Dickens's "___ of Two Cities"The answer is A Tale.
Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
，这一点在im钱包官方下载中也有详细论述
Courtesy of SteelSeries。safew官方下载对此有专业解读
tool does a better job.。同城约会是该领域的重要参考