---
name: "al_draw_arc"
section: "3"
platform: "linux"
package: "allegro"
version: "5.2.11.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/al_draw_arc"
---

# al\_draw\_arc(3)

Allegro 5 API

## NAME

al\_draw\_arc - Allegro 5 API

## SYNOPSIS

-

  ```
  #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)
  ```

## DESCRIPTION

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

## SEE ALSO

[al\_calculate\_arc(3)](/al_calculate_arc/3.md), [al\_draw\_elliptical\_arc(3)](/al_draw_elliptical_arc/3.md)