有一个点列表,我如何找到顺时针顺序？
例如:
point[0] = (5,0) point[1] = (6,4) point[2] = (4,5) point[3] = (1,5) point[4] = (1,0)
会说它是逆时针(或逆时针,对某些人来说).
math geometry polygon computational-geometry
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