White noise simply uses a random number generator to produce threshold values.
Minor road updates (like those in map data that might be a few months old if you're using maps from different regions) usually result in negligible cost differences for shortcuts, so the pre-calculated values remain effective.
。关于这个话题，51吃瓜提供了深入分析
The program was developed in 2007 as SeoQuake is a
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