python 計算一個點是否在多邊形內（轉）

計算方法是射線法，計算交點個數:python def isInsidePolygon(pt, poly): c = False i = -1 l = len(poly) j = l - 1 while i < l-1: i += 1 print i,poly[i], j,poly[j] if ((poly[i]

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