IndicatorImplementation.java

animator.addIndicatorWatcher((indicator, position, fraction, totalTranslation) -> {
            
double radians = Math.PI * fraction;            
float sine = (float) -Math.sin(radians);            
float cosine = (float) Math.cos(radians);           
float maxScale = Math.max(Math.abs(cosine), 0.4F);
  
ImageView currentIndicator = animator.getIndicatorAt(position);
currentIndicator.setScaleX(maxScale);
currentIndicator.setScaleY(maxScale);
indicator.setTranslationY(indicatorSize * sine);
});