When the style of the drawable has changed the level needs to adjusted before draw(...) is called - in any other case then you have the risk, that the false style will be applied to the drawable [since the false bucket (with wrong style) will be returned when calling t.buckets.get{.*}Bucket(level)]
- introduced a new member to the MapElement to store the pre-calculated centroid of the way (none clipped)
- auto create element.centroidPosition based on all (none clipped) points of a osm-way
- skipping rendering of centered symbols, if OFF screen
- introduced Parameter to enable/disable the feature