81 lines
2.3 KiB
C#
81 lines
2.3 KiB
C#
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using FishNet.Documenting;
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using System;
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using UnityEngine;
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namespace FishNet.Managing.Timing
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{
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[APIExclude]
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public class MovingAverage
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{
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#region Public.
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/// <summary>
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/// Average from samples favoring the most recent sample.
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/// </summary>
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public float Average { get; private set; }
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#endregion
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/// <summary>
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/// Next index to write a sample to.
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/// </summary>
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private int _writeIndex;
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/// <summary>
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/// Collected samples.
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/// </summary>
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private float[] _samples;
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/// <summary>
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/// Number of samples written. Will be at most samples size.
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/// </summary>
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private int _writtenSamples;
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/// <summary>
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/// Samples accumulated over queue.
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/// </summary>
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private float _sampleAccumulator;
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public MovingAverage(int sampleSize)
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{
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if (sampleSize < 0)
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sampleSize = 0;
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else if (sampleSize < 2)
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NetworkManager.StaticLogWarning("Using a sampleSize of less than 2 will always return the most recent value as Average.");
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_samples = new float[sampleSize];
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}
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/// <summary>
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/// Computes a new windowed average each time a new sample arrives
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/// </summary>
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/// <param name="newSample"></param>
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public void ComputeAverage(float newSample)
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{
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if (_samples.Length <= 1)
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{
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Average = newSample;
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return;
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}
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_sampleAccumulator += newSample;
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_samples[_writeIndex] = newSample;
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//Increase writeIndex.
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_writeIndex++;
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_writtenSamples = Math.Max(_writtenSamples, _writeIndex);
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if (_writeIndex >= _samples.Length)
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_writeIndex = 0;
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Average = _sampleAccumulator / _writtenSamples;
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/* If samples are full then drop off
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* the oldest sample. This will always be
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* the one just after written. The entry isn't
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* actually removed from the array but will
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* be overwritten next sample. */
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if (_writtenSamples >= _samples.Length)
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_sampleAccumulator -= _samples[_writeIndex];
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}
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}
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}
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