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add ribbon + test + docs

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This commit is contained in:
Felix Roos 2023-01-19 12:25:12 +01:00
parent e058ae54ef
commit 9731eb8c5b
4 changed files with 42 additions and 0 deletions
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10
packages/core/pattern.mjs
View file

@ -2028,6 +2028,16 @@ export const bypass = register('bypass', function (on, pat) {
return on ? silence : pat;
});
/**
* Loops the pattern inside at `offset` for `cycles`.
* @param {number} offset start point of loop in cycles
* @param {number} cycles loop length in cycles
* @example
* // Looping a portion of randomness
* note(irand(8).segment(4).scale('C3 minor')).ribbon(1337, 2)
*/
export const ribbon = register('ribbon', (offset, cycles, pat) => pat.early(offset).restart(pure(1).slow(cycles)));
// sets absolute duration of haps
// TODO - fix
export const duration = register('duration', function (value, pat) {

7
packages/core/test/pattern.test.mjs
View file

@ -914,6 +914,13 @@ describe('Pattern', () => {
expect(run(4).firstCycle()).toStrictEqual(sequence(0, 1, 2, 3).firstCycle());
});
});
describe('ribbon', () => {
it('Can ribbon', () => {
expect(cat(0, 1, 2, 3, 4, 5, 6, 7).ribbon(2, 4).fast(4).firstCycle()).toStrictEqual(
sequence(2, 3, 4, 5).firstCycle(),
);
});
});
describe('linger', () => {
it('Can linger on the first quarter of a cycle', () => {
expect(sequence(0, 1, 2, 3, 4, 5, 6, 7).linger(0.25).firstCycle()).toStrictEqual(