Etoys can accept input from a camera. It creates a series of still pictures (JPGs) from the movie.
This is a great example of an animation created with jpg files. It is also well explained in the "About" tab.
Simulation are one of the bases of computing and here it is demonstrated how a series of images shown in rapid succession becomes a movie.
This, with its companion, is a great way to learn how to do animations with Etoys.
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