Interacting with Augmented Floor Surfaces - Human Walking in Virtual Environments - page 386

Fig. 17.14 Four button arrows corresponding to panning in the cardinal directions and a slider for

zoom

Fig. 17.15 The first foot to remain still establishes the pivot point, surrounded by a blue circle .The
second foot then specifies the vector, relative to the pivot, for panning

to affect the application state in a way that is not directly or instantaneously linked to
changes in the user interface. In the geospatial data navigation application, short body
gestures can be used in conjunctionwith the control actions described above to control
zooming. A curt “crouching” gesture zooms the map in, while a curt “jumping”
gesture (raised onto the toes) zooms out. Since such gestures have distinctive normal-
force profiles trough time they can be matched to a reference signal.