Julia set: Difference between revisions

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@@ Line 204: / Line 204: @@
 =={{header|C sharp|C#}}==
 {{trans|Python}}
 <lang csharp>using System.Drawing;
 // Note: You have to add the System.Drawing assembly
 //  (right-click "references," Add Reference, Assemblies, Framework,
 //    System.Drawing, OK)
+using System.Linq;
 namespace RosettaJuliaSet
@@ Line 221: / Line 222: @@
             const int moveX = 0;
             const int moveY = 0;
+            const double cX = -0.7;
-            var bitmap = new Bitmap(w, h);
+            const double cY = 0.27015;
-            double cX = -0.7;
-            double cY = 0.27015;
             double zx, zy, tmp;
             int i;
+            var colors = (from c in Enumerable.Range(0, 256)
+                          select Color.FromArgb((c >> 5) * 36, (c >> 3 & 7) * 36, (c & 3) * 85)).ToArray();
+            var bitmap = new Bitmap(w, h);
             for (int x = 0; x < w; x++)
             {
@@ Line 241: / Line 245: @@
                         i -= 1;
                     }
-                    var c = Color.FromArgb((i >> 5) * 36, (i >> 3 & 7) * 36, (i & 3) * 85);
+                    bitmap.SetPixel(x, y, colors[i]);
-                    bitmap.SetPixel(x, y, c);
                 }
             }