Move Common functionality to Core project & rendering and Model support as well

PckStudio.Core/Extensions/ImageSection.cs

@@ -0,0 +1,37 @@
+using System.Drawing;
+
+namespace PckStudio.Core.Extensions
+{
+    internal struct ImageSection
+    {
+        public readonly Size Size;
+        public readonly Point Point;
+        public readonly Rectangle Area;
+
+        internal ImageSection(Size originalSize, int index, ImageLayoutDirection layoutDirection)
+        {
+            switch(layoutDirection)
+            {
+                case ImageLayoutDirection.Horizontal:
+                    {
+                        Size = new Size(originalSize.Height, originalSize.Height);
+                        Point = new Point(index * originalSize.Height, 0);
+                    }
+                    break;
+
+                case ImageLayoutDirection.Vertical:
+                    {
+                        Size = new Size(originalSize.Width, originalSize.Width);
+                        Point = new Point(0, index * originalSize.Width);
+                    }
+                    break;
+
+                default:
+                    Size = Size.Empty;
+                    Point = new Point(-1, -1);
+                    break;
+            }
+            Area = new Rectangle(Point, Size);
+        }
+    }
+}