Forward of a old message for Andrew to illustrate a technique related to his
question.
Please note that this technique is squarely in the "powertools can maim"
category; it's very powerful, getting around some of ChucK's limitations but
it runs right next to the edge of where the VM will crash because of the
casting.
Kas.
---------- Forwarded message ----------
From: Kassen
Date: 21 January 2009 16:14
Subject: hotswapping UGens
Fellow ChucKists,
Inspired by Scott's explanation of casting I thought I'd try a new trick
that may be quite interesting for livecoding.
first run this file;
-----------------------------
new UGen @=> Foo.instrument;
public class Foo
{
static UGen @instrument;
spork ~attach();
fun void attach()
{
while(1)
{
if(!instrument.isConnectedTo( dac )) instrument => dac;
second => now;
}
}
}
Foo foo;
new Sitar @=> foo.instrument;
//your melody goes here
while(second => now) 1 => (foo.instrument $ Sitar).noteOn;
--------------------------------------------
Then run this to hot-swap the UGen while the original code runs;
--------------
new Shakers @=> Foo.instrument;
-----------------------
Sadly this does need that "attach" function as assignment breaks the link to
the dac. I'm not sure I feel that's desirable behaviour but at least we can
now hotswap UGens without crashing. I don't think I succeeded in that
before.
Yours,
Kas.
Kassen