Merge pull request #18 from LaFut/c#sdk

Updated C# sdk: added absolute positioning, drawing arcs and sectors, and decimal separator

clients/csharp/VisualClient.cs

@@ -1,8 +1,11 @@
+using System;
+using System.Globalization;
 using System.IO;
 using System.Net.Sockets;
 using System.Text;
+using System.Threading;
 
-namespace Com.CodeGame.CodeRacing2015.DevKit.CSharpCgdk
+namespace Com.CodeGame.CodeWizards2016.DevKit.CSharpCgdk
 {
     public sealed class VisualClient
     {
@@ -21,6 +24,10 @@ public VisualClient(string host, int port)
             };
 
             _writer = new BinaryWriter(_client.GetStream());
+
+            CultureInfo newCInfo = (CultureInfo) Thread.CurrentThread.CurrentCulture.Clone();
+            newCInfo.NumberFormat.NumberDecimalSeparator = ".";
+            Thread.CurrentThread.CurrentCulture = newCInfo;
         }
 
         //---------------------------------------------------------------------
@@ -43,6 +50,13 @@ public void BeginPost()
             SendCommand("begin post");
         }
 
+        /// <summary>
+        /// start queueing commands to be displayed on the absolute coordinates
+        /// </summary>
+        public void beginAbs() {
+            SendCommand("begin abs");
+        }
+
         /// <summary>
         /// Mark either "pre" queue of commands as ready to be displayed
         /// </summary>
@@ -59,6 +73,14 @@ public void EndPost()
             SendCommand("end post");
         }
 
+        /// <summary>
+        // mark either "abs" queue of commands as ready to be displayed
+        /// <summary>
+        public void endAbs() {
+           SendCommand("end abs");
+       }
+
+
         /// <summary>
         /// Draw a circle at (x, y) with radius r and color color
         /// </summary>
@@ -119,6 +141,23 @@ public void Text(double x, double y, string msg, float r = 0f, float g = 0f, flo
             SendCommand($"text {x} {y} {msg} {r} {g} {b}");
         }
 
+        /// <summary>
+        /// draw a arc with center at (x, y), radius radius and angle arcAngle, started from startAngle with color color, angles in radians
+        /// < /summary>
+        public void Arc(double x, double y, double radius, double startAngle, double arcAngle, float r = 0f, float g = 0f, float b = 0f) {
+	    ValidateColor(r, g, b);
+            SendCommand($"arc {x} {y} {radius} {startAngle} {arcAngle} {r} {g} {b}");
+        }
+
+        /// <summary>
+        /// draw a filled arc with center at (x, y), radius radius and angle arcAngle, started from startAngle with color color, angles in radians
+        /// </summary>
+        public void FillArc(double x, double y, double radius, double startAngle, double arcAngle, float r = 0f, float g = 0f, float b = 0f) {
+	    ValidateColor(r, g, b);
+            SendCommand($"fill_arc {x} {y} {radius} {startAngle} {arcAngle} {r} {g} {b}");
+        }
+
+
         //---------------------------------------------------------------------
         // Helpers
         //---------------------------------------------------------------------