[nycbug-talk] nifty(1)

[Eitan Adler]

This is a fun one:

% function try_this_in_zsh {
 local lines columns colour a b p q i pnew
 ((columns=COLUMNS-1, lines=LINES-1, colour=0))
 for ((b=-1.5; b<=1.5; b+=3.0/lines)) do
 for ((a=-2.0; a<=1; a+=3.0/columns)) do
 for ((p=0.0, q=0.0, i=0; p*p+q*q < 4 && i < 32; i++)) do
 ((pnew=p*p-q*q+a, q=2*p*q+b, p=pnew))
 done
 ((colour=(i/4)%8))
 echo -n "\\e[4${colour}m "
 done
 echo
 done
 }
-- 
Eitan Adler