public void writeObject(DataOutput out) throws IOException {
super.writeObject(out);
Vector3f dir = new Vector3f();
((SpotLight) node).getDirection(dir);
control.writeVector3f(out, dir);
out.writeFloat(((SpotLight) node).getSpreadAngle());
out.writeFloat(((SpotLight) node).getConcentration());
}
public void readObject(DataInput in) throws IOException {
super.readObject(in);
((SpotLight) node).setDirection(control.readVector3f(in));
((SpotLight) node).setSpreadAngle(in.readFloat());
((SpotLight) node).setConcentration(in.readFloat());
}