PLrand dynamic scope Prand variant 


Part of: miSCellaneous


Inherits from: PL_ListPattern


Takes Symbol args for later reference by the Streams, which will read from variables in the Environments of their instantiation. See PLx suite.


See also: Prand, PLwrand, PLshuf, PLshufn, Event patterns and Functions, VarGui, VarGui shortcut builds



Creation / Class Methods


*new (list, repeats, envir)

Creates a new PLrand object.

list - Symbol or Prand list arg. 

If a Symbol is passed, list can be assigned to an envir variable later on.

This lists's elements can be dynamically replaced by Patterns or Streams.

repeats - Symbol or Prand repeats arg. Defaults to inf.

If a Symbol is passed, repeats can be assigned to an envir variable later on.

envir - Dictionary or one of the Symbols

\top, \t (topEnvironment), \current, \c (currentEnvironment).

Dictionary to be taken for variable reference. Defaults to \current.


Examples


(

s = Server.local;

Server.default = s;

s.boot;

)


// define Pattern and prepare Environments

(

p = Pbind(

\midinote, PLrand(\a),

\dur, 0.2

);


e = (a: (67..72));

f = (a: (77..82));

)


// start together or not, but sync anyway


e.use { x = p.play(quant: 0.2) };

f.use { y = p.play(quant: 0.2) };



// replace array elements ...


f.a[0] = 97;


e.a[0] = 96;



// ... or arrays 


f.a = (72, 72.5..77);


e.a = [60];


e.a = [Pseq([60, 47.5]) + [0, 5], [61, 65.5]];


x.stop;

y.stop;




//////////////////////



// placeholder may also get lists of event patterns


(

p = PLrand(\a);


~a = [ Pbind(

\midinote, Pwhite(60,65,3),

\dur, 0.2

),

Pbind(

\midinote, Pwhite(80,85,3),

\dur, 0.2

)

];


x = p.play;

)



// replace array element


(

~a[0] = Pbind(

\midinote, Pwhite(70,75,3) + [0, 5],

\dur, 0.15

);

)



// replace whole array


(

~a = [ Pbind(

\midinote, Pwhite(60,65,3),

\dur, 0.05

),

Pbind(

\midinote, Pwhite(70,90,2),

\dur, 0.25

)

];

)


x.stop;