icon Offset
The default iconOffset for all annotations added to this annotation manager if not overwritten by individual annotation settings.
Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up. Each component is multiplied by the value of {@link PropertyFactory#iconSize} to obtain the final offset in density-independent pixels. When combined with {@link PropertyFactory#iconRotate} the offset will be as if the rotated direction was up.