是否有iOS等效的appendBezierPathWithArcWithCenter

本文介绍了是否有iOS等效的appendBezierPathWithArcWithCenter的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正试图在iOS中画一个四分之一圈。在Mac OS中，似乎你可以使用appendBezierPathWithArcWithCenter但这似乎在iOS中不起作用。

有没有人知道如何在iOS中绘制一个四分之一圈？ / p>

谢谢

解决方案

有两个iOS等价物，一个用于 UIBezierPath 和一个 CGPath ：

UIBezierPath 等价物

UIBezierPath * path = [UIBezierPath bezierPath]; [路径addArcWithCenter：centerPoint 半径：radius startAngle：startAngle endAngle：endAngle 顺时针：是];

CGPath 等价物

CGMutablePathRef path = CGPathCreateMutable（）; CGPathAddArc（path，NULL， centerPoint.x，centerPoint.y， radius， startAngle， endAngle， NO）; //顺时针

I'm trying to draw a quarter circle in iOS. In Mac OS, it seems you can use appendBezierPathWithArcWithCenter but this doesn't seem to work in iOS.

Does anyone know how to simply draw a quarter circle in iOS?

Thanks

解决方案

There are two iOS equivalents, one for UIBezierPath and one for CGPath:

UIBezierPath equivalent

UIBezierPath *path = [UIBezierPath bezierPath]; [path addArcWithCenter:centerPoint radius:radius startAngle:startAngle endAngle:endAngle clockwise:YES];

CGPath equivalent

CGMutablePathRef path = CGPathCreateMutable(); CGPathAddArc(path, NULL, centerPoint.x, centerPoint.y, radius, startAngle, endAngle, NO); // clockwise