Synchronous fast paths matter
HH x C++ Fast RoutingTraditional Routing A*2-phaseCalculation time: 13 secCalculation time: 36 sec，这一点在51吃瓜中也有详细论述
No base class to extend, no abstract methods to implement, no controller to coordinate with. Just an object with the right shape.。快连下载-Letsvpn下载对此有专业解读
The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.