minor change & rename

Author: epsi1on

BriefFiniteElementNet.Common/MathUtil.cs

@@ -9,8 +9,8 @@ public static class MathUtil
         /// <summary>
         /// The epsilon, threshold using for determining whether two mumbers are equal or not
         /// </summary>
-        public static double Epsilon = 1e-8;
-
+        //public static double Epsilon = 1e-8;
+        /*
         /// <summary>
         /// Determines val1 equals val2 or not.
         /// </summary>
@@ -21,6 +21,20 @@ public static class MathUtil
         /// true if val1 equals val2 else false
         /// </returns>
         public static bool Equals(double val1, double val2, double epsilon)
+        {
+            return FEquals(val1, val2, epsilon);
+        }*/
+
+        /// <summary>
+        /// Determines val1 equals val2 or not with fuzzy approach
+        /// </summary>
+        /// <param name="val1">The val1.</param>
+        /// <param name="val2">The val2.</param>
+        /// <param name="epsilon">The epsilon.</param>
+        /// <returns>
+        /// true if val1 equals val2 else false
+        /// </returns>
+        public static bool FEquals(double val1, double val2, double epsilon=0)
         {
             var diff = Math.Abs(val1 - val2);
 

BriefFiniteElementNet.TestConsole/Program.cs

@@ -38,6 +38,7 @@ static void Main(string[] args)
 
             Validation.GithubIssues.Issue96.Run1();
 
+            return;
             TestTet();
             //TestTriangle();
             //Validation.GithubIssues.Issue50.Run1();

BriefFiniteElementNet.Validation/GithubIssues/Issue96.cs

@@ -29,7 +29,7 @@ public static void Run1()
 
             (m1.Elements["r1"] as BarElement).Material = BriefFiniteElementNet.Materials.UniformIsotropicMaterial.CreateFromYoungPoisson(210 * Math.Pow(10, 9), 0.3);
 
-            m1.Solve();
+            m1.Solve_MPC();
 
             var r11 = m1.Nodes[0].GetSupportReaction();
 

BriefFiniteElementNet/Elements/AnisotropicMaterialInfo.cs

@@ -47,9 +47,9 @@ public bool HasValidMechanizalProperties()
 
             var flags = new bool[]
             {
-                Common.MathUtil.Equals(nu_yz / ey, nu_zy / ez, tol),
-                Common.MathUtil.Equals(nu_zx / ez, nu_xz / ex, tol),
-                Common.MathUtil.Equals(nu_yx / ey, nu_xy / ex, tol),
+                Common.MathUtil.FEquals(nu_yz / ey, nu_zy / ez, tol),
+                Common.MathUtil.FEquals(nu_zx / ez, nu_xz / ex, tol),
+                Common.MathUtil.FEquals(nu_yx / ey, nu_xy / ex, tol),
             };
 
             return flags.All(i => i);

BriefFiniteElementNet/Utils/CalcUtil.cs

@@ -850,7 +850,7 @@ public static void GetBarTransformationMatrix(Vector v, double _webRotation, Mat
 
             //var v = this.EndNode.Location - this.StartNode.Location;
 
-            if (MathUtil.Equals(0, v.X) && MathUtil.Equals(0, v.Y))
+            if (MathUtil.FEquals(0, v.X) && MathUtil.FEquals(0, v.Y))
             {
                 if (v.Z > 0)
                 {