[chuck-users] SndBuf Passing args to running functions

[herman verbaeten]

Thanks Michael, your example is very clarifying!


Verstuurd vanaf mijn iPad

Op 24 feb. 2020 om 05:14 heeft Michael Heuer <heuermh at gmail.com<mailto:heuermh at gmail.com>> het volgende geschreven:

Hello Herman,

I don't think you need to pass values to the sporked functions.

Scoping rules allow the sporked functions to access variables declared in their enclosing class, e.g.

0 => int centralpos;

spork ~ doSomething();
spork ~ doSomethingElse();

2::second => now;
42 => centralpos;

2::second => now;
0 => centralpos;

<<<"done">>>;

fun void doSomething()
{
  while (true)
  {
    if (centralpos == 42)
    {
      <<<"hello from doSomething!">>>;
    }
    250::ms => now;
  }
}

fun void doSomethingElse()
{
  while (true)
  {
    if (centralpos == 42)
    {
      <<<"hello from doSomethingElse!">>>;
    }
    500::ms => now;
  }
}

Do remember to advance time everywhere or things won't work correctly.

Hope this helps!

   michael


On Feb 21, 2020, at 2:11 AM, herman verbaeten <hverb54 at hotmail.com<mailto:hverb54 at hotmail.com>> wrote:

Hi,

I'm in big trouble. I'v been trying for a long time now to change an argument in a running function. As you can see in my script i set a certain central pos ("70000")to buf.pos  as a central position in my soundbuffer and i let my function LFOtoPOS circle around it.

Once the "spork" instruction has started the process i can't figure out how to addresss the argument "centralpos" to change it on the fly or by another function or parameter.  Some help please ...

Kind regards,

Herman
----------------------------------------------------------------------------------------------

 me.sourceDir() + "sound.wav" => string filename;
if( me.args() ) me.arg(0) => filename;

SndBuf buf => dac;

filename => buf.read;

1 => buf.pos;
.5 => buf.gain;

spork ~ LFOtoPOS(70000);

fun void LFOtoPOS(int centralpos)
{
     TriOsc lfo => blackhole;
     1 => lfo.freq;
     centralpos => buf.pos;
     while (true)
       {
       1::samp => now;
       (10000*lfo.last())$ int => buf.pos;
       }
}

// time loop
while( true )
{
   1000::ms => now;
}

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