de.sciss.lucre.data.DeterministicSkipOctree
Leafs are ordered by the tree's in-order traversal, where the quadrants I+II and III+IV can be thought of as dummy nodes to binarize the octree.
Leafs are ordered by the tree's in-order traversal, where the quadrants I+II and III+IV can be thought of as dummy nodes to binarize the octree. That is to say, in a node, the child order corresponds to their quadrant indices (I < II < III < IV).