(offset .(square ..(vfrac ...(vconcat ....(saturation-from-rgb .....(vabs [-2.0943 0.1 1.1272 -2.8108])) ....(length .....(vmax ......(vsqrt .......(vabs ........(vmax [2.3718 -1.8908] -0.3808))) 2.2906))))) .(radius pos))