vv.getRenderContext().setEdgeArrowStrokeTransformer(i -> i.getStroke()); vv.getRenderContext().setEdgeArrowTransformer(new ConstantTransformer(ArrowFactory.getNotchedArrow(7, 10, 5))); vv.getRenderContext().setEdgeLabelClosenessTransformer(new ConstantDirectionalEdgeValueTransformer(.6, .6)); vv.getRenderContext().setEdgeStrokeTransformer(i -> i.getEdgeStroke());