Add Force DTOs

StructureHelperCommon/Models/Forces/StrainTuple.cs

@@ -1,5 +1,6 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Services.Forces;
+using System;
 
 namespace StructureHelperCommon.Models.Forces
 {
@@ -8,6 +9,8 @@ namespace StructureHelperCommon.Models.Forces
     {
         private readonly IUpdateStrategy<IForceTuple> updateStrategy = new ForceTupleUpdateStrategy();
         /// <inheritdoc/>
+        public Guid Id { get; }
+        /// <inheritdoc/>
         public double Mx { get; set; }
         /// <inheritdoc/>
         public double My { get; set; }
@@ -20,6 +23,16 @@ namespace StructureHelperCommon.Models.Forces
         /// <inheritdoc/>
         public double Mz { get; set; }
 
+        public StrainTuple(Guid id)
+        {
+            Id = id;
+        }
+
+        public StrainTuple() : this (Guid.NewGuid())
+        {
+            
+        }
+
         public void Clear()
         {
             Mx = 0d;