noise(3G)							     noise(3G)

NAME    [Toc]    [Back]

     noise - filters valuator (mouse, cursor, and GL timer) motion

C SPECIFICATION    [Toc]    [Back]

     void noise(v, delta)
     Device v;
     short delta;

PARAMETERS    [Toc]    [Back]

     v	     expects a valuator. A valuator is a single-value input device.

     delta   expects the number	of units of change required before the
	     valuator v	can make a new queue entry.

DESCRIPTION    [Toc]    [Back]

     noise determines how often	queued valuators make entries in the event
     queue.  Some valuators are	noisy. For example, a device that is not
     moving can	still report small fluctuations	in value.  noise is used to
     set a lower limit on what constitutes a move.  That is, the value of a
     noisy valuator v must change by at	least delta before the motion is
     considered	significant. For example, noise(v,5) means that	valuator v
     must move at least	5 units	before it makes	a new queue entry.

     The default noise value for all valuators is 1, except for	the timer
     devices (TIMERn), for which it is 10000.  The frequency of	timer events
     is	returned by the	getgdesc inquiry GD_TIMERHZ.

SEE ALSO    [Toc]    [Back]

     getgdesc, qdevice,	setvaluator

NOTE    [Toc]    [Back]

     This routine is available only in immediate mode.


									PPPPaaaaggggeeee 1111