Encapsulate calculations and graph logic

13_Bounce/csharp/IReadWriteExtensions.cs

@@ -0,0 +1,11 @@
+namespace Bounce;
+
+internal static class IReadWriteExtensions
+{
+    internal static float ReadParameter(this IReadWrite io, string parameter)
+    {
+        var value = io.ReadNumber(parameter);
+        io.WriteLine();
+        return value;
+    }
+}