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Merge branch 'main' of github.com:yaxu/strudel into main

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This commit is contained in:
alex 2022-01-27 07:52:39 +00:00
commit cba0084e3d
3 changed files with 66 additions and 13 deletions
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50
js/strudel.mjs
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@ -191,16 +191,18 @@ class Pattern {
this.query = query
}
splitQueries() {
_splitQueries() {
// Splits queries at cycle boundaries. This makes some calculations
// easier to express, as all events are then constrained to happen within
// a cycle.
var query = function(span) {
return flatten(span.spanCycles.map(subspan => this.query(subspan)))
var pat = this
var q = function(span) {
return flatten(span.spanCycles.map(subspan => pat.query(subspan)))
}
return new Pattern(query)
return new Pattern(q)
}
withQuerySpan(func) {
return new Pattern(span => this.query(func(span)))
}
@ -235,7 +237,7 @@ class Pattern {
}
_filterEvents(event_test) {
return new Pattern(span => this.query(span).filter(event_tespanCyclesst))
return new Pattern(span => this.query(span).filter(event_test))
}
_filterValues(value_test) {
@ -424,11 +426,15 @@ class Pattern {
when(binary_pat, func) {
//binary_pat = sequence(binary_pat)
var true_pat = binary_pat._filter_values(id)
var false_pat = binary_pat._filter_values(val => !val)
var with_pat = true_pat.fmap(_ => y => y).app_right(func(this))
var without_pat = false_pat.fmap(_ => y => y).app_right(this)
return stack(with_pat, without_pat)
var true_pat = binary_pat._filterValues(id)
var false_pat = binary_pat._filterValues(val => !val)
var with_pat = true_pat.fmap(_ => y => y).appRight(func(this))
var without_pat = false_pat.fmap(_ => y => y).appRight(this)
return stack([with_pat, without_pat])
}
off(time_pat, func) {
return stack([this, func(this._early(time_pat))])
}
off(time_pat, func) {
@ -504,5 +510,27 @@ function stack(pats) {
return new Pattern(query)
}
export {Fraction, TimeSpan, Hap, Pattern, pure, stack}
function slowcat(pats) {
// Concatenation: combines a list of patterns, switching between them
// successively, one per cycle.
// (currently behaves slightly differently from Tidal)
//var pats = pats.map(reify)
var query = function(span) {
var pat = pats[Math.floor(span.begin) % pats.length]
return pat.query(span)
}
return new Pattern(query)._splitQueries()
}
function fastcat(pats) {
// Concatenation: as with slowcat, but squashes a cycle from each
// pattern into one cycle
return slowcat(pats)._fast(pats.length)
}
function cat(pats) {
return fastcat(pats)
}
export {Fraction, TimeSpan, Hap, Pattern, pure, stack, slowcat, fastcat, cat}