Data update

Task/Bitmap/Pluto/bitmap.pluto

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+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)