Function S2RegionCoverer.getFastCovering

Like GetCovering(), except that this method is much faster and the coverings are not as tight. All of the usual parameters are respected (max_cells, min_level, max_level, and level_mod), except that the implementation makes no attempt to take advantage of large values of max_cells(). (A small number of cells will always be returned.)

void getFastCovering (
  S2Region region,
  ref S2CellId[] covering
);

This function is useful as a starting point for algorithms that recursively subdivide cells.