- trunk/milena/tests/line_piter.cc (revision 0) +++ trunk/milena/tests/line_piter.cc (revision 1096) @@ -0,0 +1,52 @@ +// Copyright (C) 2007 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +/*! \file tests/image2d_b.cc + * + * \brief Tests on mln::image2d_b. + */ + +#include <mln/core/image2d_b.hh> +#include <mln/core/line_piter.hh> + +int main() +{ + using namespace mln; + + const unsigned nrows = 6; + const unsigned ncols = 4; + const unsigned border = 2; + + image2d_b<int> f(nrows, ncols, border); + + image2d_b<int>::line_piter p(f.domain()); + + for_all(p) + { + std::cout << p <<std::endl; + } +} Index: trunk/milena/mln/core/macros.hh =================================================================== --- trunk/milena/mln/core/macros.hh (revision 1095) +++ trunk/milena/mln/core/macros.hh (revision 1096) @@ -110,6 +110,9 @@ # define mln_piter(T) typename T::fwd_piter # define mln_piter_(T) T::fwd_piter +/// Shortcut to access the type of point by line iterator (line_piter) associated to T. +# define mln_line_piter(T) typename T::line_piter + /// Shortcut to access the type of point set (pset) associated to T. # define mln_pset(T) typename T::pset Index: trunk/milena/mln/core/line_piter.hh =================================================================== --- trunk/milena/mln/core/line_piter.hh (revision 0) +++ trunk/milena/mln/core/line_piter.hh (revision 1096) @@ -0,0 +1,185 @@ +// Copyright (C) 2007 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef MLN_CORE_LINE_PITER_HH +# define MLN_CORE_LINE_PITER_HH + +/*! \file mln/core/line_piter.hh + * + * \brief Definition of iterators on points by lines. + */ + +# include <mln/core/concept/point_iterator.hh> + + +namespace mln +{ + + /*! \brief A generic forward iterator on points by lines. + * + * The parameter \c P is the type of points. + */ + template <typename P> + class line_piter_ : public Point_Iterator< line_piter_<P> > + { + public: + + /// Space dimension. + enum { dim = P::dim }; + + /// Point_Site associated type. + typedef P psite; + + /// Point associated type. + typedef P point; + + /// Dpoint associated type. + typedef mln_dpoint(P) dpoint; + + /// Coordinate associated type. + typedef mln_coord(P) coord; + + /*! \brief Constructor. + * + * \param[in] b A box. + */ + line_piter_(const box_<P>& b); + + /// Convertion to point. + operator P() const; + + /// Address of the point. + const P* pointer_() const; + + /// Give the i-th coordinate. + coord operator[](unsigned i) const; + + /// Test the iterator validity. + bool is_valid() const; + + /// Invalidate the iterator. + void invalidate(); + + /// Start an iteration. + void start(); + + /// Go to the next point. + void next_(); + + private: + const box_<P>& b_; + P p_, nop_; + }; + + +# ifndef MLN_INCLUDE_ONLY + + + // line_piter_<P> + + template <typename P> + line_piter_<P>::line_piter_(const box_<P>& b) + : b_(b) + { + nop_ = b_.pmax(); + if (dim == 1) + ++nop_[0]; + else + { + nop_[0] = 0; + ++nop_[1]; + } + invalidate(); + } + + template <typename P> + line_piter_<P>::operator P() const + { + return p_; + } + + template <typename P> + const P* + line_piter_<P>::pointer_() const + { + return & p_; + } + + template <typename P> + mln_coord(P) + line_piter_<P>::operator[](unsigned i) const + { + mln_invariant(p_[0] == 0); + assert(i < dim); + return p_[i]; + } + + template <typename P> + bool + line_piter_<P>::is_valid() const + { + return p_ != nop_; + } + + template <typename P> + void + line_piter_<P>::invalidate() + { + p_ = nop_; + } + + template <typename P> + void + line_piter_<P>::start() + { + p_ = b_.pmin(); + } + + template <typename P> + void + line_piter_<P>::next_() + { + for (int c = 1; c < dim; ++c) + { + if (p_[c] != b_.pmax()[c]) + { + ++p_[c]; + break; + } + p_[c] = b_.pmin()[c]; + } + if (p_ == b_.pmin()) + p_ = nop_; + } + + +# endif // ! MLN_INCLUDE_ONLY + +} // end of namespace mln + + +#endif // ! MLN_CORE_LINE_PITER_HH Index: trunk/milena/mln/core/image1d_b.hh =================================================================== --- trunk/milena/mln/core/image1d_b.hh (revision 1095) +++ trunk/milena/mln/core/image1d_b.hh (revision 1096) @@ -40,6 +40,7 @@ # include <mln/value/set.hh> # include <mln/fun/i2v/all.hh> +# include <mln/core/line_piter.hh> // FIXME: @@ -83,6 +84,7 @@ typedef dpoint1d dpoint; typedef mln_fwd_piter(box1d) fwd_piter; typedef mln_bkd_piter(box1d) bkd_piter; + typedef line_piter_<point> line_piter; // End of warning. Index: trunk/milena/mln/core/image2d_b.hh =================================================================== --- trunk/milena/mln/core/image2d_b.hh (revision 1095) +++ trunk/milena/mln/core/image2d_b.hh (revision 1096) @@ -40,6 +40,7 @@ # include <mln/value/set.hh> # include <mln/fun/i2v/all.hh> +# include <mln/core/line_piter.hh> // FIXME: @@ -83,6 +84,7 @@ typedef dpoint2d dpoint; typedef mln_fwd_piter(box2d) fwd_piter; typedef mln_bkd_piter(box2d) bkd_piter; + typedef line_piter_<point> line_piter; // End of warning.