1. Interacting with Others Shared Experience Collaborative Interaction Work together Competition

2. Shared Experience The purpose of any communication medium is to share information and experiences with others. Movie and TV are often watched by a group. Many VR systems allow only one participant. Some VR systems allow additional viewers (e.g. the CAVE, figure 6-57)

3. What Can be Shared Ideas Virtual World Sharing control View Interacting with the virtual world Others Culture,Education,Emotion,etc.

4. Ways of Sharing One immersed participant with onlookers (HMD + external monitors) Two(or more) immersed participants Open display Multiperson cockpit The primary participant leads others to tour around the virtual world

5. Collaborative Interaction People need to work with others Two design engineers located hundreds of miles apart work in cyberspace. Car racing in the virtual world Group control (figure 6-60)

6. Communication among People Visual Aural Haptic Video teleconferencing equipment Avatars (figure 6-61(a)) Video information texture mapped onto a box (figure 6-61(b))

7. Synchronous and Asynchronous Communication Annotation Who, When, What, Documentation, etc. Visual, Aural, Haptic, etc. Information display Floor Control (i.e. who has the right to talk or act) World Congruity Appear what you done

8. Interacting with VR System (Metacommands) Commands that operate beneath the surface of the virtual world can be referred to as metacommands Load data Change global parameters