protected void positionVertices() {
layerPartition.setAlternatePendulumTraversals(false);
layerPartition.setHorizontalSpacing(horizontalSpacing);
layerPartition.setVerticalSpacing(verticalSpacing);
layerPartition.setVerticalAlignment(verticalAligment);
layerPartition.setRubberForceThreshold(1.0);
layerPartition.createSubgraphPartition();
// layerPartition.printLayers();
layerPartition.positionDummies();
layerPartition.setDummyFixed(true);
layerPartition.balancePendulum(100);
layerPartition.balanceRubberBends(100);
layerPartition.positionLayers();
layerPartition.updateGeometry(vertexShape, areaBounds);
}
