This value can be used as the S2Builder snap_radius() to ensure that edges
that have been displaced by up to INTERSECTION_ERROR are merged back
together again. For example this can happen when geometry is intersected
with a set of tiles and then unioned. It is equal to twice the
intersection error because input edges might have been displaced in
opposite directions.
This value can be used as the S2Builder snap_radius() to ensure that edges that have been displaced by up to INTERSECTION_ERROR are merged back together again. For example this can happen when geometry is intersected with a set of tiles and then unioned. It is equal to twice the intersection error because input edges might have been displaced in opposite directions.