Fixed incorrect assignment in the xyz to labch conversion.

Author: MatinxHT

Controller/ChromaticityConversion.cs

@@ -139,33 +139,33 @@ public static CIELABCH XYZ2Labch(CIEXYZ XYZ, Standardilluminant illuminant, Stan
             b = 200.0 * (temY - temZ);
 
             if (L < 0) L = 0.00;
-            //C = Math.Sqrt(a * a + b * b);
-            //if ((a == 0) && (b > 0))
-            //    H = 90;
-            //else if ((a == 0) && (b < 0))
-            //    H = 270;
-            //else if ((a >= 0) && (b == 0))
-            //    H = 0;
-            //else if ((a < 0) && (b == 0))
-            //    H = 180;
-            //else
-            //{
-            //    H = Math.Atan(b / a);
-            //    H = H * 57.3;
-            //    if ((a > 0) && (b > 0))
-            //        H = H;
-            //    else if (a < 0)
-            //        H = 180 + H;
-            //    else
-            //        H = 360 + H;
-            //}
+            C = Math.Sqrt(a * a + b * b);
+            if ((a == 0) && (b > 0))
+                H = 90;
+            else if ((a == 0) && (b < 0))
+                H = 270;
+            else if ((a >= 0) && (b == 0))
+                H = 0;
+            else if ((a < 0) && (b == 0))
+                H = 180;
+            else
+            {
+                H = Math.Atan(b / a);
+                H = H * 57.3;
+                if ((a > 0) && (b > 0))
+                    H = H;
+                else if (a < 0)
+                    H = 180 + H;
+                else
+                    H = 360 + H;
+            }
 
             double[] labch = new double[7];
-            labch[0] = Math.Round(labch[0], 2);
-            labch[1] = Math.Round(labch[1], 2);
-            labch[2] = Math.Round(labch[2], 2);
-            //labch[3] = C;
-            //labch[4] = H;
+            labch[0] = Math.Round(L, 2);
+            labch[1] = Math.Round(a, 2);
+            labch[2] = Math.Round(b, 2);
+            labch[3] = C;
+            labch[4] = H;
 
             //double[] lab = new double[3];
             //lab[0] = Math.Round(labch[0], 2); // 将 L 值保留小数点后两位