[Olena-patches] milena r1295: Add convert/to_tiles.hh

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena ChangeLog: 2007-10-10 Guillaume Duhamel &lt;guillaume.duhamel(a)lrde.epita.fr&gt; Add convert/to_tiles.hh. * to_tiles.hh: Create an image from vector of image. --- to_tiles.hh | 97 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) Index: trunk/milena/mln/convert/to_tiles.hh =================================================================== --- trunk/milena/mln/convert/to_tiles.hh (revision 0) +++ trunk/milena/mln/convert/to_tiles.hh (revision 1295) @@ -0,0 +1,97 @@ +// 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_CONVERT_TO_TILES_HH +# define MLN_CONVERT_TO_TILES_HH + +/*! \file mln/convert/to_tiles.hh + * + * \brief Conversion of a vector of image2d into a tiled image with ratio. + */ + +# include <mln/core/translate_image.hh> +# include <mln/level/paste.hh> +# include <mln/geom/nrows.hh> +# include <mln/geom/ncols.hh> + +namespace mln +{ + + namespace convert + { + + /// FIXME : Run only for image2d + /// Convert a vector of image2d into a tiled image with ratio. + template <typename I> + I to_tiles (std::vector<I>& vec, float ratio); + +# ifndef MLN_INCLUDE_ONLY + + template <typename I> + I + to_tiles (std::vector<I>& vec, float ratio) + { + /// Test if vec is not empty. + mln_precondition(!vec.empty ()); + + unsigned size = vec.size (); + unsigned nrows = geom::nrows(vec[0]); + unsigned ncols = geom::ncols(vec[0]); + + /// Compute output size. + int size_c = (int) ceil(sqrt(size * ratio)); + int size_r = (int) ceil(sqrt(size / ratio)); + + I output (size_r * nrows, size_c * ncols); + + for (unsigned i = 0; i < size; ++i) + { + /// Check if current image has good dimension. + mln_precondition(geom::nrows(vec[i]) == nrows); + mln_precondition(geom::ncols(vec[i]) == ncols); + + /// Compute the delta point of translation. + dpoint2d dp = make::dpoint2d(i / size_c * nrows, i % size_c * ncols); + + /// Convert current image in translate image with its delta point. + translate_image<I> tr_ima (vec[i], dp); + + /// Paste translated image into output. + level::paste (tr_ima, output); + } + + return output; + } + +# endif // ! MLN_INCLUDE_ONLY + + } // end of namespace mln::convert + +} // end of namespace mln + + +#endif // ! MLN_CONVERT_TO_TILES_HH