al_draw_arc(1) Allegro 5 API


#include <allegro5/allegro_primitives.h>
void al_draw_arc(float cx, float cy, float r, float start_theta,
   float delta_theta, ALLEGRO_COLOR color, float thickness)


Draws an arc.


  • cx, cy - Center of the arc
  • r - Radius of the arc
  • color - Color of the arc
  • start_theta - The initial angle from which the arc is calculated in radians
  • delta_theta - Angular span of the arc in radians (pass a negative number to switch direction)
  • thickness - Thickness of the arc, pass <= 0 to draw hairline arc