快速 3 CGPathAddCurveToPoint [英] swift 3 CGPathAddCurveToPoint

问题描述

我正在尝试将代码更新为 swift 3，但我找不到有关 CGPathAddCurveToPoint 的任何信息，我该如何修复错误?

I'm trying to update code to swift 3 but I can't find anything about CGPathAddCurveToPoint, how can I fix the error?

路径是一个 CGMutablePath

path is a CGMutablePath

CGPathAddCurveToPoint(path, nil, 10, 10, 20, 20, 30, 30)

错误:nil 与预期的参数类型 'UnsafePoiter' 不兼容

error: nil is not compatible with expected argument type 'UnsafePoiter'

我发现 CGPathAddLineToPoint(path, nil, 10, 10)变成了 path.addLine(to: p0)

I found that CGPathAddLineToPoint(path, nil, 10, 10) became path.addLine(to: p0)

推荐答案

请阅读 CGMutablePath 文档:

Please read the CGMutablePath docs:

https://developer.apple.com/reference/coregraphics/cgmutablepath

你会发现:

func addCurve(to end: CGPoint, control1: CGPoint, control2: CGPoint, 
    transform: CGAffineTransform = default)

注意，这现在是一个方法，而不是一个松散的全局函数.

Note that this is now a method, not a loose global function.

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