IEnumerable <Element> GetNearestElements(Coordinate coordinate, int size)
{
TryInitDic();
for (int x = coordinate.X - size; x <= coordinate.X + size; x++)
{
for (int z = coordinate.Z - size; z <= coordinate.Z + size; z++)
{
Cell cell;
if (_cellsDic.TryGetValue(Coordinate.CalcHashCode(x, z), out cell))
{
foreach (var element in cell.Elements)
{
yield return(element);
}
}
}
}
}