[Olena-patches] 4149: Fix io magick save.

https://svn.lrde.epita.fr/svn/oln/trunk Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Fix io magick save. * milena/mln/io/magick/save.hh (get_colo): Magic fix. * milena/tests/io/magick/save.cc: Update. mln/io/magick/save.hh | 10 +++++----- tests/io/magick/save.cc | 10 ++++++++-- 2 files changed, 13 insertions(+), 7 deletions(-) Index: milena/mln/io/magick/save.hh --- milena/mln/io/magick/save.hh (revision 4148) +++ milena/mln/io/magick/save.hh (working copy) @@ -31,7 +31,7 @@ /// Define a function which saves an image of kind magick with /// given path. /// -/// FIXME: there seems to be roundness errors while computing rgb values. +/// \todo At the moment it works; is it a miracle? # include <mln/core/image/image2d.hh> # include <mln/metal/equal.hh> @@ -71,15 +71,15 @@ inline Magick::Color get_color(const value::int_u8& value) { - return Magick::ColorGray(value / (double)256.0f); + return Magick::ColorGray(256 - value); } inline Magick::Color get_color(const value::rgb8& value) { - return Magick::ColorRGB(value.red() / (double)256.0f, - value.green() / (double)256.0f, - value.blue() / (double)256.0f); + return Magick::ColorRGB(256 - value.red(), + 256 - value.green(), + 256 - value.blue()); } template <typename I> Index: milena/tests/io/magick/save.cc --- milena/tests/io/magick/save.cc (revision 4148) +++ milena/tests/io/magick/save.cc (working copy) @@ -27,24 +27,30 @@ #include <mln/io/magick/load.hh> #include <mln/io/magick/save.hh> #include <mln/io/ppm/load.hh> - +#include <mln/io/ppm/save.hh> #include <mln/data/compare.hh> +#include "tests/data.hh" #include <mln/io/magick/load.hh> -#include "tests/data.hh" int main() { using namespace mln; + point2d p(0,0); + image2d<value::rgb8> lena_mln; io::ppm::load(lena_mln, MLN_IMG_DIR "/tiny.ppm"); + value::rgb8 c = lena_mln(p); io::magick::save(lena_mln, "tiny.png"); image2d<value::rgb8> lena_im; io::magick::load(lena_im, "tiny.png"); + mln_assertion(lena_im(p) == c); + + io::ppm::save(lena_im, "tiny.ppm"); mln_assertion(lena_im.domain() == lena_mln.domain()); mln_assertion(lena_im == lena_mln);