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class:: Plazy
summary:: instantiate new patterns from a function
related:: Classes/PlazyEnvir, Classes/PlazyEnvirN, Classes/Pfunc
categories:: Streams-Patterns-Events>Patterns>Function

description::

Plazy evaluates a function that returns a pattern and embeds it in a stream.

ClassMethods::

method::new

argument::func
A link::Classes/Function:: that returns a pattern or any other valid pattern input.

Examples::

code::
(
a = Plazy({
	var x, y;
	x = Array.series(rrand(2, 4), [1, 100].choose, 1);
	Pshuf(x,1);
});
x = Pn(a, inf).asStream;
30.do({ x.next.postln });
)


//Plazy used to produce a sequence of pitches:

(
SynthDef(\help_sinegrain,
	{ arg out=0, freq=440, sustain=0.05;
		var env;
		env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
		Out.ar(out, SinOsc.ar(freq, 0, env))
	}).add;
)

(
a = Plazy({
	var x, y;
	x = Array.series(rrand(2, 4), [1, 5].choose, 1);
	x.put(x.size.rand, 8+0.1.rand2);
	Pseq(x,1);
});
x = Pn(a, inf).asStream;

Routine({
	loop({
		Synth(\help_sinegrain, [\freq, (x.next*5+70).midicps]);
		0.13.wait;
	})
}).play;
)


// using event streams

(
a = Plazy({
	var x, y;
	x = Array.series(rrand(2, 4), [1, 5].choose, 1);
	x.put(x.size.rand, 8+0.1.rand2);
	Pbind(
		\instrument, \help_sinegrain,
		\dur, 0.12,
		\degree, Pseq(x, 2)
	)
});

Pn(a, inf).play;
)
::