bionic (3) do_ellipse.3alleg4.gz

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)