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Merge pull request #185 from bpow/mini-notation-random-offsets

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change "stride"/"offset" of successive degradeBy/chooseIn
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Felix Roos 2022-08-14 17:40:41 +02:00 committed by GitHub
commit 4d8adde9d5
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2 changed files with 7 additions and 6 deletions
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5
packages/mini/mini.mjs
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@ -11,6 +11,7 @@ import { addMiniLocations } from '@strudel.cycles/eval/shapeshifter.mjs';
const { pure, Pattern, Fraction, stack, slowcat, sequence, timeCat, silence, reify } = strudel;
var _seedState = 0;
const randOffset = 0.0002;
function _nextSeed() {
return _seedState++;
@ -28,7 +29,7 @@ const applyOptions = (parent) => (pat, i) => {
case 'bjorklund':
return pat.euclid(operator.arguments_.pulse, operator.arguments_.step, operator.arguments_.rotation);
case 'degradeBy':
return reify(pat)._degradeByWith(strudel.rand.early(Math.PI * _nextSeed()).segment(1), operator.arguments_.amount);
return reify(pat)._degradeByWith(strudel.rand.early(randOffset * _nextSeed()).segment(1), operator.arguments_.amount);
// TODO: case 'fixed-step': "%"
}
console.warn(`operator "${operator.type_}" not implemented`);
@ -91,7 +92,7 @@ export function patternifyAST(ast) {
return stack(...children);
}
if (alignment === 'r') {
return strudel.chooseInWith(strudel.rand.early(Math.PI * _nextSeed()).segment(1), children);
return strudel.chooseInWith(strudel.rand.early(randOffset * _nextSeed()).segment(1), children);
}
const weightedChildren = ast.source_.some((child) => !!child.options_?.weight);
if (!weightedChildren && alignment === 't') {

8
repl/src/test/__snapshots__/tunes.test.mjs.snap
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@ -318,10 +318,10 @@ exports[`renders tunes > tune: bossa 1`] = `
exports[`renders tunes > tune: bossaRandom 1`] = `
[
"0/1 -> 1/2: {\\"note\\":\\"G4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5601851851851851}",
"0/1 -> 1/2: {\\"note\\":\\"B4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5787037037037037}",
"0/1 -> 1/2: {\\"note\\":\\"C5\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5833333333333333}",
"0/1 -> 1/2: {\\"note\\":\\"E5\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.6018518518518519}",
"0/1 -> 1/4: {\\"note\\":\\"G4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5601851851851851}",
"0/1 -> 1/4: {\\"note\\":\\"B4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5787037037037037}",
"0/1 -> 1/4: {\\"note\\":\\"C5\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5833333333333333}",
"0/1 -> 1/4: {\\"note\\":\\"E5\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.6018518518518519}",
"3/4 -> 1/1: {\\"note\\":\\"G4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5601851851851851}",
"3/4 -> 1/1: {\\"note\\":\\"B4\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5787037037037037}",
"3/4 -> 1/1: {\\"note\\":\\"C5\\",\\"clip\\":1,\\"s\\":\\"piano\\",\\"pan\\":0.5833333333333333}",