Updates some geometirc predicates comments

Readme.md

@@ -9,7 +9,9 @@ RobustGeometry.NET is a computational geometry software project with the followi
 
 ## Current status
 
-* A C# port of the robust predicates of Shewchuk is in place. It is complete but needs a bit more testing. To test this and understand the status of floating-point computation in .NET, there are some utility classes in the test project to access the Intel x86 FPU control states, and manipulate floating-point binary representations of doubles.
+* A C# port of the robust predicates of Shewchuk is done. It is complete but needs a bit more testing. To test this and understand the status of floating-point computation in .NET, there are some utility classes in the test project to access the Intel x86 FPU control states, and manipulate floating-point binary representations of doubles.
+
+	You are welcome to copy the two files `ExactArithmetic.cs` and `GeometricPredicates.cs` from `RobustArithmetic\Predicates` if you want to use the C# version of Shewchuk's predicates.c in another project.
 
 ## License
 

RobustGeometry.Test/Predicates.Test/InCircleTests.cs

@@ -9,6 +9,10 @@ namespace RobustGeometry.Test.Predicates.Test
     [TestClass]
     public class InCircleTests
     {
+        // Try a bit with (1507029.9878 518325.7547, 1507022.1120341457 518332.8225183258,
+        // 1507029.9833 518325.7458, 1507029.9896965567 518325.744909031)
+
+
         [TestMethod]
         public void TestMethod1()
         {

RobustGeometry/Predicates/GeometricPredicates.cs

@@ -1074,7 +1074,10 @@ static double Orient3DAdapt(double[] pa, double[] pb, double[] pc, double[] pd,
         /*  nearly so.                                                               */
         /*                                                                           */
         /*****************************************************************************/
-
+        // |pax pay pax^2+pay^2 1|
+        // |pbx pby pbx^2+pby^2 1|
+        // |pcx pcy pcx^2+pcy^2 1|
+        // |pdx pdy pdx^2+pdy^2 1|
         public static double InCircleFast(double[] pa, double[] pb, double[] pc, double[] pd)
         {
             double adx, ady, bdx, bdy, cdx, cdy;