
Theoretical and pragmatic approach to virtual reality 41
movement is monitored to automatically reach the desired place. The choice between
a 1D and a 2D moving walkway definitely has an impact on the visual immersion: if
the user really turns in all the horizontal directions, even the display has to be in all
these directions.
2.5.2.3 Orientation on tracks
The orientation poses a complicated problem. Experiments (Chance et al., 1998) show
that the real rotation of the person’s body around him/herself was relatively important
for his orientation (unlike translations). Will the user still be well oriented if a 1D
moving walkway is used? Tests should