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Tony White's Animator's Notebook by Tony White

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chapter 9

Arcs and Anticipation

Arcs

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Have you ever watched leaves falling from the trees? Have you noticed that they don’t drop straight down but tend float on ever-diminishing arcs, much like the animation I did for my film, Hokusai: An Animated Sketchbook?

An arc is the core of all movement. As I have said before, only a very fixed mechanical device moves in straight lines; everything else moves in curves or arcs in accordance with their mass or weight. Of course, if the leaves on a tree were round and made of solid iron, they would drop straight down like a stone, or apples. But they are not. They are made of thin, light, aerodynamic surfaces ...

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