do_circle(3alleg4) v7 man page | unix.com

do_circle(3alleg4)						  Allegro manual						do_circle(3alleg4)

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

Allegro 							   version 4.4.2						do_circle(3alleg4)