From f945e35136e653bb99b2aa92a4aa407c1ffaf1a5 Mon Sep 17 00:00:00 2001
From: Paul Chote <pchote@users.noreply.github.com>
Date: Sat, 7 Nov 2015 18:55:03 +0000
Subject: [PATCH] Fix CellRegion.BoundingRegion behaviour.

---
 OpenRA.Game/Map/CellRegion.cs | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/OpenRA.Game/Map/CellRegion.cs b/OpenRA.Game/Map/CellRegion.cs
index c0a5ffa2c2..7a973e76b2 100644
--- a/OpenRA.Game/Map/CellRegion.cs
+++ b/OpenRA.Game/Map/CellRegion.cs
@@ -53,23 +53,24 @@ namespace OpenRA
 			if (cells == null || !cells.Any())
 				throw new ArgumentException("cells must not be null or empty.", "cells");
 
-			var minX = int.MaxValue;
-			var minY = int.MaxValue;
-			var maxX = int.MinValue;
-			var maxY = int.MinValue;
+			var minU = int.MaxValue;
+			var minV = int.MaxValue;
+			var maxU = int.MinValue;
+			var maxV = int.MinValue;
 			foreach (var cell in cells)
 			{
-				if (minX > cell.X)
-					minX = cell.X;
-				if (maxX < cell.X)
-					maxX = cell.X;
-				if (minY > cell.Y)
-					minY = cell.Y;
-				if (maxY < cell.Y)
-					maxY = cell.Y;
+				var uv = cell.ToMPos(shape);
+				if (minU > uv.U)
+					minU = uv.U;
+				if (maxU < uv.U)
+					maxU = uv.U;
+				if (minV > uv.V)
+					minV = uv.V;
+				if (maxV < uv.V)
+					maxV = uv.V;
 			}
 
-			return new CellRegion(shape, new CPos(minX, minY), new CPos(maxX, maxY));
+			return new CellRegion(shape, new MPos(minU, minV).ToCPos(shape), new MPos(maxU, maxV).ToCPos(shape));
 		}
 
 		public bool Contains(CellRegion region)