UIBezierPath

Question

以下代码创建如下效果：

  let path = UIBezierPath()
    path.moveToPoint(CGPoint(x: 0, y: 0))
    path.addLineToPoint(CGPoint(x: headerRect.width, y: 0))
    path.addLineToPoint(CGPoint(x: headerRect.width, y: headerRect.height))
    path.addLineToPoint(CGPoint(x: 0, y: headerRect.height-headerCutAway))
    headerMaskLayer?.path = path.CGPath

我想改变它，让三角形在右边而不是左边，我该怎么做？

Answer 1

只需交换最后两个坐标的 y 值：

path.moveToPoint(CGPoint(x: 0, y: 0))
path.addLineToPoint(CGPoint(x: headerRect.width, y: 0))
path.addLineToPoint(CGPoint(x: headerRect.width, y: headerRect.height-headerCutAway))
path.addLineToPoint(CGPoint(x: 0, y: headerRect.height))
headerMaskLayer?.path = path.CGPath

UIBezierPath - Swift 2

UIBezierPath - Swift 2

swift

swift2