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osu-lazer/osu.Game/Screens/Play/SongProgressGraph.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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using System.Linq;
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using System.Collections.Generic;
using System.Diagnostics;
using osu.Game.Rulesets.Objects;
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namespace osu.Game.Screens.Play
{
public class SongProgressGraph : SquareGraph
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{
private IEnumerable<HitObject> objects;
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public IEnumerable<HitObject> Objects
{
set
{
objects = value;
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const int granularity = 200;
Values = new int[granularity];
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if (!objects.Any())
return;
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double firstHit = objects.First().StartTime;
double lastHit = objects.Max(o => o.GetEndTime());
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if (lastHit == 0)
lastHit = objects.Last().StartTime;
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double interval = (lastHit - firstHit + 1) / granularity;
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foreach (var h in objects)
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{
double endTime = h.GetEndTime();
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Debug.Assert(endTime >= h.StartTime);
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int startRange = (int)((h.StartTime - firstHit) / interval);
int endRange = (int)((endTime - firstHit) / interval);
for (int i = startRange; i <= endRange; i++)
Values[i]++;
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}
}
}
}
}