for (Vector2D vertex : hull.getVertices()) {
final PPath node = PPath.createEllipse(vertex.getX() - 1, vertex.getY() - 1, 2, 2);
node.addAttribute("tooltip", vertex);
node.setPaint(Color.red);
node.setStrokePaint(Color.red);
hullNode.addChild(node);
}
for (Segment line : hull.getLineSegments()) {
final PPath node = PPath.createLine(line.getStart().getX(), line.getStart().getY(),
line.getEnd().getX(), line.getEnd().getY());