public void setActualImageFocusPoint(PointF focusPoint) {
    Preconditions.checkNotNull(focusPoint);
    getScaleTypeDrawableAtIndex(ACTUAL_IMAGE_INDEX).setFocusPoint(focusPoint);
  }
Sets the actual image focus point.
drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchy.java