Input Notes for EQUIP

Chris Greenhalgh 9 April 2001

VR Juggler
==========

Abstract types
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VRJuggler defines the following 'device abilties':

	const unsigned int DEVICE_POSITION = 1;
	const unsigned int DEVICE_GESTURE  = 2;
	const unsigned int DEVICE_DIGITAL  = 4;
	const unsigned int DEVICE_ANALOG   = 8;
	const unsigned int DEVICE_GLOVE    = 16;
	const unsigned int DEVICE_KEYBOARD = 32;

The 'digital' subclass is an array of 0 or more bits, each of which
may be 'OFF' (0) or 'ON' (1). 'TOGGLE_ON' (2) and 'TOGGLE_OFF' (3) are
also defined for internal use. -1 indicates out of range.

The 'analog' subclass is an array of 0 or more ints (apparently). With
some newer facility to normalize to float 0.0-1.0f.

The 'keyboard' subclass includes alphanumerics, shift, alt, ctl,
 arrow keys, mouse buttons and relative mouse movements (pos/neg, x/y)
as if keys. It returns the number of time a given key has been pressed
since last update, i.e. you have to query for keys individually, and
there is no single order of pressed keys as for text input.

There is a custom glove interface - finger wrist angles/bending.

The 'position' input subclass is an array of 3D matrices, including
last update time.

The 'gesture' subclass returns an integer id for the current 
gesture, and includes operations for training and for saving and
loading gesture data. I suspect that this is momentary rather
than time series, e.g. a particular glove pose.

The 'speech' subclass appears to interface to a piece of dragon
dictation software over the network, and returns a sequence of words.

Concrete types
--------------

VR Juggler appears to support the following at present:
 
Tracker plus multi-function devices:
	CAVE trackd tracker demon
	Intersense IS-300, IS-600, IS-900 and InterTrax
	Diverse Toolkit	

Multi-function devices:
	Immersion Box - 4 digital, 4 analog

Tracker:
	Motionstar
	Flock of birds
	Intersense (see above)