CHAPTER 6

Interacting with the Virtual World

Interaction with a virtual world is a key ingredient of a VR experience. Indeed, if the display of a virtual world does not respond at least to a user’s physical movement, then it is not considered virtual reality.

According to Webster’s [1989], interaction is “reciprocal action or influence.” Thus, interacting with a computer-generated environment occurs when user inputs are responded to by corresponding actions of the computer. How we interact with a computer is obviously the result of how the user interface (UI) is designed. In fact, our communion with the computer through the interface is so predominant, the UI is how we generally envision the computer itself. (Buxton [1995] analyzed how people’s ...

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