Almost all animation today, whether cell on film or computer generated, is the result of a art/craft process that first establishes the look of characters and backgrounds in drawings, mood boards, and storyboards that are increasingly detailed. Main characters are often built in clay or other material. There may be hundreds of iterations of these before the characters, the worlds they inhabit and the story are 'fixed'.

The same processes are often used in live action movies. Many directors create complete hand-drawn storyboards showing every scene in the movie, including dialogue, before shooting. With a big enough budget, such as the Indiana Jones movies, the drawings are translated to fake life-size objects (e.g. fantasy planes) and remodelled locations.

The reason for these elaborate and expensive 'hand-made' processes in pre-production, is because (just look at the movie credits) so many people all have to be on the same page - including the producers. These processes also inform the final production budget.

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