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 Forum index » DIY Hardware and Software » ChucK programming language
How to put Ugen object to array?
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Phloxs



Joined: Jan 24, 2014
Posts: 17
Location: Russia

PostPosted: Thu Oct 01, 2015 5:57 am    Post subject: How to put Ugen object to array? Reply with quote  Mark this post and the followings unread

Hello.

I want to make some kind of array with links to objects (or objects) in order for I'll control Ugens by adress to this array's index.

How can I do it?

At example:

Code:
SinOsc sin => dac;
SawOsc saw => dac;

[sin, saw] @=> int instList[];

440 => int instList[0];
220 => int instList[1];


Of course I get an error "cannot assign '@=>' on types 'Osc[]' @=> 'int[]'"
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brkl



Joined: Aug 21, 2015
Posts: 6
Location: Finland

PostPosted: Fri Oct 02, 2015 2:53 am    Post subject: Reply with quote  Mark this post and the followings unread

I think you can have an array of a single type of object, not different ones. I mean, you can make an array of UGens and assign SinOsc to it, but it won't work. You won't be able to use any feature of SinOsc apart from the ones that are part of UGen.

Oh, I don't know, maybe you could try the Chubgraph feature and make a class that has a setting that determines what kind of UGen it is. I mean, you could give it a shot.
http://chuck.stanford.edu/extend/#chubgraphs
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Phloxs



Joined: Jan 24, 2014
Posts: 17
Location: Russia

PostPosted: Fri Jul 08, 2016 5:52 am    Post subject: Reply with quote  Mark this post and the followings unread

This solution work with StkInstrument class so I guess it should work with Ugens.

Code:

Mandolin m;
Sitar s;
Shakers sh;

[m, s, sh]@=> StkInstrument instruments[];

for (int i; i instruments.size(); i++)
{
    Math.random2(220, 440) => instruments[i].freq;
    1 => instruments[i].noteOn;
    .5::second => now;
    1 => instruments[i].noteOff;
}

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95



Joined: Nov 01, 2016
Posts: 1
Location: los angeles

PostPosted: Tue Nov 01, 2016 7:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

brkl! your suggestion totally worked for me.
brkl wrote:

Oh, I don't know, maybe you could try the Chubgraph feature and make a class that has a setting that determines what kind of UGen it is. I mean, you could give it a shot.
http://chuck.stanford.edu/extend/#chubgraphs

i'm making a synth thing with different kinds of oscillators, and wanted to put them in an array. i had tried with a ugen array, but as mentioned, because ugen is so limited, it won't let you do things like change frequency.

BUT THIS IS GREAT

a little sample i made to test it out:
Code:

class Oski extends Chubgraph{

   ADSR e[4];

   SinOsc si => e[0] => dac;   
   SqrOsc sq => e[1] => dac;
   TriOsc tr => e[2] => dac;
   SawOsc sa => e[3] => dac;

   fun void freq(int voice, int value){

      if (voice == 0){value => si.freq;}
      if (voice == 1){value => sq.freq;}
      if (voice == 2){value => tr.freq;}
      if (voice == 3){value => sa.freq;}
   }

   fun void keyOn(int voice){
      
      e[voice].keyOn();
   }

   fun void keyOff(int voice){
      
      e[voice].keyOff();
   }

   fun void releaseTime(int voice, dur d){

      e[voice].releaseTime(d);
   }
}

Oski o => dac;

o.freq(0, 1000);

o.releaseTime(0, .2::second);

o.keyOn(0);

1::second => now;

o.keyOff(0);

1::second => now;

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