for(Iterator iterator=ps.getPickedVertices().iterator(); iterator.hasNext(); ) {
Vertex v = (Vertex)iterator.next();
Point2D vp = layout.getLocation(v);
if (!layout.isLocked(v)) {
layout.forceMove(v, vp.getX()+dx, vp.getY()+dy);
}
}
down = p;
} else {