/**
* Specialized version of GetIntersection() that gets the intersection of a
* cell union with the given cell id. This can be useful for "splitting" a
* cell union into chunks.
*/
public void GetIntersection(S2CellUnion x, S2CellId id)
{
// assert (x != this);
_cellIds.Clear();
if (x.Contains(id))
{
_cellIds.Add(id);
}
else
{
var pos = x._cellIds.BinarySearch(id.RangeMin);
if (pos < 0)
{
pos = -pos - 1;
}
var idmax = id.RangeMax;
var size = x._cellIds.Count;
while (pos < size && x._cellIds[pos] <= idmax)
{
_cellIds.Add(x._cellIds[pos++]);
}
}
}
