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Re:3348那为兄弟提示下

Posted by huangkun at 2007-08-17 13:01:39
In Reply To:3348那为兄弟提示下 Posted by:xtu722 at 2007-08-17 12:31:21
用叉积做,按顺时针或逆时针


> 3348我是将多边形划分为N个三角形来算,用海伦公式算的时候,跟点出现的顺序有很大的关系,
> 
> 这个点是什么顺序?
> 
> 作出来的兄弟帮帮忙!

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