A 5 meter square of area is sufficient for continuous movement in any direction. The tiles also incorporate lifts sufficient to replicate the feeling of climbing stairs… After you step up, the tile slowly descends, bringing you back to ground level in time to step up onto the next tile.
The original CirculaFloor system used magnets attached to the user’s shoes along with sensors in the tiles to figure out the direction of movement.
The CRVM , VR research center in sunny Marseille, south of France, had the greatest idea of publishing lots of the videos of their work (in french). (I’m sure you can guess what software they’re using..)
Here are some of them :
Slideshow : Technical aspects and main applications.
Navidget is a new interaction technique for camera positioning in 3D environments. (…) Navidget does not attempt to automatically estimate where and how the user wants to move. Instead, it provides good feedback and control for fast and easy interactive camera positioning. Navidget can also be useful for distant inspection when used with a preview window.
This new 3D User interface is totally based on 2D inputs. As a result, it is appropriate for a wide variety of visualization systems, from small handheld devices to large interactive displays. A user study on TabletPC shows that the usability of Navidget is very good for both expert and novice users. Apart from these tasks, the Navidget approach can be useful for further purposes such as collaborative work and animation.