Here he extrudes and subdivides both polygon primitives and custom polygonal shapes as he bUIlds out the forms and shapes for the individual parts of this sci-fi tank model.

在这里，他和挤出两个细分多边形图元和自定义的多边形为他建立了形式和形状这部科幻坦克模型的各个部分。

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In polygonal modeling, you generally start with a polygon mesh object and then modify it, for example, by adding edges, welding points, subdividing polygons, and so on.

在多边形建模，通常从一个多边形网格对象，然后修改它，例如，加入边，焊接点，细分多边形，等等。

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

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。

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