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extMethods.sc
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extMethods.sc
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/*
extMethods.sc
External Methods that implement some of the behavior for Repetition.sc
*/
+ Routine {
nextRP {
|inval|
var value = this.value(inval), tmp;
// then we add the amplitude. if the `symbol` has `@`, will sum `0.25`
value = value.applyAccent;
// if the `symbol` has `'`, will shift 1 octave up. if the 'symbol' has `,` will shift 1 octave down.
// also we need to inject the typeOf to calculate later the octave we're on.
value = value.applyOctave;
// for convenience, let's add the "type of" Event we'll play
// ie: percussion, chord, note
value = value.applyTypeOf;
// now that everything is it's right place, we'll clean the symbols to
// convert each Event to a proper MIDI note based on `typeOf` and the `symbol`.
value = value.applyReNote;
^value;
}
player {
|... args|
^Pchain(Prepetition(), Pbind(\beat, Ptime(inf)), Pbind(*args), RePevent(this));
}
}
+ Object {
nextNRP {
|n, inval|
^Array.fill(n, { this.nextRP(inval) });
}
}
+ String {
parseRepetition {
var regexp = "([\\w\\.\\|\\/\\'\\,!?@?\\+?(\\*\d+)? ]+)";
^this
.asString
.findRegexp(regexp)
.collect(_[1])
.collect(_.stripWhiteSpace)
.collect(_.replace("/", ""))
.uniq
.collect(_.flat)
.collect(_.asSymbol)
.collect(_.maybeRepeat)
.collect(_.maybeSplit)
.collect(_.parseEvents)
.pop
.applyIndex
;
}
asRepetitionSequence {
^this
.parseRepetition
.pseq(inf)
;
}
asRepetitionStream {
^this
.asRepetitionSequence
.asStream
;
}
classExists {
^Class.allClasses.collect(_.asString).indexOfEqual(this).notNil;
}
// requires `Bjorklund` Quark.
bjorklund {
|k, n, rotate=0|
var hit = Pseq(this.split($ ), inf).asStream;
^Bjorklund(k, n)
.rotate(rotate)
.collect { |p| if (p.asBoolean) { hit.next } { \r } }
.join(" ")
;
}
maybeCleanUp {
^this
.replace("@", "")
.replace(",", "")
.replace("'", "")
;
}
createSingleEvent {
|dur=1|
var item = this;
if (item.contains("+")) {
item = item.split($+);
dur = (dur/item.size).dup(item.size);
} {
if (item.contains("|")) {
item = item.split($|);
}
};
if (dur.isKindOf(Array)) {
^dur.collect {
|d, i|
(dur: d, symbol: item[i]);
}.flat;
} {
^(dur: dur, symbol: item);
}
}
/*
Based on Steven Yi's Hex Beats.
http://kunstmusik.com/2017/10/20/hex-beats/
*/
hexbeat {
// reject anything ouside hex valid numbers
^this.asList.reject{
|chr|
"0123456789abcdef".asList.indexOfEqual(chr).isNil;
}
.collect{
|hex|
// convert each character/number to a 4bits representation
hex.asString.asList.collect{
|h|
h.digit.asBinaryDigits(4)
};
}.flat;
}
shuffle { ^this.split($ ).scramble.join(" "); }
everyN {
|times, callback|
^this
.replace("/","").split($ ) // individual notes
.reject { |x| x.size == 0 } // reject anything that's not a note
.collect{
|item, idx|
if (idx % times == 0) {
callback.(item);
} {
item
}
}
.join(" ")
;
}
probability {
|chance, callback|
^this
.replace("/","").split($ ) // individual notes
.reject { |x| x.size == 0 } // reject anything that's not a note
.collect{
|item, idx|
if (chance.coin) {
callback.(item);
} {
item
}
}
.join(" ")
;
}
rarely { |callback| ^this.probability(0.25, callback); }
sometimes { |callback| ^this.probability(0.5, callback); }
regularly { |callback| ^this.probability(0.75, callback); }
always { |callback| ^this.probability(1.0, callback); }
<< {
|notes|
var stream = Pseq(notes.split($ ), inf).asStream;
^this
.replace("/ ", "")
.split($ )
.collect { |p| if (p.asInt.asBoolean) { stream.next.asString } { "r" } }
.join(" ")
;
}
invert {
^this
.replace("/ ", "")
.replace("1", "x")
.replace("0", "1")
.replace("x", "0")
;
}
rev {
^this
.replace("/ ", "")
.split($ )
.collect(_.stripWhiteSpace)
.reject{ |x| x == "" }
.reverse
.join(" ")
;
}
// player short
pbind {
|... args|
^this
.asRepetitionStream
.player(*args);
}
<@> {
|... args|
^this
.asRepetitionStream
.player(*args.at(0));
}
}
+ Symbol {
maybeRepeat {
var item = this.asString;
if (item.contains("!")) {
item = item.split($ ).collect{
|i|
if (i.contains("!")) {
i.replace("!", "").dup.join(" ")
} {
i
}
}.join(" ")
};
if (item.contains("*")) {
item = item.split($ ).collect{
|i|
if (i.contains("*")) {
i = i.split($*);
i[0].dup(i[1].asInt).join(" ");
} {
i
}
}.join(" ")
};
^item.asSymbol;
}
maybeSplit {
|sep|
var item = this;
if (item.isKindOf(String)) {
item = item.split(sep);
};
^item;
}
whichTypeOf {
var symbol = this, midinote = \rest, typeof = \percussion; // fix me: what about Integers?
