Contrast: segment descriptor A-bit writeback
Crucially, this distribution of border points is agnostic of routing speed profiles. It’s based only on whether a road is passable or not. This means the same set of clusters and border points can be used for all car routing profiles (default, shortest, fuel-efficient) and all bicycle profiles (default, prefer flat terrain, etc.). Only the travel time/cost values of the shortcuts between these points change based on the profile. This is a massive factor in keeping storage down – map data only increased by about 0.5% per profile to store this HH-Routing structure!
。业内人士推荐91视频作为进阶阅读
Continue reading...，详情可参考旺商聊官方下载
stack.push(cur);，详情可参考safew官方版本下载