border.setStroke(new BasicStroke(2f));
line.setStroke(new BasicStroke(2f));
border.setStrokePaint(NengoStyle.COLOR_ANCHOR);
line.setStrokePaint(NengoStyle.COLOR_ANCHOR);
ground.addChild(line);
ground.addChild(border);
updateBounds();
obj.addPropertyChangeListener(Property.REMOVED_FROM_WORLD, this);
obj.addPropertyChangeListener(Property.GLOBAL_BOUNDS, this);
}