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(3alleg), do_arc(3alleg), do_line(3alleg), circle(3alleg),
circlefill(3alleg)