# style=r4: Rectangle IV

present=6
ranget=[-4:4]

a=2
b=$[$a/2]

ineq=abs(x+y)+abs(x-y) < $a,\
abs(x+y)-abs(x-y) < $a,\
-abs(x+y)+abs(x-y) < $a,\
abs(x+y)+abs(x-y) > $a,\
abs(x+y)-abs(x-y) > $a,\
-abs(x+y)+abs(x-y) > $a

sh=!shuffle 6
ineq=!item $sh of $ineq

plotf=t,$b;,t,-$b;,$b,t;,-$b,t;

plotf=$plotf\
$plotf\
$plotf\
$plotf

plotf=$plotf\
$plotf

