IndexExtent fix

Hugo Mercier · Hugo Mercier · commit c5512a4ba388 · 2019-01-18T10:53:53.000+01:00
Backport from cd1f316
diff --git a/src/core/qgssnappingutils.cpp b/src/core/qgssnappingutils.cpp
@@ -89,9 +89,12 @@ bool QgsSnappingUtils::isIndexPrepared( QgsVectorLayer *vl, const QgsRectangle &
   if ( mStrategy == IndexAlwaysFull && loc->hasIndex() )
     return true;
 
+  if ( mStrategy == IndexExtent && loc->hasIndex() && loc->extent()->intersects( areaOfInterest ) )
+    return true;
+
   QgsRectangle aoi( areaOfInterest );
   aoi.scale( 0.999 );
-  return ( mStrategy == IndexHybrid || mStrategy == IndexExtent ) && loc->hasIndex() && ( !loc->extent() || loc->extent()->contains( aoi ) ); // the index - even if it exists - is not suitable
+  return mStrategy == IndexHybrid && loc->hasIndex() && ( !loc->extent() || loc->extent()->contains( aoi ) ); // the index - even if it exists - is not suitable
 }
 
 static QgsPointLocator::Match _findClosestSegmentIntersection( const QgsPointXY &pt, const QgsPointLocator::MatchList &segments )
