arc(0, 0, 50, 0, 2*math.pi) cr.stroke_preserve() stroke_preserve()方法是根据当前的线宽度(line width)、线连接(line join)、线终结(line cap)和混合设定(dash settings)来绘出(stroke)当前的路径。【译者注:此处翻译可能有误,请自行理解英文意义】。
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There are three line join styles: miter, bevel, and round.
有三种线条联接样式:斜接、斜切和圆。
The following illustration shows the results of the beveled line join example.
下面的示例显示斜切线条联接的结果。
A line join is the common area that is formed by two lines whose ends meet or overlap.
线条联接点是由两条端点相交或重叠的线条构成的共同区域。
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