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javascript - 为什么canvas画图中Math.PI是180度？
迷茫
2017-04-11 09:23:17
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Math.PI不是3.14吗，怎么会变成180度？
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迷茫
业精于勤，荒于嬉;行成于思，毁于随。
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巴扎黑
2017-04-11 09:25:17
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。。。估计是数学没学好，弧度制PI代表180°
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。。。估计是数学没学好，弧度制PI代表180°