do_circle - Calculates all the points in a circle. Allegro game programming library.

       Calculates all the points in a circle around point (x, y) with radius r, calling  the  supplied  function
       for  each one. This will be passed a copy of the bmp parameter, the x and y position, and a copy of the d
       parameter, so it is suitable for use with putpixel(). Example:

          void draw_explosion_ring(BITMAP *bmp, int x, int y, int d)
          {
             ...
          }

             do_circle(screen, SCREEN_W/2, SCREEN_H/2,
                       SCREEN_H/16, flame_color,
                       draw_explosion_ring);

       do_circle - Calculates all the points in a circle. Allegro game programming library.

do_ellipse(3alleg4), do_arc(3alleg4), do_line(3alleg4), circle(3alleg4), circlefill(3alleg4)

Allegro                                           version 4.4.3                               do_circle(3alleg4)

#include<allegro.h>voiddo_circle(BITMAP*bmp,intx,inty,intradius,intd,void(*proc)(BITMAP*bmp,intx,inty,intd));