NAME¶
al_color_lch - Allegro 5 API
SYNOPSIS¶
-
#include <allegro5/allegro_color.h>
ALLEGRO_COLOR al_color_lch(float l, float c, float h)
DESCRIPTION¶
Return an ALLEGRO_COLOR(3alleg5) structure from CIE LCH values. LCH colors are
very similar to HSL, with the same meaning of L and H and C corresponding to
S. However LCH is more visually uniform. Furthermore, this function expects
the angle for H in radians and not in degree.
The CIE LCH color space is a cylindrical representation of the
L*a*b* color space. The L component is the same and C and H are computed
like this:
-
C = sqrt(a * a + b * b)
H = atan2(b, a)
SEE ALSO¶
al_color_lch_to_rgb(3alleg5), al_color_rgb_to_lch(3alleg5)