More cleanup

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Adapt.cs

@@ -2,7 +2,7 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using SixLabors.ImageSharp.ColorSpaces;
+using System.Runtime.CompilerServices;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
@@ -23,11 +23,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
             Guard.NotNull(sourceWhitePoint, nameof(sourceWhitePoint));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             return this.ChromaticAdaptation.Transform(color, sourceWhitePoint, this.WhitePoint);
         }
@@ -40,18 +36,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public CieLab Adapt(CieLab color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
             {
                 return color;
             }
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -63,18 +55,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public CieLch Adapt(CieLch color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
             {
                 return color;
             }
 
-            CieLab labColor = this.ToCieLab(color);
+            var labColor = this.ToCieLab(color);
             return this.ToCieLch(labColor);
         }
 
@@ -86,18 +74,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public CieLchuv Adapt(CieLchuv color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
             {
                 return color;
             }
 
-            CieLuv luvColor = this.ToCieLuv(color);
+            var luvColor = this.ToCieLuv(color);
             return this.ToCieLchuv(luvColor);
         }
 
@@ -109,18 +93,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public CieLuv Adapt(CieLuv color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WhitePoint.Equals(this.TargetLuvWhitePoint))
             {
                 return color;
             }
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
 
@@ -132,18 +112,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public HunterLab Adapt(HunterLab color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WhitePoint.Equals(this.TargetHunterLabWhitePoint))
             {
                 return color;
             }
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
 
@@ -155,11 +131,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         public LinearRgb Adapt(LinearRgb color)
         {
             Guard.NotNull(color, nameof(color));
-
+            this.CheckChromaticAdaptation();
-            if (!this.IsChromaticAdaptationPerformed)
-            {
-                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
-            }
 
             if (color.WorkingSpace.Equals(this.TargetRgbWorkingSpace))
             {
@@ -187,9 +159,20 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            LinearRgb linearInput = this.ToLinearRgb(color);
+            var linearInput = this.ToLinearRgb(color);
             LinearRgb linearOutput = this.Adapt(linearInput);
             return this.ToRgb(linearOutput);
         }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private void CheckChromaticAdaptation()
+        {
+            const string NoAdapterMessage = "Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.";
+
+            if (!this.IsChromaticAdaptationPerformed)
+            {
+                throw new InvalidOperationException(NoAdapterMessage);
+            }
+        }
     }
 }

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
@@ -46,7 +45,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -59,7 +58,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -72,7 +71,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -91,7 +90,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
                 : color;
 
             // Conversion
-            CieXyzToCieLabConverter converter = new CieXyzToCieLabConverter(this.TargetLabWhitePoint);
+            var converter = new CieXyzToCieLabConverter(this.TargetLabWhitePoint);
             return converter.Convert(adapted);
         }
 
@@ -104,7 +103,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -117,7 +116,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -130,7 +129,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -143,7 +142,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -156,7 +155,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -169,7 +168,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -182,7 +181,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
 
@@ -195,7 +194,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
     }

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs

@@ -40,7 +40,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -66,7 +66,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -79,7 +79,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieLab labColor = this.ToCieLab(color);
+            var labColor = this.ToCieLab(color);
             return this.ToCieLch(labColor);
         }
 
@@ -92,7 +92,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -105,7 +105,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -118,7 +118,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -131,7 +131,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -144,7 +144,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -157,7 +157,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -170,7 +170,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
 
@@ -183,7 +183,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
     }

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs

@@ -24,7 +24,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -37,7 +37,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -66,7 +66,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -79,7 +79,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieLab labColor = this.ToCieLab(color);
+            var labColor = this.ToCieLab(color);
             return this.ToCieLchuv(labColor);
         }
 
@@ -92,7 +92,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -105,7 +105,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -118,7 +118,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -131,7 +131,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -144,7 +144,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -157,7 +157,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -170,7 +170,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
 
@@ -183,7 +183,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         {
             Guard.NotNull(color, nameof(color));
 
-            CieXyz xyzColor = this.ToCieXyz(color);
+            var xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
     }

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsv.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs

@@ -1,8 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
-
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
 {
     /// <content>

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs

@@ -181,11 +181,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
             Guard.NotNull(color, nameof(color));
 
             // Conversion
-            Rgb rgb = YCbCrAndRgbConverter.Convert(color);
+            return YCbCrAndRgbConverter.Convert(color);
-
-            // Adaptation
-            // TODO: Check this!
-            return rgb.WorkingSpace.Equals(this.TargetRgbWorkingSpace) ? rgb : this.Adapt(rgb);
         }
     }
 }

src/ImageSharp/ColorSpaces/Conversion/IChromaticAdaptation.cs

@@ -1,8 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
-
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
 {
     /// <summary>

