Fills the interior of an ellipse defined by a bounding rectangle specified by a pair of coordinates, a width, and a height.
填充边框所定义的椭圆的内部，该边框由一对坐标、一个宽度和一个高度指定。
An ellipse is defined by its bounding rectangle; an arc is a portion of an ellipse defined by a starting Angle and a sweep Angle.
椭圆是由其边框定义的；弧是椭圆的一部分，由一个起始角和一个扫描角定义。
There are several constructors available, all of them taking a bounding rectangle and an array of values.
有几个可用的构造，所有的人采取的边界矩形和值的数组。
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