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Man Pages
al_draw_arc(3) al_draw_arc(3)

al_draw_arc - 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.

Parameters:

•
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

al_calculate_arc(3), al_draw_elliptical_arc(3)
Allegro reference manual
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