softVol_ set a nodeproxy's vol conditionally

softVol_(param, val, within = 0.025, pause = true, lastVal, spec)

val - the volume value to set to 

within  the normalized range within which the set is accepted - default is 0.025

pause a flag whether to pause the nodeproxy when volume is 0. 

waits for 0.2 seconds for volume to go down first.

lastVal the previous value that the controller has set - can be 

spec a ControlSpec can be passed in. if nil, \amp.asSpec is used.

See also softSet, softPut.

Ndef(\test, { |freq=200| Splay.ar(SinOsc.ar(freq * Array.rand(12, 0.95, 1.05))) });

Ndef(\test).play(vol: 0.1);

// example of softSet, softSet which knows lastVal,

// softVol_ and softVol_ which knows lastVol:

(

w = Window("softVol", Rect(500, 200, 400, 240)).front;

w.view.addFlowLayout;

NdefGui(Ndef(\test), 2, w);

// same for volume - not too safe

EZSlider(w, 340@30, \softVol, \amp, { |sl| 

Ndef(\test).softVol_(sl.value, 0.05)

});

// safer

EZSlider(w, 340@30, \knowLastV, \amp, Routine { |sl| 

var newVal, lastVal; 

loop { 

newVal = sl.value;

Ndef(\test).softVol_(sl.value, 0.05, lastVal: lastVal);

lastVal = newVal;

\dummy.yield;

}

});

)