tess 4
f 0.3 0.3 0.3 1 1
# a centered sphere
s 0 0 0 5
s 20 0 0 5
s 40 0 0 5
s 60 0 0 5
f 1 1 1 1 1
s -5 0 0 3
s 0 5 0 3
s 0 -5 0 3