Utilizing the extension of the polygon exterior angle sum theorem, directions of curvilinear polygons were judged and redundant polygons were deleted.
利用多边形外角定理的推广，判断偏置后曲线多边形的旋向，删除多余多边形。
Based on the Curvilinear Integral and its sorted edge table, a new polygon fill algorithm is developed in the article.
文章结合代数曲线积分思想与活性边表技术，提出了一种新的任意多边形代数积分算法。
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