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23 lines
1.4 KiB
JavaScript
23 lines
1.4 KiB
JavaScript
/*
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tune.mjs - <short description TODO>
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Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/xen/tune.mjs>
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This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import Tune from './tunejs.js';
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import { Pattern } from '@strudel.cycles/core';
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Pattern.prototype._tune = function (scale, tonic = 220) {
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const tune = new Tune();
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if (!tune.isValidScale(scale)) {
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throw new Error('not a valid tune.js scale name: "' + scale + '". See http://abbernie.github.io/tune/scales.html');
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}
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tune.loadScale(scale);
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tune.tonicize(tonic);
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return this._asNumber()._withHap((hap) => {
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return hap.withValue(() => tune.note(hap.value)).setContext({ ...hap.context, type: 'frequency' });
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});
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};
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Pattern.prototype.define('tune', (scale, pat) => pat.tune(scale), { composable: true, patternified: true });
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