Getting Input from Devices

Getting Input from Devices
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Getting input from the hardware devices is conceptually the same, but the implementations are quite different between the CAVElibs™ software and VR Juggler.

In CAVElibs™

To get tracking information, the following functions are used:

CAVEGetPosition(id, pos)
CAVEGetOrientation(id, orient)
CAVEGetVector(id, vec)
CAVEGetSensorPosition(sensor, coords, pos)
CAVEGetSensorOrientation(sensor, coords, orient)
CAVEGetSensorVector(sensor, id, vec)

For button input, the following macros are used:

CAVEBUTTON1, CAVEBUTTON2, CAVEBUTTON3, CAVEBUTTON4, CAVE_JOYSTICK_X, and CAVE_JOYSTICK_Y
CAVEButtonChange()

In VR Juggler

To get device input, use the type-specific instantiations of gadget::DeviceInterface<T>. They include the following:

gadget::PositionInterface for trackers and other positional devices
gadget::DigitalInterface for buttons and other on/off devices
gadget::AnalogInterface for potentiometers and other multi-range data devices
gadget::KeyboardMouseInterface for keyboard and mouse input

For more information about the VR Juggler device interfaces, refer to the section called “Device Proxies and Device Interfaces”. A tutorial on getting device input in VR Juggler applications can be found in the section called “Getting Input”.