Ios 如何将自定义UIBezierPath装入NSTextContainer

我正在使用此链接中的方法：

---

当我使用原始方法时，

[UIBezierPath-bezierpath-withovalinrect:r]它工作得很好。但当我画出自己的UIBezierPath并替换它时，它就不起作用了。while循环将永远持续下去。以下是（A）自定义UIBezierPath图形和（B）默认UIBezierPath椭圆的屏幕截图：

func drawPath（）->UIBezierPath
{
var path=UIBezierPath（）
path.moveToPoint（CGPointMake（126488））
addCurveToPoint（CGPointMake（196471）、controlPoint1:CGPointMake（156488）、controlPoint2:CGPointMake（175471））
addCurveToPoint（CGPointMake（266488）、controlPoint1:CGPointMake（216471）、controlPoint2:CGPointMake（235488））
addCurveToPoint（CGPointMake（362382）、controlPoint1:CGPointMake（296488）、controlPoint2:CGPointMake（338440））
addCurveToPoint（CGPointMake（304290）、controlPoint1:CGPointMake（327365）、controlPoint2:CGPointMake（304331））
addCurveToPoint（CGPointMake（349206）、controlPoint1:CGPointMake（304255）、controlPoint2:CGPointMake（322224））
addCurveToPoint（CGPointMake（265164）、controlPoint1:CGPointMake（327178）、controlPoint2:CGPointMake（295164））
addCurveToPoint（CGPointMake（196182），controlPoint1:CGPointMake（219164），controlPoint2:CGPointMake（218182））
addCurveToPoint（CGPointMake（126164），controlPoint1:CGPointMake（173182），controlPoint2:CGPointMake（172164））
addCurveToPoint（CGPointMake（12298），controlPoint1:CGPointMake（73164），controlPoint2:CGPointMake（12210））
addCurveToPoint（CGPointMake（126488）、controlPoint1:CGPointMake（12387）、controlPoint2:CGPointMake（81488））
返回路径
}
重写func lineFragmentRectForProposedRect（proposedRect:CGRect，atIndex characterIndex:Int，writingDirection baseWritingDirection:NSWritingDirection，remainingRect:UnsafeMutablePointer）->CGRect
{
var结果=super.lineFragmentRectForProposedRect（proposedRect，atIndex:characterIndex，writingDirection:baseWritingDirection，remainingRect:remainingRect）
设r=CGRectMake（0,0，self.size.width，self.size.height）
让circle=drawPath（）//UIBezierPath（ovalInRect:r）
println（“这是自行创建的不规则形状：\（路径）”）
println（“这是默认的工作椭圆ll:\（UIBezierPath（ovalInRect:r））”）
while！circle.containsPoint（result.origin）{
result.origin.x+=0.1
println（result.origin.x）
}
while！circle.containsPoint（CGPointMake（result.maxX，result.origin.y））{
结果.size.width-=0.1
}
返回结果
}
如果我正确理解了您的形状，您将尝试水平扫描以检测重叠，但您使用的路径在平面y=0上不存在。您需要更改
r.origin
的
y
值或使用到达y=0的路径。
请显示用于绘制路径的代码您的代码中存在错误。除非你把代码给我们看，否则我们怎么能帮助你呢？对不起，更新了@Alexanderwhile循环将永远持续下去。我看不到while循环。你看@lordzsolt谢谢你的及时回复！如果我想改变r原点，它应该等于什么？我想你是对的。当我打印的时候。默认的椭圆bezierpath确实在y=0处结束，但如何解决该问题=\n水平扫描，直到到达矩形的边界，然后增加y位置并再次开始水平扫描。重复，直到你被击中。你可以发布一个示例代码=P，因为我的大脑现在有点僵住了，不知道该怎么办。谢谢！嗨@Reeve，我想你已经有足够的信息来编写代码了，现在你知道了解决方案。
while (![circle containsPoint:p])

func drawPath() -> UIBezierPath 
{
    var path = UIBezierPath()
    path.moveToPoint(CGPointMake(126,488))
    path.addCurveToPoint(CGPointMake(196,471), controlPoint1: CGPointMake(156,488), controlPoint2: CGPointMake(175,471))
    path.addCurveToPoint(CGPointMake(266,488), controlPoint1: CGPointMake(216,471), controlPoint2: CGPointMake(235,488))
    path.addCurveToPoint(CGPointMake(362,382), controlPoint1: CGPointMake(296,488), controlPoint2: CGPointMake(338,440))
    path.addCurveToPoint(CGPointMake(304,290), controlPoint1: CGPointMake(327,365), controlPoint2: CGPointMake(304,331))
    path.addCurveToPoint(CGPointMake(349,206), controlPoint1: CGPointMake(304,255), controlPoint2: CGPointMake(322,224))
    path.addCurveToPoint(CGPointMake(265,164), controlPoint1: CGPointMake(327,178), controlPoint2: CGPointMake(295,164))
    path.addCurveToPoint(CGPointMake(196,182), controlPoint1: CGPointMake(219,164), controlPoint2: CGPointMake(218,182))
    path.addCurveToPoint(CGPointMake(126,164), controlPoint1: CGPointMake(173,182), controlPoint2: CGPointMake(172,164))
    path.addCurveToPoint(CGPointMake(12,298), controlPoint1: CGPointMake(73,164), controlPoint2: CGPointMake(12,210))
    path.addCurveToPoint(CGPointMake(126,488), controlPoint1: CGPointMake(12,387), controlPoint2: CGPointMake(81,488))

    return path
}

override func lineFragmentRectForProposedRect(proposedRect: CGRect, atIndex characterIndex: Int, writingDirection baseWritingDirection: NSWritingDirection, remainingRect: UnsafeMutablePointer<CGRect>) -> CGRect 
{
    var result = super.lineFragmentRectForProposedRect(proposedRect, atIndex:characterIndex, writingDirection:baseWritingDirection, remainingRect:remainingRect)
    let r = CGRectMake(0,0,self.size.width,self.size.height)
    let circle = drawPath() //UIBezierPath(ovalInRect: r)
    println("this is self created irregular shape: \(path)")
    println("this is the default working OVALLLL: \(UIBezierPath(ovalInRect: r))")

    while !circle.containsPoint(result.origin) {
        result.origin.x += 0.1
        println(result.origin.x)
    }
     while !circle.containsPoint(CGPointMake(result.maxX, result.origin.y)) {
        result.size.width -= 0.1
    }
    return result
}