Dome

local function distSq(x, y, z)
  return x * x + y * y + z * z
end

local function build()
  while turtle.getItemCount(1) <= 1 do
    if not supply.resupply(1) then
      os.sleep(10)
    end
  end
  turtle.placeDown()
end

local quarters = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}, {1, 0}}
os.loadAPI("utils")
supply = peripheral.wrap("right")
args = {...}
if #args < 1 then os.exit() end
radius = args[1] + 0
rmax = (radius + .5) * (radius + .5)
rmin = (radius - .5) * (radius - .5)
for height = turtle.y, radius do
  utils.goto(turtle.x, height, turtle.z)
  for i = 1, 4 do
    local max = radius
    for over = 0, radius do
      out = max
      while (out > 0) and distSq(out, height, over) >= rmax do
        out = out - 1
      end
      max = out
      while (out > 0) and distSq(out, height, over) > rmin do
        utils.goto(quarters[i][1] * out +
                   quarters[i+1][1] * over,
                   height,
                   quarters[i][2] * out +
                   quarters[i+1][2] * over)
        build()
        out = out - 1
      end
    end
  end
end