/// <summary> Remove a OctreeLeaf out of the tree at a location.
///
/// </summary>
/// <param name="leaf">object-location composite
/// <returns> the object removed, null if the object not found.
/// </returns>
public object RemoveNode(OctreeLeaf leaf)
{
if (branch == null)
{
// This must be the node that has it...
for (int i = 0; i < items.Count; i++)
{
OctreeLeaf qtl = (OctreeLeaf)items[i];
if (leaf.LeafObject == qtl.LeafObject)
{
items.RemoveAt(i);
return(qtl.LeafObject);
}
}
}
else
{
OctreeNode node = getChild(leaf.X, leaf.Y, leaf.Z);
if (node != null)
{
return(node.RemoveNode(leaf));
}
}
return(null);
}
/// <summary> Get all the objects within a bounding box.</summary>
/// <param name="rect">boundary of area to fill.</param>
/// <param name="vector">current vector of objects.</param>
/// <returns> updated Vector of objects.</returns>
public ArrayList GetNode(OctreeBox rect, ArrayList nodes)
{
if (branch == null)
{
IEnumerator things = this.items.GetEnumerator();
while (things.MoveNext())
{
OctreeLeaf qtl = (OctreeLeaf)things.Current;
if (rect.pointWithinBounds(qtl.X, qtl.Y, qtl.Z))
{
nodes.Add(qtl.LeafObject);
}
}
}
else
{
for (int i = 0; i < branch.Length; i++)
{
if (branch[i].bounds.within(rect))
{
branch[i].GetNode(rect, nodes);
}
}
}
return(nodes);
}
/// <summary> Add a OctreeLeaf into the tree at a location.</summary>
/// <param name="leaf">object-location composite</param>
/// <returns> true if the pution worked.</returns>
public bool AddNode(OctreeLeaf leaf)
{
if (branch == null)
{
this.items.Add(leaf);
if (this.items.Count == 1)
{
this.allTheSamePoint = true;
this.firstX = leaf.X;
this.firstY = leaf.Y;
this.firstZ = leaf.Z;
}
else
{
if (this.firstX != leaf.X || this.firstY != leaf.Y || this.firstZ != leaf.Z)
{
this.allTheSamePoint = false;
}
}
if (this.items.Count > maxItems && !this.allTheSamePoint)
{
split();
}
return(true);
}
else
{
OctreeNode node = getChild(leaf.X, leaf.Y, leaf.Z);
if (node != null)
{
return(node.AddNode(leaf));
}
}
return(false);
}
/// <summary> Remove a OctreeLeaf out of the tree at a location.
///
/// </summary>
/// <param name="leaf">object-location composite
/// <returns> the object removed, null if the object not found.
/// </returns>
public object RemoveNode(OctreeLeaf leaf)
{
if (branch == null)
{
// This must be the node that has it...
for (int i = 0; i < items.Count; i++)
{
OctreeLeaf qtl = (OctreeLeaf)items[i];
if (leaf.LeafObject == qtl.LeafObject)
{
items.RemoveAt(i);
return qtl.LeafObject;
}
}
}
else
{
OctreeNode node = getChild(leaf.X, leaf.Y, leaf.Z);
if (node != null)
{
return node.RemoveNode(leaf);
}
}
return null;
}
/// <summary> Add a OctreeLeaf into the tree at a location.</summary>
/// <param name="leaf">object-location composite</param>
/// <returns> true if the pution worked.</returns>
public bool AddNode(OctreeLeaf leaf)
{
if (branch == null)
{
this.items.Add(leaf);
if (this.items.Count == 1)
{
this.allTheSamePoint = true;
this.firstX = leaf.X;
this.firstY = leaf.Y;
this.firstZ = leaf.Z;
}
else
{
if (this.firstX != leaf.X || this.firstY != leaf.Y || this.firstZ != leaf.Z)
{
this.allTheSamePoint = false;
}
}
if (this.items.Count > maxItems && !this.allTheSamePoint)
split();
return true;
}
else
{
OctreeNode node = getChild(leaf.X, leaf.Y, leaf.Z);
if (node != null)
{
return node.AddNode(leaf);
}
}
return false;
}
