Рефакторинг, добавление моделей примитивов

StructureHelperLogics/Models/NdmPrimitives/PrimitiveBase.cs

@@ -0,0 +1,22 @@
+using StructureHelperLogics.Data.Shapes;
+using StructureHelperLogics.NdmCalculations.Entities;
+
+namespace StructureHelperLogics.Models.NdmPrimitives
+{
+    public abstract class PrimitiveBase<T> : IPrimitive where T : IShape
+    {
+        protected ICenter _center;
+        protected T _shape;
+
+        public ICenter Center => _center;
+        public IShape Shape => _shape;
+
+        public PrimitiveBase(ICenter center, T shape)
+        {
+            _center = center;
+            _shape = shape;
+        }
+
+        public abstract INdmPrimitive GetNdmPrimitive();
+    }
+}