public PointRegionQuadTreeNodeBranch(
BoundingBox bb,
int level,
PointRegionQuadTreeNode nw,
PointRegionQuadTreeNode ne,
PointRegionQuadTreeNode sw,
PointRegionQuadTreeNode se)
: base(bb, level)
{
Nw = nw;
Ne = ne;
Sw = sw;
Se = se;
}
public static PointRegionQuadTreeNode Navigate(
PointRegionQuadTreeNode current,
string directions)
{
if (string.IsNullOrEmpty(directions))
{
return(current);
}
var split = directions.SplitCsv();
for (var i = 0; i < split.Length; i++)
{
var branch = (PointRegionQuadTreeNodeBranch)current;
switch (split[i])
{
case "nw":
current = branch.Nw;
break;
case "ne":
current = branch.Ne;
break;
case "sw":
current = branch.Sw;
break;
case "se":
current = branch.Se;
break;
default:
throw new ArgumentException("Invalid direction " + split[i]);
}
}
return(current);
}
public static PointRegionQuadTreeNodeLeaf <object> NavigateLeaf(
PointRegionQuadTreeNode node,
string directions)
{
return((PointRegionQuadTreeNodeLeaf <object>)Navigate(node, directions));
}