ForceDirectedSpringGravityLayoutStrategy as the default.

Author: brunomnsilva

src/main/java/com/brunomnsilva/smartgraph/graphview/SmartGraphPanel.java

@@ -123,7 +123,7 @@ public SmartGraphPanel(Graph<V, E> theGraph) {
             new SmartGraphProperties(),
             new SmartCircularSortedPlacementStrategy(),
             null,
-            new ForceDirectedSpringSystemLayoutStrategy<>()
+            new ForceDirectedSpringGravityLayoutStrategy<>()
         );
     }
 
@@ -158,7 +158,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties) {
             properties,
             new SmartCircularSortedPlacementStrategy(),
             null,
-            new ForceDirectedSpringSystemLayoutStrategy<>()
+            new ForceDirectedSpringGravityLayoutStrategy<>()
         );
     }
 
@@ -175,7 +175,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartPlacementStrategy placementStr
             new SmartGraphProperties(),
             placementStrategy,
             null,
-            new ForceDirectedSpringSystemLayoutStrategy<>()
+            new ForceDirectedSpringGravityLayoutStrategy<>()
         );
     }
 
@@ -195,7 +195,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties,
             properties,
             placementStrategy,
             null,
-            new ForceDirectedSpringSystemLayoutStrategy<>()
+            new ForceDirectedSpringGravityLayoutStrategy<>()
         );
     }
 
@@ -216,7 +216,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties,
             properties,
             placementStrategy,
             cssFile,
-            new ForceDirectedSpringSystemLayoutStrategy<>()
+            new ForceDirectedSpringGravityLayoutStrategy<>()
         );
     }