do_circle

Langue: en

Version: version 4.2.2 (fedora - 05/07/09)

Section: 3 (Bibliothèques de fonctions)

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)