Added rectangle KeyGroup

Helper/RectangleHelper.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Drawing;
+
+namespace CUE.NET.Helper
+{
+    public static class RectangleHelper
+    {
+        public static RectangleF CreateRectangleFromPoints(PointF point1, PointF point2)
+        {
+            float posX = Math.Min(point1.X, point2.X);
+            float posY = Math.Min(point1.Y, point2.Y);
+            float width = Math.Max(point1.X, point2.X) - posX;
+            float height = Math.Max(point1.Y, point2.Y) - posY;
+
+            return new RectangleF(posX, posY, width, height);
+        }
+
+        public static RectangleF CreateRectangleFromRectangles(RectangleF point1, RectangleF point2)
+        {
+            float posX = Math.Min(point1.X, point2.X);
+            float posY = Math.Min(point1.Y, point2.Y);
+            float width = Math.Max(point1.X + point1.Width, point2.X + point2.Width) - posX;
+            float height = Math.Max(point1.Y + point1.Height, point2.Y + point2.Height) - posY;
+
+            return new RectangleF(posX, posY, width, height);
+        }
+
+        public static float CalculateIntersectPercentage(RectangleF rect, RectangleF referenceRect)
+        {
+            if (rect.IsEmpty || referenceRect.IsEmpty) return 0;
+
+            referenceRect.Intersect(rect); // replace referenceRect with intersect
+            return referenceRect.IsEmpty ? 0 : (referenceRect.Width * referenceRect.Height) / (rect.Width * rect.Height);
+        }
+    }
+}