Clock Display

imgWidth = 71
imgHeight = 33
if fs.exists("clocks") then
  imgs = paintutils.loadImage("clocks")
else
  shell.run("pastebin get NkF2vfMN clocks")
  --Assumes you have http enabled
  imgs = paintutils.loadImage("clocks")
end
local function readLines(sPath)
  local file = fs.open(sPath, "r")
  if file then
        local tLines = {}
        local sLine = file.readLine()
        while sLine do
          table.insert(tLines, sLine)
          sLine = file.readLine()
        end
        file.close()
        return tLines
  end
  return nil
end

function drawImg(index, x,y, dark)
index = index - 1
curY = 0
for yy  = index*imgHeight+1, (index+1)*imgHeight do
  for xx = 1, imgWidth  do
    color = imgs[yy][xx]
    if not dark then
      if color == '0' then
        color = 'F'
      end
      if color == 'b' then
        color = '0'
      end
    end
    paintutils.drawPixel(x+xx-1, y+curY, color)
  end
  curY = curY + 1
end
end
mon = peripheral.wrap("back")
term.redirect(mon)
term.clear()


function toint(n)
    local s = tostring(n)
    local i, j = s:find('%.')
    if i then
        return tonumber(s:sub(1, i-1))
    else
        return n
    end
end
function main()
  while true do
    local time = os.time()
    local hour = toint(time)
    if hour > 12 then
      hour = hour - 12
    end
    drawImg(hour, 1,1, hour <= 7 or hour >= 19)
    os.sleep(4)
  end
end

main()