Chapter 21

A Model of the Mode and Flow of a Gesture System

Keywords

Model of a gesture language, stages of a gesture, tool for design of gestures

I’m just preparing my impromptu remarks.

—Winston Churchill

Description

Building a gestural system requires the development and refinement of a language. That language must be simple to understand, internally consistent, and predictable. In previous chapters, we described the state model of input devices and the stages of a gesture. Like Sir Winston’s “impromptu” remarks, the goal is, in essence, to not feel designed. In this chapter, we describe a method of representing a gestural language that combines these two ideas. We introduce the mode and flow model of a gesture language. This model allows ...

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