(vabs .(average [-1.6561 -1.7473 -2.0087] ..(checker ...(vabs ....(polar .....(vcos pos))) ...(lightness-from-rgb ....(x .....(vsqrt ......(scale .......(z spots) .......(average pos ........(v+ [-2.9067 -0.7805 -1.4678] pos) [-2.1901 0.4948 -1.6557 -0.9889]))))))))