if (arr[i-1] arr[i]) return 0;
"Shows like We Will Rock You don't come around very often for a small amateur group like ourselves and to have Neil added into the mix is just incredible.
。夫子是该领域的重要参考
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.
scientificamerican.com