public GenericDraweeHierarchyBuilder setActualImageFocusPoint(@Nullable PointF focusPoint) {
    mActualImageFocusPoint = focusPoint;
    return this;
  }
Sets the focus point for the actual image.

<p>If a focus point aware scale type is used (e.g. FOCUS_CROP), the focus point of the image
will be attempted to be centered within a view. Each coordinate is a real number in [0, 1]
range, in the coordinate system where top-left corner of the image corresponds to (0, 0) and
the bottom-right corner corresponds to (1, 1).

@param focusPoint focus point of the image
@return modified instance of this builder
drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchyBuilder.java