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42 lines
1.4 KiB
C#
42 lines
1.4 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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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace osu.Game.Screens.Edit.Compose.Components
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{
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public class BeatDivisorPresetCollection
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{
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public BeatDivisorType Type { get; }
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public IReadOnlyList<int> Presets { get; }
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private BeatDivisorPresetCollection(BeatDivisorType type, IEnumerable<int> presets)
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{
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Type = type;
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Presets = presets.ToArray();
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}
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public static readonly BeatDivisorPresetCollection COMMON = new BeatDivisorPresetCollection(BeatDivisorType.Common, new[] { 1, 2, 4, 8, 16 });
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public static readonly BeatDivisorPresetCollection TRIPLETS = new BeatDivisorPresetCollection(BeatDivisorType.Triplets, new[] { 1, 3, 6, 12 });
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public static BeatDivisorPresetCollection Custom(int maxDivisor)
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{
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var presets = new List<int>();
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for (int candidate = 1; candidate <= Math.Sqrt(maxDivisor); ++candidate)
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{
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if (maxDivisor % candidate != 0)
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continue;
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presets.Add(candidate);
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presets.Add(maxDivisor / candidate);
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}
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return new BeatDivisorPresetCollection(BeatDivisorType.Custom, presets.Distinct().Order());
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}
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}
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}
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