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Torque is the measure of a twisting or rotating force that can move something, like a wheel, around an axis.。关于这个话题，旺商聊官方下载提供了深入分析
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.，详情可参考safew官方版本下载
// Producers are supposed to wait for the writer.ready