export const toMIDI = (f: number) => ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"][(f % 12 + 12) % 12] + Math.round(f / 12 - 2);
export const toRad = (degrees: number) => degrees * Math.PI / 180;
export const atodb = (a: number) => 20 * Math.log10(a);
export const dbtoa = (db: number) => 10 ** (db / 20);
export const denormalize = (x: number, min: number, max: number) => min + (max - min) * x;
export const normalize = (x: number, min: number, max: number) => (x - min) / (max - min) || 0;
export const normLog = (x: number, min: number, max: number) => {
    const normalized = normalize(x, min, max);
    const logMin = Math.log(Math.max(Number.EPSILON, min));
    const logMax = Math.log(Math.max(Number.EPSILON, max));
    const vLog = denormalize(normalized, logMin, logMax);
    const v = Math.exp(vLog);
    return Math.max(min, Math.min(max, v));
};
export const iNormLog = (vIn: number, min: number, max: number) => {
    const v = Math.max(min, Math.min(max, vIn));
    const vLog = Math.log(Math.max(Number.EPSILON, v));
    const logMin = Math.log(Math.max(Number.EPSILON, min));
    const logMax = Math.log(Math.max(Number.EPSILON, max));
    const normalized = normalize(vLog, logMin, logMax);
    return denormalize(normalized, min, max);
};
export const normExp = iNormLog;
export const iNormExp = normLog;
export const roundedRect = (ctx: CanvasRenderingContext2D, x: number, y: number, width: number, height: number, radius: number | number[]) => {
    const radii = [0, 0, 0, 0];
    if (typeof radius === "number") radii.fill(radius);
    else radius.forEach((v, i) => radii[i] = v);
    ctx.beginPath();
    ctx.moveTo(x + radii[0], y);
    ctx.lineTo(x + width - radii[1], y);
    ctx.quadraticCurveTo(x + width, y, x + width, y + radii[1]);
    ctx.lineTo(x + width, y + height - radii[2]);
    ctx.quadraticCurveTo(x + width, y + height, x + width - radii[2], y + height);
    ctx.lineTo(x + radii[3], y + height);
    ctx.quadraticCurveTo(x, y + height, x, y + height - radii[3]);
    ctx.lineTo(x, y + radii[0]);
    ctx.quadraticCurveTo(x, y, x + radii[0], y);
    ctx.closePath();
    ctx.stroke();
};
export const fillRoundedRect = (ctx: CanvasRenderingContext2D, x: number, y: number, width: number, height: number, radius: number | number[]) => {
    const radii = [0, 0, 0, 0];
    if (typeof radius === "number") radii.fill(radius);
    else radius.forEach((v, i) => radii[i] = v);
    ctx.beginPath();
    ctx.moveTo(x + radii[0], y);
    ctx.lineTo(x + width - radii[1], y);
    ctx.quadraticCurveTo(x + width, y, x + width, y + radii[1]);
    ctx.lineTo(x + width, y + height - radii[2]);
    ctx.quadraticCurveTo(x + width, y + height, x + width - radii[2], y + height);
    ctx.lineTo(x + radii[3], y + height);
    ctx.quadraticCurveTo(x, y + height, x, y + height - radii[3]);
    ctx.lineTo(x, y + radii[0]);
    ctx.quadraticCurveTo(x, y, x + radii[0], y);
    ctx.closePath();
    ctx.fill();
};