private QuadTreeNode(TileRegion region)
{
this.region = region;
TileCoord center = region.Center;
TileCoord start = region.Start;
TileCoord end = region.End;
this.box = new ABox();
this.box.Add(new OpenTK.Vector3(start.Col, start.Row, start.Alt));
this.box.Add(new OpenTK.Vector3(end.Col, end.Row, end.Alt));
if (region.TileCount > 16)
{
leaf = false;
children[0] = new QuadTreeNode(new TileRegion(
start,
center));
children[1] = new QuadTreeNode(new TileRegion(
new TileCoord(center.Row, start.Col, 0),
new TileCoord(end.Row, center.Col, 0)));
children[2] = new QuadTreeNode(new TileRegion(
center,
end));
children[3] = new QuadTreeNode(new TileRegion(
new TileCoord(start.Row, center.Col, 0),
new TileCoord(center.Row, end.Col, 0)));
}
else
{
leaf = true;
}
}
public TileRegion Add(TileRegion otherRG)
{
int[] ns = { start[0], start[1], start[2] };
int[] ne = { end[0], end[1], end[2] };
Add(otherRG.Start, ns, ne);
Add(otherRG.End, ns, ne);
return new TileRegion(new TileCoord(ns), new TileCoord(ne));
}