X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=dev4%2Fpsychlops%2Fcore%2Fmath%2Futil.cs;fp=dev4%2Fpsychlops%2Fcore%2Fmath%2Futil.cs;h=7f498d359280489b33e36dcbc38704b07f922625;hb=cb8916a7a5cd929f57b3f9edd99209680db90546;hp=0000000000000000000000000000000000000000;hpb=e05ab8e68d381f8f5c9a2ddb7c63b89a7bb6371a;p=psychlops%2Fsilverlight.git

diff --git a/dev4/psychlops/core/math/util.cs b/dev4/psychlops/core/math/util.cs
new file mode 100644
index 0000000..7f498d3
--- /dev/null
+++ b/dev4/psychlops/core/math/util.cs
@@ -0,0 +1,68 @@
+using System;
+
+namespace Psychlops
+{
+
+	public static class Math
+	{
+		public static readonly double PI = 3.14159265, E = 2.718281828459045;
+		public static Random random_generator;
+		static Math()
+		{
+			random_generator = new Random();
+		}
+
+		public static double abs(double x)
+		{
+			return System.Math.Abs(x);
+		}
+		public static double sin(double x)
+		{
+			return System.Math.Sin(x);
+		}
+		public static double cos(double x)
+		{
+			return System.Math.Cos(x);
+		}
+		public static double tan(double x)
+		{
+			return System.Math.Tan(x);
+		}
+		public static double sqrt(double x)
+		{
+			return System.Math.Sqrt(x);
+		}
+		public static double exp(double x)
+		{
+			return System.Math.Exp(x);
+		}
+		public static double log(double x)
+		{
+			return System.Math.Log(x);
+		}
+		public static double radius(double x, double y)
+		{
+			return System.Math.Sqrt(x * x + y * y);
+		}
+
+		public static double random()
+		{
+			return (random_generator.NextDouble());
+		}
+		public static double random(double x)
+		{
+			return (random_generator.NextDouble()) * x;
+		}
+		public static double random(double x, double y)
+		{
+			return (random_generator.NextDouble()) * (y-x) + x;
+		}
+
+
+		public static double gaussian(double x, double sigma)
+		{
+			return exp(- (x*x) / (2*sigma*sigma));
+		}
+	}
+
+}
\ No newline at end of file