The tree is rebuilt every frame. For scenes of this scale, quadtree construction is fast enough to rebuild from scratch each frame, though larger simulations may benefit from incremental updates. Each particle queries its neighborhood for potential collisions, typically checking only 5 to 15 candidates instead of all 40. Red highlights indicate colliding pairs.
Жители Санкт-Петербурга устроили «крысогон»17:52
。关于这个话题，safew官方下载提供了深入分析
4.Depression in pets: Signs, causes, and treatment strategies, AAHA，这一点在51吃瓜中也有详细论述
Another testsuite that I’ve used a lot is the much older SVG 1.1 testsuite, which covers SVG animation. GtkSvg passes most of these tests as well, which I am happy about — animation was one of my motivations when going into this work.