QuarZ例子

1.用Ellipses和Arcs绘制曲线 代码如下： <wbr><wbr><wbr>// Drawing with a white stroke color</wbr></wbr></wbr> CGContextSetRGBStrokeCol<wbr>or<span style="word-wrap:normal; word-break:normal; line-height:21px">(con

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