@Override protected void doRestoreState(RestorableSupport rs, RestorableSupport.StateObject context) { super.doRestoreState(rs, context); Double la = rs.getStateValueAsDouble(context, "leftAzimuthDegrees"); if (la == null) la = this.leftAzimuth.degrees; Double ra = rs.getStateValueAsDouble(context, "rightAzimuthDegrees"); if (ra == null) ra = this.rightAzimuth.degrees; this.setAzimuths(Angle.fromDegrees(la), Angle.fromDegrees(ra)); }