hacklab/strudel
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patternify echo + echoWith

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This commit is contained in:
Felix Roos 2022-03-24 23:55:07 +01:00
parent ca318375a4
commit b1cde584bf
2 changed files with 47 additions and 3 deletions
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31
repl/src/tunes.ts
View file

@ -637,3 +637,34 @@ stack(
"mad".slow(2).tone(breaks) "mad".slow(2).tone(breaks)
).cpm(78).slow(4).pianoroll() ).cpm(78).slow(4).pianoroll()
`; `;
export const goodTimes = `const scale = slowcat('C3 dorian','Bb2 major').slow(4);
stack(
"2*4".add(12).scale(scale)
.off(1/8,x=>x.scaleTranspose("2")).fast(2)
.scaleTranspose("<0 1 2 1>").hush(),
"<0 1 2 3>(3,8,2)"
.scale(scale)
.off(1/4,x=>x.scaleTranspose("2,4")),
"<0 4>(5,8)".scale(scale).transpose(-12)
)
.velocity(".6 .7".fast(4))
.legato("2")
.scale(scale)
.scaleTranspose("<0>".slow(4))
.tone((await piano()).chain(out()))
//.midi()
.velocity(.8)
.transpose(5)
.slow(2)
.pianoroll({maxMidi:100,minMidi:20})`;
export const echoPiano = `"<0 2 [4 6](3,4,1) 3*2>"
.scale('D minor')
.color('salmon')
.off(1/4, x=>x.scaleTranspose(2).color('green'))
.off(1/2, x=>x.scaleTranspose(6).color('steelblue'))
.legato(.5)
.echo(4, 1/8, .5)
.tone((await piano()).chain(out()))
.pianoroll()`;

19
strudel.mjs
View file

@ -733,12 +733,12 @@ class Pattern {
} }
// these might change with: https://github.com/tidalcycles/Tidal/issues/902 // these might change with: https://github.com/tidalcycles/Tidal/issues/902
echoWith(times, time, func) { _echoWith(times, time, func) {
return stack(...range(0, times - 1).map((i) => func(this.late(i * time), i))); return stack(...range(0, times - 1).map((i) => func(this.late(i * time), i)));
} }
echo(times, time, feedback) { _echo(times, time, feedback) {
return this.echoWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i))); return this._echoWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i)));
} }
iter(times) { iter(times) {
@ -1000,6 +1000,19 @@ export function makeComposable(func) {
return func; return func;
} }
const patternify2 = (f) => (pata, patb, pat) => pata.fmap(a => b => f.call(pat, a, b)).appLeft(patb).outerJoin()
const patternify3 = (f) => (pata, patb, patc, pat) => pata.fmap(a => b => c => f.call(pat, a, b, c)).appLeft(patb).appLeft(patc).outerJoin()
const patternify4 = (f) => (pata, patb, patc, patd, pat) => pata.fmap(a => b => c => d => f.call(pat, a, b, c, d)).appLeft(patb).appLeft(patc).appLeft(patd).outerJoin()
Pattern.prototype.echo = function (...args) {
args = args.map(reify);
return patternify3(Pattern.prototype._echo)(...args, this);
};
Pattern.prototype.echoWith = function (...args) {
args = args.map(reify);
return patternify3(Pattern.prototype._echoWith)(...args, this);
};
// call this after all Patter.prototype.define calls have been executed! (right before evaluate) // call this after all Patter.prototype.define calls have been executed! (right before evaluate)
Pattern.prototype.bootstrap = function() { Pattern.prototype.bootstrap = function() {
// makeComposable(Pattern.prototype); // makeComposable(Pattern.prototype);