hacklab/strudel
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request 'delta -> tight/tightx/loose refinements' (#1832) from delta into main

Browse source 
Reviewed-on: https://codeberg.org/uzu/strudel/pulls/1832
This commit is contained in:
Alex McLean 2025-12-14 15:09:10 +01:00
commit 63d254daf4
4 changed files with 225 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

44
packages/core/signal.mjs
View file

@ -970,10 +970,48 @@ export const keyDown = register('keyDown', function (pat) {
});
/**
* A pattern that gives the duration of events that are combined with it.
* A pattern measuring the duration of events,
* in cycles per event. `cyclesPer` doesn't have structure itself, but takes structure, and therefore
* event durations, from the pattern that it is combined with.
* For example `cyclesPer.struct("1 1 [1 1] 1")` would give the same as `"0.25 0.25 [0.125 0.125] 0.25"`.
* See also its reciprocal, `per`, also known as `perCycle`.
* @example
* sound("bd sd [bd bd] sd*4 [- sd] [bd [bd bd]]").note(delta.withValue(x => 1/x + 20))
* // Shorter events are lower in pitch
* sound("saw saw [saw saw] saw")
* .note(cyclesPer.range(50, 100))
* @example
* sound("bd sd [bd bd] sd*4 [- sd] [bd [bd bd]]")
* .note(cyclesPer.add(20))
*/
export const delta = new Pattern(function (state) {
export const cyclesPer = new Pattern(function (state) {
return [new Hap(undefined, state.span, state.span.duration)];
});
/**
* A pattern measuring the 'shortness' of events, or in other words, the duration of pattern events,
* in events per cycle. `per` doesn't have structure itself, but takes structure, and therefore
* event durations, from the pattern that it is combined with.
* For example `per.struct("1 1 [1 1] 1")` would give the same as `"4 4 [8 8] 4"`.
* See also its reciprocal, `cyclesPer`.
* @synonyms perCycle
* @example
* // Shorter events are more distorted
* n("0 0*2 0 0*2 0 [0 0 0]@2").sound("bd")
* .distort(per.div(2))
*/
export const per = new Pattern(function (state) {
return [new Hap(undefined, state.span, Fraction(1).div(state.span.duration))];
});
export const perCycle = per;
/**
* Like `per` but measures the shortness of events according to an exponential curve. In
* particular, where the event duration halves, the
* returned value increases by one. `perx.struct("1 1 [1 [1 1]] 1")` would therefore be
* the same as `"3 3 [4 [5 5]] 3"`.
*/
export const perx = new Pattern(function (state) {
const n = Fraction(1).div(state.span.duration);
return [new Hap(undefined, state.span, Math.log(n) / Math.log(2) + 1)];
});