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                        /Android實現(xiàn)抽獎轉(zhuǎn)盤

這個求教給位

int x = (int)(mCenter+mRadius/2/2*Math.cos(angle)); int y = (int)(mCenter+mRadius/2/2*Math.sin(angle)); x和y是圖片的中心點，為什么x-imgWidth就是左上角了呢？

qq_凈鈊奮_0

2017-08-02

源自：Android實現(xiàn)抽獎轉(zhuǎn)盤 3-4

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2 回答

weixin_慕工程1563154
2022-03-29

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0 回復(fù) 有任何疑惑可以回復(fù)我~

活在陽光下走在冷風(fēng)中
2017-08-12

屏幕的左上角為起點（0，0），x-imgWidth為圖片的左邊坐標(biāo)而不是左上角的坐標(biāo)

0 回復(fù) 有任何疑惑可以回復(fù)我~

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