Ruby:Programming Tutorial

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Revision as of 00:36, 31 December 2007 by Andr3w (Talk | contribs) (An Example: drawing the French tricolour)

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An introduction to computer programming using Ruby. Comprising

An Example: drawing the French tricolour

You can create images using the GD2 library. The first tutorial Ruby:Flags looks at drawing flags of the world, from simple flags such as Libya to more complicated flags such as the Stars and Stripes of the USA.

With GD2 you can set the canvas color and draw a rectangle to create simple images.

Flag guide france.png

Notice that the blue rectangle has corners at (0,0) and (50,100) and has color [1,0,0]

g.color = image.palette.resolve Color[1.0, 0, 0]
g.rectangle(0,0,50,100,filled=true)



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