URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena/sandbox ChangeLog: 2008-05-07 Caroline Vigouroux &lt;vigour_c(a)epita.fr&gt; New red getter. * conv/getred.hh: New red getter for all color spaces. * conv/tored.hh: New function that takes a color as argument and return red part in rgb. --- getred.hh | 76 +++++++++++++++++++++++++++++++++++++++ tored.hh | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 194 insertions(+) Index: trunk/milena/sandbox/vigouroux/conv/getred.hh =================================================================== --- trunk/milena/sandbox/vigouroux/conv/getred.hh (revision 0) +++ trunk/milena/sandbox/vigouroux/conv/getred.hh (revision 1931) @@ -0,0 +1,76 @@ +#include <cmath> + +#include <mln/core/image_if_value.hh> +#include <mln/core/inplace.hh> +#include <mln/core/w_window2d_int.hh> +#include <mln/display/show.hh> +#include <mln/io/ppm/save.hh> +#include <mln/display/save_and_show.hh> +#include <mln/level/fill.hh> +#include <mln/value/int_u.hh> +#include <mln/math/round.hh> + +#include "../cmy/my_cmy.hh" +#include "../hsi/my_hsi.hh" +#include "../xyz/my_xyz.hh" +#include "../yiq/my_yiq.hh" +#include "../yuv/my_yuv.hh" +#include "torgb.hh" +#include "rgbto.hh" +#include "tored.hh" + +#ifndef MLN_RED_HH +# define MLN_RED_HH + +// namespace later +// { +// template <typename T> +// struct red; +// } + +namespace mln +{ + + namespace fun + { + + namespace v2v + { + template <typename T> + struct f_red_ : public Function_v2v< f_red_<T> > + { + typedef typename later::red<T>::result result; + + template <typename U> + result operator()(const U& color) const + { + value::rgb<8> rgb; + + rgb = f_to_red_< value::rgb<8> >(color); + + return later::red<T>::on(rgb); + } + }; + } + } +} + +// namespace later +// { +// template <typename T> +// struct red< mln::value::cmy_<T, T, T> > +// { +// typedef mln::value::cmy_<T, T, T> result; +// static result on(const mln::value::rgb<8>& rgb) +// { +// result cmy; + +// cmy.cyan() = 1 - rgb.red(); +// cmy.magenta() = 1 - rgb.green(); +// cmy.yellow() = 1 - rgb.blue(); + +// return cmy; +// } +// }; + +#endif // ! MLN_RGB_TO_CMY_HH Index: trunk/milena/sandbox/vigouroux/conv/tored.hh =================================================================== --- trunk/milena/sandbox/vigouroux/conv/tored.hh (revision 0) +++ trunk/milena/sandbox/vigouroux/conv/tored.hh (revision 1931) @@ -0,0 +1,118 @@ +#include <cmath> + +#include <mln/core/image_if_value.hh> +#include <mln/core/inplace.hh> +#include <mln/core/w_window2d_int.hh> +#include <mln/display/show.hh> +#include <mln/io/ppm/save.hh> +#include <mln/display/save_and_show.hh> +#include <mln/level/fill.hh> +#include <mln/value/int_u.hh> +#include <mln/math/round.hh> + +#include "../cmy/my_cmy.hh" +#include "../hsi/my_hsi.hh" +#include "../xyz/my_xyz.hh" +#include "../yiq/my_yiq.hh" +#include "../yuv/my_yuv.hh" + +#ifndef MLN_TO_RED_HH +# define MLN_TO_RED_HH + +namespace later +{ + template <typename T> + struct red; +} + +namespace mln +{ + + namespace fun + { + + namespace v2v + { + template <typename T_rgb> + struct f_to_red_ : public Function_v2v< f_to_red_<T_rgb> > + { + typedef T_rgb result; + + template <typename T> + T_rgb operator()(const value::cmy_<T, T, T>& color) const + { + int red; + + red = int(1 - color.cyan()); + T_rgb rgb(red, 0, 0); + + return rgb; + } + + template <typename T> + T_rgb operator()(const value::hsi_<T, T, T>& color) const + { + typedef typename T_rgb::red_t red_t; + + static math::round<red_t> to_r; + + static const float + sqrt3_3 = std::sqrt(3) / 3, + inv_sqrt6 = 1 / std::sqrt(6), + inv_sqrt2 = 1 / std::sqrt(2); + + float + h = color.hue() / 180.0 * 3.1415, + alpha = color.sat() * std::cos(h), + beta = color.sat() * std::sin(h); + + red_t r = sqrt3_3 * color.inty() + 2 * inv_sqrt6 * beta; + + T_rgb rgb(r, 0, 0); + + return rgb; + } + + template <typename T> + T_rgb operator()(const value::xyz_<T, T, T>& color) const + { + int r; + + r = int(2.365 * color.x() - 0.896 * color.y() - 0.468 * color.z()); + + struct value::rgb<8> rgb(r, 0, 0); + + return rgb; + } + + template <typename T> + T_rgb operator()(const value::yuv_<T, T, T>& color) const + { + int r; + + r = int(color.y() + 1.13983 * color.v()); + + struct value::rgb<8> rgb(r, 0, 0); + + return (rgb); + } + + template <typename T> + T_rgb operator()(const value::yiq_<T, T, T>& color) const + { + int r; + + r = int(0.87 * color.y() + 1.3223 * color.i() + 0.5628 * color.q()); + + struct value::rgb<8> rgb(r, 0, 0); + + return rgb; + } + + + }; + } + } +} + +#endif // ! MLN_TO_RED_HH