System.Drawing.RectangleF.Intersect C# (CSharp) Method

        public void Intersect(RectangleF rect)
        {
            RectangleF result = Intersect(rect, this);

            X = result.X;
            Y = result.Y;
            Width = result.Width;
            Height = result.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);
        }