49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* post_pro_recolor.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: ntrahy <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2016/11/23 04:57:51 by ntrahy #+# #+# */
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/* Updated: 2016/11/23 04:57:53 by ntrahy ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "rt.h"
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int img_b_n_w(t_color c)
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{
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t_color new;
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unsigned int k;
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k = (c.b * 0.07 + c.g * 0.72 + c.r * 0.21);
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new.b = k;
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new.g = k;
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new.r = k;
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return (get_color(new));
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}
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int img_sepia(t_color c)
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{
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t_color new;
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if ((new.r = 0.393 * c.r + 0.769 * c.g + 0.189 * c.b) > 255)
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new.r = 255;
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if ((new.g = 0.349 * c.r + 0.686 * c.g + 0.168 * c.b) > 255)
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new.g = 255;
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if ((new.b = 0.272 * c.r + 0.534 * c.g + 0.131 * c.b) > 255)
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new.b = 255;
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return (get_color(new));
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}
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int img_negative(t_color c)
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{
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t_color new;
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new.b = 255 - c.b;
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new.g = 255 - c.g;
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new.r = 255 - c.r;
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return (get_color(new));
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}
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