ABSTRACT
This chapter describes an analysis of possible techniques for the interaction of a person in a virtual environment. The actions that the person must complete according to the desired application can be divided into elementary tasks. We have called them Virtual Behavioural Primitives (VBPs). TheVBPs are the objectives of the functional Immersion and Interaction (I2) level. These elementary tasks will be performed by the person thanks to interaction techniques, which is the subject of this chapter. If it is generally easy to correctly define the intrinsic characteristics of VBPs after a detailed analysis of the functional I2 level, it can either be very easy or very complicated to conceive technical interaction solutions for implementing them. Therefore, this chapter is only about a contribution towards a vast problem exposed in the field of virtual reality.
