From d43d8bf59730ee2911dd141ef0bb5847e7b56d73 Mon Sep 17 00:00:00 2001
From: Anatoliy Golubev <darth.naihil@gmail.com>
Date: Tue, 31 Mar 2015 17:59:11 +0300
Subject: [PATCH] Fix invalid calculation of rubberband boundingRect

---
 src/gui/qgsrubberband.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/gui/qgsrubberband.cpp b/src/gui/qgsrubberband.cpp
index 7cc1e186155..1e9d1d80cba 100644
--- a/src/gui/qgsrubberband.cpp
+++ b/src/gui/qgsrubberband.cpp
@@ -547,7 +547,16 @@ void QgsRubberBand::updateRect()
       QgsPoint p( it->x() + mTranslationOffsetX, it->y() + mTranslationOffsetY );
       p = m2p.transform( p );
       QgsRectangle rect( p.x() - w, p.y() - w, p.x() + w, p.y() + w );
-      r.combineExtentWith( &rect );
+
+      if ( r.isEmpty() )
+      {
+        // Get rectangle of the first point
+        r = rect;
+      }
+      else
+      {
+        r.combineExtentWith( &rect );
+      }
     }
   }