[tracer] Skip duplicate points in the path (to avoid geometry errors)

qgis · Jan 10, 2016 · bf8571d · bf8571d
1 parent 70c5fe5
commit bf8571d
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/src/core/qgstracer.cpp b/src/core/qgstracer.cpp
@@ -444,7 +444,6 @@ void extract_linework( QgsGeometry* g, QgsMultiPolyline& mpl )
   }
 }
 
-
 // -------------
 
 

diff --git a/src/gui/qgsmaptoolcapture.cpp b/src/gui/qgsmaptoolcapture.cpp
@@ -208,6 +208,8 @@ bool QgsMapToolCapture::tracingAddVertex( const QgsPoint& point )
 
   for ( int i = 1; i < points.count(); ++i )
   {
+    if ( points[i] == points[i-1] )
+      continue; // avoid duplicate vertices if there are any
     mRubberBand->addPoint( points[i], i == points.count() - 1 );
     mCaptureCurve.addVertex( layerPoints[i-1] );
   }