Большая реорганизация проекта

BasicGeometry/UtilityFP64.cs

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+using System;
+
+namespace BasicGeometry
+{
+    public class UtilityFP64
+    {
+        public const double EPSYLON = 4.996003611E-14;
+        public const double SQUARE_EPSYLON = 2.496005208112504E-27;
+        
+        public const double EPSYLON_EFFECTIVENESS_LIMIT = 1.0;
+
+        public const double ONE_THIRD = 0.333333333333333333;
+        public const double ONE_SIXTH = 0.166666666666666667;
+        public const double ONE_NINETH = 0.111111111111111111;
+
+        public const double GOLDEN_RATIO_HIGH = 1.61803398874989485;
+        public const double GOLDEN_RATIO_LOW = 0.61803398874989485;
+
+        public static bool IsZero(double value)
+        {
+            return -EPSYLON <= value && value <= EPSYLON;
+        }
+
+        public static bool IsUnit(double value)
+        {
+            return (1.0 - EPSYLON) <= value && value <= (1.0 + EPSYLON);
+        }
+
+        public static bool IsSqareValueUnit(double square)
+        {
+            return (1.0 - 2.0 * EPSYLON) <= square && square <= (1.0 + 2.0 * EPSYLON);
+        }
+
+        public static bool AreClose(double value1, double value2)
+        {
+            double difference = value1 - value2;
+            double squareValue1 = value1 * value1;
+            double squareValue2 = value2 * value2;
+            double squareDifference = difference * difference;
+
+            if (squareValue1 <= EPSYLON_EFFECTIVENESS_LIMIT || squareValue2 <= EPSYLON_EFFECTIVENESS_LIMIT) {
+                return squareDifference <= SQUARE_EPSYLON;
+            }
+
+            return squareDifference <= SQUARE_EPSYLON * squareValue1 && squareDifference <= SQUARE_EPSYLON * squareValue2;
+        }
+    }
+}