August 2012
Intermediate to advanced
540 pages
15h 10m
English
CHAPTER 1

Arcs – Organic Movement/Natural Motion
Very few living organisms are capable of moves that have a mechanical in and out or up and down precision.
The Illusion of Life: Disney Animation – Frank Thomas and Ollie Johnston
In this chapter, we’ll be looking at the basis of natural movement – arcs. Arcs are present in the majority of motions in the natural world; this is due to the effects of mass, weight, and inertia on objects, whether living or not. Think of an object traveling through the air, such as a ball being thrown; although the ball may follow a straighter line at the start of the throw, it will naturally follow more of an arc, ...