(Of course if you need a value between 0 and 1 you have to clamp the value
returned by that function; I don't know how isosurface functions work but
I suppose that they do the clamping by themselves when calculating
pigments.)
--
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/
