.\" Generated by the Allegro makedoc utility
.TH do_circle 3alleg4 "version 4.4.2" "Allegro" "Allegro manual"
.SH NAME
do_circle \- Calculates all the points in a circle. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B void do_circle(BITMAP *bmp, int x, int y, int radius, int d,
.B void (*proc)(BITMAP *bmp, int x, int y, int d));
.SH 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:

.nf
   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);
.fi

.SH SEE ALSO
.BR do_ellipse (3alleg4),
.BR do_arc (3alleg4),
.BR do_line (3alleg4),
.BR circle (3alleg4),
.BR circlefill (3alleg4)