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyzToCieLuvConverter.cs

@@ -91,6 +91,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// </summary>
         /// <param name="input">The whitepoint</param>
         /// <returns>The <see cref="float"/></returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private static float ComputeVp(CieXyz input)
         {
             return (9 * input.Y) / (input.X + (15 * input.Y) + (3 * input.Z));

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyzToLinearRgbConverter.cs

@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System.Numerics;
+using System.Runtime.CompilerServices;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
 {
@@ -15,6 +16,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// <summary>
         /// Initializes a new instance of the <see cref="CieXyzToLinearRgbConverter"/> class.
         /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyzToLinearRgbConverter()
             : this(Rgb.DefaultWorkingSpace)
         {
@@ -24,6 +26,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// Initializes a new instance of the <see cref="CieXyzToLinearRgbConverter"/> class.
         /// </summary>
         /// <param name="workingSpace">The target working space.</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyzToLinearRgbConverter(IRgbWorkingSpace workingSpace)
         {
             this.TargetWorkingSpace = workingSpace;
@@ -33,9 +36,14 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// <summary>
         /// Gets the target working space
         /// </summary>
-        public IRgbWorkingSpace TargetWorkingSpace { get; }
+        public IRgbWorkingSpace TargetWorkingSpace
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+        }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public LinearRgb Convert(CieXyz input)
         {
             DebugGuard.NotNull(input, nameof(input));

src/ImageSharp/ColorSpaces/Conversion/Implementation/GammaCompanding.cs

@@ -19,6 +19,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// Initializes a new instance of the <see cref="GammaCompanding"/> class.
         /// </summary>
         /// <param name="gamma">The gamma value.</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public GammaCompanding(float gamma)
         {
             this.Gamma = gamma;
@@ -27,7 +28,11 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         /// <summary>
         /// Gets the gamma value
         /// </summary>
-        public float Gamma { get; }
+        public float Gamma
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+        }
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]

src/ImageSharp/ColorSpaces/Conversion/Implementation/LinearRgbAndCieXyzConverterBase.cs

@@ -48,7 +48,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
                 M44 = 1F
             };
 
-            Matrix4x4.Invert(xyzMatrix, out var inverseXyzMatrix);
+            Matrix4x4.Invert(xyzMatrix, out Matrix4x4 inverseXyzMatrix);
 
             var vector = Vector3.Transform(workingSpace.WhitePoint.Vector, inverseXyzMatrix);
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/LinearRgbToCieXyzConverter.cs

@@ -39,7 +39,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation
         public CieXyz Convert(LinearRgb input)
         {
             DebugGuard.NotNull(input, nameof(input));
-            Guard.IsTrue(input.WorkingSpace.Equals(this.SourceWorkingSpace), nameof(input.WorkingSpace), "Input and source working spaces must be equal.");
+            DebugGuard.IsTrue(input.WorkingSpace.Equals(this.SourceWorkingSpace), nameof(input.WorkingSpace), "Input and source working spaces must be equal.");
 
             var vector = Vector3.Transform(input.Vector, this.conversionMatrix);
             return new CieXyz(vector);

src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System.Numerics;
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion

tests/ImageSharp.Tests/Colorspaces/RgbAndCmykConversionTest.cs

@@ -32,10 +32,10 @@ namespace SixLabors.ImageSharp.Tests.Colorspaces
         public void Convert_Cmyk_To_Rgb(float c, float m, float y, float k, float r, float g, float b)
         {
             // Arrange
-            Cmyk input = new Cmyk(c, m, y, k);
+            var input = new Cmyk(c, m, y, k);
 
             // Act
-            Rgb output = Converter.ToRgb(input);
+            var output = Converter.ToRgb(input);
 
             // Assert
             Assert.Equal(Rgb.DefaultWorkingSpace, output.WorkingSpace);
@@ -54,10 +54,10 @@ namespace SixLabors.ImageSharp.Tests.Colorspaces
         public void Convert_Rgb_To_Cmyk(float r, float g, float b, float c, float m, float y, float k)
         {
             // Arrange
-            Rgb input = new Rgb(r, g, b);
+            var input = new Rgb(r, g, b);
 
             // Act
-            Cmyk output = Converter.ToCmyk(input);
+            var output = Converter.ToCmyk(input);
 
             // Assert
             Assert.Equal(c, output.C, FloatRoundingComparer);

tests/ImageSharp.Tests/ImageSharp.Tests.csproj

@@ -17,9 +17,9 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="CoreCompat.System.Drawing" Version="1.0.0-beta006" />
-    <PackageReference Include="xunit" Version="2.3.0" />
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