Fix code style issues in ColorManipulation (#3565)

Author: JLdgu

src/MaterialDesignColors.Wpf/ColorManipulation/HsbExtensions.cs

@@ -48,7 +48,7 @@ public static Hsb ToHsb(this Color color)
         g /= 255;
         b /= 255;
 
-        double[] rgb = new[] { r, g, b };
+        double[] rgb = [r, g, b];
         double max = rgb.Max();
         double min = rgb.Min();
         double v = max;

src/MaterialDesignColors.Wpf/ColorManipulation/HslExtensions.cs

@@ -6,7 +6,7 @@ internal static class HslExtensions
 {
     public static Color ToColor(this Hsl hsl)
     {
-        double hsv_rbg(double v1, double v2, double vH)
+        static double hsv_rbg(double v1, double v2, double vH)
         {
             if (vH < 0) vH += 1;
             if (vH > 1) vH -= 1;
@@ -16,9 +16,9 @@ double hsv_rbg(double v1, double v2, double vH)
             return (v1);
         }
 
-        var h = hsl.H * (1.0 / 360);
-        var s = hsl.S * (1.0 / 100);
-        var l = hsl.L * (1.0 / 100);
+        double h = hsl.H * (1.0 / 360);
+        double s = hsl.S * (1.0 / 100);
+        double l = hsl.L * (1.0 / 100);
 
         double r, g, b;
         if (s == 0)
@@ -33,7 +33,7 @@ double hsv_rbg(double v1, double v2, double vH)
             if (l < 0.5) var_2 = l * (1 + s);
             else var_2 = (l + s) - (s * l);
 
-            var var_1 = 2 * l - var_2;
+            double var_1 = 2 * l - var_2;
 
             r = 255 * hsv_rbg(var_1, var_2, h + (1.0 / 3));
             g = 255 * hsv_rbg(var_1, var_2, h);

src/MaterialDesignColors.Wpf/ColorManipulation/LabExtensions.cs

@@ -9,7 +9,7 @@ public static Lab ToLab(this Color c)
 
     public static Lab ToLab(this Xyz xyz)
     {
-        double xyz_lab(double v)
+        static double xyz_lab(double v)
         {
             if (v > LabConstants.e)
                 return Math.Pow(v, 1 / 3.0);

src/MaterialDesignColors.Wpf/ColorManipulation/XyzExtensions.cs

@@ -20,15 +20,15 @@ byte clip(double d)
             if (d > 255) return 255;
             return (byte)Math.Round(d);
         }
-        var r = xyz_rgb(3.2404542 * xyz.X - 1.5371385 * xyz.Y - 0.4985314 * xyz.Z);
-        var g = xyz_rgb(-0.9692660 * xyz.X + 1.8760108 * xyz.Y + 0.0415560 * xyz.Z);
-        var b = xyz_rgb(0.0556434 * xyz.X - 0.2040259 * xyz.Y + 1.0572252 * xyz.Z);
+        double r = xyz_rgb(3.2404542 * xyz.X - 1.5371385 * xyz.Y - 0.4985314 * xyz.Z);
+        double g = xyz_rgb(-0.9692660 * xyz.X + 1.8760108 * xyz.Y + 0.0415560 * xyz.Z);
+        double b = xyz_rgb(0.0556434 * xyz.X - 0.2040259 * xyz.Y + 1.0572252 * xyz.Z);
 
         return Color.FromRgb(clip(r), clip(g), clip(b));
     }
     public static Xyz ToXyz(this Color c)
     {
-        double rgb_xyz(double v)
+        static double rgb_xyz(double v)
         {
             v /= 255;
             if (v > 0.04045)
@@ -37,29 +37,29 @@ double rgb_xyz(double v)
                 return v / 12.92;
         }
 
-        var r = rgb_xyz(c.R);
-        var g = rgb_xyz(c.G);
-        var b = rgb_xyz(c.B);
+        double r = rgb_xyz(c.R);
+        double g = rgb_xyz(c.G);
+        double b = rgb_xyz(c.B);
 
-        var x = 0.4124564 * r + 0.3575761 * g + 0.1804375 * b;
-        var y = 0.2126729 * r + 0.7151522 * g + 0.0721750 * b;
-        var z = 0.0193339 * r + 0.1191920 * g + 0.9503041 * b;
+        double x = 0.4124564 * r + 0.3575761 * g + 0.1804375 * b;
+        double y = 0.2126729 * r + 0.7151522 * g + 0.0721750 * b;
+        double z = 0.0193339 * r + 0.1191920 * g + 0.9503041 * b;
         return new Xyz(x, y, z);
     }
 
     public static Xyz ToXyz(this Lab lab)
     {
-        double lab_xyz(double d)
+        static double lab_xyz(double d)
         {
             if (d > LabConstants.eCubedRoot)
                 return d * d * d;
             else
                 return (116 * d - 16) / LabConstants.k;
         }
 
-        var y = (lab.L + 16.0) / 116.0;
-        var x = double.IsNaN(lab.A) ? y : y + lab.A / 500.0;
-        var z = double.IsNaN(lab.B) ? y : y - lab.B / 200.0;
+        double y = (lab.L + 16.0) / 116.0;
+        double x = double.IsNaN(lab.A) ? y : y + lab.A / 500.0;
+        double z = double.IsNaN(lab.B) ? y : y - lab.B / 200.0;
 
         y = LabConstants.WhitePointY * lab_xyz(y);
         x = LabConstants.WhitePointX * lab_xyz(x);