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70 4. Building a Practical VR System
However, if the user of the desktop system also needs to experience feed-
back then a haptic output device is required. Most of the latest technological
advances of these devices has been as a direct result of the huge commercial
impact of computer games. What one would class as cheap force-feedback
devices (joysticks, mice, steering consoles, flight simulator yokes) are in high-
volume production and readily available. If building your own VR system,
take advantage of these devices, even to the extent of tailoring your software
development to match such devices. Microsoft’s DirectInput application pro-
gramm ...