Add triangulation of polygon

FieldVisualizer/Entities/Values/Primitives/ITrianglePrimitive.cs

@@ -0,0 +1,16 @@
+using StructureHelperCommon.Models.Shapes;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FieldVisualizer.Entities.Values.Primitives
+{
+    public interface ITrianglePrimitive : IValuePrimitive
+    {
+        IPoint2D Point1 { get; set; }
+        IPoint2D Point2 { get; set; }
+        IPoint2D Point3 { get; set; }
+    }
+}