[nycbug-talk] nifty(1)
Eitan Adler
lists at eitanadler.com
Thu Dec 15 01:00:08 EST 2011
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
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