Add value diagram windows and view models

StructureHelperCommon/Models/Shapes/Logics/IGetPointListByRange.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Shapes
+{
+    public interface IGetPointListByRange
+    {
+        int StepNumber { get; set; }
+        List<IPoint2D> GetPoints(IPoint2DRange range);
+    }
+}