anchor.diff:      int len = _value.length;
   
       double f = (time - _time) / (toFrame.time - _time);
  +    if (_interpolator != null) {
  +      f = _interpolator.getEasedMix(f);
  +    }
       double fi = 1.0 - f;
       if (mix == 1.0) {
         for (int i = 0; i < len; i++) {
  
positive.code:     return frame;
    }
  
    void setNext(KeyFrame frame) {
      // Do nothing.
    }
  
    void applyInterpolation(
        ActorComponent component, double time, KeyFrame toFrame, double mix) {
      ActorPath path = component as ActorPath;
  
negative.code:     int l = _vertices.length;
  
      double f = (time - _time) / (toFrame.time - _time);
      if(_interpolator != null) {
        f = _interpolator.getEasedMix(f);
      }
      double fi = 1.0 - f;
      if (mix == 1.0) {
        for (int i = 0; i < l; i++) {
  