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)