mm.zhang
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mm.zhang
这个地方是计算多边形面积,他这里写的有错误,后面应该是相加,而不是相减,这个是可以推导出来的: `edge += (polygon[next_index, 0] - polygon[i, 0]) * (polygon[next_index, 1] - polygon[i, 1])` 应该修改为: `edge += (polygon[next_index, 0] - polygon[i, 0]) * (polygon[next_index, 1] + polygon[i, 1])`