dev3/psychlops/core/math/util.cs

   1 using System;\r
   2 \r
   3 namespace Psychlops\r
   4 {\r
   5 \r
   6         public static class Math\r
   7         {\r
   8                 public static readonly double PI = 3.14159265, E = 2.718281828459045;\r
   9                 public static Random random_generator;\r
  10                 static Math()\r
  11                 {\r
  12                         random_generator = new Random();\r
  13                 }\r
  14 \r
  15                 public static double abs(double x)\r
  16                 {\r
  17                         return System.Math.Abs(x);\r
  18                 }\r
  19                 public static double sin(double x)\r
  20                 {\r
  21                         return System.Math.Sin(x);\r
  22                 }\r
  23                 public static double cos(double x)\r
  24                 {\r
  25                         return System.Math.Cos(x);\r
  26                 }\r
  27                 public static double tan(double x)\r
  28                 {\r
  29                         return System.Math.Tan(x);\r
  30                 }\r
  31                 public static double sqrt(double x)\r
  32                 {\r
  33                         return System.Math.Sqrt(x);\r
  34                 }\r
  35                 public static double exp(double x)\r
  36                 {\r
  37                         return System.Math.Exp(x);\r
  38                 }\r
  39                 public static double log(double x)\r
  40                 {\r
  41                         return System.Math.Log(x);\r
  42                 }\r
  43                 public static double radius(double x, double y)\r
  44                 {\r
  45                         return System.Math.Sqrt(x * x + y * y);\r
  46                 }\r
  47 \r
  48                 public static double random()\r
  49                 {\r
  50                         return (random_generator.NextDouble());\r
  51                 }\r
  52                 public static double random(double x)\r
  53                 {\r
  54                         return (random_generator.NextDouble()) * x;\r
  55                 }\r
  56                 public static double random(double x, double y)\r
  57                 {\r
  58                         return (random_generator.NextDouble()) * (y-x) + x;\r
  59                 }\r
  60 \r
  61 \r
  62                 public static double gaussian(double x, double sigma)\r
  63                 {\r
  64                         return exp(- (x*x) / (2*sigma*sigma));\r
  65                 }\r
  66         }\r
  67 \r
  68 }