if (symbol.isRest,
{ typeof = \rest; },
{
if (symbol.percussion.notNil,
{ typeof = \percussion; },
{
if (symbol.chord.notNil,
{ typeof = \chord; },
{
if (symbol.midi.notNil,
{ typeof = \note; },
{
if (symbol.asGMPerc.notNil)
{ typeof = \percussion; }
});
});
});
});
^typeof;
}
asReNote {
var symbol = this, midinote = \rest;
if (symbol.percussion.notNil,
{ midinote = symbol.percussion; },
{
if (symbol.chord.notNil,
{ midinote = symbol.chord(0); },
{
if (symbol.midi.notNil,
{ midinote = symbol.midi(0); },
{
if(symbol.asGMPerc.notNil)
{ midinote = symbol.asGMPerc; }
});
});
});
^midinote;
}
parseEvents {
var acc, size, dur, time, octave;
var pattern = this.asString;
var events = [];
/*
Basic Steps:
1. remove unwanted stuff
2. measure the List size
3. calculate the duration
*/
pattern = pattern.split($ ).reject { |x| x.asString.size < 1 };
size = pattern.size;
dur = 1/size;
// Then we can start building our `List of Events`:
^pattern
// based on the `symbol`, we'll create the Events with each duration.
.collect(_.createSingleEvent(dur))
// since we don't need to calculate the individual duration anymore, the `LoE` needs to be flattened to be able to apply functions over each Event.
.flat
// and to be sure, we'll remove everything that's not an Event.
.reject(_.isKindOf(Event).not)
;
}
}
+ Event {
applyAccent {
|gain=0.9|
var symbol = this.at(\symbol), accent = 0;
if (symbol.isKindOf(List) || symbol.isKindOf(Array)) {
if (symbol.reject{ |x| x.asString.contains("@").not }.size.asBoolean) { accent = 0.25 }
} {
if (symbol.asString.contains("@")) { accent = 0.25 }
};
^this
.merge((accent: accent), {|a,b| b })
;
}
applyOctave {
var symbol = this.at(\symbol), shift = 0;
if (symbol.isKindOf(List) || symbol.isKindOf(Array)) {
if (symbol.reject{ |x| x.asString.contains(",").not }.size.asBoolean) { shift = -1 };
if (symbol.reject{ |x| x.asString.contains("'").not }.size.asBoolean) { shift = 1 };
} {
if (symbol.asString.contains(",")) { shift = -1 };
if (symbol.asString.contains("'")) { shift = 1 };
}
;
^this
.merge((shift: shift), {|a,b| b })
;
}
applyTypeOf {
var symbol = this.at(\symbol), typeof;
if (symbol.isKindOf(Array)) {
// in this particular case, i'm only interested in obtaining just one typeof
// it might happen, but having a `chord|perc-note` doesn't make much sense.
typeof = symbol.collect(_.maybeCleanUp).collect(_.asSymbol).collect(_.whichTypeOf).uniq.reject{ |x| x == \rest }.pop;
} {
typeof = symbol.maybeCleanUp.asSymbol.whichTypeOf;
}
;
^this
.merge((typeof: typeof), {|a,b| b })
;
}
applyReNote {
var symbol = this.at(\symbol), midinote;
if (symbol.isKindOf(Array)) {
midinote = symbol.collect(_.maybeCleanUp).collect(_.asSymbol).collect(_.asReNote).uniq;
} {
midinote = symbol.maybeCleanUp.asSymbol.asReNote;
}
;
^this
.merge((midinote: midinote), {|a,b| b })
;
}
}
+ Array {
applyIndex {
^this
.collect{ |x, i| x.merge((index: i), {|a,b| b}); };
}
}
+ SequenceableCollection {
uniq {
var result = List.new;
this.do{
|item|
if (result.indexOfEqual(item).isNil) {
result.add( item );
}
};
^result.asArray;
}
pseq {
|rep = inf, offs = 0|
^Pseq(this, rep, offs);
}
pshuf {
|rep = inf|
^Pshuf(this, rep);
}
prand {
|rep = inf|
^Prand(this, rep);
}
pxrand {
|rep = inf|
^Pxrand(this, rep);
}
pwrand {
|weights, rep = inf|
weights = weights ?? [(1 / this.size) ! this.size].normalizeSum;
^Pwrand(this, weights, rep);
}
place {
|rep = inf, offs = 0|
^Place(this, rep, offs);
}
// alias because String.shuffle
shuffle { ^this.scramble; }
}
+ Float {
midirange {
^(127 * this).round;
}
}
+ Integer {
rangemidi {
^(this/127).asStringPrec(2);
}
}