Allegro 5 api
#include <allegro5/allegro_primitives.h> void al_draw_circle(float cx, float cy, float r, ALLEGRO_COLOR color, float thickness)
Draws an outlined circle.
Parameters:
cx, cy - Center of the circle
r - Radius of the circle
color - Color of the circle
thickness - Thickness of the circle, pass <= 0 to draw a hairline circle
al_draw_filled_circle(3alleg5), al_draw_ellipse(3alleg5)