public static Tile getUpperLeft ( BoundingBox boundingBox , byte zoomLevel , int tileSize ) { int tileLeft = MercatorProjection . longitudeToTileX ( boundingBox . minLongitude , zoomLevel ) ; int tileTop = MercatorProjection . latitudeToTileY ( boundingBox . maxLatitude , zoomLevel ) ; return new Tile ( tileLeft , tileTop , zoomLevel , tileSize ) ; }
Upper left tile for an area .