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4. Control interfaces
We can define a 3D mouse (figure 7 ) by an interface that only allows the user to control three perpendicular translations and three perpendicular rotations in space. As already mentioned, a sensor can do the same, but a 3D mouse cannot measure the absolute location of the hand. The advantage of 3D mice is that they are technically easier to realize using voluntary hand movements. The consequence is generally a relatively low purchase price compared with location sensors.
Remember that, while it's not too difficult to "translate" any virtual object (cursor, part, etc.) in any direction using the three translation commands, cursor orientation is tricky. Rotations along three perpendicular axes are not commutative geometrical operations....
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Control interfaces
Conclusion
Bibliography
Software tools
VRPN: (Virtual-Reality Peripheral Network) is a library for interfacing any type of physical device (sensors, control interface, joystick, etc.) with the virtual reality system, all networked.
Websites
XSense
InterSense
ART GmbH
Nintendo
Events
(conferences, trade fairs, symposia, study days)
Show: Laval Virtual, held every year in Laval (France).
ISMAR: International Conference on Mixed and Augmented Reality
IEEE VR: International Conference on Virtual Reality.
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