Hilbert curve: Difference between revisions

-- Or's characters for ASCII line drawing

function charor(c1, c2)

local char={" ", " ", " ", "┌", " ", "│", "└", "├", " ", "┐", "─", "┬", "┘", "┤", "┴", "┼",}

local b1,b2=bits[c1] or 0,bits[c2] or 0