The axis-aligned World-space 3D boundary of this kd-tree node.
A unique, sequential numeric ID for this KDNode within its KdTree3.
This is used by queries that cache intersection results for KDNodes.
Optional
itemsThe KDItems stored in this KDNode.
Optional
leftThe left KDNode.
Optional
rightThe right KDNode.
A node in a KdTree3.
See @xeokit/sdk/kdtree3 for usage.