fix: Rectangle.Intersect

Author: 7aGiven

src/Rectangle.cs

@@ -397,16 +397,21 @@ public static void Intersect(
 			ref Rectangle value2,
 			out Rectangle result
 		) {
-			int right1 = value1.X + value1.Width;	// inline value1.Right
-			int right2 = value2.X + value2.Width;	// inline value2.Right
-			int bottom1 = value1.Y + value1.Height;	// inline value1.Bottom
-			int bottom2 = value2.Y + value2.Height;	// inline value2.Bottom
-			if (value1.X < right2 && value2.X < right1 && value1.Y < bottom2 && value2.Y < bottom1)
+			int right1 = value1.X + value1.Width; // inline Rectangle.Right
+			int right2 = value2.X + value2.Width; // inline Rectangle.Right
+			int bottom1 = value1.Y + value1.Height; // inline Rectangle.Bottom
+			int bottom2 = value2.Y + value2.Height; // inline Rectangle.Bottom
+
+			int left = value1.X > value2.X ? value1.X : value2.X;
+			int top = value1.Y > value2.Y ? value1.Y : value2.Y;
+			int right = right1 < right2 ? right1 : right2;
+			int bottom = bottom1 < bottom2 ? bottom1 : bottom2;
+			if (left < right && top < bottom)
 			{
-				result.X = Math.Max(value1.X, value2.X);
-				result.Y = Math.Max(value1.Y, value2.Y);
-				result.Width = Math.Min(right1, right2) - result.X;
-				result.Height = Math.Min(bottom1, bottom2) - result.Y;
+				result.X = left;
+				result.Y = top;
+				result.Width = right - left;
+				result.Height = bottom - top;
 			}
 			else
 			{