private OctagonalVector AllocateLowerBoundRoot(OctagonalVector v)
{
OctagonalVector dV = v - _rootVector;
OctagonalVector oldRoot = new OctagonalVector(
(dV.X < 0) ? ((-dV.X - 1) >> _depth) + 1 : 0,
(dV.Y < 0) ? ((-dV.Y - 1) >> _depth) + 1 : 0,
(dV.Z < 0) ? ((-dV.Z - 1) >> _depth) + 1 : 0);
List <int> oldRootPath = oldRoot.CalculatePath();
int oldRootPathLength = oldRootPath.Count();
if (oldRootPathLength > 0)
{
for (int i = 0; i < oldRootPathLength; i++)
{
_root = new Octant(oldRootPath[i], _root);
}
_rootVector -= oldRoot << _depth;
_depth += oldRootPathLength;
}
return(dV);
}
public Octant GetOrAllocate(int child)
{
if (_childs[child] == null)
{
_childs[child] = new Octant(0, null);
}
return(_childs[child]);
}
private void Itterate(Octant octant)
{
if (octant != null)
{
if (octant.HasChilds)
{
_path.Insert(0, 0);
for (int i = 0; i <= 7; i++)
{
_path[0] = i;
Itterate(octant[i]);
}
_path.RemoveAt(0);
}
_action(octant, _path);
}
}
public OctagonalVector AllocateNode(OctagonalVector v, OctantNode node)
{
lock (this)
{
if (_root == null)
{
_rootVector = v;
_depth = 0;
_root = node;
return(new OctagonalVector(0, 0, 0));
}
OctagonalVector dV = AllocateLowerBoundRoot(v);
AllocateVector(dV.CalculatePath(), node);
return(dV);
}
}
void AllocateVector(List <int> vPath, OctantNode node)
{
int vectorPosition = vPath.Count();
//AllocateUpperBoundRoot
while (_depth < vPath.Count)
{
_root = new Octant(0, _root); _depth++;
}
//Find Octant
Octant current = _root;
//Skip missing (zero Octant) path coordinates
int vectorDimension = _depth - 1;
while (vectorDimension > 0 && vectorPosition <= vectorDimension)
{
current = current.GetOrAllocate(0); vectorDimension--;
}
//Find the path
while (vectorDimension > 0)
{
current = current.GetOrAllocate(vPath[vectorDimension--]);
}
if (vectorPosition > 0)
{
current[vPath[0]] = node;
}
else
{
current[0] = node;
}
}
public Octant(int childPos, Octant child)
{
_childs = new Octant[8];
_childs[childPos] = child;
}
