Merge pull request #3 from Moka42/sweeping_crashfix

Fix a crash when using EfficientSugiyamaLayoutAlgorithm in sweeping operation.
KeRNeLith · Aug 5, 2020 · 440b90b · 440b90b
2 parents 13c2e2e + 20fbe4f
commit 440b90b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/...gorithms/Layout/Simple/Hierarchical/EfficientSugiyamaAlgorithm.DoCrossingMinimizations.cs b/...gorithms/Layout/Simple/Hierarchical/EfficientSugiyamaAlgorithm.DoCrossingMinimizations.cs
@@ -29,6 +29,9 @@ public partial class EfficientSugiyamaLayoutAlgorithm<TVertex, TEdge, TGraph>
         /// </summary>
         private void DoCrossingMinimizations()
         {
+            if (_layers.Count < 2)
+                return;
+
             int prevCrossings = int.MaxValue;
             int crossings = int.MaxValue;
             int phase = 1;