It may take some experimentation to produce a pentagram with fairly even points, which will depend on the width of the shoe and the eyelet spacing.

要得到一个整洁的五角星可能需要一些试验，这取决于鞋子宽度和鞋孔大小。

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The rect function draws a rectangle, with the first two points defining the location and the next two defining width and height, respectively.

rect函数可绘制一个矩形，并且前两个点定义位置，而后面两个点则分别定义宽度和高度。

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Analysis shows that the distribution of meshing points is a function of the axial circular pitch, the axial space of two meshing points on a tooth and the effective width of the gear.

计算分析认为，双圆弧齿轮的啮合点分布情况是齿轮的轴向周节、同一轮齿上两啮合点在轴向的距离和齿轮的有效宽度的函数。

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