Tests of crack calculator were added

StructureHelperLogics/NdmCalculations/Primitives/IPointPrimitive.cs

@@ -8,6 +8,9 @@ using System.Threading.Tasks;
 
 namespace StructureHelperLogics.NdmCalculations.Primitives
 {
+    /// <summary>
+    /// Geometry primitive of point
+    /// </summary>
     public interface IPointPrimitive : INdmPrimitive, IPointShape
     {
     }

StructureHelperLogics/NdmCalculations/Primitives/IRebarPrimitive.cs

@@ -3,6 +3,9 @@ using StructureHelperLogics.NdmCalculations.Triangulations;
 
 namespace StructureHelperLogics.NdmCalculations.Primitives
 {
+    /// <summary>
+    /// Geometry primitive of rebar (bar of reinforcement)
+    /// </summary>
     public interface IRebarPrimitive : IPointPrimitive, IHasHostPrimitive
     {
         Ndm GetConcreteNdm(ITriangulationOptions triangulationOptions);