(vconcat .(offset ..(vcos ...(min-component ....(rotate .....(z [-0.4938 -0.6019]) .....(red-from-hsl ......(length pos))))) ..(scale [0.5007 1.4953 0.282] pos)) .(vcos ..(vcos ...(saturation-from-rgb ....(vsqrt [-0.7084 1.9275 2.6697])))))