用MFC编写的多边形扫描线填充程序。 支持凹多边形，非种子点算法，而是用顶点算出边界实现填充。-MFC prepared with polygon scan-line filling procedures. Concave polygon support, non-seed-point algorithm, but with the realization of vertex fill out the border.

用openGL扫描转换多边形和椭圆，其中多边形用的是边界标识法-Polygons and ellipses, with openGL scan conversion polygon with boundary identification method