Add value diagram windows and view models

StructureHelperCommon/Models/Shapes/Logics/RectangleToLinePolygonConvertStrategy.cs

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+using System;
+
+namespace StructureHelperCommon.Models.Shapes
+{
+    public class RectangleToLinePolygonConvertStrategy : IShapeConvertStrategy<LinePolygonShape, IRectangleShape>
+    {
+        private IRectangleShape rectangle;
+
+        public double Dx { get; set; } = 0.0;
+        public double Dy { get; set; } = 0.0;
+        public double Scale { get; set; } = 1.0;
+
+
+        public LinePolygonShape Convert(IRectangleShape source)
+        {
+            rectangle = source;
+            LinePolygonShape polygon = new(Guid.NewGuid());
+            polygon.AddVertex(GetVertex(-1.0, 1.0));
+            polygon.AddVertex(GetVertex(1.0, 1.0));
+            polygon.AddVertex(GetVertex(1.0, -1.0));
+            polygon.AddVertex(GetVertex(-1.0, -1.0));
+            polygon.IsClosed = true;
+            return polygon;
+        }
+
+        private Vertex GetVertex(double kx, double ky)
+        {
+            double x = (kx * rectangle.Width / 2 + Dx) * Scale;
+            double y = (ky * rectangle.Height / 2 + Dy) * Scale;
+            return new(x, y);
+        }
+    }
+}