fix for bug where feature splitting was not possible if bounding box of split line was a line

mhugent · mhugent · commit 4e6a87d04cfa · 2008-02-03T13:33:28.000Z
git-svn-id: http://svn.osgeo.org/qgis/trunk@8100 c8812cc2-4d05-0410-92ff-de0c093fc19c
diff --git a/src/core/qgsvectorlayer.cpp b/src/core/qgsvectorlayer.cpp
@@ -1722,7 +1722,21 @@ int QgsVectorLayer::splitFeatures(const QList<QgsPoint>& splitLine, bool topolog
       
       if(bBox.isEmpty())
 	{
-	  return 2;
+	  //if the bbox is a line, try to make a square out of it
+	  if(!bBox.width() > 0.0 && bBox.height() > 0)
+	    {
+	      bBox.setXmin(bBox.xMin() - bBox.height()/2);
+	      bBox.setXmax(bBox.xMax() + bBox.height()/2);
+	    }
+	  else if(!bBox.height() > 0.0 && bBox.width() > 0)
+	    {
+	      bBox.setYmin(bBox.yMin() - bBox.width()/2);
+	      bBox.setYmax(bBox.yMax() + bBox.width()/2);
+	    }
+	  else
+	    {
+	      return 2;
+	    }
 	}
       featuresInRectangle(bBox, featureList);
     }
