Experimental results show that it is an efficient method to create polygons automatically and avoid invalid polygons.

该算法有效地判断了多边形的搜索方向，避免了无效多边形的生成。

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Notice how you can create squares, polygons, and circles with names of your choice in the URL field.

注意如何在UR l字段中用您选择的名称创建正方形、多边形和圆形。

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The Canvas API is a low level API for drawing. It lets you create lines, curves, polygons, and circles and fill them in with colors, gradients, and so on.

Canvas API是一个低级画图api，它支持创建直线、曲线、多边形和圆圈，并用彩色、渐变色等填充它们。

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These applications create images by constructing 3-D polygons that describe an entire object (see chart, above).

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