draw_circle(x, y, r, outline);
|x||The x coordinate of the center of the circle.|
|y||The y coordinate of the center of the circle.|
|r||The circle's radius (length from its center to its edge)|
|outline||Whether the circle is drawn filled (false) or as a one pixel wide outline (true).|
With this function you can draw either an outline of a circle or a filled circle. You can define how precise the drawing is with the function draw_set_circle_precision.
draw_circle(100, 100, 50, true);
This will draw a one pixel wide white circle outline with a radius of 50 pixels.