Resolve a node's cached world-space AABB, computing it from its geometry's local-space bounds on cache miss. The cache survives camera motion — only register/unregister/geometry-commit invalidates it via invalidateBoxCache.
Resolve a node's cached world-space AABB, computing it from its geometry's local-space bounds on cache miss. The cache survives camera motion — only register/unregister/geometry-commit invalidates it via invalidateBoxCache.