pickCanvas.setMode(PickTool.GEOMETRY_INTERSECT_INFO);
pickCanvas.setTolerance(Math.max(dx,dy));
pickCanvas.setShapeLocation(posX, posY);
// TODO : don't do pick closest, loop on all results
PickResult result = pickCanvas.pickClosest();
if (result!=null) {
Node node = result.getObject();
Object o = node.getUserData();
if (o instanceof ActiveNode) {
((ActiveNode)o).highlight(true,result);