mirror of https://github.com/ppy/osu
48 lines
1.5 KiB
C#
48 lines
1.5 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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#nullable disable
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using System;
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namespace osu.Game.Beatmaps.Timing
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{
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/// <summary>
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/// Stores the time signature of a track.
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/// For now, the lower numeral can only be 4; support for other denominators can be considered at a later date.
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/// </summary>
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public class TimeSignature : IEquatable<TimeSignature>
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{
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/// <summary>
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/// The numerator of a signature.
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/// </summary>
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public int Numerator { get; }
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// TODO: support time signatures with a denominator other than 4
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// this in particular requires a new beatmap format.
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public TimeSignature(int numerator)
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{
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if (numerator < 1)
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throw new ArgumentOutOfRangeException(nameof(numerator), numerator, "The numerator of a time signature must be positive.");
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Numerator = numerator;
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}
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public static TimeSignature SimpleTriple { get; } = new TimeSignature(3);
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public static TimeSignature SimpleQuadruple { get; } = new TimeSignature(4);
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public override string ToString() => $"{Numerator}/4";
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public bool Equals(TimeSignature other)
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{
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if (ReferenceEquals(null, other)) return false;
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if (ReferenceEquals(this, other)) return true;
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return Numerator == other.Numerator;
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}
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public override int GetHashCode() => Numerator;
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}
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}
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