Pspawner allows a routine to dynamically start and stop subpatterns.
| function |
The function defines a Routine that receives a Spawner as its sole argument. All control of subpatterns is through the spawner. Spawner responds to the messages:
NOTE: We should move the documentation of above methods to the Spawner helpfile... |
// example 1: a simple Pspawner
(
Pspawner({ | sp |
// parallel in-c'ish pulses will run throughout the example
sp.par(Pbind(*[ degree: [0,7], octave: 7, dur: 0.2, db: Pseq([-20, -24, -22, -24], inf)]) );
// scales in sequence with pauses
sp.seq(
Pbind(*[ degree: Pseq((0..7).mirror), dur: 0.2])
);
sp.wait(0.4);
sp.seq(
Ppar([
Pbind(*[ degree: Pseq((0..7).mirror), dur: 0.2, octave: 4]),
Pbind(*[ degree: Pseq((0..7).reverse.mirror), dur: 0.2])
])
);
sp.wait(3);
sp.seq(
Pbind(*[ degree: Pseq((0..7).mirror), dur: 0.2, mtranspose: (0,2..14)])
);
// scales overlaped at 0.4 second intervals
10.do {
sp.par(
Pbind(*[ degree: Pseq((0..7).mirror), dur: 0.2])
);
sp.wait(0.4)
};
sp.wait(1.6);
sp.suspendAll;
}).play
)
(
// example 2: create 6 streams at 4 second intervals
// then delete them in the order they were created
Pspawner({ | sp |
var streams, stream;
// start patterns, collect the resultant event streams
streams = [2, 3, 4, 6, 7, 8].collect { | i |
stream = sp.par(Pbind(*[
harmonic: i,
ctranspose: [0, 1, 3]/40,
octave: Pbrown(2,8,2), dur: 1/i, db: -30
]) );
sp.wait(4);
stream;
};
// now stop those streams one by one
streams.do { | s | sp.suspend(s); sp.wait(4) };
}).play
)
(
// example 3: define a Pspawner and use Pattern manipulations
p = Pspawner({ | sp |
var pat = Pbrown( -7, 7, 3);
sp.par(Pbind(*[octave: 5, degree: pat, dur: 1/4]) );
sp.wait(2);
sp.par(Pbind(*[octave: 6, degree: pat, dur: 1/8]) );
sp.wait(3);
sp.par(Pbind(*[octave: 7, degree: pat, dur: 1/6, db: -20]) );
sp.wait(4);
sp.par(Pbind(*[octave: 4, degree: pat, dur: 1/4]) );
sp.wait(8);
sp.suspendAll;
});
)
// play the basic patten
p.play;
(
// manipulate basic pattern with Pchain
Pchain(
Pbind(*[mtranspose: Pkey(\mtranspose) + Pstutter(8, Prand([0,[0,3,-2],[0,2,4]], inf)) ] ), //make some notes into triads
Pbind(*[ctranspose: Pwhite(-0.1, 0.1)]), //add random detuning to notes
Pbind(*[\scale, Scale.minor]), //alter the scale
Pn(Pseq([p, (type:\rest, dur: 1.0)]) ), //repeat the pattern after a 1 second pause
Pbind(*[
db: Pstep(Pseq([-10, -13, -13, -11, -13, -13], inf), 0.1) - 10,
mtranspose: Pstep(Pwhite(-7,7), Prand([5,4,2],inf) ) //random modal transposition
])
).play(protoEvent: Event.default)
)
// example 4: altering the contents of the Pspawner from separate code
(
a = Pspawner({ |sp |
c = sp; // store the Spawner in a global variable
100.do{ sp.wait(1) }
});
a.play;
)
( // c will not be valid until the Pspawner has run
b = c.par( // now start a pattern in spawner
Pbind(*[degree: Pseq((0..6) ++ (7..1), inf), dur: 0.2])
);
)
c.suspend(b) // we can suspend and resume the stream
c.par(b)
c.suspend(b)
(
b = c.par( // or just start up a new pattern
Pbind(*[degree: Pseq((0..6) ++ (7..1), inf), dur: 0.2])
);
)
// example 5: Spawner can be used directly in the manner of Pspawner.
// This allows external code to access to the spawner whether or not it has run
(
c = Spawner({ |sp |
100.do{ sp.wait(1) }
});
b = c.par( // now start a pattern in spawner
Pbind(*[degree: Pseq((0..6) ++ (7..1), inf), dur: 0.2])
);
c.play; // in this case, c is always valid
)
c.suspend(b) // we can suspend and resume the stream
c.par(b)
c.suspend(b)
(
b = c.par( // or just start up a new pattern
Pbind(*[degree: Pseq((0..6) ++ (7..1), inf), dur: 0.2])
);
)
(
Pspawner({ | sp |
(1..5).do { | i |
sp.par(Pbind(*[
octave: i + 2,
degree: Pwhite(0,7), dur: 1/i, db: -30
]) );
sp.wait(4);
};
sp.suspendAll;
}).play
)