HelpSource/Classes/LastValue.schelp

   1 class:: LastValue
   2 summary:: Output the last value before the input changed
   3 related:: Classes/LeastChange, Classes/MostChange
   4 categories::  UGens>Triggers
   5
   6
   7 Description::
   8
   9 Output the last value before the input changed more than a threshhold.
  10
  11
  12 classmethods::
  13
  14 method::ar, kr
  15
  16 argument::in
  17
  18 The input signal.
  19
  20
  21 argument::diff
  22
  23 Difference threshhold.
  24
  25
  26 Examples::
  27
  28 code::
  29 d = { arg freq=440; SinOsc.ar(LastValue.ar(freq, 20), 0, 0.2) }.play;
  30
  31 d.set(\freq, 400);
  32 d.set(\freq, 200);
  33 d.set(\freq, 670);
  34 d.set(\freq, 680);
  35 d.set(\freq, 695);
  36 d.free;
  37 ::
  38
  39 Return the difference between currrent and the last changed:
  40 code::
  41 (
  42 d = { arg out=0, val=1;
  43         SinOsc.ar(
  44                         abs(val - LastValue.kr(val)) * 400 + 200,
  45                         0, 0.2
  46         )
  47 }.play;
  48 )
  49
  50 d.set(\val, 3);
  51 d.set(\val, 2);
  52 d.set(\val, 0.2);
  53 d.set(\val, 1);
  54 d.set(\val, 2);
  55 d.free;
  56 ::
  57