DOKK / manpages / debian 10 / allegro5-doc / al_color_xyy.3alleg5.en
al_color_xyy(3alleg5) al_color_xyy(3alleg5)

al_color_xyy - Allegro 5 API

#include <allegro5/allegro_color.h>
ALLEGRO_COLOR al_color_xyy(float x, float y, float y2)
    

Return an ALLEGRO_COLOR(3alleg5) structure from xyY values. The Y component in the xyY color space is the same as the Y in XYZ.

However the x and y values are computed from XYZ like this:

x = X / (X + Y + Z)
y = Y / (X + Y + Z)
    

5.2.3

al_color_xyy_to_rgb(3alleg5), al_color_rgb_to_xyy(3alleg5)

Allegro reference manual