fix dithering namespaces

src/ImageSharp/Dithering/ErrorDiffusion/AtkinsonDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Atkinson image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class AtkinsonDiffuser : ErrorDiffuser
+    public sealed class AtkinsonDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/BurksDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Burks image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class BurksDiffuser : ErrorDiffuser
+    public sealed class BurksDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/ErrorDiffuser.cs → src/ImageSharp/Dithering/ErrorDiffusion/ErrorDiffuserBase.cs

@@ -7,12 +7,12 @@ using System.Runtime.CompilerServices;
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.PixelFormats;
 
-namespace SixLabors.ImageSharp.Dithering
+namespace SixLabors.ImageSharp.Dithering.Base
 {
     /// <summary>
     /// The base class for performing error diffusion based dithering.
     /// </summary>
-    public abstract class ErrorDiffuser : IErrorDiffuser
+    public abstract class ErrorDiffuserBase : IErrorDiffuser
     {
         /// <summary>
         /// The vector to perform division.
@@ -40,11 +40,11 @@ namespace SixLabors.ImageSharp.Dithering
         private readonly Fast2DArray<float> matrix;
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="ErrorDiffuser"/> class.
+        /// Initializes a new instance of the <see cref="ErrorDiffuserBase"/> class.
         /// </summary>
         /// <param name="matrix">The dithering matrix.</param>
         /// <param name="divisor">The divisor.</param>
-        internal ErrorDiffuser(Fast2DArray<float> matrix, byte divisor)
+        internal ErrorDiffuserBase(Fast2DArray<float> matrix, byte divisor)
         {
             Guard.NotNull(matrix, nameof(matrix));
             Guard.MustBeGreaterThan(divisor, 0, nameof(divisor));

src/ImageSharp/Dithering/ErrorDiffusion/FloydSteinbergDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Floyd–Steinberg image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class FloydSteinbergDiffuser : ErrorDiffuser
+    public sealed class FloydSteinbergDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/JarvisJudiceNinkeDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the JarvisJudiceNinke image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class JarvisJudiceNinkeDiffuser : ErrorDiffuser
+    public sealed class JarvisJudiceNinkeDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/Sierra2Diffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Sierra2 image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class Sierra2Diffuser : ErrorDiffuser
+    public sealed class Sierra2Diffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/Sierra3Diffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Sierra3 image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class Sierra3Diffuser : ErrorDiffuser
+    public sealed class Sierra3Diffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/SierraLiteDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the SierraLite image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class SierraLiteDiffuser : ErrorDiffuser
+    public sealed class SierraLiteDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/ErrorDiffusion/StuckiDiffuser.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Dithering
@@ -9,7 +10,7 @@ namespace SixLabors.ImageSharp.Dithering
     /// Applies error diffusion based dithering using the Stucki image dithering algorithm.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class StuckiDiffuser : ErrorDiffuser
+    public sealed class StuckiDiffuser : ErrorDiffuserBase
     {
         /// <summary>
         /// The diffusion matrix

src/ImageSharp/Dithering/Ordered/BayerDither.cs

@@ -1,15 +1,16 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
-namespace SixLabors.ImageSharp.Dithering.Ordered
+namespace SixLabors.ImageSharp.Dithering
 {
     /// <summary>
     /// Applies error diffusion based dithering using the 4x4 Bayer dithering matrix.
     /// <see href="http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT"/>
     /// </summary>
-    public sealed class BayerDither : OrderedDither4x4
+    public sealed class BayerDither : OrderedDitherBase
     {
         /// <summary>
         /// The threshold matrix.

src/ImageSharp/Dithering/Ordered/OrderedDither.cs

@@ -1,15 +1,16 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
+using SixLabors.ImageSharp.Dithering.Base;
 using SixLabors.ImageSharp.Memory;
 
-namespace SixLabors.ImageSharp.Dithering.Ordered
+namespace SixLabors.ImageSharp.Dithering
 {
     /// <summary>
     /// Applies error diffusion based dithering using the 4x4 ordered dithering matrix.
     /// <see href="https://en.wikipedia.org/wiki/Ordered_dithering"/>
     /// </summary>
-    public sealed class OrderedDither : OrderedDither4x4
+    public sealed class OrderedDither : OrderedDitherBase
     {
         /// <summary>
         /// The threshold matrix.

src/ImageSharp/Dithering/Ordered/OrderedDither4x4.cs → src/ImageSharp/Dithering/Ordered/OrderedDitherBase.cs

@@ -4,12 +4,12 @@
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.PixelFormats;
 
-namespace SixLabors.ImageSharp.Dithering.Ordered
+namespace SixLabors.ImageSharp.Dithering.Base
 {
     /// <summary>
     /// The base class for performing ordered ditheroing using a 4x4 matrix.
     /// </summary>
-    public abstract class OrderedDither4x4 : IOrderedDither
+    public abstract class OrderedDitherBase : IOrderedDither
     {
         /// <summary>
         /// The dithering matrix
@@ -17,10 +17,10 @@ namespace SixLabors.ImageSharp.Dithering.Ordered
         private Fast2DArray<byte> matrix;
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="OrderedDither4x4"/> class.
+        /// Initializes a new instance of the <see cref="OrderedDitherBase"/> class.
         /// </summary>
         /// <param name="matrix">The thresholding matrix. </param>
-        internal OrderedDither4x4(Fast2DArray<byte> matrix)
+        internal OrderedDitherBase(Fast2DArray<byte> matrix)
         {
             this.matrix = matrix;
         }

tests/ImageSharp.Tests/Processing/Binarization/DitherTests.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using SixLabors.ImageSharp.Dithering;
-using SixLabors.ImageSharp.Dithering.Ordered;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Processing.Processors;
 using Moq;

tests/ImageSharp.Tests/Processing/Processors/Binarization/DitherTests.cs

@@ -1,8 +1,7 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.Dithering;
-using SixLabors.ImageSharp.Dithering.Ordered;
+using SixLabors.ImageSharp.Dithering; 
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Tests.TestUtilities.ImageComparison;