NAME

       do_ellipse - Calculates all the points in an ellipse. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       void  do_ellipse(BITMAP  *bmp,  int x, int y, int rx, ry, int d, void (*proc)(BITMAP *bmp,
       int x, int y, int d));

DESCRIPTION

       Calculates all the points in an ellipse around point (x, y) with radius rx and ry, 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_ellipse(screen, SCREEN_W/2, SCREEN_H/2,
                       SCREEN_H/16, SCREEN_H/32, flame_color,
                       draw_explosion_ring);

SEE ALSO

       do_circle(3alleg4),       do_arc(3alleg4),       do_line(3alleg4),       ellipse(3alleg4),
       ellipsefill(3alleg4)