[linux-audio-user] RE: [linux-audio-dev] Does anyone have a working example ofSupercollider and SCUM GUI where slider or a button doesreal-time update on the synth - Linux-audio-user

18 May 2005

Many thanks for the reply!
Actually there is another, very odd reason why my example did not work. Even
if I used your working example, I found out the following odd behavior:
If I have a statement that does:
Out.ar(out, SinOsc.ar(freq, mul: 0.5))
Then it works.
If I have a statement that does:
Out.ar(out, SinOsc.ar(freq * 100, mul: 0.5))
This also works.
Now if I have:
Out.ar(out, SinOsc.ar(freq + 100, mul: 0.5))
This doesn't.
Naturally, one could always put something before this statement to fix this,
i.e.:
freq = freq + 100;
Out.ar(out, SinOsc.ar(freq, mul: 0.5))
But it is still interesting why the multiplication works and addition
doesn't.
Also, I noticed that on one of your SCUM example screenshots you are using
.connect method to connect something, yet I was unable to locate anything of
value in the documentation. I assume that this could be something similar to
the signal-slot idea in Qt and/or other Widget languages (but obviously I
may be completely off the mark), so I was wondering if you could please
provide an example for that? I would really appreciate it!
Finally, while I am on the roll with questions :-), do you mind also
mentioning what's the current status/roadmap of SCUM in terms of supporting
all stock Supercollider widgets, as I noticed that the SCUM widgets use
non-standard names and in addition I am not sure whether all widgets are as
of yet supported, all of which, at least in my experience, makes a number of
sc examples available on the net difficult if not impossible to run in
Linux. Please don't get me wrong, this is not to criticize as I am eternally
grateful for SCUM, I am simply curious as to what is the roadmap for the
project.
Many thanks to all for your help!
Best wishes,
Ivica Ico Bukvic, composer & multimedia sculptor
http://meowing.ccm.uc.edu/~ico/
...
  you'll have to split up the code:
 s = Server.local.boot;
 SynthDef(\testfest, { arg out=0, freq=440;
     Out.ar(out, SinOsc.ar(freq, mul: 0.5))
 }).send(s);
 z = Synth(\testfest);
 (
 w = SCUMWindow.new;
 w.title = "Slider example";
 w.initialSize = Size(20, 300);
 c = SCUMVBox(w);
 v = SCUMSlider(c, { |v|
     v.expand = 1;
     v.fill = 1;
     v.bgColor = Color.white;
     v.fgColor = Color.black;
     v.action = { z.set(\freq, v.value * 100 + 400) }
     v.doAction;
 });
 w.show;
 )
 hth,
 <sk>