public IntegerOctTreeNode(Point3 Min, Point3 Max)
{
Bounds = new IntegerBoundingBox(Min, Max);
Bounds.Max.X = Bounds.Min.X + NextPowerOfTwo(Bounds.Width);
Bounds.Max.Y = Bounds.Min.Y + NextPowerOfTwo(Bounds.Height);
Bounds.Max.Z = Bounds.Min.Z + NextPowerOfTwo(Bounds.Depth);
Mid = new Point3(Min.X + Bounds.Width / 2, Min.Y + Bounds.Height / 2, Min.Z + Bounds.Depth / 2);
Debug.Assert(NextPowerOfTwo(Mid.X - Min.X) == (Mid.X - Min.X));
}
public bool Intersects(IntegerBoundingBox Other)
{
if (Min.X > Other.Max.X || Max.X < Other.Min.X)
{
return(false);
}
if (Min.Y > Other.Max.Y || Max.Y < Other.Min.Y)
{
return(false);
}
if (Min.Z > Other.Max.Z || Max.Z < Other.Min.Z)
{
return(false);
}
return(true);
}
public void FindItemsInBox(IntegerBoundingBox SearchBounds, HashSet <T> results)
{
if (SearchBounds.Intersects(Bounds))
{
if (Children == null)
{
for (var i = 0; i < Items.Count; ++i)
{
if (Items[i].Item2.Intersects(SearchBounds))
{
results.Add(Items[i].Item1);
}
}
}
else
{
for (var i = 0; i < 8; ++i)
{
Children[i].FindItemsInBox(SearchBounds, results);
}
}
}
}
public void RemoveItem(T Item, IntegerBoundingBox Point)
{
RemoveFromTree(Tuple.Create(Item, Point));
}
public void AddItem(T Item, IntegerBoundingBox Point)
{
AddToTree(Tuple.Create(Item, Point), 8);
}