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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                在 `canvas` 中繪制圓形,將使用以下方法 ``` arc(x, y, r, start, stop) ``` 實際上在繪制圓形時使用了 `ink` 的方法,比如 `stroke()` 或者 `fill()` ``` context.arc(x, y, r, sAangle, eAangel, counterclockwise) ``` arc參數如下: | 參數 | 描述 | | --- | --- | | x | 圓的中心的 x 坐標 | | y | 圓的中心的 y 坐標 | | r | 圓的半徑 | | sAngle | 起始角,以弧度計(弧的圓形的三點鐘位置是0度) | | eAngle | 結束角,經弧度計 | | counterclockwise | 可選。規定應該逆時針還是順時針繪圖。False=順時針,true=逆時針 |
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