Ryan MoultonFebruary 22, 2026February 26, 2026Technical
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.
，更多细节参见WPS官方版本下载
// not critical but safer when bytesToWrite != view.byteLength
集市上，人物形形色色。有一次，冬从集上回来，绘声绘色地给我讲了件遇到的事：在集市尽头的白沙河桥下，停着一辆灰色面包车，车旁围着一群人，每个人都拎着一个大黑塑料袋，里面鼓鼓的装着什么，一些人手里举着钞票。冬很好奇，凑过去看热闹，结果被人群外围放哨的两个男人劝离。冬蹲在地上，假装系鞋带，听到他们在争相竞价。冬转了一圈回来，看见拎着黑塑料袋的人们愣在原地，盯着扬长而去的面包车，久久缓不过神来。他们彼此打听对方的出价，有人说四百，有人说三百，有人咬着牙根不说。冬问他们买的什么，他们支支吾吾地说，厨具。