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34 lines
1.0 KiB
34 lines
1.0 KiB
// Copyright (c) Six Labors and contributors.
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// Licensed under the Apache License, Version 2.0.
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using SixLabors.ImageSharp.Dithering.Base;
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using SixLabors.ImageSharp.Memory;
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namespace SixLabors.ImageSharp.Dithering
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{
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/// <summary>
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/// Applies error diffusion based dithering using the Stevenson-Arce image dithering algorithm.
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/// </summary>
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public sealed class StevensonArceDiffuser : ErrorDiffuserBase
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{
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/// <summary>
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/// The diffusion matrix
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/// </summary>
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private static readonly Fast2DArray<float> StevensonArceMatrix =
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new float[,]
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{
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{ 0, 0, 0, 0, 0, 32, 0 },
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{ 12, 0, 26, 0, 30, 0, 16 },
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{ 0, 12, 0, 26, 0, 12, 0 },
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{ 5, 0, 12, 0, 12, 0, 5 }
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};
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/// <summary>
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/// Initializes a new instance of the <see cref="StevensonArceDiffuser"/> class.
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/// </summary>
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public StevensonArceDiffuser()
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: base(StevensonArceMatrix, 200)
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{
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}
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}
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}
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