public int GetNodeFaceDataLength(OctreeChild n)
{
int l = 0;
if (n is OctreeNode)
{
for (int i = 0; i < 8; i++)
{
l += GetNodeFaceDataLength((n as OctreeNode).Children[i]);
}
}
else
{
if (n is OctreeLeaf)
{
l += GetLeafFaceDataLength(n as OctreeLeaf);
}
else
{
l += 0;
}
}
return(l);
}
public OctreeNode()
{
Children = new OctreeChild[8];
for (int i = 0; i < Children.Length; i++)
{
Children[i] = new OctreeChild();
}
}
public static OctreeChild Create(BoundingBox bounds, List <OctreeFace> faces, int depth = -1)
{
depth++;
OctreeChild node = new OctreeChild();
Vector3 centre = (bounds.Min + bounds.Max) * 0.5f;
BoundingBox childBounds = new BoundingBox();
SplitFlags splitFlags = 0;
if (depth > Octree.MaxDepth || (depth > 0 && faces.Count < Octree.MaxFacesPerLeaf))
{
splitFlags = 0;
if (faces.Count > Octree.MaxFacesPerLeaf / 8)
{
if (bounds.Max.X - bounds.Min.X > 100.0f)
{
splitFlags |= SplitFlags.SplitInX;
}
if (bounds.Max.Z - bounds.Min.Z > 100.0f)
{
splitFlags |= SplitFlags.SplitInZ;
}
}
if (splitFlags == 0)
{
node = OctreeLeaf.Create(depth, faces);
depth--;
return(node);
}
}
else
{
DetermineSplittage(depth, faces, centre, ref splitFlags);
}
if (depth > 0 && splitFlags == 0)
{
node = OctreeLeaf.Create(depth, faces);
depth--;
return(node);
}
//numNodes++;
node = new OctreeNode
{
ChildType = 0,
Flags = splitFlags
};
for (int i = 0; i < (node as OctreeNode).Children.Length; i++)
{
if (node.Flags.HasFlag(SplitFlags.SplitInX))
{
if ((i & 1) == 1)
{
childBounds.Min.X = centre.X;
childBounds.Max.X = bounds.Max.X;
}
else
{
childBounds.Min.X = bounds.Min.X;
childBounds.Max.X = centre.X;
}
}
else
{
if ((i & 1) == 1)
{
continue;
}
else
{
childBounds.Min.X = bounds.Min.X;
childBounds.Max.X = bounds.Max.X;
}
}
if (node.Flags.HasFlag(SplitFlags.SplitInY))
{
if ((i & 2) == 2)
{
childBounds.Min.Y = centre.Y;
childBounds.Max.Y = bounds.Max.Y;
}
else
{
childBounds.Min.Y = bounds.Min.Y;
childBounds.Max.Y = centre.Y;
}
}
else
{
if ((i & 2) == 2)
{
continue;
}
else
{
childBounds.Min.Y = bounds.Min.Y;
childBounds.Max.Y = bounds.Max.Y;
}
}
if (node.Flags.HasFlag(SplitFlags.SplitInZ))
{
if ((i & 4) == 4)
{
childBounds.Min.Z = centre.Z;
childBounds.Max.Z = bounds.Max.Z;
}
else
{
childBounds.Min.Z = bounds.Min.Z;
childBounds.Max.Z = centre.Z;
}
}
else
{
if ((i & 4) == 4)
{
continue;
}
else
{
childBounds.Min.Z = bounds.Min.Z;
childBounds.Max.Z = bounds.Max.Z;
}
}
//Logger.LogToFile(Logger.LogLevel.All, $"{depth}\t{i}\t{childBounds.Min}\t{childBounds.Max}");
List <OctreeFace> childFaces = Octree.FindFacesFromList(faces, childBounds);
(node as OctreeNode).Children[i] = Create(childBounds, childFaces, depth);
}
depth--;
return(node);
}
