public interface ILcdKML22RegionFilter
A common interface for region filters
A region filter is an object that is capable of calculating the activity of a
as stated by the KML 2.2 specifications
A region filter is view-dependant, so there will typically be implementations for each type of view.
double getRegionActivity(TLcdKML22Region aRegion)
Calculates the activity of a region.
aRegion - The region of which to calculate the activity of.