Force crack calculator was fixed

StructureHelperLogics/NdmCalculations/Cracking/IIsSectionCrackedByFactorLogic.cs

@@ -0,0 +1,34 @@
+using LoaderCalculator.Data.Ndms;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Forces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    /// <summary>
+    /// Check crack appearence beetwen start force tuple and end force tuple
+    /// </summary>
+    public interface IIsSectionCrackedByFactorLogic : ILogic
+    {
+        IIsSectionCrackedByForceLogic IsSectionCrackedByForceLogic { get; set; }
+        /// <summary>
+        /// Start force tupple
+        /// </summary>
+        IForceTuple StartTuple { get; set; }
+        /// <summary>
+        /// End force tuple
+        /// </summary>
+        IForceTuple EndTuple { get; set; }
+
+        /// <summary>
+        /// Returns result of checking of crack appearence
+        /// </summary>
+        /// <param name="factor">factor beetwen start and end tuple, 0 is start tuple, 1 is end tuple</param>
+        /// <returns>true when section is cracked</returns>
+        bool IsSectionCracked(double factor);
+    }
+}