创建使用当前多边形填充模式的两个或多个多边形，多边形可以相互分开或叠加。

Creates two or more polygons that are filled using the current polygon-filling mode. The polygons may be disjoint or they may overlap.

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缺省情况下，多边形填充模式是ALTERNATE，但是你可以设置它为WINDING。这两种模式之间的区别在图5 - 19中显示。

By default, the polygon-filling mode is ALTERNATE, but you can set it to WINDING. The difference between the two modes is shown in Figure 5-19.

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