al_color_xyy(3) al_color_xyy(3)

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(3) 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)


al_color_xyy_to_rgb(3), al_color_rgb_to_xyy(3)

Allegro reference manual