pngs 180 120 hw4iflt- 36
fps 12
div t f 18
sub s 2 t
cos r f

# Set a 3-by-2 aspect ratio, 90° field-of-view in Y, near plane at 0.1, far plane at 10
loadp 0.6666666666666 0 0 0  0 1 0 0  0 0 -1.02020202020202 -0.20202020202020202  0 0 -1 0

object tet world
iflt f 18
quaternion s 0 r t
else
quaternion t 0 r s
fi
position 0 0 -5
xyz -2 -2 -2
xyz -2  2  2
xyz  2 -2  2
xyz  2  2 -2
iflt f 18
color 1 0 0
trif 1 2 3
color 0 0.5 0
trif 2 3 4
else
fi
color 0.5 0 1
trif 3 4 1
color 1 1 0
trif 4 1 2