local canvas = require "canvas"

-- Create a new canvas object: 400 pixels wide and 400 pixels high.
local c = canvas.new(400, 400)

-- Color the whole canvas blue.
c:fill(0xff0000)

-- Draw a red square in the middle.
for i = 1, 51 do
    for j = 1, 51 do
        c:set(174 + i, 174 + j, 0x0000ff)
    end
end

-- Print to the terminal the color (as an integer) of a pixel.
print(c:get(200, 200)) -- 255

-- Convert the canvas to a BMP image.
local image = c:tobmp()

-- Save the image to a file.
io.contents("mybmp.bmp", image)