public void visit(Relation r) {
if (r.isNewOrUndeleted() || r.isModified() || r.isDeleted()) {
hull.add(r);
for (OsmPrimitive p : r.getMemberPrimitives()) {
// add new relation members. Don't include modified
// relation members. r shouldn't refer to deleted primitives,
// so wont check here for deleted primitives here
//
if (p.isNewOrUndeleted()) {
p.visit(this);
}
}
}
}
