Add triangulation of polygon

DataAccess/DTOs/Converters/Shapes/LinePolygonFromDTOConvertStrategy.cs

@@ -0,0 +1,43 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Shapes;
+
+namespace DataAccess.DTOs
+{
+    public class LinePolygonFromDTOConvertStrategy : ConvertStrategy<ILinePolygonShape, ILinePolygonShape>
+    {
+        private IUpdateStrategy<ILinePolygonShape> updateStrategy;
+        private IConvertStrategy<IVertex, IVertex> vertexConvertStrategy;
+        private LinePolygonShape newItem;
+
+        public LinePolygonFromDTOConvertStrategy(IUpdateStrategy<ILinePolygonShape> updateStrategy)
+        {
+            this.updateStrategy = updateStrategy;
+        }
+
+        public LinePolygonFromDTOConvertStrategy(IBaseConvertStrategy baseConvertStrategy) : base(baseConvertStrategy)
+        {
+            updateStrategy = new LinePolygonShapeUpdateStrategy() { UpdateChildren = false };
+            vertexConvertStrategy = new VertexFtomDTOConvertStrategy(this);
+        }
+
+        public override ILinePolygonShape GetNewItem(ILinePolygonShape source)
+        {
+            ChildClass = this;
+            if (source is not LinePolygonShapeDTO sourceDTO)
+            {
+                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(source) + ": source line polygon is not DTO object");
+            }
+            newItem = new(sourceDTO.Id);
+            updateStrategy.Update(newItem, sourceDTO);
+            newItem.Clear();
+            foreach (var item in source.Vertices)
+            {
+                IVertex newVertex = vertexConvertStrategy.Convert(item);
+                newItem.AddVertex(newVertex);
+            }
+            NewItem = newItem;
+            return NewItem;
+        }
+    }
+}