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Show EDO intervals in _pitchwheel() display

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robmckinnon
2025-06-28 19:14:20 +01:00
committed by robmckinnon
parent 43293dc80f
commit ad331c8c2e
1 changed files with 32 additions and 1 deletions
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packages/draw/pitchwheel.mjs
+32 -1
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@@ -54,11 +54,42 @@ export function pitchwheel({
}
if (edo) {
edo = haps.length >= 1 && haps[0].value && haps[0].value.edo ? haps[0].value.edo : edo;
root = haps.length >= 1 && haps[0].value && haps[0].value.root ? haps[0].value.root : root;
const degreeIndexes =
haps.length >= 1 && haps[0].value && haps[0].value.degreeIndexes ? haps[0].value.degreeIndexes : null;
const intLabels = haps.length >= 1 && haps[0].value && haps[0].value.intLabels ? haps[0].value.intLabels : null;
ctx.font = '20px sans-serif';
const label = `${edo} EDO`;
// Draw EDO label:
ctx.fillText(label, centerX + radius - ctx.measureText(label).width + 15, centerY + radius);
Array.from({ length: edo }, (_, i) => {
const angle = freq2angle(root * Math.pow(2, i / edo), root);
const [x, y] = circlePos(centerX, centerY, radius, angle);
ctx.beginPath();
ctx.arc(x, y, hapRadius, 0, 2 * Math.PI);
// Draw interval label for degree i when it exists:
if (degreeIndexes === null || degreeIndexes.includes(i)) {
ctx.globalAlpha = 1;
ctx.arc(x, y, hapRadius, 0, 2 * Math.PI);
if (intLabels !== null) {
const degree = degreeIndexes.indexOf(i);
if (intLabels[degree]) {
if (angle < 0.32 && angle > 0.125) {
ctx.fillText(intLabels[degree], x - 34, y);
} else {
if (angle < 0.1 && angle > -1.125) {
ctx.fillText(intLabels[degree], x - 7, y - 12);
} else {
ctx.fillText(intLabels[degree], x + 9, y);
}
}
}
}
} else {
ctx.globalAlpha = 0.15;
ctx.arc(x, y, hapRadius, 0, 2 * Math.PI);
}
ctx.fill();
});
ctx.stroke();