(dot .(gradient ..(polar ...(vsin ....(vmod .....(max-component pos) .....(y pos))))) .(vcos ..(green-from-hsl ...(y ....(vdivide .....(vfrac ......(vmod [0.4988 -0.9583 -0.7934 -1.9005] .......(max-component pos))) .....(v* pos ......(max-component .......(radius ........(red-from-hsl [1.6058 1.1318 -0.8184 -1.3189])))))))))