private void renderShipment(Graph g, Shipment shipment, Label label, boolean renderShipments) {
Node n1 = g.addNode(makeId(shipment.getId(),shipment.getPickupLocationId()));
if(label.equals(Label.ID)) n1.addAttribute("ui.label", shipment.getId());
n1.addAttribute("x", shipment.getPickupCoord().getX());
n1.addAttribute("y", shipment.getPickupCoord().getY());
n1.setAttribute("ui.class", "pickup");
Node n2 = g.addNode(makeId(shipment.getId(),shipment.getDeliveryLocationId()));
if(label.equals(Label.ID)) n2.addAttribute("ui.label", shipment.getId());
n2.addAttribute("x", shipment.getDeliveryCoord().getX());