最后给出一个稳定可靠的任意多边形裁剪算法。

Finally, the effective general polygon clipping algorithm is given.

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已有的多边形裁剪算法都是针对矩形窗口或凸多边形窗口进行的。

Existing polygon clipping algorithms are all offered for a rectangular window or a convex polygonal window.

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多边形裁剪与线剪裁相比具有更广泛的实用意义，因此它是目前裁剪研究的主要课题。

Polygon clipping is more often used than line clipping in practice, so it is the main subject in clipping research now.

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