NAME

noise − filters valuator motion

SPECIFICATION

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

FORTRAN
subroutine noise(v, delta)
integer*4 v, delta

Pascal
procedure noise(v: Device; delta: longint);

DESCRIPTION

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 can 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. 

SEE ALSO

setvaluator IRIS Graphics Programming, Section 7.3, The Event Queue

NOTE

This routine is available only in immediate mode. 

Version 2.5  —  April 22, 1987