Swift 在UIView顶部创建曲线
我需要在UIView的顶部和底部创建一条曲线,我对底部使用了以下方法:Swift 在UIView顶部创建曲线,swift,uiview,uibezierpath,Swift,Uiview,Uibezierpath,我需要在UIView的顶部和底部创建一条曲线,我对底部使用了以下方法: func pathCurvedForView(givenView: UIView, curvedPercent:CGFloat) ->UIBezierPath { let arrowPath = UIBezierPath() arrowPath.move(to: CGPoint(x:0, y:0)) arrowPath.addLi
func pathCurvedForView(givenView: UIView, curvedPercent:CGFloat) ->UIBezierPath
{
let arrowPath = UIBezierPath()
arrowPath.move(to: CGPoint(x:0, y:0))
arrowPath.addLine(to: CGPoint(x:givenView.bounds.size.width, y:0))
arrowPath.addLine(to: CGPoint(x:givenView.bounds.size.width, y:givenView.bounds.size.height))
arrowPath.addQuadCurve(to: CGPoint(x:0, y:givenView.bounds.size.height), controlPoint: CGPoint(x:givenView.bounds.size.width/2, y:givenView.bounds.size.height-givenView.bounds.size.height*curvedPercent))
arrowPath.addLine(to: CGPoint(x:0, y:0))
arrowPath.close()
return arrowPath
}
func applyCurvedPath(givenView: UIView,curvedPercent:CGFloat) {
guard curvedPercent <= 1 && curvedPercent >= 0 else{
return
}
let shapeLayer = CAShapeLayer(layer: givenView.layer)
shapeLayer.path = self.pathCurvedForView(givenView: givenView,curvedPercent: curvedPercent).cgPath
shapeLayer.frame = givenView.bounds
shapeLayer.masksToBounds = true
givenView.layer.mask = shapeLayer
}
func-pathCurvedForView(给定视图:UIView,curvedPercent:CGFloat)->UIBezierPath
{
设arrowPath=UIBezierPath()
箭头路径。移动(到:CGPoint(x:0,y:0))
arrowPath.addLine(to:CGPoint(x:givenView.bounds.size.width,y:0))
arrowPath.addLine(to:CGPoint(x:givenView.bounds.size.width,y:givenView.bounds.size.height))
arrowPath.addQuadCurve(到:CGPoint(x:0,y:givenView.bounds.size.height),控制点:CGPoint(x:givenView.bounds.size.width/2,y:givenView.bounds.size.height givenView.bounds.size.height*curvedPercent))
arrowPath.addLine(到:CGPoint(x:0,y:0))
arrowPath.close()
返回箭头路径
}
func applyCurvedPath(给定视图:UIView,曲线百分比:CGFloat){
防护曲线百分比=0{
返回
}
let shapeLayer=CAShapeLayer(层:givenView.layer)
shapeLayer.path=self.pathCurvedForView(给定视图:给定视图,弯曲百分比:弯曲百分比)。cgPath
shapeLayer.frame=givenView.bounds
shapeLayer.masksToBounds=true
givenView.layer.mask=shapeLayer
}
它工作得很好,但只做了视图底部的工作,您知道如何在topView中实现它吗?
谢谢
让我们解释一下效果:
A B
+ -------- +
| |
| |
+ -------- +
D C
我们希望:
- 从(0,0)开始:
移动(到:)
- 曲线高达B(宽度,0):
addQuadCurve(到:控制点:)
- 直接到C(宽度、高度):
addLine(到:)
- 曲线到D(0,高度):
addQuadCurve(到:控制点:)
- 直接到A(0,0):
addLine(to:)
- 接近
arrowPath.addLine(to: CGPoint(x:givenView.bounds.size.width, y:0))
与
让我们解释一下效果:
A B
+ -------- +
| |
| |
+ -------- +
D C
我们希望:
- 从(0,0)开始:
移动(到:)
- 曲线高达B(宽度,0):
addQuadCurve(到:控制点:)
- 直接到C(宽度、高度):
addLine(到:)
- 曲线到D(0,高度):
addQuadCurve(到:控制点:)
- 直接到A(0,0):
addLine(to:)
- 接近
arrowPath.addLine(to: CGPoint(x:givenView.bounds.size.width, y:0))
与
将
arrowPath.addLine(to:CGPoint(x:givenView.bounds.size.width,y:0))替换为arrowPath.addQuadCurve(to:CGPoint(x:givenView.bounds.size.width,y:0),控制点:CGPoint(x:givenView.bounds.size.width/2,y:givenView.bounds.size.height*curvedPercent))
替换arrowPath.addLine(to:CGPoint(x:givenView.bounds.size.width,y:0))
witharrowPath.addQuadCurve(to:CGPoint(x:givenView.bounds.size.width,y:0),控制点:CGPoint(x:givenView.bounds.size.width/2,y:givenView.bounds.size.height*curvedPercent))