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模板 二分图最优匹配,前提是有完美匹配(即存在一一配对)左右集合分别有顶标,当时,为有效边,即选中初始对于左集合每个点,选择其连边中最优的,然后对于每…
sprites can face the camera,or they can face any arbitrary vector,in this case the vector between the center of the system and the particle itself(粒子可以面对摄影机,也可以面对任意向量,在这个实例中的向…