use module random_scala(rows, columns, start, width, height) { line = mz_hamiltonian(rows, columns, start); leng = len(line); for(i = [0:leng - 1]) { p1 = line[i]; translate(p1) linear_extrude(height * i * 2 + height) square(width + 0.01, center = true); p2 = line[(i + 1) % leng]; translate(p1 + (p2 - p1) / 2) linear_extrude(height * (2 * i + 1) + height) square(width + 0.01, center = true); } } random_scala( rows = 2, columns = 3, start = [0, 0], width = .5, height = .25 );