public void rollIn(Operator operator){
  map.put(operator,new InterpolatedValue(false,getValue(operator)));
  if (!timer.isRunning()) {
    timer.start();
  }
}

public void rollIn ( Operator operator ) { map . put ( operator , new InterpolatedValue ( false , getValue ( operator ) ) ) ; if ( ! timer . isRunning ( ) ) { timer . start ( ) ; } }
starts interpolating the extension value for the given operator in the opposite direction , starting with the current value .
