Merge branch 'master' into AsSpan_Slice_parameters

Author: brianpopow

src/ImageSharp/Color/Color.Conversions.cs

@@ -17,81 +17,201 @@ public readonly partial struct Color
         /// </summary>
         /// <param name="pixel">The <see cref="Rgba64"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Rgba64 pixel) => this.data = pixel;
+        public Color(Rgba64 pixel)
+        {
+            this.data = pixel;
+            this.boxedHighPrecisionPixel = null;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Color"/> struct.
+        /// </summary>
+        /// <param name="pixel">The <see cref="Rgb48"/> containing the color information.</param>
+        [MethodImpl(InliningOptions.ShortMethod)]
+        public Color(Rgb48 pixel)
+        {
+            this.data = new Rgba64(pixel.R, pixel.G, pixel.B, ushort.MaxValue);
+            this.boxedHighPrecisionPixel = null;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Color"/> struct.
+        /// </summary>
+        /// <param name="pixel">The <see cref="La32"/> containing the color information.</param>
+        [MethodImpl(InliningOptions.ShortMethod)]
+        public Color(La32 pixel)
+        {
+            this.data = new Rgba64(pixel.L, pixel.L, pixel.L, pixel.A);
+            this.boxedHighPrecisionPixel = null;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Color"/> struct.
+        /// </summary>
+        /// <param name="pixel">The <see cref="L16"/> containing the color information.</param>
+        [MethodImpl(InliningOptions.ShortMethod)]
+        public Color(L16 pixel)
+        {
+            this.data = new Rgba64(pixel.PackedValue, pixel.PackedValue, pixel.PackedValue, ushort.MaxValue);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="pixel">The <see cref="Rgba32"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Rgba32 pixel) => this.data = new Rgba64(pixel);
+        public Color(Rgba32 pixel)
+        {
+            this.data = new Rgba64(pixel);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="pixel">The <see cref="Argb32"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Argb32 pixel) => this.data = new Rgba64(pixel);
+        public Color(Argb32 pixel)
+        {
+            this.data = new Rgba64(pixel);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="pixel">The <see cref="Bgra32"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Bgra32 pixel) => this.data = new Rgba64(pixel);
+        public Color(Bgra32 pixel)
+        {
+            this.data = new Rgba64(pixel);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="pixel">The <see cref="Rgb24"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Rgb24 pixel) => this.data = new Rgba64(pixel);
+        public Color(Rgb24 pixel)
+        {
+            this.data = new Rgba64(pixel);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="pixel">The <see cref="Bgr24"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Bgr24 pixel) => this.data = new Rgba64(pixel);
+        public Color(Bgr24 pixel)
+        {
+            this.data = new Rgba64(pixel);
+            this.boxedHighPrecisionPixel = null;
+        }
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Color"/> struct.
         /// </summary>
         /// <param name="vector">The <see cref="Vector4"/> containing the color information.</param>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public Color(Vector4 vector) => this.data = new Rgba64(vector);
+        public Color(Vector4 vector)
+        {
+            vector = Numerics.Clamp(vector, Vector4.Zero, Vector4.One);
+            this.boxedHighPrecisionPixel = new RgbaVector(vector.X, vector.Y, vector.Z, vector.W);
+            this.data = default;
+        }
 
         /// <summary>
         /// Converts a <see cref="Color"/> to <see cref="Vector4"/>.
         /// </summary>
         /// <param name="color">The <see cref="Color"/>.</param>
         /// <returns>The <see cref="Vector4"/>.</returns>
-        public static explicit operator Vector4(Color color) => color.data.ToVector4();
+        public static explicit operator Vector4(Color color) => color.ToVector4();
 
         /// <summary>
         /// Converts an <see cref="Vector4"/> to <see cref="Color"/>.
         /// </summary>
         /// <param name="source">The <see cref="Vector4"/>.</param>
         /// <returns>The <see cref="Color"/>.</returns>
         [MethodImpl(InliningOptions.ShortMethod)]
-        public static explicit operator Color(Vector4 source) => new Color(source);
+        public static explicit operator Color(Vector4 source) => new(source);
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Rgba32 ToRgba32() => this.data.ToRgba32();
+        internal Rgba32 ToRgba32()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToRgba32();
+            }
+
+            Rgba32 value = default;
+            this.boxedHighPrecisionPixel.ToRgba32(ref value);
+            return value;
+        }
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Bgra32 ToBgra32() => this.data.ToBgra32();
+        internal Bgra32 ToBgra32()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToBgra32();
+            }
+
+            Bgra32 value = default;
+            value.FromScaledVector4(this.boxedHighPrecisionPixel.ToScaledVector4());
+            return value;
+        }
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Argb32 ToArgb32() => this.data.ToArgb32();
+        internal Argb32 ToArgb32()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToArgb32();
+            }
+
+            Argb32 value = default;
+            value.FromScaledVector4(this.boxedHighPrecisionPixel.ToScaledVector4());
+            return value;
+        }
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Rgb24 ToRgb24() => this.data.ToRgb24();
+        internal Rgb24 ToRgb24()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToRgb24();
+            }
+
+            Rgb24 value = default;
+            value.FromScaledVector4(this.boxedHighPrecisionPixel.ToScaledVector4());
+            return value;
+        }
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Bgr24 ToBgr24() => this.data.ToBgr24();
+        internal Bgr24 ToBgr24()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToBgr24();
+            }
+
+            Bgr24 value = default;
+            value.FromScaledVector4(this.boxedHighPrecisionPixel.ToScaledVector4());
+            return value;
+        }
 
         [MethodImpl(InliningOptions.ShortMethod)]
-        internal Vector4 ToVector4() => this.data.ToVector4();
+        internal Vector4 ToVector4()
+        {
+            if (this.boxedHighPrecisionPixel is null)
+            {
+                return this.data.ToScaledVector4();
+            }
+
+            return this.boxedHighPrecisionPixel.ToScaledVector4();
+        }
     }
 }