private bool TryGetY(PointLane <PointLane <Vector3> > lane, Vector3 key, out T t)
{
//search the sub lanes for sub sub lanes that match the y value
PointLane <Vector3> left, center, right;
(left, center, right) = lane.GetOrInitLanes(key.y, () => new PointLane <Vector3>(percision));
//search down the sub lanes
if (center != null && TryGetZ(center, key, out t))
{
return(true);
}
if (left != null && TryGetZ(left, key, out t))
{
return(true);
}
if (right != null && TryGetZ(right, key, out t))
{
return(true);
}
t = default(T);
return(false);
}
