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fix scales without c

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This commit is contained in:
Felix Roos 2022-02-28 22:55:03 +01:00
parent df21c81bfa
commit 71952ca8fd
2 changed files with 5 additions and 2 deletions
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4
repl/src/tonal.mjs
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@ -21,11 +21,11 @@ export function scaleOffset(scale, offset, index = 0) {
while (Math.abs(i) < Math.abs(offset)) { while (Math.abs(i) < Math.abs(offset)) {
i += direction; i += direction;
const index = mod(i, notes.length); const index = mod(i, notes.length);
if (direction < 0 && n === 'C') { if (direction < 0 && n[0] === 'C') {
o += direction; o += direction;
} }
n = notes[index]; n = notes[index];
if (direction > 0 && n === 'C') { if (direction > 0 && n[0] === 'C') {
o += direction; o += direction;
} }
} }

3
test/tonal.test.mjs
View File

@ -33,6 +33,9 @@ describe('scaleTranspose', () => {
scaleTranspose('C minor', -1, 'Bb2'); scaleTranspose('C minor', -1, 'Bb2');
scaleTranspose('C minor', 8, 'C4'); scaleTranspose('C minor', 8, 'C4');
scaleTranspose('C4 minor', 8, 'C5'); scaleTranspose('C4 minor', 8, 'C5');
scaleTranspose('C# major', 8, 'C#4');
scaleTranspose('C# major', -1, 'B#2');
scaleTranspose('C# major', -2, 'A#2');
}); });
}); });