[Olena-patches] 1012: Add a canvas to milena.

https://svn.lrde.epita.fr/svn/oln/trunk/milena Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Add a canvas to milena. * mln/level/median.hh (impl::median): Rename as... (impl::median_as_procedure): ...this. (impl::median_functor, impl::median): New. * mln/canvas: New. * mln/canvas/sbrowsing.hh: New. canvas/sbrowsing.hh | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++ level/median.hh | 89 +++++++++++++++++++++++++++++++++++++++++- 2 files changed, 198 insertions(+), 1 deletion(-) Index: mln/level/median.hh --- mln/level/median.hh (revision 1011) +++ mln/level/median.hh (working copy) @@ -37,6 +37,8 @@ # include <mln/core/window2d.hh> # include <mln/accu/median.hh> +# include <mln/canvas/sbrowsing.hh> + namespace mln { @@ -65,7 +67,7 @@ { template <typename I, typename W, typename O> - void median(const I& input, + void median_as_procedure(const I& input, const W& win, O& output) { @@ -146,6 +148,91 @@ } } + + template <typename I, typename W, typename O> + struct median_functor + { + // i/o + + const I& input; + const W& win; + O& output; + + // aux data + + mln_point(I) p; + window2d win_fp, win_fm, win_bp, win_bm, win_dp, win_dm; + mln_qiter(W) q_fp, q_fm, q_bp, q_bm, q_dp, q_dm; + accu::median_on<mln_value(I)> med; + + // ctor + + median_functor(I& input_, const W& win_, O& output_) + : + // i/o + input(exact(input_)), + win(exact(win_)), + output(exact(output_)), + // aux data + p(), + win_fp(win - (win + left)), win_fm((win + left) - win), + win_bp(win - (win + right)), win_bm((win + right) - win), + win_dp(win - (win + up)), win_dm((win + up) - win), + q_fp(win_fp, p), q_fm(win_fm, p), + q_bp(win_bp, p), q_bm(win_bm, p), + q_dp(win_dp, p), q_dm(win_dm, p) + { + } + + // parts + + void init() + { + med.init(); + mln_qiter(W) q(win, p); + for_all(q) if (input.has(q)) + med.take(input(q)); + } + + void down() + { + for_all(q_dm) if (input.has(q_dm)) + med.untake(input(q_dm)); + for_all(q_dp) if (input.has(q_dp)) + med.take(input(q_dp)); + output(p) = med; + } + + void fwd() + { + for_all(q_fm) if (input.has(q_fm)) + med.untake(input(q_fm)); + for_all(q_fp) if (input.has(q_fp)) + med.take(input(q_fp)); + output(p) = med; + } + + void bkd() + { + for_all(q_bm) if (input.has(q_bm)) + med.untake(input(q_bm)); + for_all(q_bp) if (input.has(q_bp)) + med.take(input(q_bp)); + output(p) = med; + } + + }; // end of median_functor + + + template <typename I, typename W, typename O> + void median(I& input, const W& win, O& output) + { + // FIXME: resize border! + impl::median_functor<I,W,O> f(input, win, output); + canvas::sbrowsing(f); + } + + } // end of namespace mln::level::impl Index: mln/canvas/sbrowsing.hh --- mln/canvas/sbrowsing.hh (revision 0) +++ mln/canvas/sbrowsing.hh (revision 0) @@ -0,0 +1,110 @@ +// 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_CANVAS_SBROWSING_HH +# define MLN_CANVAS_SBROWSING_HH + +/*! \file mln/canvas/sbrowsing.hh + * + * \brief Sbrowsing of an image. + */ + +# include <mln/core/dpoint2d.hh> // for "up" + + +namespace mln +{ + + namespace canvas + { + + /*! FIXME: Doc! + * + * + * F should be + * { + * input; p; --- attributes + * void init(); + * void down(); void fwd(); void bkd(); --- methods + * } + */ + template <typename F> + void sbrowsing(F& f); + + +# ifndef MLN_INCLUDE_ONLY + + template <typename F> + void sbrowsing(F& f) + { + mln_precondition(f.input.has_data()); + int + min_row = f.input.min_row(), max_row = f.input.max_row(), + min_col = f.input.min_col(), max_col = f.input.max_col(); + + // p + f.p = f.input.domain().pmin() + up; + int& row = f.p.row(); + int& col = f.p.col(); + + // initialization + f.init(); + + bool fwd = true; + for (row = min_row; row <= max_row; ++row) + { + // go down + f.down(); + + if (fwd) + // browse line fwd + while (col < max_col) + { + ++col; + f.fwd(); + } + else + // browse line bkd + while (col > min_col) + { + --col; + f.bkd(); + } + + // change browsing + fwd = ! fwd; + } + } + +# endif // ! MLN_INCLUDE_ONLY + + } // end of namespace mln::canvas + +} // end of namespace mln + + +#endif // ! MLN_CANVAS_SBROWSING_HH