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do_circle(3)                    Allegro manual                    do_circle(3)

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

SYNOPSIS
       #include <allegro.h>

       void do_circle(BITMAP *bmp, int x, int y, int radius, int d, void
       (*proc)(BITMAP *bmp, int x, int y, int d));

DESCRIPTION
       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);

SEE ALSO
       do_ellipse(3), do_arc(3), do_line(3), circle(3), circlefill(3)

Allegro                          version 4.4.2                    do_circle(3)